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Wireless automatic meter reading method and system
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An automatic meter reading, wireless technology
Inactive Publication Date: 2010-06-16
BEIJING UNION UNIVERSITY
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In the prior art, the GSM / GPRS network is used for transmission, and the GSM / GPRS network has a network coverage blind area, which is not suitable for small-scale network applications
In addition, the data transmission path in the GSM / GPRS network is long, which affects the quality of data transmission
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Embodiment 1
[0049] Embodiment one, see figure 1 , figure 2 .
[0050] The invention provides a wireless automatic meter reading system, comprising:
[0052] A data collector 2, configured to receive the data transmitted by the sensor 1 and transmit the received data;
[0053] The management center 3 includes a first control unit 31 for receiving and recording the data transmitted by the data collector 2 .
[0054] When the system is working, the sensor 1 in the system acquires the meter data, and selects a route to send the meter data to the data collector 2 . After the data collector 2 receives the meter data, it sends the meter data to the management center 3, and the management center 3 receives the data transmitted by the data collector 2 and records it, that is, completes the meter reading task.
[0055] In the wireless Mesh network topology, the sensors include...
Embodiment 2
[0060] Embodiment two, see image 3 .
[0061] In the wireless meter reading system described above, the sensor 1 includes:
[0066] During work, the data acquisition unit 101 obtains the detection data of the detection instrument, and the data processing unit 102 processes the obtained detection data, filters out unstable values, obtains stable values, reduces the influence of unstable factors on the detection results, and reduces small detection error.
[0067]The data processing unit 102 stores the obtained detection data, and transmits the detection data to the next unit when an instruction is received. ...
Embodiment 3
[0069] Embodiment three, see Figure 4 .
[0070] In the wireless meter reading system described above, the data collector 2 includes:
[0071] A receiving unit 21, configured to receive data transmitted by the sensor;
[0072] processor 22 for executing operations and instructions;
[0073] The transmitting unit 23 is configured to transmit data to the management center.
[0074] After the receiving unit 21 receives the data transmitted by the sensor 1, the processor 22 executes the protocol conversion, the development of the application program and the command sent by the management center, and then sends the data after the protocol conversion to the management center 3 through the transmission unit 23. Among them, the processor mostly adopts ARM processor to realize the protocol conversion between Zigbee and embedded TCP / IP, and convert wireless transmission into wired transmission.
[0075] Usually, the data collector 2 transmits data to the management center 3 in two ...
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Abstract
The invention relates to the field of data transmission, in particular to a wirelessautomatic meter readingsystem which comprises a sensor, a data collector and a management center, wherein the sensor is used for obtaining data of a meter and transmitting the obtained data through a wireless Mesh network; the data collector is used for receiving the data transmitted by the sensor and transmitting the received data; and the management center comprises a first control unit, and the first control unit is used for receiving the data transmitted by the data collector and recording the data. The invention further provides a wirelessautomatic meter reading method. The wireless Mesh network in a ZigBee wireless network is utilized for carrying out communication in a domestic specific free frequency band, thereby saving the cost of the network. The wireless automatic meter reading method does not need to lay lines in advance, thereby having small workload and realizing portability. Furthermore, a topological structure of the wireless Mesh network can be built independently, thereby being applicable to information collection of a variety of small-range geographic regions and having a wide range of applications. The data transmission path is short, thereby ensuring the data transmission quality.
Description
technical field [0001] The invention relates to the field of data transmission, in particular to a wireless meter reading system and method. Background technique [0002] The traditional way of manually carrying paper and pen meter reading has problems such as heavy workload, large errors, and potential safety hazards. The way can no longer meet the needs of people's life, automatic meter reading technology came into being. [0003] Automatic meter readingsystem can be divided into wired and wireless two ways. Most of the current meter reading methods are wired. This method lays lines in advance according to the needs of the system. The workload is heavy, the development cycle is long, and capacity expansion and line transformation are very difficult and expensive. Most of the wireless meter reading methods are automatic meter reading systems based on GSM (Global System for Mobile Communications) / GPRS (General Packet Radio Service), using existing GSM / GPRS network equipme...
Claims
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Application Information
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