CN210094781U - Alarm device for safety helmet near-electric induction - Google Patents
Alarm device for safety helmet near-electric induction Download PDFInfo
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- CN210094781U CN210094781U CN201920905254.6U CN201920905254U CN210094781U CN 210094781 U CN210094781 U CN 210094781U CN 201920905254 U CN201920905254 U CN 201920905254U CN 210094781 U CN210094781 U CN 210094781U
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Abstract
The utility model discloses an alarm device for the near-electric induction of a safety helmet, which comprises a shell, an electric field induction sensor, a high-power amplification filter circuit, a rectifying circuit, a protection alarm circuit and a power supply, wherein the electric field induction sensor, the high-power amplification filter circuit, the rectifying circuit, the protection alarm circuit and the power supply are arranged in the shell and used for inducing electric field signals, one side induction line of the electric field induction sensor extends out of the shell, the other side of the electric field induction sensor is electrically connected with the input end of the high-power amplification filter circuit, the output end of the high-power amplification filter circuit is electrically connected with the input end of the rectifying circuit, the output end of the rectifying circuit is electrically connected with the input end of the protection alarm circuit, the power supply is respectively electrically connected with the electric field induction sensor, the high-power amplification filter circuit, the rectifying circuit and the protection, the electric shock probability is reduced.
Description
Technical Field
The utility model relates to a nearly electric alarm technical field of safety helmet electrical accessory, in particular to an alarm device that is used for nearly electric response of safety helmet.
Background
Although the electric power safety regulations have a large number of safety measures for preventing electric shock in electric power operation, generally, because the safety and self-protection consciousness of operators are poor, the conditions such as the electrified part and the safety distance of a working site are not known in detail before working, so that electric power accidents occur occasionally, personal safety can be endangered when the operators approach the primary electric power equipment, and the secondary equipment running device is touched by mistake, so that the false tripping of electric power protection can be caused, and the working operation of normal equipment is influenced.
According to the requirements of electric power safety regulations and production, an electric power operator must wear a safety helmet when entering an operation site, the safety helmet avoids the risk that the head of a maintainer is seriously impacted mechanically on the head of a construction site to a certain extent, but the safety helmet cannot be used for accidents such as accidental electric shock and the like, and particularly for personnel who are not familiar with the electric power construction site and violate organizations and technical measures, the electric power accidents cannot be avoided only through the safety helmet. Therefore, the method is a necessary means for power safety production by adding electric shock prevention measures and adopting a new method to prevent electric shock accidents.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the drawback that electric power maintainer only can't avoid the electric shock accident through current safety helmet, combine nearly electric alarming function and safety helmet, provide an alarm device for the nearly electric induction of safety helmet, reduce electric power operation personnel's electric shock probability.
In order to achieve the above technical effects, the technical scheme of the utility model as follows:
the utility model provides an alarm device for nearly electric induction of safety helmet, includes the casing and sets up in inside electric field induction sensor, high power amplification filter circuit, rectifier circuit, protection alarm circuit, the power supply who is used for responding to electric field signal of casing, one side induction line of electric field induction sensor extends outward the casing, opposite side and high power amplification filter circuit's input electrical connection, high power amplification filter circuit's output and rectifier circuit's input electrical connection, rectifier circuit's output and protection alarm circuit's input electrical connection, power supply respectively with electric field inductor, high power amplification filter circuit, rectifier circuit and protection alarm circuit electrical connection.
The power supply comprises a battery and a power switch, the power switch comprises a double-pole single-throw switch SW1, the battery comprises a battery B1 and a battery B2, a pin 1 of the switch SW1 is connected with the positive electrode of the battery B1, and a pin 2 is connected with the positive electrode of the power supply; a pin 3 of the switch SW1 is connected with the cathode of the battery B2, and a pin 4 is connected with the cathode of the power supply; the negative electrode of the battery B1 and the positive electrode of the battery B2 are connected with the GND terminal at the same time.
