CN111278202A - Human body electrostatic discharge circuit and application thereof - Google Patents
Human body electrostatic discharge circuit and application thereof Download PDFInfo
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- CN111278202A CN111278202A CN202010093918.0A CN202010093918A CN111278202A CN 111278202 A CN111278202 A CN 111278202A CN 202010093918 A CN202010093918 A CN 202010093918A CN 111278202 A CN111278202 A CN 111278202A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
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- Elimination Of Static Electricity (AREA)
Abstract
The invention relates to the technical field of elimination of human body static electricity discharge, in particular to a human body static electricity discharge circuit and application thereof. The method is characterized in that: including voltage-controlled varistor unit, resistance R, electric capacity C, the resistance at voltage-controlled varistor unit both ends is by the voltage control on the control utmost point G, voltage-controlled varistor unit one end ground connection, the other end is the touch end, resistance R and electric capacity C establish ties and constitute RC charging circuit, touch the touch end when the hand, human static charges to electric capacity C through resistance R, along with control utmost point G voltage risees, the resistance between voltage-controlled varistor unit both ends is by big diminishing, human static discharges through voltage-controlled varistor unit, realize prescribing a limit to discharge under the power condition quick safety release human static.
Description
Technical Field
The invention relates to the technical field of elimination of human body static electricity discharge, in particular to a human body static electricity discharge circuit and application thereof.
Background
At present, human static electricity is released by using a human static electricity releasing ball in inflammable, explosive and anti-static places, the human static electricity releasing ball is also called as a human static electricity releasing ball, the human static electricity releasing ball is a human static electricity releasing product suitable for the inflammable, explosive and anti-static places, and the main research and development aims to safely discharge static charges accumulated by a human body in inflammable and explosive dangerous areas and anti-static places, avoid fire explosion accidents caused by the human static electricity, human electric shock and reduce the electrostatic damage phenomena of electronic elements.
However, the existing human body static electricity releasing ball is made of stainless steel, the ball body (the touch ball) is connected with the ground, and the human body static electricity is quickly introduced into the ground after a hand contacts the ball body.
The electrostatic discharge circuit is specially used in the field of electrostatic elimination, and requires a certain large resistance (50-1000 megohms) to be kept in a normal shape, and requires the resistance to be rapidly reduced (0-50 megohms) after touch.
Disclosure of Invention
The intrinsic safety is derived from the GB 3836.4-201 standard, explosion-proof electrical appliances are classified into explosion-proof type, safety-increasing type, intrinsic safety type and the like, and the intrinsic safety type electrical equipment is characterized in that all circuits are intrinsic safety circuits, namely, the circuits cannot ignite specified explosive mixtures due to electric sparks and thermal effects generated under normal work or specified fault states. That is, the electric appliance is not explosion-proof by the outer shell and the filler, but the energy of electric spark or heat effect generated by the circuit in normal use or failure is less than 0.28mJ, namely the gas concentration is 8.5% (the most explosive concentration) of the minimum ignition energy.
The invention aims to provide a human body static electricity discharge circuit, which is connected to a grounded metal object, can discharge human body static electricity by touching a touch end of the electric discharge circuit with a hand, does not generate contact static sparks and does not generate electric shock to people in the human body static electricity discharge process. The human body electrostatic discharge requires no spark, no electric shock, and no long discharge time, and the human body capacitance is usually a constant value according to Q (electric quantity) = U (voltage) × C (capacitance), I (current) = U (voltage)/R (resistance), and in order to avoid instantaneous discharge, a discharge resistance is provided, i.e. the discharge power P = U is limited2In the case of a constant resistance, the voltage decreases with the decrease in the quantity of electricity, the discharge current decreases, the discharge time increases, and the discharge power decreases rapidly with the square of the voltage (P = U) (/ R)2/R), if a discharge power is limited, the resistance is rapidly reduced when the discharge is rapidly carried out, so that the scheme is realized by keeping a certain large resistance (50 Megaohm-1000 Megaohm) at the beginning and needing to touchThe resistance is rapidly reduced (0-50 megohm), and the requirement of fast and safe static electricity discharge is met.
According to the time constant T = RC of the discharge, the larger the resistance is, the longer the discharge time is required under the condition of a certain C, and the smaller the resistance is, the larger the discharge power is, and the sparks are easy to generate, so the variable resistance discharge is solved.
The technical scheme of the invention is as follows:
a human body static electricity discharge circuit is characterized in that: including voltage-controlled varistor unit, resistance R, electric capacity C, the resistance at voltage-controlled varistor unit both ends is by the voltage control on the control utmost point G, voltage-controlled varistor unit one end ground connection, the other end is the touch end, resistance R and electric capacity C establish ties and constitute RC charging circuit, touch the touch end when the hand, human static charges to electric capacity C through resistance R, along with control utmost point G voltage risees, the resistance between voltage-controlled varistor unit both ends is by big diminishing, human static discharges through voltage-controlled varistor unit, realize prescribing a limit to discharge under the power condition quick safety release human static.
