CN105181218A - Pressure measurement device and system - Google Patents

Pressure measurement device and system Download PDF

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Publication number
CN105181218A
CN105181218A CN201510634505.8A CN201510634505A CN105181218A CN 105181218 A CN105181218 A CN 105181218A CN 201510634505 A CN201510634505 A CN 201510634505A CN 105181218 A CN105181218 A CN 105181218A
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pressure
signal
communication bus
mentioned
acquisition controller
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CN105181218B (en
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姜景捷
马秀敏
彭华
李振
彭立国
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INSTITUTE OF GEOMECHANICS CHINESE ACADEMY OF GEOLOGICAL SCIENCES
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INSTITUTE OF GEOMECHANICS CHINESE ACADEMY OF GEOLOGICAL SCIENCES
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Abstract

The invention provides a pressure measurement device and system. The device comprises a pressure sensor, a signal conditioning circuit, an analog-to-digital convertor, a collection controller and a memory which are connected one by one, as well as a capacitor energy storage connected with an external power supply system. The device integrates the pressure sensor, the signal conditioning circuit, the analog-to-digital convertor and the collection controller into a module for pressure measurement, improves the accuracy of measurement data, and quickly stores a pressure digital signal of the collection controller through adding a memory. Meanwhile, through adding of the capacitor energy storage, when the external power supply system is cut off due to a harsh external measurement environment, emergency power supply can be provided, and data loss can be avoided to the maximum.

Description

A kind of device for pressure measurement and system
Technical field
The present invention relates to water pressure supporing technical field, in particular to a kind of device for pressure measurement and system.
Background technology
At present, hydraulic fracturing is a kind of effective ways measuring crustal bathyderm rock mass crustal stress states, is one of current most important internationally recognized In-situ stress measurements method, therefore, is widely used in geostress survey work.
Current, a kind of pressure-measuring system is provided mainly: in hydrofracturing measuring process in correlation technique, by a pair setting formation packing section of packer (situation about measuring at the bottom of hole can adopt single packer), high-pressure hydraulic pump is used to be pressurizeed with constant rate water filling to packing section by drilling rod or high-pressure hose, judge that cell wall rupture produces or breaks according to the pressure-time curve of in-site measurement instrument record to re-open, determine the key parameter such as closing presure, reopening pressure, the terrestrial stress information of measurement target position.Generally by two or more operator, measuring system is operated in work on the spot, respectively operation note instrument and high-pressure hydraulic pump.In current techniques application, pressure transducer, flowmeter are connected to high speed acquisition instrument by cable, image data transfers to computing machine and carries out record, generally be transmitted as simulating signal, measuring accuracy, degree of stability are poor, and high-pressure hydraulic pump distance calculation is far away, the more difficult duty being carried out control pump by pressure transducer image data of operator, the switch of the pointer pressure operating pumps that can only be carried by high pressure cylinders, have intrinsic error between measurement due to different pressures table, current mode is unfavorable for the accurate control of measuring process.In addition, hydrofracturing test job in the wild situ of drilling well is carried out, and working environment is relatively more severe, and electric power supply is unstable, and personnel are complicated, and pressure-measuring system is easily subject to the impact of many objective factors, causes data acquisition quality to decline, even missing measurement.
Realizing in process of the present invention, inventor finds at least there is following problem in correlation technique: the data collected due to pressure-measuring system need to transfer in computing machine carries out record, and generally, transmit with the form of simulating signal, easily be subject to the impact of the factor such as measurement environment, electric power supply, easily be interfered in data transmission procedure or lose, causing the data of record inaccurate or imperfect, thus affect quality and the progress of follow-up whole survey engineering operation.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide a kind of device for pressure measurement and system, need to transfer in computing machine carry out record to solve the data collected due to pressure-measuring system in correlation technique, and generally, transmit with the form of simulating signal, easily be subject to the impact of the factor such as measurement environment, electric power supply, easily be interfered in data transmission procedure or lose, cause the data of record inaccurate or imperfect, thus affect quality and the progress of follow-up whole survey engineering operation.
