CN106485899A - Family table wiring test device and its method of testing based on the power frequency distortion communication technology - Google Patents

Abstract

The present invention relates to a household meter wiring testing device based on power frequency distortion communication technology and a testing method thereof, comprising a household meter main control unit connected to several electric meters, a household meter detection module electrically connected with the household meter main control unit, and a household meter main control unit connected with the household meter. The PDA handheld terminal for wireless communication of the meter detection module and the power management terminal for mutual communication with the PDA handheld terminal; each meter is electrically connected to the main control unit of the household meter through a current clamp, and a barcode is correspondingly attached to each meter; power management The terminal includes a storage module and a communication interface module; the handheld PDA terminal includes an infrared scanning module for reading the barcode on the meter, a data communication module for communicating with the power management terminal, and a wireless communication module for wireless communication with the household meter detection module. The beneficial effect of the present invention is that: adopting power frequency distortion communication technology and micro-power wireless communication technology, it overcomes disadvantageous factors such as power line carrier communication attenuation and susceptibility to interference under high noise and heavy load conditions, and has high detection reliability.

Description

Household meter wiring test device and test method based on power frequency distortion communication technology

technical field

The invention relates to the technical field of power measurement, in particular to a household meter wiring test device and a test method based on power frequency distortion communication technology.

Background technique

The electric meters of urban residents are mostly installed in multi-meter meter boxes in unit buildings. Due to uncontrollable reasons such as construction errors, it is very likely that different electricity customers in the same meter box will "cross accounts", that is, customers The electricity meter used for electricity payment is inconsistent with the customer’s actual electricity consumption. Therefore, it is necessary to use the user meter relationship test device to test and judge the overall consistency of the customer’s meter to the outlet switch behind the meter, and the outlet switch to the customer’s actual power line to ensure the household meter relationship. The whole is correct and eliminates disputes between the power supply and the consumer.

The existing household meter relationship test device uses carrier communication technology and micro-power wireless communication technology to connect the household meter relationship test host and electric meter connected to the meter box installation place, and the slave machine (test terminal) installed in the customer's home. At the same time, through the host to test and compare the load current of the meter and the current signal of the slave terminal, analyze and judge, so as to draw a conclusion whether the relationship between the meter and the meter is consistent. Its disadvantage is that it is easy to generate carrier interference, common ground crosstalk, parallel transmission crosstalk, etc. during the peak period of customer electricity consumption or when using household appliances such as induction cooker and microwave oven, which will affect the accuracy and reliability of test judgment.

Contents of the invention

The object of the present invention is to address the above deficiencies, to provide a household meter wiring test device and its test method based on power frequency distortion communication technology, which overcomes the attenuation and susceptibility of power carrier communication under high noise and heavy load conditions. Interference and other factors, high detection reliability.

The solution adopted by the present invention to solve the technical problem is: a household meter wiring test device based on power frequency distortion communication technology, including a household meter main control unit connected to several electric meters, and a household meter detection unit electrically connected to the household meter main control unit. module, a PDA handheld terminal for wireless communication with the household meter detection module, and a power management terminal for mutual communication with the PDA handheld terminal; each ammeter is electrically connected to the main control unit of the household meter through a high-precision current clamp, Correspondingly affixed with a barcode on each meter; the power management terminal includes a storage module storing power user information and a communication interface module for data communication with the PDA handheld terminal; An infrared scanning module for barcodes, a data communication module for communicating with a power management terminal, and a wireless communication module for wirelessly communicating with a household meter detection module.

Further, the household meter detection module includes a micro-processing control unit, a wireless communication sub-module electrically connected to the micro-processing control unit, a power frequency signal transceiver module, a cache module and a power supply module, and the household meter detection module passes The wireless communication sub-module communicates wirelessly with the handheld PDA terminal; the household meter detection module is electrically connected to the household meter main control unit via a power frequency signal transceiver module.

