Equipment grounding monitoring system and equipment grounding monitoring method

Abstract

The present invention discloses an equipment grounding monitoring system and method for monitoring the grounding of an equipment system. The equipment system includes at least one device and a grounding bus. The system includes a control module with communication connection and a detection module including at least one detection unit. Each detection unit includes a measuring component and a connecting component; the connecting component has a first terminal, a second terminal and a third terminal, the first terminal is connected to the device; the second terminal is electrically connected to the grounding bus, and the measuring component is connected between the first terminal and the third terminal; the control module controls each terminal of each detection unit to switch to the first connection state to obtain a measurement value, and the control module determines whether the grounding of each device is effective based on each measurement value. The present invention can automatically measure the electrical characteristic value of the grounding of each device in the equipment system, and judge whether the grounding of each device is effective and whether there is any abnormality based on this. It no longer requires personnel to conduct regular manual inspections, and is easy to operate, simple and quick.

Description

Technical Field

[0001] The present invention relates to an equipment grounding monitoring system and an equipment grounding monitoring method, and in particular to an equipment grounding monitoring system and an equipment grounding monitoring method that are simple, convenient, and capable of real-time monitoring. Background Art

[0002] Please refer to Figure 1 , Figure 1 It is a partial schematic diagram of the equipment system of the prior art. The equipment system 20' includes electrical equipment 11' and electrical equipment 12', and the electrical equipment 11' and electrical equipment 12' are electrically connected to the grounding bus 22' through the grounding wire g1' and the grounding wire g2' respectively. When it is necessary to check the grounding condition of each device, manual inspection can be performed. Taking the SMT (Surface Mounted Technology) factory as an example, personnel generally check the grounding condition regularly, and need to use tools such as electric meters to measure the impedance value to ensure that there is no abnormality in the grounding of the grounding wire of each device. The manual monitoring method not only increases the workload of the inspectors, consumes a lot of manpower and time, but also the general inspection results are manually recorded, and the preservation and reliability of the record sheet are not guaranteed. Summary of the Invention

[0003] The object of the present invention is to provide a simple, convenient and real-time monitoring system and method for equipment grounding, so as to solve the above problems.

[0004] To achieve the above-mentioned objectives, the present invention provides an equipment grounding monitoring system for monitoring the grounding of an equipment system, wherein the equipment system includes at least one device and a grounding bus, each device being connected to the grounding bus via a grounding wire. The system is characterized in that the equipment grounding monitoring system includes a control module and a detection module. The detection module is communicatively connected to the control module and includes at least one detection unit, each of which corresponds to the at least one device, and each detection unit includes a measuring component and a connecting component; the connecting component has a first terminal, a second terminal, and a third terminal, the first terminal being connected to the corresponding device; the second terminal being electrically connected to the grounding bus, and the measuring component being connected between the first terminal and the third terminal; wherein, in a monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a first connection state, so that each measuring component is connected between the corresponding device and the grounding bus to obtain a measurement value, and the control module determines whether the grounding of each device is effective based on each measurement value.

[0005] As an optional technical solution, in the non-monitoring state, the control module controls the first terminal, the second terminal and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding sub-line is formed between each device and the grounding bus.

[0006] As an optional technical solution, in the first connection state, the first terminal is disconnected from the second terminal, and the second terminal is connected to the third terminal; in the second connection state, the first terminal is connected to the second terminal, and the second terminal is disconnected from the third terminal.

[0007] As an optional technical solution, each detection unit further includes a communication component, which is communicatively connected to the control module, the connection component and the measurement component; when the control module sends a first switching signal to each communication component, each communication component switches the corresponding first terminal, the second terminal and the third terminal to the first connection state according to the first switching signal; then the control module sends a first measurement signal to each communication component, and each communication component causes the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module.

[0008] As an optional technical solution, the control module forms a judgment result corresponding to each device according to each measurement value, and the control module transmits each judgment result to the system database to form a big data dashboard.