A human body static electricity discharge circuit is characterized in that: the static electricity discharge circuit is made of semiconductor materials and comprises a source electrode S, a grid electrode G, a drain electrode D, a source electrode S, a grid electrode G, a resistor between the drain electrode D and the grid electrode G, and a capacitor between the grid electrode G and the source electrode S, when a hand touches the touch end of the drain electrode D, the static electricity of a human body charges the capacitor between the grid electrode G and the source electrode S through the resistor between the drain electrode D and the grid electrode G, the resistor between the drain electrode D and the source electrode S is changed from large to small along with the rise of the voltage of the grid electrode G, the static electricity of the human body is discharged through the resistor between the drain electrode D and the source electrode S, and.
A human body static electricity discharge circuit is characterized in that: the static electricity discharge device comprises a field effect tube, a resistor R and a capacitor C, wherein the resistor R is bridged between a drain electrode D and a grid electrode G of the field effect tube, the capacitor C is bridged between the grid electrode G and a source electrode S of the field effect tube, when a hand touches the drain electrode D at a touch end, the capacitor C is charged by the static electricity of a human body through the resistor R, the resistance between the drain electrode D and the source electrode S is reduced from large to small along with the voltage rise of the grid electrode G, and the static electricity of the human body is discharged through the resistance between the drain electrode D and the source electrode S from large to small, so that the static electricity of the human.
The human body static electricity discharge circuit is characterized in that: the RC constant is 1-10 seconds.
The human body static electricity discharge circuit is characterized in that: and a resistor of 100 megohm to 1000 megohm is bridged between the D and the S.
The human body static electricity discharge circuit is characterized in that: the static electricity releasing circuit is arranged on the adhesive sticker to form the sticky note.
The application of the electrostatic discharge circuit is characterized in that: the static electricity releasing circuit is arranged on the housing of the oiling machine and used for releasing the static electricity of a human body.
The application of the electrostatic discharge circuit is characterized in that: the static electricity releasing circuit is arranged on a nozzle pipe of the oil gun and used for releasing human static electricity.
The application of the electrostatic discharge circuit is characterized in that: the static electricity releasing circuit is arranged on a handle of the oil gun and used for releasing static electricity of a human body.
The application of the electrostatic discharge circuit is characterized in that: the static electricity discharge circuit is arranged on the door handle and used for discharging the static electricity of the human body.
The application of the electrostatic discharge circuit is characterized in that: the static electricity discharge circuit is arranged in the static electricity discharge ball circuit and used for discharging the static electricity of the human body.
The invention has the beneficial effects that: when the circuit and the product thereof are applied, electrostatic electric sparks are not generated, and electric shock feeling is not generated to human bodies in the process of releasing the human body static electricity, so that the human body static electricity is quickly and safely released under the condition of limiting the discharge power.
Drawings
Fig. 1 is a schematic diagram of the present invention.
FIG. 2 is a circuit diagram of a field effect transistor according to the present invention.
FIG. 3 is a schematic diagram of the resistance of the present invention over time.
FIG. 4 is a schematic diagram of the discharge current over time according to the present invention.
Fig. 5 is an embodiment of the sticky note of the present invention.
Fig. 6 shows an embodiment of the invention applied to a gasoline station.
Fig. 7 is an embodiment of the present invention applied to a fuel nozzle.
Fig. 8 shows an embodiment of the present invention applied to a door handle.
Fig. 9 is an embodiment of the present invention applied to an electrostatic discharge ball.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of the present invention, where a circuit 1000 includes a voltage-controlled varistor device 101, a resistor R, and a capacitor C, resistors at two ends of the voltage-controlled varistor device 101 are controlled by a voltage on a control electrode G, one end of the voltage-controlled varistor device is grounded, the other end is a touch end 102, the resistor R and the capacitor C are connected in series to form an RC charging circuit, when a hand touches the touch end 102, human body static charges the capacitor C through the resistor R, and as the voltage of the control electrode G increases, the resistance between two ends of the voltage-controlled varistor device decreases from large to small, and the human body static discharges through the voltage-controlled varistor device, thereby realizing rapid and safe release of the human body static under the condition. The implementation mode of the invention can be chip-level implementation or device implementation, and the chip-level implementation is to directly use a semiconductor process to manufacture the voltage-controlled varistor material or the voltage-controlled varistor chip array.
