CN108089239A - A kind of d.c.voltage calibrator and client - Google Patents
A kind of d.c.voltage calibrator and client Download PDFInfo
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- CN108089239A CN108089239A CN201711377919.2A CN201711377919A CN108089239A CN 108089239 A CN108089239 A CN 108089239A CN 201711377919 A CN201711377919 A CN 201711377919A CN 108089239 A CN108089239 A CN 108089239A
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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Abstract
The invention discloses a kind of d.c.voltage calibrator and client, including：Benchmark source module, for exporting stable reference voltage；Program-controlled voltage output module is connected with the reference voltage output end of the benchmark source module, is used to implement the quantitative output of DC voltage；Central processing module is connected with the program-controlled voltage output module, for controlling the output of the program-controlled voltage output module；The central processing module is also connected with controlling with display module.The central processing module is also associated with Network Interface Module, the operational order in the voltage calibration process that remote terminal sent by network can be obtained using central processing module described in the Network Interface Module and the output information in the voltage calibration process of central processing module is sent to remote terminal by network.D.c.voltage calibrator provided in an embodiment of the present invention can meet the seismographic station application for being located at that more remote fracture belt is regional and day and night temperature is very big well.
Description
Technical field
The present invention relates to computer and electronic technology field more particularly to a kind of d.c.voltage calibrator and clients.
Background technology
The object of seismological observation is a long-term change procedure, in order to ensure seismic observation data accurately and reliably and amount
Value is traced to the source, and seismic industry proposes specific requirement for the calibration of earthquake observation instruments, and multiple seismic industry standards are to correlation
The calibration of classification earthquake observation instruments is proposed regulation.Calibration refers to tested to test using the higher reference instrument of accuracy
The error of indication of instrument.Instrument is calibrated, just must have the standard device for possessing certain output accuracy, seismograph station
10uV magnitudes are generally reached to the output accuracy requirement of standard device.
Number of types of earthquake observation instruments be by sensor by zenith observation angle (such as air pressure, temperature, resistivity,
Frequency etc.) be converted to DC voltage form carry out numerical value output.The many earthquake precursor observation stations in China use direct current at present
Potential difference meter (UJ25 or UJ34) and saturated standard cell (BC3) provide adjustable standard respectively as voltage standard measuring equipment
Voltage and fixed standard voltage calibrate relative earthquake Precursor observation instrument (such as ZD8M earth resistivities instrument).Accordingly
Ground electricity observation instrument calibration method is as shown in Figure 1.
Since the operating condition of DC potentiometer easily changes, (such as subsidiary loop power supply is unstable, variable resistor
Change), so before each test, it is required for first passing through saturated standard cell and is zeroed to its voltage output value
Correction, then could be used for the calibration to earthquake observation instruments.
Saturated standard cell by operating ambient temperature variation etc. extraneous factors be affected, saturated standard cell it is electronic
Gesture is more sensitive for temperature, and temperature coefficient is about 40uV/ DEG C, and output of most of earthquake observation instruments to standard device
Required precision reaches 10uV.Therefore station personnel are before saturated standard cell is used, it is necessary to accurate to read showing for thermometer
Value, and stringent temperature adjustmemt carries out it by interpolation method of tabling look-up, it otherwise will influence saturated standard cell electromotive force
Accurate output.
By foregoing description as can be seen that existing voltage standard measuring equipment is in operation of the correction course to station personnel
It there are certain requirements, be readily incorporated manual measurement error, influence the accuracy of the electric Instrument observation in ground.Simultaneously as seismological observation platform
It stands and is generally in more remote Earthquake Fault Zone monitoring area, there are many unattended station.Staff needs periodically to carry
The unattended station, instrument calibration as defined in the progress of scene are rushed towards in corresponding calibrator (-ter) unit (i.e. voltage standard measuring equipment) driving
Operation, it is time-consuming and laborious, it is completely inconvenient.
