CN202204925U - On-site tester for electricity consumption information collection system - Google Patents

Abstract

The utility model discloses an electricity consumption information acquisition system field tester, which comprises a microprocessor, a display unit, a power module, a storage unit, a communication interface unit and an input unit, wherein the microprocessor is internally provided with a data processing program; the microprocessor is respectively connected with the display unit, the power supply module, the storage unit, the communication interface unit and the input unit; the input unit receives an external instruction and transmits the external instruction to the microprocessor, the microprocessor transmits the external instruction to the communication interface unit, the communication interface unit is communicated with the collector and the intelligent electric meter and transmits acquired data to the microprocessor, and the microprocessor processes the acquired data and stores and displays the data and a processing result. The utility model discloses a power consumption information acquisition system field test appearance has the trouble that can discover intelligence system of checking meter fast effectively, improves advantages such as operational reliability and the security of intelligence system of checking meter.

Description

On-site tester for electricity consumption information collection system

technical field

The utility model relates to a tester, in particular to a field tester for a power consumption information collection system in a power system.

Background technique

With the development of computer technology and communication technology, the traditional manual meter reading method is no longer used in the power supply system, replaced by an intelligent remote meter reading system. The meter reading system includes smart meters, collectors and concentrators. In the meter box of the residential building, a collector and multiple smart meters are installed. All the meters are connected to the collector through the RS485 bus, and the collector collects the data on all the meters. The staff only need to connect the data acquisition device to the collector, and then they can obtain the data of all the meters in the meter box on site. All the collectors in a certain area can be connected to the concentrator through a wired communication network or a wireless communication network, and can send data to the concentrator, and the concentrator collects all the meter data in the area for analysis and processing. The concentrator can send instructions to the collector through the communication network, and the collector completes the relevant data collection work and transmits the data to the concentrator to realize the function of remote meter reading. Each smart meter has a unique ID number, which is input into the collector and concentrator, and the collector and concentrator identify different meters according to the ID number. After the equipment is installed, the staff will record the ID number, and then go back to the unit to input the ID number into the smart meter reading system. The ID number is generally 10 digits, and the workload is heavy and cumbersome. Manual transcription and input are easy. error.

When installing meter boxes on site, a large number of smart meters and collectors need to be installed on the user site. In order to confirm the effective connection between the meter and the collector, a test is usually performed after installation on site. In a city, there are hundreds of thousands or even millions of smart meters, and the number of collectors is also as high as hundreds of thousands. Due to the large number of meters, the workload of debugging and testing is very large. The communication test between the on-site collector and the smart meter, the carrier communication between the concentrator and the collector, and the parameter setting of the concentrator are very important. Basic conditions. At present, during the construction process, there is no intelligent instrument that can debug and test equipment such as smart meters, collectors, and concentrators. At present, the installation, commissioning and verification of the meter collection terminal are independent links. When it is found that the concentrator cannot copy data, it is impossible to distinguish whether it is a carrier problem, a collection device problem or an installation problem. The staff can only detect each work link one by one, and test the ammeter, collector and concentrator separately. The work of fault diagnosis is very difficult. complex, and at the same time, the workload of rework is very large, and the work efficiency of problem solving is low. Therefore, there is an urgent need for a device that can test the collector of the meter box and the meter immediately after the installation is completed, so as to improve the test efficiency of the smart meter reading system. .

In addition, after the collection system is used, in order to ensure the accurate measurement of the ammeter, the staff needs to go to the site to check the reading of the ammeter on a regular basis. The existing method is that the staff first obtain the readings of a large number of electric meters from the concentrator, and then go to the scene to check one by one. Due to the large number of meters, there is a time difference between the time of obtaining the meter reading from the concentrator and the time of reading the meter on site, and there is also a difference between the two readings. If the two readings are not much different, the staff considers the meter to be normal. The meter is considered faulty only when the two readings differ significantly. In this way, if there is an error in the meter and the error is not large, the fault of the meter cannot be detected, which will affect the accuracy of the meter reading system.

Utility model content

The utility model is to avoid the shortcomings in the above-mentioned prior art, and provides a field tester for the electricity consumption information collection system, which can quickly and effectively test the smart meter and the collector and other instruments, and improve the checking of the meter. efficiency.

The utility model adopts the following technical solutions for solving technical problems.

The on-site tester for the electricity consumption information collection system is characterized in that it includes a microprocessor with a built-in data processing program, a display unit, a power supply module, a storage unit, and a communication interface for connecting the tester with the collector and the smart meter unit and an input unit for inputting instructions and data; the microprocessor is respectively connected with a display unit, a power supply module, a storage unit, a communication interface unit and an input unit; the input unit receives external instructions and transmits them to the microprocessor , the microprocessor transmits the external instruction to the communication interface unit, and the communication interface unit communicates with the collector and the smart meter and transmits the acquired data to the microprocessor, and the microprocessor processes the acquired data and combines the data and The processing results are stored in the storage unit, and the data and processing results are sent to the display unit for display.

The structural features of the field tester for the electricity consumption information collection system of the present utility model also lie in:

The display unit is an LCD display.

