CN217360278U - Pulse acquisition module for electric energy meter calibration, error detector and error detection device - Google Patents
Pulse acquisition module for electric energy meter calibration, error detector and error detection device Download PDFInfo
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- CN217360278U CN217360278U CN202123030588.XU CN202123030588U CN217360278U CN 217360278 U CN217360278 U CN 217360278U CN 202123030588 U CN202123030588 U CN 202123030588U CN 217360278 U CN217360278 U CN 217360278U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/30—Smart metering, e.g. specially adapted for remote reading
Abstract
The utility model discloses a pulse collection module and error detector and device for electric energy meter calibration belongs to electric energy meter calibration equipment technical field. The existing electric meter calibration has a complicated detection process, and the calibration efficiency of the electric energy meter, particularly the Internet of things electric energy meter, is influenced. The invention discloses a pulse acquisition module for checking an electric energy meter, which is provided with at least three independent pulse acquisition circuits for sampling pulses of various electric energy meters and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit. The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric acquisition ware output, different detection requires to keep different detection circuitry closed, guarantees other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, and the check-up is with low costs, and detection efficiency is high.
Description
Technical Field
The utility model relates to a pulse acquisition module and error detector and device for electric energy meter calibration belongs to electric energy meter calibration equipment technical field.
Background
Most of the existing electric energy meter inspection devices adopt a standard meter method to inspect the electric energy meter, and pulses output by the inspected electric energy meter are used for controlling the counting of the standard electric energy meter to determine the relative error of the electric energy meter. At present, the inspection device utilizes an error detector to collect output pulses of the electric energy meter, and mainly has two modes: one is acquired through an auxiliary needle of the electric energy meter, the physical connection mainly depends on an auxiliary needle line or an aircraft nose clip line, and the other is that a photoelectric collector acquires LED signals of the electric energy meter.
However, the existing error detector cannot be compatible with the auxiliary needle circuit and the photoelectric acquisition circuit, so that different error detectors need to be replaced when different types of detected electric energy meter pulses are acquired, the detection cost is high, and the detection efficiency is low.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims at providing a multi-pulse acquisition circuit structure, which is provided with at least three independent pulse acquisition circuits, wherein each independent pulse acquisition circuit comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit; can select different acquisition circuits according to the electric energy meter of different grade type to be suitable for various electric energy meters, the check-up is with low costs, and detection efficiency is high, effectively avoids the pulse acquisition module of the potential safety hazard that the improper wiring brought.
The utility model discloses a second aim at provides a set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the auxiliary needle, the bluetooth converter, the electric energy meter pulse of photoelectric collection station output, different detection requirement keeps different detection circuitry closed, guarantee other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, the scheme is simple, and is practical, effectively avoided the manual loaded down with trivial details operation of changing the line of traditional calibrating installation and carrying out the test, improve calibration efficiency, avoid the error detector of the dangerous potential safety hazard that the improper wiring brought.
The third purpose of the utility model is to provide a multi-pulse acquisition circuit structure, which is provided with at least three independent pulse acquisition circuits, wherein each independent pulse acquisition circuit comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit; can select different acquisition circuits according to the electric energy meter of different grade type to be suitable for various electric energy meters, the check-up is with low costs, and detection efficiency is high, effectively avoids the error detection device of the potential safety hazard that the improper wiring brought.
In order to achieve one of the above objects, the first technical solution of the present invention is:
a pulse acquisition module for checking an electric energy meter,
the device is provided with at least three independent pulse acquisition circuits for sampling pulses of various electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit;
the auxiliary needle acquisition circuit is used for receiving electric energy meter pulses output by the auxiliary needle;
the photoelectric acquisition circuit is used for receiving the electric energy meter pulse output by the photoelectric acquisition device
The Bluetooth acquisition circuit is used for receiving the electric energy meter pulse output by the Bluetooth converter;
according to the type of the electric energy meter, one of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit is kept closed, and the rest of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are kept open.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, the check-up is with low costs, detection efficiency is high, the scheme is simple, and is practical, convenient to popularize and use, user experience is good.
