阅读说明：本技术 一种静电防护监测系统 (Electrostatic protection monitoring system ) 是由 弓飞 于 2020-10-23 设计创作，主要内容包括：本申请公开了一种静电防护监测系统,该系统包括：至少一个监控节点、被测接地设备、至少一个分控制器、看板以及服务器；其中,每个监控节点,与至少一个被测接地设备连接,用于实时计算每个被测接地设备接地时对应的接地电阻值,以及检测接地电阻值是否超出预设阈值；每个分组控制器,与多个监控节点连接,用于对监控节点进行控制以及从监控节点中获取接地电阻值以及检测结果；服务器,与多个分组控制器连接,用于从分组控制器中获取并保存接地电阻值以及检测结果；看板,与分组控制器连接,用于从分组控制器中获取并显示接地电阻值以及检测结果。本申请解决了现有技术中无法获取高精度量化接地电阻值、无法有效追溯分析的技术问题。(The application discloses electrostatic protection monitoring system, this system includes: the system comprises at least one monitoring node, tested grounding equipment, at least one sub-controller, a billboard and a server; each monitoring node is connected with at least one tested grounding device and used for calculating a corresponding grounding resistance value when each tested grounding device is grounded in real time and detecting whether the grounding resistance value exceeds a preset threshold value or not; each group controller is connected with a plurality of monitoring nodes and is used for controlling the monitoring nodes and acquiring a grounding resistance value and a detection result from the monitoring nodes; the server is connected with the plurality of group controllers and is used for acquiring and storing the grounding resistance value and the detection result from the group controllers; and the billboard is connected with the group controller and is used for acquiring and displaying the grounding resistance value and the detection result from the group controller. The application solves the technical problems that in the prior art, the high-precision quantized grounding resistance value cannot be obtained and the analysis cannot be effectively traced.)

1. An electrostatic protection monitoring system, comprising: the system comprises at least one monitoring node, tested grounding equipment, at least one sub-controller and a server; wherein the content of the first and second substances,

each monitoring node is connected with at least one tested grounding device and used for calculating a corresponding grounding resistance value when each tested grounding device is grounded in real time and detecting whether the grounding resistance value exceeds a preset threshold value or not;

each group controller is connected with a plurality of monitoring nodes and is used for controlling the monitoring nodes and acquiring the grounding resistance value and the detection result from the monitoring nodes;

and the server is connected with the plurality of group controllers and is used for acquiring and storing the grounding resistance value and the detection result from the group controllers.

2. The system of claim 1, wherein the monitoring node comprises: the system comprises a Micro Control Unit (MCU), and a communication module, a power supply module and a monitoring module which are respectively connected with the MCU; wherein the content of the first and second substances,

the communication module is used for realizing communication connection between the micro control unit and the bus or other external equipment;

the power supply module is used for supplying power to the micro control unit in an isolated power supply mode;

the monitoring module comprises a tested grounding device monitoring module and a grounding resistance monitoring module, wherein the tested grounding device monitoring module is used for detecting and calculating a first grounding resistance value of the tested grounding device in real time, and the grounding resistance monitoring module is used for detecting and calculating a second grounding resistance value between the common node and an external static grounding body;

the micro control unit is used for controlling the communication module, the power supply module and the monitoring module, determining the grounding resistance value according to the first grounding resistance value and the second grounding resistance value, and detecting whether the grounding resistance value exceeds a preset threshold value.

3. The system of claim 2, wherein the communication module comprises a bus communication module, a UART communication module, an IIC communication module, or a general IO interface.

4. The system of claim 3, wherein the monitoring node further comprises: an alarm module; the alarm module comprises a warning lamp module or an audio output module and is used for controlling the alarm module to alarm in a light or voice mode when the detection result is that the grounding resistance value exceeds a preset threshold value.

5. The system of claim 4, wherein the monitoring node further comprises: a temperature and humidity module; the temperature and humidity module is used for acquiring temperature and humidity information of the current environment so as to perform data auxiliary analysis according to the temperature and humidity information.

6. A system according to any one of claims 1 to 5, wherein the group controller is connected to the at least one monitoring node by a bus.

7. The system of claim 6, wherein the bus is a modified bus supplying a common line for RS485, CAN, or C-MBUS like communication.

