CN210038530U

CN210038530U - Control system for direct-reading dust concentration measuring instrument calibrating device

Info

Publication number: CN210038530U
Application number: CN201921171628.2U
Authority: CN
Inventors: 陈小峰; 陈新锋; 王易初; 钱欢
Original assignee: CHANGSHU DEYU MINE MECHANICAL CO LTD
Current assignee: CHANGSHU DEYU MINE MECHANICAL CO LTD
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-02-07
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a control system for direct-reading dust concentration measuring instrument calibrating installation, including PLC programmable controller, touch-sensitive screen, analog input module AD converter, power button and execution button, PLC programmable controller respectively with the two-way electric connection of touch-sensitive screen and analog input module AD converter, PLC programmable controller's input respectively with the output electric connection of power button, execution button, converter fault module, PLC programmable controller's output respectively with the input electric connection of power control module, power indicator, variable frequency fan, dust collecting equipment, compressed air generator, dust conveyer belt. The utility model discloses the actual operation that facilitates the user of ability better only works at an operation platform promptly, need not make a round trip to rush over in each operation panel, and this control system control is accurate, high-efficient simultaneously, can concentrate data collection and analytical data, convenient to use.

Description

Control system for direct-reading dust concentration measuring instrument calibrating device

Technical Field

The utility model relates to a detect inspection mechanism technical field, specifically be a control system for direct-reading dust concentration measurement instrument calibrating installation.

Background

At present, most of detection and inspection mechanisms, product manufacturing enterprises and mine metering units in China are multi-component integration aiming at a calibrating device of a direct-reading dust concentration measuring instrument, but not a scientific and accurate calibrating device with centralized system control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a control system for direct-reading dust concentration measurement instrument calibrating installation to because each control system need not make a round trip to run between each system at same work platform laboratory technician during the operation of proposing in solving above-mentioned background art, cause a great deal of inconvenience to laboratory technician's operation, the inconvenient problem of installation construction is caused to the voltage level difference between a plurality of systems simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a control system for a direct-reading dust concentration measuring instrument calibrating device comprises a PLC programmable controller, a touch screen, an analog input module A/D converter, a power supply key and an execution key, the PLC is respectively and electrically connected with the touch screen and the analog quantity input module A/D converter in a bidirectional way, the input end of the PLC is respectively and electrically connected with the output ends of the power supply key, the execution key and the frequency converter fault module, the output end of the PLC is respectively and electrically connected with the input ends of the power supply control module, the power supply indicator lamp, the frequency conversion fan, the dust removal equipment, the compressed air generator and the dust conveyor belt, the input end of the analog input module A/D converter is respectively electrically connected with the input ends of the belt speed regulation potentiometer, the air pressure sensor, the dust concentration sensor and the real-time wind speed sensor.

Preferably, the output end of the power supply key is electrically connected with a frequency converter and a dust generating device.

Preferably, the dust generating device comprises a dust stirrer and a dust conveying belt, the output end of the dust stirrer is connected with the feeding end of the dust conveying belt, a miniature direct current motor is installed in the dust stirrer, and a PWM speed regulation controller is installed in the dust conveying belt.

Preferably, the execution key comprises a fan control key, a dust removal device control key, a compressed air generator control key, an air pressure sensor control key, a dust concentration sensor control key and a real-time air speed sensor control key.

Compared with the prior art, the beneficial effects of the utility model are that: the actual operation that can be better make things convenient for the user of service promptly only works at an operation platform, need not make a round trip to rush to ripples in each operation panel, and this control system control is accurate, high-efficient simultaneously, can concentrate data acquisition and analytical data, convenient to use.

Drawings

FIG. 1 is a block diagram of the overall system of the present invention;

FIG. 2 is a key connection block diagram of the power supply of the present invention;

FIG. 3 is a schematic view of a dust generating device of the present invention;

fig. 4 is a schematic diagram of the execution button of the present invention.

