CN104199018A - Safety alarm for electrified parts of substation - Google Patents
Safety alarm for electrified parts of substation Download PDFInfo
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- CN104199018A CN104199018A CN201410469957.0A CN201410469957A CN104199018A CN 104199018 A CN104199018 A CN 104199018A CN 201410469957 A CN201410469957 A CN 201410469957A CN 104199018 A CN104199018 A CN 104199018A
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- 239000003990 capacitor Substances 0.000 claims description 119
- 230000000087 stabilizing effect Effects 0.000 claims description 47
- 230000003321 amplification Effects 0.000 claims description 16
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 16
- 241000272470 Circus Species 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 6
- 238000009527 percussion Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 241000282326 Felis catus Species 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Amplifiers (AREA)
Abstract
The invention relates to a safety alarm for electrified parts of a substation, belongs to the technical field of warning for electrified devices of substations and aims to solve the problem that safety accidents easily occur since substation monitoring staff or constructors cannot see a safety distance from an electrified device. An infrared sensor IC1 is used for acquiring a human body infrared signal within a preset safety threshold. The electrical signal output end of the infrared sensor IC1 is connected with the electrical signal input end of a signal amplifier circuit; an amplified signal output end of the signal amplifier circuit is connected with the voltage comparison signal input end of a voltage comparator; the voltage comparison signal output end of the voltage comparator is connected with the delay signal input end of an alarm delay circuit; the delay signal output end of the alarm delay circuit is connected with the alarm signal input end of an acoustic alarm circuit; the acoustic alarm circuit gives out a warning through an acoustical signal. The safety alarm is used for acoustic alarming for the electrified parts.
Description
Technical field
The present invention relates to charged position security warning alarm for transformer station, belong to substation live-line equipment warning technical field.
Background technology
On the switch and switch operation handle of substation live-line equipment, on the cat ladder of charging equipment, on charging equipment fence, the High Voltage Switchgear net door place at charged interval, because monitoring personnel or workmen can not obtain and the safe distance of charging equipment intuitively, the very easily Security alert district of mistakenly entering into charged equipment, so that there is accident of human electric shock, cause security incident.
Summary of the invention
The present invention seeks to, in order to solve transformer station monitoring personnel or workmen owing to can not obtaining intuitively and the safe distance of charging equipment, easily to cause the problem of security incident, charged position security warning alarm for a kind of transformer station is provided.
Charged position security warning alarm for transformer station of the present invention, described alarm is arranged on charging equipment, and it comprises infrared sensor IC1, and it also comprises signal amplification circuit, voltage comparator, warning and delaying circuit and audio alarm circuit,
Infrared sensor IC1 pre-sets secure threshold with interior human infrared signal for gathering to enter, the electrical signal of infrared sensor IC1 connects the electric signal input end of signal amplification circuit, the amplifying signal output terminal of signal amplification circuit connects the voltage comparison signal input end of voltage comparator, the voltage comparison signal output terminal of voltage comparator connects the time delayed signal input end of warning and delaying circuit, the time delayed signal output terminal of warning and delaying circuit connects the alerting signal input end of audio alarm circuit, and audio alarm circuit is reported to the police by voice signal.
It also comprises voltage conversion circuit and power circuit,
Power circuit is for being converted to direct current 12V Voltage-output by power frequency 220V power supply, this direct current 12V voltage is after voltage conversion circuit is converted to direct current 6V voltage, for infrared sensor IC1, signal amplification circuit, voltage comparator, warning and delaying circuit and audio alarm circuit provide working power.
