Electrostatic monitoring device
By installing an electrostatic discharge monitoring circuit inside the equipment housing, and using a magnetic bead to absorb and rectify electrostatic energy as a clock signal for a D trigger, the problem of monitoring electrostatic discharge on the surface of the equipment housing is solved. This enables real-time assessment and alarm of equipment comfort, ensuring the safety of electrostatic-sensitive personnel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINGTANG TELECOMM TECH CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-21
AI Technical Summary
Existing equipment lacks the ability to monitor the instantaneous release of static electricity on the equipment casing surface, thus failing to reflect whether the equipment's comfort level meets requirements, especially its impact on static-sensitive users such as operators wearing pacemakers.
Design an electrostatic monitoring device, including an electrostatic monitoring circuit inside the housing, which uses a magnetic bead to absorb electrostatic energy, rectifies it and uses it as the clock input signal of a D flip-flop, and connects an LED light to the output of the D flip-flop to indicate the electrostatic discharge level, so as to realize real-time monitoring of electrostatics on the surface of the equipment housing and comfort assessment.
It can promptly reflect the level of electrostatic discharge on the equipment casing surface, ensuring operational comfort, especially the safety of electrostatic-sensitive personnel, and provides red and green LED alarm indicators to ensure that the equipment's comfort meets requirements.
Smart Images
Figure CN224152570U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment power monitoring technology, and in particular to an electrostatic monitoring device. Background Technology
[0002] Current safety design requirements for various electronic devices include protection against electric shock. Static discharge from the device surface may cause electric shock to the user. Therefore, the contact current generated during the instantaneous discharge of static electricity needs to meet the standard requirements.
[0003] For desktop devices, if there are surfaces that users frequently operate or touch, and where the device frequently comes into contact with the human body (such as buttons and touchscreens), comfort design should be taken into consideration. Specifically, comfort design refers to whether the discharge of static electricity accumulated on the surface of the desktop device's casing affects the operator's experience. For example, if an operator is wearing a pacemaker, they are more sensitive to static electricity; if the static electricity level is high, the operator's comfort will be lower.
[0004] Therefore, how to monitor the instantaneous release of static electricity on the surface of the equipment casing to reflect whether the comfort of the equipment meets the requirements is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] Based on the above analysis, the present invention aims to provide an electrostatic monitoring device to solve the problem that existing devices lack the ability to monitor the instantaneous release of static electricity on the surface of the device casing, thus failing to reflect whether the comfort level of the device meets the requirements.
[0006] This utility model provides an electrostatic monitoring device, including a housing, and a cavity for accommodating an electrostatic monitoring circuit is formed inside the housing; the electrostatic monitoring circuit includes an AC plug, an AC socket, a magnetic bead unit, a rectifier bridge, a D trigger, a first alarm unit, and a second alarm unit;
[0007] The grounding wire of the AC plug is connected to one end of the ferrite bead unit, the neutral wire is connected to the neutral wire of the AC socket, and the live wire is connected to the live wire of the AC socket; the other end of the ferrite bead unit is connected to the grounding wire of the AC socket; the grounding wire of the AC socket is also grounded to earth.
[0008] The first anode of the rectifier bridge is connected to the clock input terminal of the D flip-flop, the first cathode is connected to one end of the ferrite bead unit, the second cathode is connected to the other end of the ferrite bead unit, and the second anode is grounded to the common ground.
[0009] The data input terminal, set terminal, and power supply terminal of the D flip-flop are all connected to the power supply, the reset terminal and the ground terminal are all grounded to a common ground, the non-inverting output terminal is connected to the input terminal of the first alarm unit, and the inverting output terminal is connected to the input terminal of the second alarm unit; the output terminals of the first alarm unit and the second alarm unit are all grounded to a common ground.
[0010] Based on further improvements to the above-mentioned device, the magnetic bead unit includes a first magnetic bead and a second magnetic bead, wherein the first magnetic bead and the second magnetic bead are connected in series.
[0011] Based on further improvements to the above-mentioned device, the first alarm unit includes a red LED and a third resistor; the positive terminal of the red LED serves as the input terminal of the first alarm unit, the negative terminal is connected to one end of the third resistor, and the other end of the third resistor serves as the output terminal of the first alarm unit.
