CN2587027Y - Wireless digital real-time distance measuring safety alarm - Google Patents

Wireless digital real-time distance measuring safety alarm Download PDF

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Publication number
CN2587027Y
CN2587027Y CN 02284181 CN02284181U CN2587027Y CN 2587027 Y CN2587027 Y CN 2587027Y CN 02284181 CN02284181 CN 02284181 CN 02284181 U CN02284181 U CN 02284181U CN 2587027 Y CN2587027 Y CN 2587027Y
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China
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circuit
pin
output
meets
wireless digital
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Expired - Fee Related
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CN 02284181
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Chinese (zh)
Inventor
吴麟章
徐祖明
彭义
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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Priority to CN 02284181 priority Critical patent/CN2587027Y/en
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Abstract

The utility model provides a wireless digital real-time distance measuring type safety alarm. The utility model comprises a voltage stabilizing circuit, a transmitting circuit and a receiving circuit, wherein, an encoder starting control circuit is especially increased in the transmitting circuit. The encoder starting control circuit is a square wave circuit with large duty cycles, the output of the encoder starting control circuit is connected with a control foot 14 of an encoder, and a transmitter works according to the duty cycles in a time sharing system. A re-triggerable monostable circuit and a zero-bit address forming circuit of a decoder are increased in the receiving circuit. A control end of a monostable time delay circuit is connected with an output foot 17 of a decoder U5, and narrow pulses outputted by the U5 are broadened into high electric levels which are sustained to the next pulse. The output of the monostable time delay circuit is connected with a phonetic alarm. The zero-bit address forming circuit of a circuit decoder is a T trigger, the output pulses of the decoder U5 are connected with a clock control end of the zero-bit address forming circuit of the decoder after opposite phase by Q3, and the output of the zero-bit address forming circuit of the decoder is connected with a zero-bit address foot of the decoder.

Description

Wireless digital type real time distance formula safety alarm
Technical field
The utility model relates to a kind of wireless digital type real time distance formula safety alarm, is used for the security alarm field.
Background technology
The safety alarm device that with antitheft is purpose in the market is many to touch or light activated switch triggering alarm, its essence is newspaper " police ".If the robber has walked around alert if, perhaps simply it to be stolen together with article integral body, have alert the generation and can not report to the police this moment, and the defective of this type of alarm is completely exposed.As taking precautions against the reminding alarm device that article are lost, the home market does not still have like product at present on the other hand.Existing radio alarming device is with one or two identical or limited carrier frequency work, when product is widely used in intensive crowd (as the market), the mutual interference of transmitter phase, make receiver produce false alarm, wrong report " safety ", energy consumption is big simultaneously, can't implement two one receipts for two monitored object, promptly so-called one drag two.
Summary of the invention
The purpose of this utility model is to serve as the purpose of the multiple receipts of basis realization with the micro radio remote control module.Particularly a kind of wireless digital type real time distance (+photosensitive) formula one machine is monitored the safety alarm of many things, and its monitoring distance can be set between 0.5 meter-20 meters.Transmitter is got in touch with in real time with newspaper " safety " mode and receiver, can realize being between transmitter and the receiver warning outside " safety " distance.When the transmitter launching condition was damaged, whether no matter be between transmitter and the receiver within " safety " distance, alarm also can provide warning (present embodiment is exposed with transmitter or power supply is cut to failure condition, and this function is controlled by switch).Simultaneously, anti-tampering, energy consumption is low.
The technical solution of the utility model is: this wireless digital type real time distance formula safety alarm, comprise power supply stabilization circuit, radiating circuit and receiving circuit, radiating circuit comprises address encoding circuit, carrier modulation and emission, receiving circuit comprises modulated wave reception and demodulation, address decoding circuitry, voice alarm circuit, particularly increase scrambler start-up control circuit at radiating circuit, scrambler start-up control circuit is a circuit and square-wave, its output connects the control pin 14 of scrambler, makes transmitter by its dutycycle time sharing system work.Increase retriggerable one shot multivibrator at receiving circuit, retriggerable one shot multivibrator is a single stabilization delay circuit, its control termination demoder U 5Output pin 17, with U 5The burst pulse broadening of output is the arrival that high level is maintained to next pulse, and the output of single stabilization delay circuit connects audio alert.