Signal amplification circuit is made up of electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, capacitor C 4, electrochemical capacitor C5, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, NPN type triode VT1 and operational amplifier IC2; Voltage comparator is made up of resistance R 9, resistance R 10, resistance R 11, variable resistor R12, diode VD1 and operational amplifier IC3; Warning and delaying circuit is made up of resistance R 13, resistance R 14, resistance R 15, resistance R 16, diode VD2, electrochemical capacitor C6 and operational amplifier IC4; Audio alarm circuit is made up of resistance R 17, resistance R 18, resistance R 19, resistance R 20, diode VD3, diode VD4, NPN type triode VT2, NPN type triode VT3, electrochemical capacitor C8 Homeway.com Chinese percussion instrument BL; Voltage conversion circuit is made up of electrochemical capacitor C7 and voltage stabilizing chip IC 5; Power circuit is made up of transformer T, single phase bridge type rectifier circu U, electrochemical capacitor C9, electrochemical capacitor C10, capacitor C 11, direct current 12V power supply E, diode VD5 and switch S;
The positive source of infrared sensor IC1 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of infrared sensor IC1 connects power supply ground, contact resistance R1 between the electrical signal of infrared sensor IC1 and power cathode, the electrical signal of infrared sensor IC1 connects the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 connects the base stage of NPN type triode VT1, contact resistance R2 between the base stage of NPN type triode VT1 and collector, contact resistance R3 between the collector of NPN type triode VT1 and the direct current 6V voltage output end of voltage stabilizing chip IC 5, the emitter of NPN type triode VT1 connects power supply ground, the collector of NPN type triode VT1 connects the positive pole of electrochemical capacitor C2, contact resistance R4 between the in-phase input end of the negative pole of electrochemical capacitor C2 and operational amplifier IC2, contact resistance R7 between the positive pole of the inverting input of operational amplifier IC2 and electrochemical capacitor C3, the negative pole of electrochemical capacitor C3 connects power supply ground, contact resistance R8 between the inverting input of operational amplifier IC2 and output terminal, resistance R 8 is in parallel with capacitor C 4, the positive source of operational amplifier IC2 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC2 connects power supply ground, one end of resistance R 5 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, one end of the other end contact resistance R6 of resistance R 5, and the other end of resistance R 6 connects power supply ground,
The output terminal of operational amplifier IC2 connects the positive pole of electrochemical capacitor C5, the inverting input of the negative pole concatenation operation amplifier IC3 of electrochemical capacitor C5, contact resistance R9 between the negative pole of electrochemical capacitor C5 and power supply ground, contact resistance R11 between the anode of the in-phase input end of operational amplifier IC3 and diode VD1, contact resistance R10 between the direct current 6V voltage output end of the anode of diode VD1 and voltage stabilizing chip IC 5, the negative electrode of diode VD1 connects power supply ground, between the in-phase input end of operational amplifier IC3 and power supply ground, be connected variable resistor R12, the positive source of operational amplifier IC3 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC3 connects power supply ground, contact resistance R13 between the direct current 6V voltage output end of the output terminal of operational amplifier IC3 and voltage stabilizing chip IC 5, the output terminal of operational amplifier IC3 connects the negative electrode of diode VD2, the positive pole of the anodic bonding electrochemical capacitor C6 of diode VD2, the negative pole of electrochemical capacitor C6 connects power supply ground, contact resistance R14 between the direct current 6V voltage output end of the anode of diode VD2 and voltage stabilizing chip IC 5, the inverting input of the anodic bonding operational amplifier IC4 of diode VD2, contact resistance R15 between the direct current 6V voltage output end of the in-phase input end of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R16 between the in-phase input end of operational amplifier IC4 and power supply ground, the positive source of operational amplifier IC4 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC4 connects power supply ground,
