CN202975080U - A portable signal reference instrument - Google Patents
A portable signal reference instrument Download PDFInfo
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- CN202975080U CN202975080U CN 201220603120 CN201220603120U CN202975080U CN 202975080 U CN202975080 U CN 202975080U CN 201220603120 CN201220603120 CN 201220603120 CN 201220603120 U CN201220603120 U CN 201220603120U CN 202975080 U CN202975080 U CN 202975080U
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- microprocessor
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
Provided is a portable signal reference instrument which mainly comprises a microprocessor, an operation display interface, a power supply module, a reference voltage module, a voltage output module, a current output module, and a feedback measuring module. The microprocessor uses a high-speed 32-bit single chip microprocessor MEGA32L chip and is connected with the voltage output module. The voltage output module may convert digital signals provided by the microprocessor into analog signals which are amplified by an internal operation amplifier in the voltage output module and outputs voltage under the protection of a voltage limiting circuit at the exterior of the microprocessor. The microprocessor is also connected with the current output module which is formed by adding a voltage/current converting circuit on the basis of the voltage output module. The feedback measuring module capable of sampling the output voltage is connected with the microprocessor and may convert the sampled analog signals into digital signals in order to feedback the digital signals to the microprocessor and perform closed loop control of the output voltage. The portable signal reference instrument has characteristics of a simple structure, easy and reliable use, and satisfying provision of a signal source and measurement of input signals.
Description
Technical field
The utility model relates to the portable signal station meter that the devices such as a kind of electric system controls automatically, straight-flow system, electric meter, fault oscillograph are controlled and measured, belong to the signal source technical field of electric system.
Background technology
In the device courses of work such as electric system controls automatically, straight-flow system, electric meter, fault oscillograph, usually to use different control and the measuring-signals such as direct current 4-20mA, 0-75mV, 0-5V; The device periodic inspection, and the defect processing process in our instrument of needing to provide signal source can measure input signal again.
The utility model content
The purpose of this utility model is to overcome the deficiency that prior art exists, and provide a kind of application that can satisfy each side in electric system, raising personnel's work efficiency realizes the signal output of direct current 1-10V and 0-200mA and the portable signal station meter of measuring.
The purpose of this utility model is completed by following technical solution, it is mainly by microprocessor, the operation display interface, power module, the reference voltage module, the Voltage-output module, the electric current output module, the feedback measurement module forms, described microprocessor adopts 32 single-chip microcomputer MEGA32L chips at a high speed, is connected with a digital signal that microprocessor can be provided on this microprocessor and is converted into simulating signal, amplifies and the Voltage-output module of output voltage under the outside pressure limiting circuit of microprocessor is protected by inner amplifier; Described microprocessor also is connected with an electric current output module, and this electric current output module is to increase a voltage/current conversion circuit to consist of on the basis of Voltage-output module; One can be connected with described microprocessor to the feedback measurement module that output voltage is sampled, and it can be that digital signal feeds back to connected microprocessor and output voltage is carried out closed-loop control with the analog signal conversion that collects.
Described Voltage-output module comprises that one can be converted to digital signal 16 TVC5616 Voltage-output digital to analog converters of simulating signal and the operational amplifier that a simulating signal is amplified, and also is serially connected with a triode amplifier at voltage output end; The electric current output module comprises that one can be converted to output voltage the voltage/current conversion circuit of electric current; Described feedback measurement module is connected on the operational amplifier back output stage of Voltage-output module, and it comprises that mainly one can be converted into voltage analog the TVC5616 voltage digital to analog converter of 16 in digital quantity and the input microprocessor of sampling.
Export or measure the operation display interface of electric current and voltage value and control operation when also being furnished with mutually the energy display operation on described microprocessor.
The utlity model has simple in structure, easy to use, reliably, can satisfy can provide signal source, can the characteristics such as measure to input signal again.
Description of drawings
Fig. 1 is structural principle composition frame chart of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
below in conjunction with accompanying drawing, the utility model is described in detail: Fig. 1, shown in 2, the utility model is mainly by microprocessor CPU, operation display interface 1, power module 2, reference voltage module 3, Voltage-output module 4, electric current output module 5, feedback measurement module 6 forms, described microprocessor CPU adopts 32 single-chip microcomputer MEGA32L chips at a high speed, be connected with a digital signal that microprocessor can be provided on this microprocessor CPU and be converted into simulating signal, amplify and the Voltage-output module 4 of output voltage under the outside pressure limiting circuit protection of microprocessor by inner amplifier, described microprocessor CPU also is connected with an electric current output module 5, and this electric current output module 5 is to increase a voltage/current conversion circuit to consist of on the basis of Voltage-output module 4, one can be connected with described microprocessor CPU to the feedback measurement module 6 that output voltage is sampled, and it can be that digital signal feeds back to connected microprocessor CPU and output voltage is carried out closed-loop control with the analog signal conversion that collects.
