CN201031712Y - Goaf rock sound automatic alarm instrument - Google Patents

Abstract

A goaf rock-sound automatic alarm is used to make pre-warning and prediction before large-area collapse in goaf, including an alarm panel. The alarm circuit includes a power circuit, a CPU, a data storage IC2, a buzz circuit, a signal display circuit, a relay isolation circuit and a sound pick-up. In the power circuit, 220V AC power supply is decompressed, rectified and filtered so as to produce DC pressure for supplying power to the buzz circuit and the signal display circuit; simultaneously DC pressure is produced through a stabilizing integrated circuit for CPU; the AC power supply is connected with the sound pick-up for supplying power to the sound pick-up; a plurality of sound pick-ups are arranged according to monitoring points, the rock-sound signal picked up by the sound pick-up is sent to the relay isolation circuit so as to control the on and off of a corresponding isolated relay and sent the signal to CPU; after internal processing, the CPU sends the signal to the data storage IC2 for data storage in series mode; meanwhile, high potential is output to drive the buzz circuit and a buzzer alarms while another high potential is output to the signal display circuit for displaying location, frequency and intensity of the rock sound.

Description

Goaf rock sound automatic alarming instrument

Technical field

The utility model relates to a kind of mine worked-out section ground and presses the variation autoalarm, relates in particular to a kind of goaf rock sound automatic alarming instrument.

Background technology

The great potential safety hazard in mountain, unexpected inbreak right and wrong colliery in large tracts of land goaf, it is the safety problem that administrative departments at different levels and enterprise pay close attention to the most all the time, how to accomplish before big inbreak, to carry out early warning, forecast, withdrawing personnel and equipment so that adopt various measures, is the problem paid close attention to the most of each mine engineering technician for many years.In a single day this device is applied at non-coal mine, will improve the mine safety degree greatly, and the major safety risks that make this people of goaf see that the people is afraid of have been accomplished to prevent controlled, thereby reduces the generation of security incident.

Press context of detection on ground, existing application product is just pressed over the ground to change and is carried out digital record, and to when how early warning before inbreak and the inbreak of goaf, does not still have shaped article.One of potential safety hazard of mountain, large tracts of land inbreak right and wrong colliery, goaf maximum very easily causes the group to hinder the particularly serious serious accident that the group dies.

Summary of the invention

The heavy casualties serious accident of the utility model for effectively avoiding goaf large tracts of land inbreak to be taken place, accomplish the early-warning and predicting before accident takes place, for the safe escape of personnel and property gains time, the utility model is at the weak point of existing equipment, adopt the rock acoustic emission phenomenon of collecting the preceding generation of erecting dense individual props to report to the police, invented goaf rock sound automatic alarming instrument.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of goaf rock sound automatic alarming instrument comprises: the alarm panel is characterized in that: the circuit of alarm comprises: power circuit, central processor CPU, data storage IC2, buzz circuit, signal display circuit, relay buffer circuit, sound pick-up; In the power circuit, the 220V AC power is through step-down, and rectifying and wave-filtering produces DC voltage, use for buzz circuit and signal display circuit, produce DC voltage through integrated regulator simultaneously and use for central processor CPU, AC power is connected to sound pick-up, for sound pick-up provides power supply; Sound pick-up is set to a plurality of according to test point, the rock noise signal of microphone pickup is sent in the relay buffer circuit, and the disconnecting relay adhesive that control is corresponding is sent signal into central processor CPU; Central processor CPU one the tunnel send data storage IC2 to preserve data in the mode of serial ports after inter-process, and export high potential simultaneously and promote buzz circuit, buzzer warning, another road number of writing to display circuit shows rock noise generation address, number of times, intensity.

The utility model is on the basis of more than ten years artificially pressure observation, develops with pressing the record rule practically by theoretical research.The sound that a series of rock failure mechanism of rock produced such as ore pillar pressure break, wall caving, roof break before the large tracts of land inbreak, it is unusual one of manifest signs, the utility model is collected by the sound that the rock failure mechanism of rock before the inbreak is sent, pass through digitized processing, be converted to the signal of telecommunication, report to the police by sound, light warning device.

Changing Pattern is pressed in the utility model base area, the goaf is between preceding 30 minutes to 120 minutes of inbreak, and ore pillar is bound to divide, and top board will rupture, and the rock acoustic emission that these destructions take place to be produced is converted to alarm signal, safe escape behind the signal that receives the report for police service through this device.The heavy casualties serious accident that the utility model effectively avoids goaf large tracts of land inbreak to be taken place, early-warning and predicting before the accident of accomplishing takes place is for the safe escape of personnel and property gains time.

The utility model will improve the mine safety degree greatly, and the major safety risks that make this people of goaf see that the people is afraid of have been accomplished to prevent controlled, thereby reduce the generation of security incident.

Weak point of the present utility model is not for to install other sound filters outside the rock acoustic emission, and solution is that this product is selected noise-free local the arrangement.

