CN115598445B

CN115598445B - Electrical fault detection method and device based on hardware-in-loop

Info

Publication number: CN115598445B
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: 2023-12-01
Anticipated expiration: 2042-10-25
Also published as: CN115598445A

Abstract

The application discloses a hardware-in-loop-based electrical fault detection method and device, wherein the method comprises the following steps: when the detection type of the detected object is determined to be input current, connecting an analog current input unit with the detected object; 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 the first target current value and the first feedback current value; the closing instruction is transmitted to the tested object based on the communication unit, and the input current detection result of the tested object is output based on the display unit. By forming the detection loop by the analog signal unit, the communication unit and the detected object, the method not only makes up the type of the signal which cannot be detected by the traditional detection mode, but also can detect the communication fault of the electrical system, and can more comprehensively detect the fault of the electrical system of the lithium electric coating machine.

Description

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

Technical Field

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

Background

The coater is core equipment in the lithium battery production and manufacturing process, the stability of the electrical performance of the coater directly influences the final performance of the lithium battery and the productivity of enterprises, and along with the continuous improvement of the requirements of the lithium battery production process, the complexity of an electrical system of the coater and the troubleshooting difficulty are also higher. In the event of an electrical failure, not only is significant equipment maintenance costs spent, but significant loss, such as an unplanned downtime of the enterprise, may even result. Therefore, the method has important significance for quickly and accurately detecting the electrical faults of the coating machine.

The electrical system of the coater equipment mainly comprises a PLC (programmable logic controller), a motor servo driver, a remote IO module, a pneumatic execution unit, various sensors and the like, and the electrical equipment is installed in each electrical control cabinet in a scattered manner, so that the coupling degree between the electrical equipment and the electrical control cabinet is very high, and a new challenge is provided for the investigation of electrical faults. The traditional electrical fault checking technology of the coating equipment is generally finished by manual checking by an electrical engineer, and the following defects exist:

the detection means is single; because the main detection instrument is tools such as a megger, a universal meter, a clamp ammeter and the like, the on-off of a circuit and the detection of an analog output signal can be only carried out, and quantitative detection of communication faults, digital IO modules, high-precision analog IO modules, high-speed counting modules and software faults can not be realized;

The detection efficiency is low, and the detection cost is high; often, a plurality of meters and a plurality of engineers are matched for investigation, and the whole detection process and the result have no visual digital record, thus time and labor are wasted;

the detection standard is unclear, and the fault positioning difficulty is high; the requirements on detection personnel are high, the judgment of detection results is very dependent on personnel experience, and complex coupling faults cannot be accurately positioned.

Disclosure of Invention

The application provides a hardware-in-loop-based electric fault detection method and device, which are used for solving the technical problems of single detection means, low detection efficiency, high detection cost, unclear detection standard, high fault positioning difficulty and the like of the traditional electric fault detection technology of coating equipment, and the technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a hardware-in-loop-based electrical fault detection method, where the method is applied to an electrical fault automatic detection system, where 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 detected object is determined to be input current, the input end of the analog current input unit is connected with a current output channel of the detected object;

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 so that a current output channel of the measured object outputs the first target current value;

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

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

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

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

when the difference value between 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 detection passing;

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.

In a further 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 detected object is determined to be output current, the output end of the analog current output unit is connected with a current input channel of the detected object;

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 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 a first preset interval or not;

when the difference value between the second target current value and the second feedback current value is in a 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;

the analog current output unit is controlled to stop outputting, and an output current detection result of the measured object is output based on the display unit.

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

generating a first target voltage value in a preset voltage interval, and transmitting the first target voltage value to a tested object based on a 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 between the first target voltage value and the first feedback voltage value is in a second preset interval or not;

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 passing detection;

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;

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

In a further alternative of the first aspect, the analog signal unit further comprises an analog voltage output unit, the method further comprising:

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

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 measured object 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;

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 passing detection;

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;

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

In a further 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 detected object is determined to be the input digital signal, the input end of the digital signal input unit is connected with a digital output channel of the detected object;

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

collecting 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 or not;

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

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

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

In a further 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 detected object is determined to be the output digital signal, the output end of the digital signal output unit is connected with a digital input channel of the detected object;

the digital signal output unit is controlled to output according to the first target digital signal, and the third feedback digital signal acquired by the digital input channel of the tested object is read based on the 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 tested object 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 passing detection;

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

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

In a second aspect, an embodiment of the present application provides an electrical fault detection device based on hardware-in-the-loop, where the device 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 device includes:

The first connection 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 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 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;

the first detection module is used for acquiring a first feedback current value corresponding to a first target current value based on the analog current input unit and obtaining an input current detection result of the tested 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 tested object based on the communication unit and outputting an input current detection result of the tested object based on the display unit.