Furthermore, the utility model discloses can be applicable to the pulse acquisition of various electric energy meters, especially thing allies oneself with the table, the accessible switches acquisition circuit, realizes the pulse acquisition of all kinds of electric energy meters, has effectively avoided the manual loaded down with trivial details operation of changing the line of traditional calibrating installation and carrying out the test, very big improvement check efficiency, avoided the improper danger that brings of wiring.
As a preferable technical measure:
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay is connected with the diode in series;
the relay is used for controlling the on-off of the circuit;
the diode is used for anti-interference processing of the circuits, anti-interference components are designed between the circuits, mutual interference is avoided, error data are generated, and pulse acquisition precision is influenced.
As a preferable technical measure:
a floating resistor R1 is electrically connected on the common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit,
the resistance value of the floating resistor R1 is 10K omega, and the floating resistor R1 is used for avoiding the interference of floating signals.
As a preferable technical measure:
the floating resistor R1 is connected in series with a high-voltage prevention module,
the high-voltage prevention module is used for avoiding damage caused by short circuit of the circuit.
As a preferable technical measure:
the high-voltage prevention module comprises an optocoupler V1, a high-voltage resistant diode D4 and a high-voltage resistant diode D5;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are assembled on the primary side of the optical coupler V1;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are connected in parallel;
when the pulse signal is low, the high-voltage resistant diode D4 is conducted, when the pulse signal is high, the optocoupler V1 and the high-voltage resistant diode D5 are conducted, and at the moment, as long as the pulse signal level is lower than the reverse conduction voltage of the high-voltage resistant diode D4, the high-voltage resistant diode D4 can protect a rear circuit from being damaged, so that the damage of high voltage caused by miswiring or other short circuits to an error detector is avoided.
In order to achieve one of the above objects, the second technical solution of the present invention is:
an error detector for checking an electric energy meter,
comprises the pulse acquisition module for electric energy meter calibration and the error calculation module,
and the error calculation module is used for determining the relative error of the detected electric energy meter by controlling the metering standard counting through the pulse output by the detected electric energy meter.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, the check-up is with low costs, detection efficiency is high, the scheme is simple, and is practical, convenient to popularize and use, user experience is good.
Furthermore, the utility model discloses can be applicable to the pulse collection of various electric energy meters, especially thing allies oneself with the table, effectively avoid the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation that tests, very big improvement calibration efficiency, avoided the improper danger that brings of wiring.
Further, the utility model discloses can receive the pulse of measurement standard output, confirm the relative error who is examined intelligent ammeter with the pulse control measurement standard count of examining intelligent ammeter output.
As a preferable technical measure:
the pulse acquisition module is electrically connected with a circuit switching control module and a pulse receiving module;
the circuit switching control module is used for receiving a PC end or user operation instruction and controlling the action of the relay;
and the pulse receiving module is used for receiving the pulse output by the electric energy meter.
As a preferable technical measure:
further comprising: the device comprises an alternating current power supply module and a metering standard module;
the alternating current power supply module is used for increasing voltage and current for the electric energy meter, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current source;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing a standard metering pulse as a metering standard of active error detection;
and the clock instrument is used for providing standard clock pulses as a metering standard for detecting the time of day.
In order to achieve one of the above objects, the third technical solution of the present invention is:
an error detector for checking an electric energy meter,
the device is provided with at least three independent pulse acquisition circuits for measuring the performance of various electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit, a Bluetooth acquisition circuit, a floating resistor R1 and an anti-high voltage module;
the auxiliary needle acquisition circuit is provided with a relay K1 and a diode D1 and is used for receiving electric energy meter pulses output by the auxiliary needle;
the photoelectric acquisition circuit is provided with a relay K2 and a diode D2 and is used for receiving electric energy meter pulses output by the photoelectric acquisition device
The Bluetooth acquisition circuit is provided with a relay K3 and a diode D3 and is used for receiving the electric energy meter pulse output by the Bluetooth converter;
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay K1 is connected with the diode D1 in series and used for controlling the on-off of the auxiliary needle acquisition circuit and carrying out anti-interference treatment on the auxiliary needle acquisition circuit;
the relay K2 is connected with the diode D2 in series and used for controlling the on-off of the photoelectric acquisition circuit and carrying out anti-interference treatment on the photoelectric acquisition circuit;
the relay K3 is connected with the diode D3 in series and used for controlling the on-off of the Bluetooth acquisition circuit and carrying out anti-interference processing on the Bluetooth acquisition circuit;
the floating resistor R1 is arranged on a common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit and is used for avoiding interference of floating signals on the circuits;
the floating resistor R1 is connected in series with a high-voltage prevention module;
the high-voltage prevention module is provided with a high-voltage resistant diode and is used for avoiding damage caused by circuit short circuit.
