CN207586439U - A kind of seismic prospecting instrument with negative delay - Google Patents
A kind of seismic prospecting instrument with negative delay Download PDFInfo
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- CN207586439U CN207586439U CN201721756925.4U CN201721756925U CN207586439U CN 207586439 U CN207586439 U CN 207586439U CN 201721756925 U CN201721756925 U CN 201721756925U CN 207586439 U CN207586439 U CN 207586439U
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Abstract
The utility model discloses a kind of seismic prospecting instrument with negative delay, include host computer, the master station being connect with host computer, the multiple acquisition stations being connected in series with master station；Triggering interface is provided on master station, triggering interface is connect with focus；Noise data buffer, seismic data buffer and data storage are connected on host computer.The utility model is by preserving the data for the previous period of epicenter excitation seismic wave, by the frame head different instructions data type for setting the effectively front and rear data frame of focus trigger signal, so that gatherer process is continuously uninterrupted, it ensure that the integrality of seismic record process, whole process is simple, and efficient and intelligent level is higher.
Description
Technical field
It is specifically a kind of that there is the seismic prospecting of negative delay the utility model is related to seismic detector electronic technology field
Instrument.
Background technology
An epicenter excitation seismic wave is needed during seismic exploration, seismic wave travels to detection by geologic structure
The seismic wave detected is converted into voltage signal and is transmitted to seismic instrument by device, wave detector, and seismic instrument is by voltage signal number
Word is simultaneously transmitted to acquisition and storage that host computer completes seismic data.
A pulse signal can be sent while epicenter excitation seismic wave to seismic survey system, represents that seismic wave has been sent out.
After seismic survey system receives pulse signal, then start to acquire seismic wave.The seismic wave of epicenter excitation is transmitted to from focus most
Near wave detector need a period of time, be set as T1, to focus to wave detector apart from directly proportional；Focus sends out pulse signal and is transmitted to
Seismic survey system arrives seismic detector and starts to acquire the time delays of seismic wave as T2 again, due to electric signal transmission speed in the cable
Quickly, influence of the cable length to T2 can be ignored, therefore T2 is related to focus and seismic survey system build-in attribute.
Under certain exploration operation environment, the distance of focus to wave detector is closely to so that T1 is less than T2, i.e., when seismic wave passes
Seismic detector does not start gathered data also when being delivered to wave detector, causes seismic waveform acquisition imperfect, influences exploration operation matter
Amount.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of seismic prospecting instrument with negative delay, solve by
In seismic wave reach wave detector time be less than trigger signal reach seismic detector and start acquire signal time and caused by
The incomplete problem of seismic wave signal acquisition.
The technical solution of the utility model is：
A kind of seismic prospecting instrument with negative delay includes host computer, the master station being connect with host computer and master
Multiple acquisition stations that control station is connected in series with；Triggering interface is provided on the master station, the triggering interface connects with focus
It connects；Noise data buffer, seismic data buffer and data storage are connected on the host computer.
The host computer is connected with master station by cable, and the master station is connected with neighbouring acquisition station by short cable
It connects, is connected between the acquisition station by big line, multiple sensors for gathered data are respectively connected on each big line.
The advantages of the utility model：
The utility model preserves the last period of epicenter excitation seismic wave by setting the negative delay parameter of earthquake data acquisition
The data of time, by the frame head different instructions data type for setting the effectively front and rear data frame of focus trigger signal so that acquisition
Process is continuously uninterrupted, ensure that the integrality of seismic record process, and whole process is simple, efficient and intelligent level compared with
It is high.
Description of the drawings
Fig. 1 is the structure chart of the utility model.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
A kind of seismic prospecting instrument with negative delay includes host computer 1, is connect by cable with host computer 1
Master station 2, the multiple acquisition stations 3 being connected in series with by short cable and master station 2；Triggering interface is provided on master station 2, triggering connects
Mouth is connect with focus 4；Noise data buffer 5, seismic data buffer 6 and data storage 7 are connected on host computer 1；It is more
It is connected between a acquisition station 3 by big line, multiple sensors 8 for gathered data is respectively connected on each big line.
