CN206740245U - A kind of passive type radiation collector verification system - Google Patents
A kind of passive type radiation collector verification system Download PDFInfo
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- CN206740245U CN206740245U CN201720103838.2U CN201720103838U CN206740245U CN 206740245 U CN206740245 U CN 206740245U CN 201720103838 U CN201720103838 U CN 201720103838U CN 206740245 U CN206740245 U CN 206740245U
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- radiation
- microprocessor
- radiation collector
- passive type
- thermoelectric pile
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Abstract
A kind of passive type radiation collector verification system is the utility model is related to, the system includes microprocessor, thermoelectric pile, radiation collector, radiosusceptibility storage module, display system, inputs keyboard；Input keyboard is connected with microprocessor, microprocessor is by feedback of the information to display system, thermoelectric pile is connected with microprocessor, and radiosusceptibility storage module and microprocessor carry out data exchange, temperature signal is converted into radiation signal by electric heating heap sent to radiation collector to be examined and determine；It is presetting to the progress radiation value increase and decrease of radiosusceptibility storage module by inputting keyboard.Passive type radiation collector calibrating system provided by the utility model, utilize high precision closed loop temperature control thermoelectric pile, it is aided with high-acruracy survey output signal and carries out feedback control, designs a kind of passive, program control faint radiation signal generation system, standard source is provided for the calibrating of radiation collector.
Description
Technical field
A kind of passive type radiation collector verification system is the utility model is related to, belongs to radiation collection and identification module neck
Domain.
Background technology
Automatic weather station is electronic equipment, is mainly made up of meteorological element sensor and data acquisition unit two parts, its electricity
The attribute of sub- equipment determines the measurement error objective reality of sensor and data acquisition unit, particularly long-term ring severe in the wild
In border after use, its accuracy of observation declines, and error significantly increases, this may make Data of Automatic Weather collector error and
The error estimate formula result of sensor exceedes the global error of automatic weather station.The existing vertification regulation of automatic weather station sensor, is saved
Level meteorological phenomena measurement department has carried out the calibrating vocational work of sensor.And as the data acquisition unit of automatic weather station core
Calibration it is at the early-stage, calibration equipment extremely lacks.
To improve the quality of data of Radiation Observation, the measurement verification of each province City Weather Bureau is periodically examined to radiation sensor
It is fixed.The calibrating of sensor can measure the progress of its output voltage values by using high-precision universal meter.And the calibrating of radiation collector
Instrument more lacks.
Weather bureau mainly uses meteorologic signal simulator, program-controlled generation radiation signal, by the measured value of collector at present
Setting value with instrument is compared, and to judge the measurement performance of collector passage, solves acquisition device in weather station calibrating
The problem of instrument deficiency.Calibrating instrument produce radiation signal realization approach be mainly：Microcontroller is according to sensitivity, radiation
Amount, the relation of voltage three, calculating will caused electric signal.Then, faint electric parameter is produced using high-precision DAC to simulate
Radiation signal.By comparing the measured value and setting value of collector, the measurement error of collector is calculated, examines and determine its measurement performance.
For improve simulation radiation signal precision, by using the DAC of very high degree of precision, Bus isolation, isolated from power, be aided with multilayer print
The measure such as circuit board and circuits mask ensures the precision of output small-signal.
The scheme of existing instrument is using caused by active electronic device.And radiation signal originally penetrate it is very faint --- millivolt
Or microvolt level, the thermal noises of these active devices, power supply noise etc. be easily superimposed upon caused by radiation signal；Existing instrument from
It is output to control and does not form closed-loop system, when exporting faint radiation signal, output valve is not monitored in real time.One
Be present deviation in denier output valve, then can not be modified in time, and existing scheme does not meet radiation sensor working mechanism.Radiation sensing
The principle of device is to be acted on using thermoelectric pile by temperature difference, produces extremely faint electric signal, according to the size of output electric signal
With Calculation of Sensitivity radiation intensity.Essentially, this is a kind of passive system.
Utility model content
For the problem present on, produced the utility model proposes a kind of radiation of passive type and radiation collector is examined and determine
System, it is designed using passive type programme control circut according to the radiation sensor principle of automatic weather station, is aided with closed loop feedback system
Design, high degree reduce influence of the instrument to output signal in itself.
The utility model adopts the following technical scheme that：
Passive type radiation collector verification system described in the utility model, including microprocessor, thermoelectric pile, radiation collection
Device, radiosusceptibility storage module, display system, input keyboard；Input keyboard is connected with microprocessor, and microprocessor is by information
Display system is fed back to, thermoelectric pile is connected with microprocessor, and radiosusceptibility storage module carries out data exchange with microprocessor,
Temperature signal be converted into radiation signal by electric heating heap sent to radiation collector to be examined and determine；By inputting keyboard to radiation
It is presetting that sensitivity storage module carries out radiation value increase and decrease.
