CN207676202U - A kind of signal regulating device for dcs test - Google Patents
A kind of signal regulating device for dcs test Download PDFInfo
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- CN207676202U CN207676202U CN201721778011.8U CN201721778011U CN207676202U CN 207676202 U CN207676202 U CN 207676202U CN 201721778011 U CN201721778011 U CN 201721778011U CN 207676202 U CN207676202 U CN 207676202U
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- circuit
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- test
- modulate circuit
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Abstract
The utility model is related to a kind of signal regulating devices for dcs test,Including switch method of remote signal circuit,Analog input modulate circuit,Analog output modulate circuit,Analog quantity improves built-up circuit and power supply transfer circuit,Analog quantity improve built-up circuit respectively with Process calibrator,Dcs,Analog input modulate circuit,Analog output modulate circuit and the electrical connection of switch method of remote signal circuit,Analog input modulate circuit,Analog output modulate circuit and switch method of remote signal circuit respectively with industry control mechatronics,The control signal switch test channel provided according to industrial personal computer,Realize the automatic switchover of performance test and functional test,Pass through the reasonable cooperation of Process calibrator and Add-subtract Baoyuantang,Ensure that signal performance index is verified using Process calibrator,Improve the confidence level of test result.
Description
Technical field
The utility model is related to signal condition field more particularly to a kind of signal tune for dcs test
Manage device.
Background technology
In dcs, 4-20mA current signals are common industrial standard signals, analog quantity in complication system
Channel all at hundreds of or more.There is performance survey for the test activity of 4-20mA current signals in dcs at present
Two kinds of examination and functional test, wherein performance test, especially accuracy test are more demanding to the performance indicator of test equipment, and
Test equipment mainly has two kinds of desk-top instrument and card insert type instrument at present, wherein desk-top Meter Test performance is high, but is provided
TCH test channel it is relatively fewer, volume is larger, and equipment is expensive, cannot meet the automatic test requirement of large scale system, and inserts
Add-subtract Baoyuantang can provide multiple TCH test channels, and small volume is easily integrated, and disclosure satisfy that complication system multichannel while measuring
Requirement, but in contrast, the measurement accuracy of card insert type instrument is limited, cannot meet performance test requirement.Currently used for surveying
The automatic test device of examination distributed centralization system primarily focuses on functional verification, is adopted simultaneously using the multichannel of card instrument
The system signal of collection monitoring dcs, the index in channel is checked according to preset criterion.When needing TCH test channel
When the performance indicators such as precision, resolution ratio, the channel of dcs and automatic test device are disconnected, reused desk-top
Or hand-held high precision process prover one by one verifies each channel, inefficiency.
Invention content
Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, to provide a kind of for being distributed
The signal regulating device of formula control system test.
The technical solution that the utility model solves above-mentioned technical problem is as follows：It is a kind of to be used for what dcs was tested
Signal regulating device, including switch method of remote signal circuit, analog input modulate circuit, analog output modulate circuit, simulation
Amount conditioning built-up circuit and power supply transfer circuit, the analog quantity conditioning built-up circuit respectively with the dcs,
Analog input modulate circuit, analog output modulate circuit and the electrical connection of switch method of remote signal circuit, the analog quantity conditioning
Built-up circuit is electrically connected with Process calibrator, the switch method of remote signal circuit and industry control mechatronics, the analog input
Modulate circuit and analog output modulate circuit improve built-up circuit and the industry control mechatronics, institute by the analog quantity
It is electric with the switch method of remote signal circuit, analog input modulate circuit, analog output conditioning respectively to state power supply transfer circuit
Road and analog quantity conditioning built-up circuit electrical connection.
The utility model has the beneficial effects that：It can by the signal regulating device for dcs test
To realize the automatic switchover of performance test and functional test, pass through the reasonable of the Process calibrator and industrial personal computer intermediate champing instrument
Cooperation ensures that signal performance index is verified using the Process calibrator, improves the confidence level of test result.