The input unit is a keyboard.

The communication interface unit includes an infrared transceiver, a serial communication interface and an RS485 communication interface.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

The tester of the utility model adopts an ARM processor as a microprocessor, which can effectively improve the use efficiency and prolong the service life, and is suitable for use in various harsh environments, so as to achieve high efficiency and ensure communication effects anytime and anywhere. Through the microprocessor and detection unit, communication interface unit, display unit, input unit and other units, the collector and smart meter can be tested, and the faults of the smart meter reading system can be found quickly and effectively, and the operation reliability of the smart meter reading system can be improved. sex and safety. The testing instrument of the utility model has the advantages of being able to quickly and effectively find faults in the intelligent meter reading system, improving the operating reliability and safety of the intelligent meter reading system, and the like.

Description of drawings

Fig. 1 is a structural block diagram of a field tester for an electricity consumption information collection system of the present invention.

Fig. 2 is a schematic diagram of the field tester of the electricity consumption information collection system of the present invention exchanging data with the meter reading system.

Numbers in accompanying drawing 1: 1 microprocessor, 2 storage unit, 3 communication interface unit, 31 infrared transceiver, 32 serial communication interface, 33 RS485 communication interface, 4 display unit, 5 input unit, 6 power supply module.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to Fig. 1, the field tester for the electricity consumption information collection system includes a microprocessor 1 with a built-in data processing program, a display unit 4, a power supply module 6, and a storage unit 2, which are used to connect the tester with the collector and the smart meter Communication interface unit 3 and input unit 5 for inputting instructions and data; Microprocessor 1 is connected with display unit 4, power module 6, storage unit 2, communication interface unit 3 and input unit 5 respectively; By input unit 5 Receive external instructions and transmit the external instructions to the microprocessor 1, and the microprocessor 1 transmits the external instructions to the communication interface unit 3, and the communication interface unit 3 communicates with the collector and the smart meter and transmits the acquired data to the microprocessor The microprocessor 1 processes the obtained data, stores the data and processing results in the storage unit 2, and sends the data and processing results to the display unit 4 for display. The tester of the utility model adopts ARM as a microprocessor, can effectively improve the use efficiency and prolong the service life, and is suitable for use in various harsh environments, realizing high efficiency and ensuring communication effects anytime and anywhere. Through the microprocessor, storage unit, communication interface unit, display unit, input unit and other units, the collector and smart meter can be tested on site, and the faults of the smart meter reading system can be found quickly and effectively, and the operation of the smart meter reading system can be improved. reliability and security.

The display unit 4 is an LCD display. The LCD display is used as the display unit, which has a long service life and good display effect.

The input unit 5 is a keyboard. The keyboard is used as the input unit, the input is convenient and fast, and the test efficiency can be improved.

The communication interface unit 3 includes an infrared transceiver 31 , a serial communication interface 32 and an RS485 communication interface 33 . There are a variety of communication interfaces, which can improve the versatility of the tester and facilitate the connection with external devices. In actual operation, data is generally exchanged with the infrared communication module on the collector or smart meter through the infrared transceiver. The data is exchanged through the infrared device, no need to connect the data line, the operation is simple and convenient, and the efficiency of the test is improved.

The test steps of the field tester of the electricity consumption information collection system of the present utility model are:

a. The tester communicates with the smart meter through the communication interface unit 3, reads the ID number of the smart meter and stores it in the storage unit 2;

b. The tester communicates with the collector through the communication interface unit 3, reads the ID number of the collector and stores it in the storage unit 2; then, the staff inputs the meter reading instruction through the input unit 5, and the microprocessor 1 reads the meter The command is passed to the collector;

c. The collector receives and analyzes the meter reading instruction sent by the tester through its interface unit, and then transmits the meter reading instruction to each smart meter that needs to be read; the meter reading instruction includes the ID number of the collector and the required The ID number of the smart meter to be read; each smart meter receives the meter reading command sent by the collector, and transmits the meter reading to the collector;

d. The collector receives the meter readings transmitted by each smart meter, collects the readings of each smart meter and sends them to the tester:

e. The tester receives the meter readings transmitted by the collector, stores them in the storage unit and displays them on the display unit 4; the staff reads the display readings of each smart meter on site to judge whether the meter is effectively connected to the collector, and completes the meter box test. Under normal circumstances, the tester uses infrared communication to communicate with the collector and the meter. The test work intensity is low and the operation is simple. The staff can quickly know whether the meter is accurate by comparing the readings displayed by the tester with the readings displayed by the meter. Connecting to the collector improves the test efficiency of the meter reading system.

During the test, when it is necessary to obtain the reading of a specific meter, in order to prevent misreading the data of other meters in the meter box, first input the last two digits of the ID number of the specific meter, and then the tester reads the data The ID number and reading of the specific meter; then, the tester compares the last two digits of the ID number of the specific meter obtained with the two digits entered; if the last two digits of the ID number of the specific meter read and the input If the two digits of the meter are consistent, the reading is accepted; otherwise, the tester will give a prompt that the ammeter read is wrong. By comparing the input number with the ID number of the read specific meter, it is possible to avoid reading the wrong meter, and when the meter is read incorrectly, the staff can be informed in time, and the accuracy and efficiency of the test can be improved.