First aspect, embodiments provide a kind of device for pressure measurement, this device comprises: the pressure transducer connected successively, signal conditioning circuit, analog to digital converter, acquisition controller and storer, and the capacitor energy be connected with extraneous electric power system;
Described pressure transducer gathers the pressure physical signalling of measured point, and described pressure physical signalling is converted into pressure simulation electric signal, by described pressure simulation electric signal transmission to described signal conditioning circuit;
Described signal conditioning circuit encourages and impedance matching process described pressure simulation electric signal, and the pressure simulation electric signal after output processing is to described analog to digital converter;
Described pressure simulation electric signal after process is converted to pressure on the number signal by described analog to digital converter, by described pressure on the number Signal transmissions to described acquisition controller;
Described pressure on the number signal is saved to described storer by described acquisition controller, by communication bus by equipment extremely outside for described pressure on the number Signal transmissions;
Described capacitor energy is all electrically connected with described pressure transducer, described signal conditioning circuit, described analog to digital converter, described acquisition controller and described storer, for described pressure transducer, described signal conditioning circuit, described analog to digital converter, described acquisition controller and described storer transmission of electric energy.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, wherein, above-mentioned measurement mechanism also comprises: isolation power supply component, described isolation power supply component is arranged between described capacitor energy and extraneous electric power system, for eliminating the undesired signal that described extraneous electric power system exports.
In conjunction with first aspect, embodiments provide the embodiment that the second of first aspect is possible, wherein, said apparatus also comprises: the first communication bus controller, described first communication bus controller is connected with described acquisition controller, pressure on the number signal for exporting described acquisition controller carries out protocol conversion, the described pressure on the number signal after conversion is transferred to the equipment of described outside by described communication bus.
In conjunction with first aspect, embodiments provide the third possible embodiment of first aspect, wherein, above-mentioned communication bus is provided with multiple data output interface.
In conjunction with first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, said apparatus also comprises: wireless communication module, described wireless communication module is connected with mobile terminal with described acquisition controller respectively, is sent to described mobile terminal for the pressure on the number signal exported by described acquisition controller with the form of radio communication; Described wireless communication module also for receiving the control signal of operator's input that described mobile terminal sends, is arranged correlation parameter according to described control signal to make described acquisition controller.
In conjunction with first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein, above-mentioned acquisition controller is provided with following in one or more interfaces: HART interface, RS232 interface, USB interface, image data and control information can be transmitted.
Second aspect, the embodiment of the present invention additionally provides a kind of pressure-measuring system, and this measuring system comprises above-mentioned device for pressure measurement, also comprises: outside equipment;
The equipment of described outside comprises: at least one data recorder and at least one data display equipment;
Described data recorder is connected on described communication bus, for recording the pressure on the number signal that described device for pressure measurement gathers;
Described data display equipment is distributed on described communication bus, for receive at different station and show described device for pressure measurement transmission pressure on the number signal.
In conjunction with second aspect, embodiments provide the first possible embodiment of second aspect, wherein, above-mentioned data display equipment comprises: microcontroller, the second communication bus controller and display element, described display element comprises: analog display element, and/or digital display element; One end of described microcontroller is connected to described communication bus by described second communication bus controller; The other end of described microcontroller is connected with described display element.
