CN105181218B - A kind of device for pressure measurement and system - Google Patents
A kind of device for pressure measurement and system Download PDFInfo
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- CN105181218B CN105181218B CN201510634505.8A CN201510634505A CN105181218B CN 105181218 B CN105181218 B CN 105181218B CN 201510634505 A CN201510634505 A CN 201510634505A CN 105181218 B CN105181218 B CN 105181218B
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Abstract
The invention provides a kind of device for pressure measurement and system, wherein, the device includes：Pressure sensor, signal conditioning circuit, analog-digital converter, acquisition controller and the memory being sequentially connected, and the capacitor energy being connected with extraneous electric power system.The embodiment of the present invention carries out pressure measxurement by the way that pressure sensor, signal conditioning circuit, analog-digital converter and acquisition controller are integrated into a module, improve the accuracy of measurement data, and by increasing memory, pressure on the number signal in acquisition controller is subjected to quick storage, simultaneously, also by increasing capacitor energy, extraneous electric power system is caused to provide emergency electric power supply in the case of powering off with severe in extraneous measuring environment, it is possible to achieve to prevent loss of data to greatest extent.
Description
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 for measuring crustal bathyderm rock mass crustal stress states, is current most heavy
One of internationally recognized In-situ stress measurements method wanted, therefore, it is widely used in geostress survey work.
Currently, a kind of pressure-measuring system is provided in correlation technique is mainly：In hydrofracturing measurement process, with one
Section is insulated to packer (can use single packer in the situation of bottom hole measurement) setting formed, using high-pressure hydraulic pump by drilling rod or
Person's high-pressure hose is pressurizeed to packing section with constant flow rate water filling, and the pressure-time curve recorded according to in-site measurement instrument judges
Cell wall rupture is produced or rupture is re-opened, and determines the key parameters such as closing presure, reopening pressure, measures the crustal stress letter of target location
Breath.Typically measuring system is operated by two or more operator in work on the spot, respectively operation note instrument and height
Water pump.Pressure sensor, flowmeter pass through cable connection to high speed acquisition instrument, gathered data transmission in current techniques application
Recorded to computer, be typically transmitted as analog signal, measurement accuracy, stability are poor, and high-pressure hydraulic pump distance calculation
Farther out, operator it is more difficult by pressure sensor gathered data come the working condition of controlling pump, can only be carried by high pressure cylinders
Pointer pressure pump operation switch, due to having intrinsic error, current mode between the measurement of different pressures table
It is unfavorable for the accurate control of measurement process.In addition, situ of drilling well is carried out in the wild for hydrofracturing test job, working environment compares
Badly, supply of electric power is unstable, and personnel are complicated, and pressure-measuring system is easily influenceed by many objective factors, causes data to be adopted
Collect Quality Down, or even missing measurement.
During the present invention is realized, inventor has found problems with least be present in correlation technique：Because pressure is surveyed
Amount system acquisition to data need to transmit and recorded into computer, and generally, entered in the form of analog signal
Row transmission, is easily influenceed by factors such as measuring environment, supplies of electric power, is easily interfered or loses in data transmission procedure
Lose, cause the data of record inaccurate or imperfect, so as to influence the quality and progress of follow-up whole survey engineering operation.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of device for pressure measurement and system, to solve correlation
Because the data that pressure-measuring system collects need to transmit to be recorded into computer in technology, and generally, with
The form of analog signal is transmitted, and is easily influenceed by factors such as measuring environment, supplies of electric power, in data transmission procedure easily
It is interfered or loses, cause the data of record inaccurate or imperfect, so as to influences follow-up whole survey engineering operation
Quality and progress.
