• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Battery powered stationary sensor system with unidirectional data transmission Applications of the present invention provide a battery powered stationary sensor system with unidirectional data transmission. The battery-powered stationary sensor system is composed of a sensor, means for generating packets of data and means for transmitting packets of data. the transmitter is implemented to determine the sensor data and provide a sensor data packet based on the sensor data, characterized in that the sensor data is composed of an amount of data smaller than 1 kbit. the data packet generating means is implemented to divide the sensor data packet into at least two data packets, wherein each of the at least two data packets is smaller than the sensor data packet . the packet data transmission means is implemented to transmit the data packets with a data rate less than 50 kbit/s and a time slot over the communication channel.
    公开号:BR112014004987B1
    申请号:R112014004987-4
    申请日:2012-08-31
    公开日:2022-01-04
    发明作者:Josef Bernhard；Kilian Gerd
    申请人:Fraunhofer-Gellschaft Zur Förderung Der Angewandten Forschung E.V.；
    IPC主号:
    专利说明:

    DESCRIPTION
    Applications of the present invention relate to a battery-powered stationary sensor system with unidirectional data transmission. Other applications of the present invention relate to a hybrid method for wireless transmission of burst data packets in a stationary multi-user system.
    In transmitting small amounts of data, for example sensor data from a heat, current or water meter, a radio transmission system can be used. Here, a transmission medium with a data transmitter is coupled to the sensor which will wirelessly transmit data from the sensor to a data receiver.
    U.S. Patent 7,057,525 B2 describes a system for reading a unidirectional remote meter or meter with two means, one generating small transmission packets for mobile reception and the other generating narrowband transmission packets receiveable at greater distances from of a stationary receiver. Here, the two signals sent are different only as far as signal bandwidth is concerned.
    It is an object of the present invention to provide a concept that allows for an increase in range.
    This objective is achieved through a battery-powered stationary sensor system with unidirectional data transmission according to claim 1, a system with a battery-powered stationary sensor system and a data receiver according to claim 8, a method for transmitting a data packet from the sensor according to claim 13, and a computer program according to claim 14.
    The present invention provides a battery-powered stationary sensor system with unidirectional data transmission. The battery-powered stationary sensor system is composed of a sensor, a data packet generation means and a data packet transmission means. The sensor is implemented for determining the sensor data and providing a sensor data packet based on the sensor data, characterized in that the sensor data is composed of an amount of data smaller than 1 kbit; The data packet generation means is implemented to divide the sensor data packet into at least two data packets, characterized in that each of the at least two data packets is smaller than the sensor data packet. . The data packet transmission means are implemented for transmitting the data packets over a communication channel with a data rate less than 50 kbit/s and a time slot.
    In applications, the sensor data packet is divided into at least two data packets, characterized in that the sensor data packets are transmitted over the communication channel with a data rate less than 50 kbit/s and an interval of time. When compared to a conventional battery-powered stationary sensor system, characterized by communicating with a data rate of, for example, 100 kbit/s, the signal-to-noise ratio (SNR | signal to noise ratio) at the data receiver will be increased and, thus, the range is also increased. Furthermore, by splitting the sensor data packet into at least two data packets and by transmitting at least two data packets over the time slot communication channel, on the one hand the battery charge, and on the other hand, the probability of transmission errors are reduced.
    In the following, applications of the present invention are explained in more detail with reference to the accompanying drawings, in which:
    Figure 1 is a block diagram of a battery-powered stationary sensor system with unidirectional data transmission in accordance with an application of the present invention.
    Figure 2 is a block diagram of a system with a battery-powered stationary sensor system and a data receiver in accordance with an application of the present invention;
    Figure 3 is a block diagram of a data receiver according to an application of the present invention;
    Figure 4 is a schematic illustration of a distribution of data packets for different transmission frequencies in accordance with an application of the present invention;
    Figure 5 is a time capacity utilization of a communication channel with the Aloha method;
    Figure 6 in a diagram, different possibilities for increasing Eb/N0 in a transmission of a telegram according to an application of the present invention;
    Fig. 7 is a diagram of a probability of receiving a telegram as a function of normalized telegram distance;
    Figure 8 is a time capacity utilization of a communication channel in a transmission of n data packets according to an application of the present invention;
    Figure 9 is a diagram of a telegram error probability depending on the number of data packets for fN =20, DΣx =0.2 and P(XFw)=2.3•10-10;
    Figure 10 is a diagram of the telegram error probability depending on the number of data packets for fN=20, DΣx=0.5 and P(XFw)=1.0 10-4 ; and
    Figure 11 is a diagram of the telegram error probability depending on the number of data packets for fN =20, DΣx=0.8 and P(XFw)=1.1 10-2.
