CN201874618U

CN201874618U - Automatic monitoring instrument for air quantity in mine

Info

Publication number: CN201874618U
Application number: CN2010206303289U
Authority: CN
Inventors: 赵伏军; 彭云
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-06-22
Anticipated expiration: 2020-11-29

Abstract

An automatic mine air volume monitor, the monitor is fixed on the pipe wall in the middle of a rigid air duct, the working surface of the monitor is provided with an LCD display and buttons, and a single-chip microcomputer is provided in the monitor, and the single-chip microcomputer is connected through an LCD circuit LCD display screen, single-chip microcomputer is connected to keys through key circuit, single-chip microcomputer is connected to several ultrasonic transducers through cables, and ultrasonic transducers are set in the pipe wall of rigid air duct; single-chip microcomputer is respectively connected to A/D converter, timing and transceiver controller and Alarm circuit; the A/D converter is connected to the amplifier and the filter, the amplifier and the filter are connected to the sequence and the transceiver controller, and the sequence and the transceiver controller are connected to a plurality of ultrasonic transducers, which overcomes the problem that the existing air volume detector only It can detect the air volume of the local fan, and the use range is limited. It is suitable for automatic monitoring of mine air volume.

Description

The mine blast volume automonitor

Technical field

The utility model relates to a kind of mine blast volume automonitor.

Background technology

At present, the air measuring probe has mechanical probe, differential pressure transporting probe, hot line probe, ultrasonic probe etc., the mine blast volume measurement is the basic routine work of ventilating management and ventilation safety, measure roadway apoplexy speed by special survey wind person, obtain air quantity by calculating again, the surveying work amount is big, waste time and energy, and there is certain artificial measure error in certainty of measurement, can't the continuous monitoring air quantity, can not in time find and deal with problems.Also there is not Related product to realize automatic air quantity monitoring at present, mine local ventilator all adopts the air duct serial connection that fresh wind is delivered to and uses the wind place, air supplying distance is generally all longer, all there be certain leaking out in the stitching pinprick of air duct interface, air duct breakage, adhesive plaster air duct, cause air duct outlet air quantity promptly to use the actual wind supply quantity in wind place, also do not have product that air duct outlet air quantity is promptly detected with the actual wind supply quantity in wind place at present less than the booster air output.

Patent name is " mining to revolving booster airflow pressure detector ", the patent No. is 201020032056.2 patent employing differential pressure transmitter detection ventilation fan air quantity, can only be used to detect the local ventilation fan delivery, the scope of application is restricted, and the air quantity of surveying is not that the air duct exit is promptly local with the actual wind supply quantity in wind place.

Summary of the invention

Goal of the invention of the present utility model provides a kind of the probe by the ultrasonic transmission/reception one and transmits and receives ultrasonic pulse in turn, calculates wind speed and air quantity with software in single-chip microcomputer, realizes monitoring of real-time on-site air quantity and the mine blast volume automonitor of reporting to the police.

For achieving the above object, a kind of mine blast volume automonitor comprises that monitor is packed on the tube wall at rigidity airduct middle part, and the work plane of described monitor is provided with LCD display and button, and single-chip microcomputer is set in the monitor; Described single-chip microcomputer connects LCD display through the LCD circuit, and single-chip microcomputer connects button through key circuit, and single-chip microcomputer connects several ultrasonic wave energy devices through cable, and ultrasonic transducer is arranged in the tube wall of rigidity airduct; Single-chip microcomputer connects A/D converter, sequential and transceiver controller and warning circuit respectively; Described A/D converter connects amplification and wave filter, amplifies and wave filter connection sequential and transceiver controller, and sequential and transceiver controller connect several ultrasonic transducers.

In order to realize products perfection, improve, improve combination property of the present utility model, further step is:

On the outer wall at described rigidity airduct two ends fastening groove is set.

Be provided with on the outer wall at described rigidity airduct middle part and hang parts.

Described warning circuit connects alarm.

Described single-chip microcomputer is provided with the RS232 interface.

The utility model adopts monitor to be packed on the tube wall at rigidity airduct middle part, the work plane of described monitor is provided with LCD display and button, single-chip microcomputer is set in the monitor, described single-chip microcomputer connects LCD display through the LCD circuit, single-chip microcomputer connects button through key circuit, single-chip microcomputer connects several ultrasonic wave energy devices through cable, and ultrasonic transducer is arranged in the tube wall of rigidity airduct; Single-chip microcomputer connects A/D converter, sequential and transceiver controller and warning circuit respectively; Described A/D converter connects amplification and wave filter, amplify and wave filter connection sequential and transceiver controller, sequential and transceiver controller connect the scheme of several ultrasonic transducers, have overcome existing air quantity detector and can only detect the local ventilation fan delivery, the defective that the scope of application is restricted.

The beneficial effect that the utility model is produced compared to existing technology:

1, can monitor air quantity in various ventilation roadways, pipeline and the air duct, manually set minimum airflow value, monitor air quantity in real time, when air quantity is too small, realize manually reporting to the police, the prompting related personnel carries out respective handling.

2, design has the RS232 communication interface, measured result can be sent to control centre.

3, the utility model is simple in structure, and is easy for installation flexible, low in energy consumption, safe and reliable, can be widely used in the various ventilation systems.