The content of the invention
The object of the present invention is to provide a kind of d.c.voltage calibrator and client, so as to greatly facilitate work people
Member completes corresponding voltage calibration operation.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of d.c.voltage calibrator including thermostat, is provided with benchmark source module, program-controlled voltage in the thermostat
Output module and central processing module, wherein：
Benchmark source module, for exporting stable reference voltage；
Program-controlled voltage output module is connected with the reference voltage output end of the benchmark source module, is used to implement direct current
The quantitative output of pressure；
Central processing module is connected with the program-controlled voltage output module, for controlling the program-controlled voltage output module
Output；
The central processing module is also connected with controlling with display module, which is used for what will be received with display module
Operational order in voltage calibration process sends the central processing module and the voltage calibration mistake by central processing module to
Output information display output in journey.
The central processing module is also associated with Network Interface Module, utilizes central processing mould described in the Network Interface Module
Block can obtain operational order in the voltage calibration process that remote terminal is sent by network and by central processing module
Voltage calibration process in output information remote terminal is sent to by network.
The benchmark source module is realized using LZT1000 chips；The central processing module is real using microcontroller plate
It is existing, W5100 network protocol converters built in the microcontroller plate；The program-controlled voltage output module is real using AD5791 chips
Existing, benchmark input is detected using external amplifier and is connected using unity gain configuration mode with output amplifier
It connects, and using support device of the AD8675 two-path amplifiers as AD5791.
The control includes with display module：LED display and 4 × 4 matrix keyboards.
A kind of DC voltage calibrates client, which is used to by network be led to above-mentioned d.c.voltage calibrator
Letter, and the client includes：
Network connecting module connects for being established with network, and passes through network and establish connection with the central processing module；
Display processing module, in the voltage calibration process sent for showing the central processing module by network
Output information；
Control process module is operated, for passing through behaviour of the network into central processing module transmission voltage calibration process
It instructs.
The DC voltage calibration client further includes network connection sensing module, for the network connecting module
Network connection state tested.
The DC voltage calibration client further includes task management module, for meeting pre-set voltage school
Voltage calibration is appointed according to pre-set output voltage values and continuous output time automated execution during quasi- task execution condition
Business, alternatively, according to the output voltage values of setting, continuous output time and the pre-set multiple voltages of interval time automated execution
Calibration tasks.
The voltage calibration task execution condition includes：Specified time or specified time interval；It is and described predetermined when meeting
The voltage calibration task of automated execution is one or more during condition.
The Display processing module includes：
Voltage output control interface module, for showing electricity of the program-controlled voltage output module in voltage calibration process
Press output valve；
Network parameter sets interface module, and for setting local network parameter, the network parameter includes IP address, subnet
Mask and gateway information.
The DC voltage calibration client further includes：
Thresholding controls management module, determines never to receive voltage school within threshold value period predetermined time for working as
During operational order during standard, then the voltage output for stopping the program-controlled voltage output module is controlled；
The voltage output control interface module is additionally operable to show the time gate limit value.
As seen from the above technical solution provided by the invention, a kind of DC voltage calibration provided in an embodiment of the present invention
Device and client, not only have higher output accuracy, while also have high stability, compared with wide operating temperature range, convenient for behaviour
It uses and the advantages of price is relatively low.Wherein, scene need not be rushed towards by corresponding client user to be operated,
It disclosure satisfy that the field of the specific demands such as unattended seismograph station.Therefore, DC voltage provided in an embodiment of the present invention
Calibrator can meet the seismograph station application for being located at that more remote fracture belt is regional and day and night temperature is very big well.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is calibration method schematic diagram of the prior art；
Fig. 2 is the structure diagram of calibrator provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of client provided in an embodiment of the present invention；
Fig. 4 is the operating mode schematic diagram of calibrator provided in an embodiment of the present invention；
Fig. 5 is the application schematic diagram of central processing module provided in an embodiment of the present invention；
Fig. 6 A are the circuit diagram of the program-controlled voltage output module in the embodiment of the present invention；
Fig. 6 B are the circuit diagram of the benchmark source module in the embodiment of the present invention；
Fig. 7 is the display interface schematic diagram that the control in the embodiment of the present invention is provided with display module；
Fig. 8 is the keyboard structure schematic diagram of the control and display module in the embodiment of the present invention；
Fig. 9 is the initial interface schematic diagram of the client in the embodiment of the present invention；
Figure 10 is the remote control voltage output interface schematic diagram of the client in the embodiment of the present invention；
Figure 11 is the setting interface schematic diagram of the client in the embodiment of the present invention；
Figure 12 is the preservation configuration information interface schematic diagram of the client in the embodiment of the present invention；
Figure 13 is the output interface schematic diagram of control at regular time and quantity of the client in the embodiment of the present invention.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to protection scope of the present invention.
