CN114994586B - Device and method for checking and verifying storage battery polling instrument - Google Patents
Device and method for checking and verifying storage battery polling instrument Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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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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Abstract
A storage battery inspection instrument inspection and verification device and a method thereof comprise a power supply unit, a storage battery simulator unit, a central control module and a man-machine interaction platform, wherein the principle of realization is that the inspection instrument inspection device is connected with an inspection instrument, the inspection instrument inspection device provides a working power supply for the inspection instrument inspection device and tests a storage battery object, the inspection instrument inspection device sets the storage battery simulator unit into an inspected object with different voltage grade voltages and internal resistance parameters, the inspection instrument inspection device and the inspection instrument read a data acquisition result of the inspection instrument through RS485 communication, and the inspection instrument inspection device receives the data acquisition result of the inspection instrument and carries out automatic comparison and verification with a real-time analog voltage and an analog resistance value of the storage battery simulator unit so as to improve the online detection and management level of a storage battery of a power supply system and improve the validity and judgment accuracy of the storage battery inspection instrument.
Description
Technical Field
The invention relates to the technical field of power grid detection, in particular to a device and a method for checking and verifying a storage battery patrol instrument.
Background
With the rapid development of intellectualization and informatization of power equipment, the requirement for power supply reliability is higher and higher, especially the requirement for reliability of a storage battery in a large number of applications of the storage battery as a backup power supply is not neglected, the judgment of the health state of the storage battery requires to be accurate, and no erroneous judgment and no judgment omission occur.
The storage battery is used as an indispensable standby power supply in an electric power safety production place, the use is wide, whether the data acquired by the storage battery inspection instrument is accurate or not is critical to the safety production effect and the power supply reliability, the storage battery inspection instrument is a device for carrying out online detection and management on the storage battery of a power supply system, the monitoring management on different quantities of single storage batteries can be completed, the judgment on the health state of the monitored storage battery is required to be accurate, misjudgment and missed judgment in application, in the actual production process, the storage battery inspection instrument is used as common storage battery health state monitoring equipment in the application of the existing systems such as UPS, EPS, direct current power supply, communication power supply and the like, and the acquired data are often inaccurate along with the increase of application time, so that the false alarm or the missed judgment is caused.
Disclosure of Invention
Aiming at the technical problems, the invention provides a device and a method for checking and verifying a storage battery polling instrument, which are suitable for the occasions of receiving check, periodic check and acceptance check of common storage battery health state monitoring equipment in the system application of UPS, EPS, DC power supply, communication power supply and the like, so as to improve the online detection and management level of the storage battery of the power supply system and the validity and judgment accuracy of the storage battery polling instrument.
The invention provides a checking and verifying device of a storage battery polling instrument, which at least comprises: the system comprises a power supply unit, a storage battery simulator unit and a central control module; wherein,
the storage battery simulator unit simulates the state characteristics of the storage battery monomer according to the storage battery parameters set by the central control module and tests the storage battery monomer through target patrol instrument equipment;
the central control module acquires a test result of the target inspection instrument, verifies the test result, judges whether the detection data of the target inspection instrument is accurate, and if so, completes verification, otherwise, the target inspection instrument fails to verify;
the power supply unit is used for providing an analog power supply and the device working power supply.
Wherein, the battery simulator unit further comprises:
the excitation voltage generator is connected with the power supply unit and is respectively connected with the resistance unit, the sample storage battery and the multi-channel analog circuit through the driving interface;
the resistance unit controls the magnitude of the analog resistance value of the resistance unit through a multi-way switch; the resistance unit is connected with one end of the multi-channel analog circuit after being connected with the sample storage battery in series, and the other end of the multi-channel analog circuit is used for being connected into the target patrol inspection instrument.
Further, after the target patrol instrument is connected to the multi-channel analog circuit, the read voltage value and the current value are sent to the central control module.