When the electric energy pulse is collected through the auxiliary needle port, the error detector sends a switching command to control the three relays, the relay K1 is kept closed, and the relay K2 and the relay K3 are disconnected;
when the electric energy pulse is collected through the Bluetooth port, the error detector sends a switching instruction to control the three relays, the relay K2 is kept closed, and the relay K1 and the relay K3 are disconnected;
when the photoelectric acquisition port is used for acquiring the electric energy pulse, the error detector sends a switching instruction to control the three relays, the relay K3 is kept closed, and the relay K1 and the relay K2 are disconnected, namely, the other two circuits are disconnected when one circuit is closed.
The pulse behind the acquisition circuit firstly enters the error detector through the high-voltage prevention module, so that the damage of high voltage caused by error wiring or other short circuits to error detection components is prevented.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, the check-up is with low costs, detection efficiency is high, the scheme is simple, and is practical, convenient to popularize and use, user experience is good.
Furthermore, the utility model discloses can be applicable to the pulse collection of various electric energy meters, especially thing allies oneself with the table, effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, very big improvement calibration efficiency, avoided the improper danger that brings of wiring.
In order to achieve one of the above objects, a fourth technical solution of the present invention is:
an error detection device for checking an electric energy meter,
the method comprises the following steps: the error detector is used for checking the electric energy meter;
the alternating current power supply module is used for increasing voltage and current for the electric energy meter, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current source;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing a standard metering pulse as a metering standard of active error detection;
the clock instrument is used for providing standard clock pulses as a metering standard for detecting in diary time;
the measuring standard module is connected with the error detector in a wire arrangement mode;
the error detector is provided with an error calculation module which is used as a module for measuring the performance of the electric energy meter and can selectively receive the electric energy meter pulses output by the auxiliary needle, the Bluetooth converter and the photoelectric collector, different detection circuits are kept closed according to different detection requirements, and other two paths of detection circuits are simultaneously ensured to be disconnected.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric acquisition ware output, different detection requirement keeps different detection circuitry closed, guarantees simultaneously that other two way detection circuitry break off, can be applicable to various electric energy meters, and the scheme is simple, and is practical, convenient to popularize and use, and user experience is good.
Furthermore, the utility model discloses can compatible traditional electric energy meter pulse detection, the programme-controlled mode of accessible switches, has effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, has avoided the danger that the wiring is improper to be brought.
Further, the utility model discloses can receive the pulse of measurement standard output, confirm to be examined the relative error of intelligent ammeter with the pulse control measurement standard count of being examined intelligent ammeter output.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectric acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees other two way detection circuitry disconnection simultaneously, can be applicable to various electric energy meters, the check-up is with low costs, detection efficiency is high, the scheme is simple, and is practical, convenient to popularize and use, user experience is good.
Furthermore, the utility model discloses can be applicable to the pulse collection of various electric energy meters, especially thing allies oneself with the table, effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, very big improvement calibration efficiency, avoided the improper danger that brings of wiring.
