CN208795795U - Analogue signal acquisition circuit and collection of simulant signal system - Google Patents
Analogue signal acquisition circuit and collection of simulant signal system Download PDFInfo
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- CN208795795U CN208795795U CN201821459729.5U CN201821459729U CN208795795U CN 208795795 U CN208795795 U CN 208795795U CN 201821459729 U CN201821459729 U CN 201821459729U CN 208795795 U CN208795795 U CN 208795795U
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Abstract
Analogue signal acquisition circuit and collection of simulant signal system provided by the utility model, is related to collection of simulant signal technical field.Wherein, analogue signal acquisition circuit includes: voltage signal acquisition unit, and the input terminal of the voltage signal acquisition unit is connect with the anode of analog signal output circuit to be collected, output end is connect with the negative terminal of the analog signal output circuit；Resistance value is less than the current signal acquisition unit of the resistance value of the voltage signal acquisition unit, and the input terminal of the current signal acquisition unit is connect with the input terminal of the voltage signal acquisition unit；Signal acquisition switch unit, the control terminal of the signal acquisition switch unit is connect with the output end of the controller, input terminal is connect with the output end of the current signal acquisition unit, output end is connect with the output end of the voltage signal acquisition unit.By above-mentioned setting, there is inconvenience in the acquisition that can improve analog signal in the prior art.
Description
Technical field
The utility model relates to collection of simulant signal technical fields, in particular to a kind of analogue signal acquisition circuit
With collection of simulant signal system.
Background technique
With the development of industry control industry, collection of simulant signal function has been used as a basic functional requirement, is applied to
The various aspects of industrial control field.Analog signal generally comprises current signal and voltage signal, also, believes in acquisition for electric current
Number and voltage signal can be generally acquired by different acquisition units.
Through inventor the study found that in existing analog signal acquisition method, need to be arranged wire jumper or toggle switch
Current signal acquisition unit and voltage signal acquisition unit are switched over, accordingly, there exist inconvenient problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of analogue signal acquisition circuits and collection of simulant signal system
System, to improve the above problem.
To achieve the above object, the utility model embodiment adopts the following technical scheme that
A kind of analogue signal acquisition circuit, applied to a kind of collection of simulant signal system including controller, the simulation
Signal acquisition circuit includes:
Voltage signal acquisition unit, the input terminal of the voltage signal acquisition unit and analog signal output circuit to be collected
Anode connection, output end connect with the negative terminal of the analog signal output circuit；
Resistance value is less than the current signal acquisition unit of the resistance value of the voltage signal acquisition unit, which adopts
The input terminal of collection unit is connect with the input terminal of the voltage signal acquisition unit；
Signal acquisition switch unit, the control terminal of the signal acquisition switch unit connect with the output end of the controller,
Input terminal connect with the output end of the current signal acquisition unit, the output end of output end and the voltage signal acquisition unit
Connection；
Wherein, in the analog signal output circuit output current signal, the signal acquisition switch unit is based on institute
The control signal conduction of controller is stated, which is converted to voltage signal and exports by the current signal acquisition unit
To the controller；
In the analog signal output circuit output voltage signal, the signal acquisition switch unit is based on the control
The control signal of device turns off, which exports by the voltage signal acquisition unit to the controller.
In the utility model embodiment preferably selects, the signal acquisition switch unit includes:
Switching device, input terminal of the high voltage end of the switching device as the signal acquisition switch unit, low-voltage
Hold the control terminal of output end, control terminal as the signal acquisition switch unit as the signal acquisition switch unit.
In the utility model embodiment preferably selects, above-mentioned switching device is photoelectrical coupler, the photoelectrical coupler
Include:
Light emitting diode, control terminal of the minus earth, anode of the light emitting diode as the switching device；
The triode being correspondingly arranged with the light emitting diode, one in the collector and emitter of the triode is used as institute
State high voltage end, another low-voltage end as the switching device of switching device.
In the utility model embodiment preferably selects, signal acquisition switch unit further include:
First resistor, one end of the first resistor is connect with the anode of the light emitting diode, the other end is as the letter
Number acquisition switch unit control terminal.