8. The system of any of claims 1 to 5, wherein the server is further configured to:

receiving configuration modification information input by a user, generating a modification instruction according to the configuration modification information, and sending the modification instruction to each group controller, so that the group controller forwards the modification instruction to each monitoring node, and each monitoring node adjusts and modifies the configuration information according to the modification instruction.

9. The system of any one of claims 1 to 5, further comprising: a billboard; and the billboard is connected with the group controller and is used for acquiring and displaying the grounding resistance value and the detection result from the group controller.

Technical Field

The application relates to the technical field of electrostatic protection, in particular to an electrostatic protection monitoring system.

Background

Electrostatic protection refers to a countermeasure taken to prevent a human body from being electrically shocked, a fire or explosion, failure and damage of electronic devices, and adverse effects on production due to accumulation of static electricity. With the rapid development of electronic technology, China is now the country with the most active world electronic product industry market and the most advanced technology, and electrostatic protection is widely applied to multiple fields, such as industrial production, scientific and technological research and development, but in the actual application process, besides the adoption of electrostatic protection measures, the process and effect of electrostatic protection also need to be monitored.

At present, the common monitoring of electrostatic protection mainly uses an automatic monitoring device to monitor the electrostatic protection, wherein the automatic monitoring device mainly uses a comparator circuit to detect the tested grounding equipment of a certain station. Specifically, the resistance detection is performed through the comparison circuit and compared with the threshold resistance to obtain a comparison result, and then a result of whether the grounding resistance of the station is qualified or not is obtained according to the comparison result, so that the electrostatic protection monitoring is performed on the grounding equipment to be detected through the automatic monitoring device, only the result of whether the grounding resistance corresponding to the grounding equipment to be detected is qualified or not can be obtained, the quantitative value of the grounding resistance corresponding to the grounding equipment to be detected in the measurement process cannot be obtained, namely convincing traceable data cannot be formed, and powerful help cannot be provided for fault tracing analysis and protection optimization. The device has the characteristics of multiple stations, large field and wide distribution in the production line of the actual manufacturing industry, the replacement frequency of the electrostatic protection articles directly influences the production management cost of enterprises, except for one-time artificial damage, the change process of the contact resistance is often a slow gradual change process, the recording and analysis of a real resistance value are not available, and the change trend of the electrostatic protection effect cannot be effectively mastered only by good and bad detection results.

Disclosure of Invention

The technical problem that this application was solved is: the technical problems that a high-precision quantized grounding resistance value cannot be obtained and effective tracing analysis cannot be performed in the prior art are solved, and the electrostatic protection monitoring system is provided.

In a first aspect, an electrostatic protection monitoring system provided in an embodiment of the present application includes: the system comprises at least one monitoring node, tested grounding equipment, at least one sub-controller and a server; wherein the content of the first and second substances,

each monitoring node is connected with at least one tested grounding device and used for calculating a corresponding grounding resistance value when each tested grounding device is grounded in real time and detecting whether the grounding resistance value exceeds a preset threshold value or not;

each group controller is connected with a plurality of monitoring nodes and is used for controlling the monitoring nodes and acquiring the grounding resistance value and the detection result from the monitoring nodes;

and the server is connected with the plurality of group controllers and is used for acquiring and storing the grounding resistance value and the detection result from the group controllers.

Optionally, the monitoring node includes: the system comprises a Micro Control Unit (MCU), and a communication module, a power supply module and a monitoring module which are respectively connected with the MCU; wherein the content of the first and second substances,

the communication module is used for realizing communication connection between the micro control unit and the bus or other external equipment;

the power supply module is used for supplying power to the micro control unit in an isolated power supply mode;

the monitoring module comprises a tested grounding device monitoring module and a grounding resistance monitoring module, wherein the tested grounding device monitoring module is used for detecting and calculating a first grounding resistance value of the tested grounding device in real time, and the grounding resistance monitoring module is used for detecting and calculating a second grounding resistance value between the common node and an external static grounding body;

the micro control unit is used for controlling the communication module, the power supply module and the monitoring module, determining the grounding resistance value according to the first grounding resistance value and the second grounding resistance value, and detecting whether the grounding resistance value exceeds a preset threshold value.

