CN103454687A - Three-dimensional electrical resistivity data measurement network system and addressing method thereof - Google Patents
Three-dimensional electrical resistivity data measurement network system and addressing method thereof Download PDFInfo
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- CN103454687A CN103454687A CN2013104117838A CN201310411783A CN103454687A CN 103454687 A CN103454687 A CN 103454687A CN 2013104117838 A CN2013104117838 A CN 2013104117838A CN 201310411783 A CN201310411783 A CN 201310411783A CN 103454687 A CN103454687 A CN 103454687A
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Abstract
The invention provides a three-dimensional electrical resistivity data measurement network system. Share-based data acquisition units of a main control computer are distributed in rows with different geographical positions, data acquisition devices are distributed in each row according to the measurement range, each data acquisition device is connected with 16 electrode switching devices, all the data acquisition devices and the main control computer form a primary CAN bus network through a CAN bus, and one data acquisition device and the 16 connected electrode switching devices form a secondary CAN bus network through the CAN bus. Simultaneous parallel acquisition of data is completed according to the CAN bus networks and chip technology, and after the main control computer sends an acquisition command, data of all measuring points are synchronously and simultaneously acquired; when three-dimensional electrical resistivity data are acquired, automatic addressing and locating of the data acquisition devices and automatic addressing and locating of the electrode switching devices are completed before the positions of measured data within a measuring range are measured, and the three-dimensional electrical resistivity data measurement network system has the advantages of being high in acquisition speed, stable in performance, and easy to maintain.
Description
Technical field
The invention belongs to the geophysical exploration technology field, is the D.C. method technology be applied in resource and environment exploration engineering field, relates to a kind of 3 D resistivity DATA REASONING network system and addressing method thereof.
Background technology
The research work of resistivity prospecting starts from earlier 1800s.Along with the reach of science with look for the needs in ore deposit, the theoretical and instrument of resistivity prospecting becomes better and approaching perfection day by day.Enter the beginning of this century, along with the application of large scale integrated circuit and the further raising of computing velocity, resistivity prospecting has started to the three-dimensional development, and high-density electric instrument developed into for the 4th generation from the first generation.Due to no matter be current serial metering system or parallel measurement mode, all adopted the RS485 bus to be controlled and data transmission, its longest distance only has 1200 meters scopes, and data rate is slower, and DTU (Data Transfer unit) is shared model, can only carry out serial acquisition data and conversion.
Summary of the invention
Purpose of the present invention just provides that a kind of picking rate is fast, 3 D resistivity DATA REASONING network system and the addressing method thereof of stable performance, easy care.
3 D resistivity DATA REASONING network system of the present invention, comprise main control computer, electric supply installation, data collector, the electrode switching device shifter, cable, be characterized in, the shared data acquisition unit of main control computer is distributed to the different row in position in ground, arrange one or more data collectors according to the every row of measurement range, each data collector connects 16 electrode switching device shifters, data collector adopts Cortex M3-LPC1788 microcontroller and 2 ADS1278 digital to analog converters, complete 16 electrode parallel data acquisitions, ADS1278 digital to analog converter inside is to comprise 8 24 parallel figure place weighted-voltage D/A converters, can save system cost like this, the complexity of minimizing system, all data collectors form one-level CAN bus network by CAN bus and main control computer, a data harvester forms secondary CAN bus network by CAN bus and 16 the electrode switching device shifters (4) that are connected, main control computer forms a CAN network by CAN bus and electric supply installation.
3 D resistivity DATA REASONING network system addressing method of the present invention is, data collector and electrode switching device shifter are all to pass through serial mode when starting to address, order is from the near to the remote addressed one by one and is located, by gating, export with selected input effectively with invalid, device is addressed and locates, and described method comprises the steps:
Steps A: main control computer, data collector and electrode switching device shifter power on, and main control computer gating output signal is set to effectively, and it is invalid that the gating output signal of data collector and electrode switching device shifter is set to;
Step B: the quantity of main control computer setting data harvester, the quantity of electrode switching device shifter, send the addressing order;
Step C: the gating output of main control computer effectively, makes the selected input of the first order data collector be connected with it effective, carries out the addressing order, and first order data collector is addressed;
Step D: after the addressing of first order data collector, address addressing sign assignment is 1, mean to have addressed, the addressing command frame of receiving is processed, the quantity of the data collector of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the second level data collector be connected with it is effective, send new Frame to data collector, only have selected input effectively and device that address addressing value of statistical indicant is 0 could be carried out and addresses command frame, complete addressing;
Step e: the mode according to step D is addressed the data harvester one by one, until the quantity of data collector is, means that all data collector addressings are complete at 0 o'clock, sends acknowledgement frame to main control computer;
Step F: main control computer sends the addressing command frame to the electrode switching device shifter to all data collectors after receiving that data collector addresses complete confirmation information;
Step G: after each data collector is received the addressing command frame to the electrode switching device shifter, make the gating output of the cable that is connected with oneself effectively, make the selected input of electrode switching device shifter of the row first order effective, data collector sends the addressing command frame to the electrode switching device shifter, the electrode switching device shifter response addressing command frame of the first order, complete addressing;
Step H: after the electrode switching device shifter completes addressing, the quantity of the electrode switching device shifter of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the next stage electrode switching device shifter be connected with it is effective, sends new Frame to the electrode switching device shifter, the next stage electrode switching device shifter response addressing command frame be connected with it, complete addressing;
Step I: the mode according to step H is addressed the electrode switching device shifter one by one, until the quantity of electrode switching device shifter is, means that all electrode switching device shifter addressings are complete at 0 o'clock, sends acknowledgement frame to data collector;
Step J: after data collector receives that the electrode switching device shifter addresses complete acknowledgement frame, to main control computer sender electrode switching device shifter, address complete acknowledgement frame.