In the utility model embodiment preferably selects, the current signal acquisition unit includes second resistance, this
One end of two resistance is as the input terminal of the current signal acquisition unit, the other end as the current signal acquisition unit
Output end.
In the utility model embodiment preferably selects, the voltage signal acquisition unit includes 3rd resistor, this
One end of three resistance is as the input terminal of the voltage signal acquisition unit, the other end as the voltage signal acquisition unit
Output end.
In the utility model embodiment preferably selects, the resistance value of the second resistance is 100 Ω, the 3rd resistor
Resistance value be 10M Ω.
In the utility model embodiment preferably selects, above-mentioned analogue signal acquisition circuit further include:
Analog acquisition chip, the input terminal of the input side of the analog acquisition chip and the voltage signal acquisition unit
Be separately connected with output end, outlet side is connect with the controller, with collection voltages signal.
In the utility model embodiment preferably selects, analog acquisition chip is 16 signal acquisition chips.
The utility model embodiment additionally provides a kind of collection of simulant signal system, including controller and collection of simulant signal
Circuit, the analogue signal acquisition circuit include:
Voltage signal acquisition unit, the input terminal of the voltage signal acquisition unit and analog signal output circuit to be collected
Anode connection, output end connect with the negative terminal of the analog signal output circuit；
Resistance value is less than the current signal acquisition unit of the resistance value of the voltage signal acquisition unit, which adopts
The input terminal of collection unit is connect with the input terminal of the voltage signal acquisition unit；
Signal acquisition switch unit, the control terminal of the signal acquisition switch unit connect with the output end of the controller,
Input terminal connect with the output end of the current signal acquisition unit, the output end of output end and the voltage signal acquisition unit
Connection；
Wherein, in the analog signal output circuit output current signal, the signal acquisition switch unit is based on institute
The control signal conduction of controller is stated, which is converted to voltage signal and exports by the current signal acquisition unit
To the controller；
In the analog signal output circuit output voltage signal, the signal acquisition switch unit is based on the control
The control signal of device turns off, which exports by the voltage signal acquisition unit to the controller.
Analogue signal acquisition circuit and collection of simulant signal system provided by the utility model, passes through voltage signal acquisition list
Member, current signal acquisition unit and signal acquisition switch unit are equipped with, so that the signal acquisition switch unit energy
It is enough that signal control current signals or voltage signal are controlled based on the difference that controller is different according to the type of analog signal and exports
Acquisition, thus avoid in the prior art because need to be arranged wire jumper or toggle switch come to the current signal acquisition unit and
The voltage signal acquisition unit switches over and there is a problem of inconvenient.
Further, by the setting of photoelectrical coupler, can completely cut off between circuit (such as control side and by control side)
It interferes with each other, thus the problem of the precision of the collection of simulant signal improved.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is collection of simulant signal systematic difference schematic diagram provided by the embodiment of the utility model.
Fig. 2 is the structural block diagram of analogue signal acquisition circuit provided by the embodiment of the utility model.
Fig. 3 is the circuit diagram of analogue signal acquisition circuit provided by the embodiment of the utility model.
Fig. 4 is another structural block diagram of analogue signal acquisition circuit provided by the embodiment of the utility model.
Icon: 10- collection of simulant signal system；100- analogue signal acquisition circuit；110- voltage signal acquisition unit；
120- current signal acquisition unit；130- signal acquisition switch unit；U1- switching device；R1- first resistor；The second electricity of R2-
Resistance；R3- 3rd resistor；140- analog acquisition chip；200- controller；300- analog signal output circuit.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Usually retouched in attached drawing here
The component of the utility model embodiment stated and shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In the utility model
In description, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as only or imply relatively heavy
The property wanted.
In the description of the present invention, unless otherwise clearly defined and limited, term " setting ", " connected ", " company
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this with concrete condition
Concrete meaning in type.
As shown in Figure 1, the utility model embodiment provides a kind of collection of simulant signal system 10, for defeated to analog signal
The analog signal that circuit 300 exports out is acquired.Wherein, the collection of simulant signal system 10 may include that analog signal is adopted
Collector 100 and controller 200.
