CN107314786A - Transducer calibration device systems and method - Google Patents
Transducer calibration device systems and method Download PDFInfo
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- CN107314786A CN107314786A CN201710776537.0A CN201710776537A CN107314786A CN 107314786 A CN107314786 A CN 107314786A CN 201710776537 A CN201710776537 A CN 201710776537A CN 107314786 A CN107314786 A CN 107314786A
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- demarcation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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Abstract
The invention provides a kind of sensor calibration system and method, it is related to the technical field of transducer calibration, the system includes host computer, transducer calibration equipment and sensor to be calibrated；Host computer is communicated with transducer calibration equipment by bus, and sensor to be calibrated is electrically connected with transducer calibration equipment；Host computer is used for the demarcation order for receiving user's input, and demarcation order is issued into transducer calibration equipment；Sensor to be calibrated is arranged in demarcation storehouse, and demarcation is additionally provided with reference instrument in storehouse, for detecting the concentration value of marked gas in demarcation storehouse, and is sent to host computer；Host computer is used to receive the concentration value, and sends to transducer calibration equipment, to be demarcated to sensor to be calibrated.Sensor calibration system and method that the present invention is provided, in calibration process, the quantity of sensor to be calibrated is not influenceed by host computer interface, improves the demarcation efficiency of sensor.
Description
Technical field
The present invention relates to the technical field of transducer calibration, more particularly, to a kind of sensor calibration system and method.
Background technology
Sensor (Sensor) is a kind of common but critically important device, and it is measured various as defined in impression
Measure and be converted into according to certain rules the device or device of useful signal.Generally, the signal that sensor is received has faint
Low frequency signal, the amplitude of extraneous interference sometimes can exceed measured signal, therefore only calibrated sensing
Device just can confirm that whether the signal that it is exported is normal.
Traditional transducer calibration method is the serial ports and the one-to-one connection of sensor by computer, passes through AccessPort
Assistant's software is interacted with sensor, or, reference voltage is changed by the size for adjusting sensor potentiometer, measured in regulation
Reference voltage, and this mode can only once demarcate one, efficiency is low and workload is big, while being also required to technical professional
The staking-out work of line sensor can just be entered.
For the efficiency of the staking-out work that improves sensor, in the prior art, USB HUB side is generally connected using computer
Formula, expands out more USB interfaces, and each USB interface meets a USN and turns serial equipment, and each serial ports is connected with sensor, so
Afterwards by computer to access each USB interface produce come serial ports sensor is demarcated.But, unsuitable pair of this method
Sensor settings sequence number, and the USB HUB quantity that is connect by computer of quantity of the sensor of demarcation limited, to a certain degree
On limit the demarcation efficiency of sensor.
For the less efficient technical problem of the demarcation of sensor of the prior art, effective solve not yet is proposed at present
Scheme.
The content of the invention
In view of this, it is an object of the invention to provide a kind of sensor calibration system and method, to alleviate prior art
The less efficient technical problem of demarcation of middle sensor.
In a first aspect, the embodiments of the invention provide a kind of sensor calibration system, including：Host computer, transducer calibration
Equipment and sensor to be calibrated；
Host computer is communicated with transducer calibration equipment by bus, sensor to be calibrated and transducer calibration equipment
Electrical connection；
Host computer is used for the demarcation order for receiving user's input, and demarcation order is issued into transducer calibration equipment；
The sensor calibration facility is provided with multiple analog interfaces and demarcation storehouse, and each analog interface is used to and waited mark
Fixed sensor connection；
Sensor to be calibrated is arranged in demarcation storehouse, and demarcation preserves marked gas in storehouse；Demarcation is additionally provided with storehouse
Reference instrument, reference instrument is connected with host computer, for detecting the concentration value of marked gas in demarcation storehouse, and the concentration value is sent out
Deliver to host computer；
Host computer is additionally operable to receive the concentration value, and the concentration value is sent to transducer calibration equipment, with to be calibrated
Sensor demarcated.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, on
Host computer is stated to be communicated by RS485 buses with transducer calibration equipment.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, on
Stating transducer calibration equipment includes demarcation cell board；The demarcation cell board include ARM unit and CPLD units, ARM unit and
CPLD units are electrically connected；
Multiple analog interfaces are arranged on CPLD units, are connected with sensor to be calibrated；
ARM unit is connected with host computer, and for receiving the demarcation instruction that host computer is issued, demarcation instruction is transmitted to CPLD
Unit；
CPLD units are used to receive demarcation instruction, and sensor to be calibrated is demarcated according to demarcation instruction.