Drawings
Fig. 1 is a structural diagram of the pulse acquisition module of the present invention;
FIG. 2 is a schematic view of the error detection device of the present invention;
fig. 3 is a detection diagram applying the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
As shown in fig. 1, the utility model discloses a specific embodiment of pulse collection module:
a pulse acquisition module for checking an electric energy meter,
the device is provided with at least three independent pulse acquisition circuits for sampling the pulses of various tested electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit;
the auxiliary needle acquisition circuit is used for receiving the pulse of the measured electric energy meter output by the auxiliary needle;
the photoelectric acquisition circuit is used for receiving the pulse of the measured electric energy meter output by the photoelectric collector
The Bluetooth acquisition circuit is used for receiving the pulse of the measured electric energy meter output by the Bluetooth converter;
according to the type of the electric energy meter to be tested, one of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit is selected to be kept closed, and the other circuits are kept disconnected.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectricity acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the quilt survey electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees simultaneously that other two way detection circuitry break off, can be applicable to various electric energy meters, and the scheme is simple, and is practical, convenient to popularize and use, and user experience is good.
Furthermore, the utility model discloses can compatible traditional electric energy meter pulse collection, the programme-controlled mode of accessible switches, has effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, has avoided the danger that the wiring is improper to be brought.
The utility model discloses add a concrete embodiment of relay and diode:
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay is connected with the diode in series;
the relay is used for controlling the on-off of the circuit;
the diode is used for anti-interference processing of the circuits, anti-interference components are designed between the circuits, mutual interference is avoided, error data are generated, and pulse acquisition precision is influenced.
The utility model discloses add a concrete embodiment of jam-proof structure:
a floating resistor R1 is electrically connected on the common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit,
the resistance value of the floating resistor R1 is 10K omega, and the floating resistor R1 is used for avoiding the interference of floating signals.
The utility model discloses increase a concrete embodiment of seting up defences short circuit structure:
the high-voltage prevention module is used for avoiding damage caused by short circuit of the circuit.
The high-voltage prevention module comprises an optocoupler V1, a high-voltage resistant diode D4 and a high-voltage resistant diode D5;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are assembled on the primary side of the optical coupler V1;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are connected in parallel;
when the pulse signal is low, the high-voltage resistant diode D4 is conducted, when the pulse signal is high, the optocoupler V1 and the high-voltage resistant diode D5 are conducted, and at the moment, as long as the pulse signal level is lower than the reverse conduction voltage of the high-voltage resistant diode D4, the high-voltage resistant diode D4 can protect a rear circuit from being damaged, so that the damage of high voltage caused by miswiring or other short circuits to an error detector is avoided.
The utility model discloses an error detector's a concrete embodiment:
an error detector for checking an electric energy meter,
the pulse acquisition module for the electric energy meter calibration is included,
and the error calculation module is used for determining the relative error of the detected electric energy meter by controlling the metering standard counting through the pulse output by the detected electric energy meter.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectricity acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the quilt survey electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees simultaneously that other two way detection circuitry break off, can be applicable to various electric energy meters, and the scheme is simple, and is practical, convenient to popularize and use, and user experience is good.
Furthermore, the utility model discloses can compatible traditional electric energy meter pulse detection, the accessible is programme-controlled mode and is switched over, has effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, has avoided the danger that the wiring is improper to be brought.
Further, the utility model discloses can receive the pulse of measurement standard output, confirm the relative error who is examined intelligent ammeter with the pulse control measurement standard count of examining intelligent ammeter output.
The utility model discloses error detector adds a concrete embodiment of control measurement structure:
the utility model discloses an error detector includes circuit switching control module, pulse receiving module, alternating current power supply module, measurement standard module, error calculation module.
And the circuit switching control module is used for receiving a PC (personal computer) end or a user operation instruction and controlling the action of the relay.
And the pulse receiving module is used for receiving the pulse output by the tested electric energy meter.
The alternating current power supply module is used for increasing voltage and current of the electric energy meter to be tested, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current power supply;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing standard metering pulses as the metering standard of active error detection;
and the clock instrument is used for providing standard clock pulses as a metering standard for detecting the time of day.