In detail, the output of the input terminal of the analogue signal acquisition circuit 100 and the analog signal output circuit 300
End is connected to receive the input of analog signal, output end and the controller 200 that the analog signal output circuit 300 exports
End connection is with by received analog signal output to the controller 200, to complete the acquisition to analog signal.Also, it is described
The input terminal of controller 200 also connect with the output end of the analogue signal acquisition circuit 100, output end and the analog signal
The control terminal of Acquisition Circuit 100 connects, to judge the type of the analog signal of the output of analog signal output circuit 300, and
The different units for controlling the analogue signal acquisition circuit 100 based on the type are acquired work.
Wherein, the type of the analog signal includes current signal and voltage signal.It also, is electricity in the analog signal
When pressing signal, directly the signal can be exported to the control when analogue signal acquisition circuit 100 receives the signal
Device 200.When the analog signal is current signal, the analogue signal acquisition circuit 100 can convert the signal into electricity
It presses signal and exports to the controller 200.
Optionally, the type of the controller 200 is unrestricted, can be configured according to practical situations, for example,
It can be general processor, including central processing unit (Central Processing Unit, CPU), network processing unit
(Network Processor, NP) etc.；It can also be digital signal processor (DSP), specific integrated circuit (ASIC), ready-made
Programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware group
Part etc. as long as the voltage signal that the analogue signal acquisition circuit 100 exports can be received, and is based on the analog signal output
The type for the analog signal to be collected that circuit 300 exports sends different control signals to the analogue signal acquisition circuit
100 control terminal.
In conjunction with Fig. 2, the utility model embodiment also provides a kind of mould that can be applied to above-mentioned collection of simulant signal system 10
Quasi- signal acquisition circuit 100.Wherein, the analogue signal acquisition circuit 100 may include voltage signal acquisition unit 110, electricity
Flow signal acquisition unit 120 and signal acquisition switch unit 130.
In detail, the anode of the input terminal of the voltage signal acquisition unit 110 and the analog signal output circuit 300
Connection, output end are connect with the negative terminal of the analog signal output circuit 300, the input terminal of the current signal acquisition unit 120
It is connect with the input terminal of the voltage signal acquisition unit 110, the control terminal and the control of the signal acquisition switch unit 130
Device 200 processed output end connection, input terminal connect with the output end of the current signal acquisition unit 120, output end with it is described
The output end of voltage signal acquisition unit 110 connects.
Wherein, in 300 output current signal of analog signal output circuit, the signal acquisition switch unit 130
Based on the control signal conduction of the controller 200, which is converted to electricity by the current signal acquisition unit 120
It presses signal and exports to the controller 200.In 300 output voltage signal of analog signal output circuit, the signal
It acquires switch unit 130 to turn off based on the control signal of the controller 200, which passes through the voltage signal acquisition
Unit 110 is exported to the controller 200.
Pass through matching for voltage signal acquisition unit 110, current signal acquisition unit 120 and signal acquisition switch unit 130
Setting is closed, so that the signal acquisition switch unit 130 can be different and defeated according to the type of analog signal based on controller 200
The acquisition mode of different control signal control current signals or voltage signal out, to avoid being jumped in the prior art because needing to be arranged
There is operation switching over to voltage signal acquisition unit 110 and current signal acquisition unit 120 in line or toggle switch
Inconvenient problem.
In detail, in order to realize cutting to the voltage signal acquisition unit 110 and the current signal acquisition unit 120
Change control, can resistance value and the current signal acquisition unit 120 to the voltage signal acquisition unit 110 resistance value
It is configured.For example, it may be the resistance value of the current signal acquisition unit 120 is much smaller than the voltage signal acquisition unit
110 resistance value, so that in the current signal acquisition unit 120 conducting, what the analog signal output circuit 300 exported
Current signal is only smaller after the shunting of the voltage signal acquisition unit 110 and the current signal acquisition unit 120
A part flow through the voltage signal acquisition unit 110.That is, to a certain extent, it is believed that flow through the electricity
The current signal of stream signal acquisition unit 120 is equal to the current signal that the analog signal output circuit 300 exports.Therefore,
By acquiring the voltage value at 120 both ends of current signal acquisition unit, may be implemented to the analog signal output circuit 300
The acquisition of the current signal of output.
