CN209656871U - A kind of power measurement calibration apparatus and system - Google Patents
A kind of power measurement calibration apparatus and system Download PDFInfo
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- CN209656871U CN209656871U CN201920169296.8U CN201920169296U CN209656871U CN 209656871 U CN209656871 U CN 209656871U CN 201920169296 U CN201920169296 U CN 201920169296U CN 209656871 U CN209656871 U CN 209656871U
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Abstract
The utility model provides a kind of power measurement calibration apparatus and system, and device includes power module, control module, power measurement module, load blocks and display module；Power module is connect with the control module, power measurement module, load blocks and display module；Power measurement module includes current signal input interface, voltage signal input interface and communication interface, for being connect with measurement equipment to be checked to detect the voltage and current of measurement equipment to be checked, power measurement module is connect by the communication interface with the control module for current signal input interface and voltage signal input interface；The apparatus structure is simple, can be realized measurement, self calibration and external equipment calibration function.
Description
Technical field
The utility model relates to field of measuring technique more particularly to a kind of power measurement calibration apparatus and systems.
Background technique
Often function is more single for currently used power-measuring device, is only able to achieve the survey of power, voltage, electric current
Amount, calibration trouble, is not able to satisfy the testing requirement of equipment.
Utility model content
The purpose of this utility model is that being mentioned aiming at the problem that above-mentioned power-measuring device in the prior art has a single function
A kind of power measurement calibration apparatus and system out can satisfy the power test demand of equipment.
A kind of power measurement calibration device, including power module, control module, power measurement module, load blocks and
Display module；
The power module is connect with the control module, power measurement module, load blocks and display module；
The power measurement module includes current signal input interface, voltage signal input interface and communication interface, institute
Current signal input interface and voltage signal input interface are stated for being connect with measurement equipment to be checked to detect the electricity of measurement equipment to be checked
Pressure and electric current, the power measurement module are connect by the communication interface with the control module；
The control module includes reference instrument interface and external equipment calibration interface, and the reference instrument interface is for connecting
Connect reference instrument, the external apparatus interface for connecting external equipment to be calibrated, the control module also with the load mould
Block connection, the current signal input interface and voltage signal input interface are also used to connect with the load blocks, described negative
Module is carried also to connect with the reference instrument or external equipment to be calibrated；
The control module is also connect with the display module, and the display module is for showing measurement result.
Further, the power module includes LM1117-5V power conversion chip and LM1117-3.3V power supply conversion core
Piece, the LM1117-5V power conversion chip are used to for supply voltage being converted into 5V voltage signal, the LM1117-3.3V electricity
Source conversion chip is used to supply voltage being converted into 3.3V voltage signal.
Further, the power measurement module is CSE7766 chip.
Further, the power connector end of the CSE7766 chip is provided with the first filter capacitor and the second filter capacitor.
Further, the load blocks include multichannel loading and multiple relays, and the control module is also used to pass through
The on-off of relay is controlled to control the access of load.
Further, the relay is HK32F-G-005-HS.
Further, the display module is UG-2864HSWEG01 display screen.
Further, the control module is STM32F103RCT6 main control chip.
Further, described device further includes key module, is used for switching working mode.
A kind of power measurement calibration system further includes measurement equipment to be checked including above-mentioned power measurement calibration device, or
Reference instrument, or external equipment to be calibrated.
Power measurement calibration apparatus and system provided by the utility model, structure is simple, on the one hand can carry out to itself
Calibration guarantees the accuracy and precision of itself measurement, on the other hand can also calibrate to external equipment, to external equipment
Accuracy is corrected, and guarantees its accuracy and precision, and the electric current, voltage and power that can additionally treat detection device carry out
Detection, the precision and accuracy of detection are high, which can satisfy the testing requirement of plurality of devices.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of power measurement calibration device provided by the invention.
Fig. 2 is the connection schematic diagram of power measurement calibration device self-calibration mode provided by the invention.
Fig. 3 is the connection schematic diagram of power measurement calibration device external calibration mode provided by the invention.
Fig. 4 is the structural schematic diagram of power measurement module in power measurement calibration device provided by the invention.
Specific embodiment
To keep the purpose of this utility model, technical solution and effect clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only practical to explain
It is novel, it is not used to limit the utility model.
