A method and apparatus for detecting a control loop

Abstract

The application discloses a kind of detection method and device of control loop, it is related to control loop detection field.The detection method of the control loop includes: obtaining the connecting point between each device in control loop;The connecting point between each device is determined as the first detection point in intermediate position;After the power supply signal is connected between power supply end and ground end, the first detection voltage between the first detection point and ground end is obtained;According to the first detection voltage, the current detection point is determined in the each connecting point between the first detection point and ground end and power supply end and the first detection point, the current detection voltage between the current detection point and ground end is obtained;According to current detection voltage, determine the fault device in control loop.The technical scheme of the application can realize the automatic detection of control loop, improve the detection efficiency of control loop, and ensure the accuracy of control loop detection.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of control loop detection, in particular to a control loop detection method and device. BACKGROUND

[0002] The control loop is a key part of many industrial and electronic devices, which can monitor and adjust the operation of the system, and the stability and accuracy of the control loop are crucial to the performance and operation safety of the device, therefore, the control loop needs to be detected and maintained regularly, and with the expanding application range of the control loop, the demand for its detection is also growing.

[0003] The prior art scheme is based on traditional professional manual detection for maintenance, however, due to the complexity and diversity of the control loop, the traditional manual detection method has problems such as low efficiency, low accuracy and dependence on professional skills, therefore, there is an urgent need for a more efficient and reliable detection method to meet the growing demand for control loop detection. SUMMARY

[0004] The present application provides a control loop detection method and device to realize automatic detection of the control loop, improve the detection efficiency of the control loop and ensure the detection accuracy of the control loop.

[0005] The first aspect of the present application provides a control loop detection method, the control loop comprising a power supply end, a ground end and a plurality of devices electrically connected between the power supply end and the ground end, the control loop detection method comprising:

[0006] Obtaining the connection points between the devices in the control loop;

[0007] Determining the connection points between the devices in the middle position as the first detection points;

[0008] After connecting the power supply signal between the power supply end and the ground end, obtaining the first detection voltage between the first detection point and the ground end;

[0009] According to the first detection voltage, determining the current detection point among the first detection point and the ground end, and the connection points between the power supply end and the first detection point;

[0010] Obtaining the current detection voltage between the current detection point and the ground end;

[0011] According to the current detection voltage, determining the faulty device in the control loop.

[0012] Optionally, according to the first detection voltage, a current detection point is determined from the connection points between the first detection point and the ground terminal, and between the power supply terminal and the first detection point, comprising:

[0013] determining whether the first detection voltage is greater than a preset voltage;

[0014] if yes, determining the connection point next to the first detection point from the connection points between the first detection point and the ground terminal as the current detection point;

[0015] if no, determining the connection point next to the first detection point from the connection points between the power supply terminal and the first detection point as the current detection point.

[0016] Optionally, when the connection point next to the first detection point from the connection points between the first detection point and the ground terminal is determined as the current detection point, a faulty device in the control loop is determined according to the current detection voltage, comprising:

[0017] determining whether the current detection voltage is greater than a preset voltage;

[0018] if no, determining the device between the current detection point and a previous detection point as the faulty device.

[0019] Optionally, when the connection point next to the first detection point from the connection points between the first detection point and the ground terminal is determined as the current detection point, a faulty device in the control loop is determined according to the current detection voltage, further comprising:

[0020] if the current detection voltage is greater than the preset voltage, determining the connection point next to the current detection point from the connection points between the current detection point and the ground terminal as a next detection point, and returning to execute each step of acquiring the current detection voltage between the current detection point and the ground terminal, determining whether the current detection voltage is greater than a preset voltage, until a faulty device in the control loop is determined, or detection of each connection point between the current detection point and the ground terminal is completed.

[0021] Optionally, when the connection point next to the first detection point from the connection points between the power supply terminal and the first detection point is determined as the current detection point, a faulty device in the control loop is determined according to the current detection voltage, comprising:

[0022] determining whether the current detection voltage is greater than a preset voltage;

[0023] If yes, the device between the current detection point and the last detection point is determined as a faulty device.

[0024] Optionally, when the connection point adjacent to the first detection point among the connection points between the power supply end and the first detection point is determined as the current detection point, the faulty device in the control loop is determined according to the current detection voltage, and the method further comprises:

[0025] If the current detection voltage is less than or equal to the preset voltage, the connection point adjacent to the current detection point among the connection points between the power supply end and the current detection point is determined as a next detection point, and the steps of acquiring the current detection voltage between the power supply end and the current detection point, determining whether the current detection voltage is greater than a preset voltage are executed again until the faulty device in the control loop is determined, or the detection of the connection points between the power supply end and the current detection point is completed.

[0026] Optionally, the detection method of the control loop further comprises:

[0027] The control memory stores at least one of the first detection voltage, the current detection voltage, the detected connection point, and the faulty device.

[0028] Optionally, the detection method of the control loop further comprises:

[0029] The control display device displays at least one of the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and the faulty device.

[0030] Optionally, the detection method of the control loop further comprises:

[0031] When the faulty device in the control loop is determined, an alarm is given.

[0032] The second aspect of the present application provides a detection device of a control loop, the control loop comprising a power supply end, a ground end, and a plurality of devices electrically connected between the power supply end and the ground end, the detection device of the control loop comprising:

[0033] A connection point acquisition module is configured to acquire connection points between the devices in the control loop.