The utility model discloses error detector a best concrete embodiment:
an error detector for checking an electric energy meter,
the device is provided with at least three independent pulse acquisition circuits for measuring the performance of various tested electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit, a Bluetooth acquisition circuit, a floating resistor R1 and a high-voltage prevention module;
the auxiliary needle acquisition circuit is provided with a relay K1 and a diode D1 and is used for receiving the pulse of the measured electric energy meter output by the auxiliary needle;
the photoelectric acquisition circuit is provided with a relay K2 and a diode D2 and is used for receiving the pulse of the measured electric energy meter output by the photoelectric acquisition device
The Bluetooth acquisition circuit is provided with a relay K3 and a diode D3 and is used for receiving the pulse of the measured electric energy meter output by the Bluetooth converter;
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay K1 is connected with the diode D1 in series and used for controlling the on-off of the auxiliary needle acquisition circuit and carrying out anti-interference treatment on the auxiliary needle acquisition circuit;
the relay K2 is connected with the diode D2 in series and used for controlling the on-off of the photoelectric acquisition circuit and carrying out anti-interference treatment on the photoelectric acquisition circuit;
the relay K3 is connected with the diode D3 in series and used for controlling the on-off of the Bluetooth acquisition circuit and carrying out anti-interference processing on the Bluetooth acquisition circuit;
the floating resistor R1 is arranged on a common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit and is used for avoiding interference of floating signals on the circuits;
the floating resistor R1 is connected in series with a high-voltage prevention module;
the high-voltage prevention module is provided with a high-voltage resistant diode and is used for avoiding damage caused by circuit short circuit.
When the electric energy pulse is acquired through the auxiliary needle port, the error detector sends a switching command to control the three relays, the relay K1 is kept closed, and the relay K2 and the relay K3 are disconnected;
when the electric energy pulse is collected through the Bluetooth port, the error detector sends a switching instruction to control the three relays, the relay K2 is kept closed, and the relay K1 and the relay K3 are disconnected;
when the photoelectric acquisition port is used for acquiring the electric energy pulse, the error detector sends a switching instruction to control the three relays, the relay K3 is kept closed, and the relay K1 and the relay K2 are disconnected, namely, the other two circuits are disconnected when one circuit is closed.
The pulse after the acquisition circuit firstly passes through the high-voltage prevention module and then enters the interior of the error detector, so that the high voltage caused by miswiring or other short circuits is prevented from damaging error detection components.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectricity acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the quilt survey electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees simultaneously that other two way detection circuitry break off, can be applicable to various electric energy meters, and the scheme is simple, and is practical, convenient to popularize and use, and user experience is good.
Furthermore, the utility model discloses can compatible traditional electric energy meter pulse detection, the programme-controlled mode of accessible switches, has effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, has avoided the danger that the wiring is improper to be brought.
As shown in fig. 2, the present invention provides a specific embodiment of an error detection apparatus:
an error detection device for checking an electric energy meter,
the method comprises the following steps: the error detector is used for checking the electric energy meter;
the alternating current power supply module is used for increasing voltage and current of the electric energy meter to be tested, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current power supply;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing a standard metering pulse as a metering standard of active error detection;
the clock instrument is used for providing standard clock pulses as a metering standard for detecting in diary time;
the measuring standard module is connected with the error detector in a wire arrangement mode;
the error detector is provided with a one-out-of-three circuit switching module and an error calculating module, is used as a module for measuring the performance of the measured electric energy meter, and can selectively receive the pulses of the measured electric energy meter output by the auxiliary needle, the Bluetooth converter and the photoelectric collector, different detection circuits are kept closed according to different detection requirements, and other two detection circuits are simultaneously ensured to be disconnected.
The three-out-of-one circuit switching module corresponds to three different pulse acquisition modes respectively and is an auxiliary needle acquisition circuit, a Bluetooth acquisition circuit and a photoelectric acquisition circuit respectively.
In the actual test process, one circuit is selected to be normally connected, and the other acquisition circuits are disconnected. The utility model discloses error detection appearance increases a set of switching command, uses the same order word, during normal use, generally is 2009 edition, 2013 edition, 2020 version electric energy meter's detection, gather the electric energy meter pulse through the auxiliary needle, the PC switches to auxiliary needle circuit or photoelectricity collection circuit according to electric energy meter type control circuit switching control module, when needs detect intelligent thing allies oneself with the electric energy meter, PC control error detector circuit switching control module switches to bluetooth collection circuit. The rear end of the one-out-of-three circuit switching module is connected with the high-voltage shaping prevention circuit, so that the safe use of the whole error checker is ensured.