4, adjust actual air output by monitoring, prevented that gas density from transfiniting.

5, realized the ventilating management networking, reached as required and to have ventilated.

The utility model is applicable to the automatic monitoring of mine blast volume.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Description of drawings

Fig. 1 is a monitor external component connection layout of the present utility model.

Fig. 2 is the control structure block diagram of monitor.

Fig. 3 is the assembling front view of monitor.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the left view of Fig. 3.

Among the figure: 1, rigidity airduct, 2, monitor, 3, hang parts, 4, ultrasonic transducer, 5, cable, 6, LCD display, 7, button, 8, fastening groove, 9, single-chip microcomputer, 10, sequential and transceiver controller, 11, warning circuit, 12, the RS232 interface, 13, A/D converter, 14, amplification and wave filter, 15, the LCD circuit, 16, key circuit.

The specific embodiment

To shown in Figure 5, a kind of mine blast volume automonitor comprises that monitor 2 is packed on the tube wall at rigidity airduct 1 middle part by accompanying drawing Fig. 1, and the work plane of monitor 2 is provided with LCD display 6 and button 7, and single-chip microcomputer 9 is set in the monitor 2; Single-chip microcomputer 9 connects LCD display 6 through LCD circuit 15, and single-chip microcomputer 9 connects button 7 through key circuit 16, and single-chip microcomputer 9 connects several ultrasonic transducers 4 through cable 5, and ultrasonic transducer 4 is arranged in the tube wall of rigidity airduct 1; Single-chip microcomputer 9 connects A/D converter 13, sequential and transceiver controller 10 and warning circuit 11 respectively; Described A/D converter 13 connects amplification and wave filter 14, amplifies and wave filter 14 connection sequential and transceiver controllers 10, and sequential and transceiver controller 10 connect several ultrasonic transducers 4.Fastening groove 8 is set on the outer wall at rigidity airduct 1 two ends.Be provided with on the outer wall at rigidity airduct 1 middle part and hang parts 3.Warning circuit 11 connects alarm.Single-chip microcomputer 9 is provided with RS232 interface 12.

In Fig. 2, the operating principle of the utility model embodiment is: single-chip microcomputer 9 is accepted the signal that button 7 and A/D converter 13 are sent here according to the requirement of systems soft ware, realization is to the control of sequential and transceiver controller 10, LCD display 6 and warning circuit 11, the calculated signals of sending here according to A/D converter 13 goes out wind speed and the air quantity in the rigidity airduct 1 and monitors air quantity, realizes Realtime Alerts.Button 7 is used for control single chip computer 9 and established standards air quantity, standard wind speed value and system clock.Sequential and transmitting-receiving control circuit 10 produce control signal control transmitting-receiving control circuit under the control of single-chip microcomputer 9, make a plurality of ultrasonic transducers 4 transmit and receive ultrasonic wave in turn.The amplifying circuit of amplification and wave filter 14 amplifies signal, and in good time automatic gain is controlled, temperature-compensating; Filter circuit filtering noise signal.A/D converter 13 is realized the conversion of analog to digital signal.LCD circuit 15 shows actual air volumes, manually sets minimum air quantity, wind speed and system time.Key circuit 16 is realized artificial the setting and power on/off function; Power supply adopts high capacity cell, is the complete machine power supply.

Rigidity air duct 1 is serially connected in the mine ventilation system, realizes reliable the connection by fastening groove 8.In a preferred embodiment, ultrasonic transducer 4 is installed on the rigidity air duct 1, and the center of using 4,2 ultrasonic transducers 4 of 2 ultrasonic transducers is by the axle center of rigidity air duct 1 and on same straight line.

Claims

1. An automatic mine air volume monitor, characterized in that it comprises: the monitor (2) is fixed on the pipe wall in the middle of the rigid air duct (1); the working surface of the monitor (2) is provided with an LCD display (6) and button (7), single-chip microcomputer (9) is set in monitor (2); said single-chip microcomputer (9) connects LCD display screen (6) through LCD circuit (15), and single-chip microcomputer (9) passes button circuit (16) ) to connect the button (7), the single-chip microcomputer (9) is connected to several ultrasonic transducers (4) through the cable (5), and the ultrasonic transducer (4) is installed on the pipe wall of the rigid air duct (1); the single-chip microcomputer (9 ) are respectively connected to the A/D converter (13), timing and transceiver controller (10) and alarm circuit (11); the A/D converter (13) is connected to the amplification and filter (14), the amplification and filter (14) Connect the timing and sending and receiving controller (10), and the timing and sending and receiving controller (10) connect several ultrasonic transducers (4).

2. The automatic mine air volume monitor according to claim 1, characterized in that fastening grooves (8) are provided on the outer walls of both ends of the rigid air duct (1).

3. The automatic mine air volume monitor according to claim 1, characterized in that a hanging component (3) is arranged on the outer wall of the middle part of the rigid air duct (1).

4. The automatic mine air volume monitor according to claim 1, characterized in that the alarm circuit (11) is connected to an alarm.

5. A mine air volume automatic monitor according to claim 1, characterized in that the single-chip microcomputer (9) is provided with an RS232 interface (12).