[0012] Based on further improvements to the above-mentioned device, the second alarm unit includes a green LED light and a fourth resistor; the positive terminal of the green LED light serves as the input terminal of the second alarm unit, the negative terminal is connected to one end of the fourth resistor, and the other end of the fourth resistor serves as the output terminal of the second alarm unit.
[0013] Based on further improvements to the above-mentioned device, the electrostatic monitoring circuit further includes a sixth resistor, a seventh resistor, and a reset switch; the reset terminal of the D flip-flop is grounded to a common ground via the seventh resistor; the reset terminal of the D flip-flop is also connected to a power supply via the reset switch and the sixth resistor.
[0014] Based on further improvements to the above-mentioned device, the electrostatic monitoring circuit further includes a first resistor and a second resistor; the data input terminal of the D flip-flop is connected to the power supply via the second resistor; and the set terminal of the D flip-flop is connected to the power supply via the first resistor.
[0015] Based on further improvements to the above-mentioned device, the electrostatic monitoring circuit further includes a first capacitor, a second capacitor, and a third capacitor; one end of each of the first capacitor, the second capacitor, and the third capacitor is connected to the power supply terminal of the D flip-flop, and the other end is grounded to a common ground.
[0016] Based on further improvements to the above-mentioned device, the AC plug is a 220V AC plug, and the AC socket is a 220V AC socket with a ground pin.
[0017] Based on a further improvement of the above device, the electrostatic monitoring circuit also includes an inductor; one end of the inductor is connected to the grounding wire of the AC socket, and the other end is connected to the common ground.
[0018] Based on further improvements to the above-mentioned device, the housing includes an upper housing and a lower housing. The upper housing is provided with a first through hole adapted to the red LED light, a second through hole adapted to the green LED light, a third through hole adapted to the reset button, and a fourth through hole adapted to the AC socket. The lower housing is provided with a fifth through hole adapted to the AC plug.
[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:
[0020] This utility model provides an electrostatic monitoring device. The energy released by electrostatic discharge is absorbed by a magnetic bead, rectified, and used as an effective clock input signal for a D flip-flop. The instantaneous electrostatic discharge is equivalent to a signal with a changing edge, which can be used as the clock signal for the D flip-flop. A D flip-flop is a device whose output flips with the change of the clock signal. An LED is connected to the output of the D flip-flop to indicate the electrostatic discharge level. It can sense the instantaneous electrostatic charge released on the surface of the desktop equipment, effectively and promptly reflecting whether the comfort of the equipment meets the requirements.
[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description
[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.
[0023] Figure 1 A connection diagram of the electrostatic monitoring circuit provided by this utility model;
[0024] Figure 2 A schematic diagram of the deployment of the electrostatic monitoring device provided by this utility model;
[0025] Figure 3 A front view of the housing of the electrostatic monitoring device provided by this utility model;
[0026] Figure 4 A bottom view of the housing of the electrostatic monitoring device provided by this utility model;
[0027] Figure 5 A side view of the housing of the electrostatic monitoring device provided by this utility model;
[0028] Figure label:
[0029] 1-Upper shell; 2-Lower shell;
[0030] 11-First through hole; 12-Second through hole; 13-Third through hole; 14-Fourth through hole; 21-Fifth through hole. Detailed Implementation
[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.
[0032] A specific embodiment of this utility model discloses an electrostatic monitoring device, such as... Figure 1 As shown, the device includes a housing, within which a cavity is formed to accommodate an electrostatic monitoring circuit; the electrostatic monitoring circuit includes an AC plug J1, an AC socket J2, a ferrite bead unit, a rectifier bridge D1, a D trigger U1A, a first alarm unit, and a second alarm unit.
[0033] The grounding wire Gound of the AC plug J1 is connected to one end of the ferrite bead unit, the neutral wire N is connected to the neutral wire N of the AC socket J2, and the live wire L is connected to the live wire L of the AC socket J2; the other end of the ferrite bead unit is connected to the grounding wire Gound of the AC socket J2; the grounding wire Gound of the AC socket J2 is also grounded to earth.