Contact resistance R17 between the direct current 6V voltage output end of the output terminal of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R18 between the base stage of the output terminal of operational amplifier IC4 and NPN type triode VT2, the emitter of NPN type triode VT2 connects power supply ground, the collector of NPN type triode VT2 connects the power cathode input end of information ring device BL, contact resistance R19 between the anode of the output terminal of operational amplifier IC4 and diode VD3, the negative electrode of diode VD3 connects the collector of NPN type triode VT3, the emitter of NPN type triode VT3 connects power supply ground, contact resistance R20 between the base stage of NPN type triode VT3 and the negative electrode of diode VD4, the anodic bonding power supply ground of diode VD4, the negative electrode of diode VD4 connects the negative pole of electrochemical capacitor C8, the positive pole of electrochemical capacitor C8 connects the positive source input end of information ring device BL, the positive pole of electrochemical capacitor C8 connects the direct current 12V voltage input end of voltage stabilizing chip IC 5, the direct current 6V voltage output end of voltage stabilizing chip IC 5 connects the positive pole of electrochemical capacitor C7, electrochemical capacitor C7 negative pole connects power supply ground,
One end of the direct current 12V voltage input end connecting valve S of voltage stabilizing chip IC 5, the other end of switch S connects the positive pole of electrochemical capacitor C9, the negative pole of electrochemical capacitor C9 connects power supply ground, the negative electrode of the cathode connecting diode VD5 of electrochemical capacitor C9, the positive pole of the anodic bonding direct current 12V power supply E of diode VD5, the negative pole of direct current 12V power supply E connects power supply ground, the positive pole of electrochemical capacitor C9 connects one end of capacitor C 11, the other end of capacitor C 11 connects power supply ground, the positive pole of electrochemical capacitor C9 connects the positive pole of electrochemical capacitor C10, electrochemical capacitor C10 negative pole connects power supply ground, the positive pole of electrochemical capacitor C10 connects the positive source output terminal of single phase bridge type rectifier circu U, the negative pole of electrochemical capacitor C10 connects the power cathode output terminal of single phase bridge type rectifier circu U, two ac input ends of single phase bridge type rectifier circu U are connected with the secondary of transformer T, the former limit of transformer T connects power frequency 220V power supply.
Advantage of the present invention: the present invention can be as required to setting between the zone of alarm of infrared sensor, in the time that staff enters charged zone of protection, implement to report to the police by audio alarm circuit, effectively ensured thus the safety of staff's construction, avoid the generation of electric shock accidents.
Volume of the present invention is little, easy to carry, lightweight, does not need wiring between each assembly, and wireless connections are hung convenient; Easy to operate, remote keying can be set and realize corresponding function; Function is complete, supporting reasonable, cheap.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of transformer station's charged position security warning alarm described in embodiment one;
Fig. 2 is the circuit theory diagrams of power circuit.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, charged position security warning alarm for transformer station described in present embodiment, described alarm is arranged on charging equipment, it comprises infrared sensor IC1, it also comprises signal amplification circuit 1, voltage comparator 2, warning and delaying circuit 3 and audio alarm circuit 4
Infrared sensor IC1 pre-sets secure threshold with interior human infrared signal for gathering to enter, the electrical signal of infrared sensor IC1 connects the electric signal input end of signal amplification circuit 1, the amplifying signal output terminal of signal amplification circuit 1 connects the voltage comparison signal input end of voltage comparator 2, the voltage comparison signal output terminal of voltage comparator 2 connects the time delayed signal input end of warning and delaying circuit 3, the time delayed signal output terminal of warning and delaying circuit 3 connects the alerting signal input end of audio alarm circuit 4, and audio alarm circuit 4 is reported to the police by voice signal.
Embodiment two: below in conjunction with Fig. 1 and Fig. 2, present embodiment is described, present embodiment is described further embodiment one, present embodiment also comprises voltage conversion circuit 5 and power circuit 6,
Power circuit 6 is for being converted to direct current 12V Voltage-output by power frequency 220V power supply, this direct current 12V voltage is after voltage conversion circuit 5 is converted to direct current 6V voltage, for infrared sensor IC1, signal amplification circuit 1, voltage comparator 2, warning and delaying circuit 3 and audio alarm circuit 4 provide working power.
