CN115598445A

CN115598445A - Electrical fault detection method and device based on hardware-in-the-loop

Info

Publication number: CN115598445A
Application number: CN202211306690.4A
Authority: CN
Inventors: 纪鹏飞; 魏新元; 胡旭钢; 王蔚霖; 姜娜
Original assignee: Zhejiang Yuchendong Intelligent Technology Co ltd
Current assignee: Zhejiang Yuchendong Intelligent Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-13
Anticipated expiration: 2042-10-25
Also published as: CN115598445B

Abstract

The application discloses a hardware-in-the-loop-based electrical fault detection method and device, wherein the method comprises the following steps: when the detection type of the object to be detected is determined to be input current, connecting an analog current input unit with the object to be detected; generating a first target current value in a preset current interval, and transmitting the first target current value to a measured object based on a communication unit; acquiring a first feedback current value based on the analog current input unit, and obtaining an input current detection result of the measured object according to a first target current value and the first feedback current value; the closing instruction is transmitted to the object to be tested based on the communication unit, and the input current detection result of the object to be tested is output based on the display unit. The analog signal unit, the communication unit and the object to be detected form the detection loop, so that the signal type which cannot be detected by the traditional detection mode is made up, the communication fault of an electrical system can be detected, and the fault of the electrical system of the lithium electric coating machine can be detected more comprehensively.

Description

Electrical fault detection method and device based on hardware-in-the-loop

Technical Field

The application belongs to the technical field of lithium battery production and manufacturing, and particularly relates to a hardware-in-the-loop-based electrical fault detection method and device.

Background

The coating machine is a core device in the lithium battery production and manufacturing process, the stability of the electrical performance of the coating machine directly influences the final performance of the lithium battery and the capacity of enterprises, and the complexity and troubleshooting difficulty of an electrical system of the coating machine are higher and higher along with the continuous improvement of the requirements of the lithium battery manufacturing process. Once an electrical failure occurs, a large amount of equipment maintenance cost is consumed, and even a great loss such as an unplanned production halt of an enterprise can be caused. Therefore, the method has great significance for quickly and accurately detecting the electrical faults of the coating machine.

The coating machine equipment electrical system mainly comprises a PLC (programmable logic controller), a motor servo driver, a remote IO module, a pneumatic execution unit, various sensors and the like, the electrical equipment is dispersedly installed in each electrical control cabinet, the coupling degree between the electrical equipment and the electrical control cabinet is very high, and new challenges are provided for the troubleshooting of electrical faults. The traditional coating equipment electrical fault troubleshooting technology is generally completed by manual troubleshooting of electrical engineers, and has the following defects:

the detection means is single; the main detection instruments are tools such as a megger, a universal meter, a pincerlike ammeter and the like, so that the circuit on-off and analog output signals can be tested only, and quantitative detection on communication faults, a digital IO module, a high-precision analog IO module, a high-speed counting module and software faults cannot be covered;

the detection efficiency is low, and the detection cost is high; often, a plurality of instruments and a plurality of engineers are required to be matched for investigation, the whole detection process and results are not recorded in a visual digital mode, and time and labor are wasted;

the detection standard is not clear, and the fault positioning difficulty is high; the requirement on detection personnel is high, the detection result judgment is very dependent on the experience of the personnel, and the complex coupling fault cannot be accurately positioned.

Disclosure of Invention

In order to solve the above-mentioned technical problems of single detection means, low detection efficiency, high detection cost, unclear detection standard, large fault positioning difficulty and the like of the conventional coating equipment electrical fault troubleshooting technology, the application provides an electrical fault detection method and device based on a hardware-in-the-loop, and the technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a hardware-in-the-loop-based electrical fault detection method, where the method is applied to an electrical fault automatic detection system, the electrical fault automatic detection system includes an analog signal unit, a communication unit, and a display unit, the analog signal unit includes an analog current input unit, and the method includes:

when the detection type of the object to be detected is determined to be input current, connecting the input end of the analog current input unit with a current output channel of the object to be detected;

generating a first target current value in a preset current interval, and transmitting the first target current value to the tested object based on the communication unit so as to enable a current output channel of the tested object to output the first target current value;

acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit, and obtaining an input current detection result of the detected object according to the first target current value and the first feedback current value;

the closing instruction is transmitted to the object to be tested based on the communication unit, and the input current detection result of the object to be tested is output based on the display unit.

In an alternative of the first aspect, obtaining an input current detection result of the object to be measured according to the first target current value and the first feedback current value includes:

judging whether the difference value of the first target current value and the first feedback current value is in a first preset interval or not;

when the difference value of the first target current value and the first feedback current value is in a first preset interval, determining the input current detection result of the detected object as passing detection;

and when the difference value of the first target current value and the first feedback current value is not in a first preset interval, determining the input current detection result of the detected object as abnormal detection.

In yet another alternative of the first aspect, the analog signal unit further comprises an analog current output unit, the method further comprising:

when the detection type of the object to be detected is determined to be the output current, connecting the output end of the analog current output unit with a current input channel of the object to be detected;

generating a second target current value in a preset current interval, and controlling the analog current output unit to output according to the second target current value;

reading a second feedback current value corresponding to a second target current value acquired by a current input channel of the object to be tested based on the communication unit, and judging whether the difference value between the second target current value and the second feedback current value is in a first preset interval;

when the difference value between the second target current value and the second feedback current value is in a first preset interval, determining the output current detection result of the detected object as passing detection;

when the difference value between the second target current value and the second feedback current value is not in a first preset interval, determining the output current detection result of the detected object as abnormal detection;

and controlling the analog current output unit to stop outputting, and outputting an output current detection result of the tested object based on the display unit.