[0009] In addition, the present invention also provides a device grounding monitoring method for monitoring the grounding of a device system. The device system includes at least one device and a grounding bus. Each device is connected to the grounding bus via a grounding wire. The device grounding monitoring method includes:

[0010] Step A: Providing an equipment grounding monitoring system, the equipment grounding monitoring system comprising a control module and a detection module, the detection module being communicatively connected to the control module and comprising at least one detection unit, the at least one detection unit corresponding one-to-one to the at least one equipment, and each detection unit comprising a measuring component and a connecting component, the connecting component having a first terminal, a second terminal, and a third terminal, the first terminal being connected to the corresponding equipment, the second terminal being connected to the ground bus, and the measuring component being connected across the first terminal and the third terminal; and

[0011] In step B, when the control module controls the detection module to switch to the monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to the first connection state, so that each measuring component is connected between the corresponding device and the ground bus to obtain a measurement value; and whether the grounding of each device is effective is determined based on each measurement value.

[0012] As an optional technical solution, the method further comprises:

[0013] In step C, when the control module controls the detection module to switch to a non-monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding sub-line is formed between each device and the grounding bus.

[0014] As an optional technical solution, in step B, in the first connection state, the first terminal is disconnected from the second terminal, and the second terminal is connected to the third terminal; in step C, in the second connection state, the first terminal is connected to the second terminal, and the second terminal is disconnected from the third terminal.

[0015] As an optional technical solution, each detection unit further includes a communication component, each communication component is communicatively connected to the control module, the connection component and the measurement component; Step B further includes,

[0016] The control module sends a first switching signal to each communication component, and each communication component switches the corresponding first terminal, the second terminal, and the third terminal to the first connection state according to the first switching signal; and

[0017] The control module sends a first measurement signal to each communication component. Each communication component enables the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module.

[0018] As an optional technical solution, in step B, the control module forms a judgment result corresponding to each device based on each measurement value to confirm whether the grounding of each device is effective; the method also includes step D, in which the control module transmits each judgment result to the system database to form a big data dashboard.

[0019] Compared to the prior art, the present invention not only maintains the connection of each device in the system to the grounding bus via a grounding wire, but also adds a device grounding monitoring system. Through the coordination between the control module and the detection module, when grounding monitoring is required, the detection module switches its state to automatically measure the electrical characteristic values of the grounding of each device in the system. Based on this, it determines whether the grounding of each device is effective and whether there are any abnormalities. This eliminates the need for regular manual inspections by personnel, making operation simple, quick, and convenient. Furthermore, the judgment results can be transmitted to the system database to form a big data dashboard, allowing users to intuitively understand the grounding status of each device in the system.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A partial schematic diagram of a prior art equipment grounding system;

[0022] Figure 2 This is a flow chart of the equipment grounding monitoring method of the present invention;

[0023] Figure 3 Schematic block diagram of the equipment grounding monitoring system of the present invention;

[0024] Figure 4 A partial schematic diagram of the equipment grounding monitoring system of the present invention in a monitoring state;

[0025] Figure 5 FIG. 1 is a partial schematic diagram of the equipment grounding monitoring system of the present invention in a non-monitoring state. DETAILED DESCRIPTION

[0026] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0027] Please refer to Figures 2 to 5 , Figure 2 This is a flow chart of the equipment grounding monitoring method of the present invention; Figure 3 Schematic block diagram of the equipment grounding monitoring system of the present invention; Figure 4 A partial schematic diagram of the equipment grounding monitoring system of the present invention in a monitoring state; Figure 5 FIG2 is a partial schematic diagram of the equipment grounding monitoring system of the present invention in a non-monitoring state. The present invention provides an equipment grounding monitoring system 10 for performing grounding monitoring on an equipment system 20. The equipment system 20 includes at least one device and a grounding bus 22, each device connected to the grounding bus 22 via a grounding wire. In this embodiment, the equipment system 20 includes a first device 11 and a second device 12, each connected to the grounding bus 22 via a first grounding wire g1 and a second grounding wire g2, respectively. In actual operation, the number of devices included in the equipment system 20 is not limited to this, and the device types may also vary.