Wherein, the central control module further comprises: a power supply control port, a power supply detection unit, a communication unit and a storage battery simulator control interface which are respectively connected with the CPU control chip,
the power supply control port is used for controlling the power supply unit to supply power and monitoring the working state of the power supply control in real time through the power supply detection unit;
the communication unit is used for communicating with the target inspection instrument and reading the detection data of the target inspection instrument end;
the storage battery simulator control interface is used for setting the value of the resistance unit according to the instruction of the CPU control chip;
and the CPU control chip calculates a simulation resistance value according to the detection data and compares the simulation resistance value with the resistance value set by the storage battery simulator unit, if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, the target inspection instrument is accurately inspected, and otherwise, the target inspection instrument is erroneously inspected.
Wherein, the central control module further comprises: a human-computer interaction port connected with the CPU control chip, a digital clock unit, a reset and crystal oscillation unit and a data storage circuit, wherein,
the human-computer interaction port is used for connecting the upper computer to realize the control and data transmission of the device;
the digital clock unit is used for identifying time nodes of operation and failure;
the data storage circuit is connected with the CPU control chip in an I2C mode and used for storing preset inspection parameters, inspection time and inspection result data.
Further, the power supply unit further includes:
the power supply battery is connected with an external power supply end through a charging circuit, and the DC-DC bidirectional converter circuit and the DC-DC buck converter circuit are respectively connected with the power supply battery;
the DC-DC bidirectional converter circuit is used for providing analog voltage required by the storage battery simulator unit;
the DC-DC voltage reduction and conversion circuit is used for providing a target patrol instrument, the internal logic circuits of the storage battery simulator unit and the central control module and controlling the driving circuit to normally work, and the output voltage is 5V or 3.3V.
The invention further provides a method for checking and verifying the storage battery polling instrument, which comprises the following steps:
s1: setting storage battery parameters for a storage battery simulator unit, wherein the storage battery parameters are obtained by simulating the resistance value to be simulated of a storage battery monomer through a sample storage battery and a resistance unit;
s2: connecting the battery simulator unit to a target patrol instrument;
s3: the central control module controls the power supply unit to provide test voltage;
s4: and the central control module acquires a test result of the target inspection instrument, verifies the test result, judges whether the detection data of the target inspection instrument is accurate or not, and if so, completes verification, otherwise, the target inspection instrument fails to verify.
Wherein, S1, still includes:
judging whether the sample storage battery is consistent with the resistance value to be simulated or not, and if so, simulating by using the sample storage battery; otherwise, the resistance unit is regulated and controlled through the multi-way switch to obtain the analog resistance value.
The S3 further comprises:
the power supply control interface is used for controlling a power supply unit to supply power, and the power supply detection unit is used for monitoring the working state of the power supply control in real time; the power supply unit comprises a power supply battery connected with an external power supply end through a charging circuit, and a DC-DC bidirectional converter circuit and a DC-DC step-down converter circuit which are respectively connected with the power supply battery; the DC-DC bidirectional converter circuit is used for providing an analog voltage required by the storage battery simulator unit; the DC-DC voltage reduction and conversion circuit is used for providing the normal work of an internal logic circuit and a control driving circuit of the target patrol instrument, the storage battery simulator unit and the central control module.
The S4 further includes:
and acquiring detection data of the target inspection instrument end, calculating a simulation resistance value, comparing the simulation resistance value with the resistance value set by the storage battery simulator unit, and if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, accurately inspecting the target inspection instrument, otherwise, erroneously inspecting the target inspection instrument.
In summary, the invention provides a device and a method for verifying a storage battery polling instrument, which comprises a power supply unit, a storage battery simulator unit, a central control module and a man-machine interaction platform, and the principle is realized by connecting a polling instrument verifying device with a polling instrument to be verified, providing a working power supply for the polling instrument verifying device and testing a storage battery object, setting the storage battery simulator unit into objects to be polled with different voltage levels and internal resistance parameters by the polling instrument verifying device, connecting the objects to be polled with a data acquisition channel (generally 30 acquisition points) of the polling instrument, reading a data acquisition result of the polling instrument by RS485 communication between the polling instrument verifying device and the polling instrument after the polling instrument starts, automatically comparing and verifying the data acquisition result of the polling instrument with a real-time analog voltage and an analog resistance value of the storage battery simulator unit by the polling instrument verifying device, and outputting the channel number, parameter type, absolute deviation and error judgment result to a display screen of the man-machine interaction unit for display, and synchronously storing the channel number, the parameter type, the absolute deviation and the error judgment result in a storage unit of the central control module.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure.