A kind of device for pressure measurement that the embodiment of the present invention provides and system, wherein, this measurement mechanism comprises: the pressure transducer connected successively, signal conditioning circuit, analog to digital converter, acquisition controller and storer, and the capacitor energy to be connected with extraneous electric power system, this capacitor energy is to pressure transducer, signal conditioning circuit, analog to digital converter, acquisition controller and storer transmission of electric energy; Pressure on the number signal is saved to storer by acquisition controller, by communication bus by equipment extremely outside for pressure on the number Signal transmissions.The embodiment of the present invention is passed through pressure transducer, signal conditioning circuit, analog to digital converter and acquisition controller are integrated in a module and carry out pressure survey, improve the accuracy of measurement data, and by increasing storer, pressure on the number signal in acquisition controller is carried out quick storage, to prevent missing measurement, ensure that the integrality of measurement data, simultaneously, also by increasing capacitor energy, badly to cause providing when extraneous electric power system power-off emergency electric power supply in extraneous measurement environment, can realize preventing loss of data to greatest extent.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the structural representation of a kind of device for pressure measurement that the embodiment of the present invention provides;
Fig. 2 shows the structural representation of the another kind of device for pressure measurement that the embodiment of the present invention provides;
Fig. 3 shows the structural representation of a kind of pressure-measuring system that the embodiment of the present invention provides;
Fig. 4 shows the structural representation of the data display equipment that the embodiment of the present invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on embodiments of the invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Consider in correlation technique that there are the data collected due to pressure-measuring system needs to transfer in computing machine and carry out record, and generally, transmit with the form of simulating signal, owing to being subject to the factor impacts such as measurement environment, easily be interfered in data transmission procedure or lose, cause the data of record inaccurate or imperfect, thus affect quality and the progress of follow-up whole survey engineering operation.Based on this, embodiments provide a kind of device for pressure measurement and system, be described below by embodiment.
The structural representation of a kind of device for pressure measurement as shown in Figure 1, this measurement mechanism comprises: the pressure transducer 11 connected successively, signal conditioning circuit 12, analog to digital converter 13, acquisition controller 14 and storer 15;
Above-mentioned pressure transducer 11 gathers the pressure physical signalling of measured point, and this pressure physical signalling is converted into pressure simulation electric signal, by above-mentioned pressure simulation electric signal transmission to above-mentioned signal conditioning circuit 12;
Above-mentioned signal conditioning circuit 12 encourages and impedance matching process above-mentioned pressure simulation electric signal, and the pressure simulation electric signal after output processing is to above-mentioned analog to digital converter 13;
Above-mentioned pressure simulation electric signal after process is converted to pressure on the number signal by above-mentioned analog to digital converter 13, by above-mentioned pressure on the number Signal transmissions to above-mentioned acquisition controller 14;
Above-mentioned pressure on the number signal is saved to above-mentioned storer 15 by above-mentioned acquisition controller 14, by communication bus by equipment extremely outside for above-mentioned pressure on the number Signal transmissions.
Wherein, above-mentioned pressure transducer 11 is mainly used to gather the pressure physical signalling of measured point and pressure physical signalling is converted to the electronic component of electric signal, this pressure transducer 11 can select diffusion silicon pressure sensor, diffusion silicon pressure sensor main operational principle is: the pressure of measured point directly acts on (stainless steel or pottery) on the diaphragm of sensor, make diaphragm produce the micrometric displacement be directly proportional to pressure medium, and then the resistance value of diffuse si sensor is changed and exports the electric signal corresponding with this resistance change amount;
The electric signal exported due to above-mentioned pressure transducer 11 is the electric signal corresponding with resistance change, analog to digital converter 13 cannot directly be converted into pressure on the number signal, therefore, add excitation to pressure transducer 11 by signal conditioning circuit 12 again, be converted to magnitude of voltage with the electric signal making resistance change corresponding and change corresponding electric signal; In addition, when the output internal resistance of pressure transducer 11 is larger, directly carrying out collection by analog to digital converter 13 can be subject to larger interference, now carries out impedance matching by signal conditioning circuit 12, can improve precision and the antijamming capability of analog to digital converter 13 collection;
The analog voltage signal that signal conditioning circuit 12 transmits is converted to digital signal by above-mentioned analog to digital converter 13, this analog to digital converter 13 can select high-precision 24 sigma-delta pattern number converters, wherein, this analog to digital converter 13 has the advantages that dynamic range is high, signal resolution is high;
Above-mentioned acquisition controller 14 receive and resolve analog to digital converter 13 export pressure on the number signal be cached to storer 15, this pressure on the number signal recompile is sent to communication bus, receive communication bus order reading named cache content and be sent to communication bus, contact modules is played in whole acquisition system, and to the function that state or the request of modules provide reply to operate, perform the control to data acquisition, storage, transfer process according to user instruction, above-mentioned storer 15 is high speed nonvolatile memorys, high speed ferroelectric type storer can be selected, this type nonvolatile memory power-off keeps write content not change, and write data speed is high, the function of fast the pressure on the number signal in acquisition controller 14 being carried out storage backup can be realized, the signal transmitted between acquisition controller 14 and storer 15 is the Frame carrying timestamp, when there is abnormal or power-off suddenly in data transmission, owing to the data in acquisition controller 14 being stored in fast in above-mentioned storer 15, when needing to check this part data, the data stored in above-mentioned storer 15 are accessed by communication bus, ensure that continuity and the integrality of measurement data.