It is understood that above-mentioned as described in " being much smaller than " in description, specific numerical values recited is unrestricted, can basis
Practical application request is defined, for example, difference or ratio between the two can be got over when the acquisition precision of needs is higher
Greatly, if the ratio of the resistance value of voltage signal acquisition unit 110 and the resistance value of current signal acquisition unit 120 can be 105。
Optionally, the number amount and type for the electrical component that the voltage signal acquisition unit 110 includes are unrestricted, can be with
It is configured according to practical application request.In the present embodiment, in conjunction with Fig. 3, as the example that one kind can substitute, the voltage
Signal acquisition unit 110 may include 3rd resistor R3.
Wherein, one end of the 3rd resistor R3 is as input terminal, the other end of the voltage signal acquisition unit 110
The output end of the voltage signal acquisition unit 110.That is, one end of 3rd resistor R3 and the analog signal output
The anode connection of circuit 300, the other end are connect with the negative terminal of the analog signal output circuit 300.
Optionally, the number amount and type for the electrical component that the current signal acquisition unit 120 includes are unrestricted, can be with
It is configured according to practical application request.In the present embodiment, the example that can be substituted as one kind, the current signal acquisition
Unit 120 may include second resistance R2.
Wherein, one end of the second resistance R2 is as input terminal, the other end of the current signal acquisition unit 120
The output end of the current signal acquisition unit 120.That is, one end of second resistance R2 and the voltage signal acquisition
The input terminal connection of unit 110, the other end are connect with the input terminal of the signal acquisition switch unit 130.
Optionally, the specific size of the second resistance R2 and the 3rd resistor R3 are unrestricted, as long as described in guaranteeing
The resistance value of second resistance R2 is much smaller than the resistance value of the 3rd resistor R3.In the present embodiment, it can be replaced in one kind
In the example in generation, the resistance value of the second resistance R2 can be 100 Ω, and the resistance value of the 3rd resistor R3 can be 10M
Ω。
Optionally, the number amount and type for the electrical component that the signal acquisition switch unit 130 includes are unrestricted, can be with
It is configured according to practical application request.In the present embodiment, the example that can be substituted as one kind, the signal acquisition switching
Unit 130 may include switching device U1.
Wherein, input terminal, low electricity of the high voltage end of the switching device U1 as the signal acquisition switch unit 130
Output end, control terminal control as the signal acquisition switch unit 130 of the pressure side as the signal acquisition switch unit 130
End processed.That is, the high voltage end of the switching device U1 connect with the output end of the current signal acquisition unit 120,
Low-voltage end is connect with the output end of the voltage signal acquisition unit 110, control terminal and the output end of the controller 200 connect
It connects.
Optionally, the type of the switching device U1 is unrestricted, can be configured according to practical application request, example
Such as, it can be triode, be also possible to photoelectrical coupler, as long as the control signal and basis of the controller 200 can be received
The control signal controls 120 on or off of current signal acquisition unit.In the present embodiment, the switching device
U1 can be photoelectrical coupler.
Wherein, the photoelectrical coupler may include light emitting diode and triode, the triode and described luminous two
Pole pipe is correspondingly arranged to receive the light letter that the light emitting diode is sent according to the control signal that the controller 200 is sent
Number, and control collector when receiving the optical signal and be connected with emitter.
In detail, the control terminal of the minus earth of the light emitting diode, anode as the switching device U1.Described three
One in the collector and emitter of pole pipe as the switching device U1 high voltage end, another is as the derailing switch
The low-voltage end of part U1.That is, the anode of the light emitting diode is connect with the output end of the controller 200, it is described
One in the collector and emitter of triode connect with the output end of the current signal acquisition unit 120, another with
The output end of the voltage signal acquisition unit 110 connects.
