CN205562663U - Test nearly electric alarm of electric type - Google Patents
Test nearly electric alarm of electric type Download PDFInfo
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- CN205562663U CN205562663U CN201620366121.2U CN201620366121U CN205562663U CN 205562663 U CN205562663 U CN 205562663U CN 201620366121 U CN201620366121 U CN 201620366121U CN 205562663 U CN205562663 U CN 205562663U
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Abstract
The utility model relates to a test the electric installation, concretely relates to test nearly electric alarm of electric type, this alarm include signal collector, its characterized in that, still including returning circuit, door circuit, gate circuit shaping circuit, oscillation circuit, warning circuit, switch self checking circuit, testing electric switch and DC power supply, signal collector connects return circuit, and return circuit, door circuit, gate circuit shaping circuit, oscillation circuit, warning circuit, switch self checking circuit connect gradually, and switch self checking circuit connects through testing electric switch and DC power supply, constitutes and tests electric return circuit. The utility model discloses increase self -checking function, solved the low problem of electroscope reliability.
Description
Technical field
The utility model relates to a kind of electroscopic device, is specifically related to a kind of electrical verification type alarming in short range of electric power device.
Background technology
The technical measures chapters and sections of State Grid Corporation of China's version " electric power safety working regulation " guarantee safety in 2013 specify: power failure, electrical verification, ground connection；Above-mentioned measure is by operations staff or has the right to perform personnel's execution of operation.Maintainer's not electrical verification before maintenance, that in real work, electric shock is hurt is maintainer.Safety is the most important thing in production process, is even more important dangerous operation, must comply with power failure, electrical verification, ground connection when high-tension line interruption maintenance and starts the regulation of operation again, and electrical verification operation must be completed by electroscope.Electroscope is used to detect one of conventional electric power safety instrument that whether there is voltage on power equipment, power failure equipments the most really no-voltage is clearly verified by electroscope, carry out other operations again, to prevent charged installation earth connection, to touch the generation of the electricity serious accidents such as equipment by mistake, therefore, in power industry, galvanoscopic effect is very important.Due to around charging equipment with the presence of electric field, non-contact type electricity checking device need not directly contact with high-voltage line when carrying out electrical verification work, uses conveniently, safely.Electroscope on domestic market is of a great variety, and spread in performance is uneven, or owing to a variety of causes causes electroscope malfunctioning, impact is normal to be used.There is following potential safety hazard in existing non-contact type electricity checking device: if 1 dead battery, electroscope can be caused to judge by accident, there is certain potential safety hazard, reliability is low；If 2 electroscopes itself break down, user of service cannot make correct judgement, and reliability is relatively low；3, temperature influence, can there is the phenomenon of null offset in alarm, cause erroneous judgement, and reliability is low.
Utility model content
The utility model provides a kind of electrical verification type alarming in short range of electric power device, adds self-checking function, solves the problem that electroscope reliability is low.
In sum, in order to achieve the above object, the technical solution adopted in the utility model is as follows, a kind of electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that, also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and dc source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit is sequentially connected with, switch self-checking circuit is connected by electrical verification switch and dc source, composition electrical verification loop.
Further, this alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects dc source by self-test switch, forms main circuit self-inspection loop.
Further, described return circuit is made up of PNP type triode and two resistance, and the base stage of PNP type triode and colelctor electrode connect a resistance respectively, and emitter stage connects electrical verification by diode and switchs.
Further, described door circuit is made up of a resistance and an electric capacity, and resistance and electric capacity connect the input of next stage circuit, and the negative pole of electric capacity connects the negative pole of power supply.
Further, described gate circuit shaping circuit is to be in series by two not gates.
Further, described oscillating circuit is made up of NAND gate one not gate of series connection, and output one resistance of series connection of NAND gate connects its not gate input, and output one electric capacity of series connection of not gate connects the input of NAND gate and the input of warning circuit simultaneously.
Further, described warning circuit is made up of a NPN type triode, a red light emitting diodes, an alarm and two resistance, NPN type triode base stage and emitter stage are connected a resistance respectively, emitter stage connects red light emitting diodes by resistance and connects power cathode simultaneously, connects an alarm between emitter stage and power cathode.
Further, described switch self-checking circuit is made up of two NPN type triode, three resistance and a green LED, electrical verification switch is connected after colelctor electrode one resistance of series connection of previous stage triode, the emitter stage of previous stage triode connects power cathode, the colelctor electrode of previous stage triode is simultaneously connected with the base stage of rear stage triode, the emitter stage of rear stage triode is connected with green LED by one resistance of series connection, the negative pole of green LED connects power cathode, and the colelctor electrode of rear stage triode connects electrical verification switch.
Further, described main circuit self-checking circuit is made up of a normal open switch and a diode, and the positive pole of normal open switch and diode is simultaneously connected with self-test switch, and the other end of normal open switch connects signal picker, and diode cathode connects return circuit.