Consider and may exist because extraneous measurement environment is severe and cause the phenomenon of extraneous electric power system power-off or spread of voltage, based on this, as shown in Figure 1, said apparatus also comprises: the capacitor energy 16 be connected with extraneous electric power system, above-mentioned capacitor energy 16 all with above-mentioned pressure transducer 11, above-mentioned signal conditioning circuit 12, above-mentioned analog to digital converter 13, above-mentioned acquisition controller 14, and above-mentioned storer 15 is electrically connected, for to above-mentioned pressure transducer 11, above-mentioned signal conditioning circuit 12, above-mentioned analog to digital converter 13, above-mentioned acquisition controller 14, and above-mentioned storer 15 transmission of electric energy.
Wherein, above-mentioned capacitor energy 16 can select super electric capacity energy storage means, this capacitor energy 16 is a kind of novel energy-accumulating element, have charging rate fast, memoryless, without leakage, the plurality of advantages such as reusable, have the advantages that load capacity is strong, and do not affect power reservoir capacity when long storage time.Thus, during storage without the need to periodic charge or periodic maintenance, there is extremely strong advantage in the wild or under harsh operating environment.
In embodiments of the present invention, pressure survey is carried out by pressure transducer 11, signal conditioning circuit 12, analog to digital converter 13 and acquisition controller 14 being integrated in a module, improve the accuracy of measurement data, and by increasing storer 15, pressure on the number signal in acquisition controller 14 is carried out quick storage, cause missing measurement to prevent because data transmission occurs abnormal, ensure that the integrality of measurement data; Simultaneously, also by increasing capacitor energy 16, badly to cause providing when extraneous electric power system power-off emergency electric power supply in extraneous measurement environment, can realize preventing loss of data to greatest extent, therefore, utilize the mode that storer 15 combines with capacitor energy 16, when the electric power of measuring system, communication line or Survey Software occur abnormal, the integrality of image data can be ensured to greatest extent.
Further, in order to prevent the Acquire and process process of the undesired signal interfering data of extraneous electric power system, as shown in Figure 2, above-mentioned measurement mechanism also comprises: isolation power supply component 17, above-mentioned isolation power supply component 17 is arranged between above-mentioned capacitor energy 16 and extraneous electric power system, for eliminating the undesired signal that above-mentioned extraneous electric power system exports, and then improve signals collecting precision and the quality of device for pressure measurement.
In order to the pressure on the number Signal transmissions in acquisition controller 14 is carried out comparatively long-distance transmissions to communication bus, and the conflict processed on communication bus, said apparatus also comprises: the first communication bus controller, above-mentioned first communication bus controller is electrically connected with above-mentioned acquisition controller 14, pressure on the number signal for exporting above-mentioned acquisition controller 14 carries out protocol conversion according to the standard that bus identifies, the above-mentioned pressure on the number signal after conversion is transferred to the equipment of said external by above-mentioned communication bus.
In embodiments of the present invention, the function that between acquisition controller 14 and communication bus, signaling protocol is changed is realized by above-mentioned communication bus controller, the multiple bus structure such as RS485 type, CAN type, ether net type can be selected as required, wherein, because RS485 type has that cost is low, power consumption is little, lays feature and being widely used easily.