Description of drawings

Fig. 1 is the utility model alarm front panel schematic diagram;

Fig. 2 is the utility model alarm rear board schematic diagram;

Fig. 3 is the sound pick-up panel schematic diagram in the utility model;

Fig. 4 is a circuit block diagram of the present utility model;

Fig. 5 is circuit theory diagrams of the present utility model;

Fig. 6 is the circuit theory diagrams of the single sound pick-up in the utility model.

In the accompanying drawing:

1, position LED is digital shows; 2, the light-emitting nixie tube number of times shows; 3, light emitting diode intensity indication; 4, power supply indicator; 5, warning reset button; 6 search button; 7, power supply terminal; 8, sound pick-up common port M; 9, buzzer; 10, protective tube; The signal input part of 11～15, five test points; 16, sound pick-up wiring terminal; 17 sound pick-up pickup holes.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

The utility model goaf rock sound automatic alarming instrument is divided into main frame and sound pick-up two large divisions.

The front panel of host machine part as shown in Figure 1, rear board as shown in Figure 2, front panel comprises: position LED is digital to show 1, the light-emitting nixie tube number of times shows 2, light emitting diode intensity indication 3, power supply indicator 4, warning reset button 5, search button 6, and the reset button 5. of wherein reporting to the police searches button 6 and is combined as the memory clearing function.Rear board comprises: the signal input part 11～15 of power supply terminal 7, sound pick-up common port M8, buzzer 9, protective tube 10, five test points.

Sound pick-up part panel comprises as shown in Figure 3: sound pick-up wiring terminal 16, sound pick-up pickup hole 17.

The utility model circuit theory is shown in Fig. 4,5,6.

The utility model goaf rock sound automatic alarming instrument circuit part comprises: power circuit, central processor CPU, data storage IC2, buzz circuit, signal display circuit, relay buffer circuit, sound pick-up; In the power circuit, AC 220V AC power is through step-down, and rectifying and wave-filtering produces DC voltage, use for buzz circuit and signal display circuit, produce DC voltage through integrated regulator simultaneously and use for central processor CPU, AC power is connected to sound pick-up, for sound pick-up provides power supply; Sound pick-up can be set to five according to test point, and the rock noise signal of microphone pickup is sent in the relay buffer circuit, and the disconnecting relay adhesive that control is corresponding is sent signal into central processor CPU; Central processor CPU one the tunnel send data storage IC2 to preserve data in the mode of serial ports after inter-process, and export high potential simultaneously and promote buzz circuit, buzzer warning, another road number of writing to display circuit shows rock noise generation address, number of times, intensity.

One, the utility model goaf rock sound automatic alarming instrument basic functional principle:

The 220V alternating voltage enters automatic alarming instrument, enter sound pick up equipment along separate routes, through rectification, enter sound pick-up, noise level is controlled by the electric capacity sound-absorbing, entering the sound pick up equipment integrated circuit then handles, and the driving triode carries out work, make pickup signal enter the automatic alarming instrument central processing unit, after the alarm central processing unit is handled, can show the particular location in high, medium and low signal and the goaf, if the too high certain hour that surpasses of signal, automatically the warning drive unit will drive autoalarm and send alarm sound, thereby reaches the purpose of warning; Alarm also carries out record to the big or small particular location of the high, normal, basic signal of reporting to the police simultaneously, in order to later early warning.

Two, the utility model goaf rock sound automatic alarming instrument circuit theory explanation:

1, alarm is divided into main frame and two parts of sound pick-up.

Host machine part: adopt singlechip technology, can write down and show, can be convenient to the analysis situation by searching the rock noise quantity that button check that each test point occurs to the rock noise intensity of each test point and number of times.

This instrument can detect five points, for example: when rock noise appears in the 1# point, sound pick-up can divide three grades to be sent to main frame according to intensity of sound, pass through disconnecting relay 1A respectively, 1B, 1C delivers to single-chip microcomputer, single-chip microcomputer can be according to collection situation record number of times, show last intensity, the alarm of buzzing simultaneously can be removed this warning by start key.

Central processor CPU adopts AT89C51 to carry out data and handles.The rock noise number of times of being responsible for writing down each trouble point by serial data memory IC224C04 is in order to searching, and can be by removing historical record by starting and searching key simultaneously.

The signal display circuit part is by drive circuit IC3, and shift register IC4, drive circuit IC5, power amplifier tube Q1～Q8 form the serial shift dynamic display circuit and drive three charactrons and five groups of LED demonstration trouble points, number of times, intensity.

The relay buffer circuit is made up of five groups of disconnecting relays, and every group comprises three disconnecting relay A, B, and the corresponding three grades of intensity of C are connected with central processor CPU by the contact, are mainly used in isolation, anti-tamperingly cause the main frame maloperation.

The sound pick-up part: sound pick-up partly is that the parameter that has changed part of devices on the basis of existing sound pick-up forms, by three groups independently the audio collection amplifying circuit form, make three sound pick-ups be in different sensitivity and pick up rock noise, produce three grades of state of strength, by sound pick-up terminal A, B, C passes to main frame promotion disconnecting relay and passes to central processor CPU.