Further, the household watch detection module also includes a USB interface module for connecting an extended storage device.

The present invention also provides a test method of the household meter wiring test device based on the power frequency distortion communication technology as described above,

Step S1: Before the test, the operator obtains the file information of the power user from the power management terminal through the handheld PDA terminal;

Step S2: Disconnect the connection between the handheld PDA terminal and the power management terminal, scan the barcode on the meter to obtain the file information of the corresponding meter at the household meter wiring detection site, and then transfer the file information of the power user to the corresponding meter through wireless communication. The file information is transmitted to the household meter detection module;

Step S3: The operator controls the household meter detection module through the handheld PDA terminal to start testing;

Step S4: At this time, the household meter detection module sends a power frequency load transmission signal to the household meter main control unit to start detection, and the household meter main control unit transmits the result of the power frequency signal collected by the current clamp to the household meter detection module;

Step S5: The operator reads the result of the power frequency signal collected by the current clamp through the handheld PDA terminal, and then uploads it to the power management terminal.

Further, in the step S4, the result collected by the current clamp is the archive information of the corresponding electric meter collected in the step S2.

Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts power frequency distortion communication technology and micro-power wireless communication technology, overcomes factors such as attenuation and susceptibility to interference of power line carrier communication under high noise and heavy load conditions , the power frequency distortion communication technology is a special power communication technology that uses the low-voltage distribution network as a channel to carry information by using the small distortion of the power frequency voltage and current waveform of the power grid. Its advantages are that there is no common-ground crosstalk and parallel transmission Crosstalk and other situations, the identification is accurate, fast, and highly reliable, which has obvious advantages over carrier communication technology.

Description of drawings

Below in conjunction with accompanying drawing, the patent of the present invention is further described.

Fig. 1 is a circuit block diagram of a household meter wiring test device according to an embodiment of the present invention.

Fig. 2 is a circuit block diagram of a household meter detection module according to an embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, a household meter wiring test device based on power frequency distortion communication technology in this embodiment includes a household meter main control unit connected to several electric meters, and a household meter main control unit electrically connected to the household meter main control unit. meter detection module, a PDA handheld terminal for wireless communication with the household meter detection module, and a power management terminal for mutual communication with the PDA handheld terminal; each ammeter is electrically connected to the main control unit of the household meter through a high-precision current clamp respectively, Each ammeter is correspondingly pasted with a barcode; the power management terminal includes a storage module storing power user information and a communication interface module for data communication with the PDA hand-held terminal; the hand-held PDA terminal includes a Infrared scanning module for barcode, data communication module for communication with power management terminal and wireless communication module for wireless communication with household meter detection module.

As can be seen from the above, the beneficial effects of the present invention are: the present invention connects the ammeters in the same area to the main control unit of the household meter through a high-precision current clamp respectively, obtains the archive information of each ammeter by the current clamp, and then converts the archive information Through the main control unit of the household meter, the signal transmission is carried out through the power frequency distortion communication technology, and the reliability is high; the file information of the electric meter obtained from the main control unit of the household meter and the user's information of the corresponding electric meter obtained from the PDA handheld terminal are obtained through the household meter detection module File information is compared to realize the test of household meter wiring relationship.

Further, the household meter detection module includes a micro-processing control unit, a wireless communication sub-module electrically connected to the micro-processing control unit, a power frequency signal transceiver module, a cache module and a power supply module, and the household meter detection module passes The wireless communication sub-module communicates wirelessly with the handheld PDA terminal; the household meter detection module is electrically connected to the household meter main control unit via a power frequency signal transceiver block. Using power frequency distortion communication technology and micro-power wireless communication technology, it can accurately, quickly and reliably test and judge the overall consistency from the user's meter to the outlet switch behind the meter, and from the outlet switch to the user's actual power line.

Further, the household watch detection module also includes a USB interface module for connecting an extended storage device.