    In the description of the applications of the invention below, in the values, similar or apparently similar elements are provided with the same reference numerals, so that a description of the same in different applications is mutually interchangeable.
    Figure 1 shows a block diagram of a battery-powered stationary sensor system 100 with unidirectional data transmission. The battery-powered stationary sensor system 100 contains a sensor 102, a data packet generation means 104 and a data packet transmission means 106. Sensor 102 is implemented for determination based on sensor data, characterized in that sensor data is composed of an amount of data less than 1 kbit. The data packet generation means 104 is implemented to divide the sensor data packet into at least two data packets, characterized in that each of the at least two data packets is smaller than the data packet of the sensor. sensor. The packet data transmission means 106 is implemented for transmitting the data packets at a data rate less than 50 kbit/s and a time slot over the communication channel.
    In applications, for range increase, sensor data is transmitted over narrowband with data rate less than 50kbit/s, e.g. 40kbit/s, 30kbit/s, 20kbit/s or 10kbit/s s instead of, for example, a data rate of 100 kbit/s. In a system 110 with a battery-powered stationary sensor system 100 (data transmitter) with a unidirectional data transmission (i.e., no reverse channel) and a data receiver 120, as illustrated in Figure 2, the signal-to-noise ratio at the data receiver 120 increases and thus the range also increases. As a consequence, however, the bit duration increases and thus the transmitted energy per bit increases in the inventive system 110 at low data rate. Since the battery in system 110 may not be charged for an extended period of time, but may only provide more power for a short period of time, the longer bit duration poses a problem. In order to ensure long battery life, only small shipments should be sent. For this reason smaller data (partial packets) are used so that only short pulses of battery charge are used. Furthermore, data packets can be encoded per channel, for example, so that not all data packets, but only a small fraction of them, are required for decoding the information.
    The sensor 102 of the battery-powered stationary sensor system 100 may be a sensor or counter, such as a temperature, heat, current or water sensor, counter or meter, characterized in that the sensor data may be sensor values or meter readings. The inventive system 110 with battery-powered stationary sensor system 100 (data transmitter) and data receiver 120 are not reverse channel composites. Data transmitter 100 may send sensor data at a pseudo-random time, where data receiver 120 may receive sensor data from several (different) data transmitters 100.
    Figure 3 is a block diagram of a data receiver 120 in accordance with an application of the present invention. The data receiver 120 is composed of a means 122 for receiving the data packet and a means 124 for reading the data packet from the sensor. Means 122 for receiving data packets is implemented for receiving at least two data packets and for combining the minimum two packets and determining the sensor data packet. Means 124 for reading the sensor data packet is implemented to determine sensor data from the sensor data packet and to allocate the sensor data to the battery-powered stationary sensor system.
    For data packet synchronization at the data receiver 120, the data packet generation means 104 of the battery-powered stationary sensor system 100 may be implemented to divide a synchronization sequence into partial synchronization sequences in order to provide each packet of data one of the partial sync sequences.
    Means 122 for receiving data packets from data receiver 120 may be implemented here to locate data packets in a received data stream based on partial synchronization sequences in order to receive data packets.