Fig. 2 is a circuit diagram of the field effect transistor of the invention, which includes a field effect transistor, a resistor R and a capacitor C, wherein the resistor R is bridged between a drain D and a gate G of the field effect transistor, the capacitor C is bridged between the gate G and a source S of the field effect transistor, when a hand touches the drain D at the touch end, human static electricity charges the capacitor C through the resistor R, as the voltage of the gate G rises, the resistance between the drain D and the source S decreases from large to small, and the human static electricity discharges through the resistance between the drain D and the source S from large to small, thereby realizing rapid and safe release of the human static electricity under the condition of limited discharge power. The figure is an N-MOS tube, the same principle can be deduced to a P-MOS tube, when a source metal and a substrate of the field effect tube are connected together, a source electrode and a drain electrode can be used interchangeably, the characteristic change is small, the source electrode and the drain electrode of the field effect tube are symmetrical in structure and can be used interchangeably, and the grid-source voltage of a depletion type MOS tube can be positive or negative.
FIG. 3 shows the present inventionThe schematic diagram of the resistance change along with time is that the maximum D-S resistance of the field effect tube is assumed to be Rmax, actually the D-S resistance of the field effect tube can be very large, a resistance of 100 mega ohm-1000 mega ohm can be bridged between the D and the S in the application of the scheme, when a human body with static electricity touches a touch end, the static electricity charges a capacitor C through a resistor R, the charging conforms to an RC charging curve, the D-S resistance is reduced from large to small along with the rise of grid G voltage and can be converted into time T, the resistance value is assumed to be 0 after ideal final touch, a is linearly reduced along with the time, b is slowly reduced along with the time, C is rapidly reduced along with the time, and as the discharging power P = U2The resistance is reduced rapidly if one discharge power is selected, the c curve conforms to the resistance change curve of RC charge, the discharge power is smaller than the safety value by selecting the RC value, the safety value does not generate electrostatic sparks, and the human body does not generate electric shock feeling.
Fig. 4 is a schematic diagram of the discharge current of the present invention changing with time, ideally, the original resistance is infinite, i.e. the initial current is 0, then reaches a safe maximum value Imax (the safe maximum value is the maximum current that does not generate sparks and shock), the current is 0 after T time, actually, the initial current is Imin determined by the D-S resistor or the bridging resistor, then reaches the maximum value Imax, and the current is 0 after T time.
FIG. 5 is an embodiment of the instant sticker of the present invention made of pressure sensitive adhesive, wherein a chip or a circuit of the present invention is disposed on a conductive substrate 601 of the pressure sensitive adhesive, the conductive substrate may be made of conductive rubber, 603 is a substrate protrusion, 603 is a protrusion to expose a conductive portion of the conductive substrate 601 so as to be able to contact with a grounding metal object, the substrate 601 is coated with a pressure sensitive adhesive 602, further, conductive particles may be added to the components of the pressure sensitive adhesive of the instant sticker to make a conductive pressure sensitive adhesive, the pressure sensitive adhesive is covered with a protective paper 604, the protective paper is also called release paper, silicone oil paper, and is release paper for preventing prepreg from adhesion and preventing prepreg from contamination.
Fig. 6 shows an embodiment of the present invention applied to a gas station, wherein 801 is a fuel dispenser, 803 is a fuel gun, and the sticky note 802 of the present invention is adhered to a metal casing of the fuel dispenser for releasing static electricity from a human body. In addition, the existing self-service fuel dispenser is provided with a metal keyboard 804 and is grounded, electrostatic sparks can occur when fingers touch the keyboard, so that the keyboard can be covered with the product of the invention, and the product of the invention can be made into a chip or an embedded circuit.
Fig. 7 shows an embodiment of the present invention applied to a fuel nozzle, and the circuit or chip 1000 of the present invention is disposed on the fuel nozzle 803, and may be disposed on the nozzle 902 or the handle 901.
Fig. 8 shows an embodiment of the present invention applied to a door handle, and considering that a human hand is often electrostatically shocked by touching the door handle in winter, the door handle 1001 is provided with the inventive product 1000 to prevent a human body from being electrostatically shocked, and the door handle includes, of course, an automobile door handle.
Fig. 9 is an embodiment of the present invention applied to an electrostatic discharge ball, and 2000 is a touch ball body of the electrostatic discharge ball, and a circuit touch terminal of the present invention is connected to the touch ball body, and human static electricity is discharged by touching with a human hand.
At present, the static electricity elimination of a human body adopts a static electricity releasing ball, and because the static electricity releasing ball is made of metal, when a finger touches the static electricity releasing ball, static electricity sparks can be generated, all potential safety hazards in an inflammable and explosive field can be caused, and meanwhile, the static electricity releasing ball can also generate electric shock feeling to the human body; at present, a sub-conductor touch ball body (the industry standard SY/T7354-2017, 10-1000 megohm resistance) is adopted, so that the instantaneous human body static electricity release energy is reduced, the electric shock feeling is reduced, but the human body static electricity release time needs to be prolonged, and the static electricity carried by the human body cannot be completely released due to the resistance, so that the circuit can completely release the human body static electricity without static spark and electric shock feeling.
