CN105809860B - A kind of system for antitheft detection - Google Patents
A kind of system for antitheft detection Download PDFInfo
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- CN105809860B CN105809860B CN201610167159.1A CN201610167159A CN105809860B CN 105809860 B CN105809860 B CN 105809860B CN 201610167159 A CN201610167159 A CN 201610167159A CN 105809860 B CN105809860 B CN 105809860B
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- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 230000010355 oscillation Effects 0.000 claims description 9
- 229910002056 binary alloy Inorganic materials 0.000 claims description 8
- 210000002683 foot Anatomy 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 210000001367 artery Anatomy 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 230000009545 invasion Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
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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
- G08B13/191—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 using pyroelectric sensor means
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Abstract
The invention discloses a kind of system for antitheft detection, the system for antitheft detection includes power supply, sensing unit, amplifying unit, comparing unit, rp unit, storage unit, control gate cell, oscillating unit, counting unit, number of pulses setup unit, control unit and output unit.System of the present invention for antitheft detection can be promptly and accurately detection invade and position invasion position, has the characteristics that high sensitivity, stable and reliable in work, simultaneously, it is applied to antitheft detection system, it can realize and host to is sent the alarm signal of all detectors in system by a public signal wire, circuit structure is enormously simplified, the workload of installation, maintenance is reduced.
Description
Technical field
The present invention relates to electronic circuit technology field more particularly to a kind of systems for antitheft detection.
Background technology
The continuous improvement of living standard since with China's reform, requirement of the people to personal and property safety
It increasingly improves, antitheft detection system obtains more and more extensive answer as the critical facility of the accidents such as pre- rob-proof, theft
With.Currently widely used antitheft detection system is monitoring several systems for antitheft detection of deploying troops on garrison duty in region, can visit
The intrusion behavior being happened in monitoring region is surveyed, sends out alarm to host when invading, and be locked into invasion and set.But tradition
The each detector of antitheft detection system and host between be required to a signal wire, for transmitting each detector position
Alarm signal, the signal wire being connect with host when detector quantity is more also just accordingly increases, it may be possible to which tens are very
To hundreds of, not only installation is inconvenient, and also increases cost, and brings difficulty to daily maintenance.
Invention content
In view of the above technical problems, described to be used for the purpose of the present invention is to provide a kind of system for antitheft detection
The system of antitheft detection is applied to antitheft detection system, can realize all detections in system through a public signal wire
The alarm signal of device sends host to, enormously simplifies circuit structure, reduces the workload of installation, maintenance, while this is used for
The system of antitheft detection has the characteristics that high sensitivity, stable and reliable in work.
For this purpose, the present invention uses following technical scheme：
A kind of system for antitheft detection, including：Power supply, sensing unit, amplifying unit, comparing unit, rp unit,
Storage unit, control gate cell, oscillating unit, counting unit, number of pulses setup unit, control unit and output unit；
The power supply is used for the system power supply for being entirely used for antitheft detection；
The sensing unit is electrically connected with amplifying unit, for detecting whether have human body process, and sensor signal is defeated
Go out to amplifying unit；
The amplifying unit is electrically connected with comparing unit, for being output to comparison list after being amplified to sensor signal
Member；
The comparing unit is electrically connected with rp unit, for comparing sensor signal voltage numerical value and reference voltage number
Value, sends out alarm signal, and comparison result is output to rp unit according to comparison result；
The rp unit is electrically connected with storage unit, for making storage unit reverse phase；
The storage unit is electrically connected with control gate cell, the alarm signal for keeping sensor to export, and is being sensed
Triggering control gate cell conducting when device output alarm signal；
The control gate cell is electrically connected with oscillating unit, counting unit, output unit, is alarmed for being exported in sensor
The oscillator signal that oscillating unit generates is sent to counting unit and output unit when signal；
The oscillating unit is electrically connected with control unit, for generating oscillator signal；
The counting unit is electrically connected with number of pulses setup unit, carry out by the number of pulses to oscillator signal based on
Number；
The number of pulses setup unit is electrically connected with control unit, and the oscillator signal for setting oscillating unit generation is every
Number of pulses in a period, to for for the system of antitheft detection setting respective markers；
Described control unit is electrically connected with oscillating unit, and the number of pulses for being generated when oscillating unit reaches number of pulses
When the numerical value of setup unit setting, control oscillating unit stops oscillation, and counting unit is resetted；
The external host of output unit, the pulse for generating oscillating unit in sensor output alarm signal are sent out
It is sent to external host, the sensor that host is alarmed according to the different identifications of the number of pulses of reception.
