Detection method and device for control loop

Abstract

The invention discloses a control loop detection method and device, and relates to the field of control loop detection. The detection method of the control loop comprises the following steps: acquiring connection points between devices in the control loop; determining the connection point in the middle position among the connection points among the devices as a first detection point; after a power supply signal is connected between the power supply end and the grounding end, obtaining a first detection voltage between the first detection point and the grounding end; according to the first detection voltage, determining a current detection point in connection points between the first detection point and the grounding end and between the power supply end and the first detection point, and obtaining a current detection voltage between the current detection point and the grounding end; and determining a fault device in the control loop according to the current detection voltage. According to the technical scheme, automatic detection of the control loop can be realized, the detection efficiency of the control loop is improved, and the detection accuracy of the control loop is ensured.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of control loop detection, and in particular to a control loop detection method and device. Background Art

[0002] Control loops are a key part of many industrial and electronic equipment. They can monitor and regulate the operation of the system. The stability and accuracy of the control loop are crucial to the performance and operational safety of the equipment. Therefore, control loops need to be regularly inspected and maintained. As the application scope of control loops continues to expand, the demand for their inspection is also growing.

[0003] The existing technical solution is based on traditional manual inspection by professionals for maintenance. However, due to the complexity and diversity of control loops, traditional manual inspection methods have problems such as low efficiency, low accuracy, and dependence on professional skills. Therefore, there is an urgent need for a more efficient and reliable inspection method to meet the growing demand for control loop inspection. Summary of the invention

[0004] The present invention 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] A first aspect of the present invention provides a control loop detection method, wherein the control loop includes a power supply terminal, a ground terminal, and a plurality of devices electrically connected between the power supply terminal and the ground terminal, and the control loop detection method includes:

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

[0007] Determine the connection point at the middle position among the connection points between the devices as the first detection point;

[0008] After a 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;

[0009] Determine a current detection point among the connection points 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;

[0010] Acquiring a current detection voltage between the current detection point and the ground terminal;

[0011] A faulty device in the control loop is determined according to the current detection voltage.

[0012] Optionally, determining a current detection point from each of the connection points 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 includes:

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

[0014] If yes, determining the connection point between the first detection point and the ground terminal, the connection point that is adjacent to the first detection point, as the current detection point;

[0015] If not, the connection point between the power supply terminal and the first detection point and adjacent to the first detection point is determined as the current detection point.

[0016] Optionally, when the connection point between the first detection point and the ground terminal that is adjacent to the first detection point is determined as the current detection point, determining a faulty device in the control loop according to the current detection voltage includes:

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

[0018] If not, the device between the current detection point and the last detection point is determined as a faulty device.

[0019] Optionally, when the connection point between the first detection point and the ground terminal that is adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop according to the current detection voltage further includes:

[0020] If the current detection voltage is greater than the preset voltage, the connection point between the current detection point and the ground terminal that is adjacent to the current detection point is determined as the next detection point, and the process returns to execute 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, until the faulty device in the control loop is determined, or the detection of each connection point between the current detection point and the ground terminal is completed.

[0021] Optionally, when the connection point between the power supply terminal and the first detection point and adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop according to the current detection voltage includes:

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

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

[0024] Optionally, when the connection point between the power supply terminal and the first detection point and adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop according to the current detection voltage further includes:

[0025] If the current detection voltage is less than or equal to the preset voltage, the connection point between the current detection point and the power supply end and adjacent to the current detection point is determined as the next detection point, and the process returns to execute the steps of obtaining the current detection voltage between the power supply end and the current detection point and determining whether the current detection voltage is greater than the preset voltage, until the faulty device in the control loop is determined, or the detection of each connection point between the power supply end and the current detection point is completed.

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

[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 control loop detection method further includes:

[0029] The display device is controlled 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.

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

[0031] When it is determined that there is a faulty component in the control loop, a warning reminder is issued.