Optionally, the communication module includes a bus communication module, a UART communication module, an IIC communication module, or a general IO interface.

Optionally, the monitoring node further includes: an alarm module; the alarm module comprises a warning lamp module or an audio output module and is used for controlling the alarm module to alarm in a light or voice mode when the detection result is that the grounding resistance value exceeds a preset threshold value.

Optionally, the monitoring node further includes: a temperature and humidity module; the temperature and humidity module is used for acquiring temperature and humidity information of the current environment so as to perform data auxiliary analysis according to the temperature and humidity information.

Optionally, the group controller is connected to the at least one monitoring node via a bus.

Optionally, the bus is a modified bus of RS485, CAN or similar C-MBUS communication supply common line.

Optionally, the server is further configured to: receiving configuration modification information input by a user, generating a modification instruction according to the configuration modification information, and sending the modification instruction to each group controller, so that the group controller forwards the modification instruction to each monitoring node, and each monitoring node adjusts and modifies the configuration information according to the modification instruction.

Optionally, the method further comprises: a billboard; and the billboard is connected with the group controller and is used for acquiring and displaying the grounding resistance value and the detection result from the group controller.

Compared with the prior art, the scheme provided by the embodiment of the application has the following beneficial effects:

1. in the scheme provided by the embodiment of the application, the system can obtain the quantized value of the grounding resistance corresponding to the grounding equipment to be tested in the measurement process, so that convincing traceable data is formed, powerful help is provided for fault tracing analysis and protection optimization, the change trend of the electrostatic protection effect is effectively mastered, the electrostatic protection effect can be determined according to the quantized value of the grounding resistance, and the accuracy of the electrostatic protection effect is improved.

2. In the scheme that this application embodiment provided, be in through alarm module the testing result does when earthing resistance value surpasss preset threshold value, control alarm module reports to the police through light or voice mode, is convenient for remind the user, and then has improved user's experience and has experienced the impression.

3. In the scheme provided by the embodiment of the application, the temperature and humidity information of the current environment is acquired through the temperature and humidity module, so that data auxiliary analysis is carried out according to the temperature and humidity information, and the accuracy of data analysis is improved.

4. In the scheme provided by the embodiment of the application, the configuration modification information input by a user is received through the server, the modification instruction is generated according to the configuration modification information, and is sent to each group controller, so that the group controller forwards the modification instruction to each monitoring node, and each monitoring node adjusts and modifies the configuration information according to the modification instruction, thereby improving the flexibility of the system.

5. In the scheme provided by the embodiment of the application, the billboard is connected with the group controllers, and the grounding resistance value and the detection result are acquired and displayed from the group controllers in real time, so that the grounding resistance value and the detection result corresponding to the tested grounding equipment detected by the monitoring node controlled by each group controller can be monitored in real time, and the problem of poor data timeliness caused by overlong of a transmission link is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an electrostatic protection monitoring system according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a monitoring node according to an embodiment of the present disclosure;

fig. 3 is a circuit diagram of detecting ground resistance according to an embodiment of the present application.

Detailed Description

In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.

Referring to fig. 1, an electrostatic protection monitoring system provided in an embodiment of the present application includes: at least one monitoring node 11, a tested grounding device 12, at least one sub-controller 13 and a server 14; wherein the content of the first and second substances,

each monitoring node 11 is connected to at least one tested grounding device 12, and is configured to detect, in real time, a corresponding grounding resistance value when each tested grounding device 12 is grounded, and detect whether the grounding resistance value exceeds a preset threshold value;

each of the group controllers 13 is connected to a plurality of the monitoring nodes 11, and is configured to control each of the monitoring nodes 11 and obtain the ground resistance value and the detection result from each of the monitoring nodes 11;

the server 14 is connected to the plurality of group controllers 13, and is configured to acquire and store the ground resistance value and the detection result from each group controller 13.

Specifically, in the solution provided in the embodiment of the present application, the grounding device 12 to be tested includes, but is not limited to, a static-free bracelet, an electrical device, or an electric tool, which needs to be grounded.

Further, in order to realize real-time detection of the corresponding grounding resistance value when the at least one grounding device under test 12 is grounded, the monitoring node 11 is briefly described below. Specifically, the structure of the monitoring node 11 is various, and a preferred example is described below.