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

the judging unit is used for judging whether the difference value between 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 detection passing when the difference value between 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 that the input current detection result of the detected object is abnormal when the difference value between the first target current value and the first feedback current value is not in a first preset interval.

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

the second connection module is used for connecting the output end of the analog current output unit with a current input channel of the tested object when the detection type of the tested object is determined to be 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 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 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 passing detection when the difference value between the second target current value and the second feedback current value is in a first preset interval;

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

and the second display module is used for 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 a further alternative of the second aspect, the analog signal unit further comprises an analog voltage input unit, the apparatus further comprising:

the third connection module is used for connecting the input end of the analog voltage input unit with the 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 that a voltage output channel of the tested object outputs 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 between the first target voltage value and the first feedback voltage value is in a second preset interval or not;

The third judging module is used for determining that the input voltage detection result of the detected object is passing 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 between 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 comprises an analog voltage output unit, the apparatus further comprising:

the fourth connection 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 the second target voltage value acquired by the voltage input channel of the measured object 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;

A fifth judging module, configured to determine that the output voltage detection result of the detected object is passing when the difference 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 an 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:

a fifth connection module, configured to connect an input end of the digital signal input unit with a digital output channel of the measured object when the detection type of the measured 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 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 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 a first preset digital threshold value, and collecting a second feedback digital signal based on the digital signal input unit;

an eighth judging module for, when the first feedback digital signal is not the first preset digital threshold value, or

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 connection 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 measured object 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 a first preset digital threshold value, and reading a fourth feedback digital signal acquired by a digital input channel of the tested object based on the communication unit;

a ninth judging module, configured to determine that the detection result of the output digital signal of the detected object is passing when the fourth feedback digital signal is a second preset threshold;

a tenth judgment module for, when the third feedback digital signal is not the first preset digital threshold value, or

In a third aspect, an embodiment of the present application further provides a hardware-in-loop electrical fault detection device, 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, for implementing the hardware-in-loop-based electrical fault detection method provided in the first aspect of the embodiment 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, where the program instructions, when executed by a processor, implement the hardware-in-loop electrical fault detection method provided in the first aspect or any implementation manner of the first aspect of the present application.

In the embodiment of the application, when the detection type of the detected object is determined to be the input current during the detection of the electric device of the coating machine equipment, 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 a tested object based on a communication unit so that a current output channel of the tested object outputs the first target current value; then, 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 tested object according to the first target current value and the first feedback current value; then, a closing instruction is transmitted to the tested object based on the communication unit, and an input current detection result of the tested object is output based on the display unit. By forming the detection loop by the analog signal unit, the communication unit and the detected object, the method not only makes up the type of the signal which cannot be detected by the traditional detection mode, but also can detect the communication fault of the electrical system, and can more comprehensively detect the fault of the electrical system of the lithium electric coating machine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

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

fig. 4 is a schematic structural diagram of another electrical fault detection device based on hardware-in-loop 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 accompanying drawings in the embodiments of the present application.

In the following description, the terms "first," "second," and "first," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The following description provides various embodiments of the application that may be substituted or combined between different embodiments, and thus the application is also to be considered as embracing all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then the present application should also be considered to include embodiments that include one or more of all other possible combinations including A, B, C, D, although such an embodiment may not be explicitly recited in the following.

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 application. Various examples may omit, replace, or add various procedures or components as appropriate. For example, the described methods may be performed in a different order than 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 shows an overall flow diagram of a hardware-in-loop-based electrical fault detection method according to an embodiment of the present application.

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

step 102, when 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.

The hardware-in-loop-based electrical fault detection method in the embodiment of the application 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 a lithium battery coating machine, but is not limited to detection of various types, so that the fault detection precision and stability requirements of the lithium battery coating machine are effectively ensured. Here, the electrical fault automatic detection system may include an analog signal unit, a communication unit, and a display unit, where the analog signal unit may be used to collect different types of signals of the measured object, or may also be used to output different types of signals to the measured object, and 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 measured object 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 tested object so as to enable the tested object to execute the corresponding actions. The display unit can be, but is not limited to, an LCD (liquid crystal display) screen for displaying different types of detection results of each electric device of the lithium battery coating machine to a worker so as to facilitate the worker to make corresponding measures in time.