[0028] The equipment grounding monitoring system 10 includes a control module 110 and a detection module 120. The detection module 120 is communicatively connected to the control module 110 and includes at least one detection unit. The at least one detection unit corresponds one-to-one to the at least one device mentioned above. Each detection unit includes a measuring component and a connecting component. The connecting component has a first terminal, a second terminal, and a third terminal. The first terminal is connected to the corresponding device, the second terminal is electrically connected to the ground bus 22, and the measuring component is connected between the first terminal and the third terminal. In the monitoring state, the control module 110 controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to the first connection state, so that each measuring component is connected between the corresponding device and the ground bus 22 to obtain a measurement value. The control module 110 determines whether the grounding of each device in the equipment system 20 is effective based on each measurement value.

[0029] like Figure 2 As shown, the present invention also provides a device grounding monitoring method for monitoring grounding of a device system 20. The device system 20 includes at least one device and a grounding bus 22. Each device is connected to the grounding bus 22 via a grounding wire. The monitoring method includes:

[0030] Step A (S110) provides an equipment grounding monitoring system 10, which includes a control module 110 and a detection module 120. The detection module 120 is communicatively connected to the control module 110 and includes at least one detection unit. The at least one detection unit corresponds one-to-one with the at least one device. Each detection unit includes a measuring component and a connecting component. The connecting component has a first terminal, a second terminal, and a third terminal. The first terminal is connected to the corresponding device, the second terminal is connected to the ground bus 22, and the measuring component is connected between the first terminal and the third terminal.

[0031] In step B (S120), when the control module 110 controls the detection module 120 to switch to the monitoring state, the control module 110 controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to the first connection state, so that each measuring component is connected between the corresponding device and the ground bus 22 to obtain a measurement value; and based on each measurement value, it is determined whether the grounding of each device is effective.

[0032] like Figure 3 and Figure 4As shown, in this embodiment, the detection module 120 includes a first detection unit 121 and a second detection unit 122. The first detection unit 121 corresponds to the first device 11, and the second detection unit 122 corresponds to the second device 12. The first detection unit 121 includes a first connection component 210 and a first measurement component 220. The first connection component 210 has a first terminal 211, a second terminal 212, and a third terminal 213. The first terminal 211 is connected to the first device 11; the second terminal 212 is electrically connected to the ground bus 22. The first measurement component 220 is connected between the first terminal 211 and the third terminal 213. Similarly, the second detection unit 122 includes a second connection component 310 and a second measurement component 320. The second connection component 310 has a first terminal 311, a second terminal 312, and a third terminal 313. The first terminal 311 is connected to the second device 12; the second terminal 312 is electrically connected to the ground bus 22; and the second measuring component 320 is connected between the first terminal 311 and the third terminal 313. When the control module 110 controls the detection module 120 to switch to the monitoring state, the control module 110 controls the first terminal 211, the second terminal 212, and the third terminal 213 of the first detection unit 121 to have a first connection state, so that the first measuring component 220 is connected between the first device 11 and the ground bus 22 to obtain a first measurement value t1. Simultaneously, the control module 110 controls the first terminal 311, the second terminal 312, and the third terminal 313 of the second detection unit 122 to also switch to the first connection state, so that the second measuring component 320 is connected between the second device 12 and the ground bus 22 to obtain a second measurement value t2. The control module 110 determines whether the grounding of the first device 11 is effective according to the first measurement value t1 ; and determines whether the grounding of the second device 12 is effective according to the second measurement value t2 .

