CN105116441A - Method of reducing mine earthquake monitoring system data quantities and mine earthquake monitoring apparatus - Google Patents
Method of reducing mine earthquake monitoring system data quantities and mine earthquake monitoring apparatus Download PDFInfo
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Abstract
The invention discloses a method of reducing mine earthquake monitoring system data quantities and a mine earthquake monitoring apparatus. The method comprises the following steps that mine earthquake amplitudes are monitored in a real-time manner through each node; when the mine earthquake amplitude in a certain node reaches a threshold value, an interrupt signal is formed; the time information of the interrupt moment is acquired to be the seismic wave first arrival moment and sent to a host computer through a network; the host computer sends the seismic wave first arrival moment and data transmission time intervals to each monitoring node in a broadcasting way through the network; and each monitoring node sends sampling data of a plurality of periods before and after the seismic wave first arrival moment to the host computer. The mine earthquake monitoring apparatus based on the method mainly comprises a synchronizing module, a threshold comparator, a main memory, an auxiliary memory, and a memory of data to be sent. When a mine earthquake event happens, monitoring data transmission is then performed between the monitoring apparatus and the host computer. A lot of useless data are prevented from being networked. Data are further prevented from being lost due to network congestion. Conditions that certain nodes fail to sense the mine earthquake and some data are not reported are further prevented.
Description
Technical field
The present invention relates to method and the ore deposit shake monitoring device of the transmission of a kind of ore deposit shake monitoring system data, specifically a kind of method and ore deposit shake monitoring device reducing ore deposit shake monitoring system volume of transmitted data, belongs to mine monitoring technical field.
Background technology
Ore deposit shake is the mine earthquake of Mining-induced, is the Nature disaster of mine.When ore deposit shake occurs, country rock releases energy rapidly, and coal petrography moment destroys suddenly, causes roof fall wall caving, support fractures, tunnel blocks, ground vibration, damaged house and personal injury.Distributed ore deposit shake monitoring system accurately can be located and the information such as frequency, energy of Real-Time Monitoring, record ore deposit shake activity in certain area, and according to the velocity of longitudinal wave of these information inverting coal and rock, the distribution characteristics etc. of analysis stress, for prediction the rock burst fatalness area provides support.
Distributed ore deposit shake monitoring system needs to arrange monitoring node in a large number, and each node needs to monitor vibration signal with high sampling rate, high sampling precision, so volume of transmitted data is large, exerts heavy pressures on, easily because network blockage causes the consequence of loss of data to network.
Summary of the invention
A kind of ore deposit that reduces is the object of the present invention is to provide to shake the method for monitoring system volume of transmitted data and the ore deposit shake monitoring device based on the method, the method and device can shake a large amount of useless Monitoring Data of time effective filtering according to ore deposit, only valid data during the shake of transmission ore deposit, avoid loss of data, guarantee data transmission security.
For achieving the above object, a kind of method reducing ore deposit shake monitoring system volume of transmitted data, sampled data by each monitoring node real-time sampling seismic data, and is stored in respective storage unit by the method, further comprising the steps of:
The first step, each monitoring node Real-Time Monitoring ore deposit amplitude of vibration degree, when certain node (being set to node A) ore deposit amplitude of vibration degree reaches threshold value, forms look-at-me;
Second step, node A gathers the temporal information in interruption moment as seismic wave initial time, and by network, seismic wave initial time is sent to host computer;
3rd step, seismic wave initial time and number are passed time interval by network with broadcast mode and send to each monitoring node by host computer;
4th step, the sampling data transmitting that number passes in time interval is given host computer by each monitoring node.
Based on a kind of ore deposit shake monitoring device of said method, comprise shock sensor, A/D converter, storage unit, master cpu, synchronization module and threshold comparator; Synchronization module receives the time synchronizing signal that time service device is sent, and with time service device time synchronized, forms sampling pulse and sends to A/D converter; A/D converter carries out A/D sampling to the signal that shock sensor sends under the effect of sampling pulse, and gives master cpu by sampling data transmitting, and the A/D sampled data received is temporary in storage unit by master cpu; Threshold comparator receives the voltage signal of shock sensor, forms look-at-me when this voltage signal exceedes predetermined threshold value; Synchronization module, under the effect of look-at-me, gathered for the first ore deposit shake time and sends to master cpu; Master cpu carries out exchanges data by network and host computer.