[0032] A second aspect of the present invention provides a detection device for a control loop, wherein the control loop includes a power supply terminal, a ground terminal, and a plurality of devices electrically connected between the power supply terminal and the ground terminal, and the detection device for the control loop includes:

[0033] A connection point acquisition module, used to acquire connection points between the devices in the control loop;

[0034] A first detection point determination module, used to determine the connection point at the middle position among the connection points between the components as a first detection point;

[0035] A first detection voltage acquisition module, configured to acquire a first detection voltage between the first detection point and the ground terminal after a power signal is connected between the power terminal and the ground terminal;

[0036] a current detection point determination module, configured to determine a current detection point among the connection points 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;

[0037] A current detection voltage acquisition module, used to acquire a current detection voltage between the current detection point and the ground terminal;

[0038] The faulty component determination module is used to determine the faulty component in the control loop according to the current detection voltage.

[0039] The technical solution provided by the present invention obtains the connection points between the devices in the control loop, and determines the connection point in the middle position among the connection points between the devices as the first detection point, so that after the power supply signal is connected between the power supply 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 is determined among the connection points between the first detection point and the ground terminal, and between the power supply terminal and the first detection point, and the current detection voltage between the current detection point and the ground terminal is obtained, so that the faulty device in the control loop can be determined according to the current detection voltage, so that there is no need to detect all the connection points in the control loop, and only some of the connection points in the control loop need to be detected to accurately determine the faulty device in the control loop, and then, on the premise of being able to realize automatic detection of the control loop, the detection method of the control loop is simplified, the detection efficiency of the control loop is improved, and the detection accuracy of the control loop is guaranteed.

[0040] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0043] Figure 2It is a flow chart of a control loop detection method provided in Embodiment 1 of the present invention;

[0044] Figure 3 It is a flow chart of a control loop detection method provided by Embodiment 2 of the present invention;

[0045] Figure 4 It is a flow chart of a control loop detection method provided by Embodiment 3 of the present invention;

[0046] Figure 5 It is a flow chart of a control loop detection method provided by Embodiment 4 of the present invention;

[0047] Figure 6 It is a structural schematic diagram of a detection device for a control loop provided in Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

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

[0050] The control loop may include a power supply terminal, a ground terminal, and a plurality of devices electrically connected between the power supply terminal and the ground terminal. The devices may include but are not limited to at least one of a switch device, a resistor, an inductor, a capacitor, etc. Among them, the devices, the devices and the power supply terminal, and the devices and the ground terminal may 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 loop provided by an embodiment of the present invention, such as Figure 1 As shown, the control loop includes a power supply terminal V, a ground terminal G, and a plurality of devices K1, Q1, F1, S2, S1, K2, S4, and S7 electrically connected between the power supply terminal V and the ground terminal G, wherein K1 is a relay coil, and Q1, F1, S2, S1, K2, S4, and S7 are switches. At this time, the connection points between the devices in the control loop include connection points A, B, C, E, F, H, I, J, and K. When there is no fault in the components K1, Q1, F1, S2, S1, K2, S4, and S7 in the control loop, and the components 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 terminal V and the ground terminal G, so that the power signal applied between the power supply terminal V and the ground terminal G can charge the connection points A, B, C, E, F, H, I, J, and K, so that there is a certain voltage between the connection points A, B, C, E, F, H, I, J, and K and the ground terminal G. Therefore, by detecting the voltage between the connection points A, B, C, E, F, H, I, J, and K and the ground terminal G, the position of the faulty component in the control loop can be determined, and the control loop detection method provided by the present invention can be used for testing, and specific reference is made to the following embodiments of the present invention.

[0052] Embodiment 1

[0053] Figure 2 This is a flow chart of a control loop detection method provided by the first embodiment of the present invention. This embodiment can accurately detect faulty components in the control loop. The method can be executed by a control loop detection device. The device can be implemented by software and / or hardware and can generally be integrated in an electronic device. The electronic device can be a terminal device or a server device. Figure 2 As shown, the detection method of the control loop includes the following operations:

[0054] S101. Obtain connection points between components in a control loop.

[0055] The connection point may be a connection node between devices in the control loop.