Based on the above technical solution, the utility model can also do following improvement：
Further：The analog quantity conditioning built-up circuit includes decoder circuit, switch arrays circuit, TCH test channel and biography
Defeated channel, the decoder circuit and switch arrays circuit are sequentially connected electrically in the switch method of remote signal circuit and distributed control
Between system processed, the switch arrays circuit is electrically connected with TCH test channel, the TCH test channel respectively with the Process calibrator
It is electrically connected with analog input modulate circuit, the transmission channel is connected electrically in the industrial personal computer and analog input modulate circuit
Between, the transmission channel is connected electrically between the industrial personal computer and analog output modulate circuit.
The advantageous effect of above-mentioned further scheme is：The analog quantity improves built-up circuit according to the channel switching control
Signal will need the measured signal of performance indicator to export to the Process calibrator to be tested for the property, and will need functional parameter
Measured signal export to the analog input modulate circuit carry out signal condition, to realize functional test and performance test simultaneously
Row carries out, and functional test and performance test are independent of one another, do not interfere with each other.
Further：The analog input modulate circuit includes resistance, and the both ends of the resistance are logical with the test respectively
Road and transmission channel electrical connection.
The advantageous effect of above-mentioned further scheme is：The resistance converts measured signal to the industrial personal computer and can identify
Voltage signal, and the voltage signal is exported by the transmission channel to the industrial personal computer, to realize measured signal
Functional verification.
Further：The analog output modulate circuit includes signal acquisition circuit and operational amplification circuit, the signal
Acquisition Circuit and operational amplification circuit are in sequential series between the industrial personal computer and analog quantity conditioning built-up circuit.
The advantageous effect of above-mentioned further scheme is：The active signal of the industrial personal computer output is by signal acquisition electricity
Behind road and operational amplification circuit, it is converted into active/passive signal, the active/passive signal is turned by analog quantity conditioning
It connects to dcs described in circuit output, to provide signal source.
Further：The signal regulating device for dcs test further includes backboard, the backboard packet
Card slot position, back of the body card slot position and DIN connector, the preceding card slot position and rear card slot position pass through the European company before including
Device electrical connection is connect, the analog input modulate circuit and analog output modulate circuit are electrically connected with the preceding card slot position
It connects, the switch method of remote signal circuit, analog quantity conditioning built-up circuit and power supply transfer circuit are electric with the rear card slot position
Connection.
The advantageous effect of above-mentioned further scheme is：The analog input modulate circuit, analog output modulate circuit,
Switch method of remote signal circuit, analog quantity conditioning built-up circuit and power supply transfer circuit are integrated by the backboard, convenient
It uses, and the circuit of preceding card slot position connection is responsible for the conditioning of signal, the circuit of rear card slot position connection is responsible for the input of signal
With output, the connection of circuit when easy to use.
Description of the drawings
Fig. 1 is the circuit structure signal of the signal regulating device for dcs test of the utility model
Figure.
Specific implementation mode
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of signal regulating device for dcs test, including switch method of remote signal electricity
Road, analog input modulate circuit, analog output modulate circuit, analog quantity conditioning built-up circuit and power supply transfer circuit, institute
State analog quantity conditioning built-up circuit respectively with the dcs, analog input modulate circuit, analog output tune
Circuit and the electrical connection of switch method of remote signal circuit are managed, the analog quantity conditioning built-up circuit is electrically connected with Process calibrator, described
Switch method of remote signal circuit and industry control mechatronics, the analog input modulate circuit and analog output modulate circuit are logical
The analog quantity conditioning built-up circuit and the industry control mechatronics are crossed, the power supply transfer circuit switches with the signal respectively
Control circuit, analog input modulate circuit, analog output modulate circuit and analog quantity conditioning built-up circuit electrical connection.