Described wireless digital type real time distance formula safety alarm, the square wave that its scrambler start-up control circuit is a big space rate forms circuit, comprises phase inverter U 1D, U 1F, U 1E, resistance R 1, R 2, capacitor C 1, diode D 1, its circuit connecting relation is: U 1DPin 8 meets scrambler U 2Control pin 14, U 1DPin 9 meets U 1EPin 10 and C 1An end, C 1Another termination U 1FPin 13 and R 1One end, R 1Another termination D 1Positive pole and R 2One end, R 2The other end and D 1Continuous back of negative pole and U 1EPin 11, U 1F12 join.
Described wireless digital type real time distance formula safety alarm, its described scrambler start-up control circuit has photosensitive control circuit, and photosensitive circuit connects the vibration control end of circuit and square-wave, comprises basic switch S 2One termination positive supply V CC, the other end and photoresistance R λOne end joins, R λOther end connecting resistance R 4An end and phase inverter U 1CPin 5, U 1CPin 6 meets D 2Negative pole, D 2Positive pole meets the vibration control end U of circuit and square-wave 1FPin 13.
Described wireless digital type real time distance formula safety alarm is established demoder 0 bit address at receiving circuit and is formed circuit, comprises d type flip flop U 6B, resistance R 10, R 11, connector J1, U 6BBe connected into the T trigger, demoder U 5The output pulse of pin 17 is through Q 3Anti-phase, Q 3Collector meets U 6BClock control end CLK pin 11, promptly corresponding U 5The output pulse of pin 17 is per jumped along U down for one 6BThe upset of Q end once.The output that demoder 0 bit address forms circuit meets demoder U 50 bit address end pin A 0
Described wireless digital type real time distance formula safety alarm, its retriggerable one shot multivibrator comprises monostable circuit U 6A, capacitor C 6, resistance R 8, R 9, R 12, R 13, diode D 5, D 6, D 7, triode Q 3, its circuit connecting relation is: demoder U 5Output pin 17 meet U 6AControl pin 6 and R 8One end, R 8Another termination D 5Positive pole, D 5Negative pole meets Q 3Base stage, Q 3Collector meets R 9One end, D 6Negative pole and U 6BClock control end CLK pin 11, D 6Positive pole meets U 6APin 4, C 6Anodal, D 7Positive pole and R 13One end, D 7Negative pole meets R 13The other end, R 12One end, R 12Another termination U 6APin 1, Q 3Emitter, C 6Minus earth, R 9Another termination V CC, U 6APin 2 is through resistance R 14Meet voice alarm circuit BELL.
Described wireless digital type real time distance formula safety alarm, its described demoder 0 bit address forms circuit, can make connector J1 pin 3,4 or pin 2,3 short circuits, U by external switch or wire jumper 6BThe Q fixing output of end " 1 " or " 0 ", promptly demoder 0 bit address is fixed as " 1 " or " 0 ".Its circuit connecting relation is: R10 one termination U 6BS end, J1 pin 4, R11 one termination U 6BR end, J1 pin 2, the other end ground connection of R10, R11, J1 pin 3 meets VCC.
Described wireless digital type real time distance formula safety alarm, the delay time that is retriggerable one shot multivibrator is the cycle of 1～1.5 times multivibrator.
Described wireless digital type real time distance formula safety alarm, the oscillator dutycycle that is described multivibrator is 85%～95%.