Measurement data can be checked to make the personnel at different station place simultaneously, above-mentioned communication bus can be provided with multiple data output interface, wherein, quantity and the distribution of data output interface can be planned according to actual conditions, each data output interface all can connect a data display equipment 21, for staff's real time inspection and/or record measurement data, the pressure information of homology can be shown at different station, enhance the ability that in hydrofracturing measuring process, each station is coordinated.
Further, said apparatus also comprises: wireless communication module, above-mentioned wireless communication module is connected with mobile terminal with above-mentioned acquisition controller 14 respectively, is sent to above-mentioned mobile terminal for the pressure on the number signal exported by above-mentioned acquisition controller 14 with the form of radio communication; Above-mentioned wireless communication module is also for receiving the control signal of operator's input that above-mentioned mobile terminal sends, correlation parameter is arranged according to control signal to make above-mentioned acquisition controller 14, wherein, above-mentioned mobile terminal can be mobile phone, also can be panel computer ipad, can also be other portable electric appts.
Above-mentioned acquisition controller 14 can also be provided with following in one or more interfaces: HART interface, RS232 interface, USB interface, so that follow-up to test data upload and download or when communication bus occurs abnormal, above-mentioned interface can be utilized to transmit the data gathered, also can be configured or firmware upgrade device for pressure measurement;
Known based on above-mentioned analysis, compared with the device for pressure measurement in correlation technique, the device for pressure measurement that the embodiment of the present invention provides is by carrying out pressure survey by the mode that pressure transducer 11, signal conditioning circuit 12, analog to digital converter 13 and acquisition controller 14 integrate, improve the accuracy of measurement data, and by increasing storer 15, pressure on the number signal in acquisition controller 14 is carried out quick storage, to prevent missing measurement, ensure that the integrality of measurement data.Further, by arranging capacitor energy 16, in the unexpected power-off of extraneous electric power system or when occurring abnormal, the normal operation of measurement mechanism can be ensured; Further, by arranging isolation power supply component 17 between capacitor energy 16 and extraneous electric power system, the undesired signal that electric power system exports to external world is eliminated, and improves signals collecting precision and the quality of device for pressure measurement.
As shown in Figure 3, the embodiment of the present invention also provides a kind of pressure-measuring system, and wherein, this measuring system comprises above-mentioned device for pressure measurement, also comprises: outside equipment;
The equipment of said external comprises: at least one data recorder and at least one data display equipment 21, wherein, above-mentioned data recorder can be notebook computer or the industrial computer of a band bus controller, this data recorder is connected on described communication bus, for recording the pressure on the number signal that described device for pressure measurement gathers;
Above-mentioned data display equipment 21 is distributed on above-mentioned communication bus, for receive and show above-mentioned device for pressure measurement transmission pressure on the number signal.
Wherein, acquisition controller 14 in above-mentioned device for pressure measurement passes through communication bus controller by pressure on the number Signal transmissions to communication bus, communication bus is connected with external unit, this external unit receives the pressure on the number signal on communication bus, said external equipment can be that form is deployed in the multiple data display equipments 21 on communication bus in a distributed manner, be used for display measurement data, so that operating personnel's real time inspection measurement data of different station, also can be a portable computer or industrial computer, after installing support software, this computing machine has collection, store, the function of display data and curve.
In above-mentioned device for pressure measurement, at the multiple data output interface of communication bus deploy, this data output interface has same rank, and this data output interface all can connect a data display equipment 21, for showing the real-time stream on communication bus; Adopt the mode of distributed display at communication bus deploy data display equipment 21, the pressure data when pre-test carry out checking by the operator being convenient to different station, record.
In addition, in embodiments of the present invention, the process that pressure physical signalling is converted to pressure on the number signal is deployed in collection terminal, a now transmission pressure digital signal in the transmitting procedure of communication bus, because the antijamming capability of digital signal is stronger than analog electrical signal, this improves the antijamming capability of signals transmission signal, thus ensure that the quality of final display.