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

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

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

Step 104, 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 that the current output channel of the measured 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 tested object, a first target current value can be randomly generated in a preset current interval, and the first target current value is transmitted to the tested object through the communication unit, so that the tested object 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 may be, but is not limited to being set to 4-20mA. It can be appreciated 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 an 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 controlling the current output channel of the measured object 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 measured object, and may, but is not limited to, return the first feedback current value to the electrical fault automatic detection system through the communication unit, so as to determine whether the difference between the first target current value and the first feedback current value is within a first preset interval by the electrical fault automatic detection system. 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, but is not limited to, set to 0-0.1mA.

It can be understood that when the difference between the first target current value and the first feedback current value is in the first preset interval, it is determined that the input current detection result of the detected object is that the detection is passed, that is, the input current of the detected 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, namely that the input current of the measured object has errors.

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 measured object is obtained, a closing instruction may be transmitted to the measured object through the communication unit, so that the measured object stops outputting the current after receiving the closing instruction, and the obtained input current detection result of the measured object is output at 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 in the traditional detection mode is made up, the communication fault of the electric system can be detected, and the electric system fault 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 detecting the electrical device of the coater apparatus, the worker first selects the detection type corresponding to the detected object, and after determining that the detection type selected by the worker and corresponding to the detected object is the output current, the output end of the analog current output unit is connected with the current input channel of the detected object. The output end of the analog current output unit is connected with the current input channel of the tested object through a circuit in advance, but the circuit is always in an off state before determining the detection type which is selected by the staff and corresponds to the tested object, and the on-off state of the circuit can be automatically controlled by an electric fault automatic detection system but is not limited to the on-off state of the circuit. It can be understood that the output end of the analog current output unit and the current input channel of the tested object can be used for outputting a current signal to the current input channel of the tested object.

Further, 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 can be appreciated 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 electrical fault automatic detection system.

Further, the electrical fault automatic detection system can determine whether the difference between the second target current value and the second feedback current value is within the first preset interval after receiving the second feedback current value. Wherein 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 between the second target current value and the second feedback current value is in the first preset interval, it is determined that the output current detection result of the detected object is that the detection is passed, that is, the output current of the detected object is normal.

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 of the measured object is abnormal in detection, namely that the output current of the measured object has errors.

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

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

As a further alternative of the embodiment of the present application, the analog signal unit further comprises an analog voltage input unit, and the method further comprises:

Specifically, when detecting the electrical device of the coater apparatus, the worker first selects the detection type corresponding to the detected object, and after determining that the detection type selected by the worker and corresponding to the detected object is the input voltage, the input end of the analog voltage input unit is connected with the voltage output channel of the detected object. The input end of the analog voltage input unit can be connected with the voltage output channel of the tested object through a circuit in advance, but the circuit is always in an off state before determining the detection type which is selected by the staff and corresponds to the tested object, and the on-off state of the circuit can be automatically controlled by an electric fault automatic 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 tested object, and can be used for collecting the voltage signal output by the voltage output channel of the tested object.

Further, after the input end of the analog voltage input unit is connected with the voltage output channel of the tested object, a first target voltage value can be randomly generated in a preset voltage interval, and the first target voltage value is transmitted to the tested object through the communication unit, so that the tested object can control 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, but is not limited to, set to-10V. It can be appreciated 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 an instruction to the object to be tested.

Further, after the voltage output channel of the measured object is controlled to output the voltage signal consistent with the first target voltage value, the analog voltage input unit may collect the first feedback voltage value corresponding to the first target voltage value on the voltage output channel of the measured object, and may, but is not limited to, return the first feedback voltage value to the electrical fault automatic detection system through the communication unit, so that the electrical fault automatic detection system may determine whether the difference between the first target voltage value and the first feedback voltage value is in the first preset interval. The first preset 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 between the first target voltage value and the first feedback voltage value is in the first preset interval, it is determined that the input voltage detection result of the detected object is that the detection is passed, that is, the input voltage of the detected object is normal.

When the difference 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 tested object is abnormal, namely that the input voltage of the tested object has errors.

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

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

As yet another alternative 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 detecting the electrical device of the coater apparatus, the worker first selects the detection type corresponding to the detected object, and after determining that the detection type selected by the worker and corresponding to the detected object is the output voltage, the output end of the analog voltage output unit is connected with the voltage input channel of the detected object. The output end of the analog voltage output unit is connected with the voltage input channel of the tested object through a circuit in advance, but the circuit is always in an off state before determining the detection type which is selected by the staff and corresponds to the tested object, and the on-off state of the circuit can be automatically controlled by an electric fault automatic detection system but is not limited to the on-off state of the circuit. It can be understood that the output end of the analog voltage output unit and the voltage input channel of the tested object can be used for outputting a voltage signal to the voltage input channel of the tested object.