Passive type radiation collector verification system described in the utility model, the spoke that described radiation collector will collect
Penetrate the radiation value that value is obtained with thermoelectric pile by feedback algorithm to be contrasted, judge whether the collection value of radiation collector is correct.
Passive type radiation collector verification system described in the utility model, described thermoelectric pile pass through high-precision A/D moulds
Block carries out feedback algorithm, then carries out processing by microprocessor and send to display system.
Passive type radiation collector verification system described in the utility model, temperature signal that thermoelectric pile is sent and sends
Electric signal uses dual closed-loop control.
Passive type radiation collector verification system described in the utility model, in addition to Bus isolation module, Bus isolation
Module is used to shield the electromagnetic interference to module.
Beneficial effect
Passive type radiation collector calibrating system provided by the utility model, using high precision closed loop temperature control thermoelectric pile, is aided with
High-acruracy survey output signal simultaneously carries out feedback control, designs a kind of passive, program control faint radiation signal generation system, is
The calibrating of radiation collector provides standard source.
Mechanism of the present apparatus from radiation sensor in itself, develop passive radiation signal and produce and collector calibrating system
System, overcomes existing instrument and the problem of noise is big be present using active circuit；It is proposed using temperature and export the dual of electric signal
Parameter closed-loop control, ensure the high accuracy of system output signal.Avoiding existing instrument from being input to output can not in the absence of feedback
In time the problem of amendment.Reliable solution is provided for the calibrating of the radiation collector of automatic weather station.
Brief description of the drawings
Fig. 1 is module connection diagram of the present utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：
As shown in the figure：Passive type radiation collector verification system, including microprocessor, thermoelectric pile, radiation collector, radiation
Sensitivity storage module, display system, input keyboard；Input keyboard be connected with microprocessor, microprocessor by feedback of the information extremely
Display system, thermoelectric pile are connected with microprocessor, and radiosusceptibility storage module carries out data exchange with microprocessor, passes through electricity
Temperature signal is converted into radiation signal and sent to radiation collector to be examined and determine by thermal reactor；By inputting keyboard to radiosusceptibility
It is presetting that storage module carries out radiation value increase and decrease.
System controls the temperature of thermopile sensor by microprocessor, is changed temperature signal by thermopile sensor
For the radiation signal of high-accuracy voltage form, then radiation signal is transmitted to the radiation collector for needing to examine and determine and examined and determine.
Amount of radiation directly can be set for Keysheet module or stepping increase and decrease radiation value, while display system can directly display
The radiation value of setting.To output 500, then according to radiation sensor mechanism, the magnitude of voltage of system output is about 5mV, spoke
The radiation value that collector is received shown by the radiation value and calibrating instrument shown after radiation signal is penetrated to contrast, and if 500, then radiation value further being increased or decreased by stepping, whether both radiation values of display of contrast are consistent while increase and decrease,
If all consistent, illustrate that radiation collector is working properly.
For system accuracy, first by thermopile sensor module, reducing temperature using temperature feedback algorithm and causing
Voltage error so that voltage error is less than 10uV, meanwhile, in radiation signal output end modelled signal modulate circuit, pass through height
Precision A/D modular converters carry out voltage signal feedback, realize from the feedback adjustment for being output to input.Temperature and electric signal it is dual
Closed-loop control, system accuracy can be caused to reach requirement.Bus isolation module and multilayer board in Fig. 1 etc. be for
Electromagnetic shielding is realized, reduces the electromagnetic interference between electronic system, reduces system noise.
The function of each module is illustrated for passive type radiation collector verification system provided by the utility model：
Microprocessor and man-machine interaction:It is responsible for coordination control, temperature control algorithm, the radiation of each functional module of whole system
Real-time measurement of calculating, output signal between signal, sensitivity, output electric signal three etc..Used for convenience of field condition,
Realized using the microprocessor of low-power consumption, such as the MSP430 systematic microprocessors of TI companies.Display uses 3.2 inches of colour
TFT screens.Keyboard uses matrix keyboard, can customize and sets output size, stepping increase and decrease etc..
The temperature control of thermoelectric pile:Reference radiation Fundamentals of Sensors, according to temperature and the quantity of thermoelectric pile both end voltage difference
Relation, calculate the setting value and error of temperature.Using PT1000 type temperature sensors of high precision, the real-time temperature of thermoelectric pile is measured
Degree, and according to setting value, feedback adjustment is carried out using improved pid algorithm until stable.