The present invention also provides a test method of the household meter wiring test device based on the power frequency distortion communication technology as described above,

Step S1: Before the test, the operator obtains the file information of the power user from the power management terminal through the handheld PDA terminal;

Step S2: Disconnect the connection between the handheld PDA terminal and the power management terminal, scan the barcode on the meter to obtain the file information of the corresponding meter at the household meter wiring detection site, and then transfer the file information of the power user to the corresponding meter through wireless communication. The file information is transmitted to the household meter detection module;

Step S3: The operator controls the household meter detection module through the handheld PDA terminal to start testing;

Step S4: At this time, the household meter detection module sends a power frequency load transmission signal to the household meter main control unit to start detection, and the household meter main control unit transmits the power frequency result collected by the current clamp to the household meter detection module;

Step S5: The operator reads the result of the power frequency signal collected by the current clamp through the handheld PDA terminal, and then uploads it to the power management terminal.

Further, in the step S4, the result of the power frequency signal collected by the current clamp is the archive information of the corresponding electric meter collected in the step S2. The real-time update of user profile information is realized through the power management terminal.

To sum up, the present invention provides a household meter wiring test device based on power frequency distortion communication technology and its testing method, which adopts power frequency distortion communication technology and micro-power wireless communication technology to realize accurate and accurate wiring relationship of household meters. Fast, reliable test judgment.

The above preferred embodiments have further described the purpose, technical solutions and advantages of the present invention in detail. It should be understood that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present invention.

Claims (5)

1. A household meter wiring test device based on power frequency distortion communication technology, characterized in that: it includes a household meter main control unit connected to several electric meters, a household meter detection module electrically connected with the household meter main control unit, and a household meter A PDA handheld terminal for wireless communication of the detection module and a power management terminal for mutual communication with the PDA handheld terminal; Each ammeter is electrically connected to the main control unit of the household meter through a high-precision current clamp respectively, and a bar code is correspondingly pasted on each ammeter; The power management terminal includes a storage module storing power user information and a communication interface module for data communication with the PDA handheld terminal; The handheld PDA terminal includes an infrared scanning module for reading the barcode on the electric meter, a data communication module for communicating with the power management terminal, and a wireless communication module for wirelessly communicating with the household meter detection module. 2. The household meter wiring test device based on power frequency distortion communication technology according to claim 1, characterized in that: the household meter detection module includes a micro-processing control unit, a wireless communication device electrically connected to the micro-processing control unit Submodule, industrial frequency signal transceiver module, cache module and power supply module, the household meter detection module communicates wirelessly with the handheld PDA terminal through the wireless communication submodule; the household meter detection module communicates with the Electrically connected to the main control unit of the household meter. 3. The household meter wiring test device based on power frequency distortion communication technology according to claim 2, characterized in that: the household meter detection module further includes a USB interface module for connecting an extended storage device. 4. a method of testing of the household meter wiring tester based on power frequency distortion communication technology as described in any one of claim 1-3, it is characterized in that: Step S1: Before the test, the operator obtains the file information of the power user from the power management terminal through the handheld PDA terminal; Step S2: Disconnect the connection between the handheld PDA terminal and the power management terminal, scan the barcode on the meter to obtain the file information of the corresponding meter at the household meter wiring detection site, and then transfer the file information of the power user to the corresponding meter through wireless communication. The file information is transmitted to the household meter detection module; Step S3: The operator controls the household meter detection module through the handheld PDA terminal to start testing; Step S4: At this time, the household meter detection module sends a power frequency load transmission signal to the household meter main control unit to start detection, and the household meter main control unit transmits the result of the power frequency signal collected by the current clamp to the household meter detection module; Step S5: The operator reads the result of the power frequency signal collected by the current clamp through the handheld PDA terminal, and then uploads it to the power management terminal. 5. The test method of the household meter wiring test device based on power frequency distortion communication technology according to claim 4, characterized in that: in said step S4, the result of the power frequency signal collected by the current clamp is the corresponding electric meter in step S2 file information.