CN101328802B - Capillary pressure measuring device - Google Patents
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- CN101328802B CN101328802B CN2008101505050A CN200810150505A CN101328802B CN 101328802 B CN101328802 B CN 101328802B CN 2008101505050 A CN2008101505050 A CN 2008101505050A CN 200810150505 A CN200810150505 A CN 200810150505A CN 101328802 B CN101328802 B CN 101328802B
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Abstract
The invention provides a capillary tube pressure measuring device, comprising a singlechip system, a current-to-voltage circuit, an A/D conversion circuit, a signal processing system, a display circuit and a serial communication circuit, wherein the singlechip system controls the whole machine; the current-to-voltage circuit converts input pressure current signals into voltage signals; an input end of the A/D conversion circuit is connected with the current-to-voltage circuit and the singlechip system; a circuit of the signal processing system is connected with the singlechip system; an input end of the display circuit is connected with the singlechip system; and the serial communication circuit is connected with the singlechip system. The pressure measuring device adopts the singlechip system to accomplish the data acquisition of pressure and temperature; the signal processing system realizes complicated iterative algorithm, thereby improving the precision and execution efficiency of the system; a communication interface not only has the serial communication between the signal processing system and an external computer, but also has the data transmission between a singlechip and the display circuit. The pressure measuring device has the advantages of small volume, convenience for carrying, high pressure measuring precision, accurate and rapid measured data, real-time monitoring and display, etc., which can be used for monitoring the pressure in oil-gas wells.
Description
Technical field
The invention belongs to the manometric technique field, be specifically related to capillary pressure measuring device.
Background technology
The capillary pressure measuring technology is to be pressure transmission medium with nitrogen or inert gas, and down-hole pressure is delivered to ground, finishes the test of pressure on ground, according to corresponding mathematical algorithm, extrapolates the pressure at testing pressure down hole degree of depth place with institute's measuring pressure.
The pressure measurement principle of pressure test system with capillary adopts Pascal's theorem, and promptly the pressure of any point in the airtight container equates.The used capillary pressure measuring device of down-hole pressure monitoring is made up of underground structure and ground system.Underground structure comprises: well head passes through device, cable-passing packer passes through device, capillary tubing, pressure-transmission tube and capillary tube protector.Above ground portion is made up of nitrogen (or inert gas) source, nitrogen (or inert gas) booster pump, air compressor, safe purging system, pressure transmitter, computer, data acquisition control system.Data acquisition control system can be divided into again: pressure acquisition, temperature acquisition, control circuit, four parts of display circuit.When the pressure at testing pressure down hole point place acts on the interior gas column of pressure-transmission tube, by gas transfer pressure to well head, the capillary tube port at well head place connects pressure transmitter, pressure in the capillary tube is converted to the signal of telecommunication, and this signal is sent to data acquisition control system, in this system, show pressure data and the observed pressure data are handled, storage on the one hand is sent to computer on the one hand afterwards, does further processing after the playback.
Capillary pressure measuring device can be installed in the flowing well, also can be installed in the various machine-pumped oil wells, can finish various flow-after-flow tests and transient well test work, be applicable to the single-interval test and the zonal testing of straight well, inclined shaft, horizontal well and thick oil thermal extraction, the requirement of testing under the situation that the realization oil recovery does not stop production.But, two aspects are mainly concentrated in the research of capillary pressure measuring both at home and abroad: the Research on Calculation of (1) bottom pressure, as calculate nearly 13 kinds of the methods commonly used of bottom pressure, see the paper " Calculationof Bottom-Hole Pressure in Gas Wells " that SPE1676 is write by the KHALID AZIZ of Canadian; (2) capillary pressure curve is to the research of oilfield exploitation and hydrocarbon reservoir evaluation effect aspect.And it is less for the realization research of ground data acquisition control system.