Embodiment three: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, present embodiment is described further embodiment two, and the signal amplification circuit 1 of present embodiment is made up of electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, capacitor C 4, electrochemical capacitor C5, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, NPN type triode VT1 and operational amplifier IC2; Voltage comparator 2 is made up of resistance R 9, resistance R 10, resistance R 11, variable resistor R12, diode VD1 and operational amplifier IC3; Warning and delaying circuit 3 is made up of resistance R 13, resistance R 14, resistance R 15, resistance R 16, diode VD2, electrochemical capacitor C6 and operational amplifier IC4; Audio alarm circuit 4 is made up of resistance R 17, resistance R 18, resistance R 19, resistance R 20, diode VD3, diode VD4, NPN type triode VT2, NPN type triode VT3, electrochemical capacitor C8 Homeway.com Chinese percussion instrument BL; Voltage conversion circuit 5 is made up of electrochemical capacitor C7 and voltage stabilizing chip IC 5; Power circuit 6 is made up of transformer T, single phase bridge type rectifier circu U, electrochemical capacitor C9, electrochemical capacitor C10, capacitor C 11, direct current 12V power supply E, diode VD5 and switch S;
The positive source of infrared sensor IC1 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of infrared sensor IC1 connects power supply ground, contact resistance R1 between the electrical signal of infrared sensor IC1 and power cathode, the electrical signal of infrared sensor IC1 connects the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 connects the base stage of NPN type triode VT1, contact resistance R2 between the base stage of NPN type triode VT1 and collector, contact resistance R3 between the collector of NPN type triode VT1 and the direct current 6V voltage output end of voltage stabilizing chip IC 5, the emitter of NPN type triode VT1 connects power supply ground, the collector of NPN type triode VT1 connects the positive pole of electrochemical capacitor C2, contact resistance R4 between the in-phase input end of the negative pole of electrochemical capacitor C2 and operational amplifier IC2, contact resistance R7 between the positive pole of the inverting input of operational amplifier IC2 and electrochemical capacitor C3, the negative pole of electrochemical capacitor C3 connects power supply ground, contact resistance R8 between the inverting input of operational amplifier IC2 and output terminal, resistance R 8 is in parallel with capacitor C 4, the positive source of operational amplifier IC2 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC2 connects power supply ground, one end of resistance R 5 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, one end of the other end contact resistance R6 of resistance R 5, and the other end of resistance R 6 connects power supply ground,
The output terminal of operational amplifier IC2 connects the positive pole of electrochemical capacitor C5, the inverting input of the negative pole concatenation operation amplifier IC3 of electrochemical capacitor C5, contact resistance R9 between the negative pole of electrochemical capacitor C5 and power supply ground, contact resistance R11 between the anode of the in-phase input end of operational amplifier IC3 and diode VD1, contact resistance R10 between the direct current 6V voltage output end of the anode of diode VD1 and voltage stabilizing chip IC 5, the negative electrode of diode VD1 connects power supply ground, between the in-phase input end of operational amplifier IC3 and power supply ground, be connected variable resistor R12, the positive source of operational amplifier IC3 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC3 connects power supply ground, contact resistance R13 between the direct current 6V voltage output end of the output terminal of operational amplifier IC3 and voltage stabilizing chip IC 5, the output terminal of operational amplifier IC3 connects the negative electrode of diode VD2, the positive pole of the anodic bonding electrochemical capacitor C6 of diode VD2, the negative pole of electrochemical capacitor C6 connects power supply ground, contact resistance R14 between the direct current 6V voltage output end of the anode of diode VD2 and voltage stabilizing chip IC 5, the inverting input of the anodic bonding operational amplifier IC4 of diode VD2, contact resistance R15 between the direct current 6V voltage output end of the in-phase input end of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R16 between the in-phase input end of operational amplifier IC4 and power supply ground, the positive source of operational amplifier IC4 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC4 connects power supply ground,
