Coal mine noise and vibration detector based on alarm sound and implementation method thereof
A vibration detector, a technology for implementing a method, applied in the direction of measuring ultrasonic/sonic/infrasonic waves, improving amplifiers to reduce noise effects, amplifiers with semiconductor devices/discharge tubes, etc., can solve problems such as difficult worker alertness
Pending Publication Date: 2020-04-07
崔建国
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Problems solved by technology
[0008] It is generally difficult to arouse the alertness of the staff in time through the recorder or optical indication. If the "alarm sound" is used as the warning of noise or vibration, it is easier to arouse people's alertness, but the "alarm sound" also belongs to the category of noise. Alarm sound" may activate the detection device to alarm itself
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[0018] The principle of noise and vibration detection scheme based on alarm sound
[0019] For ordinary noise detection, such as fan noise, crusher noise, etc., high-sensitivity pickups can be used to obtain noise signals.
[0020] In fact, some vibrations are different from noise, such as vibrations caused by geological disasters, vibrations caused by the operation of the above-mentioned mechanical equipment, etc. The detection of these vibrations must be different from the detection of noise sources.
[0021] For mechanical or geological vibrations, a common vibration sensor 801S can be used to detect vibrations, so as to obtain vibration information.
[0022] Therefore, a noise and vibration detector circuit can be designed from two aspects. Regardless of whether it detects noise or vibration, this detector can emit harsh alarm sounds, but it only detects and alarms external noise and vibration. The alarm sound issued by itself will not call the police.
[0023] Electrica...
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The invention discloses a coal mine noise and vibration detector based on alarm sound and an implementation method thereof. The coal mine noise and vibration detector comprises a pickup circuit, a high-pass filter circuit, a linear amplifier circuit, a comparator circuit, a multivibrator circuit, a loudspeaker circuit, a switching circuit, a vibration signal generation circuit and a + / -4.5 V powersupply generation circuit, a vibration signal is generated by a sensor 801S, a weak noise signal generated by the loudspeaker circuit and the pickup circuit is amplified by the linear amplifier; thenoise or vibration enters the comparator circuit through the switch circuit and is compared with a safety threshold value, if the noise or vibration exceeds the safety threshold value, the comparatorcircuit outputs a signal to trigger the multivibrator circuit, the generated oscillation signal is amplified, and the loudspeaker circuit makes a sound, which indicates that a safety plan needs to bestarted immediately, and personal safety is guaranteed.
Description
technical field [0001] The present invention relates to a coal mine noise and vibration detector technology based on alarm sound. For the detection of vibration or noise, the detection results can only be recorded by computer or indicated by optical technology (such as light-emitting diodes, liquid crystal displays, etc.). This technology can Realize the use of alarm sound to implement the detection and warning of abnormal noise and vibration of mine production environment or mechanical equipment. Background technique [0002] The noise or vibration sources of mines and mines are more complicated, such as the main fan of the mine ventilator room, the main belt head part of the ground production system, crushers, vibrating screens, cutting machines in the production workshop, pneumatic rock drills, etc. [0003] Industrial workers in the above production environment suffer from long-term adverse effects of productive vibration and noise, and symptoms such as vegetative nerve ...
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Patent Timeline
Login to View More IPC IPC(8): G01H11/06H03F1/26H03F1/02H03F1/32H03F3/187H03F3/213H03F3/21H03F3/217H03F3/68
CPCG01H11/06H03F1/0205H03F1/26H03F1/3205H03F3/187H03F3/211H03F3/213H03F3/2171H03F3/68
Inventor 崔建国宁永香崔建峰崔燚李光序
Owner 崔建国