CN105223537B - A kind of electric energy meter is visited one house after another detection device and method - Google Patents

Abstract

The present application provides a device and method for detecting serial connections of electric energy meters. After sending the preset specific waveform signal generated by the signal generator to the power transmission line of the user to be tested, the signal receiver conducts current monitoring on the power transmission line of the electric energy meter to be tested. Sampling, and verifying whether the obtained sampled current signal contains the preset specific waveform signal, at this time, based on the verification result, it can be accurately known whether the electric energy meter to be tested is the electric energy meter of the user to be tested, without power failure, that is It can quickly and accurately realize the investigation of serial households and check the relationship between household meters to ensure the accuracy and reliability of the user's electricity consumption measurement, and at the same time avoid the impact on the user's normal electricity consumption, and does not require mutual cooperation between users, greatly improving work efficiency .

Description

Device and method for detecting serial connection of electric energy meters

technical field

This application mainly relates to the field of electric energy meter installation and verification, and more specifically relates to an electric energy meter serial detection device and method.

Background technique

During the installation and wiring of the electric energy meter, the line between the electric energy meter and the user is usually blocked by objects such as walls, and the outgoing line of the electric energy meter A is often connected to the user B, resulting in measurement errors. Therefore, after the staff installs the electric energy meters of each user in the area, they usually conduct on-site electric energy meter serial inspections to ensure that the electric energy meter lines are correct and reliable.

In order to check the situation of electric energy meters being connected to households, the existing technology usually adopts the method of switching off the power one by one, and then goes to the homes of all users who may be connected to households to check whether there is a power failure, so as to determine the corresponding relationship between the installed electric energy meters and the user lines. The method not only affects the normal power consumption of the user, but also requires the cooperation of multiple users, and the work efficiency is extremely low.

Contents of the invention

In view of this, the present invention provides a device and method for detecting electric energy meter serial connection, which solves the technical problem that the existing short circuit detection method affects the normal power consumption of users.

In order to achieve the above object, the application provides the following technical solutions:

A device for detecting serial connections of electric energy meters, said device comprising:

A signal generator that is connected to the power transmission line of the user to be tested and generates a preset specific waveform signal;

A signal receiver that is connected to the electric energy meter to be tested, performs current sampling on the transmission line of the electric energy meter to be tested, verifies whether the obtained sampled current signal contains the preset specific waveform signal, and outputs the verification result.

Preferably, the signal generator includes:

Adjustable load circuit;

A first processor that is connected to the adjustable load circuit, adjusts the current load of the adjustable load circuit, and generates a preset specific waveform signal;

An interface circuit connected to the first processor and the power transmission line of the user to be tested respectively.

Preferably, the signal generator also includes:

a power indicator connected to the first processor;

A first warning indicator that is connected to the first processor and is used to give an alarm when the preset specific waveform signal generated by the first processor verification does not meet the preset requirements.

Preferably, the adjustable load circuit includes: a thyristor conduction circuit connected in sequence, a high-power diode, a high-power adjustable resistor and a high-power fixed resistor, wherein:

The thyristor conduction circuit is connected to the first processor for generating a half-wave current signal;

The high-power adjustable resistor is connected to the first processor for adjusting the current amplitude of the half-wave current signal.

Preferably, the interface circuit includes a plurality of universal conversion plugs.

Preferably, the signal receiver includes:

A sampling circuit that performs current sampling on the transmission line of the electric energy meter to be tested, and performs preprocessing on the obtained sampling current signal;

A second processor that is connected to the sampling circuit and verifies whether the pre-processed sampling current signal includes the preset specific waveform signal;

A prompt circuit that is connected to the second processor and outputs a verification result.

Preferably, the sampling circuit includes: a clamp current sensor and a signal processing circuit;

The prompt circuit includes one or more combinations of a display circuit, an indicator light, a buzzer and a voice module;

Wherein, the display circuit is used to display the verification result;

The indicator light, the buzzer and the voice module are all used to output corresponding prompt information when the pre-processed sampled current signal contains the preset specific waveform signal.