3 D resistivity DATA REASONING network system of the present invention and addressing method thereof, parallel acquisition when logical CAN bus network and chip technology complete data, after main frame sends acquisition, the data of all measurement points keep synchronously gathering simultaneously; During the collection of 3 D resistivity data, must know the position of transmitting electrode, the position of each measurement data in measurement range, the automatic addressing of data acquisition device and automatic addressing and the location of location and electrode switching device shifter before measuring, it has, and picking rate is fast, the characteristics of stable performance, easy care.
The accompanying drawing explanation
Fig. 1 is the system construction drawing of 3 D resistivity DATA REASONING network system of the present invention;
Fig. 2 is 3 D resistivity DATA REASONING data in network system harvester schematic diagram of the present invention;
Fig. 3 is the schematic diagram of electrode switching device shifter automatic addressing in 3 D resistivity DATA REASONING network system of the present invention.
Embodiment
With reference to Fig. 1, 3 D resistivity DATA REASONING network system of the present invention, comprise main control computer 1, data collector 3, electrode switching device shifter 4, electric supply installation 2, cable, require to arrange measurement point according to surveying, establish coordinate, then arrangement apparatus, every 16 electrodes be one group by the pitch arrangement set on a line, each electrode is connected with an electrode switching device shifter 4, 16 electrode switching device shifters 4 connect by cable 7, every 16 electrode switching device shifters 4 are one group, each group start to arrange a data harvester 3, data collector 3 is connected in series by cable 6, main control computer is arranged in to the true origin position to be connected by cable 6 with data harvester 3 of beginning of the first row, main control computer connects electric supply installation 2 by cable 5.
Shown in Fig. 2, a kind of automatic addressing method of data collector 3 of network system of 3 D resistivity DATA REASONING, concrete implementation step is as follows:
Step 1: main control computer 1, data collector 3 and electrode switching device shifter 4 power on, and main control computer 1 gating output signal is set to effectively, and it is invalid that the gating output signal of data collector 3 and electrode switching device shifter 4 is set to;
Step 2: the quantity of main control computer 1 setting data harvester 3, the quantity of electrode switching device shifter 4, send the addressing order;
Step 3: the gating output of main control computer 1 effectively, makes the selected input of the first order data collector 3 be connected with it effective, carries out the addressing order, and first order data collector 3 is addressed;
Step 4: after 3 addressings of first order data collector, address addressing sign assignment is 1, mean to have addressed, the addressing command frame of receiving is processed, the quantity of the data collector 3 of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the second level data collector 3 be connected with it is effective, send new Frame to data collector 3, only have selected input effectively and device that address addressing value of statistical indicant is 0 could be carried out and addresses command frame, complete addressing;
Step 5: the mode according to step 4 is addressed data harvester 3 one by one, until the quantity of data collector 3 is, means that 3 addressings of all data collectors are complete at 0 o'clock, sends acknowledgement frame to main control computer 1;
Step 6: main control computer 1 sends the addressing command frame to electrode switching device shifter 4 to all data collectors 3 after receiving the complete confirmation information of data collector 3 addressings.
Shown in Fig. 3, a kind of electrode switching device shifter 4 addressing methods of network system of 3 D resistivity DATA REASONING, concrete implementation step is as follows:
Step 1: after each data collector 3 is received the addressing command frame to electrode switching device shifter 4, make the gating output of the cable 7 that is connected with oneself effectively, also just make the selected input of electrode switching device shifter 4 of the row first order effective, data collector 3 sends the addressing command frame to electrode switching device shifter 4, the electrode switching device shifter 4 response addressing command frames of the first order, complete addressing;
Step 2: after electrode switching device shifter 4 completes addressing, the quantity of the electrode switching device shifter 4 of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the next stage electrode switching device shifter 4 be connected with it is effective, sends new Frame to electrode switching device shifter 4, the next stage electrode switching device shifter 4 response addressing command frames that are connected with it, complete addressing;
Step 3: the mode according to step 2 is addressed electrode switching device shifter 4 one by one, until the quantity of electrode switching device shifter 4 is, means that 4 addressings of all electrode switching device shifters are complete at 0 o'clock, sends acknowledgement frame to data collector 3;
Step 4: after data collector 3 is received the complete acknowledgement frame of electrode switching device shifter 4 addressing, to the complete acknowledgement frame of main control computer 1 sender electrode switching device shifter 4 addressing.