[0034] A first detection point determination module is configured to determine a connection point in an intermediate position among the connection points between the devices as a first detection point.

[0035] A first detection voltage obtaining module is configured to obtain a first detection voltage between the first detection point and the ground end after the power supply signal is connected between the power supply end and the ground end.

[0036] A current detection point determining module is configured to determine a current detection point from the first detection point and each of the connection points between the power supply end and the first detection point according to the first detection voltage.

[0037] A current detection voltage obtaining module is configured to obtain a current detection voltage between the current detection point and the ground end.

[0038] A faulty device determining module is configured to determine a faulty device in the control loop according to the current detection voltage.

[0039] The technical scheme provided by the present application can obtain the first detection voltage between the first detection point and the ground end after the power supply signal is connected between the power supply end and the ground end, and determine the current detection point from the first detection point and each of the connection points between the power supply end and the first detection point according to the first detection voltage, and obtain the current detection voltage between the current detection point and the ground end, so that the faulty device in the control loop can be determined according to the current detection voltage, thereby simplifying the detection mode of the control loop, improving the detection efficiency of the control loop, and ensuring the detection accuracy of the control loop without detecting all the connection points in the control loop.

[0040] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0042] Figure 1 is a schematic diagram of a control loop provided by an embodiment of the present application;

[0043] Figure 2is a flowchart of a detection method of a control loop provided by an embodiment of the present application;

[0044] Figure 3 is a flowchart of a detection method of a control loop provided by an embodiment of the present application;

[0045] Figure 4 is a flowchart of a detection method of a control loop provided by an embodiment of the present application;

[0046] Figure 5 is a flowchart of a detection method of a control loop provided by an embodiment of the present application;

[0047] Figure 6 is a structural diagram of a detection device of a control loop provided by an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0049] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0050] The control loop can include a power supply end, a ground end, and a plurality of devices electrically connected between the power supply end and the ground end. The devices can include, but are not limited to, at least one of a switching device, a resistor, an inductor, a capacitor, etc. Among them, the devices, the devices and the power supply end, and the devices and the ground end can be electrically connected to each other through wires, pads, pins, etc. At this time, the nodes between the devices electrically connected to each other are the connection points of the control loop. Generally, the more devices included in the control loop, the more connection points included in the control loop.

[0051] Figure 1 is a schematic diagram of a control circuit provided by an embodiment of the present application, as shown in Figure 1 The control circuit includes a power supply end V, a ground end G, and a plurality of devices K1, Q1, F1, S2, S1, K2, S4, and S7 electrically connected between the power supply end V and the ground end G, wherein K1 is a relay coil, Q1, F1, S2, S1, K2, S4, and S7 are all switches. At this time, the connection points between the devices in the control circuit include connection points A, B, C, E, F, H, I, J, and K. When there is no fault in the devices K1, Q1, F1, S2, S1, K2, S4, and S7 in the control circuit, and the devices K1, Q1, F1, S2, S1, K2, S4, and S7 are accurately connected to the connection points A, B, C, E, F, H, I, J, and K, a path can be formed between the power supply end V and the ground end G, so that the power supply signal applied between the power supply end V and the ground end G can charge each connection point A, B, C, E, F, H, I, J, and K, so that each connection point A, B, C, E, F, H, I, J, and K has a certain voltage with the ground end G. Therefore, by detecting the voltage between each connection point A, B, C, E, F, H, I, J, and K and the ground end G, the location of the faulty device in the control circuit can be determined, which can be tested by the detection method of the control circuit provided by the present application, and specific reference can be made to the following embodiments of the present application.

[0052] Embodiment one

[0053] Figure 2 is a flowchart of a control circuit detection method provided by an embodiment of the present application, which can accurately detect the faulty device in the control circuit. The method can be executed by a control circuit detection device, which can be realized by software and / or hardware, and generally can be integrated in an electronic device, which can be a terminal device or a server device. Accordingly, as shown in Figure 2 The control circuit detection method includes the following operations:

[0054] S101, obtaining the connection points between the devices in the control circuit.

[0055] Among them, the connection point can be the connection node between the devices in the control circuit.

[0056] Specifically, before detecting the control circuit, the devices in the control circuit and the connection mode between the devices can be determined according to the code name corresponding to the control circuit or the circuit structure schematic diagram of the control circuit, and based on this, the connection points between the devices can be found out, which is convenient for subsequent detection of the control circuit.

[0057] For example, the connection points include wires, and solder points or pins on a circuit board.

[0058] S102, determining a connection point in an intermediate position between the connection points between the devices as a first detection point.

[0059] The connection point in the intermediate position can be understood as a connection point in an intermediate position of the electrical connection in the control loop. After determining the first detection point in the intermediate position, the number of connection points between the first detection point and the power supply end can be the same as or slightly different from the number of connection points between the first detection point and the ground end. For example, as shown in the figure, the connection point F in the intermediate position of the control loop can be taken as the first detection point. Figure 1

[0060] S103, after connecting a power supply signal between the power supply end and the ground end, acquiring a first detection voltage between the first detection point and the ground end.

[0061] The connection of the power supply signal between the power supply end and the ground end can be that the power supply end is connected to a positive power supply signal and the ground end is connected to a negative power supply signal, so as to ensure that there is a certain potential difference between the power supply end and the ground end, thereby being able to charge each connection point, so that each connection point and the ground end should have a certain voltage, that is, when there is no faulty device in the control loop, the voltage between each connection point and the ground end should be greater than or equal to a preset voltage.