Referring to fig. 2, in a possible implementation manner, the monitoring node 11 includes: the system comprises a micro control unit MCU111, and a communication module 112, a power supply module 113 and a monitoring module 114 which are respectively connected with the micro control unit 111; wherein the content of the first and second substances,

the communication module 112 is configured to implement communication connection between the micro control unit 111 and the bus or other external devices;

the power supply module 113 is configured to supply power to the micro control unit 111 in an isolated power supply manner;

the monitoring module 114 includes a measured grounding device monitoring module 1141 and a grounding resistance monitoring module 1142, the measured grounding device monitoring module 1141 is configured to detect and calculate a first grounding resistance value of the measured grounding device in real time, and the grounding resistance monitoring module 1142 is configured to detect and calculate a second grounding resistance value between the common node and the external electrostatic grounding body;

the micro control unit 111 is configured to control the communication module 112, the power supply module 113, and the monitoring module 114, determine the ground resistance value according to the first ground resistance value and the second ground resistance value, and detect whether the ground resistance value exceeds a preset threshold.

Specifically, in the solution provided in the embodiment of the present application, the monitoring node 11 may be communicatively connected to at least one ground device 12 to be tested and one packet controller 13, and therefore, the monitoring node 11 includes a communication module. Specifically, in the solution provided in the embodiment of the present application, there are multiple communication modules included in the monitoring node 11, and several of them are taken as examples for description below.

In a possible implementation manner, the communication module 112 includes a bus communication module, a UART communication module, an IIC communication module, or a general IO interface.

Specifically, in the scheme provided in this embodiment of the present application, the monitoring node 11 is connected to the bus through the bus communication module, and then connected to the at least one tested ground device 12 through the bus, for example, the bus communication module can implement adaptation of serial communication signals between the bus and the MCU, and the rate of the adaptation can reach up to 1 Mbps. Besides the connection with the bus through the bus module, the monitoring node 11 also needs a UART communication module, an IIC communication module or a general IO interface to perform data interaction with other devices.

Further, in the solution provided in the embodiment of the present application, the power supply module 113 includes, but is not limited to, an isolation voltage stabilization power supply module, which allows 5-18V dc power supply. The isolation voltage-stabilizing power supply module supplies power in an isolation power supply mode, wherein the isolation power supply mode comprises bus power supply or independent power supply. Further, the influence of the ground circuit of the monitoring node 11 on the input end power supply system can be blocked by adopting an isolation power supply mode.

Further, when the monitoring node 11 detects at least one tested grounding device 12 in real time to calculate the corresponding grounding resistance thereof, the monitoring node 11 needs to be grounded, and therefore, when the monitoring node 11 calculates the grounding resistance value, the grounding resistance value between the common node and the external electrostatic grounding body needs to be calculated in addition to the grounding resistance corresponding to the tested grounding device 12. Therefore, in the solution provided in the embodiment of the present application, the monitoring module 114 includes a module 1141 for monitoring the ground device to be tested and a module 1142 for monitoring the ground resistance.

Because the grounding device 12 to be tested can be an anti-static bracelet, and can also be other grounding devices that need, so in the scheme that this application embodiment provided, grounding device monitoring module 1141 to be tested can monitor the anti-static bracelet, also can monitor other grounding devices that need. When being surveyed ground device monitoring module 1141 and needing other ground devices to monitor antistatic bracelet simultaneously, being surveyed ground device monitoring module 1141 including antistatic bracelet monitoring module and instrument ground resistance monitoring module, wherein, the resistance value when antistatic bracelet monitoring module is used for monitoring antistatic bracelet ground connection, the resistance value when instrument ground resistance monitoring module is used for monitoring instrument ground connection. The resistance value between the common node and the external electrostatic grounding body is detected and calculated through the grounding resistance monitoring module 1142, and synchronous measurement of various grounding resistances can be realized.

Further, when the grounding device to be tested monitoring module 1141 simultaneously monitors the anti-static bracelet and other grounding devices, the grounding device to be tested monitoring module 1141 includes the anti-static bracelet monitoring module and the device tool grounding resistance monitoring module. In order to realize that the micro control unit 111 is connected with the anti-static bracelet monitoring module, other devices requiring grounding and the grounding resistance monitoring module 1142, the micro control unit 111 includes at least three paths of 10-bit analog-to-digital conversion interfaces, which are respectively connected with the anti-static bracelet monitoring module, the device tool grounding resistance monitoring module and the grounding resistance monitoring module 1142.

