CN2724019Y

CN2724019Y - Earthquake and land slide monitor system based on sound transmitting

Info

Publication number: CN2724019Y
Application number: CN2004200872740U
Authority: CN
Inventors: 程耕国; 周凤星; 童云
Original assignee: Wuhan University of Science and Engineering WUSE
Current assignee: Wuhan University of Science and Engineering WUSE; Wuhan University of Science and Technology WHUST
Priority date: 2004-08-13
Filing date: 2004-08-13
Publication date: 2005-09-07
Anticipated expiration: 2014-08-13

Abstract

The utility model belongs to a data acquisition and processing system based on sound emission. Each check point is provided with a three-dimensional vibration transducer [4] and a data processor [3] connected with the three-dimensional vibration transducer [4]. Each data processor [3] is connected with an industrial control computer [1] through a converting module [2]. The structure of the data processor [3] is that the input ends of variable element instrumentation amplifiers [7], [8] and [22] are correspondingly connected with the output ends of variable element filters [5], [6] and [23]. The output ends of the variable element instrumentation amplifiers [7], [8] and [22] are correspondingly connected with the input ends of sampling holders [9], [10] and [21] whose output ends are connected with the input end of a single chip microcomputer (SCM) [14] via a multi-way switch [11] and a 16 bit analogue-to-digital converter [12]. The SCM [14] is respectively connected with a clock SCM [13], a conversing chip [15] and a static memory [16]. The conversing chip [15] is connected with the industrial control computer [1] by which the accepted data is carried through the normalization process to perform early warning reporting in time.

Description

A kind of earthquake, landslide monitoring system based on acoustic emission

One, technical field

The utility model belongs to the data Collection ﹠ Processing System based on acoustic emission.Relate in particular to a kind of early warning system that is used for on-line monitoring earthquake source, landslide omen.

Two, background technology

Also do not use effectively the precursor data collection and the disposal system of monitoring landslide at present in China mine.In case around in the mine landslide or earthquake take place, with the safety in production in serious threat mine, even can cause great human casualty accident.Aspect earthquake pre-warning, a kind of disclosed the earthquake detection system of wireless telemetry technique " use " be patented technology (ZL97199034.4), and only be used for the detection of earthquake, and can not the landslide, mine be detected and early warning, and system complex, cost height.

Three, summary of the invention

Task of the present utility model provides a kind of data that can accurately gather and handle earthquake source and landslide omen, can send the early warning report in advance, protect property safety, avoid the earthquake and the landslide monitoring system of great human casualty accident.

For finishing above-mentioned task, the technical scheme that the utility model adopted is: this system is by a plurality of three-dimensional shock sensors and the data processor respectively corresponding connection identical with its quantity, and these data processors connect with industrial control computer through modular converter.

The structure of data processor is: the corresponding connection of output terminal of the input end of variable element instrument amplifier and variable element wave filter X, Y, Z, the corresponding connection of the output terminal of variable element instrument amplifier with the input end of sampling holder, the output terminal of sampling holder connects with the input end of single-chip microcomputer by multi-way switch, 16 analog to digital converters, single-chip microcomputer also respectively with clock single-chip microcomputer, conversion chip, static memory connection.

The output terminal of variable element instrument amplifier and the output terminal of single-chip microcomputer connect with the input end of comparer respectively, the D/A output of single-chip microcomputer is as the signalization of triggering level V size, the output of comparer with or the input of door link and realize or trigger, or the interruption of output and the single-chip microcomputer of door input links, and trigger pip is notified single-chip microcomputer in the mode of interruption.

The setting of triggering level V is set at 0%～100% by the number percent of range, the waveform of whole three road signals of synchronous recording, and every road is 10K sampled point to the maximum, and industrial control computer can be set by 10K, 5K, 2K, 1K, and default value is 5K.

The signal filtering of variable element wave filter is divided into no filtering, 5KHz, 2.5KHz, 2KHz, 1KHz, 500Hz.

The clock accuracy of clock single-chip microcomputer is 1Ms, comprises year, month, day, hour, min, second, millisecond, and industrial control computer is unified time service to each data processor.

Constitute a circulating sampling storage organization in the static memory, static memory is preserved the sample information of single-chip microcomputer input, when triggering level V arrives, the address of storage unit is a benchmark with this moment, push away the byte number of needed negative delay length correspondence forward, the sampled data of adding the back is a complete event data.

Owing to adopt above-mentioned technology, the utlity model has the data characteristic that accurately to gather, handle earthquake source and landslide omen.Can send the early warning report in advance, protection mine safety is avoided the generation of great human casualty accident.

Four, description of drawings

Fig. 1 is the system architecture schematic block diagram of a kind of data acquisition of the present utility model and processing;

Fig. 2 is the waveform character figure of reaction earthquake and landslide omen;

Fig. 3 is a data processor structural representation block diagram.

Five, embodiment

[embodiment] present embodiment as shown in Figure 1, in the radius 1.5Km scope on monitored ground, be provided with 8 check points, each check point is provided with a three-dimensional shock sensor [4] and joining with it data processor [3], and each data processor [3] connects with industrial control computer [1] through modular converter [2].