Fig. 1 is a schematic diagram of a checking and verifying device of a storage battery polling instrument.
Fig. 2 is a schematic diagram of a battery simulator unit according to the present invention.
Fig. 3 is a schematic diagram of the central control module according to the present invention.
Fig. 4 is a schematic diagram of the power supply unit according to the present invention.
Fig. 5 is a flow chart of the battery inspection tour instrument checking and verifying method of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the inspection and verification device for the battery inspection tour instrument is suitable for the occasions of receiving inspection, periodic inspection and acceptance inspection of common battery health state monitoring equipment in the system applications of UPS, EPS, dc power supply, communication power supply and the like.
The device of the invention provides a working power supply for the device and tests the storage battery object by connecting the inspection instrument inspection device with the inspection instrument to be inspected, the inspection instrument inspection device sets the storage battery simulator unit into the inspected object with different voltage grade voltages and internal resistance parameters, and the inspected object is connected with a data acquisition channel (generally 30 acquisition points) of the inspection instrument, after the inspection instrument starts, the data acquisition result of the inspection instrument is read by the communication between the inspection instrument inspection device and the inspection instrument through RS485, the inspection instrument inspection device receives the data acquisition result of the inspection instrument and the real-time analog voltage and analog resistance value of the storage battery simulator unit to carry out automatic comparison and verification, and finally, the channel number, parameter types, absolute deviation and error judgment results are output to a display screen of a man-machine interaction unit to be displayed and are synchronously stored in a storage unit of a central control module.
The device of the invention at least comprises: the system comprises a power supply unit, a storage battery simulator unit and a central control module; wherein,
and the storage battery simulator unit simulates the state characteristics of the storage battery monomer according to the storage battery parameters set by the central control module and tests the storage battery monomer through target patrol instrument equipment.
The central control module acquires the test result of the target inspection instrument, verifies the test result, judges whether the detection data of the target inspection instrument is accurate or not, completes verification if the detection data of the target inspection instrument is accurate, and otherwise, does not pass the verification of the target inspection instrument.
The power supply unit is used for providing an analog power supply and the device working power supply.
Wherein, the battery simulator unit further includes:
the excitation voltage generator is connected with the power supply unit and is respectively connected with the resistance unit, the sample storage battery and the multi-channel analog circuit through the driving interface; the excitation voltage generator is composed of a programmable power supply and can provide 0-12V of continuously adjustable voltage, floating charging of the storage battery and supplement of voltage and energy of a storage battery sample are achieved, and the excitation voltage generator is used for simulating an online operation environment of the storage battery and verifying a voltage testing function of a target polling instrument.
The resistance unit controls the magnitude of the analog resistance value of the resistance unit through a multi-way switch; the resistance unit is connected with one end of the multi-channel analog circuit after being connected with the sample storage battery in series, and the other end of the multi-channel analog circuit is used for being connected into the target inspection instrument.
In another embodiment, as shown in fig. 2, the battery simulator unit is configured to simulate the voltage, internal resistance, and temperature characteristics of the battery cells, so as to implement on-site battery simulation on the checked battery inspector. The device comprises a sample storage battery, a resistance simulator, an excitation voltage generator and a multi-channel simulation circuit, wherein the sample storage battery is a field-applied storage battery sample with the same type and different capacities, can be charged by the device and can also be quickly connected and replaced; the resistance simulator is a resistance array formed by an adjustable stepping resistor and a control switching circuit, can provide a typical standard resistance value in the range of 0-999m omega, and is used for checking and verifying the internal resistance test function of the target routing inspection instrument; the excitation voltage generator is composed of a programmable power supply and can provide 0-12V of continuously adjustable voltage, so that the floating charging of the storage battery and the supplement of the voltage and energy of a storage battery sample are realized, the excitation voltage generator is used for simulating the online operating environment of the storage battery and is used for verifying the voltage test function of the target polling instrument; the multi-channel analog circuit realizes the analog of multi-channel voltage in a mode of converting 1 to more so as to verify the multi-channel voltage test function of the target inspection tour instrument.
