CN201638349U - Human body induction alarm device of high-voltage isolation area - Google Patents
Human body induction alarm device of high-voltage isolation area Download PDFInfo
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- CN201638349U CN201638349U CN2009202969495U CN200920296949U CN201638349U CN 201638349 U CN201638349 U CN 201638349U CN 2009202969495 U CN2009202969495 U CN 2009202969495U CN 200920296949 U CN200920296949 U CN 200920296949U CN 201638349 U CN201638349 U CN 201638349U
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Abstract
The utility model discloses a human body induction alarm device of a high-voltage isolation area, comprising an alarm circuit branch and a power supply circuit. The alarm circuit branch comprises a first human body induction sensor, a first amplifying circuit, a first comparison circuit and an alarm circuit, wherein the signal output end of the first human body induction sensor is connected with the input end of the first amplifying circuit, the output end of the first amplifying circuit is connected with the input end of the first comparison circuit, and the output end of the first comparison circuit is connected with the input end of the alarm circuit. The human body induction alarm device of the high-voltage isolation area can induce human body signals, when voltage also exists in the isolation area, if people enter the dangerous area, the device can give an alarm for prompting, and when people enter the area with the minimum safety factor, the device can cut off a power supply of a high-voltage test transformer to protect personal safety, thereby effectively preventing the occurrence of accidents.
Description
Technical field
The utility model relates to high voltage isolated area warning device, relates in particular to a kind of high voltage isolated area human body sensing warning device.
Background technology
At present, for switchgear assembly manufacturing enterprise, its switch cubicle all will carry out tests of simulating after assembling is finished, requirement has the professional and technical personnel just can carry out service test, particularly when doing dielectric test, under high-tension environment, test, this just needs a specific area of isolation, even if like this, high voltage region also not necessarily safety, when in isolated area, also voltage being arranged, if someone enters in the dangerous territory, will cause certain harm to the people, even have an accident, have a strong impact on operating personnel's personal safety.
The utility model content
The purpose of this utility model provides a kind of high voltage isolated area human body sensing warning device, can guarantee the personal safety of personnel in isolated area.
The utility model adopts following technical proposals: a kind of high voltage isolated area human body sensing warning device, comprise warning branch road and power circuit, comprise the first body induction sensor, first amplifying circuit, first comparator circuit and warning circuit in the warning branch road, the signal output part of the first body induction sensor is connected with the input end of first amplifying circuit, the output terminal of first amplifying circuit is connected with the input end of first comparator circuit, and the output terminal of first comparator circuit is connected with the input end of warning circuit.
The input end of described warning circuit is connected with first and prevents the false alarm circuit.
Also be provided with cutoff high electricity branch road in the described device, comprise second human body sensor, second amplifying circuit, second comparator circuit and power-down circuit in the cutoff high electricity branch road, the signal output part of second human body sensor is connected with the input end of second amplifying circuit, the output terminal of second amplifying circuit is connected with the input end of second comparator circuit, the output terminal of second comparator circuit is connected with the input end of power-down circuit, and the output terminal of power-down circuit is connected with the power input of HT testing transformer.
The input end of described power-down circuit is connected with second and prevents the false alarm circuit.
Described first prevents that the false alarm circuit from comprising first triode, first electric capacity, first resistance, second resistance and the 3rd resistance, the grounded emitter of first triode, and the base stage of first triode connects ground connection behind first resistance; Second resistance is connected in parallel on the two ends of first resistance, and the 3rd resistance one end connects second resistance, and the other end connects first electric capacity, one end, and the first electric capacity other end connects power supply, and the collector of first triode is connected with the input end of warning circuit.
Described second prevents that the false alarm circuit from comprising second triode, second electric capacity, the 4th resistance, the 5th resistance and the 6th resistance, the grounded emitter of second triode, and the base stage of second triode connects ground connection behind the 4th resistance; The 5th resistance is connected in parallel on the two ends of the 4th resistance, and the 6th resistance one end connects the 5th resistance, and the other end connects second electric capacity, one end, and the second electric capacity other end connects power supply, the collector of second triode and the input end of power-down circuit.
