CN2492899Y

CN2492899Y - Smoke and high temperature alarm for vehicle

Info

Publication number: CN2492899Y
Application number: CN 01246693
Authority: CN
Inventors: 余炎
Original assignee: YAOWEI INDUSTRY Co Ltd SHANGHAI
Current assignee: YAOWEI INDUSTRY Co Ltd SHANGHAI
Priority date: 2001-07-24
Filing date: 2001-07-24
Publication date: 2002-05-22
Anticipated expiration: 2011-07-24

Abstract

The utility model designs an automotive alarm of smoke and high temperature to forecast a possible fire alarm on a public vehicle, so that the safety of passengers can be ensured. A smoke sensor and a temperature sensor are mounted on the upper side of an automotive engine room, and the smoke and temperature information exported by the two sensors is respectively sent to a smoke information processing circuit and a temperature information processing circuit, and after being processed by the information circuits, become smoke and temperature voltage signals; when the two signals exceed preset voltage values, a driving circuit is started to make a relay work, and an alarm signal is sent to a monitoring alarm circuit for sending out alarm. The utility model uses an OR circuit and only uses a set of alarm device. Once the physical quantity of the environmental temperature or smoke is rapidly increased in a short period, the utility model exports an overrun sudden change electric signal to the monitoring alarm circuit for sending out alarm, thus preventing the hidden trouble of a possible fire alarm caused by high temperature of an engine or other reasons and achieving the purpose of protecting the lives and properties of passengers.

Description

Automobile-used smog, high temperature alarm

Technical field

The utility model relates to a kind of automobile-used smog, high temperature alarm, particularly is used on the mass transportation facilities, and temperature in the engine nacelle and smoke condition are carried out Continuous Tracking detection and warning.

Background technology

On the present mass transportation facilities, still there is not a kind of device that is specifically designed to the temperature regime of car tracking and monitoring engine and annex thereof, particularly do not have a kind of monitoring device that both can in time follow the tracks of temperature variations in the engine nacelle, can measure fast and warning device smoke condition in the engine nacelle again.

Summary of the invention

For solving on utility car to contingent fire alarm; forecast ahead of time; guarantee passenger's safety; the utility model designs a kind of automobile-used smog; high temperature alarm; its scheme is: the top side in the motor car engine cabin; one smoke transducer and a temperature sensor are installed; the smog information and the temperature information of two sensors output; deliver to smog information-processing circuit and temperature information treatment circuit respectively; after information circuit is handled; voltage signal for smog and temperature; when two paths of signals surpasses predefined magnitude of voltage; start driving circuit; make relay work; and send alerting signal to monitoring alarm circuit and report to the police; the advantage of this alarm is; only with a cover warning device; except that can setting in advance to monitoring target (as temperature parameter) alert limit numerical value; also can carry out the continuous detecting of real time environment temperature and two physical parameters of smog; and can realize synchronously " or " monitoring alarm of logic; in case the i.e. physical quantity of environment temperature or smog; the two one of all in short-term, produce and increase variation suddenly; just export one transfinite the sudden change electric signal to monitoring alarm circuit report to the police; cause the hidden danger that fire alarm may take place in the cabin thereby play the too high or other reasons of pre-preventing engine Yin Wendu, reach the security purpose of protection passenger lives and properties.

Description of drawings

Accompanying drawing 1 is this practical temperature sensor and smoke transducer and interlock circuit block scheme thereof.

Accompanying drawing 2 is monitoring alarm circuit block schemes.

Accompanying drawing 3 is temperature information handling principle circuit diagrams.

Accompanying drawing 4 is smog information processing basic circuit diagrams.

Accompanying drawing 5 is monitoring alarm basic circuit diagrams.

Accompanying drawing 6 is power supply basic circuit diagrams.

Accompanying drawing 7 is printed board element arrangements figure of temperature information treatment circuit and smog information-processing circuit.

Accompanying drawing 8 is monitoring alarm circuit printed board element arrangements figure.

Accompanying drawing 9 is monitoring alarm shape assumption diagrams.

Accompanying drawing 10 is smoke transducer outer casing construction drawings.