The control signal condition that the switch method of remote signal circuit is used to export the industrial personal computer is channel switching control
Signal, and the channel switch-over control signal is exported and improves built-up circuit to analog quantity；The analog quantity improves built-up circuit
Active signal for exporting the industrial personal computer is exported to analog output modulate circuit, and the analog output is improved
The active/passive signal of circuit output is exported to the dcs, to provide signal source, is additionally operable to receive described point
The measured signal of cloth control system output, and exported the measured signal to described according to the channel switch-over control signal
Process calibrator is exported the measured signal to analog quantity according to the channel switch-over control signal with being tested for the property
Input modulate circuit；The analog input modulate circuit is used to receive the measured signal, is by measured signal conditioning
Voltage signal, and built-up circuit is improved by the analog quantity and exports the voltage signal to the industrial personal computer；The simulation
Amount output modulate circuit is improved for receiving the active signal, and by the active signal to be exported after active/passive signal
Built-up circuit is improved to the analog quantity.
The signal regulating device for dcs test of the utility model, may be implemented performance test and work(
The automatic switchover that can be tested, passes through the reasonable cooperation of the Process calibrator and Add-subtract Baoyuantang, ensures that signal performance index uses
The Process calibrator is verified, and the confidence level of test result is improved.
In the present embodiment, the analog quantity conditioning built-up circuit includes decoder circuit, switch arrays circuit, TCH test channel
And transmission channel, the decoder circuit and switch arrays circuit are sequentially connected electrically in the switch method of remote signal circuit and distribution
Between formula control system, the switch arrays circuit is electrically connected with TCH test channel, the TCH test channel respectively with the process school
Quasi- instrument and the electrical connection of analog input modulate circuit, the transmission channel are connected electrically in the industrial personal computer and analog input conditioning
Between circuit, the active signal that the industrial personal computer exports is exported to the analog output modulate circuit, the transmission
Channel is connected electrically between the industrial personal computer and analog output modulate circuit, by analog output modulate circuit output
The voltage signal exports to the industrial personal computer and carries out functional test.
Specifically, the measured signal is 16 road 4-20mA current signals, and the decoder circuit is decoded using 4-16 lines
Device, the TCH test channel includes 16 performance TCH test channels and 16 functional test channels, by the 4-16 lines decoder by 6
Paths switch-over control signal is converted into 16 road relay control signals, and the switch arrays are used for according to No. 16 relay
Signal switch test channel is controlled, the TCH test channel exports the measured signal for needing performance indicator by performance TCH test channel
Be tested for the property to the Process calibrator, and by the measured signal for needing functional parameter by functional test channel export to
The analog input modulate circuit carries out signal condition, and to realize that functional test and performance test carry out parallel, and function is surveyed
Examination and performance test are independent of one another, do not interfere with each other.
In the present embodiment, the analog input modulate circuit includes resistance, the both ends of the resistance respectively with the survey
It pings and transmission channel is electrically connected.
Specifically, the resistance value of the resistance is 250 ohm, is converted 16 road 4-20mA current signals to by the resistance
The 16 road 1-5V voltage signals that the industrial personal computer can identify, and the 16 road 1-5V voltage signals are exported to the industry control
Machine, to realize the functional verification of measured signal.
In the present embodiment, the analog output modulate circuit includes signal acquisition circuit and operational amplification circuit, described
Signal acquisition circuit and operational amplification circuit are in sequential series between the industrial personal computer and analog quantity conditioning built-up circuit.
Specifically, the active signal of industrial personal computer output is the active 1-5V voltage signals in 16 tunnels, passes through signal acquisition electricity
Road and operational amplification circuit convert the active 1-5V voltage signals in 16 tunnel to 16 road active/passive 4-20mA current signals,
The 16 road active/passive 4-20mA current signals improve built-up circuit by the analog quantity and export to the distributed AC servo system
System, to provide signal source.