[0033] like Figure 4 As shown, in this embodiment, when the control module 110 controls the detection module 120 to switch to the monitoring state, the control module 110 controls the first terminal 211, the second terminal 212, and the third terminal 213 of the first detection unit 121 to have a first connection state. At this time, the first terminal 211 and the second terminal 212 are disconnected, and the second terminal 212 and the third terminal 213 are connected, so that the first measurement component 220 is connected between the first device 11 and the ground bus 22 to measure the electrical characteristic value and obtain the first measurement value t1; at the same time, the control module 110 controls the first terminal 311, the second terminal 312, and the third terminal 313 of the second detection unit 122 to have a first connection state. At this time, the first terminal 311 and the second terminal 312 are disconnected, and the second terminal 312 and the third terminal 313 are connected, so that the second measurement component 320 is connected between the second device 12 and the ground bus 22 to measure the electrical characteristic value and obtain the second measurement value t2.

[0034] In the present invention, when the control module 110 controls the detection module 120 to switch to the monitoring state, the control module 110 controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding secondary line is formed between each device and the ground bus 22. Correspondingly, the aforementioned device grounding monitoring method further includes: step C (S130), when the control module 110 controls the detection module 120 to switch to the non-monitoring state, the control module 110 controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding secondary line is formed between each device and the ground bus 22.

[0035] In this embodiment, when in the non-monitoring state, the control module 110 controls the first terminal 211, the second terminal 212 and the third terminal 213 of the first detection unit 121 to have a second connection state, so that the first detection unit 121 forms a grounding sub-line between the first device 11 and the grounding bus 22 to assist in the electrical grounding of the first device 11; at the same time, the control module 110 controls the first terminal 311, the second terminal 312 and the third terminal 313 of the second detection unit 122 to switch to the second connection state, so that the second detection unit 122 forms a grounding sub-line between the second device 12 and the grounding bus 22 to assist in the electrical grounding of the second device 12.

[0036] like Figure 5 As shown, in this embodiment, when the control module 110 controls the detection module 120 to switch to the non-monitoring state, the control module 110 controls the terminals in the first connection component 210 to switch the connection relationship, switching from the first connection state to the second connection state. At this time, the first terminal 211 of the first detection unit 121 is connected to the second terminal 212, while the second terminal 212 is disconnected from the third terminal 213, so that the first device 11 is connected to the ground bus 22 via the first terminal 211 and the second terminal 212; the first terminal 311 of the second detection unit 122 is connected to the second terminal 312, while the second terminal 312 is disconnected from the third terminal 313, so that the second device 12 is connected to the ground bus 22 via the first terminal 311 and the second terminal 312.

[0037] In the present invention, on the basis of maintaining the connection between each device in the device system 20 and the ground bus 22 via a ground wire, an additional device ground monitoring system 10 is provided. By means of the cooperation between the control module 110 and the detection module 120 connected by communication, when ground monitoring is required, the state of the detection module 120 is switched to automatically measure the electrical characteristic value of the ground of each device in the device system 10, and based on this, it is determined whether the grounding of each device is effective and whether there are any abnormalities. There is no need for personnel to conduct regular manual inspections, which is convenient for operation, simple and quick. Specifically, by controlling the switching of the connection relationship (such as conduction and disconnection) of each terminal of the connection component in the detection module 120 in different states, in the non-monitoring state, each terminal has a first connection state, forming a grounding auxiliary line to assist the electrical grounding of the corresponding device; in the monitoring state, each terminal has a second connection state, so that the measurement component can measure the electrical characteristic value (such as resistance value) between the corresponding device and the ground bus 22 to determine whether the grounding of each device is effective.

[0038] In actual operation, the first measuring component 220 and the second measuring component 320 can be ohmmeters. Thus, in the monitoring state, the first measuring component 220 and the second measuring component 320 can be used to measure the grounding impedance values of the first device 11 and the second device 12, respectively, to subsequently confirm whether the grounding of the first device 11 and the second device 12 is effective. In this embodiment, the first measuring component 220 and the second measuring component 320 are RS485 serial port ohmmeters.