[0062] In an optional embodiment, the first detection voltage between the first detection point and the ground end can be acquired by a multimeter, for example, as shown in the figure, when the first detection voltage between the first detection point F and the ground end G is acquired by the multimeter, the black probe of the multimeter is in contact with the ground end G of the control loop, and the red probe is in contact with the first detection point. At this time, the voltage displayed by the multimeter is the first detection voltage. Figure 1

[0063] S104, according to the first detection voltage, determining a current detection point among the connection points between the first detection point and the ground end, and between the power supply end and the first detection point.

[0064] When there is a faulty device in the control loop, the electrical signal cannot continue to be transmitted through the faulty device, so that the voltage at each connection point near the ground end side of the faulty device is small, and the voltage at each connection point near the power supply end side of the faulty device is large. Therefore, by detecting the voltage between the connection point and the ground end, the approximate position of the faulty device can be determined according to the voltage between the connection point and the ground end.

[0065] ​​Specifically, the first detection point is a detection point in the middle position among the detection points of the control loop, so that by obtaining the first detection voltage between the first detection point and the ground end, it can be determined that the fault device is present between the first detection point and the ground end or between the power supply end and the first detection point, i.e., the position of the connection point connected with the fault device can be determined, and the connection point possibly connected with the fault device is determined as the current detection point. Thus, according to the first detection voltage, the connection point possibly connected with the fault device can be determined as the current detection point.

[0066] In an optional embodiment, according to the first detection voltage, the current detection point is determined among the connection points between the first detection point and the ground end and between the power supply end and the first detection point, including: judging whether the first detection voltage is greater than a preset voltage; if yes, the connection point next to the first detection point among the connection points between the first detection point and the ground end is determined as the current detection point; if no, the connection point next to the first detection point among the connection points between the power supply end and the first detection point is determined as the current detection point.

[0067] The preset voltage can be determined according to the voltage of the power supply signal connected between the power supply end and the ground end, i.e., the voltage of the power supply signal can be proportional to the preset voltage, or the preset voltage can also be determined according to the impedance of each device, and the preset voltages corresponding to different connection points can be the same or different, which can be designed according to actual needs, and the embodiments of the present application do not make specific limitations. In an exemplary embodiment, the preset voltage can be a fixed value, which can be 50V, for example.

[0068] Specifically, the first detection point is a connection point in the middle position among the devices in the control loop, when the voltage of the first detection point is greater than the preset voltage, it can be determined that the device between the power supply end and the first detection point can normally transmit signals, at this time, there is no fault device between the power supply end and the first detection point, and each connection point between the first detection point and the ground end can be detected, i.e., the current detection point can be determined among the connection points between the first detection point and the ground end, specifically, the connection point next to the first detection point among the connection points between the first detection point and the ground end can be determined as the current detection point, so that the approximate position of the fault device can be quickly determined, the range of the fault device is narrowed, the efficiency of fault diagnosis is improved, at the same time, it can prevent missing detection, ensure that the fault device is not missed, and improve the accuracy of fault diagnosis.

[0069] Correspondingly, when the first detection voltage is less than or equal to the preset voltage, it can be determined that there is a device that cannot normally transmit signals in the device between the power supply end and the first detection point. At this time, each connection point between the power supply end and the first detection point can be detected, that is, the current detection point can be determined in each connection point between the power supply end and the first detection point. Specifically, the connection point adjacent to the first detection point among the connection points between the power supply end and the first detection point can be determined as the current detection point, so that the approximate position of the faulty device can be quickly determined, the range of the faulty device is narrowed, the efficiency of fault diagnosis is improved, and at the same time, the faulty device can be prevented from being missed, and the accuracy of fault diagnosis is improved.

[0070] In an exemplary embodiment, continuing to refer to Figure 1 As shown, the connection point F is the connection point between the devices in the control loop, so that the first detection point is the connection point F. When the voltage of the connection point F is greater than the preset voltage, it indicates that there is no faulty device between the power supply end V and the first detection point F, and the faulty device may exist between the first detection point F and the ground end G. At this time, the connection point H adjacent to the first detection point F among the connection points between the first detection point F and the ground end G can be determined as the current detection point.

[0071] In another exemplary embodiment, continuing to refer to Figure 1 As shown, when the voltage of the connection point F is less than or equal to the preset voltage, it indicates that the faulty device may exist between the power supply end V and the first detection point F. At this time, the connection point E adjacent to the first detection point F among the connection points between the power supply end V and the first detection point F can be determined as the current detection point.

[0072] It should be noted that the above only exemplarily illustrates the specific implementation manner of determining the current detection point according to the first detection voltage.

[0073] S105, acquiring the current detection voltage between the current detection point and the ground end.

[0074] The current detection voltage between the current detection point and the ground end can be acquired by a multimeter, for example, Figure 1 As shown, when the current detection point is the connection point H, if the multimeter is used to acquire the current detection voltage between the current detection point H and the ground end G, the black pen of the multimeter is contacted with the ground end G of the control loop, and the red pen is contacted with the current detection point H. At this time, the voltage displayed by the multimeter is the current detection voltage. It should be noted that when the current detection point is other connection points, the red pen of the multimeter can be moved correspondingly, so as to realize the acquisition of the current detection voltage of each connection point.

[0075] S106, determining the faulty device in the control loop according to the current detection voltage.

