CN1204104A - Fire-proof safety alarm system for passenger train - Google Patents

Abstract

The fire-proof safety alarm system for passenger train is characterized by that a safety alarm formed from micro-processing control system circuit consisting of alarm press-button control circuit indicator light circuit, 8031 chip microprocessor, 74Ls373 latch and EPROM2716 program memory, filter coupling circuit and shell body is mounted on the wall of conductor's cubicle of every carriage. The alarm signal of every carriage is analyzed and processed by micro-processing control system, passed through audible circuit, broadcast line and modulation/demodulation circuit, and transmitted to all conductors of all carriages so that it can timely and accurately eliminate fire, banditry and other hidden peril, etc..

Description

Fire-proof safety alarm system for passenger train

The invention belongs to the control system that is used to send signal and received signal on the train, a kind of passenger train fire safety system.

Railway passenger train is because of organizing into groups length, and range ability is far away, the speed height, and part train running section public security condition is relatively poor.Breaking out of fire the condition of a disaster on train is found that the robber waits the disorder in public order incident, or because of the passenger vehicle bearing fault causes axle temperature annunciator situations such as warning is taken place.At present, when above-mentioned fault occurring, can only lean on artificial transmission information mutually, particularly under train overcrowding's situation, just be not easy fast, accurately promptly transmit information thereby often cause the state of affairs to enlarge serious threat train and passenger safety, so that the passenger vehicle accident takes place, causes the national heavy losses of property.

The objective of the invention is to design a kind of fire-proof safety alarm system for passenger train,, find that robber waits the disorder in public order incident when breaking out of fire young plant ON TRAINS, or when causing that because of bearing fault axle temperature changes, realize in time reporting to the police, so that in time take measures, remove a hidden danger, guarantee passenger train safety.

For achieving the above object, the present invention adopts following technical scheme:

Described fire safety warning system is provided with by the warning key control circuit in the compartment of passenger train attendant room, indicator light circuit, little Treatment Analysis circuit that 8031 single-chip microcomputers, latch 74LS373 and program storage EPROM2716 form, acoustics circuit, the filtering coupled circuit, modulation-demodulation circuit is the safety alarm formed such as external shell in addition, each alarm is together in parallel by broadcast wire, alerting signal from key control circuit is transferred to microprocessing systems by 8155 interface circuits, give acoustics circuit through modulator-demodular unit, digital display circuit.

Described warning system have fire alarm button S3 by the key control warning circuit, robber and police warning button S4, bearing temperature alarm button S2, self-checking function button S5, compositions such as reset function button S6, give microprocessing systems 8031 charactron light emitting diode indicators through 8155 interface circuits and show above-mentioned corresponding each signal, microprocessing systems carries out timing scan to uni-directional push-button switch and charactron.

The acoustics circuit of described warning system, form robber and police, fire alarm audible alarm circuit by D1, V4, D9, alerting signal is through micro treatment control system and separate the system demodulator circuit, send to each compartment attendant room of train by broadcast wire, the laggard capable pilot lamp of signal received by the alarm in each compartment and display shows, sends alarm sound simultaneously.

The acoustics circuit of described warning system also comprises the bearing temperature alarm circuit of being made up of three or five oscillatory circuits, P1.7 and modulation-demodulation circuit by micro treatment control system send to each compartment attendant room of train through broadcast wire, and the alarm in each compartment receives the report for police service and carries out pilot lamp behind the signal and display shows.

The filtering coupled circuit and the modulation-demodulation circuit of described warning system are made up of T1, T2, T3, V10, V11, V12; C25, C26, C27, T1, V10, V11 form transmission filtering coupled circuit, and T1, C25-C27 filter the broadcast singal on the broadcast wire and do not allow it enter alarm; T2, T3, V12 form the received signal circuit, and wherein C33, C34, C29, T2 play the isolation coupling effect, and broadcast singal is filtered, and V12, T2 form one-level amplification filtering circuit, and input signal is carried out filtering again.

The modulation-demodulation circuit of described warning system is made up of D14, D15, V7, V8, and D4 will send signal and become fsk signal and transmit, and D15, V7, V8 carry out demodulation with the fsk signal that receives, and become digital signal, give little reason device and handle.

Software in the EPROM2716 slice of described warning system includes master routine, the keyboard display routine, and alert program is pulled out the bit switch handling procedure, the instrumental function self-check program, and be added with the Software Anti-interference circuit.

The present invention has following superiority.

In every joint compartment, all installed the fire safety alarm as mentioned above and formed warning system owing to adopt by the broadcasting for train line parallel, each alarm can be as main frame, also can be as slave, under the normal condition, alarm is in and receives information state when a certain compartment generation the condition of a disaster (fire, robber and police, bearing temperature alarm) time, alarm with the corresponding the condition of a disaster information in compartment, own place and the numbering in the train of place, compartment, mails to the alarm in each compartment by broadcast wire under manual intervention.Each alarm is received the laggard row identification of signal and is handled; and send corresponding sound and light alarm; each compartment is received the turner of information rank rear and is done personnel and can make a response in the shortest time; the scene of the accident arrives in the very nick of time; generation to the accident state of affairs; effectively control is implemented in development, thereby protection country and people's lives and properties are reduced the loss.

Below in conjunction with the description of drawings specific embodiments of the invention:

Accompanying drawing is the fire-proof safety alarm system for passenger train electrical block diagram.

Fire-proof safety alarm system for passenger train is composed in parallel by existing two broadcast wires of train by the alarm that is arranged on each compartment.Working power adopts train 48V direct supply, and it is installed on the wall of compartment attendant room.8031 singlechip chips in the fire safety alarm after the analyzing and processing, are given acoustics circuit as the signal of control system reception from each compartment warning key circuit, send the corresponding robber and police sound, the fire alarm sound or axle temperature audible alarm; And be transferred to light emitting diode display circuit, and realize the flicker of reddish yellow pilot lamp, charactron shows the compartment number.

