CN2223509Y

CN2223509Y - Safety monitoring apparatus

Info

Publication number: CN2223509Y
Application number: CN 94217424
Authority: CN
Inventors: 孙志林; 徐林生
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-22
Filing date: 1994-07-22
Publication date: 1996-03-27
Anticipated expiration: 2004-07-22

Abstract

The utility model relates to a safety monitoring device for preventing accidents and monitoring, composed of a transmission part and a receiving part. The transmission and receiving adopt dual frequency carrier transmission form. The transmission part is composed of a shell body and a transmission circuit. The receiving part is composed of the shell body and a receiving circuit. The transmission circuit is composed of an infrared sensor, a buffering amplifying circuit, a comparative circuit, a time delay control circuit, a dual frequency carrier wave transmission circuit, a shock resistance circuit, an automatic power transmission circuit, a voltage stabilization circuit, and a power part. The receiving circuit is composed of a series connection resonance circuit, a parallel connection resonance circuit and an alarm circuit. The utility model has the advantages of stable performance, safe use, low value, long lifetime, and multiple functions.

Description

Safety monitoring device

The utility model relates to prevent in departments such as industry, finance, commerce, hotels a kind of multifunctional safety monitoring device of accident and supervision usefulness.

Safety problem is the problem that each enterprises and institutions extremely is concerned about, it is of common occurrence bringing about great losses for country and unit etc. because of various accidents.For this reason, people have taked many safety practices, one of them is exactly in the relevant place (place) of relevant department monitor to be installed, equipment as video camera one class, also have alarm etc., but these equipment has plenty of the supervision weak effect, have plenty of too expensive, being easy to of also having is out of order the uneven congruence of function etc.Therefore, how developing a kind of new safety monitoring device is the task certainly that is situated between that remains.

The purpose of this utility model is exactly to provide a kind of result of use good multifunctional safety monitoring device to the public.

The purpose of this utility model is achieved like this, utilize the version of existing electronic device, outside casing, adorn each control assembly, each control assembly is with the close combination of the control circuit in the casing, control circuit is made up of two parts, i.e. sending part parallel circuit and receiving unit circuit, and two parts circuit is loaded in the two housings with separate form, two parts are connected by transferring line, and adopt the double frequency carrier wave to send form.

The utility model stable performance, safe and reliable, be not subject to the interference of external electromagnetic ripple, price is low, the life-span is long, function is many, is easy to apply obvious social benefit.

Below in conjunction with accompanying drawing structure of the present utility model is elaborated.

Fig. 1 is a surface structure synoptic diagram of the present utility model.

Fig. 2 is sending part parallel circuit figure.

Fig. 3 is the receiving unit circuit diagram.

By Fig. 1, Fig. 2, shown in Figure 3, the utility model is made up of transmission housing 2, reception housing 11 and sending part parallel circuit, receiving unit circuit, the sending part parallel circuit is contained in and sends in the housing 2, the receiving unit circuit is contained in and receives in the housing 11, and two parts are connected as a single entity by A, A ' end through transmission line 10.