Up to the present, oil field, Tarim Basin headquarter and Shengli Oil Field, this kind equipment of just introducing from 1994 mainly is the Pruett 7000 serial capillary pressure measuring devices of U.S. PRUETT company, and Dagang Oilfield is in the PS-60 type capillary tube down-hole pressure detection system of introduction in 2002.The just principle introduction of seeing from document, performance parameter and mounting means all do not provide the pressure acquisition and the treatment circuit on ground.Have only in the domestic patent one piece relevant with capillary pressure measuring, number of patent application 00235040.8, this patent has mainly been introduced a kind of continuous gas injection device that is used for the capillary pressure measuring in oil field, relate to the problem that nitrogen replenishes in the capillary tube, can be implemented in capillary tube continuous supplementation nitrogen in transferring process, but capillary pressure measuring does not relate in this patent, does not more relate to pressure data collection and control system.
Principle, composition and the mounting method of pressure test system with capillary of Pruett 7000 series of U.S. PRUETT company just introduced in " oil drilling technology " 1998 (the 20th volume) the 1st interim " pressure test system with capillary brief introduction " briefly.But do not provide the circuit of ground data collection and processing.
" examination of oil gas well surveying " (the 14th volume) the 1st interim " the capillary pressure measuring technology is in application of Dagang Oilfield " in 2005, composition, principle and the mounting method of the capillary tube down-hole pressure detection system of PS-60 type have been introduced, provided the technical indicator of system, and introduced the applicable cases of this system, but do not provide the pressure acquisition principle on ground equally and realize circuit at Dagang Oilfield.
" oil instrument " 2008 the 2nd interim " theoretical research of capillary tube oil well pressure measurement " mainly introduced the reckoning to bottom pressure of the principle of pressure test system with capillary and well head pressure, and this paper is not just mentioned the data acquisition on ground.
Disclose capillary pressure in the measurement rock sample among the U.S. Pat 2006/0116828A1, and analyzed degree of porosity and permeability, this patent and the pressure independent at the well logging end on stratum by capillary pressure curve.
The paper SPE1676 of Petroleum Engineer association has mainly introduced the mathematical method of being calculated bottom pressure by well head pressure.Provide a kind of author in the literary composition and thought easy calculating, recursive algorithm and realization flow figure that precision is high; Related to 13 kinds data processing method in the literary composition.But do not relate to the collection of well head pressure and handle the realization principle.
The paper SPE111465 of Petroleum Engineer association, introduced capillary technique and carried out testing pressure down hole and application in the Campos basin of Brazil, adopted the pressure under the capillary pressure measuring device monitor well in the article, describe the selection of structure composition, capillary tube and the pressure transmitter of capillary pressure measuring device, the analytic unit and the installation requirement of data in detail, the data of also downhole parameters of surveying with this device and additive method being obtained compare at last, conclusion be this device precision height, simple to operate, save time, save cost.But it is failed to provide data and obtains realization principle with analytic unit equally.
From the above mentioned, for capillary tube down-hole pressure detection system, what see from document is the principle introduction, does not provide the pressure acquisition and the treatment circuit on ground.In oil and natural gas production technique field, the urgent technical problem that solves of current needs provides a kind of device of monitor well downforce, this device transmits the pressure in shaft bottom by the gas in the capillary tube in the oil well, gathers and show the pressure of pressure measurement place in real time on ground.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of simple in structure, volume is little, easy to carry, pressure measurement precision height, the data of the surveying capillary pressure measuring device of accurately monitoring and showing rapidly, in real time.
Solving the problems of the technologies described above the technical scheme that is adopted is that it comprises: the SCM system that complete machine is controlled; The pressure to current signal of input is converted to the electric current commentaries on classics potential circuit of voltage signal; A/D change-over circuit, the input termination electric current of this circuit change potential circuit and are connected with SCM system; Signal processing system, this circuit is connected with SCM system; Display circuit, the input of this circuit connects SCM system; It also comprises serial communication circuit, and this circuit is connected with SCM system.