With reference to second of possible embodiment of first aspect, the embodiments of the invention provide the third of first aspect
Possible embodiment, wherein, above-mentioned ARM unit includes first serial；
The first serial is bus serial ports, and bus serial ports is connected with RS485 buses, so that ARM unit passes through RS485 buses
It is connected, and is communicated by RS485 buses with host computer.
With reference to second of possible embodiment of first aspect, the embodiments of the invention provide the 4th of first aspect kind
Possible embodiment, wherein, above-mentioned ARM unit also includes second serial；Above-mentioned ARM unit passes through the second serial and CPLD
Unit is connected.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, on
Demarcation storehouse is stated to close transparent lucite casing.
, can the embodiments of the invention provide the 6th of first party kind with reference to the 5th kind of possible embodiment of first aspect
The embodiment of energy, wherein, said system also includes blower fan；
The blower fan is used to input marked gas into casing, or, marked gas is discharged out of casing.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 7th of first aspect kind, wherein, on
The quantity for stating transducer calibration equipment is multiple, and multiple transducer calibration equipment are communicated with host computer by bus.
Second aspect, the embodiment of the present invention additionally provides a kind of transducer calibration method, and this method is applied to above-mentioned first
Sensor calibration system described in aspect, this method includes：Host computer obtains the concentration value of marked gas in demarcation storehouse, and to biography
Sensor calibration facility sends demarcation instruction；Transducer calibration equipment is received after demarcation instruction, is calculated according to the demarcation prestored
Method and concentration value are demarcated to sensor to be calibrated.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of the first of second aspect, wherein, on
State includes according to the calibration algorithm and concentration value prestored to sensor progress demarcation to be calibrated：
According to the concentration value gradient pre-set, pass through the concentration value of air-blower control marked gas；Obtain different gradients
Concentration value, the demarcation of many concentration is carried out to sensor to be calibrated.
The embodiment of the present invention brings following beneficial effect：
A kind of sensor calibration system provided in an embodiment of the present invention and method, make host computer lead to transducer calibration equipment
Bus is crossed to be communicated, meanwhile, transducer calibration equipment is provided with multiple analog interfaces, can connect with sensor to be calibrated
Connect, when host computer receives the demarcation order of user's input, demarcation order can be issued to transducer calibration equipment, so that
The transducer calibration equipment is demarcated to sensor to be calibrated, in calibration process, the quantity of sensor to be calibrated
Do not influenceed by host computer interface, improve the demarcation efficiency of sensor.
Other features and advantages of the present invention will be illustrated in the following description, also, partly be become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
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
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those skilled in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structured flowchart of sensor calibration system provided in an embodiment of the present invention；
Fig. 2 is the structured flowchart of another sensor calibration system provided in an embodiment of the present invention；
Fig. 3 is a kind of structured flowchart for demarcating cell board provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of transducer calibration method provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those skilled in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
For ease of understanding the present embodiment, first to a kind of sensor calibration system disclosed in the embodiment of the present invention
Describe in detail.
Embodiment one：
The embodiments of the invention provide a kind of sensor calibration system, a kind of sensor calibration system as shown in Figure 1
Structured flowchart, the system includes：Host computer 101, transducer calibration equipment 102 and sensor 103 to be calibrated；Wherein, on this
Position machine is communicated with transducer calibration equipment by bus, and sensor to be calibrated is electrically connected with transducer calibration equipment；
When implementing, above-mentioned host computer is used for the demarcation order for receiving user's input, and demarcation order is issued into sensing
Device calibration facility；Transducer calibration device sensor calibration facility be provided with multiple analog interfaces and demarcation storehouse (analog interface and
Demarcate storehouse not shown in Fig. 1), each analog interface is used to be connected with sensor to be calibrated, and sensor to be calibrated is set
Put in demarcation storehouse, demarcation preserves marked gas in storehouse；Demarcation is additionally provided with reference instrument, reference instrument and host computer in storehouse
Connection, for detecting the concentration value of marked gas in demarcation storehouse, and concentration value is sent to host computer；
Host computer is additionally operable to receive above-mentioned concentration value, and above-mentioned concentration value is sent to transducer calibration equipment, to treat
The sensor of demarcation is demarcated.
