CN210983662U - Electromagnetic place alarm device - Google Patents
Electromagnetic place alarm device Download PDFInfo
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- CN210983662U CN210983662U CN202020066552.3U CN202020066552U CN210983662U CN 210983662 U CN210983662 U CN 210983662U CN 202020066552 U CN202020066552 U CN 202020066552U CN 210983662 U CN210983662 U CN 210983662U
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Abstract
The utility model relates to an electromagnetism place alarm device, including magnetic field detection circuitry, the electric field detection circuitry who is connected with magnetic field detection circuitry, the circulation switching circuit who is connected with electric field detection circuitry, the audio alert circuit who is connected with electric field detection circuitry and circulation switching circuit to and the power of being connected with audio alert circuit. The utility model discloses can in time discover the electromagnetic field intensity of staff position, just through audio alert, remind the operation personnel in time to withdraw the workplace or take necessary control measure to ensure operation personnel's personal safety or healthy.
Description
Technical Field
The utility model relates to a relevant place of all electromagnetic fields relates to all fields that have the electromagnetic field.
Background
In this electrified age, electricity is ubiquitous, and electromagnetic fields exist around electrical devices that can cause unpredictable damage to the human body when they exceed standards for human capability. The high-voltage live equipment is close to, if the high-voltage live equipment is not in danger, accident accidents of people electric shock and death can occur when the high-voltage live equipment is further close to, even the running equipment is tripped, and the reliability of power supply of a power system is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electromagnetic field detects alarm circuit, the technical scheme of the utility model specifically as follows:
an electromagnetic place alarm device comprises a magnetic field detection circuit, an electric field detection circuit connected with the magnetic field detection circuit, a circulating switching circuit connected with the electric field detection circuit, a voice alarm circuit connected with the electric field detection circuit and the circulating switching circuit, and a power supply connected with the voice alarm circuit.
Furthermore, the output end of the voltage comparator is connected with a diode, one end of the diode is connected with the input end of the first triode, one end of the first triode is grounded through a resistor, the other end of the first triode is connected with the second triode, and one end of the diode is also connected with the first capacitor;
one end of the other two ends of the second triode is connected with a power supply, the other end of the second triode is connected with one end of the automatic switching relay, and the other end of the second triode is also connected with a second capacitor;
the device comprises a metal wafer, a charging device, an MOS (metal oxide semiconductor) tube, a third triode, a fourth triode, a resistor and a resistor, wherein the charging device is insulated from the metal wafer in the air, the MOS tube is used for detecting voltage and is connected with the metal wafer, the MOS tube is connected with one end of the third triode, one end of the other two ends of the third triode is connected with the fourth triode, one end of the fourth triode is connected with the resistor through another diode, and the MOS tube is also;
the second ends of the other two ends of the third triode are connected with a third capacitor and the other end of the automatic switching relay, the automatic switching relay is connected with two recording modules, the two recording modules are respectively connected with two voice amplification triodes, and one end of each recording module and one end of each two voice amplification triodes are connected with the third capacitor C21; the cyclic switching circuit includes an automatically switching relay.
Furthermore, in the circulating switching circuit, the relay is switched once every 1.5S to the electric field voice module, and when the relay is in a strong electric field place, an electric field standard exceeding voice signal is reported; and switching to a magnetic field voice module, and reporting a magnetic field standard exceeding voice signal when the magnetic field voice module is in a strong magnetic field place.
Furthermore, the voice alarm circuit consists of a voice amplification triode consisting of two music modules and two triodes; switching to an electric field voice module, and reporting an electric field standard exceeding voice signal when the electric field voice module is in a strong electric field; and switching to a magnetic field voice module, and reporting a magnetic field standard exceeding voice signal when the magnetic field voice module is in a strong magnetic field place.
Furthermore, the power supply comprises a power supply indicating circuit consisting of a rechargeable lithium battery, a resistor and a light emitting diode, a power supply control switch, a power supply conversion module and a charging interface.
Compared with the prior art, the beneficial effects of the utility model are specifically as follows:
the utility model discloses can in time discover the electromagnetic field intensity of staff position, just through audio alert, remind the operation personnel in time to withdraw the workplace or take necessary control measure to ensure operation personnel's personal safety or healthy.