Particularly, the amplifying unit includes triode Q2 and operational amplifier IC2, and the triode Q2 base stages connection passes
Feel unit, emitter ground connection, collector connects positive pole；The power pins of the operational amplifier IC2 connect power supply, same to phase
The collector of input terminal connecting triode Q2, reverse inter-input-ing ending grounding, output end connect comparing unit.
Particularly, the comparing unit includes operational amplifier IC3 and potentiometer, and the operational amplifier IC3 power supplys draw
Foot connects the movable leg of power supply, in-phase input end connection amplifying unit, inverting input connection potentiometer, and output end connects reverse phase
Unit；Two fixed feets of the potentiometer connect power supply.
Particularly, the storage unit includes NAND gate G9, NAND gate G10, capacitance C9, resistance R14 and timer, described
Two input terminals of NAND gate G9 are separately connected the output end of rp unit and NAND gate G10, output end connection control gate cell；
The output end of the first input end connection NAND gate G9 of the NAND gate G10, the second input terminal is through resistance R14 connection DC power supplies
Anode；The capacitance C9 and timer are arranged in parallel between the second input terminal and ground of NAND gate G10.
Particularly, the control gate cell includes NOT gate G1 and NAND gate G2, and the NOT gate G1 input terminals connect NAND gate
G2 output ends, output end connection count unit and output unit；It is single that two input terminals of the NAND gate G2 are separately connected storage
Member and oscillating unit.
Particularly, the oscillating unit includes NOT gate G3, NAND gate G4 and capacitance C1 and resistance R1, the NOT gate G3 inputs
End connection NAND gate G4 output ends, output end connection control gate cell；The first input end connection control of the NAND gate G4 is single
Member, the second input terminal connect NOT gate G3 input terminals through first resistor, and the capacitance C1 is parallel to NOT gate G3 output ends and NAND gate
Between the second input terminals of G4.
Particularly, the counting unit includes binary system serial counter, the binary system serial counter pulse input
End connection control gate cell, clear terminal connect control unit, and pulse output end connects number of pulses setup unit.
Particularly, the number of pulses setup unit includes phase inverter, single-pole double-throw switch (SPDT), diode and resistance R2, institute
State phase inverter pulse input end connection count unit, phase inverter connect respectively per road pulse output end a single-pole double-throw switch (SPDT) and
One end of resistance R2, the other end connection output unit and control unit of the resistance R2 are connected in parallel to after one diode；Wherein,
Phase inverter is per road in output, and the cathode of the moved end connection diode of the single-pole double-throw switch (SPDT), two non-moving ends are separately connected instead
The pulse input end and pulse output end of phase device.
Particularly, described control unit includes the first trigger, the second trigger, capacitance C2, capacitance C3, resistance R3, electricity
R4, NOT gate G5, NAND gate G6, NOT gate G7, NAND gate G8 are hindered, the first flip-flop data input terminal connects output unit, when
Clock input terminal connects number of pulses setup unit, and reset terminal is grounded through capacitance C2, and set end ground connection, output end is through resistance R3 connections
Reset terminal, output reverse side connect the input end of clock of the second trigger；The second flip-flop data input terminal connection output
Unit, input end of clock connect the output reverse side of the first trigger, and reset terminal is grounded through capacitance C3, set end ground connection, output
End is through resistance R4 connection reset terminals, the input terminal all the way of output reverse side connection NAND gate G8；The NOT gate G5 input terminals difference
NAND gate G6 output ends and counting unit are connected, output end connects oscillating unit；Two input terminals of the NAND gate G6 are distinguished
Connect NOT gate G7 output ends and storage unit；The input terminal of the NOT gate G7 connects NAND gate G8 output ends；The NAND gate G8
Two input terminals be separately connected the output reverse side of the first trigger and the second trigger.
Particularly, the output unit includes that the base stage of triode Q1 and resistance R5, the triode Q1 connect through resistance R5
Control gate cell and counter unit, the external host of emitter are connect, collector connects number of pulses setup unit and control unit.