Further, if in the scheme provided by the embodiment of the present application, the anti-static bracelet monitored by the monitoring node 11 has an operator identity recognition module, then a 1-way single-wire bus is reserved at a connector connected with the anti-static bracelet monitoring module, the single-wire bus is connected with the operator identity recognition module, matching between an operator and measurement data is realized by accessing the anti-static bracelet with an identity recognition function, and a basis for personnel operation management is formed.

Further, in order to implement an alarm when the measured ground device 12 is abnormal in measurement, in a possible implementation manner, the monitoring node 11 further includes: an alarm module 116; the alarm module 116 includes a warning light module or an audio output module, and is configured to control the alarm module to alarm in a light or voice manner according to the detection result.

In the scheme that this application embodiment provided, be in through alarm module 116 the testing result does when earthing resistance value surpasss preset threshold value, control alarm module 116 reports to the police through bright lamp or voice mode, is convenient for remind the user, and then has improved user's experience and has experienced the impression.

Further, in order to improve the accuracy of data analysis, in a possible implementation manner, the monitoring node 11 further includes: a temperature and humidity module 117; the temperature and humidity module 117 is configured to acquire temperature and humidity information of a current environment, so as to perform data-aided analysis according to the temperature and humidity information.

In the scheme provided by the embodiment of the application, the temperature and humidity information of the current environment is acquired through the temperature and humidity module 117, so that data auxiliary analysis is performed according to the temperature and humidity information, and the accuracy of data analysis is further improved.

Further, in a possible implementation, the group controller 13 is connected to the at least one monitoring node 11 via a bus.

Further, in one possible implementation, the bus is a modified bus that is co-linear with the RS485, CAN, or C-MBUS-like communication power supply.

In order to facilitate understanding of the process of detecting and calculating the grounding resistance value corresponding to the grounding device 12 to be tested in real time by the monitoring node 11, the following briefly introduces an example of detecting an anti-static bracelet and other grounding devices at the same time.

Referring to fig. 3, a circuit diagram for detecting ground resistance according to an embodiment of the present application is provided. In fig. 3, the ground equipment monitoring module 1141 to be tested includes an anti-static bracelet monitoring module and an equipment tool ground resistance monitoring module, and since the processes of detecting and calculating the ground resistance value of the anti-static bracelet monitoring module and the equipment tool ground resistance monitoring module are the same, the process of detecting and calculating the ground resistance value of the anti-static bracelet monitoring module is briefly introduced below.

In the scheme provided by the embodiment of the application, the anti-static bracelet monitoring module adopts a loop measurement method to detect and calculate the grounding resistance value corresponding to the anti-static bracelet. The procedure of the loop measurement method is briefly described below.

Referring to fig. 3, the anti-static bracelet monitoring module includes a first ADC sampling pin 301, a first high-precision reference resistor 302 and a first power module 303, where the first ADC sampling pin 301 is connected to two endpoints of the anti-static bracelet, the first power module 302 is connected to the micro control unit 111, and the first high-precision reference resistor 302 is disposed between the first power module 303 and the second ADC sampling pin 301. The equipment tool ground resistance monitoring module comprises a second ADC sampling pin 304, a second high-precision reference resistor 305 and a second power module 306, wherein the second ADC sampling pin 304 is connected with two end points of the ground equipment respectively, the second power module 306 is connected with the micro control unit 111, and the second high-precision reference resistor 305 is arranged between the second power module 306 and the second ADC sampling pin 304.

The micro control unit 111 comprises a common node 307 and a common ground line 308; the ground resistance monitoring module 1142 includes a third ADC sampling pin 309, a third high-precision reference resistor 3010 and a third power module 3011, where the third ADC sampling pin 309 is grounded via the common node 308 first, the third power module 3011 is connected to the micro control unit 111, and the third high-precision reference resistor 3010 is disposed between the third power module 3011 and the third ADC sampling pin 309.