Concrete, as shown in Figure 4, above-mentioned data display equipment 21 comprises: microcontroller 211, second communication bus controller and display element, this display element is with the analog display element 2121 shown in Fig. 4, and/or digital display element 2122 is described for example, it can according to actual needs, display simulation signal, and/or digital signal; One end of above-mentioned microcontroller 211 is connected to described communication bus by described second communication bus controller; The other end of described microcontroller 211 is connected with above-mentioned display element, under the control of microcontroller 211, triggers the pressure on the number signal that above-mentioned display element display communication bus transmits.
Wherein, above-mentioned data display equipment 21 can be notebook computer, ipad or other portable electric appts, be mainly used in showing the pressure on the number signal that communication bus transmits, in embodiments of the present invention, the mode that the display of measurement data can adopt following two kinds of modes or two kinds of modes to combine, one measurement data can be shown in graph form by analog display element 2121, and convenient operation personnel check the situation of change of data intuitively; Another kind current data is shown with the form of numerical value by digital display element 2122, and convenient operation personnel read the numerical value of current measurement data accurately; Above two kinds of modes can both the data of display measurement in real time, and if adopt this two kinds of modes simultaneously, then the data of display can be made more comprehensive.In addition, those skilled in the art can expect also can adopting other modes, and any mode does not all affect technique effect of the present invention.The equivalent variations of aforesaid way or replacement, all should be encompassed within protection scope of the present invention.
Wherein, above-mentioned second communication bus controller, for the pressure on the number signal on communication bus being carried out protocol conversion and transferring to above-mentioned microcontroller 211, and process the conflict on communication bus, namely a communication bus controller is all set in the equipment of each incoming communication bus.
The embodiment of the present invention additionally provides another kind of pressure-measuring system, and this measuring system comprises above-mentioned device for pressure measurement, also comprises: outside equipment;
The equipment of said external comprises: at least one data recorder and at least one data display equipment 21;
Above-mentioned data recorder is connected on above-mentioned communication bus, for recording the pressure on the number signal that above-mentioned device for pressure measurement gathers;
Above-mentioned data display equipment 21 comprises: microcontroller 211, second communication bus controller, display element, wireless communication driver and keyboard; Above-mentioned display element comprises: analog display element 2121, and/or digital display element 2122; One end of above-mentioned microcontroller 211 is connected to above-mentioned communication bus by above-mentioned second communication bus controller; The other end of above-mentioned microcontroller 211 is connected with above-mentioned display element;
Above-mentioned wireless communication driver is connected with above-mentioned microcontroller 211, under the control of above-mentioned microcontroller 211, receives the pressure on the number signal that above-mentioned wireless communication module sends, shows above-mentioned pressure on the number signal by above-mentioned display element; Above-mentioned control signal, for receiving the control signal of operator by input through keyboard, is sent to above-mentioned microcontroller 211 by above-mentioned keyboard, and above-mentioned control signal is sent to above-mentioned device for pressure measurement by above-mentioned wireless communication driver by above-mentioned microcontroller 211.
It should be noted that, above-mentioned device for pressure measurement and system not only may be used for hydraulic fracturing and measure in the process of terrestrial stress, measure in the process of pressure under can also being used for other rigor environment.
Known based on above-mentioned analysis, compared with the pressure-measuring system in correlation technique, the measure portion of the pressure-measuring system that the embodiment of the present invention provides is by carrying out pressure survey by the mode that pressure transducer 11, signal conditioning circuit 12, analog to digital converter 13 and acquisition controller 14 integrate, improve the accuracy of measurement data, and by increasing storer 15, pressure on the number signal in acquisition controller 14 is carried out quick storage, to prevent missing measurement, ensure that the integrality of measurement data.Further, by arranging capacitor energy 16, in the unexpected power-off of extraneous electric power system or when occurring abnormal, the normal operation of measurement mechanism can be ensured; Further, by arranging isolation power supply component 17 between capacitor energy 16 and extraneous electric power system, the undesired signal that electric power system exports to external world is eliminated, and improves signals collecting precision and the quality of device for pressure measurement; In addition, the display section of pressure-measuring system is by adopting the mode of distributed display at the multiple data display equipment 21 of communication bus deploy, and the pressure data when pre-test carries out checking by the operator being convenient to different station, record.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In describing the invention, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this invention product orientation of usually putting or position relationship when using, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Last it is noted that the above embodiment, be only the specific embodiment of the present invention, in order to technical scheme of the present invention to be described, be not intended to limit, protection scope of the present invention is not limited thereto, although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: be anyly familiar with those skilled in the art in the technical scope that the present invention discloses, it still can be modified to the technical scheme described in previous embodiment or can expect change easily, or equivalent replacement is carried out to wherein portion of techniques feature, and these amendments, change or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.All should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.