Contact resistance R17 between the direct current 6V voltage output end of the output terminal of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R18 between the base stage of the output terminal of operational amplifier IC4 and NPN type triode VT2, the emitter of NPN type triode VT2 connects power supply ground, the collector of NPN type triode VT2 connects the power cathode input end of information ring device BL, contact resistance R19 between the anode of the output terminal of operational amplifier IC4 and diode VD3, the negative electrode of diode VD3 connects the collector of NPN type triode VT3, the emitter of NPN type triode VT3 connects power supply ground, contact resistance R20 between the base stage of NPN type triode VT3 and the negative electrode of diode VD4, the anodic bonding power supply ground of diode VD4, the negative electrode of diode VD4 connects the negative pole of electrochemical capacitor C8, the positive pole of electrochemical capacitor C8 connects the positive source input end of information ring device BL, the positive pole of electrochemical capacitor C8 connects the direct current 12V voltage input end of voltage stabilizing chip IC 5, the direct current 6V voltage output end of voltage stabilizing chip IC 5 connects the positive pole of electrochemical capacitor C7, electrochemical capacitor C7 negative pole connects power supply ground,
One end of the direct current 12V voltage input end connecting valve S of voltage stabilizing chip IC 5, the other end of switch S connects the positive pole of electrochemical capacitor C9, the negative pole of electrochemical capacitor C9 connects power supply ground, the negative electrode of the cathode connecting diode VD5 of electrochemical capacitor C9, the positive pole of the anodic bonding direct current 12V power supply E of diode VD5, the negative pole of direct current 12V power supply E connects power supply ground, the positive pole of electrochemical capacitor C9 connects one end of capacitor C 11, the other end of capacitor C 11 connects power supply ground, the positive pole of electrochemical capacitor C9 connects the positive pole of electrochemical capacitor C10, electrochemical capacitor C10 negative pole connects power supply ground, the positive pole of electrochemical capacitor C10 connects the positive source output terminal of single phase bridge type rectifier circu U, the negative pole of electrochemical capacitor C10 connects the power cathode output terminal of single phase bridge type rectifier circu U, two ac input ends of single phase bridge type rectifier circu U are connected with the secondary of transformer T, the former limit of transformer T connects power frequency 220V power supply.
The present invention realizes warning by infra-red detection, the safe distance of infrared sensor IC1 is set to be greater than 1 meter or be greater than 4 meters, this safe distance can be set according to actual requirement, when staff is less than 1 meter or while being less than 4 meters near the distance of infrared sensor IC1, information ring device BL sounds the alarm, LED lamp flicker can be set simultaneously, and with voice message, the prompting such as for example have electricity or Keep Clear-High Voltage.This alarm is applicable on the switch and switch operation handle at charged position, and on the cat ladder of charging equipment, on charging equipment fence, the forward and backward net door of the high-tension switch cabinet at charged interval place, for preventing staff's mistakenly entering into charged district.In the time that needs are removed warning, can remove by the respective keys of the telepilot of supporting setting.
The about 10mA of this alarm static working current, enters stand-by state after switching on power approximately 2 minutes, as long as monitor that district can report to the police just there is people to enter.
Principle of work: when infrared sensor IC1 detects the infrared signal that front human body radiation goes out, the electrical signal of operational amplifier IC2 is exported faint electric signal, amplify through composition first order amplifying circuits such as triode VT1, be input in operational amplifier IC2 and carried out high-gain, low noise amplification by electrochemical capacitor C2 again, now the signal of operational amplifier IC2 output terminal is enough strong.Operational amplifier IC3 makes voltage comparator, its in-phase input end provides reference voltage by resistance R 10 and diode VD1, in the time that the signal voltage of the output terminal output of operational amplifier IC2 arrives the inverting input of operational amplifier IC3, the in-phase input end of operational amplifier IC3 and the voltage of inverting input compare, and now the output terminal of operational amplifier IC3 becomes low level from original high level.Resistance R 14 and electrochemical capacitor C6 composition delay circuit, its time is about 1 minute.In the time that the output terminal of operational amplifier IC3 becomes low level, C6 discharges by VD2, now the inverting input of IC4 becomes low level, the reference voltage of inverting input and in-phase input end compares, when the voltage of inverting input is during lower than reference voltage, the output terminal of IC4 becomes high level, VT2 conducting, and chimes of doom is sent in information ring device BL energising.After the infrared signal of human body disappears, the output terminal of IC3 recovers again high level output, now VD2 cut-off.Because the voltage at C6 two ends can not suddenly change, therefore slowly charge to C6 by R14, when the voltage at C6 two ends is during higher than its reference voltage, the output terminal of IC4 just becomes low level, and the time is about 1 minute, continues to report to the police for 1 minute.