[0056] Specifically, before detecting the control loop, the devices present in the control loop and the connection methods between the devices can be determined according to the code name corresponding to the control loop or the circuit structure diagram of the control loop, and the connection points between the devices can be found based on this to facilitate subsequent detection of the control loop.

[0057] Exemplary connection points include wires, and solder joints or pins on a circuit board.

[0058] S102: Determine a connection point at an intermediate position among the connection points between the components as a first detection point.

[0059] The connection point at the middle position can be specifically understood as a connection point at the middle position of the electrical connection in the control loop. After the connection point at the middle position is determined as the first detection point, the number of connection points between the first detection point and the power supply terminal can be the same as or slightly different from the number of connection points between the first detection point and the ground terminal. For example, Figure 1 As shown, the connection point in the middle of the control loop is the connection point F. At this time, the connection point F can be used as the first detection point.

[0060] S103 , after a 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.

[0061] Among them, connecting the power supply signal between the power supply terminal and the ground terminal can specifically be passing a positive power supply signal into the power supply terminal and a negative power supply signal into the ground terminal to ensure that there is a certain potential difference between the power supply terminal and the ground terminal, so that each connection point can be charged, so that there should be a certain voltage between each connection point and the ground terminal, that is, when there is no faulty device in the control loop, the voltage between each connection point and the ground terminal should be greater than or equal to the preset voltage.

[0062] In an optional embodiment, the first detection voltage between the first detection point and the ground terminal can be obtained by a multimeter, for example, Figure 1 As shown, when a multimeter is used to obtain the first detection voltage between the first detection point F and the ground terminal G, the black test lead of the multimeter can be contacted with the ground terminal G of the control circuit, and the red test lead can be contacted with the first detection point. At this time, the voltage displayed by the multimeter is the first detection voltage.

[0063] S104: According to the first detection voltage, determine a current detection point from connection points between the first detection point and the ground terminal, and between the power terminal and the first detection point.

[0064] Among them, since when there is a faulty device in the control loop, the electrical signal will not be able to continue to be transmitted through the faulty device, so that the voltage at each connection point of the faulty device close to the ground end is smaller, while the voltage at each connection point of the faulty device close to the power supply end is larger. Therefore, the voltage between the connection point and the ground end is detected to determine the approximate position of the faulty device based on the voltage between the connection point and the ground end.

[0065] Specifically, the first detection point is a detection point in the middle of the detection points of the control loop, so that by obtaining the first detection voltage between the first detection point and the ground terminal, it can be determined whether the faulty device exists between the first detection point and the ground terminal, or between the power supply terminal and the first detection point, that is, the position of the connection point connected to the faulty device can be determined accordingly, and the connection point that may be connected to the faulty device can be determined as the current detection point. Therefore, according to the first detection voltage, the connection point that may be connected to the faulty device can be determined as the current detection point.

[0066] In an optional embodiment, based on the first detection voltage, a current detection point is determined among the connection points between the first detection point and the ground terminal, and between the power supply terminal and the first detection point, including: judging whether the first detection voltage is greater than a preset voltage; if so, 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 not, determining the connection point adjacent to the first detection point among the connection points between the power supply terminal and the first detection point as the current detection point.

[0067] The preset voltage can be determined according to the voltage of the power signal connected between the power terminal and the ground terminal, that is, the voltage of the power 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 embodiment of the present invention does not specifically limit this. In an exemplary embodiment, the preset voltage can be a fixed value, and the fixed value can be 50V, for example.

[0068] Specifically, the first detection point serves as a connection point in the middle position between 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 transmit signals normally. At this time, there is no faulty device between the power supply end and the first detection point. The connection points between the first detection point and the ground end can be further detected, that is, the current detection point can be determined among the connection points between the first detection point and the ground end. Specifically, the connection point adjacent 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 faulty device can be quickly determined, the scope of the faulty device can be narrowed, and the efficiency of fault diagnosis can be improved. At the same time, it can prevent missed detection, ensure that the faulty 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 between the power supply end and the first detection point that cannot transmit signals normally. At this time, each connection point between the power supply end and the first detection point can be further detected, that is, the current detection point can be determined among the connection points between the power supply end and the first detection point. Specifically, the connection point between the power supply end and the first detection point that is adjacent to the first detection point can be determined as the current detection point, so that the approximate location of the faulty device can be quickly determined, the scope of the faulty device can be narrowed, and the efficiency of fault diagnosis can be improved. At the same time, it can prevent missed detection, ensure that the faulty device is not missed, and improve the accuracy of fault diagnosis.