Further to improve the precision of output radiation signal, the real-time observation circuit of output signal is designed.Due to the electricity of output
Signal is very faint, forms signal conditioning circuit using the amplifier of Low Drift Temperature, low imbalance, feeding 24 is high-precision after amplification
ADC such as AD7793 are sampled.ADC measured value is sent into microprocessor and carries out conversion processing.To reduce digital display circuit to mould
Intend the interference of measurement part, Bus isolation is carried out using data isolation device between ADC and microprocessor.The electricity of measuring system simultaneously
Source is isolated, individually power supply.
Radiosusceptibility stores:Meteorological measurement criterion personnel input for amount of radiation, to be converted into electric signal.Need to pass through
Sensitivity is calculated.And sensitivity can be taking human as setting, therefore design the numerical value of storage circuit storage sensitivity.Using
The memory of spi bus is realized.
To provide the output signal of very high degree of precision, in addition to using Bus isolation and isolated from power, the electricity of electronic measurement system
Road plate uses multi-layer PCB form, and shielding box reasonable in design, is electromagnetically shielded to system around circuit board.
PMU is responsible for signal simulator and provides working power.PMU includes：220V alternating currents
Insulating power supply system, the standby power management system that source transformation system, battery charging and discharging system, each unit circuit need.Normally
In use, the battery using nominal voltage 12V（Generally use lithium battery）.220V alternating currents are used during charging.
Using Detection of Weak Signals and treatment technology, high-precision A/D and D/A conversion chips are selected, ensure varying environment
At a temperature of signal imitation and sensor detection module measurement accuracy.
Claims (6)
- A kind of 1. passive type radiation collector verification system, it is characterised in that：Including microprocessor, thermoelectric pile, radiation collector, Radiosusceptibility storage module, display system, input keyboard；Input keyboard is connected with microprocessor, and microprocessor is anti-by information Display system is fed to, thermoelectric pile is connected with microprocessor, and radiosusceptibility storage module carries out data exchange with microprocessor, leads to Electric heating heap is crossed temperature signal is converted into radiation signal to send to radiation collector to be examined and determine；By inputting keyboard to radiation spirit It is presetting that sensitivity storage module carries out radiation value increase and decrease.
- 2. passive type radiation collector verification system according to claim 1, it is characterised in that：Described radiation collector The radiation value that the radiation value collected is obtained with thermoelectric pile by feedback algorithm is contrasted, judges the collection of radiation collector Whether value is correct.
- 3. passive type radiation collector verification system according to claim 1, it is characterised in that：Described thermoelectric pile passes through High-precision A/D-module carries out feedback algorithm, then carries out processing by microprocessor and send to display system.
- 4. passive type radiation collector verification system according to claim 1, it is characterised in that：The temperature that thermoelectric pile is sent Signal and the electric signal sent use dual closed-loop control.
- 5. passive type radiation collector verification system according to claim 1, it is characterised in that：Also include Bus isolation mould Block, Bus isolation module are used to shield the electromagnetic interference to module.
- 6. passive type radiation collector verification system according to claim 1, it is characterised in that：Also include multilayered printed Plate, its thermoelectric pile module outside are provided with multilayer board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103838.2U CN206740245U (en) | 2017-01-24 | 2017-01-24 | A kind of passive type radiation collector verification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103838.2U CN206740245U (en) | 2017-01-24 | 2017-01-24 | A kind of passive type radiation collector verification system |
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| Publication Number | Publication Date |
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| CN206740245U true CN206740245U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720103838.2U Expired - Fee Related CN206740245U (en) | 2017-01-24 | 2017-01-24 | A kind of passive type radiation collector verification system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919336A (en) * | 2018-08-24 | 2018-11-30 | 无锡华普微电子有限公司 | A kind of radiation detector performance test frock system |
| CN109900367A (en) * | 2019-04-10 | 2019-06-18 | 重庆中科芯亿达电子有限公司 | A kind of anti-jamming signal processing chip |
-
2017
- 2017-01-24 CN CN201720103838.2U patent/CN206740245U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919336A (en) * | 2018-08-24 | 2018-11-30 | 无锡华普微电子有限公司 | A kind of radiation detector performance test frock system |
| CN109900367A (en) * | 2019-04-10 | 2019-06-18 | 重庆中科芯亿达电子有限公司 | A kind of anti-jamming signal processing chip |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| 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: 20171212 Termination date: 20200124 |