In use, can be using alarm as main frame, supporting telepilot is set, by the button main control system on telepilot.Telepilot is loaded onto after battery, must press button on telepilot once.After host power supply is connected, press power switch, main frame sends 1 sound serge sound, and LED continues flicker, enters and learns code state, now exceedes more than 3 seconds by the button on telepilot, if main frame is learned code success, sends 4 sound serge sound.
PIR heat engine: enter immediately PIR heat engine state after learning code success, now LED lights to indicate heat engine process underway, and after approximately 30 seconds, heat engine is complete, and LED extinguishes.
Antitheft setting: press the button on telepilot under alarm release state, main frame sends serge, and LED dodges, enter the state of alert, LED glimmers once for every three seconds, if now there is human or animal to approach approximately 5 meters, main frame, left and right 120 degree, upper and lower 60 degree, alarm immediately approximately 20 seconds, 0LED synchronous flashing, report to the police and continue after 3 seconds, detect infrared signal if still have, report to the police again approximately 20 seconds, so circulation; Get back to the state of alert if do not detect signal after approximately 20 seconds.Wish is removed antitheft setting and is pressed this key again, and main frame sends serge sound two sound, and LED dodges two times.
Sound all clear: if will sound all clear by the button on telepilot.
Light current state: main frame this have light current to remind in the non-state of alert, and in the time that battery electric quantity is not enough, LED can dodge in approximately every 20 seconds, main frame also can send serge sound, prompting changing battery.
Embodiment four: present embodiment is described further embodiment three, the model of infrared sensor IC1 is Q74.
Embodiment five: present embodiment is described further embodiment three or four, the model of NPN type triode VT1 is 9014.
Embodiment six: present embodiment is described further embodiment three, four or five, the model of operational amplifier IC2 and operational amplifier IC3 is LM358.
Embodiment seven: present embodiment is described further embodiment three, four, five or six, the model of operational amplifier IC4 is LM393.
Embodiment eight: present embodiment is described further embodiment three, four, five, six or seven, the model of NPN type triode VT2 is MPSA13.
Embodiment nine: present embodiment is described further embodiment three, four, five, six, seven or eight, the model of NPN type triode VT3 is 8050.
Embodiment ten: present embodiment is described further embodiment three, four, five, six, seven, eight or nine, the model of voltage stabilizing chip IC 5 is 78L06.
Claims (10)
1. a charged position security warning alarm for transformer station, described alarm is arranged on charging equipment, it comprises infrared sensor IC1, it is characterized in that, it also comprises signal amplification circuit (1), voltage comparator (2), warning and delaying circuit (3) and audio alarm circuit (4)
Infrared sensor IC1 pre-sets secure threshold with interior human infrared signal for gathering to enter, the electrical signal of infrared sensor IC1 connects the electric signal input end of signal amplification circuit (1), the amplifying signal output terminal of signal amplification circuit (1) connects the voltage comparison signal input end of voltage comparator (2), the voltage comparison signal output terminal of voltage comparator (2) connects the time delayed signal input end of warning and delaying circuit (3), the time delayed signal output terminal of warning and delaying circuit (3) connects the alerting signal input end of audio alarm circuit (4), audio alarm circuit (4) is reported to the police by voice signal.