A kind of collecting method of seismic prospecting instrument with negative delay, has specifically included following steps：
（1）, data acquisition：Host computer initializes first, then issues the acquisition parameter of configuration（Include sample rate, adopt
Sample data length, positive road range and negative delayed data length）With beginning acquisition instructions to master station, master station receives beginning
After acquisition instructions, beginning acquisition instructions are sequentially handed down to the acquisition station of multiple series connection, acquisition station receives beginning acquisition instructions
Afterwards, the data of acquisition are packaged framing, frame head is labeled as environmental noise data, and multiple acquisition stations are by the environmental noise data of acquisition
Master station is sent to, master station is sent to host computer, and environmental noise data are stored in noise data buffer by host computer；When
When focus starts earthquake-wave-exciting, focus sends trigger signal to master station, and master station sends ground to the acquisition station of multiple series connection
Data acquisition command is shaken, after acquisition station receives earthquake data acquisition order, the data of acquisition are packaged framing, frame head is labeled as
The seismic data of acquisition is sent to master station by seismic data, multiple acquisition stations, and master station is sent to host computer, host computer
Seismic data is stored in seismic data buffer；Last host computer is by the environmental noise data and seismic data of storage
Spliced according to sequencing is received, spliced data are stored in data storage, the seismic wave as this acquisition
Gathered data；
（2）, negative delay detection setting：Negative delayed data length is set as 0 by host computer, then according to step（1）It carries out
Pre-sampling is primary, observes collected waveform, if the waveform of acquisition is complete, does not need to carry out negative delay setting；If waveform is not
Completely, then it predicts the approximate size for losing waveform, increases by 100 points in the negative delayed data length of setting, as next pre-
The negative delayed data length of sampling, again according to step（1）Pre-sampling is carried out, change negative delayed data length repeatedly and is carried out pre-
Sampling, until collected seismic waveform is complete, delayed data length testing is born in so far completion.
Wherein, when the environmental noise data that host computer receives are more than the storage size of noise data buffer,
Then the environmental noise data received earliest are abandoned, then noise data buffer is written into the environmental noise data newly received；When
It when host computer receives seismic data, writes direct in seismic data buffer, until writing full, when earthquake data buffer
Memory space write it is full after, host computer, which then issues, stops acquisition instructions to master station, and master station stopping is by the earthquake wave number of acquisition
According to being sent to host computer.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case of the principle and spirit for not departing from the utility model, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (2)
1. a kind of seismic prospecting instrument with negative delay, it is characterised in that：Include host computer, the master being connect with host computer
Control station, the multiple acquisition stations being connected in series with master station；Triggering interface, the triggering interface are provided on the master station
It is connect with focus；Noise data buffer, seismic data buffer and data storage are connected on the host computer.
2. a kind of seismic prospecting instrument with negative delay according to claim 1, it is characterised in that：Described is upper
Machine is connected with master station by cable, and the master station is connect with neighbouring acquisition station by short cable, the acquisition station it
Between connected by big line, be respectively connected with multiple sensors for gathered data on each big line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756925.4U CN207586439U (en) | 2017-12-15 | 2017-12-15 | A kind of seismic prospecting instrument with negative delay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756925.4U CN207586439U (en) | 2017-12-15 | 2017-12-15 | A kind of seismic prospecting instrument with negative delay |
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| CN207586439U true CN207586439U (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843918A (en) * | 2017-12-15 | 2018-03-27 | 合肥国为电子有限公司 | A kind of seismic prospecting instrument and its collecting method with negative delay function |
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2017
- 2017-12-15 CN CN201721756925.4U patent/CN207586439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843918A (en) * | 2017-12-15 | 2018-03-27 | 合肥国为电子有限公司 | A kind of seismic prospecting instrument and its collecting method with negative delay function |
| CN107843918B (en) * | 2017-12-15 | 2024-01-26 | 合肥国为电子有限公司 | Seismic prospecting instrument with negative delay function and data acquisition method thereof |
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