[0076] The faulty device can be specifically understood as an electronic device with abnormal connection or fault in the control loop, so that the control loop cannot accurately control other systems or devices when the faulty device exists in the control loop, thereby affecting the operation safety and stability of the system or device.

[0077] Specifically, when a normal power signal is connected between the power terminal and the ground terminal, the voltage of each connection point in the control loop should reach the preset voltage, and if the voltage value of the connection point is less than or equal to the preset voltage value, it indicates that the power signal between the power terminal and the ground terminal cannot be accurately transmitted to the connection point, thereby determining the position of the faulty device in the control loop.

[0078] In an exemplary embodiment, when the current detection point is the connection point between the first detection point and the ground terminal, if the current detection voltage is less than or equal to the preset voltage, it indicates that the signal of the power terminal cannot be accurately transmitted to the current detection point, thereby determining that the faulty device is located between the first detection point and the current detection point, and at least part of the devices between the first detection point and the current detection point can be determined as the faulty device.

[0079] In another exemplary embodiment, when the current detection point is the connection point between the power terminal and the first detection point, if the current detection voltage is greater than the preset voltage, it indicates that the signal of the power terminal can be accurately transmitted to the current detection point, thereby determining that the faulty device is located between the current detection point and the first detection point, and at least part of the devices between the current detection point and the first detection point can be determined as the faulty device.

[0080] The embodiment of the present application determines the connection point between the devices in the control loop as the first detection point, and after connecting the power signal between the power terminal and the ground terminal, the first detection voltage between the first detection point and the ground terminal can be obtained, and according to the first detection voltage, the current detection point can be determined among the connection points between the first detection point and the ground terminal, and the power terminal and the first detection point, and the current detection voltage between the current detection point and the ground terminal can be obtained, so that the faulty device in the control loop can be determined according to the current detection voltage, thereby accurately determining the faulty device in the control loop by detecting only part of the connection points in the control loop, and simplifying the detection method of the control loop, improving the detection efficiency of the control loop, and ensuring the detection accuracy of the control loop.

[0081] Embodiment two

[0082] Figure 3is a flowchart of a detection method of a control loop provided by Embodiment Two of the present application. Based on the above-mentioned embodiments, the present embodiment makes a detailed description of the method for determining the current detection point and determining the faulty device in the control loop when the first detection voltage is greater than the preset voltage. Correspondingly, as shown in Figure 3 the detection method of the control loop of the present embodiment can include:

[0083] S201, acquiring the connection points between the devices in the control loop.

[0084] S202, determining the connection point in the middle position between the devices as the first detection point.

[0085] S203, after connecting the power supply signal between the power supply end and the ground end, acquiring the first detection voltage between the first detection point and the ground end.

[0086] S204, judging whether the first detection voltage is greater than the preset voltage. If yes, executing S205.

[0087] S205, determining the connection point next to the first detection point among the connection points between the first detection point and the ground end as the current detection point.

[0088] S206, acquiring the current detection voltage between the current detection point and the ground end.

[0089] S207, judging whether the current detection voltage is greater than the preset voltage. If yes, executing S208; if no, executing S209.

[0090] S208, determining the connection point next to the current detection point among the connection points between the current detection point and the ground end as the next detection point, and returning to execute S201-S207 until the faulty device in the control loop is determined, or the detection of the connection points between the current detection point and the ground end is completed.

[0091] S209, determining the device between the current detection point and the last detection point as the faulty device.

[0092] Specifically, after the power signal is connected between the power terminal and the ground terminal, the voltage at each connection point should be greater than the preset voltage. When the voltage at a connection point is less than or equal to the preset voltage, there may be a faulty device between the connection point and the power terminal that cannot transmit signals. Therefore, after obtaining the first detection voltage between the first detection point and the ground terminal, the first detection voltage can be compared with the preset voltage. If the first detection voltage is greater than the preset voltage, it can be determined that each device between the first detection point and the power terminal can normally transmit signals, and there is no faulty device between the first detection point and the power terminal. The voltage at each connection point between the first detection point and the ground terminal can be further detected. First, the connection point closest to the first detection point among the connection points between the first detection point and the ground terminal is determined as the current detection point, and the current detection voltage between the current detection point and the ground terminal is compared with the preset voltage. If the current detection voltage between the current detection point and the ground terminal is less than or equal to the preset voltage, it indicates that the device between the first detection point and the current detection point cannot accurately transmit signals, and the device between the current detection point and the first detection point can be determined as the faulty device. Conversely, if the current detection voltage between the current detection point and the ground terminal is greater than the preset voltage, it indicates that each device between the current detection point and the power terminal can accurately transmit signals, and there is no faulty device between the current detection point and the power terminal. At this time, the voltage at the other connection points between the current detection point and the ground terminal can be further detected, that is, the connection point closest to the current detection point among the connection points between the current detection point and the ground terminal is determined as the next detection point. When the voltage at the next detection point is detected, the next detection point is the current detection point. By obtaining the current detection voltage between the current detection point and the ground terminal at this time, when the current detection voltage is less than or equal to the preset voltage, it can be determined that the device between the current detection point and the previous detection point is the faulty device. When the current detection voltage is greater than the preset voltage, the connection point closest to the current detection point and located between the current detection point and the ground terminal can be determined as the next detection point, and the voltage at the next detection point can be detected. When there is no detection point between the current detection point and the ground terminal, it can be determined that there is no faulty device in the control loop, or when it is determined that the faulty device is between the current detection point and the previous detection point, the detection of the connection points can be stopped. In this way, by detecting the voltage between each detection point and the ground terminal, the position of the faulty device can be accurately and quickly determined, and the detection efficiency and accuracy can be improved.