In yet another alternative of the first aspect, the analog signal unit further comprises an analog voltage input unit, the method further comprising:

when the detection type of the object to be detected is determined to be input voltage, connecting the input end of the analog voltage input unit with a voltage output channel of the object to be detected;

generating a first target voltage value in a preset voltage interval, and transmitting the first target voltage value to the tested object based on the communication unit so that a voltage output channel of the tested object outputs the first target voltage value;

acquiring a first feedback voltage value corresponding to the first target voltage value based on the analog voltage input unit, and judging whether the difference value of the first target voltage value and the first feedback voltage value is in a second preset interval;

when the difference value between the first target voltage value and the first feedback voltage value is in a second preset interval, determining that the input voltage detection result of the detected object is a detection passing result;

when the difference value between the first target voltage value and the first feedback voltage value is not in a second preset interval, determining that the input voltage detection result of the object to be detected is abnormal;

the closing instruction is transmitted to the object to be tested based on the communication unit, and the input voltage detection result of the object to be tested is output based on the display unit.

In yet another alternative of the first aspect, the analog signal unit further comprises an analog voltage output unit, and the method further comprises:

when the detection type of the object to be detected is determined to be the output voltage, connecting the output end of the analog voltage output unit with a voltage input channel of the object to be detected;

generating a second target voltage value in a preset voltage interval, and controlling the analog voltage output unit to output according to the second target voltage value;

reading a second feedback voltage value corresponding to a second target voltage value acquired by a voltage input channel of the object to be tested based on the communication unit, and judging whether the difference value between the second target voltage value and the second feedback voltage value is in a second preset interval;

when the difference value between the second target voltage value and the second feedback voltage value is in a second preset interval, determining that the output voltage detection result of the detected object is a detection pass;

when the difference value between the second target voltage value and the second feedback voltage value is not in a second preset interval, determining that the output voltage detection result of the detected object is abnormal;

and controlling the analog voltage output unit to stop outputting, and outputting an output voltage detection result of the measured object based on the display unit.

In yet another alternative of the first aspect, the analog signal unit further comprises a digital signal input unit, the method further comprising:

when the detection type of the object to be detected is determined to be an input digital signal, connecting the input end of the digital signal input unit with a digital output channel of the object to be detected;

generating a first target digital signal, and transmitting the first target digital signal to the tested object based on the communication unit so as to enable a digital output channel of the tested object to normally output;

acquiring a first feedback digital signal based on a digital signal input unit, and judging whether the first feedback digital signal is a first preset digital threshold value;

when the first feedback digital signal is a first preset digital threshold value, transmitting a closing instruction to the tested object based on the communication unit, and acquiring a second feedback digital signal based on the digital signal input unit;

when the second feedback digital signal is a second preset digital threshold value, determining that the detection result of the input digital signal of the detected object is a detection pass;

when the first feedback digital signal is not the first preset digital threshold, or

And when the second feedback digital signal is not the second preset digital threshold, determining that the detection result of the input digital signal of the tested object is abnormal.

In yet another alternative of the first aspect, the analog signal unit further comprises a digital signal output unit, the method further comprising:

when the detection type of the object to be detected is determined to be the output digital signal, connecting the output end of the digital signal output unit with a digital input channel of the object to be detected;

controlling a digital signal output unit to output according to the first target digital signal, and reading a third feedback digital signal acquired by a digital input channel of the object to be tested based on a communication unit;

when the third feedback digital signal is a first preset digital threshold value, controlling the digital signal output unit to stop outputting, and reading a fourth feedback digital signal acquired by a digital input channel of the object to be tested based on the communication unit;

when the fourth feedback digital signal is a second preset threshold value, determining that the detection result of the output digital signal of the detected object is a detection pass;

when the third feedback digital signal is not the first preset digital threshold, or

And when the fourth feedback digital signal is not the second preset threshold, determining that the detection result of the input digital signal of the tested object is abnormal.

In a second aspect, an embodiment of the present application provides an electrical fault detection apparatus based on a hardware-in-the-loop, where the apparatus is applied to an electrical fault automatic detection system, the electrical fault automatic detection system includes an analog signal unit, a communication unit, and a display unit, the analog signal unit includes an analog current input unit, and the apparatus includes:

the first connecting module is used for connecting the input end of the analog current input unit with a current output channel of the object to be tested when the detection type of the object to be tested is determined to be input current;

the first transmission module is used for generating a first target current value in a preset current interval and transmitting the first target current value to the measured object based on the communication unit so as to enable a current output channel of the measured object to output the first target current value;

the first detection module is used for acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit and obtaining an input current detection result of the detected object according to the first target current value and the first feedback current value;

and the first display module is used for transmitting the closing instruction to the tested object based on the communication unit and outputting the input current detection result of the tested object based on the display unit.

In an alternative of the second aspect, the first detection module comprises:

the judging unit is used for judging whether the difference value of the first target current value and the first feedback current value is in a first preset interval or not;

the first detection unit is used for determining that the input current detection result of the detected object is passing detection when the difference value of the first target current value and the first feedback current value is in a first preset interval;

and the second detection unit is used for determining the input current detection result of the detected object as abnormal detection when the difference value of the first target current value and the first feedback current value is not in the first preset interval.

In a further alternative of the second aspect, the analog signal unit further includes an analog current output unit, and the apparatus further includes:

the second connecting module is used for connecting the output end of the analog current output unit with a current input channel of the object to be tested when the detection type of the object to be tested is determined to be the output current;

the second transmission module is used for generating a second target current value in a preset current interval and controlling the analog current output unit to output according to the second target current value;

the second detection module is used for reading a second feedback current value corresponding to a second target current value acquired by a current input channel of the object to be detected based on the communication unit and judging whether the difference value between the second target current value and the second feedback current value is in a first preset interval or not;

the first judging module is used for determining that the output current detection result of the detected object is a detection pass when the difference value of the second target current value and the second feedback current value is in a first preset interval;

the second judgment module is used for determining that the output current detection result of the detected object is abnormal when the difference value of the second target current value and the second feedback current value is not in the first preset interval;

and the second display module is used for controlling the analog current output unit to stop outputting and outputting the output current detection result of the tested object based on the display unit.