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

Further, the electrical fault automatic detection system can determine whether the difference between the second target voltage value and the second feedback voltage value is within the first preset interval after receiving the second feedback voltage value. The first preset 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, it is determined that the output voltage detection result of the detected object is that the detection is passed, that is, the output voltage of the detected 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 of the measured object is abnormal in detection, that is, that the output voltage of the measured object has errors.

Further, after the output voltage detection result of the measured object is obtained, the analog voltage output unit is controlled to stop outputting the voltage signal, and the output voltage detection result of the measured object 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 set to ±10v, but is not limited thereto.

As yet another alternative 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 detecting the electrical device of the coater apparatus, the worker first selects the detection type corresponding to the detected object, and after determining that the detection type selected by the worker and corresponding to the detected object is the input digital signal, the input end of the digital signal input unit is connected with the digital output channel of the detected object. The input end of the digital signal input unit can be connected with the digital output channel of the tested object through a circuit in advance, but the circuit is always in an off state before determining the detection type which is selected by the staff and corresponds to the tested object, and the on-off state of the circuit can be automatically controlled by an electric fault automatic detection system. It can be understood that the input end of the digital signal input unit is connected with the digital output channel of the tested object, and can be used for collecting the digital signal output by the digital output channel of the tested object.

Further, after the input end of the digital signal input unit is connected with the digital output channel of the tested object, a first target digital signal can be generated, and the communication unit transmits the first target digital signal to the tested object, so that the digital output channel of the tested object 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, which is not limited herein.

Further, the digital signal input unit may collect the first feedback digital signal in the digital output channel of the tested object, and upload the first feedback digital signal to the electrical fault automatic detection system, so that the electrical fault automatic detection system may determine whether the first feedback digital signal is a first preset digital threshold value. The first preset digital threshold may be, but not limited to, set to 1, so as to be used for representing that the digital output channel of the tested 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 required to determine whether the tested object has a fault when stopping outputting the digital signal, that is, the communication unit transmits the closing instruction to the tested object, so that the tested object stops outputting the digital signal according to the received closing instruction. Then, the digital signal input unit can collect the second feedback digital signal in the digital output channel of the tested object, and upload the second feedback digital signal 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 can be understood that the second preset digital threshold may be, but not limited to, set to 0, so as to be used for representing that the digital output channel of the tested object stops outputting the digital signal, and possibly, when the second feedback digital signal is the second preset digital threshold, determining that the detection result of the input digital signal of the tested object is the detection passing; possibly, 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.

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

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

As yet another alternative 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 above-mentioned embodiments, and is not repeated here.

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

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

As shown in fig. 2, the electrical fault automatic detection system may include an LCD liquid crystal display, a Linux RT real-time system, electrical fault automatic 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 an LCD and an electric fault automatic detection software, and the Linux RT real-time system can also be connected with 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.

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

And secondly, based on the principle of hardware-in-loop detection, the automatic detection software for electric faults is additionally provided, the detection flow is automatically executed, the process data are recorded, the detection result is judged, the detection efficiency is improved, and the labor cost and the time cost of detection are saved.

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

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

The electrical fault detection device based on hardware-in-the-loop in the embodiment of the application is applied to an electrical fault automatic detection system, wherein 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 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 terminal of the analog current input unit with a current output channel of the measured object when the detection type of the measured object is determined to be 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;

a first detection module 303, configured to collect a first feedback current value corresponding to a first target current value based on the analog current input unit, and obtain 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 304 is configured to transmit a closing instruction to the measured object based on the communication unit, and output an input current detection result of the measured object based on the display unit.

In some possible embodiments, the first detection module comprises:

In some possible embodiments, the analog signal unit further comprises an analog current output unit, the apparatus further comprising:

In some possible embodiments, the analog signal unit further comprises an analog voltage input unit, the apparatus further comprising:

In some possible embodiments, the analog signal unit further comprises an analog voltage output unit, the apparatus further comprising:

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 comprises a digital signal output unit, the apparatus further comprising:

It will be clear to those skilled in the art that the technical solutions of the embodiments of the present application may be implemented by means of software and/or hardware. "Unit" and "module" in this specification refer to software and/or hardware capable of performing a specific function, either alone or in combination with other components, such as Field programmable gate arrays (Field-Programmable Gate Array, FPGAs), integrated circuits (Integrated Circuit, ICs), etc.