System proposed by the present invention for antitheft detection, when sensing unit has detected that human body passes through, sensor letter
It number is amplified through amplifying unit, comparing unit, rp unit, storage unit, compared with a reference value, after reverse phase and signal keep
Output, control gate cell conducting, the pulse that oscillating unit generates are sent to output unit and counting unit by controlling gate cell,
Counting unit number of pulses amount is counted, when the generation of each period that count value reaches the setting of number of pulses setup unit is shaken
When the quantity swung, control unit control oscillating unit stops oscillation, and counting unit is resetted, the external host of output unit, will
The pulse that oscillating unit each period generates is sent to host, and host has detected human body according to the number of pulses differentiation received
The position of the sensor of process sends out alarm, and is locked into invasion and sets.The system for antitheft detection can be promptly and accurately
Detection invasion, and position invasion position, have the characteristics that high sensitivity, stable and reliable in work, meanwhile, be applied to antitheft
Detection system can realize and send the alarm signal of all detectors in system to host by a public signal wire,
Circuit structure is enormously simplified, the workload of installation, maintenance is reduced.
Description of the drawings
Fig. 1 is the circuit system structural schematic diagram provided in an embodiment of the present invention for antitheft detection.
Fig. 2 is the circuit system schematic diagram provided in an embodiment of the present invention for antitheft detection.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.It is understood that tool described herein
Body embodiment is used only for explaining the present invention rather than limitation of the invention.It also should be noted that for the ease of retouching
It states, only some but not all contents related to the present invention are shown in the drawings, it is unless otherwise defined, used herein all
Technical and scientific term have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.Herein at this
The term used in the description of invention, which is only for the purpose of describing specific embodiments, is not intended to limit this hair
It is bright.Term " and or " used herein includes any and all combinations of one or more relevant Listed Items.
Embodiment one
It please refers to shown in Fig. 1, Fig. 2, Fig. 1 is the circuit structure of the system provided in an embodiment of the present invention for antitheft detection
Schematic diagram, Fig. 2 are the circuit system schematic diagrams provided in an embodiment of the present invention for antitheft detection.
In the present embodiment, the system for antitheft detection includes power supply 101, sensing unit 102, amplifying unit 103, compares
Unit 104, rp unit 105, storage unit 106, control gate cell 107, oscillating unit 108, counting unit 109, umber of pulse
Measure setup unit 110, control unit 111 and output unit 112.
The power supply 101 is used to, to the system power supply for being entirely used for antitheft detection, specifically include；Transformer T1, rectifier bridge
VC1, voltage-stablizer V1, capacitance C10, capacitance C11, capacitance C12, capacitance C13.Wherein, transformer T1 input terminals connect external power supply,
Output end connects the exchange side of rectifier bridge VC1, the input terminal of the DC side anode connection voltage-stablizer V1 of rectifier bridge VC1, DC side
Negativing ending grounding, the output end connection of voltage-stablizer V1 are used for other circuits of the system of antitheft detection, common end grounding, capacitance C10
And capacitance C11 is connected in parallel between the input terminal and ground of voltage-stablizer V1, capacitance C12 and capacitance C13 are connected in parallel in voltage-stablizer
Between the output end and ground of V1.
The sensing unit 102 is electrically connected with amplifying unit 103, for detecting whether there is human body process, and by sensor
Signal is output to amplifying unit 103, specifically includes：Sensor IC 1 and resistance R6.Wherein, the power end connection of sensor IC 1 is straight
Galvanic electricity source, signal end connect amplifying unit 103 and the other end ground connection of resistance R6, resistance R6.Sensor described in the present embodiment
IC1 uses pyroelectric infrared sensor, and concrete model P2288 is a kind of only to the infrared ray responsive semiconductor of human body radiation
Device, the output low frequency signal when there is human body to pass through before sensor.
The amplifying unit 103 is electrically connected with comparing unit 104, for being output to ratio after being amplified to sensor signal
Compared with unit 104, the letter of the base stage connection sensor IC 1 of triode Q2 and operational amplifier IC2, the triode Q2 is specifically included
Number end, emitter ground connection, collector connect positive pole；The power pins of the operational amplifier IC2 connect power supply, with mutually defeated
Enter to hold the collector of connecting triode Q2, reverse inter-input-ing ending grounding, output end to connect comparing unit 104.
The comparing unit 104 is electrically connected with rp unit 105, for comparing sensor signal voltage numerical value and benchmark electricity
Numerical value is pressed, alarm signal is sent out according to comparison result, and comparison result is output to rp unit 105, specifically included：Operation is put
Big device IC3 and potentiometer W1, the operational amplifier IC3 power pins connection power supply, in-phase input end connect operational amplifier
The output end of IC2, the movable leg of inverting input connection potentiometer W1, output end connect rp unit 105；The potentiometer W1
Two fixed feets connect power supply.