The high-power amplification filter circuit comprises resistors R1, R6, R7 and R8, capacitors C1, C3, C4, C5, C8 and C9, an operational amplifier U1, one end of a resistor R6 is connected with a GND terminal, the other end of the resistor R6 is connected with a pin 2 of the operational amplifier U1, an input end of a resistor R1 is connected with one end of a capacitor C1 and is simultaneously connected with a pin 2 of the operational amplifier U1, an output end of the resistor R1 is connected with the other end of the capacitor C1 and is simultaneously connected with a pin 1 of the operational amplifier U1, an output end of the high-power amplification filter circuit is represented as Vac, an input end of the resistor R1 is electrically connected with an output end Vin of the electric field induction sensor, an output end of the resistor R1 is connected with a pin 3 of the operational amplifier U1, one end of the resistor R1 is connected with one side of the capacitor C1 and is simultaneously connected with a GND terminal, the other end of the resistor R1 is connected with a power supply of the operational amplifier U368, the 4 feet of the operational amplifier U1 are connected with the negative pole of the power supply; the positive pole of power supply is connected to the one end of electric capacity C4, and the GND end is connected to the other end, and the positive pole of power supply is connected to the one end of electric capacity C5, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C8, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C9, and the GND.
The rectifying circuit comprises resistors R2, R3, R4 and R5, capacitors C2, C6, C7, C10 and C11, diodes D1 and D2 and an operational amplifier U2; an input end of a resistor R5 is connected with an input end of a diode D1 and is simultaneously connected with an output end Vac of the high-power amplification filter circuit, an output end of a resistor R5 is connected with a pin 2 of an operational amplifier U2, one end of a resistor R2 is connected with a pin 2 of an operational amplifier U2, the other end of the resistor R2 is connected with a pin 1 of an operational amplifier U2, an input end of a diode D2 is connected with a pin 1 of the operational amplifier U2, an output end of a diode D2 is connected with an output end of a diode D1 and is simultaneously connected with an input end of a resistor R3, one side of a capacitor C2 is connected with one side of a resistor R4 and is simultaneously connected with an output end of a resistor R3, the; the output end of the rectifying circuit is represented as Vrec, an 8-pin of an operational amplifier U2 is connected with the positive electrode of a power supply, a 4-pin of an operational amplifier U2 is connected with the negative electrode of the power supply, and a 3-pin of an operational amplifier U2 is connected with the GND end; the positive pole of power supply is connected to electric capacity C6's one end, and the GND end is connected to the other end, and the positive pole of power supply is connected to electric capacity C7's one end, and the GND end is connected to the other end, and power supply's negative pole is connected to electric capacity C10's one end, and the GND end is connected to the other end, and power supply's negative pole is connected to electric capacity C11's one end, and the GND end is connected to the other end, and the high.
The protection alarm circuit comprises resistors R9, R11 and R12, an adjustable resistor R10, capacitors C12 and C13, an operational amplifier U4, a MOSFET tube Q1, a buzzer S1, a pin 3 of the operational amplifier U4 is connected with an output end Vrec of a rectification circuit, one side of the resistor R12 is connected with the anode of a battery power supply, the other side of the resistor R is connected with a pin 2 of the operational amplifier U4, one side of the adjustable resistor R10 is connected with a GND end, the other side of the adjustable resistor R10 is connected with a pin 2 of the operational amplifier U4, one end of the resistor R11 is connected with the anode of the battery power supply, the other end of the resistor R11 is connected with a pin 1 of the operational amplifier, the grid side of the MOSFET Q1 is connected, one side of the source of the MOSFET tube Q1 is connected with a GND end, one side of the drain is connected with one end of the buzzer S1, the other end of the buzzer S1 is connected with one side of the resistor R9, the other side of the resistor R9 is, one side of the capacitor C12 is connected with one side of the C13 and is also connected with the positive electrode of the battery power supply, and the other side of the capacitor C12 is connected with the other side of the C13 and is also connected with the GND terminal.
The electric field induction sensor reads an electric field signal near a charged conductor, the electric field signal is converted into an alternating voltage signal, the alternating voltage signal passes through the high-power amplification filter circuit, a high-frequency interference part is filtered, a low-frequency alternating signal is amplified, the obtained signal is input into the rectifier circuit, the rectifier circuit rectifies a sampling signal into a direct current signal and then transmits the direct current signal to the protection alarm circuit, the direct current signal is compared with a protection threshold value of the operational amplifier U4, a power-on signal and a power-off signal are sent out according to the size of the direct current signal, the operational amplifier U4 outputs a high-level signal when power is on, the operational amplifier U4 outputs a low-level signal when power is off, and the high-level signal can make a buzzer for alarming sound and indicates that.