2. charged position security warning alarm for transformer station according to claim 1, is characterized in that, it also comprises voltage conversion circuit (5) and power circuit (6),
Power circuit (6) is for being converted to direct current 12V Voltage-output by power frequency 220V power supply, this direct current 12V voltage is after voltage conversion circuit (5) is converted to direct current 6V voltage, for infrared sensor IC1, signal amplification circuit (1), voltage comparator (2), warning and delaying circuit (3) and audio alarm circuit (4) provide working power.
3. charged position security warning alarm for transformer station according to claim 2, it is characterized in that, signal amplification circuit (1) is made up of electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, capacitor C 4, electrochemical capacitor C5, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, NPN type triode VT1 and operational amplifier IC2; Voltage comparator (2) is made up of resistance R 9, resistance R 10, resistance R 11, variable resistor R12, diode VD1 and operational amplifier IC3; Warning and delaying circuit (3) is made up of resistance R 13, resistance R 14, resistance R 15, resistance R 16, diode VD2, electrochemical capacitor C6 and operational amplifier IC4; Audio alarm circuit (4) is made up of resistance R 17, resistance R 18, resistance R 19, resistance R 20, diode VD3, diode VD4, NPN type triode VT2, NPN type triode VT3, electrochemical capacitor C8 Homeway.com Chinese percussion instrument BL; Voltage conversion circuit (5) is made up of electrochemical capacitor C7 and voltage stabilizing chip IC 5; Power circuit (6) is made up of transformer T, single phase bridge type rectifier circu U, electrochemical capacitor C9, electrochemical capacitor C10, capacitor C 11, direct current 12V power supply E, diode VD5 and switch S;
The positive source of infrared sensor IC1 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of infrared sensor IC1 connects power supply ground, contact resistance R1 between the electrical signal of infrared sensor IC1 and power cathode, the electrical signal of infrared sensor IC1 connects the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 connects the base stage of NPN type triode VT1, contact resistance R2 between the base stage of NPN type triode VT1 and collector, contact resistance R3 between the collector of NPN type triode VT1 and the direct current 6V voltage output end of voltage stabilizing chip IC 5, the emitter of NPN type triode VT1 connects power supply ground, the collector of NPN type triode VT1 connects the positive pole of electrochemical capacitor C2, contact resistance R4 between the in-phase input end of the negative pole of electrochemical capacitor C2 and operational amplifier IC2, contact resistance R7 between the positive pole of the inverting input of operational amplifier IC2 and electrochemical capacitor C3, the negative pole of electrochemical capacitor C3 connects power supply ground, contact resistance R8 between the inverting input of operational amplifier IC2 and output terminal, resistance R 8 is in parallel with capacitor C 4, the positive source of operational amplifier IC2 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC2 connects power supply ground, one end of resistance R 5 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, one end of the other end contact resistance R6 of resistance R 5, and the other end of resistance R 6 connects power supply ground,
The output terminal of operational amplifier IC2 connects the positive pole of electrochemical capacitor C5, the inverting input of the negative pole concatenation operation amplifier IC3 of electrochemical capacitor C5, contact resistance R9 between the negative pole of electrochemical capacitor C5 and power supply ground, contact resistance R11 between the anode of the in-phase input end of operational amplifier IC3 and diode VD1, contact resistance R10 between the direct current 6V voltage output end of the anode of diode VD1 and voltage stabilizing chip IC 5, the negative electrode of diode VD1 connects power supply ground, between the in-phase input end of operational amplifier IC3 and power supply ground, be connected variable resistor R12, the positive source of operational amplifier IC3 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC3 connects power supply ground, contact resistance R13 between the direct current 6V voltage output end of the output terminal of operational amplifier IC3 and voltage stabilizing chip IC 5, the output terminal of operational amplifier IC3 connects the negative electrode of diode VD2, the positive pole of the anodic bonding electrochemical capacitor C6 of diode VD2, the negative pole of electrochemical capacitor C6 connects power supply ground, contact resistance R14 between the direct current 6V voltage output end of the anode of diode VD2 and voltage stabilizing chip IC 5, the inverting input of the anodic bonding operational amplifier IC4 of diode VD2, contact resistance R15 between the direct current 6V voltage output end of the in-phase input end of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R16 between the in-phase input end of operational amplifier IC4 and power supply ground, the positive source of operational amplifier IC4 connects the direct current 6V voltage output end of voltage stabilizing chip IC 5, the power cathode of operational amplifier IC4 connects power supply ground,
