CN203632686U - Half-duplex communication circuit applied to oil well test system - Google Patents
Half-duplex communication circuit applied to oil well test system Download PDFInfo
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- CN203632686U CN203632686U CN201320771930.8U CN201320771930U CN203632686U CN 203632686 U CN203632686 U CN 203632686U CN 201320771930 U CN201320771930 U CN 201320771930U CN 203632686 U CN203632686 U CN 203632686U
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- chip microcomputer
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Abstract
The utility model provides a half-duplex communication circuit applied to an oil well test system, which comprises ground equipment, and a plurality of underground instruments. The ground equipment and the plurality of underground instruments are connected through cables. The ground equipment comprises a first voltage device used for supplying power to a ground communication system. The ground communication system comprises a first single-chip microcomputer used for sending a first pulse signal containing a measurement instruction to a first transmitting module. The first transmitting module is used for sending the first pulse signal to the plurality of underground instruments. A first receiving module is configured to receive test signals fed back by the underground instruments, and then transmit the test signals to the first single-chip microcomputer. The underground instruments comprise a second voltage device used for supplying power to an underground communication system. The underground communication system comprises a second receiving module used for receiving the first pulse signal and then transmitting the first pulse signal to a second single-chip microcomputer. The second single-chip microcomputer is configured to receive the first pulse signal and then transmit the address identification information and measurement data generated based on the first pulse signal to a second transmitting module. The second transmitting module is configured to transmit the address identification information and the measurement data the first receiving module through a cable.
Description
Technical field
The utility model is the communication technology about the exploration of a kind of down-hole, particularly, is about a kind of half-duplex communication circuit for oil well test system.
Background technology
At present, along with the development of logging technique, the means of obtaining down-hole information are more and more, and the parameter of test is also more and more.Existing well logging means are substantially all that instrument is transferred to test section, after test, by cable, data are sent to ground, to reach the object of Real-Time Monitoring shaft bottom situation, conventional single-core cable communications circuit as shown in Figure 1, to adopt downhole instrument to send earthward the simplex of data, in this simplex, ground installation can only receive the measurement data being sent by downhole instrument passively, can not initiatively select required measurement data, or between multiple different downhole instruments, switch as required.In the time that needs are monitored multiple parameters and multiple oil wells are tested, a large amount of pouring in of measurement data are easy to cause the overlong time of ground installation to data processing, affect operating efficiency.
Utility model content
The main purpose of the utility model embodiment is to provide a kind of half-duplex communication circuit for oil well test system, to realize single core half-duplex operation of the long distance in ground and down-hole.
To achieve these goals, the utility model embodiment provides a kind of half-duplex communication circuit for oil well test system, described half-duplex communication circuit comprises: ground installation and multiple downhole instrument, and described ground installation is connected by cable with described multiple downhole instruments; Described ground installation comprises: the first voltage device, be connected with Ground Communication System, and described the first voltage device is given described Ground Communication System power supply; Described Ground Communication System comprises: the first receiver module, the first single-chip microcomputer, the first sending module, and described the first single-chip microcomputer sends and comprises the first pulse signal of measuring instruction to described the first sending module; Described the first sending module sends to one of described multiple downhole instruments by described the first pulse signal by described cable; Described the first receiver module receives the test signal of described downhole instrument feedback by cable, and described test signal is sent to described the first single-chip microcomputer; Described downhole instrument comprises: second voltage device, be connected with underground communica tion system, and described second voltage device is given described underground communica tion system power supply; Described underground communica tion system comprises: the second receiver module, second singlechip, the second sending module, and described the second receiver module receives described the first pulse signal, and sends to described second singlechip; Described second singlechip receives described the first pulse signal, and the measurement data generating by Address Recognition information and by described the first pulse signal sends to described the second sending module; Described the second sending module sends to described the first receiver module by described Address Recognition information and measurement data by described cable.
In one embodiment, above-mentioned half-duplex communication circuit also comprises: supply unit, is connected with described ground installation and multiple downhole instrument by described cable.