A kind of sensor calibration system provided in an embodiment of the present invention, makes host computer pass through bus with transducer calibration equipment
Communicated, meanwhile, transducer calibration equipment is provided with multiple analog interfaces, can be connected with sensor to be calibrated, when
When host computer receives the demarcation order of user's input, demarcation order can be issued to transducer calibration equipment, so that described
Transducer calibration equipment is demarcated to sensor to be calibrated, in calibration process, the quantity of sensor to be calibrated not by
The influence of host computer interface, improves the demarcation efficiency of sensor.
Embodiment two：
In actual use, the quantity of the sensor calibration facility be it is multiple, multiple transducer calibration equipment with it is upper
Position machine is communicated by bus, further, and the quantity of the sensor to be calibrated of each transducer calibration equipment connection is also
It is multiple.
Based on this, the embodiment of the present invention additionally provides another sensor calibration system, another sensing as shown in Figure 2
The structured flowchart of device calibration system, the system includes host computer 101, in addition to multiple transducer calibration equipment 102 and multiple treats
The sensor 103 of demarcation.
It should be appreciated that for convenience of description, in the structured flowchart of the sensor calibration system shown in Fig. 2, transducer calibration
Equipment illustrate only three, wherein, the quantity of the sensor to be calibrated of each transducer calibration equipment connection is two,
When actual use, the quantity of the sensor calibration facility and sensor to be calibrated can connect number no more than maximum
In the case of amount, it is configured according to actual use situation, the embodiment of the present invention is not limited to this.
For example, when the quantity of transducer calibration equipment is 32, and each transducer calibration equipment connection is to be calibrated
When the quantity of sensor is 20, using the sensor calibration system, 640 sensors to be calibrated can be once demarcated,
It is effectively improved the demarcation efficiency of sensor.
Preferably, above-mentioned host computer is communicated with transducer calibration equipment by RS485 buses, when transducer calibration is set
When having multiple, each transducer calibration equipment is communicated with host computer by RS485 buses.
Specifically, the sensor calibration facility includes demarcation cell board；Fig. 3 shows a kind of structure for demarcating cell board
Block diagram, as shown in figure 3, above-mentioned demarcation cell board includes ARM (Advanced RISC Machines, risc microcontroller) unit
300 and CPLD (Complex Programmable Logic Device, CPLD) unit 301, ARM is mono-
Member and the electrical connection of CPLD units；CPLD units are provided with multiple analog interfaces, and analog interface 301a as shown in Figure 3, simulation connect
Mouth 301b ... analog interfaces 301n, multiple analog interfaces are arranged on CPLD units, and each analog interface is used to and waited mark
Fixed sensor connection.
Wherein, CPLD units be it is a kind of can according to being actually needed for user the voluntarily digital integration of constitutive logic function
Circuit, its basic design method is, by Integrated Development software platform, with methods such as schematic diagram, hardware description languages, to generate phase
Code, is sent in objective chip, realizes the numeral of design by the file destination answered by download cable (being programmed in " system ")
System, therefore, calibration algorithm and demarcation that the CPLD units in the embodiment of the present invention can be specified according to the setting storage of user
Program, when receiving the instruction that host computer is issued, such as after demarcation instruction, automatic running and can enter to sensor to be calibrated
Rower is determined, and its calibration algorithm and calibrating procedure can be configured according to actual use demand, or with reference to of the prior art
Related data realizes that the embodiment of the present invention is not limited to this.
ARM unit is connected with host computer, and for receiving the demarcation instruction that host computer is issued, demarcation instruction is transmitted to CPLD
Unit；CPLD units are used to receive demarcation instruction, and sensor to be calibrated is demarcated according to demarcation instruction.
Preferably, above-mentioned ARM unit include first serial 300a, the first serial be bus serial ports, bus serial ports with
RS485 buses are connected, so that ARM unit is connected by RS485 buses with host computer, and are communicated by RS485 buses.
Further, above-mentioned ARM unit also includes second serial 300b；ARM unit passes through second serial 300b and CPLD
Unit is connected.
