Electrostatic alarm system

Abstract

The invention provides an electrostatic alarm system, which comprises an alarm monitoring module and a plurality of intelligent electrostatic monitoring modules, and is characterized in that the alarm monitoring module is electrically connected with the intelligent electrostatic monitoring modules; the intelligent electrostatic monitoring module is used for performing electrostatic protection condition monitoring on first target equipment, second target equipment and a ground wire to obtain first monitoring data, and executing a first alarm scheme according to the first monitoring data, the first target equipment is personal electrostatic protection equipment, and the second target equipment is field equipment; and the alarm monitoring module is used for recording and analyzing the first monitoring data to obtain second monitoring data, and executing a second alarm scheme according to the second monitoring data. By means of the technical scheme, personal electrostatic protection equipment such as electrostatic bracelets and electrostatic foot rings can be monitored, field equipment can be monitored, and meanwhile field alarm, remote alarm and data interaction between the intelligent electrostatic monitoring module and the alarm monitoring module can be carried out.

Description

Technical Field

[0001] The invention relates to the technical field of static electricity monitoring, and in particular to a static electricity alarm system. Background Art

[0002] The static electricity monitors currently on the market have a single function, usually only monitoring the static electricity protection status of the static electricity wrist strap, and lack monitoring the static electricity protection status of the on-site equipment and ground wire. In addition, the monitoring instruments of the existing technology can usually only provide sound and light alarms at the workstation, lack background data interaction and monitoring, and when the monitor itself fails, the power is manually turned off, or the wrist strap is disconnected, it is difficult to detect, and it depends on correct installation and calibration: if it is improperly installed or not calibrated regularly, it may affect the monitoring accuracy and effect. Summary of the invention

[0003] An embodiment of the present invention provides a static electricity alarm system to solve at least one of the above technical problems.

[0004] In order to achieve the above object, the present invention provides a static electricity alarm system, comprising:

[0005] An alarm monitoring module and a plurality of intelligent electrostatic monitoring modules, wherein the alarm monitoring module is electrically connected to the intelligent electrostatic monitoring module, wherein the plurality of intelligent electrostatic monitoring modules are respectively provided with independent address numbers;

[0006] The intelligent electrostatic monitoring module is used to monitor the electrostatic protection status of a first target device, a second target device and a ground wire, obtain first monitoring data, and execute a first alarm scheme according to the first monitoring data, wherein the first target device is a personal electrostatic protection device and the second target device is a field device;

[0007] The intelligent static electricity monitoring module includes an interface submodule, a static electricity collection submodule, a microcontroller submodule, a first alarm submodule and a communication submodule;

[0008] The interface submodule is used to electrically connect the intelligent electrostatic monitoring module to the first target device and the second target device;

[0009] The static electricity collection submodule is used to collect first monitoring data from the first target device, the second target device and the ground line;

[0010] The micro-control submodule is used to control the first alarm submodule to execute the first alarm scheme according to the first monitoring data;

[0011] The communication submodule is used to enable the intelligent static electricity monitoring module and the alarm monitoring module to exchange data;

[0012] The alarm monitoring module is used to record and analyze the first monitoring data, obtain second monitoring data, and execute a second alarm scheme according to the second monitoring data.

[0013] Furthermore, the electrostatic collection submodule includes a first detection interface and a second detection interface, the first detection interface is used to electrically connect to the first target terminal of the first target device or the second target terminal of the second target device, and the second detection interface is used to electrically connect to the ground wire of the second target device.

[0014] Further, the static electricity collection submodule is configured to amplify the first static electricity signal from the first target device or the second target device to obtain a second static electricity signal;

[0015] filtering the second electrostatic signal to obtain a third electrostatic signal;

[0016] According to a preset safety threshold, it is determined whether the third electrostatic signal exceeds a preset safety range, and an output signal is obtained.

[0017] Further, the electrostatic collection submodule includes an integrated circuit integrating four independent operational amplifiers, and the integrated circuit is configured to amplify the first electrostatic signal from the first target device or the second target device to obtain a second electrostatic signal;

[0018] The second electrostatic signal is filtered to obtain a third electrostatic signal.

[0019] Furthermore, the electrostatic collection submodule also includes an adjustable potentiometer and a positive feedback capacitor, and the adjustable potentiometer and the positive feedback capacitor are cooperated with the integrated circuit so that the electrostatic collection submodule determines whether the third electrostatic signal exceeds a preset safety range according to a preset safety threshold and obtains an output signal.