[0070] In an exemplary embodiment, see Figure 1 As shown, the connection point F is used as a connection point in the middle between the components 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 means that there is no faulty component between the power supply terminal V and the first detection point F, and the faulty component may exist between the first detection point F and the ground terminal G. At this time, the connection point H that is adjacent to the first detection point F among the connection points between the first detection point F and the ground terminal G can be determined as the current detection point.

[0071] In another exemplary embodiment, see Figure 1 As shown, when the voltage at the connection point F is less than or equal to the preset voltage, it indicates that a faulty device may exist between the power supply terminal 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 terminal V and the first detection point F can be determined as the current detection point.

[0072] It should be noted that the above description is merely an exemplary description of the specific implementation method of determining the current detection point according to the first detection power source.

[0073] S105: Obtain a current detection voltage between the current detection point and the ground terminal.

[0074] The current detection voltage between the current detection point and the ground terminal can be obtained by a multimeter, for example, Figure 1 As shown, when the current detection point is connection point H, if a multimeter is used to obtain the current detection voltage between the current detection point H and the ground terminal G, the black test lead of the multimeter can be brought into contact with the ground terminal G of the control circuit, and the red test lead can be brought into contact 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 test lead of the multimeter can be moved accordingly, so as to obtain the current detection voltage of each connection point.

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

[0076] Among them, the faulty device can be specifically understood as an electronic device with abnormal connection or fault in the control loop. When there is a faulty device in the control loop, the control loop cannot accurately control other systems or equipment, affecting the operating safety and stability of the system or equipment.

[0077] Specifically, when a normal power signal is connected between the power supply terminal and the ground terminal, the voltage of each connection point in the control loop should reach the preset voltage. If the voltage value of the connection point is less than or equal to the preset voltage value, it means that the electrical signal between the power supply terminal and the ground terminal has not been accurately transmitted to the connection point, and the location of the faulty device in the control loop can be determined based on this.

[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 at the power supply end 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 some of the devices between the first detection point and the current detection point can be determined as faulty devices.

[0079] In another exemplary embodiment, when the current detection point is the connection point between the power supply end and the first detection point, if the current detection voltage is greater than the preset voltage, it indicates that the signal at the power supply end 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 some of the devices between the current detection point and the first detection point can be determined as faulty devices.

[0080] The embodiment of the present invention obtains the connection points between the devices in the control loop, and determines the connection point in the middle position among the connection points between the devices as the first detection point, so that after the power signal is connected between the power supply 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 is determined among the connection points between the first detection point and the ground terminal, and between the power supply terminal and the first detection point, and the current detection voltage between the current detection point and the ground terminal is obtained, so that the faulty device in the control loop can be determined according to the current detection voltage, so that there is no need to detect all the connection points in the control loop, and only some of the connection points in the control loop need to be detected to accurately determine the faulty device in the control loop, and then, on the premise of being able to realize automatic detection of the control loop, the detection method of the control loop is simplified, the detection efficiency of the control loop is improved, and the detection accuracy of the control loop is guaranteed.

[0081] Embodiment 2

[0082] Figure 3is a flow chart of a control loop detection method provided by Embodiment 2 of the present invention. Based on the above embodiments, this embodiment describes in detail a method for determining a current detection point and a faulty device in a control loop when a first detection voltage is greater than a preset voltage. Accordingly, Figure 3 As shown, the detection method of the control loop of this embodiment may include:

[0083] S201. Obtain connection points between components in a control loop.

[0084] S202: Determine a connection point at an intermediate position among the connection points between the components as a first detection point.

[0085] S203 . After a 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.