After the smart meter and the collector are installed in the meter box, use a tester to test the connection between the collector and the smart meter to confirm that the collector and each smart meter can communicate normally. As shown in Figure 2, the collector communicates with the meter through the RS485 cable, using the DLT645 communication protocol. The collector and the concentrator communicate through low-voltage carrier communication, or through wired communication such as twisted pair, coaxial cable or optical cable, and the communication protocol of the collector is set between the two. Usually adopt the mode communication of infrared communication between collector, concentrator and ammeter and the field tester of the present utility model, also can communicate with tester by serial communication interface 32 or RS485 communication interface 33 of tester, concentrator and The master station and the terminal communication protocol are used to communicate between the testers, the collector and the tester are communicated using the collector communication protocol, and the ammeter and the tester are communicated using the ammeter communication protocol. The specific process of the test is as follows:

1) The tester communicates with the infrared communication module of the smart meter through the infrared transceiver, reads the ID number of the smart meter and stores it in the storage unit;

II) The tester communicates with the infrared communication module of the collector through the infrared transceiver, and the tester reads the ID number of the collector and stores it in the storage unit; then, the tester passes the meter reading instruction to the collector;

III) The collector receives the meter reading instruction through the infrared communication module, and analyzes the meter reading instruction, and then transmits the meter reading instruction to each smart meter that needs to be read; the smart meter and the collector communicate through the RS485 bus, and the smart The meter receives the meter reading command sent by the collector, and transmits the meter reading to the collector;

Ⅳ) The collector receives the meter readings transmitted by each smart meter, collects the readings of each smart meter and sends them to the tester;

V) The tester receives the meter readings transmitted by the collector, stores them in the storage unit and displays them on the display unit, and the staff judges whether the meter is effectively connected to the collector according to the readings of each smart meter, and completes the test of the meter box.

When it is necessary to check the ammeter regularly, the tester first communicates with the collector to read and store the data of all the ammeters in the meter box. Then, observe the readings displayed by each ammeter one by one, compare the data read from the collector with the data displayed by the ammeter, and if the two data are consistent, the ammeter is considered normal. If the data is inconsistent, the tester will directly read the data of the ammeter, and compare the directly read data with the data displayed by the ammeter to determine whether the ammeter is normal. When reading a meter directly through the tester, since there are multiple meters in the meter box, in order to prevent misreading the data of other meters, first input the last two digits of the ID number of the meter, and then read the meter again. For the ID number and reading of the meter, if the last two digits of the ID number read are consistent with the two digits entered, the reading is accepted; otherwise, the tester will give a prompt that the meter read is wrong.

The tester of the utility model adopts a high-efficiency ARM processor as a microprocessor, which has the advantages of ultra-high-speed data processing, FLASH capacity can be determined on demand, breaks through the erasing and writing life limit, and ensures data completion and continuity.

The tester of the utility model can efficiently test the connection state of the collector and the smart meter on the spot, the test is convenient and fast, and the fault of the smart meter reading system can be found in time; The readings of the ammeter can be checked, and the problem that the small error of the ammeter cannot be known during the check due to the time difference between the two readings is avoided.

The tester of the utility model uses the ARM processor as the high-efficiency core, and analyzes and processes the obtained test data through the built-in data analysis and processing program of the ARM, so as to provide staff with the ability to analyze the fault location and fault cause of the intelligent meter reading system It provides an effective data source, can intuitively reflect the collection equipment, installation process and check the accuracy of the meter, in order to simplify the work process, improve work efficiency, reduce the labor cost of power grid operation and ensure the normal power supply of power customers.

Claims (4)

1. The on-the-spot tester for the electricity consumption information collection system is characterized in that it includes a microprocessor (1) with a built-in data processing program, a display unit (4), a power supply module (6), a storage unit (2), and is used to The communication interface unit (3) connecting the tester with the collector and the smart meter and the input unit (5) for inputting instructions and data; the microprocessor (1) is connected with the display unit (4) and the power supply module (6) respectively , storage unit (2), communication interface unit (3) and input unit (5) are connected; Receive external instruction and send external instruction to microprocessor (1) by input unit (5), microprocessor (1) The external command is transmitted to the communication interface unit (3), and the communication interface unit (3) communicates with the collector and the smart meter and transmits the obtained data to the microprocessor (1), and the microprocessor processes the obtained data , and store the data and processing results in the storage unit (2), and at the same time send the data and processing results to the display unit (4) for display. 2. The field tester for electricity consumption information collection system according to claim 1, characterized in that, the display unit (4) is an LCD display. 3. The field tester for electricity consumption information collection system according to claim 1, characterized in that, the input unit (5) is a keyboard. 4. the field tester for electricity consumption information collection system according to claim 1, is characterized in that, described communication interface unit (3) comprises infrared transceiver (31), serial communication interface (32) and RS485 communication interface ( 33).

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