In a further alternative of the second aspect, the analog signal unit further comprises an analog voltage input unit, and the apparatus further comprises:

the third connecting module is used for connecting the input end of the analog voltage input unit with a voltage output channel of the tested object when the detection type of the tested object is determined to be the input voltage;

the third transmission module is used for generating a first target voltage value in a preset voltage interval and transmitting the first target voltage value to the tested object based on the communication unit so as to enable a voltage output channel of the tested object to output the first target voltage value;

the third detection module is used for acquiring a first feedback voltage value corresponding to the first target voltage value based on the analog voltage input unit and judging whether the difference value of the first target voltage value and the first feedback voltage value is in a second preset interval or not;

the third judgment module is used for determining that the input voltage detection result of the object to be detected passes the detection when the difference value between the first target voltage value and the first feedback voltage value is in a second preset interval;

the fourth judging module is used for determining that the input voltage detection result of the detected object is abnormal when the difference value of the first target voltage value and the first feedback voltage value is not in a second preset interval;

and the third display module is used for transmitting the closing instruction to the tested object based on the communication unit and outputting the input voltage detection result of the tested object based on the display unit.

In a further alternative of the second aspect, the analog signal unit further includes an analog voltage output unit, and the apparatus further includes:

the fourth connecting module is used for connecting the output end of the analog voltage output unit with the voltage input channel of the tested object when the detection type of the tested object is determined to be the output voltage;

the fourth transmission module is used for generating a second target voltage value in a preset voltage interval and controlling the analog voltage output unit to output according to the second target voltage value;

the fourth detection module is used for reading a second feedback voltage value corresponding to a second target voltage value acquired by a voltage input channel of the object to be detected based on the communication unit and judging whether the difference value between the second target voltage value and the second feedback voltage value is in a second preset interval or not;

the fifth judgment module is used for determining that the output voltage detection result of the detected object is a detection pass when the difference value between the second target voltage value and the second feedback voltage value is in a second preset interval;

the sixth judging module is used for determining that the output voltage detection result of the detected object is abnormal when the difference value between the second target voltage value and the second feedback voltage value is not in a second preset interval;

and the fourth display module is used for controlling the analog voltage output unit to stop outputting and outputting the output voltage detection result of the tested object based on the display unit.

In a further alternative of the second aspect, the analog signal unit further comprises a digital signal input unit, the apparatus further comprising:

the fifth connecting module is used for connecting the input end of the digital signal input unit with the digital output channel of the tested object when the detection type of the tested object is determined to be the input digital signal;

the fifth transmission module is used for generating a first target digital signal and transmitting the first target digital signal to the tested object based on the communication unit so as to enable a digital output channel of the tested object to normally output;

the fifth detection module is used for acquiring the first feedback digital signal based on the digital signal input unit and judging whether the first feedback digital signal is a first preset digital threshold value or not;

the seventh judging module is used for transmitting a closing instruction to the tested object based on the communication unit when the first feedback digital signal is the first preset digital threshold value, and acquiring a second feedback digital signal based on the digital signal input unit;

an eighth determining module, configured to determine whether the first feedback digital signal is not the first preset digital threshold, or

And when the second feedback digital signal is not the second preset digital threshold, determining that the detection result of the input digital signal of the detected object is abnormal.

In a further alternative of the second aspect, the analog signal unit further comprises a digital signal output unit, the apparatus further comprising:

the sixth connecting module is used for connecting the output end of the digital signal output unit with the digital input channel of the tested object when the detection type of the tested object is determined to be the output digital signal;

the sixth transmission module is used for controlling the digital signal output unit to output according to the first target digital signal and reading a third feedback digital signal acquired by a digital input channel of the object to be tested based on the communication unit;

the sixth detection module is used for controlling the digital signal output unit to stop outputting when the third feedback digital signal is the first preset digital threshold value, and reading a fourth feedback digital signal acquired by the digital input channel of the object to be detected based on the communication unit;

the ninth judging module is used for determining that the detection result of the output digital signal of the detected object is that the detection is passed when the fourth feedback digital signal is the second preset threshold;

a tenth judging module, configured to, when the third feedback digital signal is not the first preset digital threshold, or

In a third aspect, an embodiment of the present application further provides a hardware-in-the-loop-based electrical fault detection apparatus, including a processor and a memory;

the processor is connected with the memory;

a memory for storing executable program code;

the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the hardware-in-the-loop-based electrical fault detection method provided by the first aspect of the embodiments of the present application or any implementation manner of the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer storage medium, where a computer program is stored, where the computer program includes program instructions, and when the program instructions are executed by a processor, the hardware-in-the-loop-based electrical fault detection method provided in the first aspect or any one of the implementations of the first aspect of the embodiment of the present application may be implemented.

In the embodiment of the application, when the electrical device of the coating machine equipment is detected and the detection type of the detected object is determined to be the input current, the input end of the analog current input unit is connected with the current output channel of the detected object; then generating a first target current value in a preset current interval, and transmitting the first target current value to the tested object based on the communication unit so as to enable a current output channel of the tested object to output the first target current value; acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit, and obtaining an input current detection result of the detected object according to the first target current value and the first feedback current value; then, a turn-off command is transmitted to the object to be measured based on the communication unit, and an input current detection result of the object to be measured is output based on the display unit. The analog signal unit, the communication unit and the detected object form a detection loop, so that the signal type which cannot be detected by the traditional detection mode is made up, the communication fault of an electrical system can be detected, and the fault of the electrical system of the lithium electric coating machine can be detected more comprehensively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an overall flowchart schematic diagram of a hardware-in-the-loop-based electrical fault detection method according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an automatic electrical fault detection system according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an electrical fault detection apparatus based on hardware-in-the-loop according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another hardware-in-the-loop-based electrical fault detection apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the following description, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance. The following description provides embodiments of the present application, where different embodiments may be substituted or combined, and thus the present application is intended to include all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes the feature A, B, C and another embodiment includes the feature B, D, then this application should also be considered to include embodiments that include all other possible combinations of one or more of A, B, C, D, although this embodiment may not be explicitly recited in text below.