Described first amplifying circuit comprises first transistor amplifier and first operation amplifier circuit, and the output terminal of first transistor amplifier is connected with the input end of first operation amplifier circuit.
Described second amplifying circuit comprises second transistor amplifier and second operation amplifier circuit, and the output terminal of second transistor amplifier is connected with the input end of second operation amplifier circuit.
The utility model high voltage isolated area human body sensing warning device can be responded to human body signal, and when also voltage being arranged in isolated area when, if there is the people to enter in the dangerous territory, this device can alarm; Further, the protection personal safety of just cutting off the electricity supply in the time of in personnel enter the minimal security district; Also be provided with in this device circuit and prevent the false alarm circuit, can make that this device is correct reports to the police, the degree of accuracy height, thus effectively prevented the generation of accident.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises warning branch road, cutoff high electricity branch road and power circuit, comprise the first body induction sensor, first amplifying circuit, first comparator circuit and warning circuit in the warning branch road, the signal output part of the first body induction sensor is connected with the input end of first amplifying circuit, the output terminal of first amplifying circuit is connected with the input end of first comparator circuit, and the output terminal of first comparator circuit is connected with the input end of warning circuit.Comprise second human body sensor, second amplifying circuit, second comparator circuit and power-down circuit in the cutoff high electricity branch road, the signal output part of second human body sensor is connected with the input end of second amplifying circuit, the output terminal of second amplifying circuit is connected with the input end of second comparator circuit, the output terminal of second comparator circuit is connected with the input end of power-down circuit, and the output terminal of power-down circuit is connected with the power input of HT testing transformer.First amplifying circuit and second amplifying circuit include transistor amplifier and operation amplifier circuit, and the output terminal of transistor amplifier is connected with the input end of operation amplifier circuit.Power circuit provides power supply for each circuit.The first body induction sensor and second human body sensor all adopt people's body heat to release infrared sensor in the present embodiment.
As shown in Figure 2, the input end power supply of transformer T1 draws the output terminal from testing laboratory's power supply, and testing laboratory's power supply is simultaneously to HT testing transformer power supply, so just can offer the power supply of this warning device when doing high-potting and beginning.Rectification is a direct supply to the output terminal of transformer T1 through rectifier bridge D1, and wherein capacitor C Z1, capacitor C Z2, resistance R Z1, voltage stabilizing diode DZ form direct current regulation circuit, to offer the stable voltage of warning device.The output terminal of the first body induction sensor G1 is by the input end of capacitor C 2 connections first amplifying circuit in the warning branch road, and first amplifying circuit comprises triode Q1, and the base stage of triode Q1 i.e. the input end of first amplifying circuit, the grounded emitter of triode Q1; Also be connected with capacitor C in parallel 3 and resistance R 1 between the base stage of triode Q1 and the collector, the collector of triode Q1 is connected to power supply after also connecting resistance R 2, and the collector of triode Q1 also is connected with resistance R 4, the capacitor C 4 of series connection, the other end ground connection of capacitor C 4.The collector of triode Q1 is connected with the input end of operation amplifier circuit, operation amplifier circuit comprises operational amplifier IC2, the inverting input of operational amplifier IC2 is the input end of operation amplifier circuit, is connected with parallel resistor R5, capacitor C 6 between the in-phase input end of operational amplifier IC2 and the output terminal.The output terminal of operational amplifier IC2 is connected with the input end of comparator circuit, comparator circuit comprises voltage comparator ic 3, the inverting input of voltage comparator ic 3 is the input end of comparator circuit, the in-phase input end of voltage comparator ic 3 connects the contact of a potentiometer RP, the end of potentiometer RP connects power supply, other end ground connection; The output terminal of voltage comparator ic 3 is connected with the input end of warning circuit by resistance R 6.Warning circuit comprises triode Q2, diode D2, relay J 1, loudspeaker LS1, alarm lamp DS1, the base stage of triode Q2 is the input end of warning circuit, the grounded emitter of triode Q2, the collector of triode Q2 is connected with the positive pole of diode D2, the negative pole of diode D2 connects power supply, be connected in parallel on the two ends of diode D2 behind the coil of resistance R 7 connection relay J 1, wherein the coil of relay J 1 connects power supply.The normally opened contact of relay J 1 is connected with loudspeaker LS1 two ends, and alarm lamp DS1 is connected in parallel on the two ends of loudspeaker LS1.The base stage of triode Q2 also is connected with first and prevents the false alarm circuit in warning circuit, first prevents that the false alarm circuit from comprising triode Q3, capacitor C 7, resistance R 8, R9, R10, the grounded emitter of triode Q3, the base stage of triode Q3 connect resistance R 10 back ground connection; Resistance R 9 is connected in parallel on the two ends of resistance R 10, and resistance R 8 one ends connect resistance R 9, and the other end connects capacitor C 7 one ends, and capacitor C 7 other ends connect power supply.