Contact resistance R17 between the direct current 6V voltage output end of the output terminal of operational amplifier IC4 and voltage stabilizing chip IC 5, contact resistance R18 between the base stage of the output terminal of operational amplifier IC4 and NPN type triode VT2, the emitter of NPN type triode VT2 connects power supply ground, the collector of NPN type triode VT2 connects the power cathode input end of information ring device BL, contact resistance R19 between the anode of the output terminal of operational amplifier IC4 and diode VD3, the negative electrode of diode VD3 connects the collector of NPN type triode VT3, the emitter of NPN type triode VT3 connects power supply ground, contact resistance R20 between the base stage of NPN type triode VT3 and the negative electrode of diode VD4, the anodic bonding power supply ground of diode VD4, the negative electrode of diode VD4 connects the negative pole of electrochemical capacitor C8, the positive pole of electrochemical capacitor C8 connects the positive source input end of information ring device BL, the positive pole of electrochemical capacitor C8 connects the direct current 12V voltage input end of voltage stabilizing chip IC 5, the direct current 6V voltage output end of voltage stabilizing chip IC 5 connects the positive pole of electrochemical capacitor C7, electrochemical capacitor C7 negative pole connects power supply ground,
One end of the direct current 12V voltage input end connecting valve S of voltage stabilizing chip IC 5, the other end of switch S connects the positive pole of electrochemical capacitor C9, the negative pole of electrochemical capacitor C9 connects power supply ground, the negative electrode of the cathode connecting diode VD5 of electrochemical capacitor C9, the positive pole of the anodic bonding direct current 12V power supply E of diode VD5, the negative pole of direct current 12V power supply E connects power supply ground, the positive pole of electrochemical capacitor C9 connects one end of capacitor C 11, the other end of capacitor C 11 connects power supply ground, the positive pole of electrochemical capacitor C9 connects the positive pole of electrochemical capacitor C10, electrochemical capacitor C10 negative pole connects power supply ground, the positive pole of electrochemical capacitor C10 connects the positive source output terminal of single phase bridge type rectifier circu U, the negative pole of electrochemical capacitor C10 connects the power cathode output terminal of single phase bridge type rectifier circu U, two ac input ends of single phase bridge type rectifier circu U are connected with the secondary of transformer T, the former limit of transformer T connects power frequency 220V power supply.
4. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of infrared sensor IC1 is Q74.
5. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of NPN type triode VT1 is 9014.
6. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of operational amplifier IC2 and operational amplifier IC3 is LM358.
7. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of operational amplifier IC4 is LM393.
8. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of NPN type triode VT2 is MPSA13.
9. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of NPN type triode VT3 is 8050.
10. charged position security warning alarm for transformer station according to claim 3, is characterized in that, the model of voltage stabilizing chip IC 5 is 78L06.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410469957.0A CN104199018A (en) | 2014-09-15 | 2014-09-15 | Safety alarm for electrified parts of substation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410469957.0A CN104199018A (en) | 2014-09-15 | 2014-09-15 | Safety alarm for electrified parts of substation |
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| CN107015168A (en) * | 2017-04-13 | 2017-08-04 | 国家电网公司 | A kind of electricity grid substation dc source pressure drop warning device |
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Application publication date: 20141210 |