In the present invention, it is contemplated that many seismograph stations are all located at more remote fracture belt area, and day and night temperature is very big.
Therefore requirement of the seismograph station to standard device is except having compared with height output precision, it is also necessary to have high stability, wider work temperature
The characteristics of spending scope and use easy to operation.For this purpose, an embodiment of the present invention provides a kind of DC voltages haing the following advantages
Calibrator：
There is height output precision, high stability, relatively low compared with wide operating temperature range and price；
For the specific demand of the unattended station, network-based long-range output control model is developed, facilitates platform
It stands the use of personnel；
For the repetitive operation for needing to be worth input one by one and the inconvenience that specific time is waited to be operated, stream is developed
Journeyization control output and the function of the programme-control output of " timing quantifies ".
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
An embodiment of the present invention provides a kind of d.c.voltage calibrators, and specific implementation structure is as shown in Fig. 2, can include
Thermostat can provide stationary temperature environment in the thermostat；It is (i.e. high steady that benchmark source module is provided in the thermostat
Surely spend benchmark source module), program-controlled voltage output module and central processing module, wherein：
Benchmark source module, for exporting stable reference voltage, for example, exporting constant 5V DC voltages as shown in Figure 2
A reference source as program-controlled voltage output module；
Program-controlled voltage output module is connected with the reference voltage output end of the benchmark source module, is used to implement direct current
The quantitative output of pressure, normal voltage of the output voltage as the electric observation instrument in ground；
Central processing module is connected with the program-controlled voltage output module, for controlling the program-controlled voltage output module
Output, specifically can by program-controlled voltage output module send operational order, to control the program-controlled voltage output module
The course of work, include whether outputting standard voltage value in work and the course of work etc.；
The central processing module is also connected with controlling with display module, which is used for what will be received with display module
Operational order in voltage calibration process sends the central processing module and the voltage calibration mistake by central processing module to
Output information display output in journey.
Specifically, with reference to shown in Fig. 2, corresponding d.c.voltage calibrator is mainly by high stability benchmark source module, program-controlled
The part such as voltage follower circuit module, central processing module, power supply module, control and display module forms.In order to realize
Adjustable normal voltage output in high precision, can specifically be exported stable DC+5V normal voltages by high stability benchmark source module,
Under the control of central processing module, by the direct voltage output of program-controlled voltage output circuit module realization -10.0V~+10.0V；
In order to realize reduce temperature drift influence high stable output, by high stability benchmark source module, program-controlled voltage output circuit module, in
It entreats in the internally placed thermostat for keeping constant temperature of processing module；Power supply module in Fig. 2 is used to provide each module
Required DC+5V, DC ± 15V supply voltages.
In fig. 2, the technical indicator of corresponding d.c.voltage calibrator can be：
Input voltage range：AC 220V ± 10%；
Output voltage range：DC 0~± 10V；
Output voltage step-length：No more than 5uV；
Export the limits of error：± (0.003% output+5uV) (under the conditions of 20 ± 5 DEG C), ± (0.005% output+
5uV) (under the conditions of 0~+40 DEG C)；
Operating temperature range：0~+40 DEG C.