[0039] In actual operation, the first connecting component 210 and the second connecting component 310 can be relays. In this embodiment, the first connecting component 210 and the second connecting component 310 are 32-way RS485 serial relays. The first terminal 211 / 311 can be a contact A of a terminal block in the 32-way RS485 serial relay, the second terminal 212 / 312 can be the center point B of the terminal block, and the third terminal 213 / 313 can be another contact C of the terminal block.

[0040] In this embodiment, the normal state of the detection module 120 is a non-monitoring state (or a non-measurement detection state). Taking the first detection unit 121 as an example, the terminal block AB of the relay (i.e., the first connecting component) is a normally closed contact group (i.e., the first terminal 211 and the second terminal 212 are connected, and the contact A is conductive with the center point B), and the terminal block BC of the relay (i.e., the first connecting component 210) is a normally open contact group (i.e., the second terminal 212 and the third terminal 213 are disconnected, and the contact C is disconnected from the center point B), thereby forming a grounding auxiliary line between the first device 11 and the grounding bus 22. The grounding auxiliary line can assist in the electrical grounding of the first device 11, which is equivalent to having two grounding lines between the first device 11 and the grounding bus 22 at this time; at the same time, the contact C is disconnected from the center point C, and the first measurement component 220 (e.g., an ohmmeter) displays OL (overload). When the control module 110 controls the detection module 120 to switch to the monitoring state (also known as the measurement and monitoring state), the control module 110 controls the terminals of the first connecting component 210 to switch the connection relationship, so that the first terminal 211 is disconnected from the second terminal 212 and the second terminal 212 is connected to the third terminal 213. That is, contact A is disconnected from the center point B, while contact C is connected to the center point B. At this time, the grounding auxiliary line formed in the non-monitoring state is disconnected from the ground bus 22. The first measuring component 22 (e.g., an ohmmeter) is connected across the first device 11 and the ground bus 22, thereby measuring the resistance value between the first device 11 and the ground bus 22 as the aforementioned first measurement value t1. The control module 110 can use this resistance value to confirm whether the grounding between the first device 11 and the ground bus 22 is effective. The operation of other detection units (e.g., the second detection unit 122) is similar to that of the first detection unit 121 and will not be further described.

[0041] In actual operation, each detection unit also includes a communication component, which is communicatively connected to the control module 110, the connection component and the measurement component; when the control module 110 sends a first switching signal to each communication component, each communication component switches the corresponding first terminal, second terminal and third terminal to the first connection state according to the first switching signal; then the control module 110 sends a first measurement signal to each communication component, and each communication component causes the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module 110.

[0042] In this embodiment, the first detection unit 121 includes a first communication component 230, and the second detection unit 122 includes a second communication component 330. The first communication component 230 is communicatively connected to the control module 110, the first connection component 210, and the first measurement component 220. The second communication component 330 is communicatively connected to the control module 110, the second connection component 310, and the second measurement component 320. After starting the ground monitoring program, the control module 110 can send a first switching signal to the first communication component 230 and the second communication component 330. The first communication component 230 switches each terminal of the first connection component 210 to the first connection state according to the first switching signal, and the second communication component 330 switches each terminal of the second connection component 310 to the first connection state according to the first switching signal. Then, the control module 110 sends a first measurement signal to the first communication component 230 and the second communication component 330. The first communication component 230 causes the first measuring component 220 to perform measurement according to the first measurement signal and transmits the measured first measurement value t1 back to the control module 110. The second communication component 330 causes the second measuring component 320 to perform measurement according to the first measurement signal and transmits the measured second measurement value t2 back to the control module 110.