[0020] Furthermore, the static electricity collection submodule further includes a first resistor feedback network, so that the static electricity collection submodule amplifies the first static electricity signal from the first target device or the second target device to obtain a second static electricity signal.

[0021] Further, the first resistor feedback network includes a first feedback resistor, a second feedback resistor, a third feedback resistor and a fourth feedback resistor, the first feedback resistor is connected in series with the second feedback resistor, and the third feedback resistor is connected in series with the fourth feedback resistor;

[0022] The first feedback resistor is electrically connected to the cathode of the first diode, the anode of the first diode is electrically connected to the DC / DC isolated power supply module, and the second feedback resistor is electrically connected to the ground line of the second target device;

[0023] The third feedback resistor is electrically connected to a ground line of the second target device, and the fourth feedback resistor is electrically connected to an equal potential.

[0024] Furthermore, the electrostatic collection submodule also includes a first filter capacitor and a second filter capacitor, and the first filter capacitor and the second filter capacitor are both connected in parallel with the third feedback resistor and the fourth feedback resistor which are connected in series, so that the electrostatic collection submodule filters the second electrostatic signal to obtain a third electrostatic signal.

[0025] Furthermore, the communication submodule includes an RS485 communication interface and a WIFI submodule.

[0026] Furthermore, the first alarm submodule includes a buzzer or LED alarm subsystem.

[0027] The above technical solution has the following technical effects:

[0028] Through the cooperation of multiple intelligent static monitoring modules and alarm monitoring modules with independent address numbers, it can monitor not only personal static protection equipment such as static wristbands and static footbands, but also on-site equipment;

[0029] The communication submodule can realize data interaction between the intelligent static monitoring module and the alarm monitoring module. In addition to being able to issue an on-site alarm based on the first monitoring data collected by the static collection submodule, it can also monitor the second monitoring data and further issue a remote alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a structural block diagram of the static electricity alarm system in Example 1 of the present invention;

[0031] Figure 2 is a structural block diagram of the intelligent static electricity monitoring module in Example 1 of the present invention;

[0032] Figure 3 is a structural block diagram of the static electricity alarm system in Example 2 of the present invention;

[0033] Figure 4 is a top view of the intelligent electrostatic monitoring module in Example 2 of the present invention;

[0034] Figure 5 yes Figure 4 A front view of

[0035] Figure 6 yes Figure 4 Rear view of

[0036] Figure 7 4 is a circuit diagram of the intelligent static electricity monitoring module in Example 2 of the present invention.

[0037] In the accompanying drawings, 101 is a power toggle switch, 102 is a first alarm submodule, 103 is a first detection interface, 104 is a second detection interface, and 105 is a 12VDC socket. DETAILED DESCRIPTION

[0038] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0039] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0040] Embodiment 1:

[0041] Reference Figure 1 , an embodiment of a static electricity alarm system, comprising:

[0042] An alarm monitoring module and a plurality of intelligent electrostatic monitoring modules, wherein the alarm monitoring module is electrically connected to the intelligent electrostatic monitoring module, wherein the plurality of intelligent electrostatic monitoring modules are respectively provided with independent address numbers;

[0043] The intelligent electrostatic monitoring module is used to monitor the electrostatic protection status of a first target device, a second target device and a ground wire, obtain first monitoring data, and execute a first alarm scheme according to the first monitoring data, wherein the first target device is a personal electrostatic protection device and the second target device is a field device;

[0044] Reference Figure 2 , the intelligent static electricity monitoring module includes an interface submodule, a static electricity collection submodule, a microcontroller submodule, a first alarm submodule and a communication submodule;

[0045] The interface submodule is used to electrically connect the intelligent electrostatic monitoring module to the first target device and the second target device;

[0046] The static electricity collection submodule is used to collect first monitoring data from the first target device, the second target device and the ground line;

[0047] The micro-control submodule is used to control the first alarm submodule to execute the first alarm scheme according to the first monitoring data;

[0048] The communication submodule is used to enable the intelligent static electricity monitoring module and the alarm monitoring module to exchange data;

[0049] The alarm monitoring module is used to record and analyze the first monitoring data, obtain second monitoring data, and execute a second alarm scheme according to the second monitoring data.