The structure of data processor [3] is as shown in Figure 3: the corresponding connection of output terminal of the input end of variable element instrument amplifier [7], [8], [22] and variable element wave filter [5], [6], [23], the signal filtering of variable element wave filter [5], [6], [23] is divided into no filtering, 5KHz, 2.5KHz, 2KHz, 1KHz, 500Hz.The corresponding connection of input end of the output terminal of variable element instrument amplifier [7], [8], [22] and sampling holder [9], [10], [21], the output terminal of sampling holder [9], [10], [21] connects with the input end of single-chip microcomputer [14] by multi-way switch [11], 16 analog to digital converters [12], and single-chip microcomputer [14] also connects with clock single-chip microcomputer [13], conversion chip [15], static memory [16] respectively.Wherein the clock accuracy of clock single-chip microcomputer [10] is 1Ms, comprises year, month, day, hour, min, second, millisecond, and industrial control computer [1] is to the unified time service of each data processor [3].

The waveform of reaction earthquake and landslide omen substantially as shown in Figure 2, different geological state P ripples is different with the amplitude of S ripple, has also determined size and the sampling length L of triggering level V.The setting of triggering level V is set at 0%～100% by the number percent of range, the waveform of whole three road signals of synchronous recording, and every road is 10K sampled point to the maximum, and industrial control computer [1] can be set by 10K, 5K, 2K, 1K, and default value is 5K.

The task of data processor [3] is that the earthquake that will detect, the precursor signal waveform of landslide are accurately sampled according to the requirement of sampling thheorem, and the data that will sample and handle are sent to host computer again.

When data processor [3] monitors triggering level V shown in Figure 2, think and come an incident.The output terminal of the output terminal of variable element instrument amplifier [7], [8], [22] and single-chip microcomputer [14] connects with the input end of comparer [20], [19], [18] respectively, the D/A output of single-chip microcomputer [14] is as the signalization of triggering level V size, the output of comparer [20], [19], [18] with or the input of door [17] link and realize or trigger, or the interruption of output and the single-chip microcomputer [14] of door [17] input links, and trigger pip is notified single-chip microcomputer [14] in the mode of interruption.

After data processor [3] collects an incident, host computer not necessarily just in time with this unit communication, or differ surely and this incident to be spread out of at once.Therefore, under the control of single-chip microcomputer [14], the current incident that collects is kept in the static memory [16], its buffer memory ability is 30 incidents, and data processor [3] can also continue collection event, is unlikely to miss thing followed incident.Data processor [3] respectively writes down 10 incidents to x, y, three directions of z, totally 30 incidents.The sampled data of each incident is the 20K byte.

Constitute a circulating sampling storage organization in the static memory [16], static memory [16] is preserved the sample information of single-chip microcomputer [14] input, when triggering level V arrives, the address of storage unit is a benchmark with this moment, push away the byte number of needed negative delay length correspondence forward, the sampled data of adding the back is a complete event data.

Industrial control computer in the present embodiment [1] is when providing various dissimilar control interfaces; control eight data processors [3] time system work in accordance with regulations; also will receive the data of coming and carry out normalized; in time make the early warning report; protection mine safety is avoided the generation of great human casualty accident.

Claims

1, a kind of earthquake, landslide monitoring system based on acoustic emission, it is characterized in that this system by a plurality of three-dimensional shock sensors [4] and data processor [3] the respectively corresponding connection identical with its quantity, these data processors [3] connect with industrial control computer [1] through modular converter [2].

2, earthquake based on acoustic emission according to claim 1, the landslide monitoring system, the structure that it is characterized in that described data processor [3] is, variable element instrument amplifier [7], [8], [22] input end and variable element wave filter [5], [6], [23] output terminal is corresponding to be connect, variable element instrument amplifier [7], [8], [22] output terminal and sampling holder [9], [10], [21] input end is corresponding to be connect, sampling holder [9], [10], [21] output terminal is by multi-way switch [11], the input end of 16 analog to digital converters [12] and single-chip microcomputer [14] connects, single-chip microcomputer [14] also respectively with clock single-chip microcomputer [13], conversion chip [15], static memory [16] connects.

3, earthquake based on acoustic emission according to claim 2, the landslide monitoring system, it is characterized in that described variable element instrument amplifier [7], [8], the output terminal of output terminal [22] and single-chip microcomputer [14] respectively with comparer [20], [19], [18] input end connects, the D/A output of single-chip microcomputer [14] is as the signalization of triggering level V size, comparer [20], [19], [18] output with or the input of door [17] link and realize or trigger, or the interruption of output and the single-chip microcomputer [14] of door [17] input links, and trigger pip is notified single-chip microcomputer [14] in the mode of interruption.

4, the earthquake based on acoustic emission according to claim 3, landslide monitoring system, the setting that it is characterized in that described triggering level V is set at 0%～100% by the number percent of range, the waveform of whole three road signals of synchronous recording, every road is 10K sampled point to the maximum, industrial control computer [1] can be set by 10K, 5K, 2K, 1K, and default value is 5K.

5, the earthquake based on acoustic emission according to claim 2, landslide monitoring system is characterized in that the signal filtering of described variable element wave filter [5], [6], [23] is divided into no filtering, 5KHz, 2.5KHz, 2KHz, 1KHz, 500Hz.

6, the earthquake based on acoustic emission according to claim 2, landslide monitoring instrument, the clock accuracy that it is characterized in that described clock single-chip microcomputer [10] is 1Ms, comprise year, month, day, hour, min, second, millisecond, industrial control computer [1] is to the unified time service of each data processor [3].

7, the earthquake based on acoustic emission according to claim 2, landslide monitoring system, it is characterized in that constituting in the described static memory [16] a circulating sampling storage organization, static memory [16] is preserved the sample information of single-chip microcomputer [14] input, when triggering level V arrives, the address of storage unit is a benchmark with this moment, push away the byte number of needed negative delay length correspondence forward, the sampled data of adding the back is a complete event data.