The upper surface of a shell of the near-electric induction alarm device is provided with a power switch gear button, a voltage level adjusting gear button and an alarm volume output which are matched with an electric field induction sensor, a high-power amplification filter circuit, a rectifying circuit, a protection alarm circuit and a power supply, the alarm volume output is provided with a plurality of round holes for sound amplification, the diameters of the round holes are the same, the power switch gear button, the voltage level adjusting gear button and the alarm volume output are integrally formed with the shell to ensure good insulation and mechanical strength, the voltage level adjusting gear switch is provided with 3 voltage level adjusting gears which respectively represent a gear for 220V voltage level adjustment, a gear for 10kV voltage level adjustment and a gear for 35kV voltage level adjustment, the shell of the near-electric induction alarm device is fixedly embedded in the center of the top end of an outer protective cap of the safety cap, when the alarm is used, an operator wearing the alarm can change the sensitivity of the alarm according to different adjustment gears of live field voltage grades
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the utility model discloses an alarm device for nearly electric induction of safety helmet, high power amplifying and filtering circuit has been adopted among the alarm device, the interference of high frequency interference signal to using on-the-spot actual signal has been avoided, guarantee sampling quality, be provided with different voltage level adjustment gear in addition, can make the operating personnel who wears the device change the sensitivity of alarm according to the different adjustment gear of electrified on-the-spot voltage level when using, overcome the drawback that electric power maintainer only can't avoid the electric shock accident through current safety helmet, nearly electric alarm function combines with the safety helmet, reduce electric power operating personnel's electric shock probability.
Drawings
FIG. 1 is a schematic view of an upper cover on the outer surface of an alarm device for the proximity sensing of a safety helmet;
FIG. 2 is an internal schematic block diagram of a near-electric induction alarm device for a safety helmet;
FIG. 3 is a diagram of the connection structure of the electric field sensor and the high power amplifying and filtering circuit of the alarm device;
FIG. 4 is a schematic diagram of a rectifier circuit of the alarm device;
FIG. 5 is a schematic diagram of a protective alarm circuit of the alarm device;
FIG. 6 is a schematic diagram of the connection of a power switch and a battery;
fig. 7 is a schematic view of the alarm device applied to the helmet.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Referring to fig. 1, an alarm device for helmet near-electric induction comprises a shell 5, an electric field induction sensor, a high-power amplification filter circuit, a rectification circuit, a protection alarm circuit and a power supply, wherein the electric field induction sensor, the high-power amplification filter circuit, the rectification circuit, the protection alarm circuit and the power supply are arranged in the shell 5 and used for inducing electric field signals, the induction line 1 on one side of the electric field induction sensor extends out of the shell, referring to fig. 2, the other side of the electric field induction sensor is electrically connected with the input end of the high-power amplification filter circuit, the output end of the high-power amplification filter circuit is electrically connected with the input end of the rectification circuit, the output end of the rectification circuit is electrically connected with the input end of the protection alarm circuit.
Referring to fig. 3, the electric field induction sensor is shown as U3, the frequency of the electric field signal induced by the electric field induction sensor is 50HZ, one side of the electric field induction sensor is connected with the GND terminal, the output voltage signal of the electric field induction sensor is shown as Vin and is electrically connected with the input terminal of the high power amplification filter circuit, and the 50HZ electric field signal is converted into a voltage signal by the electric field induction sensor and is used as the input of the high power amplification filter circuit. The high-power amplification filter circuit comprises resistors R1, R6, R7 and R8, capacitors C1, C3, C4, C5, C8 and C9, an operational amplifier U1, one end of a resistor R6 is connected with a GND terminal, the other end of the resistor R6 is connected with a pin 2 of the operational amplifier U1, an input end of a resistor R1 is connected with one end of a capacitor C1 and is simultaneously connected with a pin 2 of the operational amplifier U1, an output end of the resistor R1 is connected with the other end of the capacitor C1 and is simultaneously connected with a pin 1 of the operational amplifier U1, an output end of the high-power amplification filter circuit is represented as Vac, an input end of the resistor R1 is electrically connected with an output end Vin of the electric field induction sensor, an output end of the resistor R1 is connected with a pin 3 of the operational amplifier U1, one end of the resistor R1 is connected with one side of the capacitor C1 and is simultaneously connected with a GND terminal, the other end of the resistor R1 is connected with a power supply of the operational amplifier U368, the 4 feet of the operational amplifier U1 are connected with the negative pole of the power supply; the positive pole of power supply is connected to the one end of electric capacity C4, and the GND end is connected to the other end, and the positive pole of power supply is connected to the one end of electric capacity C5, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C8, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C9, and the GND.