[0050] Optionally, the electrostatic collection submodule includes a first detection interface and a second detection interface, the first detection interface is used to electrically connect to the first target terminal of the first target device or the second target terminal of the second target device, and the second detection interface is used to electrically connect to the ground wire of the second target device.

[0051] Specifically, the first detection interface may include an anti-static wrist strap detection interface, an anti-static wristband detection interface, an anti-static footband detection interface, an equipment grounding detection interface, etc., the first target terminal may include a terminal of an anti-static wrist strap, a terminal of an anti-static wristband, a terminal of an anti-static footband, and other personal anti-static protection equipment terminals, and the second target terminal is a terminal of a field device;

[0052] By adopting this implementation mode, it is possible to monitor the electrostatic protection status of personal electrostatic protection equipment, field equipment and ground wire at the same time. Of course, different interfaces can also be marked to avoid misoperation.

[0053] Optionally, the static electricity collection submodule is configured to obtain a second static electricity signal from a first static electricity signal from the first target device or the second target device;

[0054] filtering the second electrostatic signal to obtain a third electrostatic signal;

[0055] According to a preset safety threshold, it is determined whether the third electrostatic signal exceeds a preset safety range, and an output signal is obtained.

[0056] By adopting this embodiment, the weak electrostatic signal to be detected, i.e., the first electrostatic signal, can be amplified to a level that can be recognized by a subsequent circuit or processor, i.e., the second electrostatic signal;

[0057] Since there may be high-frequency signal interference when monitoring static electricity, after filtering the second static electricity signal, unnecessary high-frequency signals can be removed to ensure the purity of the signal.

[0058] Optionally, the electrostatic collection submodule includes an integrated circuit integrating four independent operational amplifiers, and the integrated circuit is configured to amplify the first electrostatic signal from the first target device or the second target device to obtain a second electrostatic signal;

[0059] The second electrostatic signal is filtered to obtain a third electrostatic signal.

[0060] By adopting this implementation, the first electrostatic signal can be amplified, and the second electrostatic signal can be filtered. At the same time, the operational amplifier can operate within a wider voltage range (usually 3V to 32V), which enables it to operate stably in different power supply environments and is suitable for a variety of electrostatic monitoring application scenarios.

[0061] Optionally, the electrostatic collection submodule also includes an adjustable potentiometer and a positive feedback capacitor, and the adjustable potentiometer and the positive feedback capacitor are cooperated with the integrated circuit so that the electrostatic collection submodule determines whether the third electrostatic signal exceeds a preset safety range based on a preset safety threshold and obtains an output signal.

[0062] By adopting this implementation, a comparison function can be realized. By setting a threshold value, it is determined whether the static electricity exceeds a safe range. The operational amplifier can be configured as a comparator through positive feedback. When the static electricity level exceeds the preset threshold, a logic high or low output signal is generated to trigger an alarm or take other preventive measures. Since the grounding conditions of each manufacturer are different, the adjustable potentiometer can be controlled to control the threshold, so as to determine whether the equipment ground wire is abnormal, the terminal of the anti-static wristband is not connected to the anti-static wristband, or the anti-static wristband is in abnormal contact with the human body. An alarm can be generated in three states.

[0063] Optionally, the static electricity collection submodule further includes a first resistor feedback network, so that the static electricity collection submodule amplifies the first static electricity signal from the first target device or the second target device to obtain a second static electricity signal.

[0064] Optionally, the first resistor feedback network includes a first feedback resistor, a second feedback resistor, a third feedback resistor and a fourth feedback resistor, the first feedback resistor is connected in series with the second feedback resistor, and the third feedback resistor is connected in series with the fourth feedback resistor;

[0065] The first feedback resistor is electrically connected to the cathode of the first diode, the anode of the first diode is electrically connected to the DC / DC isolated power supply module, and the second feedback resistor is electrically connected to the ground line of the second target device;

[0066] The third feedback resistor is electrically connected to a ground line of the second target device, and the fourth feedback resistor is electrically connected to an equal potential.

[0067] By adopting this implementation, the operational amplifier can be configured as a voltage amplifier, and the gain control of the input signal can be achieved by setting an appropriate first resistor feedback network.

[0068] Optionally, the electrostatic collection submodule also includes a first filter capacitor and a second filter capacitor, and the first filter capacitor and the second filter capacitor are both connected in parallel with the third feedback resistor and the fourth feedback resistor which are connected in series, so that the electrostatic collection submodule filters the second electrostatic signal to obtain a third electrostatic signal.