As shown in Figure 2, the annexation of the first body induction sensor G1 in the second human body sensor G2 in the cutoff high electricity branch road, second amplifying circuit, second comparator circuit and the warning branch road, first amplifying circuit, first comparator circuit is identical, different is the normally closed contact of the relay J 2 in the power-down circuit and the power input of HT testing transformer, the i.e. power switch of HT testing transformer.Second prevents that the false alarm circuit from also preventing that with first the annexation in the false alarm circuit is identical, and different is second prevents that the collector of triode Q23 in the false alarm circuit is connected with the base stage of triode Q22 in the power-down circuit.
Principle of work of the present utility model: during use, the first body induction sensor and second human body sensor are installed in the position that is higher than switch cubicle, adjust the zone that the theta alignment people can enter, adjust the first body induction sensor and second human body sensor in different monitoring ranges.As shown in Figure 2, when the first body induction sensor G1 receives after heat that human body discharges releases infrared signal, becoming a frequency by sensor G1 internal conversion is the faint low frequency signal of 0.3-3HZ, this signal is input voltage comparer IC3 after triode Q1 amplifying circuit, operational amplifier IC2 circuit two-stage are amplified, wherein potentiometer RP is the reference voltage regulator potentiometer, be used for regulating circuit sensitivity, just investigative range.Reference voltage (IC3+input end) is higher than the voltage that is input to the inverting input of voltage comparator ic 3 by the input end of operational amplifier IC2, voltage comparator ic 3 output low levels at ordinary times.In the people enters investigative range, the first body induction sensor G1 output voltage, through the input end of triode Q1 amplifying circuit to operational amplifier IC2, after operational amplifier IC2 amplified, then the output voltage of operational amplifier IC2 was greater than reference voltage level, and this moment, the output terminal of voltage comparator ic 3 was exported high level, triode Q2 conducting, sound light alarming circuit is connected in then relay J 1 action, and loudspeaker LS1 sounding, alarm lamp DS1 is shinny is reminded to operating personnel.
As shown in Figure 2, moment in start makes triode Q3 conducting by the charging effect of capacitor C 7, make the output high level of first voltage comparator ic 3 be switched to ground like this through triode Q3, triode Q2 remain off state in the warning circuit, people's induction can make first voltage comparator ic, 3 output high level and cause the false triggering situation when effectively preventing to start shooting.
As shown in Figure 2; in human body enters the scope of second human body sensor G2 monitoring; principle of work is same as above; different is; relay J 2 action, normally closed contact disconnects the power supply of cutoff high testing transformer, so just can prevent when the appearance accident output HIGH voltage again; thereby just cut off the electricity supply the protection personal safety when realizing in entering the minimal security district, generation that can the minimizing accident.
Claims (8)
1. high voltage isolated area human body sensing warning device, it is characterized in that: comprise warning branch road and power circuit, comprise the first body induction sensor, first amplifying circuit, first comparator circuit and warning circuit in the warning branch road, the signal output part of the first body induction sensor is connected with the input end of first amplifying circuit, the output terminal of first amplifying circuit is connected with the input end of first comparator circuit, and the output terminal of first comparator circuit is connected with the input end of warning circuit.
2. high voltage isolated area human body sensing warning device according to claim 1, it is characterized in that: the input end of described warning circuit is connected with first and prevents the false alarm circuit.