The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

Referring to fig. 1, fig. 1 is a schematic overall flowchart illustrating a hardware-in-the-loop-based electrical fault detection method according to an embodiment of the present disclosure.

As shown in fig. 1, the hardware-in-the-loop based electrical fault detection method may include at least the following steps:

and 102, when the detection type of the object to be detected is determined to be the input current, connecting the input end of the analog current input unit with a current output channel of the object to be detected.

In the embodiment of the application, the hardware-in-the-loop-based electrical fault detection method can be applied to an electrical fault automatic detection system, and the electrical fault automatic detection system can be used for detecting various electrical devices of the lithium battery coater in different types, so that the fault detection precision and the stability requirement of the lithium battery coater are effectively guaranteed. Here, the automatic electrical fault detection system may include an analog signal unit, a communication unit, and a display unit, wherein the analog signal unit may be used to collect different types of signals of the object to be measured, or may also be used to output different types of signals to the object to be measured, the analog signal unit may be, but is not limited to, any one of an analog current input unit, an analog current output unit, an analog voltage input unit, an analog voltage output unit, a digital signal input unit, and a digital signal output unit, and the object to be measured may be understood as each electrical device of the lithium battery coater. The communication unit can be used for controlling the analog signal unit to execute corresponding actions according to the instructions generated by the automatic electric fault detection system, or transmitting the instructions to the object to be tested so as to enable the object to be tested to execute corresponding actions. The display unit can be, but is not limited to, an LCD display screen, and is used for displaying different types of detection results of various electrical devices of the lithium battery coater to workers, so that the workers can take corresponding measures in time.

It is understood that the automatic electrical fault detection system mentioned in the embodiments of the present application may further include a 24V switching power supply unit, and the 24V switching power supply unit may be used to provide operating power to the analog signal unit, the communication unit, and the display unit mentioned above.

Specifically, when the electrical device of the coater apparatus is detected, the operator selects the detection type corresponding to the object to be detected, and after it is determined that the detection type corresponding to the object to be detected selected by the operator is the input current, the input end of the analog current input unit is connected to the current output channel of the object to be detected. The input end of the analog current input unit can be connected with a current output channel of the object to be detected in advance through a circuit, but the circuit is always in an off state before the detection type corresponding to the object to be detected selected by a worker is determined, and the on-off state of the circuit can be automatically controlled by an automatic electric fault detection system. It can be understood that the input end of the analog current input unit is connected with the current output channel of the measured object, and can be used for collecting the current signal output by the current output channel of the measured object.

Alternatively, the measurement range of the analog current input unit in the embodiment of the present application may be, but is not limited to, set to ± 20mA, and is not limited thereto.

And 104, generating a first target current value in a preset current interval, and transmitting the first target current value to the tested object based on the communication unit so that a current output channel of the tested object outputs the first target current value.

Specifically, after the input end of the analog current input unit is connected with the current output channel of the object to be tested, a first target current value can be randomly generated in a preset current interval, and the first target current value is transmitted to the object to be tested through the communication unit, so that the object to be tested controls the current output channel to output a current signal consistent with the first target current value after receiving a corresponding instruction. Wherein, the preset current interval can be set to 4-20mA, but is not limited to. It is understood that, in the embodiment of the present application, the communication unit may establish a communication connection with the object to be tested in advance, so that the communication unit may transmit the instruction to the object to be tested.

And 106, acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit, and obtaining an input current detection result of the measured object according to the first target current value and the first feedback current value.

Specifically, after the current output channel of the object to be tested is controlled to output the current signal consistent with the first target current value, the analog current input unit may collect a first feedback current value corresponding to the first target current value on the current output channel of the object to be tested, and may return, but is not limited to return, the first feedback current value to the electrical fault automatic detection system through the communication unit, so that the electrical fault automatic detection system determines whether the difference value between the first target current value and the first feedback current value is within the first preset interval. Wherein the first preset interval may be understood as a deviation between the first target current value and the first feedback current value, which may be set to 0-0.1mA, but is not limited thereto.

It can be understood that when the difference value between the first target current value and the first feedback current value is in the first preset interval, the input current detection result of the measured object is determined as passing detection, that is, the input current of the measured object is normal.

When the difference value between the first target current value and the first feedback current value is not in the first preset interval, determining that the input current result of the measured object is abnormal detection, namely that the input current of the measured object has an error.

And step 108, transmitting a closing instruction to the tested object based on the communication unit, and outputting an input current detection result of the tested object based on the display unit.

Specifically, after the input current detection result of the object under test is obtained, a turn-off command may be transmitted to the object under test through the communication unit, so that the object under test stops outputting the current after receiving the turn-off command, and the obtained input current detection result of the object under test is output on the display unit.

In the embodiment of the application, the analog signal unit, the communication unit and the detected object form the detection loop, so that the signal type which cannot be detected by the traditional detection mode is made up, the communication fault of an electrical system can be detected, and the fault of the electrical system of the lithium electric coating machine can be detected more comprehensively.

As an option of the embodiment of the present application, the analog signal unit further includes an analog current output unit, and the method further includes:

Specifically, when the electrical device of the coater apparatus is detected, the operator selects the detection type corresponding to the object to be detected, and after it is determined that the detection type corresponding to the object to be detected selected by the operator is the output current, the output end of the analog current output unit is connected to the current input channel of the object to be detected. The output end of the analog current output unit is connected with the current input channel of the object to be detected in advance through a circuit, but the circuit is always in an off state before the detection type corresponding to the object to be detected selected by a worker is determined, and the on-off state of the circuit can be automatically controlled by an automatic electric fault detection system. It can be understood that the output end of the analog current output unit and the current input channel of the object to be measured can be used for outputting the current signal to the current input channel of the object to be measured.