Send part: the front face that sends housing 2 is equipped with functional switch 3, power switch 4, volume control 5, AC power index 6, direct supply indication 7, monitoring output indication 8, report to the police and indicate 9, there is handle 1 the housing both sides, by infrared sensor, buffering is amplified, comparator circuit, delay control circuit, double frequency carrier wave transtation mission circuit, shockproof circuit, automatically send circuit, the transtation mission circuit that mu balanced circuit and power supply are formed is contained in and sends in the housing 2, by shown in Figure 2, infrared sensor IC1 (adopting P228), form by pyroelectric infrared sensor and Fresnel Lenses, its function is in the zone of lens monitoring, the pyroelectric infrared low frequency signal of a low-grade fever that converts to that moving of human body produced is (between the signal frequency 0.3-10HZ, signal amplitude is about 1mv), by the 2 ends output of IC1; Buffer amplifier circuit is by resistance R 3, R4, R5, the a level of capacitor C 1, C2, C3 and amplifier integrated circuit (IC) 2 (adopting LM324N1/4) is formed positive proportional integral buffer amplifier circuit, J1 type High frequency filter and electric capacity high-frequency filter circuit via resistance R 1, R2, capacitor C 1, C2 composition, the elimination higher hamonic wave, make signal enter buffering and amplify, be coupled to comparator circuit by resistance R 6, capacitor C 5 again; Comparator circuit is by resistance R 7, R8, R9, R10, R11, the b of integrated circuit (IC) 2, c, the d level, diode D1, D2 forms, the c level of IC2, the d level is formed the voltage window comparer, as signal when 12 ends of IC2 exist, no matter signal is positive half cycle, still negative half period when signal output is arranged (be a level 1 pin), switching diode D1, D2 two negative terminals always have a high level output, when 12 end no signals, the b level does not have the amplifying signal input, 14 pin of b level are then exported a stable window voltage, diode D1, the D2 output terminal is a low level always, as diode D1, when there is high level in the D2 output terminal, arrive delay control circuit through resistance R 12; Delay control circuit is by resistance R 13, R14, R15, R16, R17, R18, R19, R20, R21, R31, capacitor C 6, C7, amplifier integrated circuit block IC3 (adopting LM324N), triode T1, T2, T3, T6, LED is formed, K switch 1-1 connect working power ( ), behind the power connection, capacitor C 7 is by resistance R 16 chargings, and at this moment, 5 ends of double operational IC3 are high level, so 7 ends output high level, triode T2, T3 saturation conduction, LED 1 luminous indication, forces signal can't enter 3 pin of IC3 at the grounded emitter of triode T3, and 1 pin is a low level, and controlled part can not be worked; Capacitor C 7, resistance R 16 chargings finish, and 5 pin of IC3 become low level, so 7 pin of IC3 are low level, triode T2, T3 end, LED 1 breath goes out, and fluorescent lifetime is about 1 minute, and the sending part branch is in wait state, when 3 pin of IC3 have the high level input, capacitor C 6 chargings, and 1 pin of IC3 output high level make triode T1 saturation conduction, and the complete saturation conduction of control triode T6 electronic switch, make double frequency carrier wave transtation mission circuit send carrier signal; When 3 pin of IC3 do not have the high level signal input, capacitor C 6 discharges, 3 pin of IC3 continue to keep high level, keep the 1 pin high level output of IC3, make triode T6 still be in the saturation conduction state, approximately keep turn-offing about 1 minute, during this period, when having the continuous trigger signal as 3 pin of IC3, triode T1, T6 will keep the conducting duty; Double frequency carrier wave transtation mission circuit is made up of two parts, a part is by integrated circuit (IC) 7, triode T7, T8, inductive coupling I.F.T. B2 forms, integrated circuit (IC) 7 (adopting LM566), resistance R W1, R37, R38, R39, capacitor C 23, C24 component frequency generation circuit, by adjusting adjustable resistance RW1, resistance R 37, capacitor C 23, can change the output of oscillation frequency, when triode T6 saturation conduction, frequency generating circuit is started working, stable 110KHZ square-wave signal of 3 pin output by integrated circuit (IC) 7, through capacitor C 22, resistance R 35 is coupled to triode T8 promotion triode T7 finishes power amplification output, resistance R 32, R33 is the pull-up resistor of triode T8, resistance R 32, R33, triode T8 forms the quiescent point biasing circuit of triode T7, like this, the collector of triode T7, form an oscillatory circuit (being parallel resonance) between the coil of capacitor C 21 and transformer B2, be inductively coupled to secondary through I.F.T. B2, through coil L, after capacitor C 20 series resonances, output frequency-selecting with coil L1, the oscillation frequency signal of 110KHZ is sent on the line of electric force, be on the former sideline road of power transformer B1, realize that power line carrier transmits the purpose of signal.Capacitor C 20 is high pressure resistant isolation capacitance, and resistance R 34 is a dropping resistor; Another part is to be made of integrated circuit (IC) 8 (adopting LM566), triode T9, T10 and transformer B3, its working condition and aforementioned basic identical, institute's difference be the oscillation frequency of this oscillatory circuit be 30KHZ, rather than 110KHZ, deliver to the transmission signals that 110KHz, two oscillation frequency of 30KHz are just arranged on the line of electric force of the former limit of power transformer B1 like this, promptly the double frequency carrier wave sends.