The rp unit 105 is electrically connected with storage unit 106, for making 106 reverse phase of storage unit, specifically uses three poles
The output end of the base stage connection operational amplifier IC3 of pipe Q3, the triode Q3, emitter ground connection, collector connection storage are single
Member 106.
The storage unit 106 is electrically connected with control gate cell 107, the alarm signal for keeping sensor to export, and
In sensor output alarm signal, triggering control gate cell 107 is connected, and specifically includes NAND gate G9 and NAND gate G10, described
Two input terminals of NAND gate G9 are separately connected the output end of the base stage and NAND gate G10 of triode Q3, output end connection control
Gate cell 107；Two input terminals of the NAND gate G10 be separately connected triode Q3 emitter and the 9th NAND gate G9 it is defeated
Outlet.
The storage unit 106 is electrically connected with control gate cell 107, the alarm signal for keeping sensor to export, and
In sensor output alarm signal, triggering control gate cell 107 is connected, and specifically includes NAND gate G9, NAND gate G10, capacitance
C9, resistance R14 and timer AN, two input terminals of the NAND gate G9 are separately connected the base stage and NAND gate of triode Q3
The output end of G10, output end connection control gate cell 107；The first input end of the NAND gate G10 connects the 9th NAND gate G9
Output end, the second input terminal is through resistance R14 connection DC power anodes；The capacitance C9 and timer AN be arranged in parallel in
Between the second input terminal and ground of NOT gate G10.
The control gate cell 107 is electrically connected with oscillating unit 108, counting unit 109, output unit 112, for passing
The oscillator signal that oscillating unit 108 generates is sent to counting unit 109 and output unit 112 when sensor output alarm signal,
NOT gate G1 and NAND gate G2 are specifically included, the NOT gate G1 input terminals connect NAND gate G2 output ends, output end connection count list
Member 109 and output unit 112；Two input terminals of the NAND gate are separately connected the output end and oscillating unit of NAND gate G9
108。
The oscillating unit 108 is electrically connected with control unit 111, for generating oscillator signal, is specifically included：NOT gate G3,
NAND gate G4 and capacitance C1 and resistance R1, the NOT gate G3 input terminals connect NAND gate G4 output ends, and output end connects NAND gate
The input terminal of G2；The first input end of the NAND gate G4 connects control unit 111, and the second input terminal is through resistance R1 connection NOT gates
G3 input terminals, the capacitance C1 are parallel between the second input terminal of NOT gate G3 output ends and NAND gate G4.
The counting unit 109 is electrically connected with number of pulses setup unit 110, for the number of pulses of oscillator signal into
Row counts, and the specific pulse input end using binary system serial counter C1, the binary system serial counter C1 connects NOT gate
The output end of G1, clear terminal connect control unit 111, and pulse output end connects number of pulses setup unit 110.
The number of pulses setup unit 110 is electrically connected with control unit 111, for setting the generation of oscillating unit 108
Number of pulses in each period, to for respective markers are arranged for the system of antitheft detection, specifically include：Phase inverter P1,
First to the 6th single-pole double-throw switch (SPDT) K1, K2, K3, K4, K5, K6, first to the 6th diode D1, D2, D3, D4, D5, D6 and electricity
Hinder R2, the pulse output end of the pulse input end connection binary system serial counter C1 of the phase inverter P1, the of phase inverter P1
One pulse output end, which is connected, is connected in parallel to one end of resistance R2 after the first single-pole double-throw switch (SPDT) K1 and the first diode, with such
It pushes away, until being connected in parallel to the after the 6th pulse output end series connection the 6th single-pole double-throw switch (SPDT) K6 and the 6th diode D6 of phase inverter P1
One end of two resistance R2, the other end connection output unit 112 and control unit 111 of the resistance R2；Wherein, phase inverter P1 is every
In the output of road, the cathode of the moved end connection diode of the single-pole double-throw switch (SPDT), two non-moving ends are separately connected phase inverter P1's
Pulse input end and pulse output end.