[0086] S204, determine whether the first detection voltage is greater than the preset voltage, if so, execute S205.

[0087] S205: Determine a connection point that is adjacent to the first detection point among the connection points between the first detection point and the ground terminal as a current detection point.

[0088] S206: Obtain a current detection voltage between the current detection point and the ground terminal.

[0089] S207, determine whether the current detection voltage is greater than the preset voltage; if so, execute S208; if not, execute instruction S209.

[0090] S208. Determine the connection point that is adjacent to the current detection point among the connection points between the current detection point and the ground terminal as the next detection point, and return to execute steps S201 to S207 until the faulty device in the control loop is determined, or the detection of each connection point between the current detection point and the ground terminal is completed.

[0091] S209: Determine the components between the current detection point and the previous detection point as faulty components.

[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 the 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 all devices between the first detection point and the power supply terminal can transmit signals normally, and there is no faulty device between the first detection point and the power supply terminal. The voltage at each connection point between the first detection point and the ground terminal can be further detected; first, 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, and the current detection voltage obtained 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 means 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 a faulty device; conversely, if the current detection voltage between the current detection point and the ground terminal is greater than the preset voltage, it means that all devices between the current detection point and the power supply terminal can The signal can be accurately transmitted, and there is no faulty device between the current detection point and the power supply terminal; at this time, the voltage of other connection points between the current detection point and the ground terminal can continue to be 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 of 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, and 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 a faulty device; and when the current detection voltage is greater than the preset voltage, the connection point that is adjacent to the current detection point and located between the current detection point and the ground terminal can continue to be determined as the next detection point, and the voltage of the next detection point can be detected until 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, until it is determined that the faulty device is between the current detection point and the previous detection point, the detection of each connection point can be stopped. In this way, by detecting the voltage between each detection point and the ground terminal, the location of the faulty component can be accurately and quickly determined, thereby improving detection efficiency and detection accuracy.

[0093] In an exemplary embodiment, continue 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 obtained, 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 further determined as the current detection point, and the current detection voltage between the connection point H and the ground terminal G can be obtained; 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 to be 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 further obtained; if the current detection voltage between the connection point I 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 to be 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 further obtained; When 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 to be the faulty device; 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 continued to be obtained; if the current detection voltage between the connection point J and the ground terminal G is less than or equal to the preset voltage, it can be determined that the device between the connection point J and the connection point I is the faulty device, that is, the device F1 is the faulty device; 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 continued to be obtained, or it can be directly determined that there is no faulty device in the control loop.

[0094] This embodiment detects the voltage between each connection point between the first detection point and the ground terminal and the ground terminal in sequence when the voltage between the first detection point and the ground terminal is greater than a preset voltage, thereby being able to quickly and accurately determine whether there is a faulty component in the control loop, and when there is a faulty component in the control loop, being able to accurately determine the location of the faulty component, and further when there is a faulty component in the control loop, being able to promptly repair, maintain or replace the faulty component in the control loop.

[0095] Embodiment 3

[0096] Figure 4 is a flow chart of a control loop detection method provided by Embodiment 3 of the present invention. Based on the above embodiments, this embodiment describes in detail a method for determining a current detection point and a faulty device in a control loop when a first detection voltage is less than or equal to a preset voltage. Accordingly, Figure 4 As shown, the method of this embodiment may include:

[0097] S301, obtaining connection points between components in a control loop.

[0098] S302: Determine a connection point at an intermediate position among the connection points between the components as a first detection point.

[0099] S303: After a 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, determining whether the first detection voltage is greater than a preset voltage, if not, executing S305.

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

[0102] S306: Obtain a current detection voltage between the current detection point and the ground terminal.

[0103] S307, determine whether the current detection voltage is greater than the preset voltage; if not, execute S308; if yes, execute S309.

[0104] S308. Determine the connection point that is adjacent to the current detection point among the connection points between the current detection point and the power supply end as the next detection point, and return to execute steps S301 to S307 until the faulty device in the control loop is determined, or the detection of each connection point between the power supply end and the current detection point is completed.