In the figure: 1. a PLC programmable controller; 2. a touch screen; 3. analog input module A/D converter; 4. a power supply key; 41. a frequency converter power supply; 42. a dust generating device; 421. a dust stirrer; 5. executing a key; 51. a fan control key; 52. a dust removing device control key; 53. a control button of the compressed air generator; 54. an air pressure sensor control key; 55. a dust concentration sensor control key; 56. a real-time wind speed sensor control key; 6. a frequency converter fault module; 7. a power supply control module; 8. a power indicator light; 9. a variable frequency fan; 10. a dust removal device; 11. a compressed air generator; 12. a dust conveyor belt; 13. a belt speed regulation potentiometer; 14. an air pressure sensor; 15. a dust concentration sensor; 16. and a real-time wind speed sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a control system for a direct-reading dust concentration measuring instrument calibrating device comprises a PLC (programmable logic controller) 1, a touch screen 2, an analog quantity input module A/D (analog to digital) converter 3, a power supply key 4 and an execution key 5, wherein the PLC 1 is respectively and bidirectionally electrically connected with the touch screen 2 and the analog quantity input module A/D converter 3, the touch screen 2 is mainly used for displaying the real-time state of each device, reading and writing system parameters, displaying and storing data acquired by each sensor in real time and the like, wherein the real-time state of the device comprises the states of starting and stopping a variable frequency fan 9, starting and stopping a dust removing device 10, generating compressed air, operating a dust conveying belt 12 and the like, the reading and writing of the system parameters comprise the operating frequency of a frequency converter 41, the current operating gear of the dust conveying belt 12 and other parameters, and the acquisition of the sensor data comprises the real-time wind, The collected data is displayed and stored in real time according to the current dust concentration, the pressure of real-time compressed air and other data, so that historical data can be inquired conveniently to know the running condition of the system;

the input end of the PLC 1 is respectively and electrically connected with the power supply key 4, the execution key 5 and the output end of the frequency converter fault module 6, the execution key 5 comprises a fan control key 51, a dedusting equipment control key 52, a compressed air generator control key 53, an air pressure sensor control key 54, a dust concentration sensor control key 55 and a real-time air speed sensor control key 56, and the execution keys are used for respectively controlling the starting and stopping of the frequency conversion fan 9, the dedusting equipment 10, the compressed air generator 11, the air pressure sensor 14, the dust concentration sensor 15 and the real-time air speed sensor 16;

the output end of the power supply key 4 is electrically connected with a frequency converter 41 and a dust generating device 42, the dust generating device 42 comprises a dust stirrer 421 and a dust conveyor belt 12 and is used for conveying dust into a wind tunnel to realize the generation of a dust environment, the output end of the dust stirrer 421 is connected with the feeding end of the dust conveyor belt 12, a micro direct current motor is installed in the dust stirrer 421, and a PWM (pulse-width modulation) speed regulation controller is installed in the dust conveyor belt 12;

the output end of the PLC 1 is respectively and electrically connected with the input ends of a power control module 7, a power indicator light 8, a variable frequency fan 9, a dust removal device 10, a compressed air generator 11 and a dust conveyor belt 12, and is used for sending control electric signals to all controlled components;

the input end of the analog input module A/D converter 3 is respectively and electrically connected with the input ends of the belt speed regulation potentiometer 13, the air pressure sensor 14, the dust concentration sensor 15 and the real-time wind speed sensor 16, and is used for performing analog-to-digital conversion on the input signal and the detection signal and transmitting the analog-to-digital conversion to the PLC 1.