    For synchronizing the data packets at the data receiver 120, so the synchronizing sequences can be used. Sync sequences are determinant or pseudo-random binary data sequences, such as PRBS (pseudo random bitstream) sequences, which are transmitted together with the actual payload of data or sensor data in the data packets to the receiver. 120. The data receiver 120 knows the sync sequences. By correlating the receiving data stream with the known synchronization sequence, the data receiver 120 can determine the temporal position of the known synchronization sequence in the receiving data stream. Here, the correlation function is composed of a correlation peak at the location of the sync sequence in the downstream stream, characterized by the higher or higher the peak, the better the match of the downstream stream to the known sync sequence. . To better keep the burst data packets smaller, for a synchronization also the synchronization sequence can be distributed over the smaller individual data packets, so that the individual data packet shows worse synchronization characteristics than the synchronization by multiple data packets. In order to utilize this synchronization effect, the points in time of consecutive data packets may be known by the data receiver 120. On the other hand, the data packet receiving means of the data receiver 120 may be implemented for determining the time interval or temporal distance of data packets based on the partial sync sequences in order to locate the partial sync sequence in the downstream stream. Since the data transmitter 100 and the data receiver 120 are stationary and thus remain unchanged for a long period of time, the data receiver 120 can be implemented to determine the time sequence of data packets by learning methods.
    The means 104 for generating the data packet of the battery-powered stationary sensor system 100 may be implemented to further divide the sensor data packet into at least three data packets, characterized by each of at least three packets of data. sensor data is less than the sensor data packet. Furthermore, the data packet transmission means 106 of the battery-powered stationary sensor system 100 may be implemented to transmit at least two data packets with a first transmission frequency over the communication channel and to transmit at least , three data packets with a second transmission frequency over the communication channel.
    Means 122 for receiving data packets from data receiver 120 may be implemented to receive at least two data packets on a first transmission frequency and/or to receive at least three data packets on a second transmission frequency and to combine at least two data packets and/or at least three data packets in order to determine the sensor data packet.
    The means 104 for generating data packets of the battery-powered stationary sensor system 100 may further be implemented to encode at least two data packets with a first code rate (information rate) and to encode at least three data packets with a second code rate (information rate), characterized in that the first code rate is greater than the second code rate.
    In order to be additionally robust against interference or existing or other systems, data packets can be distributed to different transmit or broadcast frequencies (channels). For example, data packets can be distributed to channels n=2, n=3, n=4, n=5, n=10, or n=20.
    Figure 4 shows a schematic drawing of a distribution of data packets for different transmission frequencies in accordance with an application of the present invention. In Figure 4 the data packets are divided as an example into three transmission frequencies or frequency channels. The telegram to be transmitted (sensor data packet) comprises, for example, a data quantity of 75 bytes, characterized in that the data packets are, for example, transmitted at a data rate of 20 kbit/s via the communication channel. The length of each data packet here, for example, is 10 ms (=200 bits), from which a total telegram length of 220s results (update rate of approximately 4 minutes).
    In the application illustrated in Figure 4, the means 104 for generating data packets of the battery-powered stationary sensor system 100 is implemented to divide the sensor data packet into 12 data packets so as to also divide the sensor data packet. into 6 data packets and further split the sensor data packet into 4 data packets. In addition, the data packet transmission means 106 of the battery-powered stationary sensor system 100 is implemented to transmit the 4 data packets on a primary transmission frequency (channel 1), the 6 data packets on a transmission frequency. secondary (channel 2) and the 12 data packets on a tertiary transmission frequency (channel 3).
    Also, data on individual channels can be encoded differently in order to optimize for different application scenarios. Thus, channel 3, for example, can be encoded with a rate of 1/4 and data packets are transmitted more frequently on this channel than on channel 1 by less frequent transmission with a code rate greater than, for example, , 3/4. With interference on one or the other channel, it will still be possible to decode the other respective channel. If there is no interference, data packets from all channels would be decoded by MLE (maximum likelihood estimation). In a rural environment where the transmitter density is lower, using code rate and high packet transmission rate, a long range can be achieved. If the transmitter density decreases, there may be an increase in collision and interference on this channel. With high transmitter densities in urban environments, the lower baud rate on channel 1 would lead to fewer collisions, but also a shorter range due to the higher code rate. With high transmitter densities, however, there is no need for long range as there is a load-dependent range limitation due to multiple collisions. A load-dependent range limitation means that, due to the many collisions that occur, short-range data transmitters (better signal-to-noise ratio) are more strongly coded, and more remote and weaker data transmitters are overlapped. It may be advantageous in applications to transmit at a lower code rate at higher transmitter densities, although it may result in higher latency.
    In the following, the improvements and advantages of the present invention compared to the prior art are explained in more detail.