In a first aspect, the embodiments of the invention provide a kind of device for pressure measurement, the device includes：The pressure being sequentially connected
Sensor, signal conditioning circuit, analog-digital converter, acquisition controller and memory, and be connected with extraneous electric power system
Capacitor energy；
The pressure physical signalling of the pressure sensor collection measured point, pressure mould is converted into by the pressure physical signalling
Intend electric signal, by the pressure simulation electric signal transmission to the signal conditioning circuit；
The signal conditioning circuit enters row energization and impedance matching processing, output processing to the pressure simulation electric signal
Pressure simulation electric signal afterwards is to the analog-digital converter；
The pressure simulation electric signal after processing is converted to pressure on the number signal by the analog-digital converter, by the pressure
Power digital data transmission is into the acquisition controller；
The acquisition controller preserves the pressure on the number signal to the memory, by communication bus by the pressure
Power digital data transmission to outside equipment；
The capacitor energy with the pressure sensor, signal conditioning circuit, the analog-digital converter, described
Acquisition controller and memory electrical connection, for the pressure sensor, the signal conditioning circuit, the mould
Number converter, the acquisition controller and memory conveying electric energy.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, on
Stating measurement apparatus also includes：Isolate power supply component, the isolation power supply component is arranged at the capacitor energy and extraneous power supply
Between system, for eliminating the interference signal of the extraneous electric power system output.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, on
Stating device also includes：First communication bus controller, the first communication bus controller are connected with the acquisition controller,
Pressure on the number signal for being exported to the acquisition controller carries out protocol conversion, by the pressure on the number signal after conversion
Transmitted by the communication bus to the equipment of the outside.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, on
State and multiple data output interfaces are provided with communication bus.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, on
Stating device also includes：Wireless communication module, the wireless communication module are connected with the acquisition controller and mobile terminal respectively
Connect, the pressure on the number signal for the acquisition controller to be exported is sent in the form of radio communication to the mobile terminal；
The wireless communication module is additionally operable to receive the control signal for operator's input that the mobile terminal is sent, so that the collection
Controller is configured according to the control signal to relevant parameter.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, on
State be provided with acquisition controller it is following in one or more interfaces：HART interfaces, RS232 interface, USB interface, Ke Yichuan
Defeated gathered data and control information.
Second aspect, the embodiment of the present invention additionally provide a kind of pressure-measuring system, and the measuring system includes above-mentioned pressure
Measurement apparatus, in addition to：Outside equipment；
The equipment of the outside includes：At least one data logger and at least one data display equipment；
The data logger is connected on the communication bus, for recording the pressure of the device for pressure measurement collection
Data signal；
The data display equipment is distributed on the communication bus, for being received in different station and showing that the pressure is surveyed
Measure the pressure on the number signal of device transmission.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of the first of second aspect, wherein, on
Stating data display equipment includes：Microcontroller, the second communication bus controller and display element, the display element include：Simulation
Formula display element, and/or digital display element；One end of the microcontroller is connected by the second communication bus controller
It is connected to the communication bus；The other end of the microcontroller is connected with the display element.
A kind of device for pressure measurement provided in an embodiment of the present invention and system, wherein, the measurement apparatus includes：It is sequentially connected
Pressure sensor, signal conditioning circuit, analog-digital converter, acquisition controller and memory, and with extraneous electric power system phase
The capacitor energy of connection, the capacitor energy to pressure sensor, signal conditioning circuit, analog-digital converter, acquisition controller,
And memory conveying electric energy；Acquisition controller preserves pressure on the number signal to memory, by communication bus by number pressure
Word signal is transmitted to the equipment of outside.The embodiment of the present invention by by pressure sensor, signal conditioning circuit, analog-digital converter and
Acquisition controller is integrated into a module and carries out pressure measxurement, improves the accuracy of measurement data, and deposit by increase
Reservoir, the pressure on the number signal in acquisition controller is subjected to quick storage, to prevent missing measurement, ensure that measurement number
According to integrality, meanwhile, also by increasing capacitor energy, cause extraneous electric power system to be broken with severe in extraneous measuring environment
Emergency electric power supply is provided in the case of electricity, it is possible to achieve prevent loss of data to greatest extent.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows a kind of structural representation for device for pressure measurement that the embodiment of the present invention is provided；
Fig. 2 shows the structural representation for another device for pressure measurement that the embodiment of the present invention is provided；
Fig. 3 shows a kind of structural representation for pressure-measuring system that the embodiment of the present invention is provided；
Fig. 4 shows the structural representation for the data display equipment that the embodiment of the present invention is provided.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.The present invention being generally described and illustrated herein in the accompanying drawings is real
Applying the component of example can be configured to arrange and design with a variety of.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
Need to transmit to enter into computer in view of the data collected due to pressure-measuring system in correlation technique be present
Row record, and generally, be transmitted in the form of analog signal, due to being influenceed by factors such as measuring environments, data
Easily it is interfered or loses in transmitting procedure, causes the data of record inaccurate or imperfect, it is follow-up whole so as to influence
The quality and progress of individual survey engineering operation.Based on this, the embodiments of the invention provide a kind of device for pressure measurement and system, under
Face is described by embodiment.