By the setting of photoelectrical coupler, the control signal of the controller 200 can receive and according to the control signal
Control the on or off of the current signal acquisition unit 120 with realize to the acquisition mode of current signal and voltage signal into
Row switching, to avoid coming because needing to be arranged wire jumper or toggle switch to the voltage signal acquisition unit in the prior art
110 and the current signal acquisition unit 120 switch over and there is a problem of inconvenient.Secondly, photoelectrical coupler can be with
Between isolation circuit (200 side of controller and 120 side of current signal acquisition unit) interferes with each other, and then improves and acquire
Precision.
Also, since photoelectrical coupler has the characteristics that the conducting resistance resistance value between collector and emitter is low, may be used also
Influence to avoid the conducting resistance to the current signal acquisition unit 120, adopts current signal with further improving
Collect precision.
Further, light emitting diode is caused to damage in order to avoid flowing into biggish electric current in the light emitting diode
The problem of, in the present embodiment, the signal acquisition switch unit 130 can also include first resistor R1, to shine to described
Diode carries out current-limiting protection.
Wherein, one end of the first resistor R1 is connect with the anode of the light emitting diode, the other end is as the letter
Number acquisition switch unit 130 control terminal.That is, including first electricity in the signal acquisition switch unit 130
When hindering R1, the anode of the light emitting diode is connect by the first resistor R1 with the output end of the controller 200.
Optionally, the size of the resistance value of the first resistor R1 is unrestricted, can be carried out according to practical application request
Setting, for example, can be configured according to effective operating current in the light emitting diode.In the present embodiment, described
The resistance value of one resistance R1 can be 1k Ω.
It is single to be acquired convenient for the controller 200 to the voltage signal acquisition unit 110 or current signal in conjunction with Fig. 4
The acquisition of the signal of 120 output of member, in the present embodiment, the analogue signal acquisition circuit 100 can also be adopted including analog quantity
Collect chip 140.
Wherein, the input terminal of the input side of the analog acquisition chip 140 and the voltage signal acquisition unit 110 and
Output end is separately connected, outlet side is connect with the controller 200, and the voltage signal of acquisition is converted to corresponding number and is believed
Number, and the controller 200 is sent to handle.
Optionally, the selection of the analog acquisition chip 140 is unrestricted, can be set according to practical application request
It sets, as long as collection voltages signal and corresponding digital signal can be converted to.In the present embodiment, the analog acquisition
Chip 140 can be 16 signal acquisition chips, to improve acquisition precision.
It is understood that the analog acquisition chip 140 is either as simulation in a kind of feasible example
A part (as described above) of signal acquisition circuit 100.In another feasible example, the analog acquisition chip
140 can be and be packaged in one with the controller 200, or can also be each circuit collection for including with the controller 200
At Yu Yiti, using a part as the controller 200.
In conclusion analogue signal acquisition circuit 100 provided by the utility model and collection of simulant signal system 10, pass through
Voltage signal acquisition unit 110, current signal acquisition unit 120 and signal acquisition switch unit 130 are equipped with, so that
The different controls that the signal acquisition switch unit 130 can be exported based on the controller 200 according to the difference of analog signal
The acquisition of signal control current signal or voltage signal processed, to avoid opening because needing to be arranged wire jumper or dial-up in the prior art
It closes to be switched over to the current signal acquisition unit 120 and the voltage signal acquisition unit 110 and there are inconvenient
The problem of.Further, by the setting of photoelectrical coupler, can completely cut off between circuit mutual (as controlled side and being controlled side)
It mutually interferes, thus the problem of the precision of the collection of simulant signal improved.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of analogue signal acquisition circuit, applied to a kind of collection of simulant signal system including controller, which is characterized in that
The analogue signal acquisition circuit includes:
Voltage signal acquisition unit, the input terminal of the voltage signal acquisition unit and analog signal output circuit to be collected are just
End connection, output end are connect with the negative terminal of the analog signal output circuit；
Resistance value is less than the current signal acquisition unit of the resistance value of the voltage signal acquisition unit, and current signal acquisition is single
The input terminal of member is connect with the input terminal of the voltage signal acquisition unit；
Signal acquisition switch unit, the control terminal of the signal acquisition switch unit connect with the output end of the controller, input
End is connect with the output end of the current signal acquisition unit, the output end of output end and the voltage signal acquisition unit connects
It connects；
Wherein, in the analog signal output circuit output current signal, the signal acquisition switch unit is based on the control
The control signal conduction of device processed, the current signal are converted to voltage signal by the current signal acquisition unit and export to institute
State controller；
In the analog signal output circuit output voltage signal, the signal acquisition switch unit is based on the controller
Signal shutdown is controlled, which exports by the voltage signal acquisition unit to the controller.