The product of the invention can be pasted in all places needing to discharge static electricity, such as vehicle doors, explosion-proof equipment, instruments and the like.
In addition, a glow discharge tube can be arranged in the electrostatic discharge loop to display the discharge process of the static electricity (in the case of meeting the explosion-proof requirement, such as explosion-proof neon bubbles).
The above application modes and rules do not limit the basic features of the method and application of the present invention, and do not limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A human body static electricity discharge circuit is characterized in that: including voltage-controlled varistor unit, resistance R, electric capacity C, the resistance at voltage-controlled varistor unit both ends is by the voltage control on the control utmost point G, voltage-controlled varistor unit one end ground connection, the other end is the touch end, resistance R and electric capacity C establish ties and constitute RC charging circuit, touch the touch end when the hand, human static charges to electric capacity C through resistance R, along with control utmost point G voltage risees, the resistance between voltage-controlled varistor unit both ends is by big diminishing, human static discharges through voltage-controlled varistor unit, realize prescribing a limit to discharge under the power condition quick safety release human static.
2. A human body static electricity discharge circuit is characterized in that: the static electricity discharge circuit is made of semiconductor materials and comprises a source electrode S, a grid electrode G, a drain electrode D, a source electrode S, a grid electrode G, a resistor between the drain electrode D and the grid electrode G, and a capacitor between the grid electrode G and the source electrode S, when a hand touches the touch end of the drain electrode D, the static electricity of a human body charges the capacitor between the grid electrode G and the source electrode S through the resistor between the drain electrode D and the grid electrode G, the resistor between the drain electrode D and the source electrode S is changed from large to small along with the rise of the voltage of the grid electrode G, the static electricity of the human body is discharged through the resistor between the drain electrode D and the source electrode S, and.
3. A human body static electricity discharge circuit is characterized in that: the static electricity discharge device comprises a field effect tube, a resistor R and a capacitor C, wherein the resistor R is bridged between a drain electrode D and a grid electrode G of the field effect tube, the capacitor C is bridged between the grid electrode G and a source electrode S of the field effect tube, when a hand touches the drain electrode D at a touch end, the capacitor C is charged by the static electricity of a human body through the resistor R, the resistance between the drain electrode D and the source electrode S is reduced from large to small along with the voltage rise of the grid electrode G, and the static electricity of the human body is discharged through the resistance between the drain electrode D and the source electrode S from large to small, so that the static electricity of the human.
4. The human body electrostatic discharge circuit according to claim 1, 2 or 3, wherein: the RC constant is 1-10 seconds.
5. The human body electrostatic discharge circuit according to claim 1, 2 or 3, wherein: and a resistor of 100 megohm to 1000 megohm is bridged between the D and the S.
6. The human body electrostatic discharge circuit according to claim 1, 2 or 3, wherein: the human body static electricity discharge circuit is characterized in that: the static electricity releasing circuit is arranged on the adhesive sticker to form the sticky note.
7. Use of an electrostatic discharge circuit according to claim 1, 2 or 3, characterized in that: the static electricity releasing circuit is arranged on the housing of the oiling machine and used for releasing the static electricity of a human body.
8. Use of an electrostatic discharge circuit according to claim 1, 2 or 3, characterized in that: the static electricity releasing circuit is arranged on a nozzle pipe of the oil gun and used for releasing human static electricity; or the static electricity discharge circuit is arranged on a handle of the oil gun and used for discharging the static electricity of the human body.
9. Use of an electrostatic discharge circuit according to claim 1, 2 or 3, characterized in that: the static electricity discharge circuit is arranged on the door handle and used for discharging the static electricity of the human body.
10. Use of an electrostatic discharge circuit according to claim 1, 2 or 3, characterized in that: the static electricity discharge circuit is arranged in the static electricity discharge ball circuit and used for discharging the static electricity of the human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093918.0A CN111278202A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge circuit and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093918.0A CN111278202A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge circuit and application thereof |
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| CN111278202A true CN111278202A (en) | 2020-06-12 |
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| CN202010093918.0A Pending CN111278202A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge circuit and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023051089A (en) * | 2021-09-30 | 2023-04-11 | 東芝情報システム株式会社 | Electric field human body communication system, transmitter and receiver |
-
2020
- 2020-02-14 CN CN202010093918.0A patent/CN111278202A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023051089A (en) * | 2021-09-30 | 2023-04-11 | 東芝情報システム株式会社 | Electric field human body communication system, transmitter and receiver |
| JP7311799B2 (en) | 2021-09-30 | 2023-07-20 | 東芝情報システム株式会社 | Electromagnetic human body communication system, transmitter and receiver |
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