A kind of structural representation of device for pressure measurement as shown in Figure 1, the measurement apparatus include：The pressure being sequentially connected
Sensor 11, signal conditioning circuit 12, analog-digital converter 13, acquisition controller 14 and memory 15；
Above-mentioned pressure sensor 11 gathers the pressure physical signalling of measured point, and the pressure physical signalling is converted into pressure mould
Intend electric signal, by above-mentioned pressure simulation electric signal transmission to above-mentioned signal conditioning circuit 12；
Above-mentioned signal conditioning circuit 12 enters row energization to above-mentioned pressure simulation electric signal and impedance matching is handled, at output
Pressure simulation electric signal after reason is to above-mentioned analog-digital converter 13；
Above-mentioned pressure simulation electric signal after processing is converted to pressure on the number signal by above-mentioned analog-digital converter 13, will be above-mentioned
Pressure on the number signal is transmitted into above-mentioned acquisition controller 14；
Above-mentioned acquisition controller 14 preserves above-mentioned pressure on the number signal to above-mentioned memory 15, will be upper by communication bus
Pressure on the number signal is stated to transmit to the equipment of outside.
Wherein, above-mentioned pressure sensor 11 is mainly used to gather the pressure physical signalling of measured point and by pressure physical signalling
The electronic component of electric signal is converted to, the pressure sensor 11 can select diffusion silicon pressure sensor, diffused-silicon pressure sensing
Device main operational principle is：The pressure of measured point directly acts on the diaphragm of sensor (stainless steel or ceramics), produces diaphragm
The raw micro-displacement directly proportional to pressure medium, and then the resistance value of diffusion silicon sensor is changed and export and the resistance value
The corresponding electric signal of variable quantity；
Because the electric signal of above-mentioned pressure sensor 11 output is the electric signal corresponding with resistance change, analog-to-digital conversion
Device 13 can not directly be converted into pressure on the number signal, therefore, then by signal conditioning circuit 12 to pressure sensor 11 plus
Upper excitation, so that the corresponding electric signal of resistance change is converted to the corresponding electric signal of voltage value changes；In addition, work as pressure
When the output internal resistance of sensor 11 is bigger, being directly acquired by analog-digital converter 13 can be by larger interference, now
Impedance matching is carried out by signal conditioning circuit 12, the precision and antijamming capability of the collection of analog-digital converter 13 can be improved；
The analog voltage signal that signal conditioning circuit 12 transmits is converted to data signal by above-mentioned analog-digital converter 13, the mould
Number converter 13 can select high-precision 24 sigma-delta type analog-to-digital converter, wherein, the analog-digital converter 13 has dynamic model
Enclose the characteristics of high, signal resolution is high；
The pressure on the number signal that above-mentioned acquisition controller 14 receives and parses through the output of analog-digital converter 13 is cached to memory
15, the pressure on the number signal is recompiled into transmission to communication bus, communication bus order is received and reads specified cache contents hair
Communication bus is delivered to, plays contact modules in whole acquisition system, and provide should for state to modules or request
To the function of operation, performed according to user instruction to data acquisition, storage, the control of transfer process；Above-mentioned memory 15 is
High speed nonvolatile storage, can select high speed ferroelectric type memory, and type nonvolatile storage power-off keeps write-in content not
Change, and write data speed is high, it is possible to achieve quickly by the pressure on the number signal in acquisition controller 14 store standby
The function of part, the signal transmitted between acquisition controller 14 and memory 15 is the data frame for carrying timestamp, is passed in data
In the case of the existing exception of output or unexpected power-off, due to the data in acquisition controller 14 are quickly stored in into above-mentioned deposit
In reservoir 15, it is necessary to when checking this partial data, the data stored in above-mentioned memory 15 are accessed by communication bus, protected
The continuity and integrality of measurement data are demonstrate,proved.