After system has completed data collector 3 and 4 addressings of electrode switching device shifter, main control computer sets measurement parameter, sends measuring command, starts to measure.
Claims (2)
1. a 3 D resistivity DATA REASONING network system, comprise main control computer (1), electric supply installation (2), data collector (3), electrode switching device shifter (4) and cable, it is characterized in that: the shared data acquisition unit of main control computer (1) is distributed to the different row in position in ground, arrange one or more data collectors (3) according to the every row of measurement range, each data collector (3) connects 16 electrode switching device shifters (4), data collector (3) completes 16 electrode parallel data acquisitions, all data collectors (3) form one-level CAN bus network by CAN bus and main control computer (1), a data harvester (3) forms secondary CAN bus network by CAN bus and 16 the electrode switching device shifters (4) that are connected, main control computer (1) forms a CAN network by CAN bus and electric supply installation (2).
2. a 3 D resistivity DATA REASONING network system addressing method, it is characterized in that: it comprises the following steps:
Steps A: main control computer (1), data collector (3) and electrode switching device shifter (4) power on, main control computer (1) gating output signal is set to effectively, and it is invalid that the gating output signal of data collector (3) and electrode switching device shifter (4) is set to;
Step B: the quantity of main control computer (1) setting data harvester (3), the quantity of electrode switching device shifter (4), send the addressing order;
Step C: the gating output of main control computer (1) effectively, makes the selected input of the first order data collector (3) be connected with it effective, carries out the addressing order, and first order data collector (3) is addressed;
Step D: after first order data collector (3) addressing, address addressing sign assignment is 1, mean to have addressed, the addressing command frame of receiving is processed, the quantity of the data collector (3) of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the second level data collector (3) be connected with it is effective, send new Frame to data collector (3), only have selected input effectively and the address addressing value of statistical indicant device that is 0 could carry out and address command frame, complete addressing,
Step e: the mode according to step D is addressed data harvester (3) one by one, until the quantity of data collector (3) is, means that all data collectors (3) address complete at 0 o'clock, sends acknowledgement frame to main control computer (1);
Step F: main control computer (1) sends the addressing command frame to electrode switching device shifter (4) to all data collectors (3) after receiving that data collector (3) addresses complete confirmation information;
Step G: after each data collector (3) is received the addressing command frame to electrode switching device shifter (4), make the gating output of the cable (7) that is connected with oneself effectively, also just make the selected input of electrode switching device shifter (4) of the row first order effective, data collector (3) sends the addressing command frame to electrode switching device shifter (4), electrode switching device shifter (4) the response addressing command frame of the first order, complete addressing;
Step H: after electrode switching device shifter (4) completes addressing, the quantity of the electrode switching device shifter (4) of addressing command frame is subtracted to 1, the address sequence number adds 1, be assembled into a new Frame, make gating output effectively, the selected input of the next stage electrode switching device shifter (4) be connected with it is effective, sends new Frame to electrode switching device shifter (4), next stage electrode switching device shifter (4) the response addressing command frame be connected with it, complete addressing;
Step I: the mode according to step H is addressed electrode switching device shifter (4) one by one, until the quantity of electrode switching device shifter (4) is 0 o'clock, mean that all electrode switching device shifters (4) address complete, send acknowledgement frame to data collector (3);
Step J: data collector (3) addresses complete acknowledgement frame to main control computer (1) sender electrode switching device shifter (4) after receiving that electrode switching device shifter (4) addresses complete acknowledgement frame.
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Cited By (4)
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| CN104360397A (en) * | 2014-12-09 | 2015-02-18 | 重庆地质仪器厂 | Automatic encoding method of three-dimensional resistivity imaging system |
| CN104808247A (en) * | 2015-05-11 | 2015-07-29 | 中煤邯郸特殊凿井有限公司 | Detection method of freezing effect |
| CN108063709A (en) * | 2017-11-30 | 2018-05-22 | 控福（上海）智能科技有限公司 | A kind of communication system to test module three-dimensional fix |
| CN108628232A (en) * | 2018-07-11 | 2018-10-09 | 汉能移动能源控股集团有限公司 | Coding controller, coding control system and coding method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104360397A (en) * | 2014-12-09 | 2015-02-18 | 重庆地质仪器厂 | Automatic encoding method of three-dimensional resistivity imaging system |
| CN104360397B (en) * | 2014-12-09 | 2017-05-24 | 重庆地质仪器厂 | Automatic encoding method of three-dimensional resistivity imaging system |
| CN104808247A (en) * | 2015-05-11 | 2015-07-29 | 中煤邯郸特殊凿井有限公司 | Detection method of freezing effect |
| CN108063709A (en) * | 2017-11-30 | 2018-05-22 | 控福（上海）智能科技有限公司 | A kind of communication system to test module three-dimensional fix |
| CN108628232A (en) * | 2018-07-11 | 2018-10-09 | 汉能移动能源控股集团有限公司 | Coding controller, coding control system and coding method |
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