The utility model compared with prior art has following major advantage:
The one, post a letter and separate with warning, be applicable to monitoring in real time under object and the he or she's separation case, and can monitor a plurality of objects (present embodiment is two) simultaneously;
The 2nd, the type of alarm difference, that common alarm is reported is " police ", and the utility model is real-time newspaper " safety ".The disturbed destruction of common alarm has " police " and can not report, and the utility model is then just the opposite, as long as receiver can not receive " safety " signal, is bound to report to the police.
The 3rd, real time distance mode of the present utility model, its anti-loss prompt facility is that common alarm is not available, this function is very practical in the crowd of various occupations.
The 4th, anti-tampering, energy consumption is low, volume microminiaturization, simple in structure, be convenient to produce and promote.
When product is widely used in intensive crowd (as the market), receive function and get rid of the phase mutual interference, do not produce false alarm, more can not report " safety " by mistake.
Description of drawings
Fig. 1 is the utility model functional-block diagram;
Fig. 2 is the physical circuit schematic diagram of Fig. 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described further.
As shown in Figure 1, circuit block diagram composition of the present utility model comprises: address encoding circuit, carrier modulation and emission, modulated wave reception and demodulation, address decoding circuitry, audio alert and power supply stabilization circuit; Described circuit is formed and is comprised that also scrambler start-up control, retriggerable one shot multivibrator, demoder 0 bit address form circuit.
As shown in Figure 2, physical circuit of the present utility model is as follows:
1, transmitter comprises address encoding circuit, carrier frequency modulation and emission and scrambler start-up control circuit.
Address encoding circuit: coding circuit can be by scrambler U 2, R 3Constitute, A0-A11 is an address bit, " 0 ", " 1 " is arranged and the three kinds of states that suspend, and 531441 kinds of geocodings can be arranged at most.TE is the scrambler control end, and low level is effective.R 3The pulse width of decision geocoding, it needs and R 7Be used.U 2Pin 17 is for geocoding output, with U 3Pin 3 connects.
Carrier frequency modulation and emission: U 3Be modulation and transmitter module, the carrier frequency of present embodiment transmitter module is 315MHZ, and geocoding adopts the AM mode to modulate to reduce power consumption as modulation signal.When modulation signal was low level, transmitter current was zero, therefore selects suitable coding to help reducing power consumption.
Scrambler start-up control: can be by phase inverter U 1C-U 1F, resistance R 1, R 2, R 4, capacitor C 1, diode D 1, D 2And switch S 2Form.U 1D-U 1F, C 1, D 1, R 1, R 2Form multivibrator, D 1Effect can make this oscillator dutycycle be easy to reach more than 90%.Its output direct control encode device U 2, work as U 2When pin 14 was high level, scrambler quit work, and is output as low level, and transmitter current is zero, the multivibrator of big space rate, and making transmitter actual is time sharing system work, can realize that technically pilosity one is received or multimachine is worked simultaneously.Because this so-called timesharing is not constraint between each transmitter, also just have simultaneously, therefore may form interference to receiver, retriggerable one shot multivibrator can be got rid of this interference.The circuit and square-wave of big space rate can cut down the consumption of energy on the other hand to greatest extent.U 1C, photoresistance R λ, R 4, D 2, S 2Form photosensitive circuit; S 2Be exposure warning function switch, S 2If close the back unglazed according to R λ, U 1CPin 5 current potentials are lower than 1/2V CC, phase inverter output high level.Because D 2Isolation, circuit and square-wave is not exerted an influence; As illumination R λThe time, its resistance diminishes, U 1CPin 5 current potentials are higher than 1/2V CC, the phase inverter output low level.D 2Clamping action circuit and square-wave is quit work, U 2Pin 14 is positioned at high level, and emission stops, and reaches the purpose that exposure is reported to the police.
Circuit connecting relation is: U 1Pin 8 meets U 2Pin 14, U 1Pin 9 pin 10 and C 1An end, C 1Another termination U 1Pin 13, D 2Positive pole and R 1One end, R 1Another termination D 1Positive pole and R 2One end, R 2The other end and D 1Negative pole links to each other, and goes back and U 1Pin 11,12 joins; Switch S 2One termination positive supply V CC, the other end and photoresistance R λOne end joins, R λAnother termination R 4One end and U 1Pin 5, U 1Pin 6 meets D 2Negative pole.