2, workflow:

The M of sound pick-up wiring terminal 16 is connected with main frame common port 8, and sound pick-up terminal A, each test point 11～15 three corresponding terminal of B, C and main frame connect.A little less than sound pick-up can 1～3 signal occur and represents persistent erection respectively according to intensity of sound size when rock noise occurs, form switching signal by sound pick-up terminal A, B, C terminal line passes to main frame to three terminals that should test point, according to the disconnecting relay duty, it is scanned by the P0 interface through central processor CPU 89C51, one the tunnel send data storage IC2 24C04 to carry out data storages in the mode of serial ports after inter-process, carry out buzzing by P1.4 interface output high potential simultaneously, another road is to pass through central processor CPU, shift register IC474HC164 and drive circuit IC3 ULN2003, IC5ULN2003 and the power amplifier tube Q1～Q8 power tube number of writing to display circuit, comprising position display, number of times shows, intensity shows, main frame can be according to the RST that obtains after treatment, show the place that rock noise takes place by charactron 1, charactron 2 shows that the number of times of rock noise appears in this point, and shows this rock noise strength grade at 3 places, reports to the police by buzzer 9 simultaneously.

Warning clear key 5 is used to cancel this warning buzzing, when searching key 6, system will show the rock noise number of times that test point location number and this point occur successively in 1 and 2 positions, be placed on the sound pick-up difference number consecutively of different location, this instrument can detect 5 places at most simultaneously, returns detected state automatically after searching end.This equipment can permanent keeping records under power-down conditions.When pressing simultaneously, button 5 and 6 will artificially remove the historical record of all test points.

3, circuit theory explanation:

Power unit: AC 220V AC power produces the 12V DC voltage through step-down, rectification, filtering, uses for buzz circuit and signal display circuit.This voltage produces 5V voltage for central processor CPU 89c51 use through integrated regulator simultaneously, and alternating voltage is connected to N, M end and uses for sound pick-up.

Sound pick-up and relay buffer circuit part: (is the example explanation with A in the middle of one group of sound pick-up) M, alternating voltage between the N, through being added on the controllable silicon KG through producing pulsating dc voltage after the rectification between A and the M behind the relay coil of A, simultaneously through resistance R 1, R2, produce DC voltage after the capacitor C 1 dividing potential drop filtering and use for amplifier and NAND gate IC 6 4011, the rock noise signal of microphone pickup output one high level after IC circuit 6 4011 shapings are sent in power amplifier tube Q1 amplification triggers controllable silicon KG conducting makes corresponding disconnecting relay A adhesive send into central processor CPU 89c51 to signal.Trigger voltage becomes low level after rock noise disappears, and the controllable silicon cutoff relay discharges, and other pickup circuit is similar, makes sound pick-up be operated in the rock noise that different sensitivity states picks up varying strength by the biasing resistor that changes power amplifier tube Q1 with capacitor C 4.Change the size of capacitor C 2 elements such as grade, the length that can regulate time of fire alarming.

Host machine part: central processor CPU 89C51 forms matrix circuit by the P0 interface, scanning disconnecting relay state (this state is corresponding to sound pick-up), during if any rock noise, sound pick-up picked up signal on the corresponding points, the control relay adhesive just has signal to be input to central processor CPU, and one the tunnel send data storage IC2 24C04 to preserve data in the mode of serial ports after inter-process, promote buzz circuit, buzzer warning by P1.4 mouth output high potential simultaneously.The display part is gone on another road, the line scanning of forming through shift register IC4 74HC164, drive circuit IC5 ULN2003 by serial ports, form column scan with the P2 mouth of central processor CPU through drive circuit IC3 ULN2003, power amplifier tube Q1～Q8 and carry out dynamic process, drive the intensity that three charactrons show rock noise generation address, number of times and drive five groups of diode displaying rock noises.

The P1.0 mouth of central processor CPU is used to remove this warning buzzing with external reset button 5.The external button 6 that searches of P1.1 mouth is pressed the back central processor CPU and will access record from memory, shows the rock noise number of times of each test point successively by replacing in second speed once.When button 5 and 6 is pressed simultaneously with the data of preserving in the full scale clearance instrument.

The utility model circuit safety is reliable, and is stable, and it is low to be convenient to installation and cost, components and parts highly versatile, easily buying.

Claims (1)

1. goaf rock sound automatic alarming instrument, comprising: the alarm panel is characterized in that: the circuit of alarm comprises: power circuit, central processor CPU, data storage IC2, buzz circuit, signal display circuit, relay buffer circuit, sound pick-up; In the power circuit, the 220V AC power is through step-down, and rectifying and wave-filtering produces DC voltage, use for buzz circuit and signal display circuit, produce DC voltage through integrated regulator simultaneously and use for central processor CPU, AC power is connected to sound pick-up, for sound pick-up provides power supply; Sound pick-up is set to a plurality of according to test point, the rock noise signal of microphone pickup is sent in the relay buffer circuit, and the disconnecting relay adhesive that control is corresponding is sent signal into central processor CPU; Central processor CPU one the tunnel send data storage IC2 to preserve data in the mode of serial ports after inter-process, and export high potential simultaneously and promote buzz circuit, buzzer warning, another road number of writing to display circuit shows rock noise generation address, number of times, intensity.

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