CN206470019U - A kind of magnetic flux integrating capacitor error-compensating apparatus - Google Patents
A kind of magnetic flux integrating capacitor error-compensating apparatus Download PDFInfo
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- CN206470019U CN206470019U CN201621400123.5U CN201621400123U CN206470019U CN 206470019 U CN206470019 U CN 206470019U CN 201621400123 U CN201621400123 U CN 201621400123U CN 206470019 U CN206470019 U CN 206470019U
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Abstract
The utility model is related to a kind of magnetic flux integrating capacitor error-compensating apparatus, belongs to cable force monitoring industry field.It includes magnetic flux transducer, integrating resistor, integrating capacitor, operational amplifier, microprocessor, eeprom memory；The output induced signal of the magnetic flux transducer is connected with integrating resistor, and integrating resistor is connected with operational amplifier, and operational amplifier is connected with microprocessor, and microprocessor is connected with eeprom memory；The integrating resistor and integrating capacitor are all connected with microprocessor.Microcontroller of the present utility model is by reading the configuration information in configuration module, voltage signal after integration is compensated, eliminate equipment otherness caused by integrating capacitor nominal error so that the equipment after compensation maintains uniformity, improve the practicality of system.
Description
Technical field
The utility model is related to a kind of magnetic flux integrating capacitor error-compensating apparatus, belongs to cable force monitoring industry field.
Background technology
Magnetic flux transducer is made of the magnetoelasticity principle based on ferrimagnet.I.e. when ferrimagnet bear it is outer
When boundary's mechanical load changes, its internal magnetic conductivity changes, by the magnetic for measuring the component that ferrimagnet is made
Conductance changes, to determine the internal force of component.
Magnetic flux transducer is made up of excitation coil, induction coil.Magnetic flux transducer punching is enclosed on into cable materials to enter
During row measurement, make to produce pulse current in excitation coil by driving source, cable is magnetized, pulse can be produced in the longitudinal direction of component
Magnetic field.Due to electromagnetic induction, induced voltage is produced in induction coil, induced voltage can obtain cable materials to time integral
Magnetic conductivity changes.Magnetic flux harvester can direct measurement obtain integral voltage, formed by integrated voltage value with Suo Li sizes
Linear relationship draw cable stressing conditions.
In the design phase of integrating circuit, it can be designed from the higher electric capacity of nominal accuracy, resistance, but the essence of electric capacity
Degree often can only achieve 5% ~ 10% nominal accuracy, and capacitance it is bigger when, its precision be more difficult to ensure.Traditional approach occur as soon as because
The equipment difference that the difference of integrating capacitor is brought.Harvester used in the sensor of different batches is caused not to be multiplexed, only
One-to-one can individually it support the use, with significant limitation.
The content of the invention
The purpose of this utility model is to provide a kind of magnetic flux integrating capacitor error-compensating apparatus, and the utility model will be solved
Technical problem certainly is that：Microcontroller can carry out error compensation according to configuration information when dispatching from the factory in collection.
In order to solve the above technical problems, the following technical scheme that the utility model is used：
A kind of magnetic flux integrating capacitor error-compensating apparatus, it include magnetic flux transducer, integrating resistor, integrating capacitor,
Operational amplifier, microprocessor, eeprom memory；
The output induced signal of the magnetic flux transducer is connected with integrating resistor, and integrating resistor connects with operational amplifier
Connect, operational amplifier is connected with microprocessor, microprocessor is connected with eeprom memory；
The integrating resistor and integrating capacitor are all connected with microprocessor.Output sense of the integrating circuit to magnetic flux transducer
Induction signal is integrated.
Eeprom memory is used for the information for storing integrating capacitor when dispatching from the factory.It is right by the ratio with master sample capacitance
Integrated voltage value carries out proportional compensation, so as to eliminate the difference that nominal error is brought, it is ensured that the uniformity of product.
Because magnetic flux Acquisition Instrument mainly carries out hardware integral operation when gathering induced signal to sensor sensing signal,
And integrating circuit basic model is charged for integrated signal by integrating resistor to integrating capacitor, integrating resistor, the ginseng of electric capacity
Number determines the constant of integrating circuit.The precision of general resistance can reach 0.1%, meet design requirement.This compensation method is mainly right
Integrating capacitor nominal error is compensated.
In order to realize according to configuration information automatic compensation function, the utility model make use of microcontroller and EEPROM to join
Number memory module, main actual capacitance Cx information and the time of making the product for storing integrating capacitor wherein in parameter configuration module.