Figure chips U 1Be hex inverter 4069 (or 14069,40106), U 2, U 5Be respectively coding, decoding integrated circuit PT2262, PT2272 (or HS2262, HS2272), U 6(U 6A, U 6B) be double D trigger 4013, U 3, U 4Be respectively miniature emission, receiver module F05C, J04H (or F05, J04 series).
2, power supply stabilization circuit: can be respectively by switch S 1, C 2, C 3, D 3, R 5, Q 1And S 3, C 4, C 5, D 4, R 6, Q 2Form.Simple and easy mu balanced circuit guarantees that cell voltage does not influence emissive power or receiving sensitivity when descending.Stabilivolt D 3, D 4Determine the operating voltage of transmitter, receiver respectively.Present embodiment is to change D 3Voltage stabilizing value (its structural drawing two does not draw), reach the purpose of setting monitoring distance.Based on characteristics of the present utility model, power switch S 1If link to each other, can be used for antitheft with " door " of article.
3, receiver comprises:
Modulating wave receives and demodulation: can be by receiver module U 4Finish.U 4Adopt the ultra-audio circuit structure of J04E uniqueness, the encapsulation of SMT process resin includes the amplification shaping, is output as data-signal directly to demoder, and is extremely easy to use, is a kind of superregeneration module of good cost performance.Be output as zero level state (noiseless interference) during the J04E no signal.Export by pin 4 by the modulating wave after J04H reception, demodulation and the shaping (data-signal).U 4Pin 4 meets decoding integrated circuit U 5Pin 14, U 4Pin 1 connects positive supply, pin 2 ground connection, and pin 3 is a test lead.
Address decoding circuitry: decoding circuit can be by demoder U 5, R 7Constitute.Address bit A 0-A 11Coding must be consistent with transmitter corresponding encoder address, A 0The position is controlled by demoder 0 bit address and forms circuit, implements two one receipts (if pilosity one is received, can realize equally) to satisfy.Work as U 5When the signal encoding of pin 14 input is identical with himself geocoding, decoded result is by pin 17 output high level, otherwise perseverance is a low level, as seen is because the change of demoder address makes many group alarms device can work on the same carrier frequency, can be identified and does not disturb mutually.Note R 7Need and R 3Parameter cooperates.
Retriggerable one shot multivibrator: can be by U 6A, C 6, R 8, R 9, R 12, R 13, D 5, D 6, D 7, Q 3Form.Because transmitter module U 3Be intermittent work mode, so decoding circuit U 5Pin 17 output be a monopulse, i.e. " safety " signal, the effect of retriggerable one shot multivibrator is exactly with U 5The burst pulse broadening of output is a high level, is maintained to the arrival of next pulse.Monostable width in the time if there is not pulse to arrive, U 6APin 1 output low level, pin 2 is a high level, so by R 14, the sound circuit formed of voice hummer Bell gets electric and report to the police.
It is as follows to trigger the monostable course of work again: U 5U is passed through in the pulse of pin 17 6APin 6 (S end) makes U 6ASet, after this Q end passes through R 12, R 13To C 6Charging is simultaneously at U 5Pin 17 is between high period, Q 3Saturation conduction is with C 6The lotus of charging is released rapidly behind the last subpulse.Therefore as long as at C 6Be not charged to 1/2V CCBefore have pulse to arrive, U 6APin 1 is kept high level always, if at C 6Charge to 1/2V CCDuring voltage, also there is not pulse to make Q 3Saturation conduction, U 6APin 4 (R end) can make U 6ABe reset to " 0 ", C 6On voltage pass through D 7, R 12Bleed off fast, wait for later trigger action S end set.This monostable width must be greater than the cycle of transmitter multivibrator, to solve the simultaneity problem that above-mentioned transmitter may exist.
