CN201047741Y - Blasting vibrating monitoring data capture equipment - Google Patents

Abstract

The utility model relates to a blasting monitoring data collection equipment which is capable of remotely controlling all monitoring sites to synchronously carry out data collection and completely record vibration waves by means of wireless communication. A collection and distribution equipment structure is adopted, wherein a data collector is arranged at each monitoring site, and a plurality of data collectors are controlled by a wireless data transmission module to collect data simultaneously before the blasting is carried out; a flushbonding calculation technique is adopted by the data collector, wherein an intricate programmable logical apparatus is used for controlling each channel to collect data synchronously and to write the data into a first-in and first-out data memory; the time signals of a global positioning system satellite receiver are read off and annexed on the vibration data by a micro processor through a serial bus, and the vibration data are stored into a movable data memory through a general serial bus. The utility model is characterized in that data collection can begin to be carried out within a second before a blasting; the synchronous precision of data collection at an arbitrary plurality of monitoring sites can reach to 1 m s; meanwhile, the safety of operation personnel can be guaranteed. The utility model is especially suitable for collecting the data of the blasting vibration monitoring.

Description

The Blast Vibration Monitoring data acquisition equipment

Affiliated technical field:

The utility model relates to a kind of Blast Vibration Monitoring data acquisition equipment, especially can carry out data acquisition, complete documentation waveform data collecting device synchronously with all monitoring points of communication Long-distance Control.

Background technology:

When carrying out Blast Vibration Monitoring, need in the scope that vibration involved that explosion produces, arrange a plurality of monitoring points.In order to understand the characteristic that vibration wave is propagated, these monitoring points are image data synchronously.Waveform for test vibration, necessary high speed acquisition data, this will gather mass data at short notice, therefore not only bulk data storage device will be arranged, and begin data acquisition in the time that will before explosion, lack as far as possible, with the data space that avoids waste.The waveform of record will have the precise time scale, is convenient to search the residing moment of various amplitude.In order to guarantee safety, and to operate the data collecting device away from blow-up point.

Use traditional magnetic tape recorder and light oscillograph to do the requirement that waveform recording equipment can not satisfy Blast Vibration Monitoring basically; The digital recorder that the late 20th century enters the Blast Vibration Monitoring field has solved the stationary problem of each channel sample of single device, but multiple devices sample-synchronous precision is also lower, it is not enough to use the device interior clock to do sampling data time scale precision, particularly be easy to because of external environmental interference causes false triggering, can lose the important information of vibration wave head simultaneously with simulation triggering mode control vibration signals collecting.

Summary of the invention:

For overcome existing Blast Vibration Monitoring low with data acquisition equipment sample-synchronous precision, trigger insecure problem, the utility model provides a kind of novel Blast Vibration Monitoring data acquisition equipment, make the synchronization accuracy of any a plurality of monitoring points image data reach 1ms, Wave data that can the complete documentation blasting vibration, make full use of data space, and can operate away from the explosion deathtrap.

The technical scheme that its technical problem that solves the utility model adopts is: adopt the collecting and distributing type device structure, each Blast Vibration Monitoring point is placed a data acquisition unit, with a notebook computer, before beginning, explosion sends the data acquisition instruction to each data acquisition unit by wireless data transmission module.According to the speed of radio propagation, therefore the time error that each data acquisition unit is received the instruction of beginning image data in the 800m scope can guarantee to carry out synchronously data acquisition less than 1ms.The data of gathering are the temporal information of additional global positioning system (GPS, Global Position System) satellite clock all, stores mobile data memory into.Read the data of each data storage after data acquisition is finished by software,, can obtain the waveform of any time blasting vibration and the information of propagating and distributing thereof according to the time mark alignment.