Embodiment

See also accompanying

drawing

1,2, top side in the motor car engine cabin, one smoke transducer and a temperature sensor are installed, and the smog information and the temperature information of two sensors output are delivered to smog information-processing circuit and temperature information treatment circuit respectively, after information circuit is handled, be the voltage signal of smog and temperature, when two paths of signals surpasses predefined magnitude of voltage, start driving circuit, make relay work, and send alerting signal to monitoring alarm circuit and report to the police;

See also accompanying drawing 3, the temperature information treatment circuit, temperature information is delivered to the balance change-over circuit of forming by resistance R 1-R4 by temperature sensor TEMP, integrated circuit U12 amplifies the temperature information of sending here, temperature information after the amplification is a voltage signal, deliver to integrated circuit (IC) 2, IC2 is in addition by presetting potential device WR2 input preset voltage value, IC2 compares this two signal voltage value, when the temperature signal magnitude of voltage surpasses the preset voltage value, export a signal and further amplify for integrated circuit U16, U16 output makes driving circuit N1 work, and relay A34 work is also sent a high level to monitoring alarm circuit;

See also accompanying drawing 4, the smog information-processing circuit, by smoke transducer GS109 the smog information translation is become voltage, deliver to integrated circuit (IC) 0, voltage signal that 0 pair of smoke transducer of integrated circuit (IC) is sent here and the preset voltage of sending here through potentiometer WR3 compare, when the voltage signal of sending here when smoke transducer surpasses the preset voltage value, after RC filtering, start N2 work, and make relay A35 work, the output high level is to monitoring alarm circuit.

See also accompanying drawing 5, monitoring alarm circuit constitutes OR circuit by diode D5, D6, R3, R4, triode A1, buzzer FMQ constitute warning circuit, light emitting diode D7, D8 constitute the indication of reporting to the police, after IN1 (temperature signal) or IN2 (smoke signal) send OR circuit, arbitrary signal all will make OR-gate output trigger pip, start triode A1 work, and the buzzer FMQ of its collector just sends sharp-pointed calling and reports to the police.

See also accompanying drawing 6, feed circuit after L1C1, R1C2 filtering, are alternating current through integrated circuit (IC) 1 inversion by power supply on vehicle 12V, alternating current are converted to the direct current of 5V again, deliver to each interlock circuit work through L2E2, R2 filtering again.

See also accompanying drawing 10, the smoke detection sensor probe has in the dome housing of protrusion in the middle of being positioned over one, and housing is made and insulted the shape structure, around the dome body tilted slotted hole is arranged, and is convenient to smog and enters, and is arranged at the top side of engine compartment.

See also accompanying drawing 9, circuit elements device, circuit printing plate, power supplies etc. are installed in the box body, and the warning indication and the power supply indication of temperature, smog are arranged on the box body, and this box body is positioned in the pilothouse.

Claims

1, a kind of automobile-used smog, high temperature alarm, it is characterized in that: top side in the motor car engine cabin, one smoke transducer and a temperature sensor are installed, the smog information and the temperature information of two sensors output, deliver to smog information-processing circuit and temperature information treatment circuit respectively, after information circuit is handled, voltage signal for smog and temperature, when two paths of signals surpasses predefined magnitude of voltage, start driving circuit, make relay work, and send alerting signal to monitoring alarm circuit and report to the police.

2, by the described automobile-used smog of claim 1, high temperature alarm, it is characterized in that: the temperature information treatment circuit, the temperature information of the balance change-over circuit of being made up of resistance R 1-R4 being sent here by integrated circuit U12 amplifies, temperature information after the amplification is a voltage signal, deliver to integrated circuit (IC) 2, IC2 is in addition by presetting potential device WR2 input preset voltage value, IC2 compares this two signal voltage value, when the temperature signal magnitude of voltage surpasses the preset voltage value, export a signal and further amplify for integrated circuit U16, U16 output makes driving circuit N1 work, and electrical equipment A34 work is also sent a high level to monitoring alarm circuit.

3, by the described automobile-used smog of claim 1, high temperature alarm, it is characterized in that: voltage signal that the smog information-processing circuit is sent here by 0 pair of smoke transducer of integrated circuit (IC) and the preset voltage of sending here through potentiometer WR3 compare, when the voltage signal of sending here when smoke transducer surpasses the preset voltage value, after RC filtering, start N2 work, and make relay A35 work, the output high level is to monitoring alarm circuit.

4, by the described automobile-used smog of claim 1, high temperature alarm, it is characterized in that: monitoring alarm circuit constitutes OR circuit by diode D5, D6, R3, R4, and triode A1, buzzer FMQ constitute warning circuit, and light emitting diode D7, D8 constitute the indication of reporting to the police.

5, by the described automobile-used smog of claim 1, high temperature alarm, it is characterized in that: feed circuit after LC, RC filtering, are alternating current through integrated circuit (IC) 1 inversion by power supply on vehicle 12V, alternating current are converted to the direct current of 5V again, again through LC, RC filtering.

6, by the described automobile-used smog of claim 1, high temperature alarm, it is characterized in that: the smoke detection sensor is positioned in the housing, and housing is made and insulted the shape structure, and there is the dome of protrusion the centre, around the dome tilted slotted hole is arranged, and is arranged at the top side of engine compartment.