When ore deposit shake event occurs, monitoring device and host computer do not carry out a large amount of Monitoring Data to be transmitted, and network is in idle condition; When ore deposit shake event occur time, monitoring device and host computer just carry out Monitoring Data transmission, avoid a large amount of gibberish surf the Net, alleviate network number pressure transmission power, can not because of network congestion obliterated data.On the other hand, as long as the present invention has a monitoring node that shake event in ore deposit occurs, seismic wave initial time can be sent to each node master cpu with broadcast mode by host computer, the Monitoring Data of each node is sent to host computer by each master cpu, avoids the situation failing to report data because certain node that the uncertainty of electron device or the differing property of sensitivity level of sensor cause does not perceive ore deposit shake and occurs.
Accompanying drawing explanation
Fig. 1 is the theory of constitution block diagram of ore deposit of the present invention shake monitoring device;
Fig. 2 is ore deposit of the present invention shake monitoring system schematic network structure.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Reduce a method for ore deposit shake monitoring system volume of transmitted data, sampled data by each monitoring node real-time sampling seismic data, and is stored in respective storage unit by the method, further comprising the steps of:
The first step, each monitoring node Real-Time Monitoring ore deposit amplitude of vibration degree, when certain node (being set to node A) ore deposit amplitude of vibration degree reaches threshold value, forms look-at-me;
Second step, node A gathers the temporal information in interruption moment as seismic wave initial time, and by network, seismic wave initial time is sent to host computer;
3rd step, seismic wave initial time and number are passed time interval by network with broadcast mode and send to each monitoring node by host computer;
4th step, the sampling data transmitting that number passes in time interval is given host computer by each monitoring node.
When ore deposit shake event occurs, monitoring device and host computer do not carry out a large amount of Monitoring Data to be transmitted, and network is in idle condition; When ore deposit shake event occurs, monitoring device and host computer just carry out Monitoring Data transmission, avoid the online of a large amount of gibberish.On the other hand, as long as the present invention has a monitoring node that shake event in ore deposit occurs, seismic wave initial time can be sent to each node master cpu with broadcast mode by host computer, the Monitoring Data of each node is sent to host computer by each master cpu, avoids the situation failing to report data because certain node that the uncertainty of electron device or the differing property of sensitivity level of sensor cause does not perceive ore deposit shake and occurs.
Due under different some positions, different periods, different environment, it is different for passing judgment on the standard whether shake event in ore deposit occurs, so each monitoring node predetermined threshold value is also different at different time.For this reason, each monitoring node threshold value described in the first step is drawn by the historical data statistics of host computer by this node and is arranged by Internet Transmission, is a dynamic value.
As shown in Figure 1, a kind of ore deposit shake monitoring device, comprises shock sensor, A/D converter, storage unit, master cpu, synchronization module and threshold comparator; Synchronization module receives the time synchronizing signal that time service device is sent, and with time service device time synchronized, forms sampling pulse and sends to A/D converter; A/D converter carries out A/D sampling to the signal that shock sensor sends under the effect of sampling pulse, and gives master cpu by sampling data transmitting, and the A/D sampled data received is temporary in storage unit by master cpu; Threshold comparator receives the voltage signal of shock sensor, forms look-at-me when this voltage signal exceedes predetermined threshold value; Synchronization module, under the effect of look-at-me, gathered for the first ore deposit shake time and sends to master cpu; Master cpu carries out exchanges data by network and host computer.
As shown in Figure 2, time service device arrange with mine on, by GPS or other equipment synchronous with national time service centre time, and provide unified time synchronization information to each monitoring point; Host computer is placed in distant place cloud service platform, shakes monitoring device be connected by internet with down-hole looped network and ore deposit, for the data that each monitoring node of unified process transmits.