Single 111 yuan of the control is electrically connected with oscillating unit 108, and the number of pulses for being generated when oscillating unit 108 reaches
When the numerical value set to number of pulses setup unit, control oscillating unit 108 stops oscillation, and counting unit 109 is resetted, and has
Body include the first trigger F1, the second trigger F2, capacitance C2, capacitance C3, resistance R3, resistance R4, NOT gate G5, NAND gate G6,
NOT gate G7, NAND gate G8, the first trigger F1 data input pins connect output unit 112, and input end of clock connects six
The common end of the anode of diode D1, D2, D3, D4, D5, D6, reset terminal are grounded through the second capacitance C2, set end ground connection, output
End connects the input end of clock of the second trigger F2 through resistance R3 connection reset terminals, output reverse side；The second trigger F2
Data input pin connect output unit 112, input end of clock connect the first trigger F1 output reverse side, reset terminal is through electricity
Hold C3 ground connection, set end ground connection, output end is through resistance R4 connection reset terminals, the input all the way of output reverse side connection NAND gate G8
End；The input terminal of the NOT gate G5 is separately connected the clear terminal of the output end and binary system serial counter C1 of NAND gate G6, defeated
Outlet connects the second input terminal of NAND gate G4；Two input terminals of the NAND gate G6 be separately connected NOT gate G7 output end and
The second input terminal of NAND gate G10；The input terminal of the NOT gate G7 connects NAND gate G8 output ends；Two of the NAND gate G
Input terminal is separately connected the output reverse side of the first trigger F1 and the second trigger F2.
112 external host of the output unit, for generate oscillating unit 108 in sensor output alarm signal
Pulse is sent to external host, and the sensor that host is alarmed according to the different identifications of the number of pulses of reception specifically includes
Triode Q1 and resistance R5.Wherein, output end and binary serial meter of the base stage of triode Q1 through resistance R5 connection NOT gates G1
The pulse input end of number device C1, the external host of emitter, collector are separately connected the data input pin of the first trigger F1, second
The data input pin of trigger F2 connects the common end of the anode of six diodes D1, D2, D3, D4, D5, D6 with through resistance R2.
In the present embodiment, the System Working Principle for antitheft detection is：Transformer T1, rectifier bridge VC1, voltage-stablizer V1,
Capacitance C10, capacitance C11, capacitance C12, capacitance C13 form power supply unit, convert external AC power to DC power supply to whole
A circuit system for antitheft detection is powered.Power on circuitry is started to work, and sensor IC 1 exports faint low frequency signal, is passed through
The in-phase input end that operational amplifier IC3 is added to after the dc amplifier amplification that triode Q2, operational amplifier IC2 are constituted, with
The voltage of the inverting input of operational amplifier IC3 compares.The voltage of the inverting input of the IC3 is true by potentiometer W1
Fixed, the appropriate resistance value for adjusting potentiometer W1 makes the in-phase input end electricity of IC3 when human body, which has been not detected, in sensor IC 1 passes through
It forces down when anti-phase input terminal voltage, operational amplifier IC3 exports low level；When sensor IC 1 has detected that human body passes through,
The homophase input terminal voltage of IC3 is set to be higher than anti-phase input terminal voltage, operational amplifier IC3 exports high level.When sensor IC 1 is examined
When having measured human body and passing through, operational amplifier IC3 exports high level, exports low level after triode Q3 reverse phases, the low level
Acting on the input terminal of the basic RS filpflop of NAND gate G9, NAND gate G10 composition makes its overturning, then the high electricity of NAND gate G9 outputs
It is flat.Hereafter, when sensor IC 1 detects that the alarm signal that human body passes through disappears, the state of trigger will not change, to
Alarm signal is stored and is kept.Capacitance C9, resistance R14 and timer AN compositions power on clearing delay circuit, after the power is turned on, capacitance C9
In low level, ensure that rest-set flip-flop will not be triggered overturning in setting time, thus in system electrification following period of time, though
Right operating personnel do not leave scene, but not send out alarm signal.Meanwhile after the power is turned on, capacitance C9 is in low level, through with it is non-
The clear terminal that door G6 adds to counter C1 makes its reset, and the input terminal of NAND gate G4 is added to through NAND gate G5, NAND gate G6, makes
Oscillator is in failure of oscillation state.When NAND gate G9 output high level, the control door that NOT gate G1 and NAND gate G2 are constituted is opened, non-
The rectangular pulse that the oscillator of the door compositions such as G3 and NAND gate G4 generates is sent to counter C1 and triode Q1 by controlling door.