Preferably, the signal regulating device for dcs test further includes backboard, the backboard packet
Card slot position, back of the body card slot position and DIN connector, the preceding card slot position and rear card slot position pass through the European company before including
Device electrical connection is connect, the analog input modulate circuit and analog output modulate circuit are electrically connected with the preceding card slot position
It connects, the switch method of remote signal circuit, analog quantity conditioning built-up circuit and power supply transfer circuit are electric with the rear card slot position
Connection.
The switch method of remote signal circuit, analog quantity conditioning built-up circuit and power supply transfer circuit with it is described after card slot
Position electrical connection.The analog input modulate circuit, analog output modulate circuit, switch method of remote signal circuit, analog quantity tune
Reason built-up circuit and power supply transfer circuit are integrated by the backboard, easy to use, and the electricity of preceding card slot position connection
The conditioning of signal is responsible on road, and the circuit of rear card slot position connection is responsible for the input and output of signal, the company of circuit when easy to use
It connects.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of signal regulating device for dcs test, which is characterized in that including switch method of remote signal electricity
Road, analog input modulate circuit, analog output modulate circuit, analog quantity conditioning built-up circuit and power supply transfer circuit, institute
State analog quantity conditioning built-up circuit respectively with the dcs, analog input modulate circuit, analog output tune
Circuit and the electrical connection of switch method of remote signal circuit are managed, the analog quantity conditioning built-up circuit is electrically connected with Process calibrator, described
Switch method of remote signal circuit and industry control mechatronics, the analog input modulate circuit and analog output modulate circuit are logical
The analog quantity conditioning built-up circuit and the industry control mechatronics are crossed, the power supply transfer circuit switches with the signal respectively
Control circuit, analog input modulate circuit, analog output modulate circuit and analog quantity conditioning built-up circuit electrical connection.
2. the signal regulating device according to claim 1 for dcs test, which is characterized in that described
Analog quantity conditioning built-up circuit includes decoder circuit, switch arrays circuit, TCH test channel and transmission channel, the decoder electricity
Road and switch arrays circuit are sequentially connected electrically between the switch method of remote signal circuit and dcs, the switch
Array circuit is electrically connected with TCH test channel, the TCH test channel respectively with the Process calibrator and analog input modulate circuit
Electrical connection, the transmission channel are connected electrically between the industrial personal computer and analog input modulate circuit, the transmission channel electricity
It is connected between the industrial personal computer and analog output modulate circuit.
3. the signal regulating device according to claim 2 for dcs test, which is characterized in that described
Analog input modulate circuit includes resistance, and the both ends of the resistance are electrically connected with the TCH test channel and transmission channel respectively.
4. the signal regulating device according to claim 1 for dcs test, which is characterized in that described
Analog output modulate circuit includes signal acquisition circuit and operational amplification circuit, and the signal acquisition circuit and operation amplifier are electric
Road is in sequential series between the industrial personal computer and analog quantity conditioning built-up circuit.
5. the signal regulating device according to claim 1 for dcs test, which is characterized in that also wrap
Include backboard, the backboard includes preceding card slot position, rear card slot position and DIN connector, the preceding card slot position and rear card slot
Position is electrically connected by the DIN connector, the analog input modulate circuit and analog output modulate circuit with it is described
The electrical connection of preceding card slot position, the switch method of remote signal circuit, analog quantity conditioning built-up circuit and power supply transfer circuit are and institute
State rear card slot position electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721778011.8U CN207676202U (en) | 2017-12-18 | 2017-12-18 | A kind of signal regulating device for dcs test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721778011.8U CN207676202U (en) | 2017-12-18 | 2017-12-18 | A kind of signal regulating device for dcs test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207676202U true CN207676202U (en) | 2018-07-31 |
Family
ID=62969228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721778011.8U Active CN207676202U (en) | 2017-12-18 | 2017-12-18 | A kind of signal regulating device for dcs test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207676202U (en) |
-
2017
- 2017-12-18 CN CN201721778011.8U patent/CN207676202U/en active Active
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