CN203299399U

CN203299399U - Automatic recording device for continuous vibration signals in underground coal mine

Info

Publication number: CN203299399U
Application number: CN2013202762496U
Authority: CN
Inventors: 吴海; 江浩; 程建远; 张庆庆
Original assignee: Xian Research Institute Co Ltd of CCTEG
Current assignee: Xian Research Institute Co Ltd of CCTEG
Priority date: 2013-05-20
Filing date: 2013-05-20
Publication date: 2013-11-20
Anticipated expiration: 2023-05-20

Abstract

The utility model belongs to the technical field of geophysical exploration and particularly relates to an automatic recording device for continuous vibration signals in an underground coal mine. During the development of the seismic exploration and the disaster monitoring in an underground coal mine, people need to record seismic waves in multiple directions within a large range, while overcoming underground complicated conditions. Therefore, the acquisition of seismic waves through the large-scale wired connection mode is not practical. According to the technical scheme of the utility model, the automatic recording device for continuous vibration signals in an underground coal mine comprises a power supply management module. The power supply management module is connected with a central control unit. The central control unit is connected in parallel with a signal acquisition module, a data storage module, a clock synchronization module, a network communication module and a triggering control module. The signal acquisition module is connected with an acquisition passage and the acquisition passage is connected with a signal input module. The clock synchronization module is connected with a GPS timing module. The automatic recording device has the advantages of high precision, low noise and low power consumption.

Description

A kind of for continuous shaking signal self-recording unit under coal mine

Technical field:

The utility model belongs to the geophysical exploration technology field, is specifically related to a kind of for continuous shaking signal self-recording unit under coal mine.

Background technology:

Under coal mine, carry out slot wave detection, two dimension or 3-d seismic exploration and micro seismic monitoring etc., become the study hotspot of the meticulous detection of tectonic structure under coal mine.Under coal mine, arrange seismic observation system, by observation artificial excitation's (blow out, hammering etc.) or the shock wave that is caused by equipment such as development machine, coalcutter, realization, to architectonic location, detection, is the effective way of prevention coal mining geology disaster, raising production efficiency.In down-hole, carry out seismic prospecting and disaster monitoring work, need seismic record multi-faceted, on a large scale, and will overcome down-hole complex environment condition, the seismic acquisition of therefore extensive wired connection is unrealistic.The appliance requires that is suitable for seismic survey under coal mine solves following problem: (1) seismograph can work alone, and can seismologic record separately is strict synchronous on time shaft; (2) for adapting to long-time observation, appliance requires is large storage space and suitable electric power management mechanism enough; (3) because observation station is many, the instrument quantity that forms a complete recording geometry is larger, requires equipment necessary compact, light, economical; (4) after data record, can carry out merging, the management of data, supporting software need have powerful seismologic record processing capacity.

Therefore, under coal mine, the self registering device of continuous shaking signal is basis and the prerequisite of carrying out seismic prospecting and disaster monitoring work in down-hole.

Still be not adapted at present the instrument system that extensive earthquake data acquisition is carried out in down-hole, the equipment that especially can carry out the long-time continuous monitoring both at home and abroad.

The utility model content:

The utility model is in order to solve the weak point in the above-mentioned background technology, provide a kind of for continuous shaking signal self-recording unit under coal mine, it uses the mode of precise synchronization, realize the separation physically of each observation station of seismic acquisition configuration, guarantee simultaneously the unitarity of Liao Ge road earthquake record, the data of acquisition can be for borehole seismic exploration and monitoring.

for achieving the above object, the technical solution adopted in the utility model is: a kind of for continuous shaking signal self-recording unit under coal mine, comprise power management module, it is characterized in that: on described power management module, be connected with central control unit, on central control unit, be parallel with signal acquisition module, data memory module, clock synchronization module, network communication module and trigger control module, on described signal acquisition module, be connected with acquisition channel, on acquisition channel, be connected with signal input module, on described clock synchronization module, be connected with GPS to the time module.

Described acquisition channel is divided into acquisition channel 1, acquisition channel 2 and acquisition channel 3.

The model of described central control unit is ARM9.

Compared with prior art, the advantage and the effect that the utlity model has are as follows:

1) based on without cable, certainly remembering the explosion-proof seismic signal acquisition station of formula, thoroughly broken away from large line loaded down with trivial details in the seismic prospecting work progress, the technology such as the large capacity storage of employing and low-power consumption, realized for a long time from remembering the formula signals collecting.

2) utilize gps signal and high precision clock chip, binding time synchroballistic algorithm, solved the time synchronization problem between each acquisition station.

3) based on the collection of embedded Linux system with control the realization of software, improved stability, real-time, the reliability of system, can effectively prevent the destruction to instrument system such as virus.

4) utilize the embedded software control technology, in conjunction with technology such as data redundancy verification backups, realize the Real Time Monitoring to instrument work on the spot state, guarantee the quality of instrument image data.

The utlity model has the function of high precision, low noise, low-power consumption.

The accompanying drawing explanation:

Fig. 1 is structured flowchart of the present utility model;

Fig. 2 is power management module circuit diagram of the present utility model;

Fig. 3 is central control unit circuit diagram of the present utility model;

Fig. 4 is signal acquisition module circuit diagram of the present utility model;

Fig. 5 is clock synchronization module circuit diagram of the present utility model.