Shockproof circuit is by vibroswitch Z1, resistance R 30, electric capacity 30, integrated circuit (IC) 5 (adopting LM3581/2), LED 2, triode T5 and relay J 2 are formed, when sending, be collided when destroying, can send alerting signal automatically, resistance R 28, R29 is 13 terminal potentials that IC5 is set, vibroswitch Z1 conducting when sending part divides the generation vibrations, capacitor C 30 chargings, 12 ends of IC5 become noble potential, so 14 ends of output IC5 also become high level by low transition, LED 2 is luminous, triode T5 saturation conduction, relay J 2 adhesives, normal opened contact J2-1 connects, double frequency carrier wave transtation mission circuit gets the electric carrier signal that sends out, when shockproof generation, approximately after 1 minute, capacitor C 30 chargings finish, 12 ends of IC5 become low electric screen, and then 14 ends also are low level, and triode T5 carries and ends, relay J 2 discharges, normal opened contact J2-1 disconnects, and carrier-less signal sends, and the big I self-control of vibroswitch Z1 sensitivity is fixed, capacitor C 14 is provided with the adhesive ability that strengthens triode J2, and has delay function; Operation source by power transformer B1 (

) secondary obtains (RD is a fuse), through bridge-type (D3-6) rectification, capacitor C 9 filtering, after obtaining a voltage stabilizing and be 15 volts direct current by output 3 ends of regulator block C6 (adopt LM7815) again, partly provide operating voltage to double frequency carrier wave transtation mission circuit, capacitor C 9, C10, C13 are the filtering electrical equipment of regulator block IC6.15 volts of direct supplys pass through the effect of 3 end voltage stabilizers of integrated circuit (IC) 4 (adopting LM7809), come maintaining heat to discharge the operating voltage of infrared sensor, buffering amplification, comparator circuit, delay control circuit by 3 ends 12 volts of stable DC voltage of output (wherein capacitor C 17, C18, C16, C19 are filter capacitor); Automatically send circuit to constitute by ganged switch K1-1, K1-2, resistance R 25, diode D8, after ganged switch closes, charge from trend accumulator Ee by resistance R 25, when power supply is cut off, accumulator Ee keeps transtation mission circuit work by diode D8 power supply.Electrical equipment C8 is a filter capacitor, and resistance R 22 is a dropping resistor.

Receiving unit: sensor 12, monitoring output indication 13 are housed on the front face of reception housing 11, delay time and indicate 14, the receiving unit circuit of being made up of series, parallel resonant circuit and warning circuit is contained in and receives in the housing 11, and is connected with the sending part parallel circuit by transmission line 10 and is one.