And after the target inspection instrument is connected to the multi-channel analog circuit, the read voltage value and current value are sent to the central control module. The multi-channel analog circuit realizes the analog of multi-channel voltage in a mode of converting 1 to more so as to verify the multi-channel voltage test function of the target inspection tour instrument. Preferably, the target patrol instrument at least comprises a plurality of data collectors and a plurality of inspection interfaces correspondingly connected with the data collectors, the inspection interfaces are connected to a multi-channel outlet of the multi-channel analog circuit end, after the power supply unit starts to supply power, the target patrol instrument starts to read inspection data, detection data of each data collector are respectively obtained and sent to the central control module, and the central control module respectively verifies the detection data of each data collector to ensure that the detection function of the target patrol instrument is normal. Preferably, the data collector at least comprises a plurality of smart meters, a temperature sensor, a humidity sensor, a current measuring instrument and the like, but is not limited thereto.
Preferably, the central control module further includes: power control mouth, power detecting element, communication unit and battery simulator control interface that are connected with CPU control chip respectively, wherein:
the power supply control port is used for controlling the power supply unit to supply power and monitoring the working state of the power supply control in real time through the power supply detection unit.
And the communication unit is used for communicating with the target inspection instrument and reading the detection data of the target inspection instrument.
And the storage battery simulator control interface is used for setting the value of the resistance unit according to the instruction of the CPU control chip.
And the CPU control chip calculates a simulation resistance value according to the detected voltage and current values of the target inspection instrument, compares the simulation resistance value with the resistance value set by the storage battery simulator unit, and if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, the target inspection instrument is accurately inspected, otherwise, the target inspection instrument is erroneously inspected.
In another embodiment, as shown in fig. 3, the central control module is a core unit combining software and hardware, and includes a CPU control chip, a reset and crystal oscillator circuit, a data storage circuit, a clock circuit, a communication interface, a storage battery simulator control interface, and a human-computer interaction unit interface, where the CPU control chip implements data analysis and storage, logic control management, information interaction management, control and management of the storage battery simulator unit, operation and judgment of a test result, and management and output of human-computer interaction information; the reset and crystal oscillator unit is adopted by the CPU control chip and provides a basic clock pulse signal necessary for the work of the CPU control chip; the data storage circuit is connected with the CPU control chip in an I2C mode and is used for storing preset inspection parameters, inspection time, inspection channel data and inspection result data; the clock circuit and the CPU control chip provide year, month and day clock signals for the device so as to accurately identify time nodes of operation and faults; the communication interface is designed by amplifying, isolating and converting TTL (transistor-transistor logic) receiving and transmitting signals into 485 signals for output, and the central control module belongs to downlink communication data transmission between the upper computer and the inspection instrument in a communication structure; the storage battery simulator control interface is used for connecting the storage battery simulator with the CPU control chip, and is provided with an up-and-down pull resistor, a switch driving circuit and a connector interface; the human-computer interaction unit interface is used for connection with a human-computer interaction platform and information transmission and is designed into a connector module mode so as to facilitate quick connection and expansion.
As shown in fig. 4, the power supply unit of the present invention is used for supplying the working power to the internal circuit of the battery inspector inspection and verification device, ensuring stable and reliable operation thereof, and is suitable for two types of portable battery power supply and mains power supply,
the method specifically comprises the following steps:
the power supply battery is connected with an external power supply end through a charging circuit, and the DC-DC bidirectional converter circuit and the DC-DC buck converter circuit are respectively connected with the power supply battery.
The DC-DC bidirectional converter circuit is used for providing analog voltage required by the storage battery simulator unit.
The DC-DC voltage reduction and conversion circuit is used for providing a target patrol inspection instrument, the internal logic circuits of the storage battery simulator unit and the central control module and the control driving circuit work normally, and the output voltage is 5V or 3.3V.