SCM system of the present invention is: 16 pin of integrated circuit U1A connect 1 pin of integrated circuit U5A by resistance R 5A, 11 pin connect 2 pin of integrated circuit U5A by resistance R 6A, 10 pin connect 3 pin of integrated circuit U5A by resistance R 7A, 15 pin connect 5 pin of integrated circuit U5A by resistance R 8A, 2 pin and 3 pin connect the oscillating circuit that is connected and composed by crystal oscillator Y1A and capacitor C 15A and capacitor C 16A, 13 pin connect an end and the ground connection of capacitor C 7A, 14 pin connect the other end and the power supply of capacitor C 7A, 1 pin and 4 pin connect an end and the ground of capacitor C 8A, 38 pin and 39 pin connect the other end and the power supply of capacitor C 8A, and 17 pin of integrated circuit U1A and 18 pin and 21 pin connect display circuit, 29 pin～36 pin are by the bus interface signal processing system, 22 pin～24 pin, 5 pin connect signal processing system.The model of above-mentioned integrated circuit U1A is that the model of MSP430F2272, integrated circuit U6A is that the model of MAX3232, integrated circuit U7A is YD711.
Signal processing system of the present invention is: the D8 end～D15 end of integrated circuit U4B is by the D8 end～D15 end of bus interface integrated circuit U1A, D0 end～D7 end is by the D0 end～D7 end of bus interface integrated circuit U2B and integrated circuit U3B, D16 end～D31 end is by the D16 end～D31 end of bus interface integrated circuit U1B, A0 end～A21 end is by the A0 end～A21 end of bus interface U1B, A0 end～A16 end is by the A0 end～A16 end of bus interface integrated circuit U2B and integrated circuit U3B, ground end ground connection, the power supply termination power, 29 pin of read-write termination integrated circuit U3B and the input of integrated circuit U6B, 36 pin connect 22 pin of integrated circuit U2B, 130 pin connect 3 pin of crystal oscillator Y1B, 98 pin connect 9 pin and 11 pin of integrated circuit U5B, 99 pin connect 7 pin of integrated circuit U5B, 100 pin connect 3 pin of integrated circuit U5B, 102 pin connect 1 pin of integrated circuit U5B, 103 pin connect 2 pin of integrated circuit U5B, 95 pin connect 14 pin of integrated circuit U5B, 96 pin connect 13 pin of integrated circuit U5B, 124 pin connect power supply by resistance R 5B, 138 pin and 139 pin connect an end and the power supply of capacitor C 3B, 133 pin of integrated circuit U4B, 134 pin, 45 pin and 122 pin ground connection, 131 pin connect the end of the end of capacitor C 15B and capacitor C 16B and capacitor C 17B and connect power supply by resistance R 4B, 127 pin connect the end of capacitor C 18B and connect power supply by resistance R 6B, 35 pin connect 22 pin of integrated circuit U3B, 33 pin connect 26 pin of integrated circuit U1B, 32 pin connect 22 pin of integrated circuit U1A, 135 pin and 136 pin connect power supply, capacitor C 4B is the filter capacitor of power supply, the other end ground connection of the other end of capacitor C 3B and capacitor C 15B～capacitor C 18B, capacitor C 2B and capacitor C 4B and capacitor C 5B are the filter capacitors of power supply.46 pin of integrated circuit U1B and 27 pin ground connection, 37 pin and 13 pin and 47 pin connect power supply.16 pin of integrated circuit U2B and 24 pin ground connection, 31 pin and 32 pin connect power supply, and capacitor C 1B is the filter capacitor of power supply.32 pin of integrated circuit U3B connect power supply, 30 pin and connect the output that power supply, 16 pin ground connection, 24 pin meet integrated circuit U6B by resistance R 1B.The output of integrated circuit U6B connects power supply by resistance R 2B.4 pin of crystal oscillator Y1B connect power supply, 2 pin ground connection.120 pin of integrated circuit U4B and 116 pin and 110 pin connect serial communication circuit.The model of the integrated circuit U1B of foregoing circuit is that the model of AT49BV642D, integrated circuit U2B is that the model of SST39VF010, integrated circuit U3B is that the model of DS1556W, integrated circuit U4B is that the model of TMS320VC33, integrated circuit U5B is that the model of JTAG_TMS320, integrated circuit U6B is that the model of 74F06, integrated circuit U7B is MAX3232.