Cause extraneous electric power system power-off or voltage instability because extraneous measuring environment is severe in view of there may be
Fixed phenomenon, based on this, as shown in figure 1, said apparatus also includes：The capacitor energy 16 being connected with extraneous electric power system,
Above-mentioned capacitor energy 16 with above-mentioned pressure sensor 11, above-mentioned signal conditioning circuit 12, above-mentioned analog-digital converter 13, above-mentioned
Acquisition controller 14 and above-mentioned memory 15 electrically connect, for above-mentioned pressure sensor 11, above-mentioned signal conditioning circuit
12nd, above-mentioned analog-digital converter 13, above-mentioned acquisition controller 14 and above-mentioned memory 15 convey electric energy.
Wherein, above-mentioned capacitor energy 16 can select super electric capacity energy storage means, and the capacitor energy 16 is a kind of new
Energy-accumulating element, have charging rate it is fast, it is memoryless, without leakage, it is reusable many advantages, such as, have load capacity strong
Feature, and do not influence power reservoir capacity in the case where long-time is deposited.Thus, during storage without periodic charge or periodically
Safeguard, there is extremely strong advantage in the wild or under harsh operating environment.
In embodiments of the present invention, by by pressure sensor 11, signal conditioning circuit 12, analog-digital converter 13 and collection
Controller 14 is integrated into a module and carries out pressure measxurement, improves the accuracy of measurement data, and store by increasing
Device 15, the pressure on the number signal in acquisition controller 14 is subjected to quick storage, with prevent due to data transfer occur it is abnormal and
Cause missing measurement, ensure that the integrality of measurement data；Meanwhile also by increasing capacitor energy 16, with the external world
Measuring environment is severe and causes extraneous electric power system to provide emergency electric power supply in the case of powering off, it is possible to achieve prevents to greatest extent
Only loss of data, therefore, the mode being combined using memory 15 with capacitor energy 16, can measuring system electric power,
In the case that exception occur in communication line or Survey Software, ensure the integrality of gathered data to greatest extent.
Further, in order to prevent the interference signal of extraneous electric power system interference data collection and processing procedure, such as Fig. 2
Shown, above-mentioned measurement apparatus also includes：Isolate power supply component 17, above-mentioned isolation power supply component 17 is arranged at above-mentioned capacitor energy
Between 16 and extraneous electric power system, for eliminating the interference signal of above-mentioned extraneous electric power system output, and then pressure measxurement is improved
The signal acquisition precision and quality of device.
In order to which the pressure on the number signal in acquisition controller 14 is transmitted to carrying out Distance Transmission farther out on communication bus, and
The conflict on communication bus is handled, said apparatus also includes：First communication bus controller, above-mentioned first communication bus controller
Electrically connected with above-mentioned acquisition controller 14, for the pressure on the number signal that above-mentioned acquisition controller 14 exports according to knowing in bus
Other standard carries out protocol conversion, and the above-mentioned pressure on the number signal after conversion is transmitted to said external by above-mentioned communication bus
Equipment.
In embodiments of the present invention, realized by above-mentioned communication bus controller between acquisition controller 14 and communication bus
The function of signaling protocol conversion, can be selected a variety of bus structures such as RS485 types, CAN types, ether net type as needed, wherein, by
There is the characteristics of low cost, small power consumption, laying facilitate in RS485 types and be widely used.