As another preferred embodiment, the invention further provides a method for verifying the battery inspector, which is shown in fig. 5, and includes the following steps:
s1: and setting storage battery parameters for the storage battery simulator unit, wherein the storage battery parameters are used for simulating the resistance value to be simulated of the storage battery monomer through the sample storage battery and the resistance unit.
The resistance simulator is a resistance array formed by an adjustable stepping resistor and a control switching circuit, can provide a typical standard resistance value in the range of 0-999m omega, and is used for verifying and verifying the internal resistance test function of the target routing inspection instrument.
Wherein, S1, still include: judging whether the sample storage battery is consistent with the resistance value to be simulated or not, and if so, simulating by using the sample storage battery; otherwise, the resistance unit is regulated and controlled through the multi-way switch to obtain the analog resistance value.
S2: and connecting the storage battery simulator unit to a target patrol inspection instrument.
S3: the central control module controls the power supply unit to provide the test voltage.
S4: the central control module acquires the test result of the target inspection instrument, verifies the test result, judges whether the detection data of the target inspection instrument are accurate or not, and if the detection data are accurate, completes verification, otherwise, the target inspection instrument fails to verify.
The step S3 further includes: the power supply control interface is used for controlling a power supply unit to supply power, and the power supply detection unit is used for monitoring the working state of the power supply control in real time; the power supply unit comprises a power supply battery connected with an external power supply end through a charging circuit, and a DC-DC bidirectional converter circuit and a DC-DC step-down converter circuit which are respectively connected with the power supply battery; the DC-DC bidirectional converter circuit is used for providing analog voltage required by the storage battery simulator unit; the DC-DC voltage reduction and conversion circuit is used for providing the normal work of an internal logic circuit and a control driving circuit of the target patrol instrument, the storage battery simulator unit and the central control module.
The step S4 further includes: and acquiring detection data of the target inspection instrument end, calculating a simulation resistance value, comparing the simulation resistance value with the resistance value set by the storage battery simulator unit, and if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, accurately inspecting the target inspection instrument, otherwise, erroneously inspecting the target inspection instrument.
Preferably, the device of the invention also comprises a human-computer interaction unit which comprises a display unit, an operation unit and a signal indication unit, and the design of the liquid crystal display screen, the light touch key and the LED signal lamp is adopted to realize the functions of the real-time information display unit, the parameter setting, the function operation of manual participation thereof, the information query and the LED signal indication in the inspection process.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (7)
1. The utility model provides a battery patrols and examines appearance inspection verifying attachment which characterized in that includes at least: the system comprises a power supply unit, a storage battery simulator unit and a central control module; wherein,
the battery simulator unit includes: the excitation voltage generator is connected with the power supply unit and is respectively connected with the resistance unit, the sample storage battery and the multi-channel analog circuit through the driving interface; the device is used for simulating the voltage, internal resistance and temperature characteristics of the storage battery monomer to realize on-site storage battery simulation on the checked storage battery polling instrument; simulating the state characteristics of the single storage battery according to the storage battery parameters set by the central control module, and testing through a target patrol instrument;
wherein, the excitation voltage generator is composed of a programmable power supply and can provide a continuously adjustable voltage of 0-12V; after the target inspection instrument is connected to the multi-channel analog circuit, the read voltage value and current value are sent to the central control module;
the central control module comprises: the power supply control port, the power supply detection unit, the communication unit, the storage battery simulator control interface, the human-computer interaction port, the digital clock unit, the reset and crystal oscillator unit and the data storage circuit are respectively connected with the CPU control chip; obtaining a test result of the target inspection instrument, verifying, judging whether the detection data of the target inspection instrument is accurate or not, if so, finishing verification, otherwise, failing to verify the target inspection instrument;
the power supply unit is used for providing an analog power supply and the device working power supply.
2. The battery inspector verification apparatus according to claim 1,
the resistance unit controls the magnitude of the analog resistance value of the resistance unit through a multi-way switch; the resistance unit is connected with one end of the multi-channel analog circuit after being connected with the sample storage battery in series, and the other end of the multi-channel analog circuit is used for being connected into the target patrol inspection instrument.