Data acquisition unit adopts embedded computing technique, and model is that microprocessor and the ancillary equipment of AT91RM9200 is integrated on the printed circuit board (PCB).Model is the modulus conversion chip of AD7655AST and the first in first out (FIFO that model is IDT72V235L15PF, First Input First Output) memory chip links to each other, model is the CPLD (CPLD of EPM7256AETC144, Complex ProgramableLogic Device) links to each other with fifo chip with modulus conversion chip respectively, carry out data acquisition control.The microprocessor log-on data collection that links to each other with CPLD; Link to each other with fifo chip and to read the data of collection.Model is that the wireless data transmission module of SRWF-501 links to each other with microprocessor by universal serial bus, is used to receive the data acquisition sign on.Model is that the gps satellite receiver of LASSEN iQ is transferred to microprocessor with time reference signal by universal serial bus.Mobile data storage device is articulated in the data acquisition unit outside by USB.

The beneficial effects of the utility model are that the employing wireless data transfer module sends the data acquisition control instruction, has avoided the on-the-spot difficulty that connects holding wire of explosion; Can guarantee that the moment of each monitoring point before explosion begins begin data acquisition simultaneously, neither can lose the vibration wave header, can not gather redundant data again; The data acquisition unit quantity of forming this equipment is unrestricted; Sampled data adds the time scale with gps satellite signal, markers precision height; Adopt the plug-in large capacity data memory of USB, read or write speed is fast, and access data is convenient.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an overall structure schematic diagram of the present utility model.

1. data acquisition units among the figure, 2. data acquisition unit, 3. data acquisition unit, 4. wireless communication module, 5. notebook computer.

Fig. 2 is a separate unit data acquisition unit structure principle chart of the present utility model.

1. modulus conversion chips among the figure, 2. modulus conversion chip, 3. control line, 4. control line, 5. control line, 6. control line, 7.CPLD chip, 8. control line, 9.GPS receiver, 10. time signal line, 11. microprocessors, 12. mobile data memories, 13. data wire, 14. order wires, 15. wireless data transmission modules, 16. data wires, 17. data wire, 18.FIFO chip, 19.FIFO chip, 20. data wire, 21. data wires, 22. printed circuit board (PCB)s.

The specific embodiment:

The needs that the Blast Vibration Monitoring data acquisition equipment is layouted according to monitoring are formed monitoring net by many data acquisition units.Notebook computer sends the data acquisition instruction by wireless data transmission module to all collectors.

Constantly intercept the information of wireless data transmission module after each data acquisition unit start, in case receive the instruction of beginning image data, microprocessor just begins data acquisition by CPLD chip enable modulus conversion chip.CPLD chip controls cope and drag pattern number conversion chip carries out data acquisition synchronously, and modulus conversion chip is that binary channels is synchronous, 16 bit resolutions, 100kS/s sample rate.4 synchronous image data of passage can connect 13 to vibrating sensor and 1 sound transducer.The data of gathering under CPLD control are write into the first in first out data storage.Microprocessor reads data by push-up storage, reads temporal information from the GPS receiver, appends on the vibration data, and the data that will have time ruler then deposit mobile data memory in by the USB of V2.0 standard.Data acquisition finishes the back is obtained the explosion monitoring to signal analysis software by mobile data memory output data result.

Claims (2)

1. A blasting vibration monitoring data acquisition device adopts embedded computing technology and is composed of a microprocessor, an analog-to-digital conversion chip, a data memory, a satellite receiver, a wireless data transmission module and an interface circuit, and is characterized in that: On the board, the analog-to-digital conversion chip is connected to the first-in-first-out memory chip, and the complex programmable logic device is connected to the analog-to-digital conversion chip and the first-in-first-out memory chip respectively, and the first-in-first-out memory chip, wireless data transmission module, and GPS satellite signal The receiving module and the mobile data memory are respectively connected with the microprocessor. 2. The blasting vibration monitoring data acquisition device according to claim 1, characterized in that: the wireless data transmission module is connected to the microprocessor through a serial communication bus.

Images