Measuring a voltage difference between two end points of the anti-static bracelet through a first ADC sampling pin 301 of the micro control unit 111, and calculating to obtain the sum of a contact resistance between the anti-static bracelet and the skin, a harness resistance of the anti-static bracelet and a contact resistance of a plug of the anti-static bracelet by combining a first high-precision reference resistor 302; meanwhile, the common ground wire resistance monitoring module measures and calculates the resistance value between the common ground point 307 in the node and the external static grounding body by using the same principle, so that the grounding resistance value of the human body passing through the bracelet is obtained. When the operator prevents that the static bracelet wears too loosely, the bracelet pencil opens circuit, public earth connection 308 disconnection, the resistance value can obviously grow to realize unusual monitoring and warning.

When the grounding resistance detection module of the equipment tool is used for measuring the grounding resistance of the protected ground, 2 different grounding points of the equipment or the grounding points of 2 different pieces of equipment can be simultaneously connected into two terminals of the grounding resistance detection module of the equipment tool through leads, so that a loop is formed with the ground to finish measurement. The measurement principle of the soft ground and the hard ground is the same, but in order to obtain a measurement result with higher precision, the high-precision reference resistors 302, 305, 3010 in the monitoring module should be selected to have a resistance value close to the measured resistance value, and a preferable scheme is to take 1M Ω for the soft ground and 499 Ω for the hard ground.

Further, to increase system flexibility, in one possible implementation, the server 14 is further configured to:

receiving configuration modification information input by a user, generating a modification instruction according to the configuration modification information, and sending the modification instruction to each packet controller 13, so that the packet controller 13 forwards the modification instruction to each monitoring node 11, and each monitoring node 11 modifies its configuration information according to the modification instruction.

Specifically, there are various connection modes between the group controllers 13 and the server 14, for example, the group controllers 13 may be connected to a communication master controller through a bus to form a communication link, the communication master controller is communicated with the server 14 through a universal serial link, the server 14 periodically and circularly sends instructions to each group controller 13, reads the measurement result uploaded by each monitoring node, and stores the measurement result to form a data set for the administrator to call. The administrator can consult, statistically analyze the data in the server 14 through the monitoring terminal and the application software, and can control and configure each monitoring node. The server 14 adopts a service sharing mode to allow multiple users to access simultaneously, and the server 14 and the access router of the monitoring terminal are interconnected and intercommunicated through a standard Ethernet.

In the solution provided in the embodiment of the present application, the server 14 receives configuration modification information input by a user, generates a modification instruction according to the configuration modification information, and sends the modification instruction to each group controller, so that the group controllers forward the modification instruction to each monitoring node 11, and each monitoring node 11 modifies its configuration information according to the modification instruction, thereby improving the flexibility of the system.

Further, in order to improve the timeliness of checking the detection result, in a possible implementation manner, the method further includes: a signboard 15; the signboard 15 is connected to the group controller 13, and is configured to acquire and display the ground resistance value and the detection result from the group controller 13.

In the solution provided in the embodiment of the present application, the billboard 15 is connected to the group controller 13, and the ground resistance value and the detection result are acquired and displayed from the group controller 13 in real time, that is, the ground resistance value and the detection result corresponding to the tested ground equipment 12 detected by the monitoring node controlled by each group controller 13 can be monitored in real time, so as to avoid the problem of poor data timeliness due to an excessively long transmission link.

In the scheme provided by the embodiment of the application, an electrostatic protection monitoring system is formed by at least one monitoring node 11, the tested grounding device 12, at least one sub-controller 13 and a server 14, in the system, the monitoring node 11 detects and calculates the grounding resistance value and the detection result corresponding to the connected at least one tested grounding device in real time, then forwards the grounding resistance value and the detection result to the packet controller 13, then forwards the grounding resistance value and the detection result to the server by the sub-packet controller 13, and the server stores the grounding resistance value and the detection result. Therefore, the system can obtain the quantized value of the grounding resistance corresponding to the grounding equipment to be measured in the measuring process, namely, convincing traceable data are formed, powerful help is provided for fault tracing analysis and protection optimization, the change trend of the electrostatic protection effect is effectively mastered, the electrostatic protection effect can be determined according to the quantized value of the grounding resistance, and the accuracy of the electrostatic protection effect is improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.