Further, above-mentioned demarcation cell board also includes ID (Identification) allocation unit 302, the ID allocation units
302 are connected with ARM unit and CPLD units respectively, for distributing the id information of demarcation cell board, and are connected to CPLD units
Sensor to be calibrated id information, such host computer just can be by demarcating the id information of cell board and each to be calibrated
The id information of sensor has access to specific sensor to be calibrated, is checked with the demarcation situation to sensor to be calibrated
And management.
Preferably, transparent lucite casing is is closed in above-mentioned demarcation storehouse, for example, acrylic casing, " acrylic " is
One phonemic loans, English is ACRYLIC, and it is a kind of chemical material, and chemical name is called " PMMA " category polyacrylate, is commonly called as
" lucite Jing Guo specially treated ", in application industry, the raw material of acrylic are general in forms such as particle, sheet material, tubing
Occur, acrylic is also known as the lucite of specially treated, be lucite regeneration product, the lamp box made of acrylic has saturating
Optical property is good, pure color, rich color, it is attractive in appearance it is smooth, take into account two kinds of effects of night on daytime, service life length, do not influence to make
The features such as using.
Need to demarcate gas sensor in view of the transducer calibration equipment described in the embodiment of the present invention, it is demarcated
The concentration requirement of gas has controllability, therefore, is set for the ease of the marked gas concentration to sensor box house,
Above-mentioned box house is additionally provided with blower fan, specifically, and the blower fan is arranged in demarcation storehouse；Blower fan is used to input institute into demarcation storehouse
Marked gas is stated, or, the marked gas is discharged out of described demarcation storehouse, above-mentioned standard instrument can be normal concentration sensing
Device, can detect the concentration value of marked gas, and concentration value is uploaded into host computer, so that concentration value is issued to mark by host computer
Determine cell board, demarcation cell board is received after concentration value according to concentration value and sensor to be calibrated is demarcated.
A kind of sensor calibration system provided in an embodiment of the present invention, makes host computer pass through bus with transducer calibration equipment
Communicated, when host computer receives the demarcation order of user's input, demarcation order can be issued to transducer calibration and set
It is standby, so that the transducer calibration equipment is demarcated to sensor to be calibrated, in calibration process, sensor to be calibrated
Quantity do not influenceed by host computer interface, improve the demarcation efficiency of sensor.
Embodiment three：
On the basis of above-described embodiment, the embodiment of the present invention additionally provides a kind of transducer calibration method, and this method should
For the sensor calibration system described in above-described embodiment one or embodiment two, a kind of transducer calibration method as shown in Figure 4
Flow chart, comprise the following steps：
Step S402, host computer obtains the concentration value of marked gas in demarcation storehouse, and sends mark to transducer calibration equipment
Fixed instruction；
Wherein, the reference instrument that the concentration value of marked gas can be set by demarcating in storehouse in the demarcation storehouse is read
Take；
Step S404, transducer calibration equipment is received after demarcation instruction, according to the calibration algorithm that prestores and dense
Angle value is demarcated to sensor to be calibrated.
Specifically, above-mentioned steps S104 includes procedure below：(1), according to the concentration value gradient pre-set, blower fan is passed through
Control the concentration value of marked gas；(2) concentration value of different gradients is obtained, the mark of many concentration is carried out to sensor to be calibrated
It is fixed.
Preferably, when the quantity of above-mentioned sensor to be calibrated is multiple, the above method also includes：Judge above-mentioned to wait to mark
All whether demarcation is completed fixed sensor, if it is, the information that host computer output demarcation is completed, if not, continuing under demarcating
One sensor to be calibrated.