Further, for ease of the course of work of program-controlled voltage output module described in remote control, the central processing mould
Block can also be connected with Network Interface Module, and remote terminal can be obtained using central processing module described in the Network Interface Module
Operational order in the voltage calibration process sent by network and will be in the voltage calibration process of central processing module
Output information is sent to remote terminal by network.
Specifically, during d.c.voltage calibrator specific implementation, the benchmark source module uses LZT1000 cores
Piece is realized；The central processing module realizes that W5100 procotols built in the microcontroller plate are converted using microcontroller plate
Device；The program-controlled voltage output module using AD5791 chips realize, benchmark input be detected using external amplifier and
It is attached using unity gain configuration mode with output amplifier, also using AD8675 two-path amplifiers as AD5791's
Support device.
In above-mentioned d.c.voltage calibrator, the control can include with display module：LED display and 4 × 4 matrixes
Keyboard, for controlling the size of output valve and interface display.
In above-mentioned d.c.voltage calibrator, if including corresponding Network Interface Module, the embodiment of the present invention also provides
A kind of DC voltage calibration client, is used to communicating by network with d.c.voltage calibrator, to realize long-range control
The central processing module is made, and then realizes remote operation voltage calibration process, that is to say, that by the client, based on net
Network can realize the remote control of " timing output, the quantitative output " in voltage calibration process；Specifically, the client such as Fig. 3
It is shown, it can include：
Network connecting module connects for being established with network, and passes through network and establish connection with the central processing module,
In order to send operational order to the central processing module by network；
Display processing module, in the voltage calibration process sent for showing the central processing module by network
Output information checks relevant information convenient for client user；
Operate control process module, for establish the client and network in the network connecting module connection after,
Pass through operational order of the network into central processing module transmission voltage calibration process.
To ensure the reliability of network connection, which can also include network connection sensing module, for described
The network connection state of network connecting module is tested, and specifically periodically network connection state can be tested, if network
Connection status is normal, then continue it is pending test next time, if network connection state is abnormal, it tries re-establish network connection
Or notify that client user's connection status is abnormal, in order to which user can note abnormalities in time and be handled accordingly, and then
Ensure the information such as the operational order in voltage calibration process by reliably passing through transmission of network.
In the DC voltage calibrates client, task management mould can also be included for ease of performing voltage calibration task
Block, for when meeting pre-set voltage calibration task execution condition according to pre-set output voltage values and continue it is defeated
Go out voltage calibration task described in time automated execution, alternatively, according to the output voltage values of setting, continuous output time and interval when
Between the pre-set multiple voltage calibration tasks of automated execution.Wherein, the voltage calibration task execution condition can with but it is unlimited
In including：Specified time or specified time interval；And the voltage calibration of the automated execution when a predetermined condition is satisfied is appointed
It is engaged in as one or more.
Client is calibrated in above-mentioned DC voltage, the Display processing module can specifically include：
Voltage output control interface module, for showing electricity of the program-controlled voltage output module in voltage calibration process
Output valve is pressed, specifically can accordingly be shown by voltage output control interface；
Network parameter sets interface module, and for setting local network parameter, the network parameter includes IP address, subnet
Mask and gateway information, the setting that specifically interface can be set by network parameter can carry out local network parameter operate；
Further, DC voltage calibration client can also include thresholding control management module, be determined for working as
When never receiving the operational order in voltage calibration process in threshold value period predetermined time, then control and stop the journey
Control the voltage output of voltage output module；Correspondingly, the voltage output control interface module is additionally operable to show the time gate
Limit value can specifically show time value of the time gate limit value and its current residual etc..
For the embodiment of the present invention during concrete application, corresponding operating mode structure can be with as shown in figure 4, specifically can be with
Including two kinds of operational control voltages output modes：
One kind is local user by the way that host progress button operation, i.e. local user passes through the control and display in Fig. 2
The LED display and keyboard that module includes are operated, and control output voltage values；
Another kind is that remote user sends control instruction (i.e. operational order) by client remote, is transmitted through the network to
Host CPU control unit (i.e. central processing module), and then output voltage values are controlled, so as to using the side of remote control
Method is realized carries out calibration operation to unattended station devices.