A method for detecting serial connections of electric energy meters, the method comprising:

Send the generated preset specific waveform signal to the power transmission line of the user to be tested;

Conduct current sampling on the transmission line of the electric energy meter to be tested;

Verifying whether the obtained sampling current signal contains the preset specific waveform signal, and outputting a verification result.

Preferably, the output verification results include:

Display the verification result;

And/or, when the sampled current signal contains the preset specific waveform signal, corresponding prompt information is output.

Preferably, the method also includes:

Detecting whether the preset specific waveform signal generated to the power transmission line of the user under test meets a preset requirement;

If not, output a warning message.

It can be seen that, compared with the prior art, the present application provides a device and method for detecting the serial connection of electric energy meters. After sending the preset specific waveform signal generated by the signal generator to the transmission line of the user to be tested, the signal The receiver performs current sampling on the transmission line of the electric energy meter to be tested, and verifies whether the obtained sampled current signal contains the preset specific waveform signal. At this time, based on the verification result, it can accurately know whether the electric energy meter to be tested is the The energy meter of the user to be tested does not need to be powered off, which avoids the impact on the normal power consumption of the user, and does not require mutual cooperation between users, so that the household investigation and household meter relationship check can be quickly and accurately realized, which greatly improves work efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a kind of electric energy meter serial household schematic diagram;

Fig. 2 is a schematic structural diagram of an embodiment of an electric energy meter serial detection device provided by the present application;

Fig. 3 is a schematic structural diagram of a signal generator in an embodiment of an electric energy meter serial detection device provided by the present application;

Fig. 4 is a schematic structural diagram of a signal generator in another embodiment of an electric energy meter serial detection device provided by the present application;

Fig. 5 is a schematic structural diagram of a signal receiver in an embodiment of an electric energy meter string detection device provided by the present application;

FIG. 6 is a schematic flow diagram of an embodiment of a method for detecting strings of electric energy meters provided by the present application;

Fig. 7 is a schematic flow chart of a preferred embodiment of a method for detecting cross-connection of electric energy meters provided by the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

During the actual installation process of the electric energy meter, due to the obstruction of opaque objects, it is easy to have the phenomenon of collusion. As shown in Figure 1, the staff cannot directly see the electric energy meter and the user at the same time due to the obstruction. Connect with the electric energy meter B (in fact, it can be to connect the user outlet with the corresponding electric energy meter inlet), and connect the user B with the electric energy meter A (the correct connection should be the connection between the user N and the electric energy meter N), This would result in a metering operation in practical applications. In order to avoid this problem, in the prior art, after the switch of the electric energy meter is usually disconnected, it is checked whether the user has a power failure, thereby verifying whether the electric energy meter is the corresponding electric energy meter of the user, but this situation will inevitably affect the normal operation of the user. In addition, the power consumption also requires the cooperation of multiple users who may be connected to each other, and the work efficiency is low.

In order to improve this situation and at the same time ensure the correctness of electricity metering by users who install electric energy meters, this application provides a device and method for detecting serial connections of electric energy meters, by sending the preset specific waveform signal generated by the signal generator to After reaching the power transmission line of the user to be tested, the signal receiver performs current sampling on the power transmission line of the power meter to be tested, and verifies whether the obtained sampled current signal contains the preset specific waveform signal. At this time, based on the verification result, Accurately know whether the electric energy meter to be tested is the electric energy meter of the user to be tested, and can quickly and accurately realize the serial household investigation and household meter relationship check without power outage, ensuring the accuracy and reliability of the user's electricity consumption measurement, and avoiding the The impact on the normal power consumption of users, and without the mutual cooperation between users, greatly improves the work efficiency.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 2, it is a schematic structural diagram of an embodiment of an electric energy meter serial detection device provided by the present application. The device may include: a signal generator 100 and a signal receiver 200, wherein:

The signal generator 100 can be set at the user end, that is, can be connected to the power transmission line of the user to be tested (such as the line inlet of the user to be tested), and generate a preset specific waveform signal.

In the practical application of this embodiment, the signal generator 100 can be powered by AC 220V, for example, it can be directly connected to the user's indoor power supply. It should be noted that, for the generated preset specific waveform signal, it is necessary to distinguish it from the user load signal, so as to ensure that the signal receiver 200 can accurately identify the preset specific waveform signal. Specific parameters of the waveform signal are not limited, as long as the above requirements can be met.