Its circuit connecting relation is: U 5Pin 17 meets U 6APin 6, R 8One end, R 8Another termination D 5Positive pole, D 5Negative pole meets Q 3Base stage, collector meets R 9One end, D 6Negative pole and U 6BPin 11, D 6Positive pole meets U 6APin 4, C 6Anodal, D 7Positive pole and R 13One end, D 7Negative pole meets R 13The other end, R 12One end, R 12Other end U 6APin 1, Q 3Emitter, C 6Minus earth, R 9Another termination V CCU 6APin 2 connects voice alarm circuit.
Demoder 0 bit address forms circuit: can be by d type flip flop U 6B, resistance R 10, R 11, connector J1 forms.U 6BBe connected into the T trigger, demoder U 5The output pulse of pin 17 is through Q 3Anti-phase, Q 3Collector meets U 6BClock control end CLK pin 11, promptly corresponding U 5The output pulse of pin 17 is per jumped along U down for one 6BThe upset of Q end once.The output that demoder 0 bit address forms circuit meets demoder U 50 bit address end pin A 0
Two transmitters during present embodiment is received with two one are example, and its coded address has only A 0The position is different, so said process is exactly to get in touch with the process that receives two transmitters respectively.Because d type flip flop has preferential multiple, set function, present embodiment can make connector J1 pin 3,4 or pin 2,3 short circuits, U by external switch or wire jumper 6BThe fixing output of Q end " 1 " or " 0 ", promptly demoder 0 bit address is fixed as " 1 " or " 0 ", as required only with two transmitters in a contact.Its circuit connecting relation is: R10 one termination U 6BS end, J1 pin 4, R11 one termination U 6BR end, J1 pin 2, the other end ground connection of R10, R11, J1 pin 3 meets VCC.
Fundamental point of the present utility model is time sharing system emission and receive duty, and it has fundamentally solved multimachine interference problem and energy consumption problem, utilizes big space rate and emission could respond with the consistent of receiver address sign indicating number, makes multimachine can work simultaneously and do not interfere with each other.Therefore, every big space rate that utilizes is realized the multiple one digital type real time distance formula safety alarm of receiving, and all belongs to protection domain of the present utility model.

Claims (8)

1, a kind of wireless digital type real time distance formula safety alarm, comprise power supply stabilization circuit, radiating circuit and receiving circuit, radiating circuit comprises address encoding circuit, carrier modulation and emission, receiving circuit comprises that modulated wave receives and demodulation, address decoding circuitry, voice alarm circuit, it is characterized in that establishing scrambler start-up control circuit at radiating circuit, scrambler start-up control circuit is a circuit and square-wave, its output connects the control pin 14 of scrambler, make transmitter by its dutycycle time sharing system work, establish retriggerable one shot multivibrator at receiving circuit, retriggerable one shot multivibrator is a single stabilization delay circuit, its control termination demoder U 5Output pin 17, with U 5The burst pulse broadening of output is the arrival that high level is maintained to next pulse, and the output of single stabilization delay circuit connects audio alert.
2, wireless digital type real time distance formula safety alarm according to claim 1 is characterized in that scrambler start-up control circuit is the circuit and square-wave of a big space rate, comprises phase inverter U 1D, U 1F, U 1E, resistance R 1, R 2, capacitor C 1, diode D 1, its circuit connecting relation is: U 1DPin 8 meets scrambler U 2Control pin 14, U 1DPin 9 meets U 1EPin 10 and C 1An end, C 1Another termination U 1FPin 13 and R 1One end, R 1Another termination D 1Positive pole and R 2One end, R 2The other end and D 1Continuous back of negative pole and U 1EPin 11, U 1F12 join.