Description of symbols: 1-power management module, 2-central control unit, 3-signal acquisition module, 4-data memory module, 5-clock synchronization module, 6-network communication module, 7-trigger control module, 8-signal input module, 9-GPS to the time module, 10-acquisition channel, 1,11-acquisition channel, 2,12-acquisition channel 3.

Embodiment:

Below in conjunction with embodiment and Figure of description, the utility model is elaborated.

Referring to Fig. 1: a kind of for continuous shaking signal self-recording unit under coal mine, comprise power management module 1, on described power management module 1, be connected with ARM9 central control unit 2, on ARM9 central control unit 2, be parallel with signal acquisition module 3, data memory module 4, clock synchronization module 5, network communication module 6 and trigger control module 7, on described signal acquisition module 3, be connected with acquisition channel, described acquisition channel is divided into acquisition channel 1, acquisition channel 2 and acquisition channel 3.On acquisition channel, be connected with signal input module 8, on described clock synchronization module 5, be connected with GPS to the time module 9.

Described clock synchronization module utilizes gps signal and high precision clock chip, and binding time synchroballistic algorithm is realized.

Data memory module adopts the embedded software control technology, in conjunction with data redundancy verification redundancy technique, realizes.

Fig. 2 urgees to be transformed into the analog-and digital-different operating voltage in 6 tunnels altogether by battery heat, and can realize the management of Dui Ge road power supply, to adapt to the low-power consumption demand of whole instrument.On power supply diagram, adopt isolation DC-DC and various LDO, and coordinated current limiting device able to programme to realize the control to the intrinsic safety parameter.

Fig. 3 is the central control circuit figure of instrument, adopts the PCB design of 4 layers, and Digital and analog partly lays respectively at the left and right sides of plank, and centre is row's isolating device.Core control panel and collection plate all adopt independent plug-in mounting structure, in the future can quick-replaceable when maintenance.

Participate in Fig. 4: the single channel acquisition chip that the CS3301+CS5373+CS5378 that adopts Cirrus Logic company to provide forms.These three chip seamless links, can complete the functions such as AD conversion, filtering, self-test.

Participate in Fig. 5: adopt the DS1390 real-time timepiece chip to carry out time management, in order to coordinate CPU (central processing unit), carry out the working time scheduling of device.What provide frequency source to clock is domestic design crystal oscillator, frequency 16.384MHz, and degree of stability reaches the E-9 magnitude.

The utility model adopts the thought of " distributed capture, separate, stored, centralized recovery ", realizes the centralized recovery of collection, storage and the data of mine seismic signal; System adopts 32 ARM chips, in conjunction with 24 A/D, SD card great capacity data storage etc., builds Embedded Hardware Platform, utilizes embedded OS, the functions such as completion system functional configuration, data acquisition and data record.The utility model can be realized the 3 channel signal collections of single station, between each instrument, utilizes gps signal and high precision clock chip to realize the precise synchronization of time.Before instrument is gone into the well, utilize the gps signal on ground to carry out time synchronized, system is according to the beat work of high precision clock, and binding time synchronously waits backoff algorithm that the time synchronization error of each instrument is controlled in the acceptable scope, makes the instrument of each platform independent can synchronous working.

This instrument will be supported " timing acquiring continuously " and " single triggering collection " two kinds of mode of operations, adopt powered battery and support the down-hole AC-powered.It will thoroughly get rid of traditional centralized seismographic main frame, large line in the past, save the loaded down with trivial details work such as wiring ,Cha road, and underground construction efficiency will improve greatly.Although this structure can not be supported the real-time playback of seismologic record, by modern high performance electron device and reliability design, the bad track rate can be controlled in the acceptable scope, have good application prospect.Instrument can be operated under monitoring pattern and trigger mode, and when instrument is under monitoring pattern, all instruments are by after the GPS precision time service, with identical time reference, the continuous recording seismic event, and, according to the criterion that designs in advance, realize the filtration to data; Under trigger mode, instrument is operated on identical time reference equally, but every the equal configure trigger of instrument unit that is to say that every instrument can be as a trigger.Under the manual activation pattern, will trigger line and be connected on a near instrument of shot point (shot point); After exciting, the utility model can record the triggered time, after as all data, gathering, extracts the foundation of single shot record.

Around the requirement to seismologic record of high precision seismic exploration and micro seismic monitoring, the utility model adopts present state-of-the-art MEMS vibration-sensing technology and electronic information technology, all technical is superior, with independent collection, focus on the method with time synchronized, overcome huge, the heavy problem of surface seismic instrument, from miniaturization, integrated angle, design, and meet the requirement of antiknock device.

Claims

1. one kind for continuous shaking signal self-recording unit under coal mine, comprise power management module (1), it is characterized in that: on described power management module (1), be connected with central control unit (2), on central control unit (2), be parallel with signal acquisition module (3), data memory module (4), clock synchronization module (5), network communication module (6) and trigger control module (7), described signal acquisition module is connected with acquisition channel on (3), on acquisition channel, be connected with signal input module (8), on described clock synchronization module (5), be connected with GPS to the time module (9).

2. a kind of for continuous shaking signal self-recording unit under coal mine according to claim 1, it is characterized in that: described acquisition channel is divided into acquisition channel 1(10), acquisition channel 2(11) and acquisition channel 3(12).

3. a kind of for continuous shaking signal self-recording unit under coal mine according to claim 1, it is characterized in that: the model of described central control unit (2) is ARM9.