Based on this, in practical applications, preferably, the preset specific waveform signal can be an AC signal with an amplitude of 0.1A-1A (unit: ampere), the same frequency as the mains frequency and only a positive half-wave, but not limited to this.

For this, as shown in FIG. 3 , the signal generator 100 may include: an adjustable load circuit 110, a first processor 120 and an interface circuit 130, wherein:

The first processor 120 is connected to the adjustable load circuit 110, and generates a preset specific waveform signal by adjusting the current load of the adjustable load circuit 110. Specifically, the adjustment scheme can be determined according to the circuit structure of the adjustable load circuit 110, The present application does not specifically limit this, as long as a preset specific waveform signal meeting the above requirements can be generated.

Optionally, the adjustable load circuit 110 may include sequentially connected thyristor conduction circuits, high-power diodes, high-power adjustable resistors, and high-power fixed resistors. A circuit is connected to the first processor for generating a half-wave current signal to be distinguished from a user load signal (which is usually a full-wave signal). Specifically, this implementation can control the conduction of different devices of the thyristor conduction circuit to make it output a positive half-wave current or a negative half-wave current signal. This application does not limit its specific control process, as long as it can generate A half-wave current signal is sufficient.

In addition, the high-power adjustable resistor is connected to the first processor 120. In practical applications, the high-power adjustable resistor is controlled by the first processor 120 to adjust the half-wave current signal output by the thyristor conduction circuit. Specifically, the amplitude can be changed cyclically between 0.1A and 1A.

Wherein, the above-mentioned high-power devices can be selected according to actual needs, and the application does not limit the specific models of the above-mentioned diodes, adjustable circuits and fixed resistors.

In addition, the interface circuit 130 can be respectively connected to the first processor 120 and the power transmission line of the user to be tested (the inlet or outlet can be selected according to actual needs), so as to supply power to the signal generator 100 to make its components work.

Optionally, the interface circuit 130 may include a plurality of universal conversion plugs, so as to be suitable for AC sockets in the user's room to be tested; The AC socket in the test user's room is connected, or the plug in the test user's room is directly connected to it. This application does not limit this, as long as the signal generator 100 can be connected to the mains of the test user.

As another embodiment of the present application, on the basis of the above embodiments, as shown in FIG. 4 , the signal generator 100 may further include: a power indicator 140 and a first warning indicator 150, wherein:

The power indicator 140 can be connected with the first processor. When the interface circuit 130 is connected to the mains, the power indicator can output an indication signal so that the staff can intuitively know whether the signal generator 100 is powered on.

Optionally, the power indicator 140 may be an indicator light, a voice module, etc., which are not limited in this application.

The first warning indicator 150 may be connected to the first processor 120, and when the first processor 120 verifies that the preset specific waveform signal generated by the signal generator 100 does not meet the preset requirements, the first warning indicator 150 may be used to perform Alarm, in order to inform the staff of this situation in time. Therefore, in practical applications, the first warning indicator 150 may be another indicator light, buzzer or voice module, etc. different from the power indicator. When the specific waveform signal does not meet the verification result of the preset requirements, the corresponding alarm information will be output, such as the flashing indicator light, buzzer sound or voice signal, etc.

It can be seen that, during the process of controlling the adjustable load circuit 110 to generate the preset specific waveform signal, the first processor 120 can detect in real time whether the actual output signal meets the preset requirement, that is, judge the amplitude, Whether the frequency and other parameters meet the preset values, so that when the judgment result is inconsistent, the alarm information is output in time, so as to adjust the actual output waveform signal in time to ensure that the detection result of the detection device is reliable.

Optionally, on the basis of the above-mentioned embodiments, as shown in FIG. 4 , the signal generator 100 may also include a control switch circuit 160 for enabling the signal generator 100 to output a preset specific waveform signal. Of course, in After the interface circuit 130 is connected to the mains, the control switch can also control whether the signal generator 100 is powered on.