3, wireless digital type real time distance formula safety alarm according to claim 1 and 2 is characterized in that described scrambler start-up control circuit has photosensitive control circuit, and photosensitive circuit connects the vibration control end of circuit and square-wave, comprises basic switch S 2One termination positive supply V CC, the other end and photoresistance R λOne end joins, R λOther end connecting resistance R 4An end and phase inverter U 1CPin 5, U 1CPin 6 meets D 2Negative pole, D 2Positive pole meets the vibration control end U of circuit and square-wave 1FPin 13.
4, wireless digital type real time distance formula safety alarm according to claim 1 and 2 is characterized in that establishing demoder 0 bit address at receiving circuit forms circuit, comprises d type flip flop U 6B, resistance R 10, R 11, connector J1, U 6BBe connected into the T trigger, demoder U 5The output pulse of pin 17 is through Q 3Anti-phase, Q 3Collector meets U 6BClock control end CLK pin 11, promptly corresponding U 5The output pulse of pin 17 is per jumped along U down for one 6BThe upset of Q end once.The output that demoder 0 bit address forms circuit meets demoder U 50 bit address end pin A 0
5, wireless digital type real time distance formula safety alarm according to claim 1 and 2 is characterized in that described retriggerable one shot multivibrator comprises monostable circuit U 6A, capacitor C 6, resistance R 8, R 9, R 12, R 13, diode D 5, D 6, D 7, triode Q 3, its circuit connecting relation is: demoder U 5Output pin 17 meet U 6AControl pin 6 and R 8One end, R 8Another termination D 5Positive pole, D 5Negative pole meets Q 3Base stage, Q 3Collector meets R 9One end, D 6Negative pole and U 6BClock control end CLK pin 11, D 6Positive pole meets U 6APin 4, C 6Anodal, D 7Positive pole and R 13One end, D 7Negative pole meets R 13The other end, R 12One end, R 12Another termination U 6APin 1, Q 3Emitter, C 6Minus earth, R 9Another termination V CC, U 6APin 2 is through resistance R 14Meet voice alarm circuit BELL.
6, wireless digital type real time distance formula safety alarm according to claim 4 is characterized in that described demoder 0 bit address forms circuit, can make connector J1 pin 3,4 or pin 2,3 short circuits, U by external switch or wire jumper 6BThe Q fixing output of end " 1 " or " 0 ", promptly demoder 0 bit address is fixed as " 1 " or " 0 ".Its circuit connecting relation is: R10 one termination U 6BS end, J1 pin 4, R11 one termination U 6BR end, J1 pin 2, the other end ground connection of R10, R11, J1 pin 3 meets VCC.
7, wireless digital type real time distance formula safety alarm according to claim 5, the delay time that it is characterized in that retriggerable one shot multivibrator is the cycle of 1～1.5 times circuit and square-wave.
8, wireless digital type real time distance formula safety alarm according to claim 1 and 2, the oscillator dutycycle that it is characterized in that described circuit and square-wave is 85%～95%.
CN 02284181 2002-11-14 2002-11-14 Wireless digital real-time distance measuring safety alarm Expired - Fee Related CN2587027Y (en)

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CN 02284181 CN2587027Y (en) 2002-11-14 2002-11-14 Wireless digital real-time distance measuring safety alarm

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101405616B (en) * 2006-03-24 2013-04-03 罗伯特.博世有限公司 Distance measuring device and method for operating the device
US9162360B2 (en) 2012-11-02 2015-10-20 Industrial Technology Research Institute Proximity sensing method, proximity sensing apparatus and mobile platform using the same
CN108051635A (en) * 2017-10-23 2018-05-18 上海卫星工程研究所 Priming system initial firing current peak detection circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101405616B (en) * 2006-03-24 2013-04-03 罗伯特.博世有限公司 Distance measuring device and method for operating the device
US9162360B2 (en) 2012-11-02 2015-10-20 Industrial Technology Research Institute Proximity sensing method, proximity sensing apparatus and mobile platform using the same
CN108051635A (en) * 2017-10-23 2018-05-18 上海卫星工程研究所 Priming system initial firing current peak detection circuit

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