    Figure 5 shows a time capacity utilization of a communication channel with the Aloha method. Here, the abscissa describes the time and the ordinate describes the frequency. In the Aloha method, the data payload is transmitted in so-called telegrams, split into one or several data packets on a channel from a data transmitter. Also, on the same channel n = 0 other data transmitters Xi Xj and Xk, with ie {l,..,n}, j ϵ {l,...,n} and k ϵ {l,...,n} also transmit data packets. If the transmission of a data packet from a data transmitter X temporarily overlaps sending a data packet from a data transmitter A, then as illustrated in Figure 5 the transmission of the data packet from the data transmitter A is intercepted or disturbed. Sending data packets from C data transmitters would happen randomly.
    The data packet length of data transmitter A is assumed to be TA, with one of the data transmitters Xi considered to be TXri. The channel occupancy of an individual data transmitter Xi is defined by the so-called duty cycle of the respective data transmitter DXi =r/T ϵ [0,1] as a rate of transmission time r to operating time T. A data transmitter can here check whether the transmitter S is on (1) or off (0), that is, S ϵ {O,l}
    The probability of an undisturbed transmission can be approximately
    Here, DΣx = kDx and the total duty cycle of the interfering or disturbing data transmitter X.
    For receiving a transmission, at the data receiver 120 in principle an Eb/N0, depending on the modulation used and the channel coding, may be necessary. Eb here is the energy per bit, No is the noise performance density, in the noise performance at a normalized bandwidth. The signal-to-noise ratio is defined as follows:

    With signal energy S and noise performance N. The noise performance (noise strength) here is related to a specific bandwidth, N = BN0 is applied to bandwidth B. The signal performance is calculated as S = EBD. Thus, the following situation applies:
    or
    at data rate D. With increasing distance from data receiver 120 to data transmitter A, generally the energy received per bit Eb decreases. In order to increase the range of a transmission, different possibilities are available at first.
    For example, transmission performance can be increased, whereby also the energy per bit Eb is increased, which may not often be applied from a regulatory point of view. In addition, modulation or channel coding with a low Eb/N0 can be used, characterized by the limitation of the Shannon limit. Alternatively, the transmission duration of the telegram (sensor data packet) can be increased, whereby the data rate is reduced and the energy per bit Eb is increased, which is the starting point described below.
    In a diagram, Figure 6 presents different possibilities for increasing Eb/N0 in a transmission of a telegram (sensor data packet) according to an application of the present invention. Here, the abscissa describes the time and the ordinate describes the frequency. A decrease in the data rate of data transmitter A, as illustrated in Figure 6, can be caused by a lower symbol rate (transmitter B) or the use of a lower code rate (transmitter C) or a combination of both (transmitter D). Hence, the time required for transmission is longer, and the data transmitter 100 can output more power with the same transmission performance and a longer transmission time.
    For example, packet data transmission means can be implemented to provide data packets with a symbol rate of less than 1'106 symbols/sec or also less than 5-105 symbols/sec, 3*105 symbols/sec. s, 2-105 symbols/s or 1-105 symbols/s and/or a code rate of less than 0.8 or also less than 0.5, 0.3, 0.25 or 0.1.
    If a lower code rate is used, generally for a transmission a lower Eb/N0 is required. However, the required bandwidth increases when compared to using slower modulation. In all analyzed cases, the transmission is extended. In case of reduction of the symbol rate with
    this results in reduced transmission probability.
    Figure 7 presents a diagram of the probability of receiving a telegram (sensor data packet) as a normalized telegram extension function. Here, the abscissa describes the normalized length of telegram fN with fN = TA / Tx and the ordinate describes the probability P(A) of receiving the telegram.
    A first curve 150 describes the probability P(A) of receiving the telegram (sensor data packet), for D∑x=0.05; a second curve 152 describes the probability P(A) of receiving the telegram for D∑ x.= 0.10; a third curve 154 describes the probability P(A) of receiving the telegram for D∑ x.=0.15; a fourth curve 156 describes the probability P(A) of receiving the telegram for D∑ x =0.20; and a fifth curve 158 describes the probability P(A) of receiving the telegram for D∑x =0.30.
