Coal mine roadway strain data acquisition method and device based on three-level wake-up mechanism

A technology for data acquisition and coal mine roadway, which is applied in data acquisition and recording, mining devices, mining equipment and other directions, and can solve the problems of large power consumption of strain acquisition devices, increased cost, and inability to perform real-time acquisition.

Active Publication Date: 2015-01-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the strain data acquisition devices in coal mine roadways usually use batteries as power supply equipment, but the service life of batteries is limited, and it is difficult to replace batteries in industrial sites, so how to reduce system power consumption to prolong the service life of batteries is very important
[0004] With the development of wireless technology, wireless communication modules are widely used in strain data acquisition devices, which provide great convenience for data acquisition, such as convenient movement, wide working range, simple operation, etc., but a disadvantage is that the strain Acquisition devices consume more power. Today, power consumption has become an important indicator for designing data sampling devices
[0005] The processor in the traditional strain data acquisition device is in a continuous wo

Method used

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  • Coal mine roadway strain data acquisition method and device based on three-level wake-up mechanism
  • Coal mine roadway strain data acquisition method and device based on three-level wake-up mechanism
  • Coal mine roadway strain data acquisition method and device based on three-level wake-up mechanism

Examples

Experimental program
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Example Embodiment

[0056] Example 1

[0057] Step 1: Initialize the data acquisition device. The handheld terminal (104), the central processing unit (106), the sampling module (108), and the wireless communication module (109) are all set to sleep mode, and the infrared receiver (103) is set to receive mode;

[0058] Step 2: Determine the current RTC timing sampling interval. First calculate the average strain based on the N times historical strain data of the ith strain gauge The unit of strain is μm, and then the variance of N-time historical strain data of M strain gauges is calculated separately. Calculate the maximum value S of the variance of all strain gauges 2 max =max{S 1 2 ,S 2 2 ...S M 2}, establish the variance threshold (D 1 =0, D 2 =100, D 3 = 200, D 4 =300, D 5 =400, D 6 =500, D 7 =600, D 8 =700, D 9 =800, D 10 =900, D 11 =1000, D 12 =1100, D 13 =1200, D 14 =1300, D 15 =1400, D 16 = 1500, D 17 =1600, D 18 = 1700, D 19 =1800, D 20 = 1900) and the ...

Example Embodiment

[0093] Example 2

[0094] A strain data acquisition device, the device mainly comprises: an RTC timer (101), a collection button (102), an infrared receiver (103), a handheld terminal (104), an AND gate circuit (105), and a central processing unit (106) ), a sampling module power supply control circuit (107), a sampling module (108), and a wireless communication module (109). The RTC timer (101) uses a timer for timing, and the timer generates an interrupt signal of a low-level pulse after reaching the set count time; the acquisition button (102) generates an interrupt signal when the button is pressed. a low-level signal; the infrared receiver (103) is used to receive an infrared signal, and when an infrared signal is received, a low-level pulse signal is generated by an infrared signal conversion circuit; the handheld terminal (104) is used to send The infrared signal is sent to the infrared receiver (103), and the sampling data is transmitted; the AND gate circuit (105) ad...

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Abstract

Disclosed are a coal mine roadway strain data acquisition method and device based on a three-level wake-up mechanism. The three-level wake-up mechanism is characterized in that timing data are acquired by an adaptive RTC (real time clock) timer wake-up method, RTC timing acquisition time is adaptively adjusted according to acquired roadway strain data fluctuation situations, so that the working frequency of a CPU (central processing unit) can be reduced when coal mine roadway strain and mutant data are acquired in an undistorted manner, overall power consumption is reduced, storage efficiency is improved, real-time data can be acquired by a patroller under a coal mine by an acquisition key wake-up method, the acquired data are wirelessly transmitted by a worker through an infrared signal wake-up method, historical strain data of a roadway are more conveniently checked by the aid of a handheld terminal, power consumption of a data acquisition device is reduced by the three-level wake-up mechanism, and a patrol inspection mechanism under the coal mine is met.

Description

technical field [0001] The patent of the present invention relates to a coal mine roadway strain data acquisition method and device based on a three-level wake-up mechanism, in particular to a data acquisition device, which belongs to the technical field of measurement, control and automation. Background technique [0002] The strain data acquisition device is an automatic equipment capable of real-time data acquisition, automatic storage and recording, signal preprocessing, real-time display, real-time state analysis, automatic transmission and other functions in coal mine roadways. [0003] At present, the strain data acquisition devices in coal mine roadways usually use batteries as power supply equipment, but the service life of batteries is limited, and it is difficult to replace batteries in industrial sites, so how to reduce system power consumption to prolong battery service life is very important. [0004] With the development of wireless technology, wireless commun...

Claims

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Application Information

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IPC IPC(8): G06F17/40E21F17/18
Inventor 黄永明虞金花章国宝张露吴奥
Owner SOUTHEAST UNIV
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