The present invention has adopted SCM system and signal processing system, SCM system is finished the data acquisition of pressure and temperature, signal processing system realizes complicated iterative algorithm, improve the precision of system and carried out efficient, serial communication between existing signal processing system of communication interface and the external computer, also have single-chip microcomputer with and the transfer of data of display circuit, make things convenient for the real-time monitoring and the demonstration of data, obtain real-time results rapidly.The present invention has that volume is little, easy to carry, pressure measurement precision height, the data of surveying accurately monitor rapidly, in real time and advantage such as demonstration, can be used for monitoring the pressure in the oil gas well.
Description of drawings
Fig. 1 is an electrical principle block diagram of the present invention.
Fig. 2 is the data acquisition electronic circuit schematic diagram of one embodiment of the invention.
Fig. 3 is that the data of one embodiment of the invention are handled the electronic circuit schematic diagram.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Fig. 1 is an electrical principle block diagram of the present invention, referring to Fig. 1.The present invention is connected and composed by electric current commentaries on classics potential circuit, A/D change-over circuit, SCM system, display circuit, signal processing system, serial communication circuit.Electric current changes potential circuit output termination A/D change-over circuit, and the A/D change-over circuit is connected with SCM system, the output termination display circuit of SCM system, and SCM system is connected with signal processing system, and signal processing system is connected with serial communication circuit.
Electric current changes potential circuit and becomes voltage signal to output to the A/D change-over circuit current conversion, and the A/D change-over circuit is converted to data signal with the voltage signal of importing and outputs to SCM system, finishes the data acquisition of capillary pressure.SCM system is transferred to signal processing system with the pressure and temperature signal the imported parallel port by 8, signal processing system is extrapolated measuring point pressure and formation pressure according to the capillary pressure force data at well head place, signal processing system stores data in the memory of this system, pass through serial communication circuit simultaneously, transfer of data to external computer, is monitored in real time; Signal processing system sends data to SCM system, and SCM system is delivered to display circuit to measuring point pressure, formation pressure that well head place capillary pressure force data and processing obtain by serial ports, shows.
In Fig. 2, the electric current of present embodiment changes potential circuit and is connected and composed by integrated circuit U3A, integrated circuit U4A, resistance R 1A, resistance R 2A, potentiometer R3A, potentiometer R4A, capacitor C 9A～capacitor C 12A, and the model of integrated circuit U3A and integrated circuit U4A is ISO-A4-P3-04.The pressure to current signal of one tunnel input is by the input of 1 pin of integrated circuit U3A, and 4 pin of integrated circuit U3A connect the end of capacitor C 10A and capacitor C 12A and connect the other end of 5V positive source, 5 pin and capacitor C 10A and the other end ground connection of capacitor C 12A, the end that 9 pin meet potentiometer R3A, the other end and adjustable end, 8 pin ground connection, 11 pin that 10 pin meet potentiometer R3A connect the A/D change-over circuit by resistance R 1A.The pressure to current signal of another road input is by the 1 pin input of integrated circuit U4A, and 4 pin of integrated circuit U4A connect the end of capacitor C 9A and capacitor C 11A and connect the other end of 5V positive source, 5 pin and capacitor C 9A and the other end ground connection of capacitor C 11A, the end that 9 pin meet potentiometer R4A, the other end and adjustable end, 8 pin ground connection, 11 pin that 10 pin meet potentiometer R4A connect the A/D change-over circuit by resistance R 2A.