    It can be seen in Figure 7 that the probability P (A) of receiving the telegram (sensor data packet) decreases with increasing telegram length. Also, the probability P(A) of receiving the telegram decreases with increasing total duty cycle £>∑x . For range increase, however, an extension of the telegram transmission duration (sensor data packet) or a data rate reduction is necessary.
    In applications, the sensor data packet is divided into at least two data packets, characterized by the sensor data packets being transmitted with a data rate less than 50 kbit/s and a time interval or time distance. through the communication channel. By splitting the sensor data packet into at least two data packets and by transmitting at least two data packets over the time slot communication channel, on the one hand the battery charge, and on the other hand, probability of transmission errors are reduced, as explained below.
    The telegram (sensor data packet), as illustrated for example in Figure 8, can be transmitted with the help of several n data packets (of equal size). If an ideal code is adopted, at data receiver 120, when using Code Rate c, at least data packets [cn] must be received error-free so that the telegram (sensor data packet) can be reconstructed. no mistakes. Here, using the packet error probability P(PF) the error probability in the telegram P(TF) with pP(PF) is calculated as

    For the following considerations, it is assumed that the transmitted data packets were transmitted at random times. It is further assumed that an X system is already in operation. Transmissions must be random, the amount of data is assumed to be constant for all X-system data transmitters, Tx is the transmission duration of each X-system data transmitter. DΣx is the total duty cycle of all transmitters X system data.
    Now another data transmitter A must be operated, characterized by data transmitter A referring to the battery-powered stationary sensor system 100. Data transmitter A is disturbed by transmissions from the existing system X. Data transmitter A must transmit the same amount of data as the X system and use the same modulation.
    The range of data transmitter A in relation to the existing system X must be increased by increasing Eb by the factor fN. Thus, the duration of telegram transmission is extended by the factor fN. A telegram is transmitted while splitting into individual n data packets. TT is the transmission duration of a data packet. Thus, the following results for the packet error rate

    Accordingly, the packet error probability increases with increasing fN and decreases with increasing n, and is independent of the code rate c.
    A data transmitter of system X can transmit telegrams fN during the transmission time that data transmitter A requires for a telegram. Therefore, the probability that a telegram from transmitter X is transmitted at the same time as data transmitter A transmits a telegram increases.
    The probability that the data transmitter X with transmitted telegrams fN, each of which has an error probability P(XFw), does not receive any of them, as with the repeat code, is calculated as P(XFw) = P(XF )fN .
    The data transmitter bandwidth A normalized for the X system data transmitters is calculated as

    Figure 9 presents a telegram error probability diagram depending on the number of data packets for fN=2Q, D∑x=0.2 and P(XFw)=2.3 10-10 . A first curve 160 describes the telegram error probability for c = 1 and bN = 0.05; a second curve 162 describes the telegram error probability for c = 0.5 and bN = 0.1; a third curve 164 describes the telegram error probability for c = 0.33 and bN = 0.15; a fourth curve 166 describes the telegram error probability for c = 0.25 and bN = 0.20; a fifth curve 168 describes the telegram error probability for c = 0.13 and bN = 0.4; and a sixth curve 170 describes the packet error rate P(PF).
    Figure 10 presents a diagram of telegram error probability depending on the number of data packets for fN =20 , D∑x=0.5 and P(XFw)=1.0 10~4 . A first curve 172 describes the telegram error probability for c = 1 and bN = 0.05; a second curve 174 describes the telegram error probability for c = 0.5 and bN = 0.1; a third curve 176 describes the telegram error probability for c = 0.33 and bN = 0.15; a fourth curve 178 describes the telegram error probability for c = 0.25 and bN = 0.20; a fifth curve 180 describes the telegram error probability for c = 0.13 and bN = 0.4; and a sixth curve 182 describes the packet error rate P(PF).
    Figure 11 presents a telegram error probability diagram depending on the number of data packets for fN =20, D∑x=0.8 and P(XFw)=1.140-2 . A first curve 184 describes the telegram error probability for c = 1 and bN = 0.05; a second curve 186 describes the telegram error probability for c = 0.5 and bN = 0.1; a third curve 188 describes the telegram error probability for c = 0.33 and bN = 0.15; a fourth curve 190 describes the telegram error probability for c = 0.25 and bN = 0.20; a fifth curve 192 describes the telegram error probability for c = 0.13 and bN = 0.4; and a sixth curve 194 describes the packet error rate P(PF).