Furthermore, after the output end of the analog current output unit is connected with the current input channel of the measured object, a second target current value can be randomly generated in a preset current interval, and the analog current output unit is controlled to output according to the second target current value, so that the current input channel of the measured object acquires a second feedback current value corresponding to the second target current value. The second target current value may be, but is not limited to, identical to the first target current value mentioned above, and the preset current interval may be, but is not limited to, set to 4-20A. It is understood that, in the embodiment of the present application, the communication unit may establish a communication connection with the object to be tested in advance, so that the communication unit receives the second feedback current value transmitted by the object to be tested, and the communication unit uploads the second feedback current value to the automatic electrical fault detection system.

Further, after receiving the second feedback current value, the automatic electrical fault detection system may determine whether a difference between the second target current value and the second feedback current value is within a first preset interval. The first preset interval may be understood as a deviation between the second target current value and the second feedback current value, which may be, but is not limited to, set to 0-0.1mA.

It can be understood that when the difference value between the second target current value and the second feedback current value is in the first preset interval, the output current detection result of the measured object is determined to be passed, that is, the output current of the measured object is normal.

And when the difference value between the second target current value and the second feedback current value is not in the first preset interval, determining that the output current result of the measured object is abnormal detection, namely that the output current of the measured object has an error.

Further, after the output current detection result of the object to be measured is obtained, the analog current output unit is controlled to stop outputting the current signal, and the output current detection result of the object to be measured is output based on the display unit.

Alternatively, the measurement range of the analog current output unit in the embodiment of the present application may be, but is not limited to, set to ± 20mA, and is not limited thereto.

As another optional option of the embodiment of the present application, the analog signal unit further includes an analog voltage input unit, and the method further includes:

generating a first target voltage value in a preset voltage interval, and transmitting the first target voltage value to the tested object based on the communication unit so as to enable a voltage output channel of the tested object to output the first target voltage value;

when the difference value between the first target voltage value and the first feedback voltage value is not in a second preset interval, determining that the input voltage detection result of the detected object is abnormal;

Specifically, when the electrical device of the coater apparatus is detected, the operator selects the detection type corresponding to the object to be detected, and after the detection type corresponding to the object to be detected selected by the operator is determined as the input voltage, the input terminal of the analog voltage input unit is connected to the voltage output channel of the object to be detected. The input end of the analog voltage input unit can be connected with a voltage output channel of the object to be detected in advance through a circuit, but the circuit is always in an off state before the detection type corresponding to the object to be detected selected by a worker is determined, and the on-off state of the circuit can be automatically controlled by an automatic electric fault detection system. It can be understood that the input end of the analog voltage input unit is connected with the voltage output channel of the measured object, and can be used for collecting the voltage signal output by the voltage output channel of the measured object.

Furthermore, after the input end of the analog voltage input unit is connected with the voltage output channel of the object to be tested, a first target voltage value can be randomly generated in a preset voltage interval, and the first target voltage value is transmitted to the object to be tested through the communication unit, so that the object to be tested controls the voltage output channel to output a voltage signal consistent with the first target voltage value after receiving a corresponding instruction. The preset voltage interval can be set to-10V, but is not limited to the above. It is understood that, in the embodiment of the present application, the communication unit may establish a communication connection with the object to be tested in advance, so that the communication unit may transmit the instruction to the object to be tested.

Further, after the voltage output channel of the object to be tested is controlled to output the voltage signal consistent with the first target voltage value, the analog voltage input unit may collect a first feedback voltage value corresponding to the first target voltage value on the voltage output channel of the object to be tested, and may return, but is not limited to, the first feedback voltage value to the automatic electrical fault detection system through the communication unit, so that the automatic electrical fault detection system determines whether the difference between the first target voltage value and the first feedback voltage value is within the first preset interval. The first predetermined interval may be understood as a deviation between the first target voltage value and the first feedback voltage value, which may be, but is not limited to, set to 0-10mV.

It can be understood that when the difference value between the first target voltage value and the first feedback voltage value is in the first preset interval, the input voltage detection result of the measured object is determined as passing detection, that is, the input voltage of the measured object is normal.

When the difference value between the first target voltage value and the first feedback voltage value is not in the first preset interval, determining that the input voltage result of the measured object is abnormal detection, namely that an error exists in the input voltage of the measured object.

Further, after the input voltage detection result of the object to be measured is obtained, a closing instruction may be transmitted to the object to be measured through the communication unit, so that the object to be measured stops outputting the voltage after receiving the closing instruction, and the obtained input voltage detection result of the object to be measured is output on the display unit.

Alternatively, the measurement range of the analog voltage input unit in the embodiment of the present application may be, but is not limited to, set to ± 10V, and is not limited thereto.

As still another optional option of the embodiment of the present application, the analog signal unit further includes an analog voltage output unit, and the method further includes:

Specifically, when the electrical device of the coater apparatus is detected, the operator selects the detection type corresponding to the object to be detected, and after it is determined that the detection type corresponding to the object to be detected selected by the operator is the output voltage, the output end of the analog voltage output unit is connected to the voltage input channel of the object to be detected. The output end of the analog voltage output unit is connected with the voltage input channel of the object to be detected in advance through a circuit, but the circuit is always in an off state before the detection type corresponding to the object to be detected, which is selected by a worker, is determined, and the on-off state of the circuit can be automatically controlled by an automatic electric fault detection system. It can be understood that the output terminal of the analog voltage output unit and the voltage input channel of the object to be measured can be used for outputting the voltage signal to the voltage input channel of the object to be measured.