3. high voltage isolated area human body sensing warning device according to claim 1 and 2, it is characterized in that: also be provided with cutoff high electricity branch road in the described device, comprise second human body sensor in the cutoff high electricity branch road, second amplifying circuit, second comparator circuit and power-down circuit, the signal output part of second human body sensor is connected with the input end of second amplifying circuit, the output terminal of second amplifying circuit is connected with the input end of second comparator circuit, the output terminal of second comparator circuit is connected with the input end of power-down circuit, the output terminal of power-down circuit and the power input of HT testing transformer.
4. high voltage isolated area human body sensing warning device according to claim 3, it is characterized in that: the input end of described power-down circuit is connected with second and prevents the false alarm circuit.
5. high voltage isolated area human body sensing warning device according to claim 2, it is characterized in that: described first prevents that the false alarm circuit from comprising first triode, first electric capacity, first resistance, second resistance and the 3rd resistance, the grounded emitter of first triode, the base stage of first triode connect ground connection behind first resistance; Second resistance is connected in parallel on the two ends of first resistance, and the 3rd resistance one end connects second resistance, and the other end connects first electric capacity, one end, and the first electric capacity other end connects power supply, and the collector of first triode is connected with the input end of warning circuit.
6. high voltage isolated area human body sensing warning device according to claim 4, it is characterized in that: described second prevents that the false alarm circuit from comprising second triode, second electric capacity, the 4th resistance, the 5th resistance and the 6th resistance, the grounded emitter of second triode, the base stage of second triode connect ground connection behind the 4th resistance; The 5th resistance is connected in parallel on the two ends of the 4th resistance, and the 6th resistance one end connects the 5th resistance, and the other end connects second electric capacity, one end, and the second electric capacity other end connects power supply, and the collector of second triode is connected with the input end of power-down circuit.
7. high voltage isolated area human body sensing warning device according to claim 5, it is characterized in that: described first amplifying circuit comprises first transistor amplifier and first operation amplifier circuit, and the output terminal of first transistor amplifier is connected with the input end of first operation amplifier circuit.
8. high voltage isolated area human body sensing warning device according to claim 6, it is characterized in that: described second amplifying circuit comprises second transistor amplifier and second operation amplifier circuit, and the output terminal of second transistor amplifier is connected with the input end of second operation amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202969495U CN201638349U (en) | 2009-12-14 | 2009-12-14 | Human body induction alarm device of high-voltage isolation area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202969495U CN201638349U (en) | 2009-12-14 | 2009-12-14 | Human body induction alarm device of high-voltage isolation area |
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| Publication Number | Publication Date |
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| CN201638349U true CN201638349U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202969495U Expired - Fee Related CN201638349U (en) | 2009-12-14 | 2009-12-14 | Human body induction alarm device of high-voltage isolation area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661081A (en) * | 2012-05-23 | 2012-09-12 | 四川省电力公司泸州电业局 | Safety fence for power maintenance site |
| CN104808555A (en) * | 2015-04-22 | 2015-07-29 | 申鸣 | Power supply control system, method and device, and plant cultivating device |
| CN105551185A (en) * | 2015-12-24 | 2016-05-04 | 国网山东省电力公司青岛供电公司 | State prompt apparatus, equipment and method |
| CN111257602A (en) * | 2020-03-23 | 2020-06-09 | 朔黄铁路发展有限责任公司 | Lightning arrester testing device and lightning arrester testing system |
-
2009
- 2009-12-14 CN CN2009202969495U patent/CN201638349U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661081A (en) * | 2012-05-23 | 2012-09-12 | 四川省电力公司泸州电业局 | Safety fence for power maintenance site |
| CN102661081B (en) * | 2012-05-23 | 2016-02-10 | 四川省电力公司泸州电业局 | Safety fence for power maintenance site |
| CN104808555A (en) * | 2015-04-22 | 2015-07-29 | 申鸣 | Power supply control system, method and device, and plant cultivating device |
| CN105551185A (en) * | 2015-12-24 | 2016-05-04 | 国网山东省电力公司青岛供电公司 | State prompt apparatus, equipment and method |
| CN111257602A (en) * | 2020-03-23 | 2020-06-09 | 朔黄铁路发展有限责任公司 | Lightning arrester testing device and lightning arrester testing system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20141214 |
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| EXPY | Termination of patent right or utility model |