3. The battery inspector verification apparatus according to claim 2,
the power supply control port is used for controlling the power supply unit to supply power and monitoring the working state of the power supply control in real time through the power supply detection unit;
the communication unit is used for communicating with the target inspection instrument and reading the detection data of the target inspection instrument end; the storage battery simulator control interface is used for setting the value of the resistance unit according to the instruction of the CPU control chip;
and the CPU control chip calculates the simulation resistance value of the target inspection instrument according to the detection data, compares the simulation resistance value with the resistance value set by the storage battery simulator unit, and if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, the target inspection instrument is accurately inspected, otherwise, the target inspection instrument is erroneously inspected.
4. The battery inspector verification apparatus according to claim 3,
the human-computer interaction port is used for connecting an upper computer to realize the control and data transmission of the device;
the digital clock unit is used for identifying time nodes of operation and failure;
the data storage circuit is connected with the CPU control chip in an I2C mode and used for storing preset inspection parameters, inspection time and inspection result data.
5. The battery inspector verification apparatus according to claim 4, wherein said power supply unit further comprises:
the charging circuit comprises a power supply battery connected with an external power supply end through the charging circuit, and a DC-DC bidirectional converter circuit and a DC-DC buck converter circuit which are respectively connected with the power supply battery;
the DC-DC bidirectional converter circuit is used for providing analog voltage required by the storage battery simulator unit;
the DC-DC voltage reduction and conversion circuit is used for providing a target patrol instrument, the internal logic circuits of the storage battery simulator unit and the central control module and controlling the driving circuit to normally work, and the output voltage is 5V or 3.3V.
6. A method for checking and verifying a storage battery polling instrument is characterized by comprising the following steps:
s1: setting storage battery parameters for a storage battery simulator unit, wherein the storage battery parameters are obtained by simulating the resistance value to be simulated of a storage battery monomer through a sample storage battery and a resistance unit;
judging whether the sample storage battery is consistent with the resistance value to be simulated or not, and if so, simulating by using the sample storage battery; otherwise, regulating and controlling the resistance unit through a multi-way switch to obtain a simulation resistance value;
s2: connecting the battery simulator unit to a target patrol instrument; the inspection device of the inspection instrument sets the storage battery simulator unit into an inspected object with different voltage grade voltages and internal resistance parameters, and is connected with a data acquisition channel of a target inspection instrument, after the target inspection instrument starts to work, a data acquisition result of the target inspection instrument is read by the inspection device of the inspection instrument and the target inspection instrument through RS485 communication, the inspection instrument inspection device receives the data acquisition result of the target inspection instrument and the real-time analog voltage and analog resistance value of the storage battery simulator unit to perform automatic comparison and verification, and finally, a channel number, a parameter type, an absolute deviation and an error judgment result are output to a display screen of a man-machine interaction unit to be displayed and synchronously stored in a storage unit of a central control module;
s3: the central control module controls the power supply unit to provide test voltage;
the power supply control interface is used for controlling a power supply unit to supply power, and the power supply detection unit is used for monitoring the working state of the power supply control in real time;
the power supply unit comprises a power supply battery connected with an external power supply end through a charging circuit, and a DC-DC bidirectional converter circuit and a DC-DC step-down converter circuit which are respectively connected with the power supply battery; the output voltage of the DC-DC buck conversion circuit is 5V or 3.3V;
s4: and the central control module acquires the test result of the target inspection instrument, calculates the simulation resistance value of the target inspection instrument, compares the simulation resistance value with the resistance value set by the storage battery simulator unit, and if the simulation resistance value is consistent with the resistance value set by the storage battery simulator unit, the target inspection instrument is accurately inspected, otherwise, the target inspection instrument is erroneously inspected.
7. The battery inspector verification method according to claim 6,
the DC-DC bidirectional converter circuit is used for providing analog voltage required by the storage battery simulator unit; the DC-DC voltage reduction and conversion circuit is used for providing the normal work of internal logic circuits and control driving circuits of the target patrol instrument, the storage battery simulator unit and the central control module.
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