[0034] The first anode pin 1 of the rectifier bridge D1 is connected to the clock input terminal CLK of the D flip-flop, the first cathode pin 2 is connected to one end of the ferrite bead unit, the second cathode pin 3 is connected to the other end of the ferrite bead unit, and the second anode pin 4 is grounded to the common ground.
[0035] The data input terminal D, set terminal SET, and power supply terminal VDD of the D flip-flop are all connected to the power supply. The reset terminal RESET and ground terminal VSS are both grounded to a common ground. The non-inverting output terminal Q is connected to the input terminal of the first alarm unit, and the inverting output terminal... It is connected to the input terminal of the second alarm unit; the output terminals of the first alarm unit and the second alarm unit are both grounded to a common ground.
[0036] It is understandable that a D flip-flop is a device whose output flips with the change of the clock signal. The energy of electrostatic discharge is absorbed by the ferrite bead, rectified and used as the effective clock input signal of the D flip-flop. The instantaneous electrostatic discharge is equivalent to the signal of edge change, which can be used as the clock signal of the D flip-flop. An LED is connected to the output of the D flip-flop to indicate the electrostatic discharge level.
[0037] Specifically, AC plug J1 is a 220V AC plug, and AC socket J2 is a 220V AC socket with a ground pin; AC plug J1 is used to connect to the external power supply; AC socket J2 is used to connect to the device under test (DUT). In other words, the electrostatic discharge (ESD) detection device acts as the power strip for the DUT, constantly monitoring the static electricity released by the DUT. Figure 2 As shown.
[0038] Specifically, the rectifier bridge D1 uses KBU810_8A_1000V, and the D flip-flop U1A uses CD4013A.
[0039] Specifically, the power supply in the electrostatic monitoring circuit can be supplied by converting 200V to 5V or by a battery.
[0040] In practice, the magnetic bead unit includes a first magnetic bead FB1 and a second magnetic bead FB2, which are connected in series.
[0041] Specifically, both the first and second magnetic beads are through-hole magnetic beads with dimensions of 3.5*6*0.8.
[0042] Understandably, a magnetic bead is an energy-absorbing element that absorbs the instantaneously released static electricity to generate an instantaneous high voltage, converting the charge into an effective potential, which serves as the trigger signal for a D trigger. Furthermore, using two magnetic beads results in higher sensitivity.
[0043] In implementation, the first alarm unit includes a red LED light D2 and a third resistor R3; the positive terminal of the red LED light D2 serves as the input terminal of the first alarm unit, the negative terminal is connected to one end of the third resistor R3, and the other end of the third resistor R3 serves as the output terminal of the first alarm unit.
[0044] In implementation, the second alarm unit includes a green LED light D3 and a fourth resistor R4; the positive terminal of the green LED light D3 serves as the input terminal of the second alarm unit, the negative terminal is connected to one end of the third resistor R4, and the other end of the third resistor R4 serves as the output terminal of the second alarm unit.
[0045] Specifically, the third resistor R3 and the fourth resistor R4 are resistors with a resistance of 1KΩ and a tolerance of 5%.
[0046] In implementation, the electrostatic monitoring circuit also includes a sixth resistor R6, a seventh resistor R7, and a reset switch J3; the reset terminal RESET of the D flip-flop U1A is grounded to a common ground via the seventh resistor R7; the reset terminal RESET of the D flip-flop U1A is also connected to the power supply via the reset switch J3 and the sixth resistor R6.
[0047] Specifically, the sixth resistor R6 is a resistor with a resistance of 100Ω and a tolerance of 5%, and the seventh resistor R7 is a resistor with a resistance of 1KΩ and a tolerance of 5%.
[0048] Specifically, reset switch J3 is a mechanical reset switch.
[0049] In implementation, the electrostatic monitoring circuit further includes a first resistor R1 and a second resistor R2; the data input terminal D of the D flip-flop U1A is connected to the power supply via the second resistor R2; and the set terminal SET of the D flip-flop U1A is connected to the power supply via the first resistor R1.