[0069] By adopting this implementation mode, a more stable voltage can be obtained through the cooperation of the first filter capacitor and the second filter capacitor with the first resistor feedback network.

[0070] Optionally, the communication submodule includes an RS485 communication interface and a WIFI submodule.

[0071] Specifically, multiple intelligent static electricity monitoring modules can be connected together via RS485, and then the RS485-ETH module can be used to convert RS485 to the network port to realize data conversion.

[0072] By adopting this implementation mode, data interaction between the data and the alarm monitoring module server can be realized through the RS485 communication interface, and the data can be sent to the server of the alarm monitoring module through the communication local area network by using the WIFI submodule.

[0073] Optionally, the first alarm submodule includes a buzzer or an LED alarm subsystem.

[0074] By adopting this implementation, an on-site static electricity alarm can be realized.

[0075] Embodiment 2:

[0076] Reference Figure 3 , an embodiment of an electrostatic alarm system, in this embodiment, the intelligent electrostatic monitoring module also includes a DC / DC isolated power supply module, and the alarm monitoring module is also electrically connected to the liquid crystal display screen.

[0077] Among them, the DC / DC isolated power supply module (B0505-1W) has a 5V input and a 5V output. The isolated power supply mainly achieves electrical isolation between the signal processing circuit and the peripheral communication circuit to ensure that there will be no electric shock caused by peripheral power supply problems.

[0078] The WIFI submodule connects to the WIFI network and uploads the results of the intelligent monitoring module to the alarm monitoring module for data processing and dashboard display;

[0079] The RS485 communication interface is mainly combined with the WIFI communication module to realize data reporting when wireless network is unavailable.

[0080] Reference Figures 4 to 6The intelligent static electricity monitoring module includes a box body, on which a power toggle switch 101, a first alarm submodule 102, a first detection interface 103, a second detection interface 104 and a 12VDC socket 105 are distributed, wherein the first alarm submodule 102 is a buzzer or LED alarm subsystem.

[0081] In this embodiment, the static electricity collection submodule is configured to amplify the first static electricity signal from the first target device or the second target device to obtain a second static electricity signal;

[0082] filtering the second electrostatic signal to obtain a third electrostatic signal;

[0083] According to a preset safety threshold, it is determined whether the third electrostatic signal exceeds a preset safety range, and an output signal is obtained.

[0084] The electrostatic collection submodule includes an integrated circuit integrating four independent operational amplifiers, and the integrated circuit is configured to amplify the first electrostatic signal from the first target device or the second target device to obtain a second electrostatic signal;

[0085] The second electrostatic signal is filtered to obtain a third electrostatic signal.

[0086] Furthermore, the electrostatic collection submodule further includes an adjustable potentiometer and a positive feedback capacitor, and the adjustable potentiometer and the positive feedback capacitor cooperate with the integrated circuit, so that the electrostatic collection submodule determines whether the third electrostatic signal exceeds a preset safety range according to a preset safety threshold, and obtains an output signal;

[0087] Furthermore, the electrostatic collection submodule further includes a first resistor feedback network, so that the electrostatic collection submodule amplifies the first electrostatic signal from the first target device or the second target device to obtain a second electrostatic signal, wherein the first resistor feedback network includes a first feedback resistor, a second feedback resistor, a third feedback resistor and a fourth feedback resistor, the first feedback resistor is connected in series with the second feedback resistor, and the third feedback resistor is connected in series with the fourth feedback resistor;

[0088] The first feedback resistor is electrically connected to the cathode of the first diode, the anode of the first diode is electrically connected to the DC / DC isolated power supply module, and the second feedback resistor is electrically connected to the ground line of the second target device;

[0089] The third feedback resistor is electrically connected to the ground line of the second target device, and the fourth feedback resistor is electrically connected to the same potential. At the same time, the electrostatic collection submodule also includes a first filter capacitor and a second filter capacitor. The first filter capacitor and the second filter capacitor are both connected in parallel with the third feedback resistor and the fourth feedback resistor in series, so that the electrostatic collection submodule filters the second electrostatic signal to obtain a third electrostatic signal.