And when equipment is dispatched from the factory, it is all go out plant and fixed same standard model machine carry out contrast test, used in standard model machine
Integrating capacitor is Cref, is fitted, is compensated according to the data tested under two kinds of capacitance differences, and different test conditions
COEFFICIENT K c1, and will be stored in penalty coefficient Kc1 setting write-ins EEPROM.Carried out during follow-up collection every time using this coefficient
Compensation calculation, it is final plant compared to canonical reference model machine, to be consistent.
The beneficial effects of the utility model：
Microcontroller of the present utility model is entered by reading the configuration information in configuration module to the voltage signal after integration
Row compensation, eliminates equipment otherness caused by integrating capacitor nominal error so that the equipment after compensation maintains uniformity,
Improve the practicality of system.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Embodiment
1 pair of the utility model is described in detail below in conjunction with the accompanying drawings：
A kind of magnetic flux integrating capacitor error-compensating apparatus, it includes magnetic flux transducer 1, integrating resistor 2, integrating capacitor
3rd, operational amplifier 4, microprocessor 5, eeprom memory 6；
The output induced signal of the magnetic flux transducer 1 is connected with integrating resistor 2, integrating resistor 2 and operational amplifier 4
Connection, operational amplifier 4 is connected with microprocessor 5, and microprocessor 5 is connected with eeprom memory 6；
The integrating resistor 2 and integrating capacitor 3 are all connected with microprocessor 5.Integrating circuit is to the defeated of magnetic flux transducer
Go out induced signal to be integrated.
Eeprom memory 6 is used for the information for storing integrating capacitor when dispatching from the factory；
By the ratio with master sample capacitance, proportional compensation is carried out to integrated voltage value, so as to eliminate nominal error band
The difference come, it is ensured that the uniformity of product.
Because magnetic flux Acquisition Instrument mainly carries out hardware integral operation when gathering induced signal to sensor sensing signal,
And integrating circuit basic model is charged for integrated signal by integrating resistor to integrating capacitor, integrating resistor, the ginseng of electric capacity
Number determines the constant of integrating circuit.The precision of general resistance can reach 0.1%, meet design requirement.This compensation device is mainly right
Integrating capacitor nominal error is compensated.
In order to realize according to configuration information automatic compensation function, the utility model make use of microcontroller and EEPROM to join
Number memory module, main actual capacitance Cx information and the time of making the product for storing integrating capacitor wherein in parameter configuration module.
And when equipment is dispatched from the factory, it is all go out plant and fixed same standard model machine carry out contrast test, used in standard model machine
Integrating capacitor is Cref, is fitted, is compensated according to the data tested under two kinds of capacitance differences, and different test conditions
COEFFICIENT K c1, and will be stored in penalty coefficient Kc1 setting write-ins EEPROM.Carried out during follow-up collection every time using this coefficient
Compensation calculation, it is final plant compared to canonical reference model machine, to be consistent.
Claims (2)
1. a kind of magnetic flux integrating capacitor error-compensating apparatus, it is characterised in that：It includes magnetic flux transducer (1), integration electricity
Resistance（2）, integrating capacitor（3）, operational amplifier（4）, microprocessor（5）, eeprom memory（6）；
The output induced signal and integrating resistor of the magnetic flux transducer (1)（2）Connection, integrating resistor（2）With operation amplifier
Device（4）Connection, operational amplifier（4）With microprocessor（5）Connection, microprocessor（5）With eeprom memory（6）Connection；
The integrating resistor（2）And integrating capacitor（3）All with microprocessor（5）Connection.
2. magnetic flux integrating capacitor error-compensating apparatus according to claim 1, it is characterised in that：Eeprom memory
（6）The information of integrating capacitor when being dispatched from the factory for storing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400123.5U CN206470019U (en) | 2016-12-20 | 2016-12-20 | A kind of magnetic flux integrating capacitor error-compensating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621400123.5U CN206470019U (en) | 2016-12-20 | 2016-12-20 | A kind of magnetic flux integrating capacitor error-compensating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206470019U true CN206470019U (en) | 2017-09-05 |
Family
ID=59711870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621400123.5U Active CN206470019U (en) | 2016-12-20 | 2016-12-20 | A kind of magnetic flux integrating capacitor error-compensating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206470019U (en) |
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2016
- 2016-12-20 CN CN201621400123.5U patent/CN206470019U/en active Active
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