[0105] S309: Determine the components between the current detection point and the previous detection point as faulty components.

[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 the 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 less than or equal to the preset voltage, it can be determined that there is a faulty device between the first detection point and the power supply terminal that cannot transmit signals, and the voltage at each connection point between the first detection point and the power supply terminal can be further detected; first, the connection point adjacent to the first detection point among the connection points between the first detection point and the power supply terminal is determined as the current detection point, and the current detection voltage obtained 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 means 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 a 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 means that there is a faulty device between the current detection point and the power supply terminal that cannot transmit signals; this When the voltage of other connection points between the current detection point and the power supply end is detected, the connection point closest to the current detection point among the connection points between the current detection point and the power supply end is determined as the next detection point. When the voltage of 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, and when the current detection voltage is greater than the preset voltage, it can be determined that the device between the current detection point and the previous detection point is a faulty device; and when the current detection voltage is less than or equal to the preset voltage, the connection point that is adjacent to the current detection point and located between the current detection point and the power supply end can be continued to be determined as the next detection point, and the voltage of the next detection point can be detected until there is no detection point between the current detection point and the power supply end, it can be determined that there is no faulty device in the control loop, and the fault in the control loop may be that the power supply end fails to correctly access the power signal, or, until it is determined that the faulty device is between the current detection point and the previous detection point, the detection of each connection point can be stopped. In this way, by detecting the voltage between each detection point and the power supply terminal, the location of the faulty component can be accurately and quickly determined, thereby improving detection efficiency and detection accuracy.

[0107] In an exemplary embodiment, continue 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 obtained, 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 further determined as the current detection point, and the current detection voltage between the connection point E and the ground terminal can be obtained; 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 to be 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 further obtained; if the current detection voltage between the connection point C and the ground terminal G is greater than the preset voltage, the faulty device is located between the connection point E and the ground terminal F, that is, the device S1 can be directly determined to be 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 further obtained; At the preset voltage, it can be determined that the faulty device is located between connection point C and connection E, that is, device K2 can be determined to be a faulty device; and when the current detection voltage between connection point C and ground terminal G is less than or equal to the preset voltage, the current detection voltage between connection point B and ground terminal G can continue to be obtained; if the current detection voltage between connection point B and ground terminal G is greater than the preset voltage, it can be determined that the device between connection point B and connection point C is a faulty device, that is, device S4 is a faulty device; and when the current detection voltage between connection point B and ground terminal G is less than or equal to the preset voltage, the current detection voltage between connection point A and ground terminal G can continue to be obtained, or it can be directly determined that there is no faulty device in the control loop, and the fault in the control loop may be that the power supply terminal V fails to correctly connect to the power supply signal.

[0108] This embodiment detects the voltage between each connection point between the first detection point and the power supply terminal and the ground terminal in sequence when the voltage between the first detection point and the ground terminal is less than or equal to a preset voltage, thereby being able to quickly and accurately determine whether there is a faulty component in the control loop, and when there is a faulty component in the control loop, being able to accurately determine the location of the faulty component, and further when there is a faulty component in the control loop, being able to promptly repair, maintain or replace the faulty component in the control loop.

[0109] Embodiment 4

[0110] Figure 5 is a flow chart of a control loop detection method provided by Embodiment 4 of the present invention. Based on the above embodiments, this embodiment describes in detail the storage method, display method and reminder method of the control loop detection method. Accordingly, Figure 5 As shown, the method of this embodiment may include:

[0111] S401, obtaining connection points between components in a control loop.

[0112] S402: Determine a connection point at an intermediate position among connection points between components as a first detection point.

[0113] S403: After a 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.

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

[0115] S405: Obtain a current detection voltage between the current detection point and the ground terminal.

[0116] S406: Determine the faulty device in the control loop according to the current detection voltage.

[0117] S407 , controlling 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, which are used to store 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 helpful 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, the current detection voltage, and the detected connection points, historical data can be established to ensure that operators can review the records without missing or misdetecting connection points, helping operators to promptly discover potential problems and provide important references for subsequent maintenance work. It also facilitates future tracing and analysis, and helps improve the stability and reliability of the control loop. By storing faulty components, a basis for fault diagnosis is provided, helping operators to quickly and accurately locate and solve problems, and improving maintenance efficiency.