Based on this, in practical applications, the control switch circuit 160 may include a button. When it is necessary to perform a serial user detection and the detection device is installed, the staff can start the signal generator 100 through the button, but it is not limited to Here, the signal generator 100 can also be activated by means of voice control, etc. At this time, the control switch circuit can include a sound collection and recognition module, etc., which can be determined according to actual needs, and will not be described in detail here.

The signal receiver 200 can be connected with the electric energy meter to be tested. In practical application, current sampling can be performed on the transmission line of the electric energy meter to be tested (specifically, it can be its line inlet), and it can be verified whether the obtained sampled current signal contains After the specific waveform signal is preset, the verification result is output, so that the staff can judge whether the connection of the electric energy meter of the user to be tested is correct based on the verification result, and then judge whether the installation of the electric energy meter in this area has a cross-connection phenomenon, and when the electric energy meter occurs Make timely adjustments when the meters are connected to each other to ensure the correct installation of the electric energy meters in the area and realize the correct measurement of the electricity consumption of each user.

Optionally, as shown in FIG. 5, the signal receiver 200 may include: a sampling circuit 210, a second processor 220, and a prompt circuit 230, wherein:

The sampling circuit 210 can be connected to the power transmission line of the electric energy meter to be tested, so as to perform current sampling on it, and preprocess the obtained sampling current signal, such as performing shaping, filtering, amplification and other processing on the sampling current signal, so as to obtain A pure current signal to ensure the accuracy and reliability of the second processor 220's verification.

It can be seen that the sampling circuit 210 may include a clamp current sensor and a signal processing circuit. In practical applications, the clamp current sensor is directly clamped at the outgoing line of the electric energy meter to be measured, and the current signal at the outgoing line is collected, wherein, The current signal includes a preset specific waveform signal generated by the signal generator 100 , and after the signal processing circuit preprocesses the collected current signal, the obtained current signal is sent to the second processor 220 .

The second processor 220 is connected to the sampling circuit 210, specifically as described in the above-mentioned embodiment, the second processor 220 is connected to the signal processing circuit in the sampling circuit 210, and verifies whether the pre-processed sampling current signal contains the preset specific Waveform signal, and output the verification result through the prompt circuit 230 connected to the second processor 220, at this time, the staff can visually see whether the electric energy meter to be tested corresponds to the user to be tested, without power failure, also can It is judged whether the electric energy meter stringing phenomenon occurs in the area.

Specifically, when it is verified that the pre-processed sampling current signal contains a preset specific waveform signal, it means that the electric energy meter to be tested is the electric energy meter of the user to be tested, and no serial connection has occurred in it. According to this detection method, the electric energy meter can be detected Check whether the energy meter connected to each user in the area is the corresponding energy meter, so as to judge whether the installation of the energy meter in the area has occurred. Moreover, when it is verified that the pre-processed sampling current signal does not contain a preset specific waveform signal, another electric energy meter can be used as the electric energy meter to be tested, and the signal receiver 200 is connected to the outlet end of the electric energy meter to be tested, According to the above method, verify whether the pre-processed sampling current signal obtained at this time contains the preset specific waveform signal, and so on, until the preset specific waveform signal is verified, the current electric energy meter to be tested is the electric energy of the user to be tested meter, and after the inspection, re-wire the energy meter based on the verification result.

As shown in Figure 2, the signal generator 100 is connected to the incoming line terminal L1' of user A, and the signal receiver 200 is connected to the outgoing line terminal L1 of the electric energy meter B. According to the above method, the signal generator 100 outputs a preset specific waveform signal Afterwards, at this time, the signal receiver 200 will not be able to receive the preset specific waveform signal, and it can be connected to the outlet terminal L2 of the electric energy meter A. If it is verified that the preset specific waveform signal is received at this time, it means that the electric energy meter A and the Corresponding to user A, the outgoing terminal L2 of electric energy meter A can be connected to the incoming terminal L1' of user A. Of course, if the preset specific waveform signal cannot be received at this time, the signal receiver 200 will be connected to another The energy meters are connected until the energy meters corresponding to user A are detected.