Have the beneficial effect that produced by the utility model:
The utility model uses self-test switch, voltage self-checking circuit and main circuit self-checking circuit, first self-inspection is carried out before measuring Devices to test, utilize the result that voltage detector detects, its output is high level or low level is to control the break-make of normal open switch, close if high level then controls normal open switch by inductance coil, the electricity checking power supply in conjunction with main circuit and switch self-checking circuit is the most sufficient, also examine whether main circuit exists fault simultaneously, improve the reliability of test, prevent because of electric quantity of power supply deficiency that to be mistaken for Devices to test not charged, there is electric shock accidents.In the utility model, owing to return circuit exists the phenomenon of null offset, the factor affecting null offset is mainly the stability of temperature and supply voltage, in order to suppress null offset, the utility model increases a diode between main circuit self-checking circuit and return circuit, uses diode compensation mode to stablize quiescent point, suppresses null offset, prevent the erroneous judgement of test result, elimination maintainer from contacting feared state of mind during electric equipment.Electrical verification loop of the present utility model can verify that Devices to test is the most charged, and can the most normally work by this alarm of self-inspection, the utility model also add self-test switch, voltage self-checking circuit and main circuit self-checking circuit, strengthens self-checking function, solves the problem that electroscope reliability is low.
Accompanying drawing explanation
Fig. 1 is circuit flow chart of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model；
Fig. 3 is the schematic diagram that the utility model is encapsulated as finished product.
Detailed description of the invention
The utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings, in order to be better understood from the utility model, but protection domain of the present utility model is not limited to this.
As shown in Figure 1, a kind of electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that, also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and dc source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit are sequentially connected with, switch self-checking circuit is connected by electrical verification switch and dc source, forms electrical verification loop.This alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects dc source by self-test switch, forms main circuit self-inspection loop.
Fig. 2 is circuit diagram of the present utility model, a kind of electrical verification type alarming in short range of electric power device, the positive source of this alarm connects the Sb end points of electrical verification switch S2, the Sa end points of electrical verification switch S2 connects the emitter stage of PNP type triode Q2, the base stage of triode Q2 connects one end of resistance R4, colelctor electrode series connection one resistance R6 connect power cathode of triode Q2, forms return circuit 2；The emitter stage of triode Q2 is as one end of the output connection resistance R5 of return circuit 2, the input of the other end AND circuit shaping circuit 4 of resistance R5 connects, connect between input and the power cathode of gate circuit shaping circuit 4 and have electric capacity C1, resistance R5 and electric capacity C1 to form door circuit 3；Gate circuit shaping circuit 4 is sequentially connected in series by not gate U1 and not gate U2；The output of gate circuit shaping circuit 4 is as the input of NAND gate U3 of oscillating circuit 5, the input of the output series connection not gate U4 of NAND gate U3, resistance R3 is connected between output and another input of NAND gate U3 of NAND gate U3, this input of NAND gate U3 also and has been connected between the output of not gate U4 an electric capacity C2, forms oscillating circuit 5；The output of not gate U4, resistance R7, the base stage of NPN type triode Q3 are sequentially connected in series, the emitter stage of triode Q3, resistance R8, light emitting diode D2 are sequentially connected in series, the negative pole of light emitting diode D2 connects power cathode, triode Q3 emitter stage has been also connected with an alarm Speaker simultaneously and has connect power cathode, forms warning circuit 6；nullThe emitter stage of triode Q3、Resistance R9、The base stage of NPN type triode Q4 is sequentially connected in series，The emitter stage of triode Q4 connects power cathode，The colelctor electrode of triode Q4、The Sa end points of resistance R10 and electrical verification switch S2 is sequentially connected in series，The colelctor electrode of triode Q4 connects the base stage of NPN type triode Q1，The colelctor electrode of triode Q1 connects the Sa end points of electrical verification switch S2，The emitter stage of triode Q1、Resistance R2、Light emitting diode D3 is sequentially connected in series，The negative pole of light emitting diode D3 connects power cathode，Composition switch self-checking circuit 7，Signal picker Sig connects return circuit 2，Return circuit 2、Door circuit 3、Gate circuit shaping circuit 4、Oscillating circuit 5、Warning circuit 6、Switch self-checking circuit 7 is sequentially connected with，Switch self-checking circuit 7 is connected by electrical verification switch S2 and dc source，Composition electrical verification loop.
The utility model is additionally provided with voltage self-checking circuit 8, main circuit self-checking circuit 1 and self-test switch S1, and positive source, self-test switch S1, voltage detector VDET, inductance L1 are sequentially connected in series, and inductance L1 connects power cathode, forms voltage self-checking circuit 8；The Sm end points of self-test switch S1 connects the positive pole of diode D1, the positive pole of diode D1, normal open switch K1, resistance R1 are sequentially connected in series main circuit self-checking circuit 1, the colelctor electrode of negative pole and triode Q2 that the other end of resistance R1 connects signal picker Sig, diode D1 connects.Main circuit self-checking circuit 1, voltage self-checking circuit 8, self-test switch S1, signal picker Sig, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 and dc source, form main circuit self-inspection loop.