By shown in Figure 3, series resonant circuit is by capacitor C 9, telefault L1, the former limit of transformer B2 is formed, the parallel resonance amplifying circuit is by triode T1, the former limit telefault of capacitor C 12 and transformer B4 is formed, warning circuit is by integrated circuit (piece) IC12 (employing musical film), IC13 (adopting TDA724OAP), LED 3, loudspeaker Y forms, its wiring working condition is, when double frequency carrier wave receiving circuit receives the 110KHZ that sends here from the sending part branch and the signal of 30KHZ from power line, go to finish by circuit two parts respectively, at first the 110KHZ signal demand is by capacitor C 9, the series resonant circuit that the former limit of telefault L1 and transformer B2 is formed carries out frequency-selecting, and the 110KHZ that selects and recommends is sent in the parallel oscillatory circuit that secondary and capacitor C 10 form by the voltage magnetic coupling produces vibration, selected resonance frequency is transported to triode T1 through coupling capacitance C11 and advances frequently to amplify, triode T1 is in resistance R 10, the bias voltage that R11 is provided with work down, signal is added to the base stage of triode T1 through sensitivity levelling resistance R 12, connect the effect that resistance R 13 on the emitter of triode T1 plays stable oscillation stationary vibration, capacitor C 13 is bypass condensers, with resistance R 13 parallel connections, play the logical interchange of stopping direct current.After triode T1 frequency-selecting is amplified, its centre frequency 110KHZ is through the inductance magnetic coupling of the transformer B4 secondary to transformer B4, and the base stage of promotion triode T2, make triode T2 conducting drive the light-operated integrated switch of IC9, at this moment, 5, the 4 also conductings of end of IC9 (adopt ICP631), supply voltage by and 5 ends of another light-operated integrated switch IC10 that pressurizes (adopting ICP631); Moreover, in like manner, when transformer B3 receives the resonance frequency of 30KHZ, the same with aforementioned circuit work, make 5 of integrated switch IC10 at last, the also conducting of 4 two ends, supply voltage is added on the base stage of triode T5 by resistance R 3 step-downs, make triode T5 saturation conduction, relay J 1 quick pick-up, make the closed conducting of normal opened contact J1-1, the various device that drives peripheral hardware send electricity work, as electric bell, video camera etc., diode D6 plays discharge process, simultaneously, LED 2 conductings are luminous, resistance R 4 plays the step-down effect, relay J 2 is adhesive simultaneously also, normal opened contact J2-1 closure, supply voltage is added on the sound light alarming circuit, and LED 3 is luminous, 2 of musical film ic chip 12,3 ends connect, output audio signal continuously, 5,4 ends add resistance R5 can adjust output signal (main tone), and resistance R 6 plays the step-down effect, make it to obtain the operating voltage of about 3V, music signal is by the output of 6 ends of IC12, is coupled to 1 end of sound signal power discharging integrated block IC13 through capacitor C 4 and resistance R 7, behind power discharging IC 13, export from 12 ends, be coupled on the loudspeaker Y by capacitor C 7, send out and divide sound, by resistance R 9 step-downs, make LED 3 luminous, thereby realize sound and light alarm.Wherein capacitor C 6, C5, C23, resistance R 8 is to put that integrated package is finished power amplifier and the auxiliary capacitor and the resistance that are provided with, and its big or small change can change the tone of audio frequency output etc.; K switch 2-1 is the monitoring function selector switch, when signal is arranged, after closing, can ceaselessly drive watch-dog continuously, after disconnecting during no signal, closes supervising device in about 1 minute automatically; Power supply is exchanged by 220V and obtains operating voltage through transformer B1 transformation, through electric bridge D1-4 rectification, capacitor C 1, C2 filtering obtain 12 volts of direct currents, power supply as circuit working, when closing ganged switch K1-1, K1-2, LED 1 shows 12 volts of voltages connections of direct current by luminous indication after resistance R 2 step-downs; Battery EC is by resistance R 1 charging, and after power supply was cut off, battery EC kept receiving unit work by diode D5 automatic power.IC11 is the LM7809 voltage stabilizer, when 12 volts of DC voltage are added in IC11 and import 1 end, export 9 volts of DC voltage-stabilizing electricity of 3 ends output and keep the work of double frequency carrier wave receiving circuit, capacitor C 15, C16 are high-frequency filter capacitors, and capacitor C 14, C17 are filter capacitors, and capacitor C 9, C18 are high pressure resistant isolation capacitance, be again resonant capacitance,, be directly connected to the frequency-selecting requirement of resonant circuit with the electric capacity size of capacitor C 19, C10, C12, C21, otherwise, can have influence on passing through of centre frequency.