Therefore, the embodiment of the present invention has taken into account two kinds of operation control modes of local control and remote control, on using more
Add convenience, practicality.
For ease of the understanding of the present invention, below in conjunction with attached drawing to the concrete application realization method of the embodiment of the present invention into
Row is described in detail.
Referring now still to specifically included shown in Fig. 2, in the embodiment of the present invention high stability benchmark source module, program-controlled voltage output electricity
Road module, central processing module, thermostat (not shown), control and display module, power supply module, client control
The parts such as software；The specific implementation of various pieces will be illustrated respectively below：
(1) high stability benchmark source module
During specific implementation, with reference to shown in Fig. 6 B, the main devices of the high stability benchmark source module in above-mentioned Fig. 2
The realization of LZT1000 chips may be employed.The chip be internally integrated a near surface Zener benchmark, one be used to implement temperature
The heating resistor of stability and a temperature detection transistor, heater is controlled by the measured value of collecting temperature sensor
Heated current so that for temperature drift coefficient up to 0.05 × 10-6/ DEG C, output noise is about 1.2uVpp.The Zener of chip internal
Buried technology is employed, voltage-regulation coefficient is up to 1 × 10-6/.In addition, in order to reduce the noise of peripheral cell, and improve perseverance
Flow control and temperature-compensating precision, use voltage-stabiliser tube constant current drive mode to realize low noise；And select Low Drift Temperature, low noise
The components such as sampling resistor and difference amplifier.
(2) central processing module
Central processing module is the processing and control element (PCE) of whole equipment, is responsible for analysis instruction signal, controls DAC (digital moulds
Intend converter) program the work such as output.With reference to shown in Fig. 5, it is micro- that Ethernet may be employed in central processing unit during realization
Controller board, built-in W5100 network protocol converters, can rapidly realize controller accessing internet.Microprocessor is (i.e.
Microcontroller in Fig. 5) as central processing module core devices, it is responsible for the work such as display, the control of whole equipment；Procotol
Converter is responsible for the communication transfer of Terminal Server Client and local equipment as communication intermediary device, realize external network communication with
The conversion of internal serial communication.
(3) program-controlled voltage output module
Program-controlled voltage output module (or program control type output circuit module) mainly realizes the quantitative output of DC voltage.For
Realize the output resolution ratio of 5uV and the output range of ± 10V, voltage output module needs the digital-to-analogue of a piece of 20 or more precision
Converter.As shown in fig. 6, can select AD5791 chips during specific implementation, as digital analog converter, the chip is one
Money high-precision, single channel, 20, Serial output, without buffer voltagc output digital analog converter, using the bipolarity of highest 33V
Power supply is powered, and possesses the benchmark positive voltage of 7.5V~16.5V and the negative reference voltage of -16.5V~-2.5V, temperature drift coefficient is
0.05uV/ DEG C, resolution ratio is up to 1uV.In order to ensure AD5791 can give play to rated performance and keep stable, benchmark input is also
It needs to be detected using external amplifier.In order to avoid there is the phenomenon that bias current imbalance, using unity gain configuration
Mode is attached with output amplifier.Since positive/negative benchmark driving/detection input of AD5791 is required for placing unit increasing
Beneficial amplifier, considers the factors such as noise, temperature drift and response speed, and selection is made using AD8675 two-path amplifiers
For support devices of the AD5791 in high precision electro potential source.
(4) thermostat
Constant temperature slot device is using the finished product thermostat of purchase, and it is 45 DEG C to set internal temperature constant, by high stability benchmark
Source module, central processing module, program control type output circuit module are placed wherein, to reduce above-mentioned module Sensitive Apparatus by external temperature
Spend the influence of variation.
(5) control and display module
Control is mainly made of with display module LED display, 4 × 4 matrix keyboards and network interface, is exported for controlling
Value and interface display.Wherein, network interface is connected with central processing module, is used to implement central processing module and is controlled with client
Network communication between software.