Above-described light emitting diode D3 is green LED, light emitting diode D2 is red light emitting diodes, and light emitting diode D3 and light emitting diode D2 can also is that and connected, by a red and green color light emitting diode common cathode, the function realizing sending ruddiness and green glow.
Being divided into two steps in use: step one, self-inspection, press self-test switch S1 and carry out electricity self-inspection, if electricity is not enough, green indicating lamp is bright, then change power supply, if electricity is sufficient, red led is bright, alarm equipment alarm；Step 2, electrical verification, press electrical verification switch S2, electric field signal around measuring targets is acquired and checks, if there being electric field around object under test, red led is bright, alarm equipment alarm, if without electric field around object under test, green indicating lamp is bright, is described in detail below in conjunction with circuit concrete in Fig. 2.
Step one: self-inspection, first presses self-test switch S1 and carries out electricity self-inspection, and voltage detector VDET starts and to detect electric quantity of power supply the most sufficient, is divided into two kinds of situations:
The first situation, electric quantity of power supply is sufficient, and voltage detector VDET detects that power supply has electricity, then carry out main circuit self-inspection, electromagnetic relay L1 starts and the contact of adhesive normal open switch K1, diode D1 conducting simultaneously, signal picker turns on, i.e. main circuit self-checking circuit 1 turns on, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are both turned on, namely the conducting of main circuit self-inspection loop, light emitting diode D2 red led is bright, and alarm Speaker reports to the police.
The second situation, electric quantity of power supply is not enough, voltage detector VDET detects that electric quantity of power supply deficiency output voltage is low level, electromagnetic relay cannot be started, normal open switch K1 does not closes, diode D1 is not turned on, signal picker is not turned on, i.e. main circuit self-checking circuit 1 is not turned on, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are all not turned on, namely main circuit self-inspection loop is not turned on, but switch self-checking circuit 7 turns on, and light emitting diode D3 green indicating lamp is bright.
If electric quantity of power supply is not enough, then change power supply, again press self-test switch S1 and carry out electricity self-inspection, until the red led of light emitting diode D2 is bright and alarm Speaker reports to the police；Examining the break-make situation of main circuit during electricity self-inspection, if main circuit fault, then red led does not works and alarm Speaker does not reports to the police the most simultaneously.
Step 2: electrical verification, the electric field signal pressed around electrical verification switch S2 measuring targets is acquired and checks, and is divided into two kinds of situations:
The first situation, electric field signal is had around object under test, press electrical verification button S2, this electroscope mobile is near object under test, and in electrical verification loop, signal picker Sig will collect voltage signal, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 turn on, light emitting diode D2 red led is bright, and alarm Speaker reports to the police, and switch self-checking circuit is not turned on.
The second situation, without electric field signal around object under test, press electrical verification button S2, this electroscope mobile is near object under test, in electrical verification loop, signal picker Sig will be unable to collect voltage signal, and return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are all not turned on, switch self-checking circuit 7 turns on, and light emitting diode D3 green indicating lamp is bright.
As shown in Figure 3, after being encapsulated as finished product, utilize the cooperation of electrical verification button 11 and self-inspection button 12 to carry out electrical verification detection, alarm 10 and indicator lamp 9 to indicate the state of electrical verification or self-inspection, herein, indicator lamp 9 be red and green color diode realize send two different colors of light, the present invention is simple to operate, individual light and handy, easy to carry.
To illustrate that, above-described embodiment is illustrative not limiting to technical solutions of the utility model, the equivalent of art those of ordinary skill or other amendment made according to prior art, as long as not beyond thinking and the scope of technical solutions of the utility model, within should be included in the interest field required by the utility model.
Claims (2)
1. an electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that, also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and dc source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit are sequentially connected with, switch self-checking circuit is connected by electrical verification switch and dc source, forms electrical verification loop.
Electrical verification type alarming in short range of electric power device the most according to claim 1, it is characterized in that, this alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects dc source by self-test switch, forms main circuit self-inspection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366121.2U CN205562663U (en) | 2016-04-27 | 2016-04-27 | Test nearly electric alarm of electric type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366121.2U CN205562663U (en) | 2016-04-27 | 2016-04-27 | Test nearly electric alarm of electric type |
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| Publication Number | Publication Date |
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| CN205562663U true CN205562663U (en) | 2016-09-07 |
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| CN201620366121.2U Active CN205562663U (en) | 2016-04-27 | 2016-04-27 | Test nearly electric alarm of electric type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738682A (en) * | 2016-04-27 | 2016-07-06 | 翟银华 | Electric checking type approach electric alarm |
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2016
- 2016-04-27 CN CN201620366121.2U patent/CN205562663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738682A (en) * | 2016-04-27 | 2016-07-06 | 翟银华 | Electric checking type approach electric alarm |
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