Embodiment one
With reference to Fig. 1-Fig. 3, the present embodiment provides a kind of power measurement calibration devices, including power module 101, control module
102, power measurement module 103, load blocks 104 and display module 105；
Power module 101 and control module 102, power measurement module 103, load blocks 104 and display module 105 connect
It connects；
Power measurement module 103 includes current signal input interface, voltage signal input interface and communication interface, electric current
Signal input interface and voltage signal input interface with measurement equipment 200 to be checked for connecting to detect the electricity of measurement equipment 200 to be checked
Pressure and electric current, power measurement module 103 are connect by communication interface with control module 102；
Control module 102 includes reference instrument interface and external equipment calibration interface, and reference instrument interface is for connecting mark
Quasi- instrument 300, external apparatus interface also connect with load blocks 104 for connecting external equipment 400 to be calibrated, control module 102
Connect, current signal input interface and voltage signal input interface are also used to connect with load blocks 104, load blocks 104 also with
Reference instrument 300 or external equipment 400 to be calibrated connect；
Control module 102 is also connect with display module 105, and display module 105 is for showing measurement result.
Specifically, it is powered using the supply voltage of 12V, power module 101 includes LM1117-5V power conversion chip
With LM1117-3.3V power conversion chip, the LM1117-5V power conversion chip is used to supply voltage being converted into 5V voltage
Signal, the LM1117-3.3V power conversion chip are used to supply voltage being converted into 3.3V voltage signal.LM1117-5V electricity
Source conversion chip and LM1117-3.3V power conversion chip periphery are provided with corresponding filter circuit, so that the voltage letter of output
It is number more steady.
As a preferred embodiment, power measurement module 103 is CSE7766 chip.
Further, with reference to Fig. 4, the power connector end VDD of CSE7766 chip be arranged in parallel the first filter capacitor C1 and
Second filter capacitor C2, power connector end VDD connection 5V voltage, the first filter capacitor C1 and the second filter capacitor C2 in parallel,
Can effectively eliminate high and low frequency noise, CSE7766 chip must detectable voltage signals and current signal simultaneously, can not be independent
A signal is only connect, the signal value detected is sent to control module 102.
CSE7766 chip further includes that V1P interface, VIN interface, V2P interface, RI interface, TI interface, CF interface and GND connect
Mouthful, wherein V1P interface and VIN interface are current signal input interface, and V2P is voltage signal input interface, and RI interface, TI connect
Mouth and CF interface are connect with control module 102, GND interfacing ground.
Further, load blocks 104 include the multichannel loading being equipped with and multiple relays, and control module 102 is also
The access of load is controlled for the on-off by control relay.
As a preferred embodiment, the relay is HK32F-G-005-HS.
As a preferred embodiment, display module 105 is UG-2864HSWEG01 display screen, which passes through
IIC interface is connect with control module 102.
As a preferred embodiment, control module 102 is STM32F103RCT6 main control chip.
Further, device provided in this embodiment further includes key module 106, is used for switching working mode.
Power measurement calibration device provided in this embodiment include three kinds of operating modes: measurement pattern, self-calibration mode and
External calibration mode can pass through key module switching working mode.
Measurement pattern:
With reference to Fig. 1, the current signal input interface of power measurement module 103 and voltage signal input interface are separately connected
Measurement equipment 200 to be checked, control module 102 disconnect load blocks 104, and power measurement module 103 detects the electricity of measurement equipment 200 to be checked
Pressure value, current value, and it is sent to control module 102, voltage value, current value and power are pushed to display by control module 102
Module 105 is shown.
Self-calibration mode:
With reference to Fig. 2, the current signal input interface of power measurement module 103 is connected into load with voltage signal input interface
Module 104, reference instrument 300 are connect with the reference instrument interface of control module 102, reference instrument 300 also with load blocks 104
Connection, control module 102 access reference instrument 300 and function by the on-off of the relay in control load blocks 104 with control
The payload size of rate measurement module 103 obtains the measured value and standard of power measurement module 103 under different loads respectively
The measured value of instrument 300 intends the measured value of power measurement module 103 using the measured value of reference instrument 300 as standard
It closes, obtains linear coefficient, realize the calibration of itself.Display module 105 is for showing calibration process.
External calibration mode:
The current signal input interface of power measurement module 103 is connected into load blocks 104 with voltage signal input interface,
External equipment 400 to be calibrated is connect with the external equipment calibration interface 1022 of control module 102, and external equipment 400 to be calibrated is also
It is connect with load blocks 104, control module 102 is accessed outer by the on-off of the relay in control load blocks 104 with control
The payload size of portion equipment 400 and power measurement module 103 to be calibrated obtains power measurement mould under different loads respectively
The measured value of the measured value of block 103 and external equipment 400 to be calibrated, to mark the measured value of power measurement module 103 multiplied by linear
Coefficient is standard, is fitted to the measured value of external equipment 400 to be calibrated, obtains the linear coefficient of calibration, realizes to outside
The calibration of equipment 400 to be calibrated.Display module 105 is for showing calibration process.