In one embodiment, above-mentioned the first voltage device and second voltage device comprise respectively: diode 1N4944, is connected with the first electric capacity, the second electric capacity, the 3rd electric capacity and voltage transitions chip LM2950 respectively through a resistance.
In one embodiment, the first above-mentioned single-chip microcomputer and second singlechip are single-chip microcomputer PIC16F876A.
In one embodiment, the first above-mentioned sending module comprises: metal-oxide-semiconductor IRFF430, the first pin of described metal-oxide-semiconductor IRFF430 is connected with described single-chip microcomputer PIC16F876A, and be connected with the second pin and the ground of described metal-oxide-semiconductor IRFF430 by a resistance, the 3rd pin of described metal-oxide-semiconductor IRFF430 is connected with described cable through another resistance and another diode 1N4944.
Further, the first above-mentioned receiver module comprises: comparator lm393 and two monostable multi-frequency generator 74VHC221.
In one embodiment, the second above-mentioned sending module comprises: metal-oxide-semiconductor IRFF430, the first pin of described metal-oxide-semiconductor IRFF430 is connected with described single-chip microcomputer PIC16F876A, and be connected with the second pin and the ground of described metal-oxide-semiconductor IRFF430 by a resistance, the 3rd pin of described metal-oxide-semiconductor IRFF430 is connected with described cable through another resistance and another diode 1N4944.
Further, the second above-mentioned receiver module comprises: comparator lm393 and two monostable multi-frequency generator 74VHC221.
The beneficial effects of the utility model are, realize the half-duplex operation of ground installation and downhole instrument, in the time monitoring multiple parameters and multiple oil wells are tested, simplify whole communication and data transmission procedure, have improved the efficiency of monitoring.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the simplex communication circuit of downhole instrument of the prior art and ground installation;
Fig. 2 is according to the structural representation of the half-duplex communication circuit of the utility model embodiment;
Fig. 3 is according to the first single-chip microcomputer of the utility model embodiment and the structural representation of second singlechip;
Fig. 4 is according to the structural representation of the first voltage device of the utility model embodiment and second voltage device;
Fig. 5 is according to the structural representation of the first sending module of the utility model embodiment and the second sending module;
Fig. 6 is according to the structural representation of the first receiver module of the utility model embodiment and the second receiver module.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of half-duplex communication circuit for oil well test system.Below in conjunction with accompanying drawing, the utility model is elaborated.
Embodiment mono-
The utility model embodiment provides a kind of half-duplex communication circuit for oil well test system, Fig. 2 is according to the structural representation of the half-duplex communication circuit of the utility model embodiment, as shown in Figure 2, this half-duplex communication circuit comprises: ground installation 1 and multiple downhole instrument 2, this ground installation 1 is connected and (is figure 2 illustrates three downhole instruments 2 by cable 3 with multiple downhole instruments 2, but this is only example effect, not in order to limit the quantity of downhole instrument, in actual applications, one or more downhole instruments can be set as required).
This ground installation 1 comprises: the first voltage device 4 and Ground Communication System 5, this first voltage device 4 is connected with Ground Communication System 5, power to this Ground Communication System 5.
As shown in Figure 2, Ground Communication System 5 comprises: the first receiver module 51, the first single-chip microcomputer 52 and the first sending module 53, the first single-chip microcomputer 52 sends the first pulse signal to the first sending module 53, in this first pulse signal, include measurement instruction, carry out underground survey and generate measurement data in order to one of them (hereinafter referred to as the current downhole instrument 2) of indicating multiple downhole instruments 2; One end of the first sending module 53 is connected with the first single-chip microcomputer 52, the other end is connected with cable 3, receiving after the first pulse signal, the first pulse signal is converted to the first return-to-bias code of easy transmission by the first sending module 53, and (this first return-to-bias code essence is still for pulse signal, just for ease of transmission, be converted into return-to-bias code form by the first sending module 53), and send to current downhole instrument 2 by cable 3, thereby give by the measurement command in this first pulse signal the current downhole instrument 2 of receiving this first return-to-bias code.