Further, after the output end of the analog voltage output unit is connected with the voltage input channel of the object to be tested, a second target voltage value can be randomly generated in a preset voltage interval, and the analog voltage output unit is controlled to output according to the second target voltage value, so that the voltage input channel of the object to be tested acquires a second feedback voltage value corresponding to the second target voltage value. Wherein, the second target voltage value can be but is not limited to be consistent with the first target voltage value mentioned above, and the preset voltage interval can be but is not limited to be set to-10 mV. It can be understood that, in the embodiment of the present application, the communication unit may establish a communication connection with the object to be tested in advance, so that the communication unit receives the second feedback voltage value transmitted by the object to be tested, and uploads the second feedback voltage value to the automatic electrical fault detection system by the communication unit.

Further, after receiving the second feedback voltage value, the automatic electrical fault detection system may determine whether a difference between the second target voltage value and the second feedback voltage value is within a first preset interval. The first predetermined interval may be understood as a deviation between the second target voltage value and the second feedback voltage value, which may be, but is not limited to, set to 0-10mV.

It can be understood that when the difference between the second target voltage value and the second feedback voltage value is in the first preset interval, the output voltage detection result of the measured object is determined to be a detection pass, that is, the output voltage of the measured object is normal.

When the difference value between the second target voltage value and the second feedback voltage value is not in the first preset interval, determining that the output voltage result of the measured object is abnormal detection, namely that an error exists in the output voltage of the measured object.

Further, after the output voltage detection result of the object to be measured is obtained, the analog voltage output unit is controlled to stop outputting the voltage signal, and the output voltage detection result of the object to be measured is output based on the display unit.

Alternatively, the measurement range of the analog voltage output unit in the embodiment of the present application may be, but is not limited to, set to ± 10V, and is not limited thereto.

As still another option of the embodiment of the present application, the analog signal unit further includes a digital signal input unit, and the method further includes:

Specifically, when the electrical device of the coater apparatus is detected, the operator selects the detection type corresponding to the object to be detected, and after it is determined that the detection type corresponding to the object to be detected selected by the operator is the input digital signal, the input end of the digital signal input unit is connected to the digital output channel of the object to be detected. The input end of the digital signal input unit can be connected with a digital output channel of a tested object in advance through a circuit, but the circuit is always in an off state before the detection type corresponding to the tested object selected by a worker is determined, and the on-off state of the circuit can be automatically controlled by an automatic electric fault detection system. It can be understood that the input end of the digital signal input unit is connected to the digital output channel of the object to be measured, and can be used for collecting the digital signal output by the digital output channel of the object to be measured.

Further, after the input terminal of the digital signal input unit is connected with the digital output channel of the object to be tested, a first target digital signal may be generated and transmitted to the object to be tested by the communication unit, so that the digital output channel of the object to be tested normally outputs the digital signal. The first target digital signal may be, but is not limited to, a signal representing a digital 1 or a signal representing a normal output digital signal, and is not limited thereto.

Furthermore, a digital signal input unit can acquire a first feedback digital signal in a digital output channel of the object to be detected, and the first feedback digital signal is uploaded to an automatic electrical fault detection system, so that the automatic electrical fault detection system can judge whether the first feedback digital signal is a first preset digital threshold value. The first preset digital threshold may be set to 1, but is not limited to be set to 1, so as to represent that the digital output channel of the measured object normally outputs a digital signal.

Possibly, when it is determined that the first feedback digital signal is the first preset digital threshold, it is further determined whether the tested object has a fault when the tested object stops outputting the digital signal, that is, the communication unit may transmit the shutdown instruction to the tested object, so that the tested object stops outputting the digital signal according to the received shutdown instruction. Then, the digital signal input unit can continue to collect a second feedback digital signal in the digital output channel of the object to be detected, and the second feedback digital signal is uploaded to the automatic electric fault detection system, so that the automatic electric fault detection system can judge whether the second feedback digital signal is a second preset digital threshold value. It is understood that, here, the second preset digital threshold may be set to 0, but is not limited to, to stop outputting the digital signal by the digital output channel for characterizing the object to be tested, and it is possible to determine that the input digital signal detection result of the object to be tested is passing detection when the second feedback digital signal is the second preset digital threshold; possibly, when the second feedback digital signal is not the second preset digital threshold, determining that the input digital signal detection result of the tested object is abnormal.

Possibly, when the first feedback digital signal is determined not to be the first preset digital threshold, the detection result of the input digital signal of the detected object can be directly determined to be abnormal.

Alternatively, the rated voltage of the digital signal input unit in the embodiment of the present application may be set to, but is not limited to, 24V, and is not limited thereto.

As still another option of the embodiment of the present application, the analog signal unit further includes a digital signal output unit, and the method further includes:

Specifically, the present embodiment can refer to the aforementioned embodiments, and will not be described herein in detail.

Alternatively, the rated voltage of the digital signal output unit in the embodiment of the present application may be set to, but is not limited to, 24V, and is not limited thereto.

Referring to fig. 2, fig. 2 is a schematic structural diagram illustrating an automatic electrical fault detection system according to an embodiment of the present disclosure.

As shown in fig. 2, the automatic electrical fault detection system may include an LCD display, a Linux RT real-time system, automatic electrical fault detection software, a 24V switching power supply unit, an analog current input unit, an analog current output unit, an analog voltage input unit, an analog voltage output unit, a digital signal input unit, a digital signal output unit, and a Modbus RS485 communication unit. The I/O port of the Linux RT real-time system can be connected with the LCD and the electrical fault automatic detection software, and the Linux RT real-time system can also be connected with the 24V switching power supply unit, the analog current input unit, the analog current output unit, the analog voltage input unit, the analog voltage output unit, the digital signal input unit, the digital signal output unit and the Modbus RS485 communication unit.

In the embodiment of the application, the analog current output unit, the analog voltage output unit, the digital output unit, the Modbus RS485 communication unit and the I/O port of the tested object are added to form the test loop, so that the signal type which cannot be detected by the traditional detection mode is made up, the communication fault of an electrical system can be detected, and the fault of the electrical system of the lithium-ion coating machine can be detected more comprehensively.