Transducer calibration equipment provided in an embodiment of the present invention, a kind of sensor calibration system provided with above-described embodiment
With identical technical characteristic, so can also solve identical technical problem, identical technique effect is reached.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the method for foregoing description
Specific work process, may be referred to the corresponding process in previous embodiment, will not be repeated here.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.To those skilled in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
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, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
Finally it should be noted that：Above example, is only the embodiment of the present invention, the skill to illustrate the present invention
Art scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although entering with reference to the foregoing embodiments to the present invention
Go detailed description, it should be understood by those skilled in the art that：Any one skilled in the art takes off in the present invention
In the technical scope of dew, it can still modify to the technical scheme described in previous embodiment or can readily occur in change
Change, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make relevant art
Scheme essence depart from technical scheme of the embodiment of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of sensor calibration system, it is characterised in that including：Host computer, transducer calibration equipment and sensing to be calibrated
Device；
The host computer is communicated with the transducer calibration equipment by bus, and the sensor to be calibrated is passed with described
Sensor calibration facility is electrically connected；
The host computer is used for the demarcation order for receiving user's input, and the demarcation order is issued into the transducer calibration sets
It is standby；
The transducer calibration equipment is provided with multiple analog interfaces and demarcation storehouse；
Each analog interface is used to be connected with the sensor to be calibrated；
The sensor to be calibrated is arranged in the demarcation storehouse, and marked gas is preserved in the demarcation storehouse；The demarcation
Reference instrument is additionally provided with storehouse, the reference instrument is connected with the host computer, for detecting the mark in the demarcation storehouse
Determine the concentration value of gas, and the concentration value is sent to the host computer；
The host computer is additionally operable to receive the concentration value, and the concentration value is sent to the transducer calibration equipment, with
The sensor to be calibrated is demarcated.
2. system according to claim 1, it is characterised in that the host computer passes through with the transducer calibration equipment
RS485 buses are communicated.
3. system according to claim 1, it is characterised in that the transducer calibration equipment includes demarcation cell board；
The demarcation cell board includes ARM unit and CPLD units, the ARM unit and CPLD units electrical connection；
Multiple analog interfaces are arranged on the CPLD units, are connected with the sensor to be calibrated；
The ARM unit is connected with the host computer, for receiving the demarcation instruction that the host computer is issued, by the mark
Fixed instruction is transmitted to the CPLD units；
The CPLD units are used to receive the demarcation instruction, and the sensor to be calibrated is carried out according to the demarcation instruction
Demarcation.
4. system according to claim 3, it is characterised in that the ARM unit includes first serial；
The first serial is bus serial ports, and the bus serial ports is connected with RS485 buses, so that the ARM unit passes through institute
State RS485 buses to be connected with the host computer, and communicated by the RS485 buses.
5. system according to claim 3, it is characterised in that the ARM unit also includes second serial；
The ARM unit is connected by the second serial with the CPLD units.
6. system according to claim 1, it is characterised in that the demarcation storehouse is the transparent lucite casing of closing.
7. system according to claim 6, it is characterised in that the system also includes blower fan, the blower fan is arranged on institute
State in demarcation storehouse；
The blower fan is used to input the marked gas into the demarcation storehouse, or, discharge the mark out of described demarcation storehouse
Determine gas.
8. system according to claim 1, it is characterised in that the quantity of the transducer calibration equipment be it is multiple, it is multiple
The transducer calibration equipment is communicated with the host computer by bus.
9. a kind of transducer calibration method, it is characterised in that methods described is applied to the biography described in any one of claim 1~8
Sensor calibration system, methods described includes：
Host computer obtains the concentration value of marked gas in demarcation storehouse, and sends demarcation instruction to transducer calibration equipment；
The transducer calibration equipment is received after the demarcation instruction, according to the calibration algorithm and the concentration prestored
Value is demarcated to the sensor to be calibrated.
10. method according to claim 9, it is characterised in that calibration algorithm that the basis is prestored and described
Concentration value carries out demarcation to the sensor to be calibrated to be included：
According to the concentration value gradient pre-set, pass through the concentration value of marked gas described in air-blower control；
The concentration value of different gradients is obtained, the demarcation of many concentration is carried out to the sensor to be calibrated.
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| CN201710776537.0A CN107314786A (en) | 2017-08-31 | 2017-08-31 | Transducer calibration device systems and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109827642A (en) * | 2019-03-29 | 2019-05-31 | 宁夏隆基宁光仪表股份有限公司 | A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication |
| CN110308192A (en) * | 2019-06-12 | 2019-10-08 | 重庆川仪自动化股份有限公司 | Demarcate method, apparatus, storage medium and the electric terminal of dissolved oxygen measuring device |
| CN114252101A (en) * | 2021-12-21 | 2022-03-29 | 南京英锐创电子科技有限公司 | Calibration control equipment, method and system |
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