[0090] Specifically, refer to Figure 7 , four independent operational amplifiers are integrated in the integrated circuit, the positive input terminals of the four independent operational amplifiers are IN+1, IN+2, IN+3 and IN+4, respectively, and the negative input terminals are IN-1, IN-2, IN-3 and IN-4, respectively, the positive input terminal IN+1 of the first operational amplifier is electrically connected to a low-pass filter composed of a resistor R16 and a capacitor C14, the negative input terminal IN-1 of the first operational amplifier is grounded, and the low-pass filter is also electrically connected to a 5V-2 terminal of the DC / DC isolated power supply module and electrically connected to the positive electrode of the second diode D5;

[0091] An output terminal of the first independent operational amplifier is electrically connected to a positive input terminal IN+4 of a fourth independent operational amplifier;

[0092] Resistor R7, resistor R10, resistor R13 and resistor R17 form a first resistor feedback network, wherein resistor R7 is a first feedback resistor, resistor R10 is a second feedback resistor, resistor R13 is a third feedback resistor, resistor R17 is a fourth feedback resistor, diode D4 is a first diode, and capacitor C10 and capacitor C11 connected in parallel are a first filter capacitor and a second filter capacitor, respectively;

[0093] The first detection interface is electrically connected to the second resistance feedback network composed of the resistor R5, the resistor R8, the resistor R11 and the resistor R12, and is electrically connected to the capacitor C12 and the adjustable potentiometer WR1, and is electrically connected to the cathode of the second diode D5, the adjustable potentiometer WR1 is electrically connected to the positive feedback capacitor C13, the negative input terminal of the second independent operational amplifier is electrically connected between the capacitor C12 and the resistor R12, and the positive input terminal of the second independent operational amplifier is electrically connected between the resistor R8 and the resistor R11;

[0094] The output terminal OUT2 of the second independent operational amplifier is electrically connected to the first optical coupler through the resistor R9, and the output terminal OUT4 of the fourth independent operational amplifier and the negative input terminal IN-4 of the fourth independent operational amplifier are both electrically connected to the second optical coupler through the resistor R15.

[0095] In this embodiment, when the voltage of the positive input terminal IN+2 of the second independent operational amplifier is greater than the voltage of the negative input terminal IN-2 of the second independent operational amplifier, the output terminal OUT2 of the second independent operational amplifier outputs a high level, otherwise it outputs a low level.

[0096] When the voltage of the positive input terminal IN+1 of the first independent operational amplifier is greater than the voltage of the negative input terminal IN-1 of the first independent operational amplifier, that is, the voltage of the ground terminal of the field device, the output terminal OUT1 of the first independent operational amplifier outputs a high level, which means that the ground terminal of the field device is good, the first target terminal (the terminal of the anti-static wristband) is connected to the anti-static wristband, and the anti-static wristband is in good contact with the human body;

[0097] When the ground wire of the field equipment is abnormal, the terminal of the anti-static wristband is not connected to the anti-static wristband, or the anti-static wristband is in abnormal contact with the human body, the positive input terminal IN+1 of the first independent operational amplifier will be less than the voltage of the ground wire terminal IN-1 of the field equipment, and the output terminal OUT1 of the first independent operational amplifier will output a low level, causing an abnormality to be detected.

[0098] At the same time, the combination of R7, R10, R13, and R17 can produce resistance voltage division - (R13+R17+equipment grounding resistance) / (R13+R17+equipment grounding resistance+R7+R10)*5V.

[0099] In summary, the beneficial effects of this embodiment include:

[0100] 1. High sensitivity: It can detect the static grounding status and find potential static risks in time.

[0101] 2. Real-time monitoring: Real-time monitoring and rapid response to static electricity anomalies to reduce damage and failures caused by static electricity.

[0102] 3. Multiple application fields: Applicable to a wide range of industries, including but not limited to electronics, semiconductors, pharmaceuticals, chemicals, food processing, medical care, aviation, etc.

[0103] 4. High reliability: using high-quality materials and advanced manufacturing technology to ensure long-term stable operation.

[0104] 5. Multiple alarm methods: alarms can be given through sound, light signals, system dashboards, etc. to improve emergency response efficiency.

[0105] 6. Easy to install and maintain: simplifies the installation process and reduces maintenance costs.

[0106] 7. Efficient data collection: Use network technology to improve data collection efficiency and provide support for decision-making.

[0107] 8. Scalability: Interfaces and software modules can be customized according to needs to adapt to changes in the production environment.