The utility model discloses through constantly exploring and experimental, set up mutually independent auxiliary needle acquisition circuit, photoelectricity acquisition circuit, bluetooth acquisition circuit, can carry out selective receipt to the quilt survey electric energy meter pulse of auxiliary needle, bluetooth converter, photoelectric collection ware output, different detection requires to keep different detection circuitry closed, guarantees simultaneously that other two way detection circuitry break off, can be applicable to various electric energy meters, and the scheme is simple, and is practical, convenient to popularize and use, and user experience is good.
Furthermore, the utility model discloses can compatible traditional electric energy meter pulse detection, the programme-controlled mode of accessible switches, has effectively avoided the manual line change of traditional calibrating installation to carry out the loaded down with trivial details operation of testing, has avoided the danger that the wiring is improper to be brought.
Further, the utility model discloses can receive the pulse of measurement standard output, confirm the relative error who is examined intelligent ammeter with the pulse control measurement standard count of examining intelligent ammeter output.
The utility model relates to a theory of operation:
when the electric energy pulse is collected through the auxiliary needle port, the error detector sends a switching command to control the three relays, the relay K1 is kept closed, and the relay K2 and the relay K3 are disconnected; when the electric energy pulse is collected through the Bluetooth port, the error detector sends a switching instruction to control the three relays, the relay K2 is kept closed, and the relay K1 and the relay K3 are disconnected; when the photoelectric acquisition port is used for acquiring the electric energy pulse, the error detector sends a switching instruction to control the three relays, the relay K3 is kept closed, and the relay K1 and the relay K2 are disconnected, namely, the other two circuits are disconnected when one circuit is closed. When the circuit is switched to the auxiliary needle pulse, a section of conducting wire, namely, the left line surrounding the circuit in fig. 2, is inevitably generated. In this case, the section of the wire can bring interference of floating level to the pulse acquisition signal of the auxiliary needle. Therefore, a 10K omega resistor R1 is pulled down at the common point Y1, interference of floating signals is avoided, and three diodes D1, D2 and D3 are added to each branch line respectively to perform further anti-interference processing.
The pulse firstly passes through the high-voltage prevention module and then enters the error detector after the circuit is acquired, and when the condition of short circuit between a pulse terminal and a device power supply occurs by mistake or carelessly, a pulse signal can reach 220V, so that the error calculation module is damaged. Two high-voltage-resistant diodes D4 and D5 are additionally arranged on the primary side of the optical coupler V1, when a pulse signal is low, the D4 is conducted, when the pulse signal is high, the V1 and the D5 are conducted, and at the moment, as long as the pulse signal level is lower than the reverse conducting voltage of the D4 diode, the D4 can protect a rear circuit from being damaged, so that the damage of high voltage to an error detector caused by miswiring or other short circuits is avoided.
After the detection state is determined, the error detector controls the metering standard counting by using the pulse output by the detected intelligent electric energy meter to determine the relative error of the detected intelligent electric energy meter, wherein the relative error gamma is calculated by the following formula:
wherein m is 0 And m is the actually measured pulse number for the calculated or preset pulse number, so that the error calculation of the electric energy meter is realized.
As shown in fig. 3, use the utility model discloses an embodiment of testing is carried out to intelligence thing antithetical couplet electric energy meter:
the method for testing the intelligent Internet of things electric energy meter specifically comprises the following steps:
in the first step, a current power supply provides voltage and current for the intelligent Internet of things electric energy meter, and the working conditions of the intelligent Internet of things electric energy meter are met.
And secondly, configuring a Bluetooth pulse converter through RS485, and binding the Bluetooth pulse converter and the intelligent Internet of things electric energy meter by using a mac address to establish connection.
And thirdly, setting the Bluetooth pulse converter into a verification mode after the communication of the Bluetooth pulse converter is finished.
And fourthly, the Bluetooth pulse converter converts the pulses of the electric energy meter into electric pulses through Bluetooth communication and outputs the electric pulses.
