CN217902012U - Tool for calibrating direct current sensor - Google Patents
Tool for calibrating direct current sensor Download PDFInfo
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- CN217902012U CN217902012U CN202221953902.3U CN202221953902U CN217902012U CN 217902012 U CN217902012 U CN 217902012U CN 202221953902 U CN202221953902 U CN 202221953902U CN 217902012 U CN217902012 U CN 217902012U
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Abstract
The utility model relates to a frock for calibration of direct current sensor, including auto-change over device, multi-functional standard source, power supply, digital multi-purpose table and computer, characterized by auto-change over device includes signal switch and more than 3 by school sensor station, the passageway quantity of signal switch is corresponding with the quantity by school sensor station, the current output part of multi-functional standard source is connected with the current input part of each by school sensor station respectively, power supply's output respectively with each by the power input part of school sensor station be connected, each by the signal output part of school sensor station respectively with the signal input part of signal switch be connected, the signal output part and the digital multi-purpose table of signal switch are connected, the control signal input part and the computer of signal switch are connected, digital multi-purpose table and computer communication, multi-functional standard source and computer communication. The utility model has the advantages of being simple in structure and convenient in operation, can calibrate many sensors simultaneously and can prevent the maloperation.
Description
Technical Field
The utility model relates to a current sensor's calibration is a frock that is used for direct current sensor calibration particularly.
Background
The direct current sensor measures the direct current in the circuit in real time and converts the direct current into a standard direct current voltage signal for output. The direct current sensor has small volume and high accuracy, so that the direct current sensor is widely applied to production and life. The direct current sensor needs to be calibrated before use, the metering characteristics are that the quantity is large, the task is tight, and the existing calibration mode generally adopts manual metering: connecting each signal terminal of the direct current sensor with corresponding standard equipment and a power supply, and manually controlling the output and the closing of a standard signal source; manually recording the measurement data; calculating measurement error and measurement uncertainty; and issuing the certificate. The manual metering has the following disadvantages: only one sensor can be calibrated at a time, and due to complex wiring, signal lines are easily connected in a wrong way due to negligence of operators, and the operators and equipment are easily damaged. The whole calibration process not only takes long time and has low efficiency, but also causes data errors due to misoperation, error recording or error calculation caused by human factors.
The utility model provides an it is not enough to prior art's the aforesaid, the utility model provides a frock for calibration of direct current sensor, its simple structure, convenient operation, can calibrate many sensors simultaneously and can prevent the maloperation in order to guarantee that the test result is accurate and improve the work efficiency.
Disclosure of Invention
The utility model aims at providing a simple structure, convenient operation, can calibrate many sensors simultaneously and can prevent the frock that is used for direct current sensor calibration of maloperation.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a tool for calibrating a direct current sensor comprises a switching device, a multifunctional standard source, a power supply, a digital multimeter and a computer, and is characterized in that the switching device comprises a signal switcher and more than 3 calibrated sensor stations, the number of channels of the signal switcher corresponds to the number of the calibrated sensor stations, the current output end of the multifunctional standard source is respectively connected with the current input end of each calibrated sensor station, the output end of the power supply is respectively connected with the power input end of each calibrated sensor station, the signal output end of each calibrated sensor station is respectively connected with the signal input end of the signal switcher, the signal output end of the signal switcher is connected with the digital multimeter, the control signal input end of the signal switcher is connected with the computer, the digital multimeter is communicated with the computer, and the multifunctional standard source is communicated with the computer.
Further, the number of the calibrated sensor stations is 10.
Further, the power supply provides a DC15V operating voltage.
Furthermore, the digital multi-purpose meter is connected with the computer through a USB-to-RS 232 connecting line, and the multifunctional standard source is connected with the computer through a GPIB-USB-HS converter.
The working process of the utility model is as follows: connecting a power supply; installing the straightened current sensor on a position of the straightened current sensor, and butting each terminal of the straightened current sensor with each corresponding terminal of the position of the straightened current sensor; the power supply outputs DC15V working voltage, the computer controls the multifunctional standard source to output current signals, and controls the signal switching device to transmit the output voltage of each direct current sensor to the computer; the computer processes the data.
The utility model has the advantages of being simple in structure and convenient in operation.