Voltage-output module 4 described in the utility model comprises that one can be converted to digital signal 16 TVC5616 Voltage-output digital to analog converters of simulating signal and the operational amplifier that a simulating signal is amplified, and also is serially connected with a triode amplifier at voltage output end; Electric current output module 5 comprises that one can be converted to output voltage the voltage/current conversion circuit of electric current; Described feedback measurement module 6 is connected on the operational amplifier back output stage of Voltage-output module, it mainly comprise one voltage analog can be converted into digital quantity and the input microprocessor CPU that samples in the TVC5616 voltage digital to analog converter of 16.
Export or measure the operation display interface 1 of electric current and voltage value and control operation when also being furnished with mutually the energy display operation on described microprocessor CPU.
Embodiment:
Signal criterion instrument described in the utility model, it has mainly comprised microprocessor CPU, operation display interface 1, power module 2, reference voltage module 3, Voltage-output module 4, power supply output module 5, the parts such as feedback measurement module 6, instrument component voltage, current measurement, electric current and voltage output, 5 gears of accuracy calibration provide the selection of difference in functionality.
Power module adopts 7805 mu balanced circuits and 7660 negative pressure circuit to provide to other elements through the CPU module controls and enables power supply and Voltage-output.The reference voltage module is mainly CPU reference voltage is provided.The CPU module of station meter adopts 32 whole circuit of single-chip microcomputer MEGA32L chip controls at a high speed.The digital signal that the Voltage-output module mainly provides CPU is converted into simulating signal, amplifies and output voltage under the protection of the outside pressure limiting circuit of CPU by inner amplifier.The electric current output module is to increase a voltage/current conversion circuit to realize that voltage is to the output conversion of electric current on the basis of Voltage-output module.The feedback measurement module is sampled output voltage, be that digital signal feeds back to the CPU module thereby output voltage is carried out the function that closed-loop control realizes the constant pressure and flow output of whole circuit with the analog signal conversion that collects, when instrument was in the measurement gear, feedback metering circuit module can be converted into the external analog signal that receives digital data transmission and realize measuring the function of external voltage electric current to CPU simultaneously.An electric current and voltage value of exporting or measuring and the realization of control operation station meter function when the operation display interface is used for display operation.
Claims (3)
1. portable signal station meter, it is mainly by microprocessor, the operation display interface, power module, the reference voltage module, the Voltage-output module, the electric current output module, the feedback measurement module forms, it is characterized in that described microprocessor adopts 32 single-chip microcomputer MEGA32L chips at a high speed, be connected with a digital signal that microprocessor can be provided on this microprocessor and be converted into simulating signal, amplify and the Voltage-output module of output voltage under the outside pressure limiting circuit of microprocessor is protected by inner amplifier; Described microprocessor also is connected with an electric current output module, and this electric current output module is to increase a voltage/current conversion circuit to consist of on the basis of Voltage-output module; One can be connected with described microprocessor to the feedback measurement module that output voltage is sampled, and it can be that digital signal feeds back to connected microprocessor and output voltage is carried out closed-loop control with the analog signal conversion that collects.
2. portable signal station meter according to claim 1, it is characterized in that described Voltage-output module comprises that one can be converted to digital signal 16 TVC5616 Voltage-output digital to analog converters of simulating signal and the operational amplifier that a simulating signal is amplified, and also is serially connected with a triode amplifier at voltage output end; The electric current output module comprises that one can be converted to output voltage the voltage/current conversion circuit of electric current; Described feedback measurement module is connected on the operational amplifier back output stage of Voltage-output module, and it comprises that mainly one can be converted into voltage analog the TVC5616 voltage digital to analog converter of 16 in digital quantity and the input microprocessor of sampling.
3. portable signal station meter according to claim 1 and 2 is characterized in that also being furnished with mutually on described microprocessor the operation display interface of exporting or measure electric current and voltage value and control operation can display operation the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603120 CN202975080U (en) | 2012-11-15 | 2012-11-15 | A portable signal reference instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603120 CN202975080U (en) | 2012-11-15 | 2012-11-15 | A portable signal reference instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975080U true CN202975080U (en) | 2013-06-05 |
Family
ID=48516138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603120 Expired - Fee Related CN202975080U (en) | 2012-11-15 | 2012-11-15 | A portable signal reference instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975080U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425183A (en) * | 2015-11-13 | 2016-03-23 | 安徽朗格暖通设备有限公司 | Electronic instrument calibration circuit and calibration device |
| CN107144711A (en) * | 2017-06-07 | 2017-09-08 | 中广核研究院有限公司 | A kind of signal generator and handheld digital pulse and electric current tester |
| CN107219385A (en) * | 2017-04-20 | 2017-09-29 | 深圳市杰普特光电股份有限公司 | Signal generation apparatus |
-
2012
- 2012-11-15 CN CN 201220603120 patent/CN202975080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425183A (en) * | 2015-11-13 | 2016-03-23 | 安徽朗格暖通设备有限公司 | Electronic instrument calibration circuit and calibration device |
| CN107219385A (en) * | 2017-04-20 | 2017-09-29 | 深圳市杰普特光电股份有限公司 | Signal generation apparatus |
| CN107144711A (en) * | 2017-06-07 | 2017-09-08 | 中广核研究院有限公司 | A kind of signal generator and handheld digital pulse and electric current tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20201115 |