And fifthly, the PC sends a circuit selection command to the error detector according to the type of the electric energy meter (intelligent Internet of things electric energy meter), switches the pulse acquisition circuit to the Bluetooth acquisition circuit according to different definitions of the sent command words, and simultaneously disconnects the auxiliary needle acquisition circuit and the photoelectric acquisition circuit to ensure that the test instrument is not influenced by other two paths of pulses in the test process.
And sixthly, comparing the electric energy pulse of the intelligent Internet of things electric energy meter with the metering standard electric energy pulse by using an error detector to obtain an electric energy error, and judging whether the intelligent Internet of things electric energy meter meets the corresponding grade requirement or not.
Use the utility model discloses carry out an embodiment of testing to intelligent ammeter:
the method for testing the intelligent electric energy meter of 2009 edition, 2013 edition and 2020 edition comprises the following steps of:
in the first step, a current power supply provides voltage and current for the electric energy meter to meet the working conditions of the electric energy meter.
And secondly, the PC sends a circuit selection command to the error detector according to the type of the electric energy meter (2009 version, 2013 version and 2020 version intelligent electric energy meter), switches the pulse acquisition circuit to an auxiliary needle circuit or a photoelectric acquisition circuit according to different definitions of a sending command word, and simultaneously disconnects other two circuits to ensure that the pulse acquisition circuit is not influenced by other two pulses in the test process.
And thirdly, comparing the electric energy pulse of the intelligent Internet of things electric energy meter with the metering standard electric energy pulse by using an error detector to obtain an electric energy error, and judging whether the intelligent Internet of things electric energy meter meets the corresponding grade requirement or not.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (10)
1. A pulse acquisition module for electric energy meter calibration is characterized in that,
the pulse sampling device is provided with at least three independent pulse acquisition circuits for sampling pulses of various electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit and a Bluetooth acquisition circuit;
the auxiliary needle acquisition circuit is used for receiving electric energy meter pulses output by the auxiliary needle;
the photoelectric acquisition circuit is used for receiving the electric energy meter pulse output by the photoelectric acquisition device
The Bluetooth acquisition circuit is used for receiving the electric energy meter pulse output by the Bluetooth converter;
according to the type of the electric energy meter, one of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit is kept closed, and the rest of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are kept open.
2. The pulse acquisition module for electric energy meter verification according to claim 1,
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay is connected with the diode in series;
the relay is used for controlling the on-off of the circuit;
and the diode is used for anti-interference processing of the circuit.
3. The pulse acquisition module for electric energy meter verification according to claim 1,
a floating resistor R1 is electrically connected on the common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit,
the resistance value of the floating resistor R1 is 10K omega, and the floating resistor R1 is used for avoiding the interference of floating signals.
4. The pulse acquisition module for electric energy meter verification according to claim 3,
the floating resistor R1 is connected in series with a high-voltage prevention module,
the high-voltage prevention module is used for avoiding damage caused by short circuit of the circuit.
5. The pulse acquisition module for electric energy meter verification according to claim 4,
the high-voltage prevention module comprises an optocoupler V1, a high-voltage resistant diode D4 and a high-voltage resistant diode D5;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are assembled on the primary side of the optical coupler V1;
the high-voltage resistant diode D4 and the high-voltage resistant diode D5 are connected in parallel.
6. An error detector for checking an electric energy meter is characterized in that,
comprising a pulse acquisition module for electric energy meter verification, an error calculation module according to any one of claims 1-5,
and the error calculation module is used for determining the relative error of the detected electric energy meter by controlling the metering standard counting through the pulse output by the detected electric energy meter.
7. The error detector for electric energy meter verification of claim 6,
the pulse acquisition module is electrically connected with a circuit switching control module and a pulse receiving module;
the circuit switching control module is used for receiving a PC end or user operation instruction and controlling the action of the relay;
and the pulse receiving module is used for receiving the pulse output by the electric energy meter.
8. The error detector for electric energy meter verification of claim 7,
further comprising: the device comprises an alternating current power supply module and a metering standard module;
the alternating current power supply module is used for increasing voltage and current for the electric energy meter, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current source;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing a standard metering pulse as a metering standard of active error detection;
and the clock instrument is used for providing standard clock pulses as a metering standard for detecting the time.