[0093] In an exemplary embodiment, continuing to refer to Figure 1As shown, if the connection point F in the control loop is determined as the first detection point, the first detection voltage between the connection point F and the ground terminal can be acquired, and when the first detection voltage between the connection point F and the ground terminal G is greater than the preset voltage, the connection point H can be continuously determined as the current detection point, and the current detection voltage between the connection point H and the ground terminal G can be acquired; if the current detection voltage between the connection point H and the ground terminal G is less than or equal to the preset voltage, the faulty device is located between the connection point H and the connection point F, that is, the device K1 can be directly determined as the faulty device; and when the current detection voltage between the connection point H and the ground terminal G is greater than the preset voltage, the current detection voltage between the connection point I and the ground terminal G can be continuously acquired; if the current detection voltage between the connection point I and the ground terminal G is less than or equal to the preset voltage, it can be determined that the faulty device is located between the connection point I and the connection point H, that is, the device Q1 can be determined as the faulty device; and when the current detection voltage between the connection point I and the ground terminal G is greater than the preset voltage, the current detection voltage between the connection point J and the ground terminal G can be continuously acquired; if the current detection voltage between the connection point J and the ground terminal G is less than or equal to the preset voltage, the device between the connection point J and the connection point I can be determined as the faulty device, that is, the device F1 is the faulty device; and when the current detection voltage between the connection point J and the ground terminal G is greater than the preset voltage, the current detection voltage between the connection point K and the ground terminal can be continuously acquired, or it can be directly determined that there is no faulty device in the control loop.

[0094] In this embodiment, when the voltage between the first detection point and the ground terminal is greater than the preset voltage, the voltage between each connection point between the first detection point and the ground terminal and the ground terminal is detected in sequence, so that whether there is a faulty device in the control loop can be quickly and accurately determined, and when there is a faulty device in the control loop, the position of the faulty device can be accurately determined, and then when there is a faulty device in the control loop, the faulty device in the control loop can be timely repaired, maintained or replaced.

[0095] Embodiment Three

[0096] Figure 4 It is a flowchart of a detection method of a control loop provided by the third embodiment of the present application, and the method for determining the current detection point and the faulty device in the control loop when the first detection voltage is less than or equal to the preset voltage is described in detail based on the above-mentioned embodiments, and accordingly, as shown in the figure, Figure 4 The method of the present embodiment can include the following steps:

[0097] S301, acquiring the connection points between the devices in the control loop.

[0098] S302, determining the connection point in the middle position between the devices as the first detection point.

[0099] S303, after the power signal is connected between the power terminal and the ground terminal, a first detection voltage between the first detection point and the ground terminal is obtained.

[0100] S304, it is judged whether the first detection voltage is greater than a preset voltage, if not, S305 is executed.

[0101] S305, a connection point adjacent to the first detection point among connection points between the power terminal and the first detection point is determined as a current detection point.

[0102] S306, a current detection voltage between the current detection point and the ground terminal is obtained.

[0103] S307, it is judged whether the current detection voltage is greater than the preset voltage, if not, S308 is executed, if yes, S309 is executed.

[0104] S308, a connection point adjacent to the current detection point among connection points between the current detection point and the power terminal is determined as a next detection point, and each step of S301-S307 is executed until a faulty device in the control loop is determined, or detection of each connection point between the power terminal and the current detection point is completed.

[0105] S309, a device between the current detection point and a previous detection point is determined as the faulty device.

[0106] Specifically, after the power signal is connected between the power terminal and the ground terminal, the voltage at each connection point should be greater than the preset voltage. When the voltage at a connection point is less than or equal to the preset voltage, there is a faulty device between the connection point and the power terminal that cannot transmit signals. Therefore, after the first detection voltage between the first detection point and the ground terminal is obtained, the first detection voltage can be compared with the preset voltage. If the first detection voltage is less than or equal to the preset voltage, it is determined that there is a faulty device between the first detection point and the power terminal that cannot transmit signals, and the voltage at each connection point between the first detection point and the power terminal can be further detected. First, the connection point closest to the first detection point among the connection points between the first detection point and the power terminal is determined as the current detection point, and the current detection voltage between the current detection point and the ground terminal is compared with the preset voltage. If the current detection voltage between the current detection point and the ground terminal is greater than the preset voltage, it indicates that the device between the first detection point and the current detection point cannot accurately transmit signals, and the device between the current detection point and the first detection point is determined as the faulty device. Conversely, if the current detection voltage between the current detection point and the ground terminal is less than or equal to the preset voltage, it indicates that there is a faulty device between the current detection point and the power terminal that cannot transmit signals. At this time, the voltage at the other connection points between the current detection point and the power terminal can be further detected, that is, the connection point closest to the current detection point among the connection points between the current detection point and the power terminal is determined as the next detection point. When the voltage at the next detection point is detected, the next detection point is the current detection point. By obtaining the current detection voltage between the current detection point and the ground terminal at this time, if the current detection voltage is greater than the preset voltage, it is determined that the device between the current detection point and the previous detection point is the faulty device. If the current detection voltage is less than or equal to the preset voltage, the connection point closest to the current detection point and located between the current detection point and the power terminal is determined as the next detection point, and the voltage at the next detection point is detected. When there is no detection point between the current detection point and the power terminal, it is determined that there is no faulty device in the control loop, and the fault in the control loop can be that the power terminal fails to correctly connect the power signal, or the detection of the connection points is stopped when it is determined that the faulty device is between the current detection point and the previous detection point. In this way, by detecting the voltage between each detection point and the power terminal, the position of the faulty device can be accurately and quickly determined, and the detection efficiency and accuracy are improved.