Power measurement calibration device provided in this embodiment, structure is simple, on the one hand can calibrate to itself, guarantees
The accuracy and precision of itself measurement, on the other hand can also calibrate external equipment, to the accuracy of external equipment into
Row is corrected, and guarantees its accuracy and precision, and the electric current, voltage and power that can additionally treat detection device are detected, inspection
The precision and accuracy of survey are high, which can satisfy the testing requirement of plurality of devices.
Embodiment two
A kind of power measurement calibration system provided in this embodiment, including the power measurement calibration dress as described in embodiment one
It sets, further includes measurement equipment to be checked perhaps reference instrument or external equipment to be calibrated.
When needing to treat detection device progress voltage and current measurement, measurement equipment access power to be checked is measured into calibration cartridge
It sets.
When needing to carry out self calibration, reference instrument is accessed into the power measurement calibration device.
When needing to calibrate external equipment to be calibrated, outside equipment access power to be calibrated is measured into calibration cartridge
It sets.
Concrete operating principle please refers to embodiment one, and details are not described herein.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (10)
1. a kind of power measurement calibration device, which is characterized in that including power module, control module, power measurement module, load
Module and display module；
The power module is connect with the control module, power measurement module, load blocks and display module；
The power measurement module includes current signal input interface, voltage signal input interface and communication interface, the electricity
Stream signal input interface and voltage signal input interface for connect with measurement equipment to be checked with detect the voltage of measurement equipment to be checked and
Electric current, the power measurement module are connect by the communication interface with the control module；
The control module includes reference instrument interface and external equipment calibration interface, and the reference instrument interface is for connecting mark
Quasi- instrument, the external apparatus interface also connect with the load blocks for connecting external equipment to be calibrated, the control module
It connects, the current signal input interface and voltage signal input interface are also used to connect with the load blocks, the load mould
Block is also connect with the reference instrument or external equipment to be calibrated；
The control module is also connect with the display module, and the display module is for showing measurement result.
2. power measurement calibration device according to claim 1, which is characterized in that the power module includes LM1117-
5V power conversion chip and LM1117-3.3V power conversion chip, the LM1117-5V power conversion chip is for the electricity that will power
Pressure is converted into 5V voltage signal, and the LM1117-3.3V power conversion chip is used to for supply voltage to be converted into 3.3V voltage letter
Number.
3. power measurement calibration device according to claim 1, which is characterized in that the power measurement module is
CSE7766 chip.
4. power measurement calibration device according to claim 3, which is characterized in that the power supply of the CSE7766 chip connects
It connects end and is provided with the first filter capacitor and the second filter capacitor.
5. power measurement calibration device according to claim 1, which is characterized in that the load blocks include multichannel loading
With multiple relays, the control module is also used to the on-off by controlling relay to control the access of load.
6. power measurement calibration device according to claim 5, which is characterized in that the relay is HK32F-G-005-
HS。
7. power measurement calibration device according to claim 1, which is characterized in that the display module is UG-
2864HSWEG01 display screen.
8. power measurement calibration device according to claim 1, which is characterized in that the control module is
STM32F103RCT6 main control chip.
9. power measurement calibration device according to claim 1, which is characterized in that described device further includes key module,
For switching working mode.
10. a kind of power measurement calibration system, which is characterized in that including the power measurement school as described in claim 1-9 is any
Standard apparatus further includes measurement equipment to be checked perhaps reference instrument or external equipment to be calibrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169296.8U CN209656871U (en) | 2019-01-30 | 2019-01-30 | A kind of power measurement calibration apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169296.8U CN209656871U (en) | 2019-01-30 | 2019-01-30 | A kind of power measurement calibration apparatus and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209656871U true CN209656871U (en) | 2019-11-19 |
Family
ID=68523650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920169296.8U Active CN209656871U (en) | 2019-01-30 | 2019-01-30 | A kind of power measurement calibration apparatus and system |
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| Country | Link |
|---|---|
| CN (1) | CN209656871U (en) |
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2019
- 2019-01-30 CN CN201920169296.8U patent/CN209656871U/en active Active
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