[0120] S408, 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.

[0121] The display device includes a display screen, an indicator light, etc. Specifically, the display screen can display the detected connection points, the current detection points, and the location information of the faulty device, and can also display the values ​​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, and 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] With such a configuration, by controlling the display device to display the detected connection point, the current detection point, the first detection voltage, the current detection voltage, and at least one of the faulty components, the detection information can be displayed visually, allowing the operator to intuitively understand the status of the control loop and the detection results, helping the operator to quickly identify potential problems and take appropriate measures for repair 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 reminder is issued.

[0124] Among them, the warning reminder includes sound alarm, visual prompt, text prompt, and remote notification. 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 the existence of a fault, such as a buzzer or an alarm can issue 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, such as 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, such as a text prompt showing the fault information on a display screen or a digital panel; when it is determined that there is a faulty device in the control loop, the operator can also be notified of the fault remotely, such as through a system connected to the network, sending an email, text message or other remote notification. Timely alarms and faulty device displays can help operators respond to faults quickly, thereby reducing production line downtime, improving production efficiency, and further improving the reliability and maintenance efficiency of the control loop.

[0125] Embodiment 5

[0126] Figure 6 : is a schematic diagram of the structure of a control loop detection device provided in Embodiment 5 of the present invention. The device can implement the control loop detection method provided in the embodiment of the present invention. The device can be implemented by software and / or hardware, and can generally be integrated in an electronic device, which can be a terminal device or a server device. Figure 6As shown, the device includes: 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 specific structure of the device is as follows:

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

[0128] The first detection point determination module 502 is used to determine a connection point in the middle of the connection points between the components as a first detection point.

[0129] The first detection voltage acquisition module 503 is used to acquire a first detection voltage between a first detection point and the ground terminal after a power signal is connected between the power terminal and the ground terminal.

[0130] The current detection point determination module 504 is used to determine the current detection point among the connection points 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.

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

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

[0133] In an optional embodiment of the present invention, the current detection point determination module 504 can also be used to: determine whether the first detection voltage is greater than a preset voltage; if so, determine 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 not, determine 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.

[0134] In an optional embodiment of the present invention, the faulty device determination module 506 can also be used to: 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, determine whether the current detection voltage is greater than the preset voltage; if not, determine the device between the current detection point and the previous detection point as a faulty device.

[0135] In an optional embodiment of the present invention, the faulty device determination module 506 can also be used for: when a 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, if the current detection voltage is greater than the preset voltage, then the connection point adjacent 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 judging whether the current detection voltage is greater than the preset voltage are returned to execute until the faulty device in the control loop is determined, or the detection of each connection point between the current detection point and the ground terminal is completed.

[0136] In an optional embodiment of the present invention, the faulty component determination module 506 can also be used to: when a connection point between the power supply end and the first detection point that is adjacent to the first detection point is determined as the current detection point, determine whether the current detection voltage is greater than a preset voltage; if so, determine the device between the current detection point and the previous detection point as a faulty device.

[0137] In an optional embodiment of the present invention, the faulty device determination module 506 can also be used for: when a 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, if the current detection voltage is less than or equal to the preset voltage, then the connection point adjacent to the current detection point among the connection points between the current detection point and the power supply end is determined as the 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 the preset voltage are returned to execute until the faulty device in the control loop is determined, or the detection of each connection point between the power supply end and the current detection point is completed.

[0138] In an optional embodiment of the present invention, the detection device of the control loop can also be used to: 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.

[0139] In an optional embodiment of the present invention, the detection device of the control loop can also be used 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 faulty device.

[0140] In an optional embodiment of the present invention, the detection device of the control loop can also be used to: issue a warning when it is determined that there is a faulty component in the control loop.

[0141] The control loop detection device can execute the control loop detection method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, please refer to the control loop detection method provided by any embodiment of the present invention.