As shown in fig. 7, LED display sets interface by voltage output control interface (VOLTAGE) and network parameter
(NETWORK) two parts form, and wherein voltage output control interface is mainly used for showing and controls the machine control DC voltage defeated
Go out；Network settings interface is mainly used for setting the network parameter of the machine, including IP address, subnet mask, gateway.In this outer boundary
It can still arrive without other control instructions if reaching the time threshold, just stop with output time thresholding configuration information
Current voltage exports, to ensure output safety.
The structure of corresponding 4 × 4 matrix keyboard can be with as shown in figure 8, can also be by keyboard【Screens switch】It presses
Key sets interface switching voltage output control interface and network parameter and passes through【Output/stopping】Button is corresponding to carry out
The output of voltage value/stop operation.
(6) client
In order to realize needs of the user to the remote control of d.c.voltage calibrator and sequencing manipulation, the embodiment of the present invention
In also developed a set of client control software (abbreviation client, i.e. DC voltage shown in Fig. 3 calibration client).The client
End control software can be developed by LabView2011, have many advantages, such as beautiful interface, easy to operate, for example, the visitor
The initial interface of family end control software can be as shown in Figure 9.
Specifically, the client control software can possess following functions feature during designing and developing：
1) network connection state test can be carried out automatically, to ensure the reliability of network connection；
2) the output operation of remote voltage value, i.e. remote control voltage output process can be carried out, realizes remote voltage calibration
Operation control；
3) can Dynamic Announce current output voltage oscillogram (be similar to oscillograph) and command information, for example, such as Figure 10 institutes
Show, display passes through remote control voltage output interface display output voltage；
4) can setting procedureization output, including output voltage, continuous output time and interval time (or dwell time) etc.；
For example, as shown in figure 11, in input frame from left to right that can be in interface input set output voltage values, the duration and
Dwell time is set with completing corresponding procedure output；Further, the information of setting can be stored under the path specified
Spare, corresponding preservation interface is as shown in figure 12；
The realization method exported by the procedure can be according to the output voltage values, continuous output time and interval of setting
The pre-set multiple voltage calibration tasks of time automated execution；
5) can timing, output services tasks is quantitatively set, you can to specify the time and execution that operational order performs
Parameter (i.e. output voltage values) is held for example, inputting to set as shown in figure 13, in input frame from left to right that can be in interface
The information such as row time, voltage value and duration；Equally, corresponding configuration information can be performed by saving button and preserve behaviour
Make；
By the timing, quantitatively the processing mode of setting output services task can be realized and meet pre-set electricity
Press calibration tasks perform condition when according to pre-set output voltage values and continuous output time automated execution voltage school
Quasi- task；Wherein, the voltage calibration task execution condition can include：Specified time (the execution time specified) specifies
Time interval (the execution interval time specified) etc.；And the voltage calibration of the automated execution when a predetermined condition is satisfied
Task is one or more.
It can be seen that an embodiment of the present invention provides a realization prices by the above-mentioned description for the embodiment of the present invention
It is cheap, but have excellent performance, program control type High-accuracy direct current voltage calibrator easy to operate.Its height output precision is very high, Ke Yida
To 10uV magnitudes；With compared with wide operating temperature range, output accuracy can be kept in 0~+40 DEG C of environment；Meanwhile it is implemented as
This is relatively low, and complete machine hardware cost is no more than 4000 yuan.This d.c.voltage calibrator can meet earthquake observating station for
The use demand that DC voltage class observation instrument is calibrated, while the demand of other similar industries is also applied for, have extensive
Application prospect.
Further, program control type High-accuracy direct current voltage calibrator provided in an embodiment of the present invention be also equipped with local control and
Two kinds of operating modes of remote control make user that need not rush towards scene and are operated, convenient on using, flexible, disclosure satisfy that all
The field of such as unattended station specific demand, is with a wide range of applications.