Of course, when it is verified that the pre-processed sampling current signal does not contain a preset specific waveform signal, the signal generator 100 can also be connected to another user's power transmission line. After starting the signal generator 100, the signal receiver 200 re-verifies whether the preset specific waveform signal is received, and so on, until the signal receiver 200 receives the preset specific waveform signal, the electric energy meter to be tested corresponds to the current user to be tested, and accordingly the electric energy meter is reset Wiring, the specific process of this application will not be described in detail here.

In summary, on the basis of the optional embodiment shown in Figure 5, combined with the circuit structure of the signal generator shown in Figure 3 above, in practical applications, when a preset specific waveform signal is applied to a subscriber line , since the electric energy meters are installed centrally, in this embodiment, the second processor 220 can quickly control the sampling circuit 210 to perform current sampling on different electric energy meter outlets (that is, the clamp current sensor can be quickly clamped to different electric energy meters. Outlet terminal), so as to find the electric energy meter corresponding to the user line applying the preset specific waveform signal at one time, and continue to check other users according to this method, so as to quickly and accurately realize the serial household investigation and the household meter relationship check , greatly improving the working efficiency of the detection device.

As yet another embodiment of the present application, in practical applications, the prompt circuit 230 may include a combination of one or more of a display circuit, an indicator light, a buzzer and a voice module, which may be selected according to actual needs.

In the practical application of this yet another embodiment, the verification result of the second processor 220 may be displayed through a display line, such as expressing the verification result by text or specific symbols, which is not specifically limited in this application.

Of course, when the verification result of the second processor 220 shows that the pre-processed sampled current signal contains a preset specific waveform signal, the corresponding prompt information can be output through the above-mentioned indicator light, buzzer and/or voice module, Such as the flashing of the preset indicator light, buzzer or voice signal, etc., but not limited thereto.

In addition, the applicant needs to explain that, for each of the above-mentioned embodiments, the detection device can also be used for guidance during the installation process of the electric energy meter. The specific process is similar to the above, and the present application will not describe it in detail here.

Wherein, in order to ensure the accuracy and reliability of the detection result, the signal generator 100 and the signal receiver 200 are generally corresponding, and only one user can be detected at a time.

To sum up, in this embodiment, after sending the preset specific waveform signal generated by the signal generator to the power transmission line of the user to be tested, the signal receiver performs current sampling on the power transmission line of the electric energy meter to be tested, and verifies the obtained sampling Whether the current signal contains the preset specific waveform signal, at this time, based on the verification result, it can be accurately known whether the energy meter to be tested is the energy meter of the user to be tested, and the user can be connected quickly and accurately without power failure. Examination and household meter relationship checks ensure the accuracy and reliability of the user's electricity consumption measurement, and at the same time avoid the impact on the user's normal electricity consumption, and do not require mutual cooperation between users, which greatly improves work efficiency.

As shown in FIG. 6 , it is a schematic flow chart of an embodiment of a method for detecting strings of electric energy meters provided by the present application. This method can be applied to the device for detecting strings of electric energy meters described in the above device embodiments. In this embodiment, The method specifically may include the following steps:

Step S610: Send the generated preset specific waveform signal to the power transmission line of the user to be tested.

Wherein, the preset specific waveform signal may be a half-wave current signal whose amplitude varies from 0.1A to 1A and whose frequency is the same as that of the commercial power. Specifically, the signal generator may be controlled to generate the preset specific waveform signal in the above manner. That is, the half-wave current signal with the same frequency as the commercial power can be obtained, and the amplitude of the half-wave current signal is adjusted to between 0.1A and 1A. This application does not limit the specific acquisition process of the preset specific waveform signal. As long as the current signal meeting the above requirements can be obtained.

As described in the corresponding part of the above-mentioned device embodiment, the signal generator can be connected to the incoming line terminal or outgoing line end of the user to be tested, so that the preset specific waveform signal generated by the signal generator can be transmitted to the power transmission line of the user to be tested. line.

Optionally, for the preset specific waveform signal generated by the signal generator, the application can also detect whether the preset specific waveform signal actually sent to the power transmission line of the user to be tested meets the preset requirements, and if not, an alarm message can be output , so that the staff can adjust the waveform signal output by the signal generator in time.