    It can be seen from Figures 9 to 11 that dividing the telegram (sensor data packet) into at least two data packets protected by an forward error correction code increases the transmission probability. This can also be considered under the aspect of "time diversity". This is the basis of the inventive concept to provide the telegram or sensor data packet with early error correction and split it into at least two data packets and transmit the same at pseudo-random times. Here, the transmissions of the battery-powered stationary sensor system 100 are extended (decreased data rate) in order to increase the range. Using the method described here, the common decrease in transmission security is neutralized.
    In applications, the range is thus increased by narrower bandwidth transmission and additional channel coding. Also, to improve transmission security (interference by other systems) and to decrease battery power consumption, the narrowband sensor data packets are split into several smaller data packets. Data packets can additionally be transmitted in different frequency bands (frequency hopping). Also, for better synchronization, short synchronization sequences are used.
    Other applications of the present invention provide a method for transmitting a sensor data packet in a battery-powered stationary sensor system with unidirectional data transmission. In the first step, sensor data is determined with a sensor and a sensor data packet is provided based on the sensor data, characterized in that the sensor data is composed of an amount of data smaller than 1 kbit. In the second step, the data packets are generated, characterized in that in the generation of the data packets, the sensor data packet is divided into at least two data packets and where each of at least two data packets is data is larger than the sensor data packet. In the third step, at least two data packets are transmitted with a data rate less than 50 kbit/s and a time slot over a communication channel.
    Other applications of the present invention relate to a unidirectional and wireless transmission method, for fields of application with a stationary data transmitter 100 and a stationary data receiver 120, characterized in that the data receiver has a comparatively longer time to receive. of the data.
    Although some aspects have been described in connection with a system, it is obvious that these aspects also represent a description of the corresponding method, so that a block or member of a system can also be considered as a corresponding step of the method or as a resource of a method step. Similarly, aspects described in connection with or as a method step also represent a description of a corresponding detail or block or feature of a corresponding system. Some or all of the method steps may be performed by a hardware apparatus (or using a hardware apparatus) such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some applications, some or several of the method steps can be performed by such an apparatus.
    Depending on certain implementation requirements, applications of the invention may be implemented in hardware or software. The implementation can be performed using a digital storage medium such as a floppy disk, a DVD, a Blu-Ray disc, a CD, a ROM, a PROM, an EPROM, an EEPROM or FLASH memory, a hard disk or other optical or magnetic memory in which electronically readable control signals are stored that can cooperate or actually cooperate with a programmable computer system in such a way that the respective method is performed. Thus, the digital storage medium can be recognizable by the computer.
    Some applications according to the invention presented herein include a data storage location that includes electronically readable control signals that can cooperate with a programmable computer system such that one of the methods described in this document is performed.
    In general, the applications of the present invention can be implemented as computer software with a program code, characterized in that the program code is operable in order to execute one of the methods when the computer program product is executed in a computer.
    Program code can, for example, be stored on optically readable data carrier.
    Other applications include the computer program for performing one of the methods described in this document, characterized in that the computer program is stored on an optically readable data carrier. In other words, an application of the inventive method is thus a computer program that is composed of program code for executing one of the methods described in this document when the computer program is executed on a computer.
    Another application of the inventive method, thus, is a data storage system (or a digital storage medium or optically readable data carrier) in which the computer program is recorded to perform one of the methods described in this document.
    Another application of the inventive method is a data stream or a sequence of signals that, for example, represent the computer program for executing one of the methods described in this document. The data stream or the signal sequence can, for example, be configured to be transferred over a data connection, for example via the Internet.
    Another application includes a processing means, such as a computer or a programmable logic system configured or adapted to perform one of the methods described in this document.
    Another application includes a computer on which the program for performing one of the methods described in this document is installed.
    Another application according to the invention includes a system or a system that is implemented to transmit a computer program for performing at least one of the methods described in this document to a receiver. The transmission can be carried out, for example, electronically or optically. The receiver may, for example, be a computer, a mobile system, a memory system or the like. The system or system must, for example, be a file server for transmitting the computer program to the receiver.