[0050] Specifically, the second resistor R2 is a resistor with a resistance of 10KΩ and a tolerance of 5%, and the first resistor R1 is a resistor with a resistance of 1KΩ and a tolerance of 5%.
[0051] In implementation, the electrostatic monitoring circuit further includes a first capacitor C1, a second capacitor C2, and a third capacitor C3. One end of each of the first capacitor C1, the second capacitor C2, and the third capacitor C3 is connected to the power supply terminal VDD of the D flip-flop U1A, and the other ends are all grounded to a common ground. It can be understood that the first capacitor C1, the second capacitor C2, and the third capacitor C3 are used for filtering, decoupling, energy storage, and improving power quality. By connecting capacitors of different capacitance values in parallel, a wide-bandwidth filtering effect can be achieved, reducing power supply noise and improving the stability and reliability of the power supply.
[0052] Specifically, the first capacitor C1 is a 0.01μF capacitor with a rated voltage of 25V and using X7R dielectric material; the second capacitor C2 is a 33pF capacitor with a rated voltage of 50V and using C0G dielectric material; and the third capacitor C3 is a 0.1μF capacitor with a rated voltage of 25V and using X7R dielectric material.
[0053] In implementation, the electrostatic monitoring circuit also includes a fifth resistor R5; one end of the fifth resistor R5 is connected to the common ground, and the other end is connected to the clock input terminal CLK of the D flip-flop U1A; the other end of the fifth resistor R5 also serves as a test point TESTPOINT. It is understood that the test point TESTPOINT is used when the monitoring device is tested to verify the correctness of the monitoring device.
[0054] Specifically, the fifth resistor R5 is a resistor with a resistance of 1MΩ and a tolerance of 5%.
[0055] In implementation, the electrostatic monitoring circuit also includes an inductor L1; one end of the inductor L1 is connected to the grounding wire of the AC socket J1, and the other end is connected to the common ground. It is understood that the connection method of the inductor L1 is used to suppress high-frequency interference, prevent ground loop interference, provide signal isolation and protection, electromagnetic shielding, and power supply filtering.
[0056] Specifically, the inductance value of inductor L1 is 470uH.
[0057] In implementation, the housing includes an upper housing 1 and a lower housing 2. The upper housing 1 is provided with a first through hole 11 adapted to the red LED light, a second through hole 12 adapted to the green LED light, a third through hole 13 adapted to the reset button, and a fourth through hole 14 adapted to the AC socket. The lower housing 2 is provided with a fifth through hole 15 adapted to the AC plug.
[0058] Specifically, the casing is made of insulating material.
[0059] Understandably, the red LED indicates an electrostatic alarm, the green LED indicates electrostatic safety, a button is used to reset the LED status, and a five-hole socket is used to power the device; the initial state after the device is powered on is that the green light is on and the red light is off.
[0060] It should be noted that the electrostatic detection device works as follows: after power-on, the green light illuminates, indicating "electrostatic safety". When the tested device experiences electrostatic discharge, it triggers an alarm by illuminating a red LED as a "static alarm" and simultaneously turning off the green LED. Pressing the "reset" button on the device restores it to its initial state.
[0061] Specifically, the sensitivity of the electrostatic detection device is ±2KV. That is, when the tested device releases more than ±2KV of static electricity, the device will be triggered to alarm and a red light will illuminate; static electricity below ±1KV will not trigger the device alarm.
[0062] Specifically, the LED lights of the electrostatic detection device and their corresponding states are shown in Table 1.
[0063] Table 1. Device LEDs and their corresponding statuses
[0064]
[0065] Compared with the prior art, this embodiment provides an electrostatic discharge monitoring device. The energy released by electrostatic discharge is absorbed by a magnetic bead, rectified, and used as an effective clock input signal for a D flip-flop. The instantaneous electrostatic discharge is equivalent to a signal with a changing edge, which can be used as the clock signal for the D flip-flop. A D flip-flop is a device whose output flips with the change of the clock signal. An LED is connected to the output of the D flip-flop to indicate the electrostatic discharge level. It can sense the instantaneous electrostatic charge released on the surface of the desktop device's casing, effectively and promptly reflecting whether the comfort of the device meets the requirements.