The diode AND gate and phase inverter P1 of first to the 6th diode D1, D2, D3, D4, D5, D6 and resistance R2 compositions, first to
6th single-pole double-throw switch (SPDT) K1, K2, K3, K4, K5, K6 forms number of pulses initialization circuit, and phase inverter P1 is realized to counter C1
Diode AND gate is given in the complementary operation of output signal, first to the 6th single-pole double-throw switch (SPDT) K1, K2, K3, K4, K5, K6 decision
Input hour counter output end or counter export the reversed-phase output after inverted device P1, when switch is placed in the positions ON
When, it is counter output；It is counter reversed-phase output when switch is placed in OFF position.Therefore pass through the first to the 6th hilted broadsword
Commutator K1, K2, K3, K4, K5, K6 be arranged it is different open, pipe combination, number of pulses can set between 1-63, setting
Label of the numerical value as the sensor.The pulse that counter C1 generates oscillator counts, and different quantity, which corresponds to, to be counted
Output different device C1 and phase inverter P1, when count value reach number of pulses setup unit setting numerical value when, counter C1 and
The output of phase inverter P1 and number of pulses setup unit preset first to the 6th single-pole double-throw switch (SPDT) K1, K2, K3, K4, K5, K6
Open, pipe combination it is corresponding, make diode AND gate input be high level, it is corresponding output also be high level.The high level signal
It is sent to control unit 111, oscillator is made to stop oscillation and reset counter C1.First trigger F1, the second trigger F2,
Capacitance C2, capacitance C3, resistance R3, resistance R4, NOT gate G5, NAND gate G6, NOT gate G7, NAND gate G8 composition oscillating circuits, first
Trigger F1 and the second trigger F2 connects into monostable flipflop, and when stable state, their output end is low level, when two poles
When Guan Yumen output height allocates, rising edge signal makes the first trigger F1 enter temporary stable state, and it is high level to be jumped on output end,
It is adjusted to low level under output reverse side, the low level signal of the output reverse side is through NAND gate G8, NOT gate G7, NAND gate G6 reverse phases
After add to counter C1 clear terminals and make its clearing, while adding to NAND gate G4 after NOT gate G5 reverse phases again makes oscillator stop work
Make.After the temporary stable state of first trigger F1, low level is adjusted under output end, it is high level to export jump on reverse side, is touched
The second trigger F2 overturnings are sent out, into temporary stable state, the second trigger F2 output ends output low level makes counter C1 still in clear
Nought state, oscillator is still in stop working state.First trigger F1 and the second trigger F2 are used in combination, and reduce timing
The capacity of component capacitance C2 and capacitance C3 avoid the electrolytic capacitor being easily varied using capacity, ensure the stabilization of delay time.
After the temporary stable state of second trigger F2, oscillator is resumed work, and the above-mentioned course of work will repeat, and will produce setting quantity
Pulse, so move in circles, delay at regular intervals is issued by the pulse of setting quantity, until host press reset or
It is re-powered after down circuitry.Triode Q1 and resistance R5 form output unit, will control door output, oscillator generation set
The emitter through triode Q1 is sent to host after the pulse signal amplification of fixed number amount.When multiple system groups for antitheft detection
When at antitheft detection system, the emitter of the triode Q1 of each system output unit for antitheft detection is all connected to public
Signal transmssion line on, when no alarm signal, each triode Q1 is turned off, and each system for antitheft detection is mutually only
It stands, interfere with each other；When some for antitheft detection system detectio to when thering is human body to pass through, it is defeated that triode Q1 will control door
It is sent to host after the pulse signal amplification for the setting quantity that go out, oscillator generates.Multiple it is for antitheft detection if having
System has detected human body process, host by according to the difference of the duration impulse quantity received, distinguish send out alarm for preventing
The position for stealing the system of detection, to be positioned to invasion.
It should be noted that in above-described embodiment, the preferred models 7809 of voltage-stablizer V1, the counter C1 is preferred
Model CD4040, the preferred model CD4069 of phase inverter P1, the first trigger F1 and the second trigger F2 is preferred
Model CD4013.
It should be noted that in above-described embodiment, the power supply 101, sensing unit 102, amplifying unit 103, relatively list
Member 104, rp unit 105, storage unit 106, control gate cell 107, oscillating unit 108, counting unit 109, number of pulses
The circuit of setup unit 110, control unit 111 and output unit 112 is preferred circuit structure, other can realize identical
The circuit structure of function can do equivalent replacement.