Referring to fig. 4, the rectifier circuit includes resistors R2, R3, R4 and R5, capacitors C2, C6, C7, C10 and C11, diodes D1 and D2, and an operational amplifier U2; an input end of a resistor R5 is connected with an input end of a diode D1 and is simultaneously connected with an output end Vac of the high-power amplification filter circuit, an output end of a resistor R5 is connected with a pin 2 of an operational amplifier U2, one end of a resistor R2 is connected with a pin 2 of an operational amplifier U2, the other end of the resistor R2 is connected with a pin 1 of an operational amplifier U2, an input end of a diode D2 is connected with a pin 1 of the operational amplifier U2, an output end of a diode D2 is connected with an output end of a diode D1 and is simultaneously connected with an input end of a resistor R3, one side of a capacitor C2 is connected with one side of a resistor R4 and is simultaneously connected with an output end of a resistor R3, the; the output end of the rectifying circuit is represented as Vrec, an 8-pin of an operational amplifier U2 is connected with the positive electrode of a power supply, a 4-pin of an operational amplifier U2 is connected with the negative electrode of the power supply, and a 3-pin of an operational amplifier U2 is connected with the GND end; the positive pole of power supply is connected to electric capacity C6's one end, and the GND end is connected to the other end, and the positive pole of power supply is connected to electric capacity C7's one end, and the GND end is connected to the other end, and power supply's negative pole is connected to electric capacity C10's one end, and the GND end is connected to the other end, and power supply's negative pole is connected to electric capacity C11's one end, and the GND end is connected to the other end, and the high.
Referring to fig. 5, the protection alarm circuit includes resistors R9, R11 and R12, an adjustable resistor R10, capacitors C12 and C13, an operational amplifier U4, a MOSFET tube Q1, a buzzer S1, a pin 3 of the operational amplifier U4 is connected to an output terminal Vrec of the rectifier circuit, one side of the resistor R12 is connected to the positive electrode of the battery power supply, the other side is connected to a pin 2 of the operational amplifier U4, one side of the adjustable resistor R10 is connected to the GND terminal, the other side is connected to a pin 2 of the operational amplifier U4, one end of the resistor R11 is connected to the positive electrode of the battery power supply, the other end is connected to a pin 1 of the operational amplifier, and is connected to one side of the gate of the MOSFET Q1, one side of the source of the MOSFET tube Q1 is connected to the GND terminal, one side of the drain is connected to one end of the buzzer S1, the other end of the buzzer S1 is connected to one side of the resistor R9, the other side of the resistor, the 4 feet of the operational amplifier U4 are connected with the negative pole of the battery power supply, one side of the capacitor C12 is connected with one side of the C13 and is also connected with the positive pole of the battery power supply, and the other side of the capacitor C12 is connected with the other side of the C13 and is also connected with the GND end.
As shown in fig. 2 and fig. 6, the power supply includes a battery and a power switch, the power switch includes a double-pole single-throw switch SW1, the battery includes a battery B1 and a battery B2, pin 1 of the switch SW1 is connected to the positive pole of the battery B1, and pin 2 is connected to the positive pole of the power supply; a pin 3 of the switch SW1 is connected with the cathode of the battery B2, and a pin 4 is connected with the cathode of the power supply; the negative electrode of the battery B1 and the positive electrode of the battery B2 are connected with the GND terminal at the same time.
The electric field induction sensor reads an electric field signal near a charged conductor, the electric field signal is converted into an alternating voltage signal, the alternating voltage signal passes through the high-power amplification filter circuit, a high-frequency interference part is filtered, a low-frequency alternating signal is amplified, the obtained signal is input into the rectifier circuit, the rectifier circuit rectifies a sampling signal into a direct current signal and then transmits the direct current signal to the protection alarm circuit, the direct current signal is compared with a protection threshold value of the operational amplifier U4, a power-on signal and a power-off signal are sent out according to the size of the direct current signal, the operational amplifier U4 outputs a high-level signal when power is on, the operational amplifier U4 outputs a low-level signal when power is off, and the high-level signal can make a buzzer for alarming sound and indicates that.