In addition, program control type High-accuracy direct current voltage calibrator provided in an embodiment of the present invention also has procedure control output
The programme-control output function of " timing quantifies ", can solve the problems, such as a large amount of repetitive operations and specific time is waited to carry out
The problem of operation, has saved time and cost of labor, has good social benefit.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of d.c.voltage calibrator, which is characterized in that including thermostat, a reference source mould is provided in the thermostat
Block, program-controlled voltage output module and central processing module, wherein：
Benchmark source module, for exporting stable reference voltage；
Program-controlled voltage output module is connected with the reference voltage output end of the benchmark source module, is used to implement DC voltage
Quantitative output；
Central processing module is connected with the program-controlled voltage output module, for controlling the defeated of the program-controlled voltage output module
Go out；
The central processing module is also connected with controlling with display module, which is used for the voltage that will be received with display module
Operational order in calibration process sends the central processing module to and will be in the voltage calibration process of central processing module
Output information display output.
2. d.c.voltage calibrator according to claim 1, which is characterized in that the central processing module is also associated with net
Network interface module can obtain what remote terminal was sent by network using central processing module described in the Network Interface Module
Operational order in voltage calibration process and the output information in the voltage calibration process of central processing module is passed through into network
It is sent to remote terminal.
3. d.c.voltage calibrator according to claim 2, which is characterized in that the benchmark source module uses
LZT1000 chips are realized；The central processing module is using the realization of microcontroller plate, W5100 nets built in the microcontroller plate
Network protocol converter；The program-controlled voltage output module using AD5791 chips realize, benchmark input using external amplifier into
Row is detected and is attached using unity gain configuration mode with output amplifier, and uses AD8675 two-path amplifiers
Support device as AD5791.
4. according to the d.c.voltage calibrator described in claim 1,2 or 3, which is characterized in that the control and display module bag
It includes：LED display and 4 × 4 matrix keyboards.
5. a kind of DC voltage calibrates client, which is characterized in that the client be used for described in any one of claim 2 to 4
D.c.voltage calibrator communicated by network, and the client includes：
Network connecting module connects for being established with network, and passes through network and establish connection with the central processing module；
Display processing module, the output in the voltage calibration process sent for showing the central processing module by network
Information；
Control process module is operated, is referred to for passing through operation of the network into central processing module transmission voltage calibration process
Order.
6. DC voltage according to claim 5 calibrates client, which is characterized in that further includes network connection detection mould
Block is tested for the network connection state to the network connecting module.
7. DC voltage according to claim 5 calibrates client, which is characterized in that further includes task management module, uses
According to pre-set output voltage values and when persistently exporting when pre-set voltage calibration task execution condition is being met
Between voltage calibration task described in automated execution, alternatively, according to the output voltage values, continuous output time and interval time of setting from
It is dynamic to perform pre-set multiple voltage calibration tasks.
8. DC voltage according to claim 7 calibrates client, which is characterized in that the voltage calibration tasks carrying item
Part includes：Specified time or specified time interval；And the voltage calibration of the automated execution when a predetermined condition is satisfied is appointed
It is engaged in as one or more.
9. client is calibrated according to claim 5 to 8 any one of them DC voltage, which is characterized in that the display processing
Module includes：
Voltage output control interface module, for showing that voltage of the program-controlled voltage output module in voltage calibration process is defeated
Go out value；
Network parameter sets interface module, and for setting local network parameter, the network parameter includes IP address, subnet mask
And gateway information.
10. DC voltage according to claim 9 calibrates client, which is characterized in that further includes：
Thresholding controls management module, determines never to receive voltage calibration mistake within threshold value period predetermined time for working as
During operational order in journey, then the voltage output for stopping the program-controlled voltage output module is controlled；
The voltage output control interface module is additionally operable to show the time gate limit value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711377919.2A CN108089239A (en) | 2017-12-19 | 2017-12-19 | A kind of d.c.voltage calibrator and client |
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| CN201711377919.2A CN108089239A (en) | 2017-12-19 | 2017-12-19 | A kind of d.c.voltage calibrator and client |
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