When technical scheme of the present invention has detected that human body passes through by sensing unit, sensor signal through amplifying unit,
Comparing unit, rp unit, storage unit are amplified, are exported compared with a reference value, after the holding of reverse phase and signal, control door list
Member conducting, the pulse that oscillating unit generates are sent to output unit and counting unit by controlling gate cell, and counting unit is to arteries and veins
Quantity is rushed to be counted, when generating the quantity of oscillation in each period that count value reaches the setting of number of pulses setup unit,
Control unit control oscillating unit stops oscillation, and counting unit is resetted, and the external host of output unit is each by oscillating unit
The pulse that period generates is sent to host, and host distinguishes the sensor for detecting that human body passes through according to the number of pulses received
Position, send out alarm, and be locked into invasion and set.The system for antitheft detection can be promptly and accurately detection invasion simultaneously
Positioning invasion position, has the characteristics that high sensitivity, stable and reliable in work, meanwhile, it is applied to antitheft detection system, it can
It realizes and host to is sent the alarm signal of all detectors in system by a public signal wire, enormously simplify circuit
Structure reduces the workload of installation, maintenance.
Note that above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (5)
1. a kind of system for antitheft detection, it is characterised in that including：Power supply, sensing unit, amplifying unit, comparing unit,
Rp unit, storage unit, control gate cell, oscillating unit, counting unit, number of pulses setup unit, control unit and defeated
Go out unit；
The power supply is used for the system power supply for being entirely used for antitheft detection；
The sensing unit is electrically connected with amplifying unit, for detecting whether there is human body process, and sensor signal is output to
Amplifying unit；
The amplifying unit is electrically connected with comparing unit, for being output to comparing unit after being amplified to sensor signal；
The comparing unit is electrically connected with rp unit, for comparing sensor signal voltage numerical value and reference voltage numerical value, root
Alarm signal is sent out according to comparison result, and comparison result is output to rp unit；
The rp unit is electrically connected with storage unit, for making storage unit reverse phase；
The storage unit is electrically connected with control gate cell, the alarm signal for keeping sensor to export, and defeated in sensor
Triggering control gate cell conducting when going out alarm signal；
The control gate cell is electrically connected with oscillating unit, counting unit, output unit, in sensor output alarm signal
When by oscillating unit generate oscillator signal be sent to counting unit and output unit；
The oscillating unit is electrically connected with control unit, for generating oscillator signal；
The counting unit is electrically connected with number of pulses setup unit, is counted for the number of pulses to oscillator signal；
The number of pulses setup unit is electrically connected with control unit, and the oscillator signal for setting oscillating unit generation is each all
Number of pulses in phase, to for for the system of antitheft detection setting respective markers；
Described control unit is electrically connected with oscillating unit, and the number of pulses for being generated when oscillating unit reaches number of pulses setting
When the numerical value of unit setting, control oscillating unit stops oscillation, and counting unit is resetted, and specifically includes the first trigger, the
Two triggers, capacitance C2, capacitance C3, resistance R3, resistance R4, NOT gate G5, NAND gate G6, NOT gate G7, NAND gate G8, described first
Flip-flop data input terminal connects output unit, and input end of clock connects number of pulses setup unit, and reset terminal connects through capacitance C2
Ground, set end ground connection, output end connect the input end of clock of the second trigger through resistance R3 connection reset terminals, output reverse side；
The second flip-flop data input terminal connects output unit, and input end of clock connects the output reverse side of the first trigger, multiple
Position end is grounded through capacitance C3, set end ground connection, and output end connects NAND gate G8's through resistance R4 connection reset terminals, output reverse side
Input terminal all the way；The NOT gate G5 input terminals are separately connected NAND gate G6 output ends and counting unit, and output end connection oscillation is single
Member；Two input terminals of the NAND gate G6 are separately connected NOT gate G7 output ends and storage unit；The input terminal of the NOT gate G7
Connect NAND gate G8 output ends；Two input terminals of the NAND gate G8 are separately connected the defeated of the first trigger and the second trigger
Go out reverse side；
The external host of output unit, for being sent to the pulse that oscillating unit generates in sensor output alarm signal
External host, the sensor that host is alarmed according to the different identifications of the number of pulses of reception；The amplifying unit includes three
Pole pipe Q2 and operational amplifier IC2, the triode Q2 base stages connect sensing unit, emitter ground connection, and collector connects power supply
Anode；The power pins of the operational amplifier IC2 connect power supply, the collector of in-phase input end connecting triode Q2, reverse phase
Input end grounding, output end connect comparing unit；The comparing unit includes operational amplifier IC3 and potentiometer, the operation
Amplifier IC3 power pins connect the activity of power supply, in-phase input end connection amplifying unit, inverting input connection potentiometer
Foot, output end connect rp unit；Two fixed feets of the potentiometer connect power supply.