9. An error detector for checking an electric energy meter is characterized in that,
the device is provided with at least three independent pulse acquisition circuits for measuring the performance of various electric energy meters, and comprises an auxiliary needle acquisition circuit, a photoelectric acquisition circuit, a Bluetooth acquisition circuit, a floating resistor R1 and an anti-high voltage module;
the auxiliary needle acquisition circuit is provided with a relay K1 and a diode D1 and is used for receiving electric energy meter pulses output by the auxiliary needle;
the photoelectric acquisition circuit is provided with a relay K2 and a diode D2 and is used for receiving electric energy meter pulses output by the photoelectric acquisition device
The Bluetooth acquisition circuit is provided with a relay K3 and a diode D3 and is used for receiving electric energy meter pulses output by the Bluetooth converter;
the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit are respectively provided with a relay and a diode;
the relay K1 is connected with the diode D1 in series and is used for controlling the on-off of the auxiliary needle acquisition circuit and carrying out anti-interference processing on the auxiliary needle acquisition circuit;
the relay K2 is connected with the diode D2 in series and used for controlling the on-off of the photoelectric acquisition circuit and carrying out anti-interference treatment on the photoelectric acquisition circuit;
the relay K3 is connected with the diode D3 in series and used for controlling the on-off of the Bluetooth acquisition circuit and carrying out anti-interference processing on the Bluetooth acquisition circuit;
the floating resistor R1 is arranged on a common branch of the auxiliary needle acquisition circuit, the photoelectric acquisition circuit and the Bluetooth acquisition circuit and is used for avoiding interference of floating signals on the circuits;
the floating resistor R1 is connected in series with a high-voltage prevention module;
the high-voltage prevention module is provided with a high-voltage resistant diode and is used for avoiding damage caused by short circuit of a circuit;
when the electric energy pulse is collected through the auxiliary needle port, the error detector sends a switching command to control the three relays, the relay K1 is kept closed, and the relay K2 and the relay K3 are disconnected;
when the electric energy pulse is collected through the Bluetooth port, the error detector sends a switching instruction to control the three relays, the relay K2 is kept closed, and the relay K1 and the relay K3 are disconnected;
when the photoelectric acquisition port is used for acquiring electric energy pulses, the error detector sends a switching instruction to control the three relays, the relay K3 is kept closed, and the relay K1 and the relay K2 are disconnected, namely, the other two circuits are disconnected when one circuit is closed;
the pulse after the acquisition circuit firstly passes through the high-voltage prevention module and then enters the interior of the error detector, so that the high voltage caused by miswiring or other short circuits is prevented from damaging error detection components.
10. An error detection device for checking an electric energy meter is characterized in that,
the method comprises the following steps: the error detector for checking the electric energy meter comprises an alternating current power supply module, a metering standard module and the error detector for checking the electric energy meter according to any one of claims 6, 7 and 9;
the alternating current power supply module is used for increasing voltage and current for the electric energy meter, can apply 0-120% of electric quantity to the electric energy meter according to test regulations, and comprises a signal generating source, an alternating current voltage source and an alternating current source;
the metering standard module comprises a standard meter and a clock instrument;
the standard meter is used for providing a standard metering pulse as a metering standard of active error detection;
the clock instrument is used for providing standard clock pulses as a metering standard for diary time detection;
the measuring standard module is connected with the error detector in a wire arrangement mode;
the error detector is provided with an error calculation module which is used as a module for measuring the performance of the electric energy meter and can selectively receive the electric energy meter pulses output by the auxiliary needle, the Bluetooth converter and the photoelectric collector, different detection circuits are kept closed according to different detection requirements, and other two paths of detection circuits are simultaneously ensured to be disconnected.
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|---|---|---|---|
| CN202123030588.XU CN217360278U (en) | 2021-12-02 | 2021-12-02 | Pulse acquisition module for electric energy meter calibration, error detector and error detection device |
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|---|---|---|---|
| CN202123030588.XU CN217360278U (en) | 2021-12-02 | 2021-12-02 | Pulse acquisition module for electric energy meter calibration, error detector and error detection device |
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| CN217360278U true CN217360278U (en) | 2022-09-02 |
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