Wherein, the preset requirement may be the above-mentioned requirement on parameters such as the amplitude, frequency, and half-wave of the specific waveform signal, and the present application does not limit its specific content.

Step S620: Perform current sampling on the transmission line of the electric energy meter to be tested.

In combination with the description of the corresponding part of the above device embodiment, in this implementation, the signal receiver can be connected to the outgoing line of the electric energy meter to be tested, so as to collect the current signal at the outgoing line of the electric energy meter to be tested.

Step S630: Verify whether the obtained sampled current signal contains the preset specific waveform signal, and output a verification result.

In the practical application of this embodiment, in order to improve the accuracy and reliability of the subsequent detection results, preprocessing such as shaping, filtering, and amplification can be performed on the collected sampling current signal, and then the preprocessed sampling current signal can be verified. The present application does not limit the specific implementation methods of these preprocessing. Moreover, the present application can use existing waveform detection and identification methods to verify whether the preprocessed sampling current signal contains a preset specific waveform signal, and the present application does not specifically limit the verification method.

Optionally, the output method of the above-mentioned verification result may include: directly displaying the verification result through a display circuit (such as a display), and/or, when the obtained sampling current signal contains the preset specific waveform signal, outputting a corresponding Prompt information. Wherein, the present application does not limit the specific output mode of the prompt information, which may be output in ways such as indicator light flashing, buzzing sound, and voice signal.

To sum up, in this embodiment, after sending the preset specific waveform signal generated by the signal generator to the power transmission line of the user to be tested, the signal receiver performs current sampling on the power transmission line of the electric energy meter to be tested, and verifies the obtained sampling current Whether the signal contains the preset specific waveform signal, at this time, based on the verification result, it can be accurately known whether the energy meter to be tested is the energy meter of the user to be tested, and the serial household investigation can be quickly and accurately realized without power failure Check with the household meter relationship to ensure the accuracy and reliability of the user's electricity consumption measurement, while avoiding the impact on the user's normal electricity consumption, and without the need for mutual cooperation between users, greatly improving work efficiency.

As shown in Fig. 7, based on the above analysis, the present application proposes a schematic flow chart of a preferred embodiment of a method for detecting strings of electric energy meters. The method may include the following steps:

Step S710: Generate a preset specific waveform signal.

Step S720: verify whether the currently generated preset specific waveform signal meets the preset requirements, if not, execute step S730; if yes, execute step S740.

Step S730: Outputting a corresponding alarm signal.

In the actual application of this embodiment, the specific output mode of the alarm signal is not limited, as long as the staff can accurately and quickly obtain that the currently generated preset specific waveform signal does not meet the preset requirements, and adjust the control parameters in time.

Of course, when the signal generator learns that the currently generated preset specific waveform signal does not meet the preset requirements, the first processor can automatically adjust the control parameters until the generated preset specific waveform signal meets the preset requirements. The specific adjustment method is not limited.

Step S740: Send the generated preset specific waveform signal to the incoming line terminal of the user to be tested.

Step S750: Perform current sampling at the outlet terminal of the electric energy meter to be tested, and perform preprocessing on the obtained sampled current signal.

Wherein, the preprocessing process may include processing processes such as shaping, filtering, and amplifying, but is not limited thereto.

Step S760: Verify whether the preprocessed sampled current signal contains a preset specific waveform signal. If yes, execute step S770; if no, end the process.

Step S770: Output corresponding prompt information.

In this embodiment, the prompt information can be used to inform the staff that the current electric energy meter to be tested corresponds to the user to be tested by means of text, indicator light flashing, buzzer or voice signal.

To sum up, in this embodiment, after sending the preset specific waveform signal generated by the signal generator to the power transmission line of the user to be tested, the signal receiver performs current sampling on the power transmission line of the electric energy meter to be tested, and obtains The sampled current signal contains the preset specific waveform signal, indicating that the current user to be tested corresponds to the energy meter to be tested. On the contrary, it is necessary to continue to detect the energy meter to be tested corresponding to the user to be tested according to this method, so as to complete the test accurately and quickly. For the verification of the installed electric energy meter, without power outage, it can quickly and accurately realize the investigation of households and the relationship between household meters, so as to ensure the accuracy and reliability of the user's electricity consumption measurement, and at the same time avoid the impact on the normal electricity consumption of the user. And without mutual cooperation between users, the work efficiency is greatly improved.