    In some applications, a programmable logic system (such as an FPGA | field programmable gate array) may be used to perform some or all of the functionality of the method described in this document. In some applications, a field programmable gate array may cooperate with a microprocessor in order to perform one of the methods described in this document. In general, in some applications the methods are executed by any hardware system. The same can be a hardware system of universal use such as a processing unit (CPU) or hardware that is specific to the method, such as an ASIC.
    The aforementioned applications merely represent an illustration of the principles of the present invention. It is obvious that modifications and variations of the arrangements and details described in this document are apparent to those skilled in the art. Thus, it is intended that the invention be limited only by the scope of the following patent claims and not by the specific details presented by the description and explanation of applications herein.
    权利要求:
    Claims (15)
    [0001]
    1. A battery-powered stationary sensor system (100) with unidirectional data transmission, comprising: a sensor (102) for determining sensor data and for providing a sensor data packet based on sensor data, sensor data sensor comprising an amount of data less than 1 kbit; data packet generation means (104) implemented to divide the sensor data packet into at least two data packets, characterized in that each of the at least two data packets is smaller than the data packet of the sensor. sensor; and packet data transmission means (106) implemented for transmitting the data packets at a data rate of less than 50 kbit/s and a time slot over the communication channel. characterized in that the means for generating (104) of data packets is implemented to divide a synchronization sequence into partial synchronization sequences and to provide each data packet with one of the partial synchronization sequences for a synchronization of the data packet at a receiver of Dice.
    [0002]
    The battery-powered stationary sensor system (100) according to claim 1, characterized in that the means for transmitting (106) the data packets is implemented to select the time slot of the data packets such that the load of battery-powered stationary sensor system battery (100) is reduced.
    [0003]
    The battery-powered stationary sensor system (100) according to any one of the preceding claims, characterized in that the means for transmitting (106) the data packets is implemented to provide the data packets with a symbol rate of less than 106 symbols and /or a code rate less than 0.8.
    [0004]
    The battery-powered stationary sensor system (100) according to any one of the preceding claims, characterized in that the means for generating (104) the data packets is implemented to divide the sensor data packet further into at least three data packets, wherein each of at least three data packets is smaller than the sensor data packet; and wherein the means for transmitting (106) the data packets is implemented to transmit at least two data packets with a primary transmission frequency over the communication channel and to transmit at least three data packets with a secondary transmission frequency through of the communication channel.
    [0005]
    The battery-powered stationary sensor system (100) according to claim 4, characterized in that the means for generating (104) the data packets are implemented to encode at least two data packets with a primary encoding rate and to encode at least three data packets with a secondary code rate, where the primary code rate is greater than the secondary code rate.
    [0006]
    The battery-powered stationary sensor system (100) according to any one of the preceding claims, characterized in that the means for transmitting (106) the data packets is implemented to transmit the data packets at a data rate less than 10 kbits/s.
    [0007]
    A system (110) comprising a battery-powered stationary sensor system (100) according to any one of the preceding claims and a data receiver (120) for receiving the sensor data packet, characterized by the data receiver (120). ) comprising: means for receiving (122) data packets implemented to receive at least two data packets and to combine at least two packets and determine the sensor data packet; and means for reading (124) the implemented sensor data packet to determine sensor data from the sensor data packet and for allocating the sensor data to the battery-powered stationary sensor system (100).
    [0008]
    The system (110) according to claim 7, characterized in that at least two data packets each comprise a partial synchronization sequence for synchronizing the data packet at the data receiver; and wherein the means for receiving the data packets is implemented to locate the data packets in a receive data stream based on the partial synchronization sequences in order to receive the data packets.
    [0009]
    The system (110) according to claim 8, characterized in that the means for receiving the data packets is implemented to determine the time interval of the data packets based on the partial synchronization sequences in the receiving data stream.
    [0010]
    The system (110) according to any one of claims 7, 8 or 9, characterized in that the sensor data packet divided into at least two data packets is transmitted with a primary transmission frequency and further divided in at least three data packets being transmitted with a secondary transmission frequency over the communication channel; wherein the means for receiving the data packets is implemented to receive at least two data packets on a primary transmission frequency and/or to receive at least three data packets on a secondary transmission frequency and to combine , at least two data packets and/or minimum of three data packets in order to determine the sensor data packet.