In order that the personnel at different station can check measurement data simultaneously, can be provided with above-mentioned communication bus more
Individual data output interface, wherein, the quantity of data output interface and distribution can be planned according to actual conditions, in every number
According to can connect a data display equipment 21 on output interface, for staff's real time inspection and/or measurement data is recorded,
Homologous pressure information can be shown in different station, enhances the ability that each station is coordinated in hydrofracturing measurement process.
Further, said apparatus also includes：Wireless communication module, above-mentioned wireless communication module respectively with above-mentioned collection control
Device 14 processed is connected with mobile terminal, for the pressure on the number signal that exports above-mentioned acquisition controller 14 with the shape of radio communication
Formula is sent to above-mentioned mobile terminal；Above-mentioned wireless communication module is additionally operable to receive operator's input that above-mentioned mobile terminal is sent
Control signal, so that above-mentioned acquisition controller 14 is configured according to control signal to relevant parameter, wherein, above-mentioned mobile terminal
It can be mobile phone or tablet personal computer ipad, can also be other portable electric appts.
Be also provided with above-mentioned acquisition controller 14 it is following in one or more interfaces：HART interfaces, RS232 connect
Mouthful, USB interface, in order to subsequently to test data uploading and downloading either when communication bus occur it is abnormal when, Ke Yili
With the data of above-mentioned interface transmission collection, device for pressure measurement can also be configured or firmware upgrade；
Understood based on above-mentioned analysis, compared with the device for pressure measurement in correlation technique, pressure provided in an embodiment of the present invention
Force measuring device is by the way that pressure sensor 11, signal conditioning circuit 12, analog-digital converter 13 and acquisition controller 14 are integrated in
Mode together carries out pressure measxurement, improves the accuracy of measurement data, and by increasing memory 15, by acquisition control
Pressure on the number signal in device 14 carries out quick storage, to prevent missing measurement, ensure that the integrality of measurement data.Enter
One step, by setting capacitor energy 16, measurement can be ensured when extraneous electric power system powers off or occurs abnormal suddenly
The normal operation of device；Further, by setting isolation power supply member between capacitor energy 16 and extraneous electric power system
Part 17, the interference signal of extraneous electric power system output is eliminated, improve the signal acquisition precision of device for pressure measurement with
Quality.
As shown in figure 3, the embodiment of the present invention also provides a kind of pressure-measuring system, wherein, the measuring system includes above-mentioned
Device for pressure measurement, in addition to：Outside equipment；
The equipment of said external includes：At least one data logger and at least one data display equipment 21, wherein, it is above-mentioned
Data logger can be that a notebook computer with bus control unit either industrial computer, the data logger are connected to institute
State on communication bus, for recording the pressure on the number signal of the device for pressure measurement collection；
Above-mentioned data display equipment 21 is distributed on above-mentioned communication bus, for receiving and showing that above-mentioned device for pressure measurement passes
Defeated pressure on the number signal.
Wherein, the acquisition controller 14 in above-mentioned device for pressure measurement by communication bus controller by pressure on the number signal
Transmit to communication bus, external equipment is connected with communication bus, the external equipment receives the pressure on the number letter on communication bus
Number, said external equipment can be that form is deployed in multiple data display equipments 21 on communication bus in a distributed manner, for showing
Measurement data, in order to operating personnel's real time inspection measurement data of different station or a portable computer or
Function of the computer with collection, storage, display data and curve after software is supported in person's industrial computer, installation.
In above-mentioned device for pressure measurement, multiple data output interfaces are disposed on communication bus, the data output interface
With same rank, the data output interface can connect a data display equipment 21, for showing on communication bus
Real-time stream；Data display equipment 21 is disposed on communication bus by the way of distribution is shown, is easy to the behaviour of different station
The pressure data currently measured is checked, recorded by work person.
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 and adopted
Collect end, pressure on the number signal is now only transmitted in the transmitting procedure of communication bus, due to the antijamming capability ratio of data signal
Analog electrical signal is strong, this improves the antijamming capability of signals transmission signal, so as to ensure that final display signal
Quality.