Claims (8)

1. a device for pressure measurement, is characterized in that, described measurement mechanism comprises: the pressure transducer connected successively, signal conditioning circuit, analog to digital converter, acquisition controller and storer, and the capacitor energy be connected with extraneous electric power system;
Described pressure transducer gathers the pressure physical signalling of measured point, and described pressure physical signalling is converted into pressure simulation electric signal, by described pressure simulation electric signal transmission to described signal conditioning circuit;
Described signal conditioning circuit encourages and impedance matching process described pressure simulation electric signal, and the pressure simulation electric signal after output processing is to described analog to digital converter;
Described pressure simulation electric signal after process is converted to pressure on the number signal by described analog to digital converter, by described pressure on the number Signal transmissions to described acquisition controller;
Described pressure on the number signal is saved to described storer by described acquisition controller, by communication bus by equipment extremely outside for described pressure on the number Signal transmissions;
Described capacitor energy is all electrically connected with described pressure transducer, described signal conditioning circuit, described analog to digital converter, described acquisition controller and described storer, for described pressure transducer, described signal conditioning circuit, described analog to digital converter, described acquisition controller and described storer transmission of electric energy.
2. device for pressure measurement according to claim 1, is characterized in that, described measurement mechanism also comprises: isolation power supply component;
Described isolation power supply component is arranged between described capacitor energy and extraneous electric power system, for eliminating the undesired signal that described extraneous electric power system exports.
3. device for pressure measurement according to claim 1, is characterized in that, described measurement mechanism also comprises: the first communication bus controller;
Described first communication bus controller is connected with described acquisition controller, pressure on the number signal for exporting described acquisition controller carries out protocol conversion, the described pressure on the number signal after conversion is transferred to the equipment of described outside by described communication bus.
4. device for pressure measurement according to claim 1, is characterized in that, described communication bus is provided with multiple data output interface.
5. device for pressure measurement according to claim 1, is characterized in that, described measurement mechanism also comprises: wireless communication module;
Described wireless communication module is connected with mobile terminal with described acquisition controller respectively, is sent to described mobile terminal for the pressure on the number signal exported by described acquisition controller with the form of radio communication; Described wireless communication module also for receiving the control signal of operator's input that described mobile terminal sends, is arranged correlation parameter according to described control signal to make described acquisition controller.
6. device for pressure measurement according to claim 1, is characterized in that, described data acquisition unit acquisition controller is provided with following in one or more interfaces: HART interface, RS232 interface, USB interface.
7. a pressure-measuring system, is characterized in that, comprises the device for pressure measurement according to any one of claim 1 to 6, also comprises: outside equipment;
The equipment of described outside comprises: at least one data recorder and at least one data display equipment;
Described data recorder is connected on described communication bus, for recording the pressure on the number signal that described device for pressure measurement gathers;
Described data display equipment is distributed on described communication bus, for receive and show described device for pressure measurement transmission pressure on the number signal.
8. pressure-measuring system according to claim 7, is characterized in that, described data display equipment comprises: microcontroller, the second communication bus controller and display element, and described display element comprises: analog display element, and/or digital display element; One end of described microcontroller is connected to described communication bus by described second communication bus controller; The other end of described microcontroller is connected with described display element.
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CN109444803A (en) * 2018-11-20 2019-03-08 中国电力科学研究院有限公司 A kind of automatic calibration of electric energy meter system wiring column pressure test method and device
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CN114112171A (en) * 2021-12-07 2022-03-01 中国人民解放军63729部队 Automatic detection method and system for air supply interface pressure

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