    [0011]
    The system (110) according to claim 10, characterized in that at least two data packets encoded with a primary code rate and at least three data packets encoded with a secondary code rate are transmitted via the communication channel; wherein the means for receiving the data packets is implemented to decode at least two data packets and/or to decode at least three data packets.
    [0012]
    12. A method for transmitting a sensor data packet in a battery-powered stationary sensor system (100) with unidirectional data transmission, comprising: determining sensor data (102) and providing a sensor data packet based on in the sensor data, characterized in that the sensor data is composed of an amount of data smaller than 1 kbit; generating data packets, characterized in that the generating data packets is divided into at least two data packets, wherein each of the at least two data packets is smaller than the sensor data packet; and transmitting at least two data packets with a data rate less than 50 kbit/s and a time slot over a communication channel, characterized in that, when generating the data packets, a synchronization sequence is divided into partial sync sequences and each data packet is provided with one of the partial sync sequences of the data packet at a data receiver.
    [0013]
    13. Non-transient storage media having recorded instructions read by a computer, characterized by comprising instructions that when executed perform the method of claim 12.
    [0014]
    14. A battery-powered stationary sensor system (100) with unidirectional data transmission, comprising: a sensor (102) for determining sensor data and providing a sensor data packet based on the sensor data, the data being of the sensor composed of an amount of data smaller than 1 kbit; data packet generating means (104) implemented to divide the sensor data packet into at least three data packets, each of the at least three data packets being smaller than the sensor data packet ; and packet data transmission means (106) implemented for transmitting the data packets at a data rate of less than 50 kbit/s and a time slot over the communication channel; characterized in that the means for generating (104) the data packets is implemented to encode per channel at least three data packets so that only a part of the data packets is needed to decode the sensor data packet.
    [0015]
    15. A battery-powered stationary sensor system (100) with unidirectional data transmission, comprising: a sensor (102) for determining sensor data and providing a sensor data packet based on the sensor data, characterized by the data of the sensor being composed of an amount of data smaller than 1 kbit; data packet generating means (104) implemented to divide the sensor data packet into at least two data packets, each of at least two data packets being smaller than the sensor data packet; and packet data transmission means (106) implemented for transmitting the data packets at a data rate of less than 50 kbit/s and a time slot over the communication channel; characterized in that the means for generating (104) the data packets is implemented to further divide the sensor data packet into at least three data packets, each of at least three data packets being smaller than the data packet. sensor data; and means for transmitting (106) the data packets being implemented for transmitting at least two data packets with a primary transmission frequency over the communication channel and for transmitting at least three data packets with a frequency secondary transmission over the communication channel.
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    同族专利:
    公开号 | 公开日
    WO2013030303A2|2013-03-07|
    DE102011082098A1|2013-03-07|
    CN103874906B|2017-09-01|
    ES2559460T3|2016-02-12|
    EP2751526A2|2014-07-09|
    DE102011082098B4|2014-04-10|
    BR112014004987A2|2017-04-11|
    EP2751526B1|2015-11-18|
    PL2751526T3|2016-04-29|
    US9354081B2|2016-05-31|
    CN107396212B|2020-10-30|
    ES2636986T3|2017-10-10|
    CN107396212A|2017-11-24|
    WO2013030303A3|2013-06-27|
    ZA201402362B|2016-01-27|
    EP3002560A1|2016-04-06|
    EP3002560B1|2017-05-31|
    US20140176341A1|2014-06-26|
    US10039084B2|2018-07-31|
    US20160249328A1|2016-08-25|
    DK2751526T3|2016-02-15|
    PL3002560T3|2017-10-31|
    DK3002560T3|2017-08-28|
    CN103874906A|2014-06-18|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-23| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-10-13| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2022-01-04| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 31/08/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011082098.1A|DE102011082098B4|2011-09-02|2011-09-02|Battery operated stationary sensor arrangement with unidirectional data transmission|
    DE102011082098.1|2011-09-02|
    PCT/EP2012/066905|WO2013030303A2|2011-09-02|2012-08-30|Battery-operated fixed sensor assembly having unidirectional data transmission|
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