[0108] 9. Economical: The overall cost is low and has good cost performance.

[0109] 10. Comprehensive solution: It can comprehensively analyze, record and solve static electricity problems to ensure smooth production process.

[0110] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An electrostatic alarm system, characterized in that: include: An alarm monitoring module and a plurality of intelligent electrostatic monitoring modules, wherein the alarm monitoring module is electrically connected to the intelligent electrostatic monitoring module, wherein the plurality of intelligent electrostatic monitoring modules are respectively provided with independent address numbers; The intelligent electrostatic monitoring module is used to monitor the electrostatic protection status of a first target device, a second target device and a ground wire, obtain first monitoring data, and execute a first alarm scheme according to the first monitoring data, wherein the first target device is a personal electrostatic protection device and the second target device is a field device; The intelligent static electricity monitoring module includes an interface submodule, a static electricity collection submodule, a microcontroller submodule, a first alarm submodule and a communication submodule; The interface submodule is used to electrically connect the intelligent electrostatic monitoring module to the first target device and the second target device; The static electricity collection submodule is used to collect first monitoring data from the first target device, the second target device and the ground line; The micro-control submodule is used to control the first alarm submodule to execute the first alarm scheme according to the first monitoring data; The communication submodule is used to enable the intelligent static electricity monitoring module and the alarm monitoring module to exchange data; The alarm monitoring module is used to record and analyze the first monitoring data, obtain second monitoring data, and execute a second alarm scheme according to the second monitoring data.

2. The static electricity alarm system according to claim 1, characterized in that: The electrostatic collection submodule includes a first detection interface and a second detection interface, the first detection interface is used to electrically connect to the first target terminal of the first target device or the second target terminal of the second target device, and the second detection interface is used to electrically connect to the ground wire of the second target device.

3. The static electricity alarm system according to claim 1, characterized in that: The static electricity collection submodule is configured to amplify a first static electricity signal from the first target device or the second target device to obtain a second static electricity signal; filtering the second electrostatic signal to obtain a third electrostatic signal; According to a preset safety threshold, it is determined whether the third electrostatic signal exceeds a preset safety range, and an output signal is obtained.

4. The static electricity alarm system according to claim 3, characterized in that: The electrostatic collection submodule includes an integrated circuit integrating four independent operational amplifiers, and the integrated circuit is configured to amplify the first electrostatic signal from the first target device or the second target device to obtain a second electrostatic signal; The second electrostatic signal is filtered to obtain a third electrostatic signal.

5. The static electricity alarm system according to claim 4, characterized in that: The electrostatic collection submodule also includes an adjustable potentiometer and a positive feedback capacitor, which are coordinated with the integrated circuit so that the electrostatic collection submodule determines whether the third electrostatic signal exceeds a preset safety range according to a preset safety threshold and obtains an output signal.

6. The static electricity alarm system according to claim 4, characterized in that: The static electricity collection submodule further includes a first resistor feedback network, so that the static electricity collection submodule amplifies the first static electricity signal from the first target device or the second target device to obtain a second static electricity signal.

7. The static electricity alarm system according to claim 6, characterized in that: The first resistor feedback network includes a first feedback resistor, a second feedback resistor, a third feedback resistor and a fourth feedback resistor, the first feedback resistor is connected in series with the second feedback resistor, and the third feedback resistor is connected in series with the fourth feedback resistor; The first feedback resistor is electrically connected to the cathode of the first diode, the anode of the first diode is electrically connected to the DC / DC isolated power supply module, and the second feedback resistor is electrically connected to the ground line of the second target device; The third feedback resistor is electrically connected to a ground line of the second target device, and the fourth feedback resistor is electrically connected to an equal potential.

8. The static electricity alarm system according to claim 7, characterized in that: The electrostatic collection submodule also includes a first filter capacitor and a second filter capacitor, and the first filter capacitor and the second filter capacitor are both connected in parallel with the third feedback resistor and the fourth feedback resistor in series, so that the electrostatic collection submodule filters the second electrostatic signal to obtain a third electrostatic signal.

9. The static electricity alarm system according to claim 1, characterized in that: The communication submodule includes an RS485 communication interface and a WIFI submodule.

10. The static electricity alarm system according to claim 1, characterized in that: The first alarm submodule includes a buzzer or LED alarm subsystem.

Images