Finally, it should be noted that, with respect to the above-mentioned embodiments, relative terms such as first, second, etc. are only used to distinguish one operation, device or circuit from another operation, device or circuit, and not Any such actual relationship or order between such devices, operations or circuits is necessarily required or implied. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method or circuit comprising a set of elements includes not only those elements but also other elements not expressly listed elements, or elements inherent in such a process, method, or system. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method or system comprising said element.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the method disclosed in the embodiment, since it corresponds to the device disclosed in the embodiment, the description is relatively simple, and for relevant details, please refer to the description of the device part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. An electric energy meter serial household detection device, is characterized in that, described device comprises: A signal generator that is connected to the power transmission line of the user to be tested and generates a preset specific waveform signal; A signal receiver that is connected to the electric energy meter to be tested, performs current sampling on the transmission line of the electric energy meter to be tested, verifies whether the obtained sampled current signal contains the preset specific waveform signal, and outputs a verification result; Wherein, the signal generator includes: Adjustable load circuit; A first processor that is connected to the adjustable load circuit, adjusts the current load of the adjustable load circuit, and generates a preset specific waveform signal; an interface circuit respectively connected to the first processor and the power transmission line of the user to be tested; Wherein, the adjustable load circuit includes: a thyristor conduction circuit, a high-power diode, a high-power adjustable resistor and a high-power fixed resistor connected in sequence, wherein: the thyristor conduction circuit and the first The processor is connected to generate a half-wave current signal; the high-power adjustable resistor is connected to the first processor and used to adjust the current amplitude of the half-wave current signal. 2. The device according to claim 1, wherein the signal generator further comprises: a power indicator connected to the first processor; A first warning indicator that is connected to the first processor and provides an alarm when the preset specific waveform signal generated by the first processor verification does not meet the preset requirements. 3. The device according to claim 1, wherein the interface circuit comprises a plurality of universal conversion plugs. 4. The device according to any one of claims 1-3, wherein the signal receiver comprises: A sampling circuit that performs current sampling on the transmission line of the electric energy meter to be tested, and performs preprocessing on the obtained sampling current signal; A second processor that is connected to the sampling circuit and verifies whether the pre-processed sampling current signal includes the preset specific waveform signal; A prompt circuit that is connected to the second processor and outputs a verification result. 5. The device according to claim 4, wherein the sampling circuit comprises: a clamp current sensor and a signal processing circuit; The prompt circuit includes one or more combinations of a display circuit, an indicator light, a buzzer and a voice module; Wherein, the display circuit is used to display the verification result; The indicator light, the buzzer and the voice module are all used to output corresponding prompt information when the pre-processed sampled current signal contains the preset specific waveform signal. 6. A method for detecting electric energy meter serial households, characterized in that the method comprises: Sending the generated preset specific waveform signal to the power transmission line of the user to be tested, the preset specific waveform signal is generated by adjusting the current load of the adjustable load circuit by the first processor; Conduct current sampling on the transmission line of the electric energy meter to be tested; Verifying whether the obtained sampling current signal contains the preset specific waveform signal, and outputting a verification result; Wherein, the adjustable load circuit includes: a thyristor conduction circuit, a high-power diode, a high-power adjustable resistor and a high-power fixed resistor connected in sequence, wherein: the thyristor conduction circuit and the first The processor is connected to generate a half-wave current signal; the high-power adjustable resistor is connected to the first processor and used to adjust the current amplitude of the half-wave current signal. 7. The method according to claim 6, wherein the output verification result comprises: Display the verification result; And/or, when the sampled current signal contains the preset specific waveform signal, corresponding prompt information is output. 8. The method according to claim 6, further comprising: Detecting whether the preset specific waveform signal generated to the power transmission line of the user under test meets a preset requirement; If not, output a warning message.