Adopt the utility model discloses, can calibrate many sensors simultaneously and can prevent the maloperation to guarantee that the test result is true accurate, and obviously improve the work efficiency.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a circuit diagram for calibrating the dc current sensor according to the present invention.
In the figure, 1-switching device; 1.1-signal switch; 1.2-a calibrated sensor station; 2-a multifunctional standard source; 3-a power supply; 4-digital multimeter; 5-a computer.
Detailed Description
The present invention is described in further detail below with reference to the following drawings and specific examples, which should not be construed as limiting the invention.
The tooling for calibrating the direct current sensor comprises a switching device 1, a multifunctional standard source 2, a power supply 3, a digital multimeter 4 and a computer 5, wherein the switching device 1 comprises signal switchers 1.1 and more than 3 corrected sensor stations 1.2, the number of channels of the signal switchers 1.1 corresponds to the number of the corrected sensor stations 1.2, the current output ends of the multifunctional standard source 2 are respectively connected with the current input ends of the corrected sensor stations 1.2, the output end of the power supply 3 is respectively connected with the power input ends of the corrected sensor stations 1.2, the signal output end of each corrected sensor station 1.2 is respectively connected with the signal input end of the signal switcher 1.1, the signal output end of the signal switcher 1.1 is connected with the digital multimeter 4, the control signal input end of the signal switcher 1.1 is connected with the computer 5, the digital multimeter 4 is communicated with the computer 5, and the multifunctional standard source 2 is communicated with the computer 5.
The preferred embodiments are: in the scheme, the number of the calibrated sensor stations 1.2 is 10.
The preferred embodiments are: in the above scheme, the power supply 3 provides a DC15V operating voltage.
The preferred embodiments are: in the above scheme, the digital multi-purpose meter 4 is connected with the computer 5 through a USB-to-RS 232 connection line, and the multi-purpose standard source 2 is connected with the computer 5 through a GPIB-USB-HS converter.
Details not described in the present specification belong to the prior art known to those skilled in the art.
Claims (5)
1. The utility model provides a frock for calibration of direct current sensor, includes auto-change over device (1), multi-functional standard source (2), power supply (3), digital multimeter (4) and computer (5), its characterized in that: the switching device (1) comprises a signal switcher (1.1) and more than 3 calibrated sensor stations (1.2), the number of channels of the signal switcher (1.1) corresponds to the number of the calibrated sensor stations (1.2), the current output end of the multifunctional standard source (2) is respectively connected with the current input end of each calibrated sensor station (1.2), the output end of the power supply (3) is respectively connected with the power input end of each calibrated sensor station (1.2), the signal output end of each calibrated sensor station (1.2) is respectively connected with the signal input end of the signal switcher (1.1), the signal output end of the signal switcher (1.1) is connected with the digital multimeter (4), the control signal input end of the signal switcher (1.1) is connected with the computer (5), the digital multimeter (4) is communicated with the computer (5), and the multifunctional standard source (2) is communicated with the computer (5).
2. The tool for calibrating the direct current sensor according to claim 1, wherein: the number of the calibrated sensor stations (1.2) is 10.
3. The tool for calibration of a direct current sensor according to claim 1 or 2, characterized in that: the power supply (3) provides a DC15V working voltage.
4. The tool for calibration of a direct current sensor according to claim 1 or 2, characterized in that: the digital multimeter (4) is connected with the computer (5) through a USB-to-RS 232 connecting line, and the multifunctional standard source (2) is connected with the computer (5) through a GPIB-USB-HS converter.
5. The tool for calibration of a direct current sensor according to claim 3, wherein: the digital multi-purpose meter (4) is connected with the computer (5) through a USB-to-RS 232 connecting line, and the multi-functional standard source (2) is connected with the computer (5) through a GPIB-USB-HS converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221953902.3U CN217902012U (en) | 2022-07-27 | 2022-07-27 | Tool for calibrating direct current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221953902.3U CN217902012U (en) | 2022-07-27 | 2022-07-27 | Tool for calibrating direct current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217902012U true CN217902012U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221953902.3U Active CN217902012U (en) | 2022-07-27 | 2022-07-27 | Tool for calibrating direct current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217902012U (en) |
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2022
- 2022-07-27 CN CN202221953902.3U patent/CN217902012U/en active Active
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