Shown in Fig. 2, downhole instrument 2 comprises: second voltage device 6 and underground communica tion system 7, this second voltage device 6 is connected with underground communica tion system 7, power to this underground communica tion system 7.This underground communica tion system 7 comprises: the second receiver module 71, second singlechip 72 and the second sending module 73.The second receiver module 71 is connected with cable 3, to receive the first return-to-bias code being sent through cable 3 by ground installation 1, this the first return-to-bias code is converted to discernible the second NRZ of single-chip microcomputer by the second receiver module 71, and (this second NRZ essence is still pulse signal, just for single-chip microcomputer can be identified, be converted into the form of NRZ by the second receiver module 71), and send to second singlechip 72; Second singlechip 72 receives this second NRZ, carries out underground survey, and gather corresponding measurement data in current downhole instrument 2 for the device of measuring according to the measurement instruction of this second NRZ.In the utility model embodiment, in this downhole instrument 2, can be the existing device for subsurface measuring in this area for the device of measuring, for example: CCL magnetic orientator, Natural Gamma Ray Tool, fluid density instrument, Instrument for Pressure, thermometer, water holdup tool, flow instrument etc., but the utility model is not as limit.Second singlechip 72 obtains the above-mentioned measurement data gathering for the device of measuring, and the Address Recognition information of this measurement data and current downhole instrument 2 is sent to the second sending module 73; The measurement data that the second sending module 73 sends second singlechip 72 and the Address Recognition information of current downhole instrument 2 are converted to the second return-to-bias code that is easy to transmission, and send to ground installation 1 by cable 3.
At ground installation 1 end, when being fed back to after the second return-to-bias code by current downhole instrument 2, the first receiver module 51 of this ground installation 1 receives this second return-to-bias code by cable 3, this second return-to-bias code is converted to discernible the first NRZ of single-chip microcomputer, and sends to the first single-chip microcomputer 52.Since then, just completed the communication process that carries out data interaction between ground installation 1 and current downhole instrument 2, due in this process, between ground installation 1 and current downhole instrument 2, pass through both sides' the Handshake Protocol control send and receive of data pulse signal each other, in the time that one end sends data, the other end can not send data, can only receive data.Just realized thus the uni-core bidirectional list duplex communication between ground installation and downhole instrument.
And receive after the second return-to-bias code that current downhole instrument 2 feeds back when the first single-chip microcomputer 52 of ground installation 1, according to current specifically which downhole instrument 2 measured of the Address Recognition acquisition of information in this second return-to-bias code, and in the time of upper once transmission measurement instruction, be switched to another downhole instrument different from current downhole instrument 2, when having determined next downhole instrument and having sent to this downhole instrument after the pulse signal that comprises new measurement instruction by the first sending module 53, for the process of processing and transmission or the reception of pulse signal, identical for the processing of pulse signal and the process of transmission or reception with between ground installation 1 as described above and current downhole instrument 2, do not repeat them here.
In actual applications, above-mentioned the first single-chip microcomputer 52 and second singlechip 72 can be selected existing single-chip microcomputer PIC16F876A, the structure of this single-chip microcomputer as shown in Figure 3, in figure, U2 is single-chip microcomputer PIC16F876A, its pin 9, 10 connect 6MHZ crystal oscillator and 22pF electric capacity, pin 1 connects voltage VCC by 10K resistance R 2, pin 8, 19 ground connection, pin 20 connects VCC, and connect capacitor C 6, C7, pin 21 is for receiving signal pins, be connected with the first receiver module 51 or the second receiver module 71, pin 22 is for sending pin, be connected with the first sending module 53 or the second sending module 73.In the utility model embodiment, the attainable function such as transmit and receive data known according to this single-chip microcomputer PIC16F876A, realizing the first single-chip microcomputer 52 sends and includes the first pulse signal of measuring instruction, the operation of the first NRZ that reception is sended over by the first receiver module 51 etc. to the first sending module 53; And realize second singlechip 72 and receive the second NRZ, obtain current downhole instrument 2 and carry out the measurement data of underground survey generation and the Address Recognition information of current downhole instrument 2, and send to the operation of first receiver module 51 etc.