As shown in Figure 1, described storage unit comprises primary memory, secondary storer and outgoing data storer, and the sampled data cycle staggering of A/D converter is stored in main memory unit and secondary storage unit; When master cpu receives the seismic wave initial time that host computer transmits, think that ore deposit shake event occurs, the data sent first will be needed to be kept in outgoing data storer.Like this, master cpu can send the data to host computer with slower network speed, avoids because network congestion causes loss of data.
When data acquiring frequency is higher, for avoiding refreshing too fast obliterated data, described storage unit can comprise several storeies: storer 1, storer 2 ... storer N etc.Like this, even if when ore deposit shake occurs, a large amount of Monitoring Data can be temporarily stored in these storeies, can not cause the situation of obliterated data because data are refreshed.
Master cpu is connected with threshold comparator, and host computer sends predetermined threshold value by master cpu to threshold comparator.
Described shock sensor is moving-coil type shock sensor, does not need power supply, can continually monitor mine's shock signal.
Cause loss of data for avoiding A/D converter and the transmission of master cpu data to block up, FIFO memory is set between A/D converter and master cpu; FIFO memory divides upper and lower two storage areas, and when upper storage area is filled with, A/D converter starts sampled data to be stored in lower storage area, and master cpu is taken the data of storage area away and emptied, and so hockets.
In order to avoid bus collision and raising read or write speed, described main memory unit and secondary storage unit adopt spi bus mode and I2C bus mode to carry out reading and writing data respectively.
Claims (8)
1. reduce a method for ore deposit shake monitoring system volume of transmitted data, by each monitoring node real-time sampling seismic data, and sampled data is stored in respective storage unit, it is characterized in that, further comprising the steps of:
The first step, each monitoring node Real-Time Monitoring ore deposit amplitude of vibration degree, when certain node (being set to node A) ore deposit amplitude of vibration degree reaches threshold value, forms look-at-me;
Second step, node A gathers the temporal information in interruption moment as seismic wave initial time, and by network, seismic wave initial time is sent to host computer;
3rd step, seismic wave initial time and number are passed time interval by network with broadcast mode and send to each monitoring node by host computer;
4th step, the sampling data transmitting that number passes in time interval is given host computer by each monitoring node.
2. the method for reduction ore deposit shake monitoring system volume of transmitted data according to claim 1, it is characterized in that, each monitoring node threshold value described in the first step is drawn by the historical data statistics of host computer by this node and is arranged by Internet Transmission, is a dynamic value.
3. an ore deposit shake monitoring device, is characterized in that, comprise shock sensor, A/D converter, storage unit, master cpu, synchronization module and threshold comparator; Synchronization module receives the time synchronizing signal that time service device is sent, and with time service device time synchronized, forms sampling pulse and sends to A/D converter; A/D converter carries out A/D sampling to the signal that shock sensor sends under the effect of sampling pulse, and gives master cpu by sampling data transmitting, and the A/D sampled data received is temporary in storage unit by master cpu; Threshold comparator receives the voltage signal of shock sensor, forms look-at-me when this voltage signal exceedes predetermined threshold value; Synchronization module, under the effect of look-at-me, gathered for the first ore deposit shake time and sends to master cpu; Master cpu carries out exchanges data by network and host computer.
4. shake monitoring device in ore deposit according to claim 3, it is characterized in that, described storage unit comprises primary memory, secondary storer and outgoing data storer.
5. the ore deposit shake monitoring device according to claim 3 or 4, it is characterized in that, host computer sends predetermined threshold value by master cpu to threshold comparator.
6. shake monitoring device in ore deposit according to claim 5, it is characterized in that, described shock sensor is moving-coil type shock sensor.
7. shake monitoring device in ore deposit according to claim 6, is characterized in that, arrange FIFO memory between A/D converter and master cpu.
8. shake monitoring device in ore deposit according to claim 7, it is characterized in that, described main memory unit and secondary storage unit adopt spi bus mode and I2C bus mode to carry out reading and writing data respectively.
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