2. analogue signal acquisition circuit according to claim 1, which is characterized in that the signal acquisition switch unit packet
It includes:
The high voltage end of switching device, the switching device is made as input terminal, the low-voltage end of the signal acquisition switch unit
For the control terminal as the signal acquisition switch unit of output end, control terminal of the signal acquisition switch unit.
3. analogue signal acquisition circuit according to claim 2, which is characterized in that the switching device is photoelectric coupling
Device, the photoelectrical coupler include:
Light emitting diode, control terminal of the minus earth, anode of the light emitting diode as the switching device；
The triode being correspondingly arranged with the light emitting diode, one in the collector and emitter of the triode be used as described in open
Close high voltage end, another low-voltage end as the switching device of device.
4. analogue signal acquisition circuit according to claim 3, which is characterized in that signal acquisition switch unit further include:
First resistor, one end of the first resistor is connect with the anode of the light emitting diode, the other end is adopted as the signal
Collect the control terminal of switch unit.
5. analogue signal acquisition circuit according to any one of claims 1-4, the current signal acquisition unit include
Second resistance, one end of the second resistance is as the input terminal of the current signal acquisition unit, the other end as the electric current
The output end of signal acquisition unit.
6. analogue signal acquisition circuit according to claim 5, which is characterized in that the voltage signal acquisition unit includes
3rd resistor, one end of the 3rd resistor is as the input terminal of the voltage signal acquisition unit, the other end as the voltage
The output end of signal acquisition unit.
7. analogue signal acquisition circuit according to claim 6, which is characterized in that the resistance value of the second resistance is 100
Ω, the resistance value of the 3rd resistor are 10M Ω.
8. analogue signal acquisition circuit according to any one of claims 1-4, which is characterized in that further include:
Analog acquisition chip, the input terminal of the input side of the analog acquisition chip and the voltage signal acquisition unit and defeated
Outlet is separately connected, outlet side is connect with the controller, with collection voltages signal.
9. analogue signal acquisition circuit according to claim 8, which is characterized in that the letter that analog acquisition chip is 16
Number acquisition chip.
10. a kind of collection of simulant signal system, which is characterized in that including controller and analogue signal acquisition circuit, the simulation
Signal acquisition circuit includes:
Voltage signal acquisition unit, the input terminal of the voltage signal acquisition unit and analog signal output circuit to be collected are just
End connection, output end are connect with the negative terminal of the analog signal output circuit；
Resistance value is less than the current signal acquisition unit of the resistance value of the voltage signal acquisition unit, and current signal acquisition is single
The input terminal of member is connect with the input terminal of the voltage signal acquisition unit；
Signal acquisition switch unit, the control terminal of the signal acquisition switch unit connect with the output end of the controller, input
End is connect with the output end of the current signal acquisition unit, the output end of output end and the voltage signal acquisition unit connects
It connects；
Wherein, in the analog signal output circuit output current signal, the signal acquisition switch unit is based on the control
The control signal conduction of device processed, the current signal are converted to voltage signal by the current signal acquisition unit and export to institute
State controller；
In the analog signal output circuit output voltage signal, the signal acquisition switch unit is based on the controller
Signal shutdown is controlled, which exports by the voltage signal acquisition unit to the controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821459729.5U CN208795795U (en) | 2018-09-06 | 2018-09-06 | Analogue signal acquisition circuit and collection of simulant signal system |
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| CN201821459729.5U CN208795795U (en) | 2018-09-06 | 2018-09-06 | Analogue signal acquisition circuit and collection of simulant signal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505398A (en) * | 2020-12-15 | 2021-03-16 | 杭州和利时自动化有限公司 | AI device and system |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505398A (en) * | 2020-12-15 | 2021-03-16 | 杭州和利时自动化有限公司 | AI device and system |
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