Referring to fig. 1, a power switch gear button 4, a voltage level adjusting gear button 3 and an alarm volume output 2 which are matched with an electric field induction sensor, a high-power amplification filter circuit, a rectifying circuit, a protection alarm circuit and a power supply are arranged on the upper surface of a shell of the near-electric induction alarm device, a plurality of round holes for sound amplification are arranged on the alarm volume output 2, the diameters of the round holes are the same, the power switch gear button 4, the voltage level adjusting gear button 3, the alarm volume output 2 and the shell 5 are integrally formed, good insulation and mechanical strength are ensured, as shown in fig. 1, 3 voltage level adjusting gears are arranged on the voltage level adjusting gear button 3 and respectively represent a gear for 220V voltage level adjustment, a gear for 10kV voltage level adjustment and a gear for 35kV voltage level adjustment, as shown in fig. 7, the shell 5 of the near-electric induction alarm device is fixedly embedded in the center of the top end of an outer protective cap of a safety cap 7, when the alarm is used, an operator wearing the alarm can change the sensitivity of the alarm according to different adjustment gears of live field voltage levels.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides an alarm device for nearly electric induction of safety helmet, its characterized in that, includes the casing and sets up electric field induction sensor, high power amplification filter circuit, rectifier circuit, protection alarm circuit, the power supply who is used for responding to electric field signal in the casing inside, one side induction line of electric field induction sensor extends outward the casing, opposite side and high power amplification filter circuit's input electrical connection, high power amplification filter circuit's output and rectifier circuit's input electrical connection, rectifier circuit's output and protection alarm circuit's input electrical connection, power supply respectively with electric field inductor, high power amplification filter circuit, rectifier circuit and protection alarm circuit electrical connection.
2. The warning device for helmet proximity sensing of claim 1, wherein the power supply comprises a battery and a power switch, the power switch comprises a double-pole single-throw switch SW1, the battery comprises a battery B1 and a battery B2, a pin 1 of the switch SW1 is connected to a positive pole of the battery B1, and a pin 2 is connected to a positive pole of the power supply; a pin 3 of the switch SW1 is connected with the cathode of the battery B2, and a pin 4 is connected with the cathode of the power supply; the negative electrode of the battery B1 and the positive electrode of the battery B2 are connected with the GND terminal at the same time.
3. The alarm device for helmet proximity electric induction according to claim 1, wherein said high power amplifying filter circuit comprises resistors R1, R6, R7 and R8, capacitors C1, C3, C4, C5, C8 and C9, an operational amplifier U1, one end of a resistor R6 is connected to GND terminal, the other end is connected to pin 2 of said operational amplifier U1, an input terminal of a resistor R1 is connected to one end of a capacitor C1 and is simultaneously connected to pin 2 of an operational amplifier U1, an output terminal of a resistor R1 is connected to the other end of a capacitor C1 and is simultaneously connected to pin 1 of an operational amplifier U1, an output terminal of said high power amplifying filter circuit is denoted Vac, an input terminal of a resistor R1 is electrically connected to Vin of the electric field induction sensor, an output terminal of a resistor R1 is connected to pin 3 of an operational amplifier U1, one end of a resistor R1 is connected to one side of a capacitor C1 and is simultaneously connected to GND terminal of said operational amplifier U1, the pin 8 of the operational amplifier U1 is connected with the positive electrode of the power supply, and the pin 4 of the operational amplifier U1 is connected with the negative electrode of the power supply; the positive pole of power supply is connected to the one end of electric capacity C4, and the GND end is connected to the other end, and the positive pole of power supply is connected to the one end of electric capacity C5, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C8, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C9, and the GND.