The A/D change-over circuit of present embodiment is connected and composed by integrated circuit U2A, integrated circuit U5A, resistance R 5A～resistance R 9A, capacitor C 1A～capacitor C 6A, capacitor C 13A, capacitor C 14A, capacitor C 22A, the model of integrated circuit U2A is REF02, and the model of integrated circuit U5A is ADS1226.11 pin, 8 pin that 10 pin of integrated circuit U5A connect the end of capacitor C 13A and meet integrated circuit U3A by resistance R 1A connect an end and the power supply that the end of the end of the end of the end of 11 pin of integrated circuit U4A and capacitor C 14A, 6 pin that 14 pin meet integrated circuit U2A and capacitor C 3A and capacitor C 4A, a end that 15 pin meet capacitor C 5A and capacitor C 22A and 5V positive source, 16 pin meet capacitor C 6A, 4,6,9,11,12, the 13 pin ground connection of integrated circuit U5A by resistance R 2A.2 pin of integrated circuit U2A connect the end of capacitor C 1A and capacitor C 2A and 12V positive source, 4 pin ground connection, the other end ground connection of capacitor C 1A, capacitor C 2A, capacitor C 3A, capacitor C 4A, capacitor C 5A, capacitor C 6A, capacitor C 22A.Integrated circuit U2A, capacitor C 1A～capacitor C 4A, capacitor C 13A connect into mu balanced circuit, and U5A provides reference power source for integrated circuit.1 pin of integrated circuit U5A～3 pin connect SCM system by resistance R 5A～resistance R 7A respectively.
The SCM system of present embodiment is connected and composed by integrated circuit U1A, capacitor C 7A, capacitor C 8A, capacitor C 15A, capacitor C 16A, crystal oscillator Y1A, and the model of integrated circuit U1A is MSP430F2272.16 pin of integrated circuit U1A connect 1 pin of integrated circuit U5A by resistance R 5A, 11 pin connect 2 pin of integrated circuit U5A by resistance R 6A, 10 pin connect 3 pin of integrated circuit U5A by resistance R 7A, 15 pin connect 5 pin of integrated circuit U5A by resistance R 8A, 2 pin and 3 pin connect the oscillating circuit that is connected and composed by crystal oscillator Y1A and capacitor C 15A and capacitor C 16A, 13 pin connect an end and the ground connection of capacitor C 7A, 14 pin connect the other end and the power supply of capacitor C 7A, 1 pin and 4 pin connect an end and the ground of capacitor C 8A, 38 pin and 39 pin connect the other end and the power supply of capacitor C 8A, and 17 pin of integrated circuit U1A and 18 pin and 21 pin connect display circuit, 29 pin～36 pin are by the bus interface signal processing system, 22 pin～24 pin, 5 pin connect signal processing system.
The display circuit of present embodiment is connected and composed by integrated circuit U6A, integrated circuit U7A, capacitor C 17A～capacitor C 21A, and the model of integrated circuit U6A is MAX3232, and the model of integrated circuit U7A is YD711.11 pin of integrated circuit U6A connect 18 pin of integrated circuit U1A, 12 pin connect 17 pin of integrated circuit U1A, 13 pin of integrated circuit U7A connect 21 pin of integrated circuit U1A, 14 pin of integrated circuit U6A connect 14 pin of integrated circuit U7A, 4 pin and 5 pin connect the two ends of capacitor C 17A, 15 pin ground connection, 1 pin and 3 pin connect the two ends of capacitor C 21A, 13 pin connect 15 pin of integrated circuit U7A, 16 pin connect an end and the power supply of capacitor C 18A, 6 pin connect the end of capacitor C 20A, 2 pin connect the end of capacitor C 19A, capacitor C 18A, capacitor C 19A, the other end ground connection of capacitor C 20A, 1 pin of integrated circuit U7A～3 pin ground connection, 18 pin～20 pin connect the 12V positive source.