Drawings
Fig. 1 is a circuit diagram of the apparatus of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the electromagnetic field warning device of the present embodiment includes a magnetic field detection circuit 1, an electric field detection circuit 2, a circulation switching circuit 3, a voice warning circuit 4, and a power supply 5. The concrete composition is as follows:
the magnetic field inductive probe C is connected with the input end of a voltage comparator O, the output end of the voltage comparator O is connected with the positive electrode of a diode D11, the negative electrode of a diode D11 is connected with the b electrode of a triode T11, the e electrode of the triode T11 is grounded through a resistor R14, the C electrode is connected with the b electrode of a triode T12 through a resistor R15, the negative electrode of the diode D11 is further connected with a capacitor C11, a resistor R13 is connected with the capacitor C11 in parallel, and resistors R11 and R12 are connected with the power supply end of the voltage comparator O in parallel, so that the potential of the O input end is zero.
The e pole of the triode T12 is connected with the power supply 2.5V +, the C pole is connected with the input end of the automatic switching relay J, and the end is also connected with the capacitor C12 and the resistor R16 (which is connected with the capacitor C12 in parallel) and then connected with 2.5V-.
The charged device in the air is insulated from the detection metal wafer P, the MOS tube T21 detects the voltage, the G pole of the MOS tube T21 is connected with the detection metal wafer P, the S pole is connected with 2.5V +, the D pole is connected with the b pole of the triode T22, the e pole of the triode T22 is connected with 2.5V-after being connected in series through D21 and R22, and R21 is connected between the b pole of the T22 and 2.5V-. The c-pole of the transistor T22 and the b-pole of the transistor T23 are connected via R23. The e pole of the triode T23 is connected with 2.5V + and the C pole of the triode T23 in parallel through a resistor R24 and a capacitor C21 and then connected with 2.5V-. The C pole of the transistor T23 is also connected to the other end of the auto-switching relay J.
The automatic switching relay J is connected with two recording modules IC31 and IC32, the two recording modules IC31 and IC32 are respectively connected with the b poles of two voice amplification triodes T31 and T32, one end of the loudspeaker is connected with 2.5V +, the other end of the loudspeaker is connected with the c poles of G31 and G32, the e poles of T31 and T32 and the negative power supply terminals of IC31 and IC32 are connected with 2.5V-, and the positive power supply terminal is connected with the output connection point of J.
One end of a power supply B is provided with a switch K, the power supply is connected with a resistor R01 and a light emitting diode in parallel and supplies power to the device through a DC/DC converter, the converter is connected with another automatically-switched relay J1 in parallel, and a J1 relay contact 3s is switched once and connected with a magnetic field detection circuit 1, an electric field detection circuit 2 and a circulating switching circuit 3 in parallel.
Since the charged device is insulated from the metal wafer P in the air, it is equivalent to a capacitor CP1The S pole and the D pole of the MOS transistor T21(3DO1 or BS250) are also insulated and are also equivalent to a capacitor CP2The D pole is also insulated from the human body and is also equivalent to a capacitor CP3The person is grounded to the ground. I.e. live equipment, CP1、CP2、CP3The circuit forms a loop with the human body, the alternating voltage changed on the G pole and the D pole of the MOS transistor T21, the resistance between the S pole and the D pole is changed along with the change, the triode T22 is conducted when the resistance is reduced, then the triode T23 is conducted to supply power to the capacitor C21, namely, the alternating voltage is provided for the recording module IC32For supplying working power.
When the electric field voice module is switched to and is in a strong electric field, the power supply on the capacitor C21 is supplied to the recording module IC32 to enable the recording module IC32 to work, the triode T32 works to report that the electric field exceeds the standard! "speech signal. When the voice module is switched to the magnetic field voice module and is in a strong magnetic field place, the power supply on the capacitor C12 is supplied to the recording module IC31 to enable the recording module IC31 to work, the triode T31 works to report that the magnetic field exceeds the standard! "speech signal.
In this embodiment, the resistances of the input terminals R11 and R12 of the voltage comparator o are the same, and provide a zero potential for the operational amplifier, the magnetic field detection device is a coil, and when there is no electromagnetic induction, it is equivalent to a very small resistance, and the dc potentials at the two terminals are the same. When electromagnetism passes through the coil, the input end of the voltage comparator is added, when the detected value is larger than the threshold value, high potential is output, the diode D11 is conducted, the capacitor C11 is charged, meanwhile Ib is provided for the T11, Ic and Ic are produced to be Ib of the T12, at the moment, the T12 is conducted, the C12 capacitor can reduce the internal resistance of a power supply for supplying power to the IC31, and the R16 can enable the electric charge on the C12 to be released quickly after the electromagnetism leaves an electromagnetic place and does not report signals again.