2. the system according to claim 1 for antitheft detection, which is characterized in that the storage unit include with it is non-
Door G9, NAND gate G10, capacitance C9, resistance R14 and timer, two input terminals of the NAND gate G9 are separately connected reverse phase list
The output end of member and NAND gate G10, the NAND gate G9 output ends connection control gate cell；The first of the NAND gate G10 is defeated
Enter the output end of end connection NAND gate G9, the second input terminal is through resistance R14 connection DC power anodes；The capacitance C9 and timing
Device is arranged in parallel between the second input terminal and ground of NAND gate G10.
3. the system according to claim 1 for antitheft detection, which is characterized in that the control gate cell includes NOT gate
G1 and NAND gate G2, the NOT gate G1 input terminals connect NAND gate G2 output ends, the NOT gate G1 output ends connection count unit
And output unit；Two input terminals of the NAND gate G2 are separately connected storage unit and oscillating unit.
4. the system according to claim 1 for antitheft detection, which is characterized in that the counting unit includes binary system
Serial counter, the binary system serial counter pulse input end connection control gate cell, clear terminal connect control unit, arteries and veins
Rush output end connection number of pulses setup unit.
5. the system according to claim 1 for antitheft detection, which is characterized in that the output unit includes triode
The base stage of Q1 and resistance R5, the triode Q1 control gate cell and counting unit through resistance R5 connections, the external host of emitter,
Collector connects number of pulses setup unit and control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167159.1A CN105809860B (en) | 2016-03-23 | 2016-03-23 | A kind of system for antitheft detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167159.1A CN105809860B (en) | 2016-03-23 | 2016-03-23 | A kind of system for antitheft detection |
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| Publication Number | Publication Date |
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| CN105809860A CN105809860A (en) | 2016-07-27 |
| CN105809860B true CN105809860B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610167159.1A Expired - Fee Related CN105809860B (en) | 2016-03-23 | 2016-03-23 | A kind of system for antitheft detection |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115100805B (en) * | 2022-05-13 | 2023-08-25 | 宁波恒博通讯设备有限公司 | Low false alarm processing method based on infrared pyroelectric |
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| CN87100371A (en) * | 1986-01-20 | 1987-07-29 | 洛迦诺电子工业股份有限公司 | Light barrier |
| US4768020A (en) * | 1985-12-24 | 1988-08-30 | Paul E. Yarbrough, Jr. | Hot body intrusion activated light control unit with daylight photocell deactivation override |
| US4940967A (en) * | 1989-08-31 | 1990-07-10 | Burle Technologies, Inc. | Balanced digital infrared detector circuit |
| CN2414549Y (en) * | 2000-03-20 | 2001-01-10 | 曹增全 | Digital type infrared ray intelligent sensor |
| CN201947241U (en) * | 2010-12-21 | 2011-08-24 | 重庆电力高等专科学校 | Power output automatic control device |
| CN203179210U (en) * | 2013-03-01 | 2013-09-04 | 张红梅 | Carpet type human body detector |
| CN204926372U (en) * | 2015-08-15 | 2015-12-30 | 欧阳旭 | Laser, infrared beam formula perimeter invasion detection system that continues |
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2016
- 2016-03-23 CN CN201610167159.1A patent/CN105809860B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768020A (en) * | 1985-12-24 | 1988-08-30 | Paul E. Yarbrough, Jr. | Hot body intrusion activated light control unit with daylight photocell deactivation override |
| CN87100371A (en) * | 1986-01-20 | 1987-07-29 | 洛迦诺电子工业股份有限公司 | Light barrier |
| US4940967A (en) * | 1989-08-31 | 1990-07-10 | Burle Technologies, Inc. | Balanced digital infrared detector circuit |
| CN2414549Y (en) * | 2000-03-20 | 2001-01-10 | 曹增全 | Digital type infrared ray intelligent sensor |
| CN201947241U (en) * | 2010-12-21 | 2011-08-24 | 重庆电力高等专科学校 | Power output automatic control device |
| CN203179210U (en) * | 2013-03-01 | 2013-09-04 | 张红梅 | Carpet type human body detector |
| CN204926372U (en) * | 2015-08-15 | 2015-12-30 | 欧阳旭 | Laser, infrared beam formula perimeter invasion detection system that continues |
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| Publication number | Publication date |
|---|---|
| CN105809860A (en) | 2016-07-27 |
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