[0142] Since the control loop detection device introduced above is a device that can execute the control loop detection method in the embodiment of the present invention, based on the control loop detection method introduced in the embodiment of the present invention, the technical personnel in the field can understand the specific implementation of the control loop detection device of the present embodiment and its various variations, so how the control loop detection device implements the control loop detection method in the embodiment of the present invention is not described in detail here. As long as the technical personnel in the field implement the device used by the control loop detection method in the embodiment of the present invention, it belongs to the scope of protection of this application.

[0143] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0144] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control loop detection method, characterized in that: The control loop includes a power supply terminal, a ground terminal, and a plurality of devices electrically connected between the power supply terminal and the ground terminal. The detection method of the control loop includes: Obtaining connection points between the devices in the control loop; Determine the connection point at the middle position among the connection points between the devices as the first detection point; After a 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; Determine a current detection point among the connection points 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; Acquiring a current detection voltage between the current detection point and the ground terminal; A faulty device in the control loop is determined according to the current detection voltage.

2. The control loop detection method according to claim 1, characterized in that: Determining a current detection point among the connection points 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 includes: Determining whether the first detection voltage is greater than a preset voltage; If yes, determining the connection point between the first detection point and the ground terminal, the connection point that is adjacent to the first detection point, as the current detection point; If not, the connection point between the power supply terminal and the first detection point and adjacent to the first detection point is determined as the current detection point.

3. The control loop detection method according to claim 2, characterized in that: When the connection point between the first detection point and the ground terminal and adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop according to the current detection voltage includes: Determine whether the current detection voltage is greater than a preset voltage; If not, the device between the current detection point and the last detection point is determined as a faulty device.

4. The control loop detection method according to claim 3, characterized in that: When the connection point between the first detection point and the ground terminal and adjacent to the first detection point is determined as the current detection point, determining a faulty device in the control loop according to the current detection voltage, further comprising: If the current detection voltage is greater than the preset voltage, the connection point between the current detection point and the ground terminal that is adjacent to the current detection point is determined as the next detection point, and the process returns to execute 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, until the faulty device in the control loop is determined, or the detection of each connection point between the current detection point and the ground terminal is completed.

5. The control loop detection method according to claim 2, characterized in that: When the connection point between the power supply terminal and the first detection point and the connection point that is adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop according to the current detection voltage includes: Determine whether the current detection voltage is greater than a preset voltage; If so, the device between the current detection point and the previous detection point is determined as a faulty device.

6. The control loop detection method according to claim 5, characterized in that: When the connection point between the power supply terminal and the first detection point and the connection point that is adjacent to the first detection point is determined as the current detection point, determining the faulty device in the control loop 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 between the current detection point and the power supply end and adjacent to the current detection point is determined as the next detection point, and the process returns to execute the steps of obtaining the current detection voltage between the power supply end and the current detection point and determining whether the current detection voltage is greater than the preset voltage, until the faulty device in the control loop is determined, or the detection of each connection point between the power supply end and the current detection point is completed.

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

8. The control loop detection method according to claim 1, characterized in that: Also includes: The display device is controlled 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.

9. The control loop detection method according to claim 1, characterized in that: Also includes: When it is determined that there is a faulty component in the control loop, a warning reminder is issued.

10. A detection device for a control loop, characterized in that: The control loop includes a power supply terminal, a ground terminal, and a plurality of devices electrically connected between the power supply terminal and the ground terminal, and the detection device of the control loop includes: A connection point acquisition module, used to acquire connection points between the devices in the control loop; A first detection point determination module, used to determine the connection point at the middle position among the connection points between the components as a first detection point; A first detection voltage acquisition module, configured to acquire a first detection voltage between the first detection point and the ground terminal after a power signal is connected between the power terminal and the ground terminal; a current detection point determination module, configured to determine a current detection point among the connection points 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; A current detection voltage acquisition module, used to acquire a current detection voltage between the current detection point and the ground terminal; The faulty component determination module is used to determine the faulty component in the control loop according to the current detection voltage.

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