In Fig. 2,3, the signal processing system of present embodiment is connected and composed by integrated circuit U1B～integrated circuit U6B, resistance R 1B～resistance R 6B, capacitor C 1B～capacitor C 5B, capacitor C 15B～capacitor C 18B, crystal oscillator Y1B, and integrated circuit U1B is that AT49BV642D, integrated circuit U2B are that the program storage model is that the model of SST39VF010, integrated circuit U3B is that the model of DS1556W, integrated circuit U4B is that the model of TMS320VC33, integrated circuit U5B is that the model of JTAG TMS320, integrated circuit U6B is 74F06 for the data storage model.D8 end～D15 the end of integrated circuit U4B is by the D8 end～D15 end of bus interface integrated circuit U1A, D0 end～D7 end is by the D0 end～D7 end of bus interface integrated circuit U2B and integrated circuit U3B, D16 end～D31 end is by the D16 end～D31 end of bus interface integrated circuit U1B, A0 end～A21 end is by the A0 end～A21 end of bus interface U1B, A0 end～A16 end is by the A0 end～A16 end of bus interface integrated circuit U2B and integrated circuit U3B, ground end ground connection, the power supply termination power, 29 pin of read-write termination integrated circuit U3B and the input of integrated circuit U6B, 36 pin connect 22 pin of integrated circuit U2B, 130 pin connect 3 pin of crystal oscillator Y1B, 98 pin connect 9 pin and 11 pin of integrated circuit U5B, 99 pin connect 7 pin of integrated circuit U5B, 100 pin connect 3 pin of integrated circuit U5B, 102 pin connect 1 pin of integrated circuit U5B, 103 pin connect 2 pin of integrated circuit U5B, 95 pin connect 14 pin of integrated circuit U5B, 96 pin connect 13 pin of integrated circuit U5B, 124 pin connect power supply by resistance R 5B, 138 pin and 139 pin connect an end and the power supply of capacitor C 3B, 133 pin of integrated circuit U4B, 134 pin, 45 pin and 122 pin ground connection, 131 pin connect the end of the end of capacitor C 15B and capacitor C 16B and capacitor C 17B and connect power supply by resistance R 4B, 127 pin connect the end of capacitor C 18B and connect power supply by resistance R 6B, 35 pin connect 22 pin of integrated circuit U3B, 33 pin connect 26 pin of integrated circuit U1B, 32 pin connect 22 pin of integrated circuit U1A, 135 pin and 136 pin connect power supply, capacitor C 4B is the filter capacitor of power supply, the other end ground connection of the other end of capacitor C 3B and capacitor C 15B～capacitor C 18B, capacitor C 2B and capacitor C 4B and capacitor C 5B are the filter capacitors of power supply.46 pin of integrated circuit U1B and 27 pin ground connection, 37 pin and 13 pin and 47 pin connect power supply.16 pin of integrated circuit U2B and 24 pin ground connection, 31 pin and 32 pin connect power supply, and capacitor C 1B is the filter capacitor of power supply.32 pin of integrated circuit U3B connect power supply, 30 pin and connect the output that power supply, 16 pin ground connection, 24 pin meet integrated circuit U6B by resistance R 1B.The output of integrated circuit U6B connects power supply by resistance R 2B.4 pin of crystal oscillator Y1B connect power supply, 2 pin ground connection.120 pin of integrated circuit U4B and 116 pin and 110 pin connect serial communication circuit.