The working principle is as follows: as shown in the attached figure 1, the power button 4 is pressed to turn on the power and input signals to the PLC 1, the PLC 1 controls the power connection according to the input signals, the connected power comprises the power of the frequency converter 41 and the power of the dust generating device 42, the execution button 5 can act after the power connection, the execution button 5 comprises a fan control button 51, a dust removing device control button 52, an air pressure sensor control button 54, a dust concentration sensor control button 55 and a real-time wind speed sensor control button 56, when the execution button 5 is pressed, the frequency conversion fan 9 and the dust removing device 10 start to work, the dust concentration sensor 15 and the real-time wind speed sensor 16 start to collect data, the collected data is sent to the A/D converter 3 of the analog quantity input module, the analog/digital conversion is carried out through the module and the data is input to the PLC 1 for data processing, calculating the real-time wind speed and the dust concentration in the current wind tunnel, pressing a control button 53 of a compressed air generator when the average wind speed reaches 2m/s, detecting the current gas pressure by an air pressure sensor 14, acquiring data, sending the data into an analog input module A/D converter 3, carrying out analog/digital conversion by the module and inputting the data into a PLC (programmable logic controller) 1 for data processing, calculating the pressure of the current compressed air, ejecting the compressed air by the compressed air generator 11 only when the pressure is more than 0.4MPa, otherwise, indicating that the air pressure is insufficient on a touch screen 2, pressing the ejected compressed air, connecting a power supply for a dust generating device 42 through a power button 4, entering a working state, wherein the dust generating device 42 comprises a dust stirrer 421 and a dust conveyor belt 12, the dust stirrer 421 is carried out by a micro direct current motor at a constant speed, and the dust conveyor belt 12 adopts PWM (pulse-width modulation) speed regulation, the speed regulation mode comprises the steps that (0-10) V analog quantity regulation is carried out through a belt speed regulation potentiometer 13, the analog quantity is input into an analog quantity input module A/D converter 3, analog/digital conversion is carried out through the module and input into a PLC (programmable logic controller) 1 for data processing, the conveying speed (PWM (pulse-width modulation) speed regulation control) of a dust conveying belt 12 needing to be output is calculated, and therefore the dust generation concentration is controlled, wherein when the voltage of the belt speed regulation potentiometer 13 is 0V, the rotating speed stops, and no dust is generated; when the voltage of the belt speed-regulating potentiometer 13 is 10V, the rotating speed is highest, the dust generation amount is largest, when a signal is input into the frequency converter fault module 6, the system stops running, and after a fault reset key on the down converter 41 is pressed to eliminate the fault, the system can be operated again;

the system operation process follows the principle of first switch, then switch and then switch: power on → variable frequency fan start → dust removal equipment start → compressed air generator start → dust conveyor stop → compressed air generator stop → dust removal equipment stop → variable frequency fan stop.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a control system for direct-reading dust concentration measurement instrument calibrating installation, includes PLC programmable controller (1), touch-sensitive screen (2), analog input module AD converter (3), power button (4) and execution button (5), its characterized in that: the PLC programmable controller (1) is respectively and electrically connected with the touch screen (2) and the analog input module A/D converter (3) in a bidirectional way, the input end of the PLC (1) is respectively and electrically connected with the output ends of the power supply key (4), the execution key (5) and the frequency converter fault module (6), the output end of the PLC (1) is respectively and electrically connected with the input ends of the power supply control module (7), the power supply indicator lamp (8), the frequency conversion fan (9), the dust removal equipment (10), the compressed air generator (11) and the dust conveyor belt (12), the input end of the analog input module A/D converter (3) is respectively electrically connected with the input ends of the belt speed regulation potentiometer (13), the air pressure sensor (14), the dust concentration sensor (15) and the real-time wind speed sensor (16).

2. The control system for the verification device of the direct-reading dust concentration measuring instrument according to claim 1, wherein: the output end of the power supply key (4) is electrically connected with a frequency converter (41) and a dust generating device (42).

3. The control system for the verification device of the direct-reading dust concentration measuring instrument according to claim 2, wherein: the dust generating device (42) comprises a dust stirrer (421) and a dust conveying belt (12), the output end of the dust stirrer (421) is connected with the feeding end of the dust conveying belt (12), a miniature direct current motor is installed in the dust stirrer (421), and a PWM speed regulation controller is installed in the dust conveying belt (12).

4. The control system for the verification device of the direct-reading dust concentration measuring instrument according to claim 1, wherein: the execution key (5) comprises a fan control key (51), a dedusting equipment control key (52), a compressed air generator control key (53), an air pressure sensor control key (54), a dust concentration sensor control key (55) and a real-time air speed sensor control key (56).