Specifically, as shown in figure 4, above-mentioned data display equipment 21 includes：Microcontroller 211, the second communication bus controller
And display element, the display element are with the analog display element 2121 shown in Fig. 4, and/or digital display element 2122
Example illustrates, and it can show analog signal, and/or data signal according to being actually needed；The one of above-mentioned microcontroller 211
End is connected to the communication bus by the second communication bus controller；The other end of the microcontroller 211 with it is above-mentioned
Display element connects, and under the control of microcontroller 211, triggers above-mentioned display element and shows the number pressure transmitted on communication bus
Word signal.
Wherein, above-mentioned data display equipment 21 can be notebook computer, ipad or other portable electric appts, mainly
For showing the pressure on the number signal transmitted on communication bus, in embodiments of the present invention, the display of measurement data can use
Following two modes mode that either two ways is combined, one kind will can be measured by analog display element 2121
Data show that personnel easy to operation intuitively check the situation of change of data in graph form；Another kind is by digital
Display element 2122 shows current data personnel easy to operation accurately read the number of current measurement data in the form of numerical value
Value；Both the above mode can real-time display measurement data, and if using both modes simultaneously, then can make display
Data it is more comprehensive.In addition, those skilled in the art, it is conceivable that other modes can also be used, any mode does not influence
The technique effect of the present invention.The equivalent variations of aforesaid way or replacement, it all should be included within the scope of the present invention.
Wherein, above-mentioned second communication bus controller, turn for the pressure on the number signal on communication bus to be carried out into agreement
Change and transmit to above-mentioned microcontroller 211, and handle the conflict on communication bus, i.e., in the equipment of each incoming communication bus
It is respectively provided with a communication bus controller.
The embodiment of the present invention additionally provides another pressure-measuring system, and the measuring system fills including above-mentioned pressure measxurement
Put, in addition to：Outside equipment；
The equipment of said external includes：At least one data logger and at least one data display equipment 21；
Above-mentioned data logger is connected on above-mentioned communication bus, for recording the pressure of above-mentioned device for pressure measurement collection
Data signal；
Above-mentioned data display equipment 21 includes：Microcontroller 211, the second communication bus controller, display element, radio communication
Driver and keyboard；Above-mentioned display element includes：Analog display element 2121, and/or digital display element 2122；It is above-mentioned
One end of microcontroller 211 is connected to above-mentioned communication bus by above-mentioned second communication bus controller；Above-mentioned microcontroller 211
The other end be connected with above-mentioned display element；
Above-mentioned wireless communication driver is connected with above-mentioned microcontroller 211, for the control in above-mentioned microcontroller 211
Under, the pressure on the number signal that above-mentioned wireless communication module is sent is received, shows that above-mentioned pressure on the number is believed by above-mentioned display element
Number；Above-mentioned keyboard is used to receive control signal of the operator by input through keyboard, and above-mentioned control signal is sent into above-mentioned micro-control
Above-mentioned control signal is sent to above-mentioned pressure measxurement by device 211 processed, above-mentioned microcontroller 211 by above-mentioned wireless communication driver
Device.
It should be noted that above-mentioned device for pressure measurement and system can be not only used for hydraulic fracturing measurement crustal stress
During, it can be also used for during measuring pressure under other rigor environment.