The serial communication circuit of present embodiment is connected and composed by integrated circuit U7B, capacitor C 7B～capacitor C 11B, socket J1, and the model of integrated circuit U7B is MAX3232.2 pin, 4 pin and 5 pin that 9 pin of integrated circuit U7B meet 120 pin of integrated circuit U4B and 110 pin that 116 pin, 10 pin meet integrated circuit U4B, 7 pin combination hub J1 connect 3 pin of two ends that the two ends of capacitor C 7B, 15 pin ground connection, 1 pin and 3 pin meet capacitor C 8B, 11 pin combination hub J1, an end, 16 pin that 2 pin meet capacitor C 10B and connect the end that the other end of capacitor C 10B and capacitor C 11B and power supply, 6 pin meet capacitor C 9B, 5 pin ground connection of the end of capacitor C 11B and the other end of capacitor C 9B and socket.1 pin of socket J1 connects the 5V positive source.
Operating principle of the present invention is as follows:
The pressure to current signal first via is from the 1 pin input of integrated circuit U3A, convert the 11 pin output of voltage signal to by integrated circuit U3A from integrated circuit U3A, deliver to analog input end 10 pin of integrated circuit U5A, convert data signal to, 3 pin by integrated circuit U5A output to 10 pin of integrated circuit U1A with serial mode, finish the data acquisition of pressure signal input 1.Pressure to current signal the second road is from 1 pin of integrated circuit U4A, by the 3 pin output of integrated circuit U4A, deliver to analog input end 8 pin of integrated circuit U5A, convert data signal to, the two-way time sharing sampling outputs to 10 pin of integrated circuit U1A by 3 pin of integrated circuit U5A.Temperature signal is a data signal, by 19 pin of integrated circuit U1A, realizes the collection of temperature data.The pressure and temperature signals collecting to integrated circuit U1A, is done simple processing to it, deliver to the D8 end～D15 end of integrated circuit U4B by P1.0 mouth～P1.7 mouth of integrated circuit U1A.Integrated circuit U4B is correspondingly processed the signal that integrated circuit U1A sends here, and simultaneously, integrated circuit U4B also reads the temporal information of integrated circuit U3B, is mapped with pressure data.Processed data stream is to dividing three the tunnel: the first via is delivered to integrated circuit U1B by data wire D31～D16; The second the tunnel delivers to 10 pin of integrated circuit U7B by 110 pin of integrated circuit U4B, after integrated circuit U7B carries out level conversion, delivers to 2 pin of socket J1 by 7 pin of integrated circuit U7B, delivers to external computer with serial mode.Third Road is delivered to 23 pin of integrated circuit U1A by 111 pin of integrated circuit U4B, output to 11 pin of integrated circuit U6A then by 18 pin of integrated circuit U1A, output to 14 pin of integrated circuit U7A after the level conversion by 14 pin of integrated circuit U6A, realize real-time Presentation Function.In addition, the data that data handling system also receives the input of external computer are delivered to 11 pin of integrated circuit U7B by 3 pin of socket J1, output to 116 pin and 120 pin of integrated circuit U4B by integrated circuit U7B 9 pin, identical through the signal trend of integrated circuit U4B with Third Road.Output to display by display circuit.