Secondly, based on the principle of hardware-in-the-loop detection, electrical fault automatic detection software is additionally arranged, the detection process is automatically executed, process data are recorded, and the detection result is judged, so that the detection efficiency is improved, and the detection labor cost and time cost are saved.

Meanwhile, various signal types are built in, so that the bidirectional detection of the electrical control cabinet and the sensing execution mechanism of the lithium battery coating machine can be realized, and the diagnosis precision of high-coupling electrical faults is improved.

Referring to fig. 3, fig. 3 is a schematic structural diagram illustrating a hardware-in-the-loop-based electrical fault detection apparatus according to an embodiment of the present disclosure.

The device for detecting the electrical fault based on the hardware-in-the-loop in the embodiment of the application is applied to an automatic electrical fault detection system, the automatic electrical fault detection system comprises an analog signal unit, a communication unit and a display unit, the analog signal unit comprises an analog current input unit, and the device at least comprises a first connection module 301, a first transmission module 302, a first detection module 303 and a first display module 304, wherein:

a first connection module 301, configured to connect an input end of the analog current input unit with a current output channel of the object to be tested when it is determined that the detection type of the object to be tested is an input current;

the first transmission module 302 is configured to generate a first target current value within a preset current interval, and transmit the first target current value to the measured object based on the communication unit, so that a current output channel of the measured object outputs the first target current value;

the first detection module 303 is configured to acquire a first feedback current value corresponding to the first target current value based on the analog current input unit, and obtain an input current detection result of the object to be detected according to the first target current value and the first feedback current value;

and a first display module 304 for transmitting a closing instruction to the object to be tested based on the communication unit and outputting an input current detection result of the object to be tested based on the display unit.

In some possible embodiments, the first detection module comprises:

In some possible embodiments, the analog signal unit further includes an analog current output unit, and the apparatus further includes:

the second connecting module is used for connecting the output end of the analog current output unit with the current input channel of the tested object when the detection type of the tested object is determined to be the output current;

the first judgment module is used for determining that the output current detection result of the detected object is detection passing when the difference value of the second target current value and the second feedback current value is in a first preset interval;

In some possible embodiments, the analog signal unit further includes an analog voltage input unit, and the apparatus further includes:

the third judging module is used for determining that the input voltage detection result of the object to be detected is passed when the difference value between the first target voltage value and the first feedback voltage value is in a second preset interval;

In some possible embodiments, the analog signal unit further includes an analog voltage output unit, and the apparatus further includes:

In some possible embodiments, the analog signal unit further comprises a digital signal input unit, the apparatus further comprising:

In some possible embodiments, the analog signal unit further includes a digital signal output unit, and the apparatus further includes:

It is clear to a person skilled in the art that the solution according to the embodiments of the present application can be implemented by means of software and/or hardware. The "unit" and "module" in this specification refer to software and/or hardware that can perform a specific function independently or in cooperation with other components, where the hardware may be, for example, a Field-Programmable Gate Array (FPGA), an Integrated Circuit (IC), or the like.

Each processing unit and/or module in the embodiments of the present application may be implemented by an analog circuit that implements the functions of the embodiments of the present application, or may be implemented by software that executes the functions of the embodiments of the present application.

Referring to fig. 4, fig. 4 is a schematic structural diagram illustrating another hardware-in-the-loop-based electrical fault detection apparatus according to an embodiment of the present disclosure.

As shown in fig. 4, the hardware-in-the-loop based electrical fault detection apparatus 400 may include: at least one processor 401, at least one network interface 404, a user interface 403, a memory 405, and at least one communication bus 402.

The communication bus 402 may be used for implementing the connection communication of the above components.

The user interface 403 may include keys, and the optional user interface may also include a standard wired interface or a wireless interface.

The network interface 404 may include, but is not limited to, a bluetooth module, an NFC module, a Wi-Fi module, and the like.

Processor 401 may include one or more processing cores, among others. The processor 401 interfaces with various components throughout the electronic device 400 using various interfaces and circuitry to perform various functions of the routing device 400 and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 405 and invoking data stored in the memory 405. Optionally, the processor 401 may be implemented in at least one hardware form of DSP, FPGA, or PLA. The processor 401 may integrate one or a combination of a CPU, a GPU, a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It is understood that the modem may not be integrated into the processor 401, but may be implemented by a single chip.

The memory 405 may include a RAM or a ROM. Optionally, the memory 405 includes a non-transitory computer readable medium. The memory 405 may be used to store instructions, programs, code sets, or instruction sets. The memory 405 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, and the like; the storage data area may store data and the like referred to in the above respective method embodiments. The memory 405 may alternatively be at least one storage device located remotely from the aforementioned processor 401. As shown in fig. 3, memory 405, which is a type of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a hardware-in-the-loop based electrical fault detection application.

In particular, processor 401 may be configured to invoke a hardware-in-the-loop based electrical fault detection application stored in memory 405 and to perform the following operations in particular:

In some possible embodiments, obtaining the input current detection result of the measured object according to the first target current value and the first feedback current value includes:

when the difference value of the first target current value and the first feedback current value is in a first preset interval, determining that the input current detection result of the detected object is passing detection;

In some possible embodiments, the analog signal unit further includes an analog current output unit, and the method further includes:

In some possible embodiments, the analog signal unit further includes an analog voltage input unit, and the method further includes:

In some possible embodiments, the analog signal unit further includes an analog voltage output unit, and the method further includes:

In some possible embodiments, the analog signal unit further comprises a digital signal input unit, the method further comprising:

In some possible embodiments, the analog signal unit further comprises a digital signal output unit, the method further comprising:

The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVD, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some service interfaces, devices or units, and may be an electrical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, and the memory may include: flash disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.