As seen from the above, the utility model amount adopt the bifrequency power line carrier transmit with Receive signal, improved widely antijamming capability, strengthened the reliability of work; Shockproof from Moving control strengthened the preventing ability of equipment; Have power failure and automatically send Electricity Functional, assurance device Safe and effective use, automatic sound-light alarm is listened to obtain visible respond wellly, this practicality newly Applying of type must be for safety guard plays good action, produce significant social effect and Huge economic worth.

Claims

1. safety monitoring device that constitutes by housing and circuit, it is characterized in that the front face that sends housing (2) is equipped with functional switch (3), power switch (4), volume control (5), AC power indication (6), direct supply indication (7), monitoring output indication (8), the indication (9) of reporting to the police, there is handle (1) both sides, by infrared sensor, buffering amplify, relatively, time-delay control, double frequency carrier wave sends, sending part parallel circuit shockproof, that send electricity, voltage stabilizing and several circuit of power supply to form automatically is contained in the transmission housing (2); Sensor (12), monitoring output indication (13) are housed on the front face of reception housing (11), delay time and indicate (14), the double frequency receiving unit circuit of being made up of series, parallel resonant circuit and warning circuit is contained in and receives in the housing (11), and is connected with the sending part parallel circuit by transmission line (10) and is one.

2, safety monitoring device according to claim 1, it is characterized in that infrared sensor IC1 is made up of pyroelectric infrared sensor and Fresnel Lenses in the said sending part parallel circuit, it is by resistance R 3 that buffering is amplified, R4, R5, capacitor C 1, C2, the a level of C3 and integrated circuit (IC) 2 is formed, via resistance R 1, R2, capacitor C 1, J1 type High frequency filter and electric capacity high-frequency filter circuit that C2 forms make signal enter buffer amplifier circuit, again by resistance R 6, capacitor C 5 is coupled to comparator circuit, comparator circuit by resistance R 7 to R11, the b of integrated circuit (IC) 2, c, the d level, diode D1, D2 forms, the c level of IC2, the d level is formed the voltage window comparer; Delay control circuit is made of resistance R 13 to R21, R31, capacitor C 6, C7, amplifier integrated (piece) IC3, triode T1, T2, T3, T6, LED 1; Shockproof circuit is made up of vibroswitch Z1, resistance R 30, capacitor C 30, integrated circuit (IC) 5, LED 2, triode T5 and relay J 2; Automatically send circuit to receive ganged switch K1-1, K1-2, resistance R 25, diode D8 formation.

3, safety monitoring device according to claim 1 and 2, it is characterized in that the double frequency carrier wave transtation mission circuit in the said sending part parallel circuit is made up of two parts, a part is by integrated circuit (IC) 7, triode T7, T8, transformer B2 forms, integrated circuit (IC) 7, resistance R W, R37, R38, R39, capacitor C 23, C24 component frequency generation circuit, the 3 pin output square-wave signal of IC7, through capacitor C 22, resistance R 35 is coupled to triode T8 promotion triode T7 finishes power amplification output, resistance R 32, R33, triode T8 forms the quiescent point biasing circuit of triode T7, the collector of triode T7, form antiresonant circuit between the coil of capacitor C 21 and transformer B2, B2 is inductively coupled to secondary through transformer, coils L, after capacitor C 20 series resonances and the output frequency-selecting of coil L1, signal is sent on the former sideline road of transformer B1; Another part is to be made of integrated circuit (IC) 8, triode T9, T10 and transformer B3.

4, safety monitoring device according to claim 1, it is characterized in that the series, parallel resonant circuit in the said receiving unit circuit is, series resonant circuit is made up of the former limit of capacitor C 9, telefault L1, transformer B2, and the parallel resonance amplifying circuit is made up of the former limit telefault of triode T1, capacitor C 12 and transformer B4; Warning circuit is made up of integrated circuit (IC) 12, IC13, LED 3, loudspeaker Y.