[0066] Those skilled in the art will understand that this utility model does not involve any software improvements. This utility model simply requires connecting various devices with corresponding functions through the connection relationships given in the embodiments of this utility model, without involving any program software improvements. As for the connection methods between the various hardware devices with corresponding functions, these can all be implemented by those skilled in the art using existing technology, and will not be described in detail here.
[0067] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.
[0068] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. An electrostatic monitoring device, characterized by, The device includes a housing, within which a cavity is formed to accommodate an electrostatic monitoring circuit; the electrostatic monitoring circuit includes an AC plug, an AC socket, a ferrite bead unit, a rectifier bridge, a D trigger, a first alarm unit, and a second alarm unit. The grounding wire of the AC plug is connected to one end of the ferrite bead unit, the neutral wire is connected to the neutral wire of the AC socket, and the live wire is connected to the live wire of the AC socket; the other end of the ferrite bead unit is connected to the grounding wire of the AC socket; the grounding wire of the AC socket is also grounded to earth. The first anode of the rectifier bridge is connected to the clock input terminal of the D flip-flop, the first cathode is connected to one end of the ferrite bead unit, the second cathode is connected to the other end of the ferrite bead unit, and the second anode is grounded to the common ground. The data input, set, and power supply terminals of the D flip-flop are all connected to the power supply, the reset terminal and the ground terminal are both grounded to a common ground, the non-inverting output terminal is connected to the input terminal of the first alarm unit, and the inverting output terminal is connected to the input terminal of the second alarm unit; the output terminals of the first alarm unit and the second alarm unit are both grounded to a common ground.
2. The static monitoring device of claim 1, wherein, The magnetic bead unit includes a first magnetic bead and a second magnetic bead, which are connected in series.
3. The static monitoring apparatus of claim 1, wherein The first alarm unit includes a red LED and a third resistor; the positive terminal of the red LED serves as the input terminal of the first alarm unit, the negative terminal is connected to one end of the third resistor, and the other end of the third resistor serves as the output terminal of the first alarm unit.
4. The static monitoring apparatus of claim 3, wherein The second alarm unit includes a green LED light and a fourth resistor; the positive terminal of the green LED light serves as the input terminal of the second alarm unit, the negative terminal is connected to one end of the fourth resistor, and the other end of the fourth resistor serves as the output terminal of the second alarm unit.
5. The static monitoring apparatus of claim 4, wherein The electrostatic monitoring circuit also includes a sixth resistor, a seventh resistor, and a reset switch; the reset terminal of the D flip-flop is grounded to a common ground via the seventh resistor; the reset terminal of the D flip-flop is also connected to the power supply via the reset switch and the sixth resistor.
6. The static monitoring apparatus of claim 1, wherein The electrostatic monitoring circuit also includes a first resistor and a second resistor; the data input terminal of the D flip-flop is connected to the power supply via the second resistor; the set terminal of the D flip-flop is connected to the power supply via the first resistor.
7. The static monitoring apparatus of claim 1, wherein The electrostatic monitoring circuit further includes a first capacitor, a second capacitor, and a third capacitor; one end of each of the first, second, and third capacitors is connected to the power supply terminal of the D flip-flop, and the other end is grounded to a common ground.
8. The static monitoring apparatus of claim 1, wherein The AC plug is a 220V AC plug, and the AC socket is a 220V AC socket with a ground pin.
9. The static monitoring apparatus of claim 1, wherein, The electrostatic monitoring circuit also includes an inductor; one end of the inductor is connected to the grounding wire of the AC socket, and the other end is connected to the common ground.
10. The static monitoring apparatus of claim 5, wherein, The housing includes an upper housing (1) and a lower housing (2). The upper housing (1) is provided with a first through hole (11) adapted to the red LED light, a second through hole (12) adapted to the green LED light, a third through hole (13) adapted to the reset switch, and a fourth through hole (14) adapted to the AC socket. The lower housing (2) is provided with a fifth through hole (21) adapted to the AC plug.