[0107] In an example embodiment, continuing to refer to Figure 1As shown, if the connection point F in the control loop is determined as the first detection point, the first detection voltage between the connection point F and the ground terminal G can be acquired, and when the first detection voltage between the connection point F and the ground terminal G is less than or equal to the preset voltage, the connection point E can be continuously determined as the current detection point, and the current detection voltage between the connection point E and the ground terminal can be acquired; if the current detection voltage between the connection point E and the ground terminal G is greater than the preset voltage, the faulty device is located between the connection point E and the connection point F, that is, the device S1 can be directly determined as the faulty device; and when the current detection voltage between the connection point E and the ground terminal is less than or equal to the preset voltage, the current detection voltage between the connection point C and the ground terminal G can be continuously acquired; if the current detection voltage between the connection point C and the ground terminal G is greater than the preset voltage, it can be determined that the faulty device is located between the connection point C and the connection E, that is, the device K2 can be determined as the faulty device; and when the current detection voltage between the connection point C and the ground terminal G is less than or equal to the preset voltage, the current detection voltage between the connection point B and the ground terminal G can be continuously acquired; if the current detection voltage between the connection point B and the ground terminal G is greater than the preset voltage, it can be determined that the device between the connection point B and the connection point C is the faulty device, that is, the device S4 is the faulty device; and when the current detection voltage between the connection point B and the ground terminal G is less than or equal to the preset voltage, the current detection voltage between the connection point A and the ground terminal G can be continuously acquired, or it can be directly determined that there is no faulty device in the control loop, and the fault in the control loop can be that the power supply terminal V fails to correctly access the power supply signal.

[0108] In the embodiment, when the voltage between the first detection point and the ground terminal is less than or equal to the preset voltage, the voltage between each connection point between the first detection point and the power supply terminal and the ground terminal is detected in sequence, so that whether there is a faulty device in the control loop can be quickly and accurately determined, and when there is a faulty device in the control loop, the position of the faulty device can be accurately determined, and then when there is a faulty device in the control loop, the faulty device in the control loop can be timely repaired, maintained or replaced.

[0109] Embodiment Four

[0110] Figure 5 It is a flowchart of a detection method of a control loop provided by the embodiment four, and the storage method, display method and reminding method of the detection method of the control loop are described in detail in the embodiment, and correspondingly, as shown in the embodiment, the method of the embodiment can include: Figure 5

[0111] S401, acquiring the connection points between devices in the control loop.

[0112] ​S402, determine a connection point in the middle of the connection points between devices as a first detection point.

[0113] S403, after connecting a power signal between the power terminal and the ground terminal, acquire a first detection voltage between the first detection point and the ground terminal.

[0114] S404, according to the first detection voltage, determine a current detection point from the first detection point and the ground terminal, and each connection point between the power terminal and the first detection point.

[0115] S405, acquire a current detection voltage between the current detection point and the ground terminal.

[0116] S406, according to the current detection voltage, determine a faulty device in the control loop.

[0117] S407, control the memory to store at least one of the first detection voltage, the current detection voltage, the detected connection point, and the faulty device.

[0118] The memory includes EEPROM (Electrically Erasable Programmable Read-Only Memory), RAM (Random Access Memory), or other types of storage devices, for storing at least one of the first detection voltage, the current detection voltage, the detected connection point, and the faulty device. By storing at least one of the first detection voltage, the current detection voltage, the detected connection point, and the faulty device, it is beneficial to record and track the voltage detection results of each connection point and the faulty device information, so that subsequent data analysis and fault diagnosis can be performed.

[0119] In addition, by storing the measurement results of the first detection voltage and the current detection voltage, and the detected connection point, historical data can be established to ensure that the operator can review the records and will not miss or misjudge the connection points, helping the operator to discover potential problems in time, providing important reference for subsequent maintenance work, and also facilitating subsequent tracing and analysis, which helps to improve the stability and reliability of the control loop. By storing the faulty device, a basis for fault diagnosis is provided, helping the operator to quickly and accurately locate and solve problems, improving maintenance efficiency.

[0120] S408, control the display device to display at least one of the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and the faulty device.

[0121] The display device includes a display screen, an indicator light, etc. Specifically, the display screen can display the position information of the detected connection point, the current detection point, and the faulty device, and can also display the numerical value of the first detection voltage and the current detection voltage. The indicator light can display the judgment result of whether the first detection voltage or the current detection voltage is greater than the preset voltage. For example, when the first detection voltage or the current detection voltage is greater than the preset voltage, the indicator light is green; when the first detection voltage or the current detection voltage is less than or equal to the preset voltage, the indicator light is red.

[0122] In this way, by controlling the display device to display at least one of the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and the faulty device, the detection information can be visually displayed, so that the operator can intuitively understand the state of the control loop and the detection result, which helps the operator to quickly identify potential problems and take corresponding measures for maintenance or adjustment, thereby improving the reliability and maintenance efficiency of the control loop.

[0123] S409, when it is determined that there is a faulty device in the control loop, a warning is given.