The above are merely exemplary embodiments of the present disclosure, and the scope of the present disclosure should not be limited thereby. That is, all equivalent changes and modifications made in accordance with the teachings of the present disclosure are intended to be included within the scope of the present disclosure. Embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A hardware-in-the-loop-based electrical fault detection method is applied to an electrical fault automatic detection system, the electrical fault automatic detection system comprises an analog signal unit, a communication unit and a display unit, the analog signal unit comprises an analog current input unit, and the method comprises the following steps:

generating a first target current value in a preset current interval, and transmitting the first target current value to the measured object based on the communication unit so as to enable a current output channel of the measured object to output the first target current value;

acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit, and obtaining an input current detection result of the measured object according to the first target current value and the first feedback current value;

transmitting a closing instruction to the object to be measured based on the communication unit, and outputting an input current detection result of the object to be measured based on the display unit.

2. The method of claim 1, wherein obtaining the input current detection result of the object according to the first target current value and the first feedback current value comprises:

when the difference value between the first target current value and the first feedback current value is in the first preset interval, determining that the input current detection result of the detected object is passing detection;

and when the difference value between the first target current value and the first feedback current value is not in the first preset interval, determining that the input current detection result of the detected object is abnormal detection.

3. The method of claim 2, wherein the analog signal unit further comprises an analog current output unit, the method further comprising:

when the detection type of the tested object is determined to be the output current, connecting the output end of the analog current output unit with a current input channel of the tested object;

generating a second target current value in the preset current interval, and controlling the analog current output unit to output according to the second target current value;

reading a second feedback current value corresponding to the second target current value acquired by a current input channel of the measured object based on the communication unit, and judging whether the difference value between the second target current value and the second feedback current value is in the first preset interval;

when the difference value between the second target current value and the second feedback current value is in the first preset interval, determining that the output current detection result of the detected object is passing detection;

when the difference value between the second target current value and the second feedback current value is not in the first preset interval, determining that the output current detection result of the detected object is abnormal;

4. The method of claim 1, wherein the analog signal unit further comprises an analog voltage input unit, the method further comprising:

generating a first target voltage value in a preset voltage interval, and transmitting the first target voltage value to the measured object based on the communication unit so that a voltage output channel of the measured object outputs the first target voltage value;

when the difference value between the first target voltage value and the first feedback voltage value is in the second preset interval, determining that the input voltage detection result of the detected object is passed;

when the difference value between the first target voltage value and the first feedback voltage value is not in the second preset interval, determining that the input voltage detection result of the measured object is abnormal;

transmitting a closing instruction to the object to be measured based on the communication unit, and outputting an input voltage detection result of the object to be measured based on the display unit.

5. The method of claim 4, wherein the analog signal unit further comprises an analog voltage output unit, the method further comprising:

generating a second target voltage value in the preset voltage interval, and controlling the analog voltage output unit to output according to the second target voltage value;

reading a second feedback voltage value corresponding to the second target voltage value acquired by a voltage input channel of the object to be tested based on the communication unit, and judging whether the difference value between the second target voltage value and the second feedback voltage value is in a second preset interval;

when the difference value between the second target voltage value and the second feedback voltage value is in the second preset interval, determining that the output voltage detection result of the detected object is passing detection;

when the difference value between the second target voltage value and the second feedback voltage value is not in the second preset interval, determining that the output voltage detection result of the detected object is abnormal;

6. The method of claim 1, wherein the analog signal unit further comprises a digital signal input unit, the method further comprising:

when the detection type of the tested object is determined to be an input digital signal, connecting the input end of the digital signal input unit with a digital output channel of the tested object;

acquiring a first feedback digital signal based on the digital signal input unit, and judging whether the first feedback digital signal is a first preset digital threshold value;

when the first feedback digital signal is the first preset digital threshold value, transmitting a closing instruction to the tested object based on the communication unit, and acquiring a second feedback digital signal based on the digital signal input unit;

when the second feedback digital signal is the second preset digital threshold, determining that the detection result of the input digital signal of the detected object is a passing detection;

7. The method of claim 6, wherein the analog signal unit further comprises a digital signal output unit, the method further comprising:

when the detection type of the tested object is determined to be the output digital signal, connecting the output end of the digital signal output unit with a digital input channel of the tested object;

controlling the digital signal output unit to output according to the first target digital signal, and reading a third feedback digital signal acquired by a digital input channel of the measured object based on the communication unit;

when the third feedback digital signal is the first preset digital threshold, controlling the digital signal output unit to stop outputting, and reading a fourth feedback digital signal acquired by a digital input channel of the measured object based on the communication unit;

when the fourth feedback digital signal is the second preset threshold, determining that the detection result of the output digital signal of the detected object is a detection pass;

And when the fourth feedback digital signal is not the second preset threshold, determining that the detection result of the input digital signal of the measured object is abnormal.

8. An electrical fault detection device based on hardware-in-the-loop, wherein the device is applied to an electrical fault automatic detection system, the electrical fault automatic detection system comprises an analog signal unit, a communication unit and a display unit, the analog signal unit comprises an analog current input unit, and the device comprises:

the first connecting module is used for connecting the input end of the analog current input unit with a current output channel of the tested object when the detection type of the tested object is determined to be input current;

the first detection module is used for acquiring a first feedback current value corresponding to the first target current value based on the analog current input unit and obtaining an input current detection result of the measured object according to the first target current value and the first feedback current value;

the first display module is used for transmitting a closing instruction to the measured object based on the communication unit and outputting an input current detection result of the measured object based on the display unit.

9. The hardware-in-the-loop-based electrical fault detection device is characterized by comprising a processor and a memory;

the processor is connected with the memory;

the memory for storing executable program code;

the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for performing the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, characterized in that instructions are stored which, when run on a computer or processor, cause the computer or processor to carry out the steps of the method according to any one of claims 1 to 7.