[0043] Correspondingly, the aforementioned equipment grounding monitoring method further includes:

[0044] Step B1: The control module 110 sends a first switching signal to each communication component. Each communication component switches its corresponding first terminal, second terminal, and third terminal to a first connection state according to the first switching signal.

[0045] In step B2 , the control module 110 sends a first measurement signal to each communication component. The first communication component enables the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module 110 .

[0046] In actual operation, the control module 110 can be considered the master end, and the detection module 120 can be considered the slave end. The control module 110 can include a processing unit 111 and a communication unit 112. Communication between the control module 110 and the communication components in each detection unit can be performed by the communication unit 112; signal generation, numerical calculation, comparison, etc. in the control module 110 can be performed by the processing unit 111. The communication unit 112 and the aforementioned communication components can, for example, utilize LoRa wireless technology, thereby enabling wireless data transmission and reception in the equipment grounding monitoring system 10. The communication unit 112 in the master end can utilize a 435 MHz LoRa module based on RS485 communication, with a receiving frequency of 435 MHz and a transmitting frequency of 433 MHz. The communication components in the slave end can utilize a 433 MHz LoRa module based on RS485 communication, with a receiving frequency of 433 MHz and a transmitting frequency of 435 MHz.

[0047] In another embodiment, step B of the aforementioned monitoring method may include,

[0048] Step B1, starting the ground monitoring program;

[0049] In step B2, the control module 110 sends a first switching instruction to the communication component of each detection unit. In practice, the control module 110 can send the first switching instruction to the communication component of each detection unit simultaneously, or sequentially. In practice, each device in the device system 20 can be serially numbered in advance, and the detection units corresponding to each device in the detection module 120 can be serially numbered accordingly, thereby facilitating the sequential transmission of switching instructions.

[0050] In step B3, each communication component switches each terminal of the corresponding connection component to the first connection state according to the first switching instruction; then, each communication component sends a signal confirming the successful switching to the control module 110;

[0051] In step B4, the control module 110 sends the first measurement instruction to the communication component of each detection unit. In actual operation, the control module 110 can send the first measurement instruction to the communication component of each detection unit simultaneously or sequentially.

[0052] In step B5, each communication component causes the corresponding measurement component to measure the electrical characteristic value according to the first measurement instruction and obtain a measurement value. Then, each communication component sends a signal containing the respective measurement value to the control module 110.

[0053] In step B6 , the control module 110 determines whether the grounding between each device and the ground bus 22 is effective according to the measured values, and obtains a determination result corresponding to each device.

[0054] In one embodiment, step B of the aforementioned monitoring method may also include the control module 110 transmitting the judgment result corresponding to each device to the system database; the aforementioned monitoring method also includes step D (S140), the system database forming a big data dashboard based on the judgment result corresponding to each device, so that the user can intuitively understand the grounding monitoring status of each device in the device system 20.

[0055] The equipment grounding monitoring system 10 of the present invention is developed so that each detection unit can perform real-time grounding measurements on its corresponding equipment. The control module 110, acting as the master control terminal, then makes a determination and transmits the results to the system database, creating a large-scale dashboard that allows users to intuitively understand the grounding status of each device in the equipment system 10. If any device's grounding is ineffective, the location of the problematic device can be clearly identified.

[0056] In the present invention, while maintaining the connection of each device in the system to the ground bus via a ground wire, an additional device grounding monitoring system is provided. Through the coordination between a control module and a detection module connected by communication, when ground monitoring is required, the detection module switches its state to automatically measure the electrical characteristic values of the grounding of each device in the system. Based on this, the effectiveness of the grounding of each device and any abnormalities are determined. This eliminates the need for regular manual inspections by personnel, making operation simple, quick, and convenient. Furthermore, the judgment results can be transmitted to the system database to form a big data dashboard, allowing users to intuitively understand the grounding status of each device in the system.