[0124] The warning includes a sound alarm, a visual prompt, a text prompt, and a remote notification, etc. Specifically, when it is determined that there is a faulty device in the control loop, a sound alarm can be used to attract the attention of the operator and indicate that there is a fault, for example, a buzzer or an alarm can emit a continuous or intermittent sound alarm; when it is determined that there is a faulty device in the control loop, a visual indication can also be used to attract the attention of the operator, for example, a flashing warning light or an LED indicator can flash or change color on the display device; when it is determined that there is a faulty device in the control loop, a text prompt can also be used to help the operator quickly identify the problem, for example, a text prompt of the fault information can be displayed on the display screen or the digital panel; when it is determined that there is a faulty device in the control loop, a remote notification can also be used to inform the operator of the fault condition, for example, through a system connected to the network, an email, a short message or other remote notification. Timely alarm and display of the faulty device can help the operator to quickly respond to the fault condition, thereby reducing the production line downtime, improving the production efficiency, and further improving the reliability and maintenance efficiency of the control loop.

[0125] Embodiment five

[0126] Figure 6 is a structural schematic diagram of a detection device of a control loop provided by the embodiment five of the present application. The device can realize the detection method of the control loop provided by the embodiment of the present application, and can be realized by software and / or hardware, and generally can be integrated in an electronic device. The electronic device can be a terminal device, or a server device. As shown in the figure, the device includes a detection module 1, a display module 2, a warning module 3, and a communication module 4. Figure 6As shown, the apparatus comprises a connection point acquisition module 501, a first detection point determination module 502, a first detection voltage acquisition module 503, a current detection point determination module 504, a current detection voltage acquisition module 505 and a faulty device determination module 506. The apparatus has the following specific structure:

[0127] The connection point acquisition module 501 is configured to acquire the connection points between devices in the control loop.

[0128] The first detection point determination module 502 is configured to determine the connection point in the middle position between devices as the first detection point.

[0129] The first detection voltage acquisition module 503 is configured to acquire the first detection voltage between the first detection point and the ground end after connecting the power supply signal between the power supply end and the ground end.

[0130] The current detection point determination module 504 is configured to determine the current detection point from the first detection point and the ground end and the connection points between the power supply end and the first detection point according to the first detection voltage.

[0131] The current detection voltage acquisition module 505 is configured to acquire the current detection voltage between the current detection point and the ground end.

[0132] The faulty device determination module 506 is configured to determine the faulty device in the control loop according to the current detection voltage.

[0133] In an optional embodiment of the present application, the current detection point determination module 504 can be further configured to: determine whether the first detection voltage is greater than a preset voltage; if yes, determine the connection point adjacent to the first detection point from the connection points between the first detection point and the ground end as the current detection point; and if no, determine the connection point adjacent to the first detection point from the connection points between the power supply end and the first detection point as the current detection point.

[0134] In an optional embodiment of the present application, the faulty device determination module 506 can be further configured to: when the connection point adjacent to the first detection point from the connection points between the first detection point and the ground end is determined as the current detection point, determine whether the current detection voltage is greater than a preset voltage; and if no, determine the device between the current detection point and the previous detection point as the faulty device.

[0135] In an optional embodiment of the present application, the fault device determining module 506 can be further configured to: when the connection point next to the first detection point among the connection points between the first detection point and the ground terminal is determined as the current detection point, if the current detection voltage is greater than the preset voltage, then the connection point next to the current detection point among the connection points between the current detection point and the ground terminal is determined as the next detection point, and the steps of obtaining the current detection voltage between the current detection point and the ground terminal, and determining whether the current detection voltage is greater than the preset voltage are executed again until the fault device in the control loop is determined or the detection of the connection points between the current detection point and the ground terminal is completed.

[0136] In an optional embodiment of the present application, the fault device determining module 506 can be further configured to: when the connection point next to the first detection point among the connection points between the power supply terminal and the first detection point is determined as the current detection point, determining whether the current detection voltage is greater than the preset voltage; if yes, then the device between the current detection point and the previous detection point is determined as the fault device.

[0137] In an optional embodiment of the present application, the fault device determining module 506 can be further configured to: when the connection point next to the first detection point among the connection points between the power supply terminal and the first detection point is determined as the current detection point, if the current detection voltage is less than or equal to the preset voltage, then the connection point next to the current detection point among the connection points between the current detection point and the power supply terminal is determined as the next detection point, and the steps of obtaining the current detection voltage between the power supply terminal and the current detection point, and determining whether the current detection voltage is greater than the preset voltage are executed again until the fault device in the control loop is determined or the detection of the connection points between the power supply terminal and the current detection point is completed.

[0138] In an optional embodiment of the present application, the detection device of the control loop can be further configured to: control the storage device to store at least one of the first detection voltage, the current detection voltage, the detected connection point, and the fault device.

[0139] In an optional embodiment of the present application, the detection device of the control loop can be further configured to: control the display device to display at least one of the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and the fault device.

[0140] In an optional embodiment of the present application, the detection device of the control loop can be further configured to: when it is determined that there is a fault device in the control loop, giving an alarm.

[0141] The detection device of the control loop can execute the control loop detection method provided by any embodiment of the present application, and has the function modules and beneficial effects corresponding to the execution method. The technical details not described in detail in the present embodiment can be referred to the control loop detection method provided by any embodiment of the present application.