Claims (1)
1. capillary pressure measuring device, it comprises the SCM system that complete machine is controlled, the pressure to current signal of input is converted to the electric current commentaries on classics potential circuit of voltage signal, the A/D change-over circuit that input termination electric current changes potential circuit and is connected with SCM system, the signal processing system that is connected with SCM system, input connects the display circuit of SCM system, it also comprises the serial communication circuit that is connected with SCM system, it is characterized in that said signal processing system is: the D8 end～D15 end of integrated circuit U4B is by the D8 end～D15 end of bus interface integrated circuit U1A, D0 end～D7 end is by the D0 end～D7 end of bus interface integrated circuit U2B and integrated circuit U3B, D16 end～D31 end is by the D16 end～D31 end of bus interface integrated circuit U1B, A0 end～A21 end is by the A0 end～A21 end of bus interface integrated circuit U1B, A0 end～A16 end is by the A0 end～A16 end of bus interface integrated circuit U2B and integrated circuit U3B, ground end ground connection, the power supply termination power, 29 pin of read-write termination integrated circuit U3B and the input of integrated circuit U6B, 36 pin connect 22 pin of integrated circuit U2B, 130 pin connect 3 pin of crystal oscillator Y1B, 98 pin connect 9 pin and 11 pin of integrated circuit U5B, 99 pin connect 7 pin of integrated circuit U5B, 100 pin connect 3 pin of integrated circuit U5B, 102 pin connect 1 pin of integrated circuit U5B, 103 pin connect 2 pin of integrated circuit U5B, 95 pin connect 14 pin of integrated circuit U5B, 96 pin connect 13 pin of integrated circuit U5B, 124 pin connect power supply by resistance R 5B, 138 pin and 139 pin connect an end and the power supply of capacitor C 3B, 133 pin of integrated circuit U4B, 134 pin, 45 pin and 122 pin ground connection, 131 pin connect the end of the end of capacitor C 15B and capacitor C 16B and capacitor C 17B and connect power supply by resistance R 4B, 127 pin connect the end of capacitor C 18B and connect power supply by resistance R 6B, 35 pin connect 22 pin of integrated circuit U3B, 33 pin connect 26 pin of integrated circuit U1B, 32 pin connect 22 pin of integrated circuit U1A, 135 pin and 136 pin connect power supply, capacitor C 4B is the filter capacitor of power supply, the other end ground connection of the other end of capacitor C 3B and capacitor C 15B～capacitor C 18B, capacitor C 2B and capacitor C 4B and capacitor C 5B are the filter capacitors of power supply; 46 pin of integrated circuit U1B and 27 pin ground connection, 37 pin and 13 pin and 47 pin connect power supply; 16 pin of integrated circuit U2B and 24 pin ground connection, 31 pin and 32 pin connect power supply, and capacitor C 1B is the filter capacitor of power supply; 32 pin of integrated circuit U3B connect power supply, 30 pin and connect the output that power supply, 16 pin ground connection, 24 pin meet integrated circuit U6B by resistance R 1B; The output of integrated circuit U6B connects power supply by resistance R 2B; 4 pin of crystal oscillator Y1B connect power supply, 2 pin ground connection; 120 pin of integrated circuit U4B and 116 pin and 110 pin connect serial communication circuit; The model of integrated circuit U1B is that the model of AT49BV642D, integrated circuit U2B is that the model of SST39VF010, integrated circuit U3B is that the model of DS1556W, integrated circuit U4B is that the model of TMS320VC33, integrated circuit U5B is that the model of JTAGTMS320, integrated circuit U6B is that the model of 74F06, integrated circuit U7B is MAX3232.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505050A CN101328802B (en) | 2008-07-31 | 2008-07-31 | Capillary pressure measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505050A CN101328802B (en) | 2008-07-31 | 2008-07-31 | Capillary pressure measuring device |
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| CN101328802A CN101328802A (en) | 2008-12-24 |
| CN101328802B true CN101328802B (en) | 2011-11-02 |
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| CN2008101505050A Expired - Fee Related CN101328802B (en) | 2008-07-31 | 2008-07-31 | Capillary pressure measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103775060B (en) * | 2013-03-28 | 2016-07-13 | 中国石油天然气股份有限公司 | Thermocouple temperature compensation pressure measurement nitrogen supplement control instrument and test method |
| CN103742128B (en) * | 2013-12-18 | 2016-08-31 | 中国科学院力学研究所 | A kind of system for testing pressure of capillary tube of coal bed gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2451735Y (en) * | 2000-11-03 | 2001-10-03 | 中国石油天然气股份有限公司 | Capillary tube pressure monitoring pressure transmission cylinder in well |
| CN201041033Y (en) * | 2006-09-29 | 2008-03-26 | 中国石油天然气股份有限公司 | Capillary dynamic layered pressure monitor |
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2008
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| Publication number | Publication date |
|---|---|
| CN101328802A (en) | 2008-12-24 |
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