In sum, by half-duplex communication circuit of the present utility model, by realizing the half-duplex operation of ground installation and downhole instrument, can between ground installation and multiple downhole instrument, switch and obtain corresponding measurement data, in the time monitoring multiple parameters and multiple oil wells tested, simplify whole communication and data transmission procedure, improved the efficiency of monitoring.
As shown in Figure 2, half-duplex communication circuit of the present utility model also comprises supply unit 8, and this supply unit 8 is connected with ground installation 1 and multiple downhole instrument 2 by cable 3, is whole half-duplex communication circuit power supply.
In a preferred embodiment, above-mentioned the first voltage device 4 and second voltage device 6 can be structures as shown in Figure 4, and in figure, D1 is diode 1N4944, after stube cable, voltage are introduced to voltage stabilizing didoe 1N5352 through R1.C1 is 0.1uF electric capacity, and C2 is 10uF electric capacity, and C3 is 10uF polar capacitor, and U1 is voltage transitions chip LM2950.The voltage of 15.0V connects after the pin 3 of U1, exports 5.0V voltage from pin 1, power supply is provided to Ground Communication System or underground communica tion system.
In a preferred embodiment, above-mentioned the first sending module 53 and the second sending module 73 can be structures as shown in Figure 5, in figure, M1 is metal-oxide-semiconductor IRFF430, and its pin 2 connects the pin 22 of the first single-chip microcomputer 52 or second singlechip 72, and is connected with pin 1 and ground by 100K resistance R 4.Pulse signal in communication process arrives cable 3 after pin 3 after resistance R 3 and diode 1N4944, then by cable 3, pulse signal is sent out.
In a preferred embodiment, above-mentioned the first receiver module 51 and the second receiver module 71 can be structures as shown in Figure 6, and C8 is 0.33uF electric capacity, and stube cable 3 is introduced pulse signal the pin 2 of comparator lm393.Resistance R 5 is connected with the pin 2 of comparator lm393, and connects 15.0V voltage, resistance R 6 and resistance R 7.Resistance R 6 and the pin 3 that is connected lm393 after resistance R 7 dividing potential drops, pin 4,5,6,7 ground connection, pin 1 is connected with pin 8 and VCC by 10K resistance R 8, and connects the two monostable multi-frequency generator 74VHC221 of U4.Pin 1 ground connection of U4, pin 3 meets high level VCC.Pin 14 is connected with the electric capacity of 1nF indirectly with 15, and pin 15 is connected with VCC by 100K resistance R 9, and pin 13 is exported the discernible NRZ of single-chip microcomputer.
By the half-duplex communication circuit in above-described embodiment, can realize the half-duplex operation of ground installation and downhole instrument, thereby communicating by letter between ground installation and multiple downhole instrument automatically switched, and obtain corresponding measurement data, simplify whole communication and data transmission procedure when multiple oil wells are measured, thereby improved the efficiency of surveying work.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method can carry out the hardware that instruction is relevant by program and complete, this program can be stored in a computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; and be not used in limit protection range of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. for a half-duplex communication circuit for oil well test system, it is characterized in that, described half-duplex communication circuit comprises: ground installation and multiple downhole instrument, and described ground installation is connected by cable with described multiple downhole instruments;
Described ground installation comprises:
The first voltage device, is connected with Ground Communication System, and described the first voltage device is given described Ground Communication System power supply;
Described Ground Communication System comprises: the first receiver module, the first single-chip microcomputer and the first sending module,
Described the first single-chip microcomputer sends and comprises the first pulse signal of measuring instruction to described the first sending module; Described the first sending module sends to one of described multiple downhole instruments by described the first pulse signal by described cable; Described the first receiver module receives the test signal of described downhole instrument feedback by cable, and described test signal is sent to described the first single-chip microcomputer;
Described downhole instrument comprises:
Second voltage device, is connected with underground communica tion system, and described second voltage device is given described underground communica tion system power supply;
Described underground communica tion system comprises: the second receiver module, second singlechip and the second sending module,
Described the second receiver module receives described the first pulse signal, and sends to described second singlechip; Described second singlechip receives described the first pulse signal, and the measurement data generating by Address Recognition information and by described the first pulse signal sends to described the second sending module; Described the second sending module sends to described the first receiver module by described Address Recognition information and measurement data by described cable.