[0057] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An equipment grounding monitoring system for monitoring grounding of an equipment system, wherein the equipment system comprises at least one equipment and a grounding bus, each equipment being connected to the grounding bus via a grounding wire, characterized in that The equipment grounding monitoring system includes: Control module; as well as a detection module communicatively connected to the control module and comprising at least one detection unit, the at least one detection unit corresponding one-to-one to the at least one device, and each detection unit comprising a measuring component and a connecting component; the connecting component having a first terminal, a second terminal, and a third terminal, the first terminal being connected to the corresponding device; the second terminal being electrically connected to the ground bus, and the measuring component being connected across the first terminal and the third terminal; In the monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a first connection state, so that each measuring component is connected between the corresponding device and the ground bus to obtain a measurement value. The control module determines whether the grounding of each device is effective based on each measurement value. In the non-monitoring state, the control module controls the first terminal, the second terminal and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding secondary line is formed between each device and the grounding bus.

2. The equipment grounding monitoring system according to claim 1, characterized in that: In the first connection state, the first terminal is disconnected from the second terminal, and the second terminal is connected to the third terminal; in the second connection state, the first terminal is connected to the second terminal, and the second terminal is disconnected from the third terminal.

3. The equipment grounding monitoring system according to claim 1, characterized in that: Each detection unit further includes a communication component, which is communicatively connected to the control module, the connection component and the measurement component; when the control module sends a first switching signal to each communication component, each communication component switches the corresponding first terminal, the second terminal and the third terminal to the first connection state according to the first switching signal; then the control module sends a first measurement signal to each communication component, and each communication component causes the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module.

4. The equipment grounding monitoring system according to claim 1, characterized in that: The control module generates a judgment result corresponding to each device according to each measurement value, and transmits each judgment result to the system database to form a big data dashboard.

5. A device grounding monitoring method for monitoring grounding of a device system, wherein the device system comprises at least one device and a grounding bus, each device being connected to the grounding bus via a grounding wire, characterized in that The equipment grounding monitoring method includes, Step A: Providing an equipment grounding monitoring system, comprising a control module and a detection module. The detection module is communicatively connected to the control module and comprises at least one detection unit. The at least one detection unit corresponds one-to-one with the at least one equipment. Each detection unit comprises a measuring component and a connecting component. The connecting component has a first terminal, a second terminal, and a third terminal. The first terminal is connected to the corresponding equipment, the second terminal is connected to the ground bus, and the measuring component is connected between the first terminal and the third terminal. as well as In step B, when the control module controls the detection module to switch to the monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to the first connection state, so that each measurement component is connected between the corresponding device and the ground bus to obtain a measurement value; Determine whether the grounding of each device is effective based on each measured value; In step C, when the control module controls the detection module to switch to a non-monitoring state, the control module controls the first terminal, the second terminal, and the third terminal of each detection unit to switch to a second connection state, which is different from the first connection state, so that a grounding sub-line is formed between each device and the grounding bus.

6. The equipment grounding monitoring method according to claim 5, characterized in that: In step B, in the first connection state, the first terminal is disconnected from the second terminal, and the second terminal is connected to the third terminal; in step C, in the second connection state, the first terminal is connected to the second terminal, and the second terminal is disconnected from the third terminal.

7. The equipment grounding monitoring method according to claim 5, characterized in that: Each detection unit further includes a communication component, each communication component is communicatively connected to the control module, the connection component and the measurement component; Step B further includes, The control module sends a first switching signal to each communication component, and each communication component switches the corresponding first terminal, the second terminal, and the third terminal to the first connection state according to the first switching signal; and The control module sends a first measurement signal to each communication component. Each communication component enables the corresponding measurement component to perform measurement according to the first measurement signal and transmits each measurement value to the control module.

8. The equipment grounding monitoring method according to claim 5, characterized in that: In step B, the control module generates a judgment result corresponding to each device based on each measured value to confirm whether the grounding of each device is effective; the method also includes step D, in which the control module transmits each judgment result to the system database to form a big data dashboard.

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