Understood based on above-mentioned analysis, compared with the pressure-measuring system in correlation technique, pressure provided in an embodiment of the present invention
The measurement part of force measuring system is by by pressure sensor 11, signal conditioning circuit 12, analog-digital converter 13 and acquisition control
The mode that device 14 integrates carries out pressure measxurement, improves the accuracy of measurement data, and by increasing memory 15,
Pressure on the number signal in acquisition controller 14 is subjected to quick storage, to prevent missing measurement, ensure that measurement data
Integrality.Further, by setting capacitor energy 16, in the power-off suddenly of extraneous electric power system or can occur abnormal
When, ensure the normal operation of measurement apparatus；Further, by being set between capacitor energy 16 and extraneous electric power system
Isolate power supply component 17, the interference signal of extraneous electric power system output is eliminated, improves the signal of device for pressure measurement
Acquisition precision and quality；In addition, the mode that the display portion of pressure-measuring system is shown by using distribution is in communication bus
The upper multiple data display equipments 21 of deployment, are easy to the operator of different station to check the pressure data currently measured, record.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (8)
1. a kind of device for pressure measurement, the measurement apparatus is used for water pressure supporing, it is characterised in that the measurement dress
Put including：Pressure sensor, signal conditioning circuit, analog-digital converter, acquisition controller and the memory being sequentially connected, Yi Jiyu
The capacitor energy that extraneous electric power system is connected, the memory are high speed ferroelectric type memory；
The pressure physical signalling of the pressure sensor collection measured point, the pressure physical signalling is converted into pressure simulation electricity
Signal, by the pressure simulation electric signal transmission to the signal conditioning circuit；
The signal conditioning circuit enters row energization and impedance matching processing to the pressure simulation electric signal, after output processing
Pressure simulation electric signal is to the analog-digital converter；
The pressure simulation electric signal after processing is converted to pressure on the number signal by the analog-digital converter, by the number pressure
Word signal is transmitted into the acquisition controller；
The acquisition controller preserves the pressure on the number signal to the memory, by communication bus by the number pressure
Word signal is transmitted to the equipment of outside；
The capacitor energy with the pressure sensor, the signal conditioning circuit, the analog-digital converter, the collection
Controller and memory electrical connection, for turning to the pressure sensor, the signal conditioning circuit, the modulus
Parallel operation, the acquisition controller and memory conveying electric energy.
2. device for pressure measurement according to claim 1, it is characterised in that the measurement apparatus also includes：Isolation power supply
Element；
The isolation power supply component is arranged between the capacitor energy and extraneous electric power system, for eliminating the extraneous confession
The interference signal of electric system output.
3. device for pressure measurement according to claim 1, it is characterised in that the measurement apparatus also includes：First communication
Bus control unit；
The first communication bus controller is connected with the acquisition controller, for the pressure exported to the acquisition controller
Power data signal carries out protocol conversion, and the pressure on the number signal after conversion is transmitted to described outer by the communication bus
The equipment in portion.
4. device for pressure measurement according to claim 1, it is characterised in that multiple data are provided with the communication bus
Output interface.
5. device for pressure measurement according to claim 1, it is characterised in that the measurement apparatus also includes：Radio communication
Module；
The wireless communication module is connected with the acquisition controller and mobile terminal respectively, for by the acquisition controller
The pressure on the number signal of output is sent in the form of radio communication to the mobile terminal；The wireless communication module is additionally operable to connect
The control signal for operator's input that the mobile terminal is sent is received, so that the acquisition controller is according to the control signal pair
Relevant parameter is configured.
6. device for pressure measurement according to claim 1, it is characterised in that be provided with the acquisition controller it is following in
One or more interfaces：HART interfaces, RS232 interface, USB interface.
A kind of 7. pressure-measuring system, it is characterised in that including the device for pressure measurement any one of claim 1 to 6,
Also include：Outside equipment；
The equipment of the outside includes：At least one data logger and at least one data display equipment；
The data logger is connected on the communication bus, for recording the pressure on the number of the device for pressure measurement collection
Signal；
The data display equipment is distributed on the communication bus, for receiving and showing the pressure of the device for pressure measurement transmission
Power data signal.
8. pressure-measuring system according to claim 7, it is characterised in that the data display equipment includes：Microcontroller,
Second communication bus controller and display element, the display element include：Analog display element, and/or digital display
Element；One end of the microcontroller is connected to the communication bus by the second communication bus controller；The micro-control
The other end of device processed is connected with the display element.
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| CN113984257A (en) * | 2021-10-28 | 2022-01-28 | 南京懂玫驱动技术有限公司 | Torque sensor and data processing method of torque sensor |
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| CN102095547A (en) * | 2010-11-25 | 2011-06-15 | 苏州工业园区广福汽保机电设备有限公司 | Digital manometer for accurately measuring pressure to be measured |
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