Single-chip microcomputer 8031 systems are made up of D1, D2, D3, and 8031 single chip microcomputers are used for judging the transmission and the reception of signal, and D2 is a latch, and it is program storage that 8031 addresses, data line are separated D3, and 8031 working routine is stored in this chip; Show by strong circuit, form by D4,7407,75452 charactrons and uni-directional push-button switch, D4 is the interface microcontroller circuit, and single-chip microcomputer carries out timing scan by D4 to uni-directional push-button switch and demonstration charactron, when button is operated, single-chip microcomputer is at first received just in the operating key position, according to the position of operating key, make corresponding processing, promptly send various the condition of a disaster signals, and this machine is reported to the police simultaneously, or carries out self-check program; Want data presented to deliver in the charactron, because of the certain electric current of the luminous needs of charactron is added with segment driver 7407 and line driver 75452 by 8155; Pull out the bit switch circuit, pull out the bit switch circuit and directly be connected on 8031 P1.0-p1.4 mouth, 8031 states of reading the P1.0-P1.4 mouth in the machine start or when resetting, the address of promptly pulling out bit switch, and memory is in memory, so that use when sending or receive data; Acoustics circuit is made up of four tones of standard Chinese pronunciation musical film 9561 and three or five oscillatory circuits.9561 send the fire alarm and the robber and police sound, and three or five oscillatory circuits send the bearing temperature alarm sound.Whether entire circuit controls sounding by 8031 interface P1.5-P1.7, and P1.5 controls fire alarm, and P1.6 controls robber and police, and P1.7 controls bearing temperature alarm; Indicator light circuit, this circuit is directly controlled by 8031 P3.4, P3.5 mouth; The filtering coupled circuit is made up of T1, T2, T3 and V10, V11, V12, and C25, C26, C27, T1, V10 and V11 form transmission filtering coupled circuit; The effect of T1, C25-C27 is with broadcast singal on the broadcast wire and alarm Signal Spacing, does not allow it enter alarm and only allows alerting signal deliver on the broadcast wire, and T2, T3, V12 form the received signal circuit; Wherein C33, C34, C29, T2 play the isolation coupling effect; V12 and T2 form one-level amplification filtering circuit, and further filtering is amplified to the signal that enters alarm, to satisfy the requirement of detuner; Modulation-demodulation circuit is made up of the LM567 phaselocked loop, is operated in transmission or accepting state by relay K 1 decision alarm under 8031 controls.In transmit status, the signal that send amplifies by modulator, and is coupled on the broadcast wire by T1; When in accepting state, the signal that T2 is coupled into enters detuner and carries out demodulation, and the digital signal after the demodulation directly enters single-chip microcomputer and handles.

Claims (7)

1, a kind of fire-proof safety alarm system for passenger train, feature of the present invention is: described fire safety warning system is provided with by the warning key control circuit in the compartment of passenger train attendant room, indicator light circuit, 8031 single-chip microcomputers, little processing controls analysis circuit that latch 74Ls373 and program storage EPROM2716 form, acoustics circuit filtering coupled circuit, modulation-demodulation circuit is the safety alarm formed such as housing in addition, each alarm is together in parallel by broadcast wire, alerting signal from key control circuit is transferred to microprocessing systems by 8155 interface circuits, gives acoustics circuit through modem circuit.

2, fire safety warning system as claimed in claim 1, it is characterized in that: described warning system have fire alarm button S3 by the key control warning circuit, robber and police alarm keys S4, bearing temperature alarm button S2, self-checking function button S5, compositions such as reset function button S6 are given 8031 microprocessing systems through 8155 interface circuits, show above-mentioned corresponding each signal by charactron, luminous second tube sheet, microprocessing systems carries out timing scan to the uni-directional push-button switch charactron.

3, fire safety warning system as claimed in claim 1, it is characterized in that: the acoustics circuit of described warning system, form robber and police by D1, V4, D9, the fire alarm audible alarm circuit, signal is through micro treatment control system and separate the system demodulator circuit, send to each compartment attendant room of train by broadcast wire, the laggard capable pilot lamp of signal received by the alarm in each compartment and display shows, sends alarm sound simultaneously.

4, fire safety warning system as claimed in claim 1, it is characterized in that: the acoustics circuit of described warning system also comprises the bearing temperature alarm circuit of being made up of three or five oscillatory circuits, the pilot lamp and the display that send to each compartment attendant room of train through broadcast wire by the P1.7 and the modulation-demodulation circuit of micro treatment control system.

5, fire safety warning system as claimed in claim 1 is characterized in that: the filtering coupled circuit of described warning system, and T1, T2, T3V10, V11, V12 form; C25, C26, C27, T1, V10, V11 form transmission filtering coupled circuit T1, C25-C27 the broadcast singal on the broadcast wire are filtered, and do not allow it enter alarm; T2, T3, V12 form the received signal circuit, and wherein C33, C34, C29, T2 play the isolation coupling effect, and broadcast singal is filtered, and V12, T2 form one-level amplification filtering circuit, and input signal is carried out filtering again.

6, fire safety warning system as claimed in claim 1, it is characterized in that: the modulation-demodulation circuit of described warning system, form by D14, D15, V7, V8, D4 will send signal and become fsk signal and transmit, D15, V7, V8 carry out demodulation with the fsk signal that receives, become digital signal, give microprocessor and handle.

7, fire safety warning system as claimed in claim 1 is characterized in that: have software systems in the EPROM2716 slice, mainly comprise master routine, the keyboard display routine, alert program, DIP switch process program, the instrumental function self-check program, and be added with the Software Anti-interference circuit.