2. half-duplex communication circuit according to claim 1, is characterized in that, described half-duplex communication circuit also comprises: supply unit, is connected with described ground installation and multiple downhole instrument by described cable.
3. half-duplex communication circuit according to claim 2, it is characterized in that, described the first voltage device and second voltage device comprise respectively: diode 1N4944, is connected with the first electric capacity, the second electric capacity, the 3rd electric capacity and voltage transitions chip LM2950 respectively through a resistance.
4. half-duplex communication circuit according to claim 3, is characterized in that, described the first single-chip microcomputer and second singlechip are single-chip microcomputer PIC16F876A.
5. half-duplex communication circuit according to claim 4, is characterized in that, described the first sending module comprises:
Metal-oxide-semiconductor IRFF430, the first pin of described metal-oxide-semiconductor IRFF430 is connected with described single-chip microcomputer PIC16F876A, and be connected with the second pin and the ground of described metal-oxide-semiconductor IRFF430 by a resistance, the 3rd pin of described metal-oxide-semiconductor IRFF430 is connected with described cable through another resistance and another diode 1N4944.
6. half-duplex communication circuit according to claim 5, is characterized in that, described the first receiver module comprises: comparator lm393 and two monostable multi-frequency generator 74VHC221.
7. half-duplex communication circuit according to claim 4, is characterized in that, described the second sending module comprises:
Metal-oxide-semiconductor IRFF430, the first pin of described metal-oxide-semiconductor IRFF430 is connected with described single-chip microcomputer PIC16F876A, and be connected with the second pin and the ground of described metal-oxide-semiconductor IRFF430 by a resistance, the 3rd pin of described metal-oxide-semiconductor IRFF430 is connected with described cable through another resistance and another diode 1N4944.
8. half-duplex communication circuit according to claim 7, is characterized in that, described the second receiver module comprises: comparator lm393 and two monostable multi-frequency generator 74VHC221.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320771930.8U CN203632686U (en) | 2013-11-26 | 2013-11-26 | Half-duplex communication circuit applied to oil well test system |
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| CN201320771930.8U CN203632686U (en) | 2013-11-26 | 2013-11-26 | Half-duplex communication circuit applied to oil well test system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443116A (en) * | 2015-11-02 | 2016-03-30 | 贵州航天凯山石油仪器有限公司 | Method and circuit for data intercommunication of downhole device and ground |
| CN105626048A (en) * | 2016-03-25 | 2016-06-01 | 贵州天石能源科技有限公司 | Underground instrument multi-stage parallel-connection system used for oil well testing |
| CN106643900A (en) * | 2016-12-29 | 2017-05-10 | 中国石油天然气股份有限公司 | Multi-parameter testing device |
| CN111769932A (en) * | 2020-06-03 | 2020-10-13 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| CN112887057A (en) * | 2021-01-18 | 2021-06-01 | 北京港震科技股份有限公司 | Underground data processing device and system |
-
2013
- 2013-11-26 CN CN201320771930.8U patent/CN203632686U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443116A (en) * | 2015-11-02 | 2016-03-30 | 贵州航天凯山石油仪器有限公司 | Method and circuit for data intercommunication of downhole device and ground |
| CN105626048A (en) * | 2016-03-25 | 2016-06-01 | 贵州天石能源科技有限公司 | Underground instrument multi-stage parallel-connection system used for oil well testing |
| CN106643900A (en) * | 2016-12-29 | 2017-05-10 | 中国石油天然气股份有限公司 | Multi-parameter testing device |
| CN111769932A (en) * | 2020-06-03 | 2020-10-13 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| CN111769932B (en) * | 2020-06-03 | 2023-08-11 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| CN112887057A (en) * | 2021-01-18 | 2021-06-01 | 北京港震科技股份有限公司 | Underground data processing device and system |
| CN112887057B (en) * | 2021-01-18 | 2023-07-07 | 北京港震科技股份有限公司 | Underground data processing device and system |
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Granted publication date: 20140604 Termination date: 20211126 |