[0142] Since the detection device of the control loop described above is a device that can execute the control loop detection method in the embodiments of the present application, based on the control loop detection method described in the embodiments of the present application, those skilled in the art can understand the specific implementation of the control loop detection device of the present embodiment and its various forms, so how the control loop detection device implements the control loop detection method in the embodiments of the present application will not be described in detail here. As long as the device used to implement the control loop detection method in the embodiments of the present application is implemented by those skilled in the art, it belongs to the scope of protection of the present application.

[0143] It should be understood that various forms of processes shown above can be reordered, added or deleted steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions disclosed in the present application can be achieved, which is not limited herein.

[0144] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A detection method of a control loop, characterized by, The control circuit comprises a power terminal, a ground terminal, and a plurality of devices electrically connected between the power terminal and the ground terminal, and a detection method of the control circuit comprises: obtaining connection points between the devices in the control circuit; determining a connection point in an intermediate position between the devices as a first detection point; after a power signal is connected between the power terminal and the ground terminal, obtaining a first detection voltage between the first detection point and the ground terminal; determining a current detection point between the first detection point and the ground terminal and between the power terminal and the first detection point according to the first detection voltage, comprising: judging whether the first detection voltage is greater than a preset voltage; if yes, determining the connection point adjacent to the first detection point among the connection points between the first detection point and the ground terminal as the current detection point; if no, determining the connection point adjacent to the first detection point among the connection points between the power terminal and the first detection point as the current detection point; obtaining a current detection voltage between the current detection point and the ground terminal; when the connection point adjacent to the first detection point among the connection points between the first detection point and the ground terminal is determined as the current detection point, determining a faulty device in the control circuit according to the current detection voltage, comprising: judging whether the current detection voltage is greater than a preset voltage; if no, determining the device between the current detection point and a previous detection point as the faulty device; when the connection point adjacent to the first detection point among the connection points between the power terminal and the first detection point is determined as the current detection point, determining a faulty device in the control circuit according to the current detection voltage, comprising: judging whether the current detection voltage is greater than a preset voltage; if yes, determining the device between the current detection point and a previous detection point as the faulty device.

2. The detection method of a control loop according to claim 1, characterized in that, when the connection point adjacent to the first detection point among the connection points between the first detection point and the ground terminal is determined as the current detection point, determining a faulty device in the control circuit according to the current detection voltage, further comprising: if the current detection voltage is greater than the preset voltage, determining the connection point adjacent to the current detection point among the connection points between the current detection point and the ground terminal as a next detection point, and returning to execute the steps of obtaining the current detection voltage between the current detection point and the ground terminal, judging whether the current detection voltage is greater than a preset voltage, until a faulty device in the control circuit is determined, or the detection of the connection points between the current detection point and the ground terminal is completed.

3. The detection method of a control loop according to claim 1, characterized in that, when the connection point adjacent to the first detection point among the connection points between the power terminal and the first detection point is determined as the current detection point, determining a faulty device in the control circuit according to the current detection voltage, further comprising: If the current detection voltage is less than or equal to the preset voltage, the connection point next to the current detection point among the connection points between the current detection point and the power supply end is determined as a next detection point, and the steps of obtaining the current detection voltage between the power supply end and the current detection point, and judging whether the current detection voltage is greater than a preset voltage are performed again until the faulty device in the control loop is determined or the detection of the connection points between the power supply end and the current detection point is completed.

4. The detection method of a control loop according to claim 1, characterized in that, Further comprising: The control memory stores at least one of the first detection voltage, the current detection voltage, the detected connection point, and the faulty device.

5. The detection method of a control loop according to claim 1, characterized in that, Further comprising: The control display device displays at least one of the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and the faulty device.

6. The detection method of a control loop according to claim 1, characterized in that, Further comprising: An alarm is given when the faulty device in the control loop is determined.

7. A detection device for a control loop, characterized in that The control loop comprises a power supply end, a ground end, and a plurality of devices electrically connected between the power supply end and the ground end, and the detection device of the control loop comprises: A connection point acquisition module for acquiring the connection points between the devices in the control loop; A first detection point determination module for determining the connection points between the devices as the first detection points; A first detection voltage acquisition module for acquiring the first detection voltage between the first detection point and the ground end after a power supply signal is connected between the power supply end and the ground end; A current detection point determination module for determining the current detection point according to the first detection voltage among the connection points between the first detection point and the ground end and between the power supply end and the first detection point; and determining the current detection point according to the first detection voltage among the connection points between the first detection point and the ground end and between the power supply end and the first detection point, comprising: judging whether the first detection voltage is greater than a preset voltage; if yes, determining the connection point next to the first detection point among the connection points between the first detection point and the ground end as the current detection point; and if no, determining the connection point next to the first detection point among the connection points between the power supply end and the first detection point as the current detection point; A current detection voltage acquisition module for acquiring the current detection voltage between the current detection point and the ground end; and The fault device determination module is configured to determine a fault device in the control loop according to the current detection voltage; and the determination of the fault device in the control loop according to the current detection voltage comprises: when the connection point next to the first detection point among the connection points between the first detection point and the ground end is determined as the current detection point, determining whether the current detection voltage is greater than a preset voltage; if not, determining the device between the current detection point and a previous detection point as the fault device; when the connection point next to the first detection point among the connection points between the power supply end and the first detection point is determined as the current detection point, determining whether the current detection voltage is greater than a preset voltage; if yes, determining the device between the current detection point and a previous detection point as the fault device.

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