4. The warning device for the helmet near-electricity induction according to claim 1, wherein the rectification circuit comprises resistors R2, R3, R4 and R5, capacitors C2, C6, C7, C10 and C11, diodes D1 and D2, an operational amplifier U2; an input end of a resistor R5 is connected with an input end of a diode D1 and is simultaneously connected with an output end Vac of the high-power amplification filter circuit, an output end of a resistor R5 is connected with a pin 2 of an operational amplifier U2, one end of a resistor R2 is connected with a pin 2 of an operational amplifier U2, the other end of the resistor R2 is connected with a pin 1 of an operational amplifier U2, an input end of a diode D2 is connected with a pin 1 of the operational amplifier U2, an output end of a diode D2 is connected with an output end of a diode D1 and is simultaneously connected with an input end of a resistor R3, one side of a capacitor C2 is connected with one side of a resistor R4 and is simultaneously connected with an output end of a resistor R3, the; the output end of the rectifying circuit is represented as Vrec, an 8-pin of an operational amplifier U2 is connected with the positive electrode of a power supply, a 4-pin of an operational amplifier U2 is connected with the negative electrode of the power supply, and a 3-pin of an operational amplifier U2 is connected with the GND end; the positive pole of power supply is connected to the one end of electric capacity C6, and the GND end is connected to the other end, and the positive pole of power supply is connected to the one end of electric capacity C7, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C10, and the GND end is connected to the other end, and the negative pole of power supply is connected to the one end of electric capacity C11, and the GND.
5. The warning device for helmet proximity induction according to claim 1, wherein the protection warning circuit comprises resistors R9, R11 and R12, an adjustable resistor R10, capacitors C12 and C13, an operational amplifier U4, a MOSFET tube Q1, a buzzer S1, a 3 pin of the operational amplifier U4 is connected with the output end Vrec of the rectification circuit, one side of the resistor R12 is connected with the positive pole of the battery power supply, the other side is connected with the 2 pin of the operational amplifier U4, one side of the adjustable resistor R10 is connected with the GND terminal, the other side is connected with the 2 pin of the operational amplifier U4, one end of the resistor R11 is connected with the positive pole of the battery power supply, the other end of the resistor R11 is connected with the 1 pin of the operational amplifier, the other side of the grid of the MOSFET tube Q1 is connected, the source side of the MOSFET tube Q1 is connected with the GND terminal, the drain side of the drain is connected with one end of the buzzer S1, the other end of the resistor R4642 is connected with one side of, the pin 8 of the operational amplifier U4 is connected with the positive electrode of the battery power supply, the pin 4 of the operational amplifier U4 is connected with the negative electrode of the battery power supply, one side of the capacitor C12 is connected with one side of the C13 and is simultaneously connected with the positive electrode of the battery power supply, and the other side of the capacitor C12 is connected with the other side of the C13 and is simultaneously connected with the GND terminal.
6. The warning device for helmet near-induction according to claim 1, wherein a power switch gear button, a voltage level adjusting gear button and an alarm volume output which are matched with the electric field induction sensor, the high-power amplification filter circuit, the rectifying circuit, the protection warning circuit and the power supply are arranged on the upper surface of a shell of the warning device near-induction, and the power switch gear button, the voltage level adjusting gear button and the alarm volume output are integrally formed with the shell.
7. The warning device for helmet proximity sensing of claim 6, wherein the alarm volume output is configured with a plurality of round holes for sound amplification, and the round holes have the same diameter.
8. The warning device for helmet near-induction as claimed in claim 6, wherein the voltage level adjustment gear button is provided with 3 voltage level adjustment gears, which respectively represent a gear for 220V voltage level adjustment, a gear for 10kV voltage level adjustment and a gear for 35kV voltage level adjustment.
9. The warning device for the helmet proximity sensing of claim 1, wherein the housing of the warning device is fixedly embedded in the center of the top end of the outer protective cap of the helmet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905254.6U CN210094781U (en) | 2019-06-14 | 2019-06-14 | Alarm device for safety helmet near-electric induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905254.6U CN210094781U (en) | 2019-06-14 | 2019-06-14 | Alarm device for safety helmet near-electric induction |
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| Publication Number | Publication Date |
|---|---|
| CN210094781U true CN210094781U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920905254.6U Active CN210094781U (en) | 2019-06-14 | 2019-06-14 | Alarm device for safety helmet near-electric induction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110179199A (en) * | 2019-06-14 | 2019-08-30 | 广东电网有限责任公司 | A kind of warning device for the nearly electric induction of safety cap |
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2019
- 2019-06-14 CN CN201920905254.6U patent/CN210094781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110179199A (en) * | 2019-06-14 | 2019-08-30 | 广东电网有限责任公司 | A kind of warning device for the nearly electric induction of safety cap |
| CN110179199B (en) * | 2019-06-14 | 2024-04-12 | 广东电网有限责任公司 | Alarm device for near-electric induction of safety helmet |
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