The processing units and/or modules of 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 of another electrical fault detection device based on hardware-in-loop according to an embodiment of the present application.

As shown in fig. 4, the hardware-in-loop based electrical fault detection device 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.

Wherein communication bus 402 may be used to facilitate communications among the various components described above.

The user interface 403 may comprise keys, and the optional user interface may also comprise a standard wired interface, a wireless interface, among others.

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

Wherein the processor 401 may include one or more processing cores. The processor 401 connects the various portions of the overall electronic device 400 using various interfaces and lines, performs various functions of the routing device 400 and processes 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. Alternatively, the processor 401 may be implemented in at least one hardware form of DSP, FPGA, PLA. The processor 401 may integrate one or a combination of several of a CPU, GPU, modem, etc. 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 will be appreciated that the modem may not be integrated into the processor 401 and may be implemented by a single chip.

The memory 405 may include RAM or ROM. Optionally, the memory 405 includes a non-transitory computer readable medium. 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 above-described various method embodiments, etc.; the storage data area may store data or the like referred to in the above respective method embodiments. The memory 405 may also optionally be at least one storage device located remotely from the aforementioned processor 401. As shown in fig. 3, an operating system, a network communication module, a user interface module, and a hardware-in-loop electrical fault detection application may be included in memory 405, which is one type of computer storage medium.

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

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:

In some possible embodiments, the analog signal unit further comprises an analog current output unit, the method further comprising:

In some possible embodiments, the analog signal unit further comprises an analog voltage input unit, the method further comprising:

In some possible embodiments, the analog signal unit further comprises an analog voltage output unit, the method further comprising:

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 method. The computer readable storage medium may include, among other things, any type of disk including floppy disks, optical disks, DVDs, CD-ROMs, micro-drives, and magneto-optical disks, ROM, RAM, EPROM, EEPROM, DRAM, VRAM, 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 foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, such as a division of units, merely a division of logic functions, and there may be additional divisions in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in whole or in part in the form of a software product stored in a memory, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be performed by hardware associated with a program that is stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.

The above are merely exemplary embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall 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 scope and spirit of the disclosure being indicated by the claims.

Claims

1. An electrical fault detection method based on hardware-in-the-loop, wherein the 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:

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

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;

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 tested object according to the first target current value and the first feedback current value;

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;

wherein the analog signal unit further comprises a digital signal input unit, the method further comprising:

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

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;

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 collecting 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 input digital signal detection result of the detected object is passing detection;

When the second feedback digital signal is not the second preset digital threshold value, determining that the detection result of the input digital signal of the detected object is abnormal;

wherein the analog signal unit further comprises a digital signal output unit, the method further comprising:

when the detection type of the detected object is determined to be output digital signals, the output end of the digital signal output unit is connected with a digital input channel of the detected 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 tested object based on the communication unit;

When the third feedback digital signal is the 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 tested object based on the communication unit; when the fourth feedback digital signal is the second preset digital threshold value, determining that the detection result of the output digital signal of the detected object is passing detection;

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

2. The method according to claim 1, wherein the 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 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 detection passing;

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:

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;

based on the communication unit, reading a second feedback current value which corresponds to the second target current value and is acquired by a current input channel of the measured object, and judging whether the difference value between the second target current value and the second feedback current value is in the first preset interval or not;

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 detection passing;

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.

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 tested object based on the communication unit so that a voltage output channel of the tested 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 passing detection;

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 detected object is abnormal;

and transmitting a closing instruction to the tested object based on the communication unit, and outputting an input voltage detection result of the tested object 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:

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

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;

based on the communication unit, reading a second feedback voltage value which corresponds to the second target voltage value and is acquired by a voltage input channel of the measured object, and judging whether the difference value between the second target voltage value and the second feedback voltage value is in the second preset interval or not;

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;

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

6. 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 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 tested object based on the communication unit so that a current output channel of the tested object outputs 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;

the first display module is used for 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;

wherein the analog signal unit further comprises a digital signal input unit, the apparatus further comprising:

the analog signal unit further includes a digital signal output unit, and the apparatus further includes:

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

the processor is connected with the memory;

the memory is used for storing executable program codes;

the processor runs a program corresponding to executable program code stored in the memory by reading the executable program code for performing the steps of the method according to any of claims 1-5.