When an alternating current electric field is induced, the resistance between the poles of the MOS transistor T21(3DO1 or BS250) D, S changes, when the voltage change of the resistor R21 rises, the triode T22 is conducted, the triode T23 is conducted, the capacitor C21 can reduce the internal resistance of a power supply for supplying power to the IC32 circuit, and after the resistor R24 leaves the electric field, the charge on the capacitor C21 can be released quickly, so that the signal can not be reported again.
The automatically switched relay J1 switches every 1.5S. Switching to an electric field voice module, and playing' the electric field exceeds the standard! "speech signal. When the magnetic field voice module is switched to and is in a strong magnetic field place, the' magnetic field exceeds the standard! "speech signal.
The power supply part comprises a power supply indicating circuit consisting of a rechargeable lithium battery B, resistors R01 and L ED, a power supply control switch K, DC/DC converter and a charging interface CK.
IC1, IC2 are two the same recording modules, and the content of broadcasting can record by oneself as required, all work in the automatic mode of broadcasting of switching on power.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An electromagnetic site alarm device, characterized in that: the device comprises a magnetic field detection circuit, an electric field detection circuit connected with the magnetic field detection circuit, a circulating switching circuit connected with the electric field detection circuit, a voice alarm circuit connected with the electric field detection circuit and the circulating switching circuit, and a power supply connected with the voice alarm circuit.
2. The electromagnetic venue alert device of claim 1, wherein: the output end of the voltage comparator is connected with a diode, one end of the diode is connected with the input end of the first triode, one end of the first triode is grounded through a resistor, the other end of the first triode is connected with the second triode, and one end of the diode is also connected with the first capacitor;
one end of the other two ends of the second triode is connected with a power supply, the other end of the second triode is connected with one end of the automatic switching relay, and the other end of the second triode is also connected with a second capacitor;
the device comprises a metal wafer, a charging device, an MOS (metal oxide semiconductor) tube, a third triode, a fourth triode, a resistor and a resistor, wherein the charging device is insulated from the metal wafer in the air, the MOS tube is used for detecting voltage and is connected with the metal wafer, the MOS tube is connected with one end of the third triode, one end of the other two ends of the third triode is connected with the fourth triode, one end of the fourth triode is connected with the resistor through another diode, and the MOS tube is also;
the second ends of the other two ends of the third triode are connected with a third capacitor and the other end of the automatic switching relay, the automatic switching relay is connected with two recording modules, the two recording modules are respectively connected with two voice amplification triodes, and one end of each recording module and one end of each two voice amplification triodes are connected with the third capacitor C21; the cyclic switching circuit includes an automatically switching relay.
3. The electromagnetic venue alert device of claim 1, wherein: in the circulating switching circuit, the relay is switched once every 1.5S to be switched to the electric field voice module, and when the relay is in a strong electric field place, an electric field standard exceeding voice signal is reported; and switching to a magnetic field voice module, and reporting a magnetic field standard exceeding voice signal when the magnetic field voice module is in a strong magnetic field place.
4. The electromagnetic venue alert device of claim 1, wherein: the voice alarm circuit consists of a voice amplification triode consisting of two music modules and two triodes; switching to an electric field voice module, and reporting an electric field standard exceeding voice signal when the electric field voice module is in a strong electric field; and switching to a magnetic field voice module, and reporting a magnetic field standard exceeding voice signal when the magnetic field voice module is in a strong magnetic field place.
5. The electromagnetic venue alert device of claim 1, wherein: the power supply comprises a power supply indicating circuit consisting of a rechargeable lithium battery, a resistor and a light emitting diode, a power supply control switch, a power supply conversion module and a charging interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066552.3U CN210983662U (en) | 2020-01-13 | 2020-01-13 | Electromagnetic place alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066552.3U CN210983662U (en) | 2020-01-13 | 2020-01-13 | Electromagnetic place alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210983662U true CN210983662U (en) | 2020-07-10 |
Family
ID=71460375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020066552.3U Active CN210983662U (en) | 2020-01-13 | 2020-01-13 | Electromagnetic place alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210983662U (en) |
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2020
- 2020-01-13 CN CN202020066552.3U patent/CN210983662U/en active Active
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