CN207601618U - A kind of controllable temperature simulation output circuit - Google Patents
A kind of controllable temperature simulation output circuit Download PDFInfo
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- CN207601618U CN207601618U CN201721449623.2U CN201721449623U CN207601618U CN 207601618 U CN207601618 U CN 207601618U CN 201721449623 U CN201721449623 U CN 201721449623U CN 207601618 U CN207601618 U CN 207601618U
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- resistance
- resistance value
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- temperature
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Abstract
The utility model discloses a kind of controllable temperature simulation output circuits, including U1 microcontrollers, the U1 microcontrollers are connected separately with resistance value Acquisition Circuit and resistance value adjusts circuit, and the left end that the resistance value Acquisition Circuit left end and resistance value adjust circuit is connect with automobile controller.The beneficial effects of the utility model：The component cost that the utility model uses is relatively low, realizes wide scope, high-precision temperature output analog circuit at lower cost, avoids the high test and validation convenient for new energy vehicle controller of testing cost；With higher controllable temperature simulation context, temperature output area can reach 40 DEG C to 150 DEG C, and low temperature range can be expanded by increasing series resistance, there is higher temperature output accuracy simultaneously, temperature output accuracy reaches 0.5 DEG C, can adapt to it is nearly all under the conditions of validation test for temperature sensor range requirement and accuracy requirement.
Description
Technical field
The utility model is related to new energy vehicle controller technical field, it particularly relates to a kind of controllable temperature mould
Intend output circuit.
Background technology
Temperature simulation circuit is the important equipment of new energy vehicle controller verification, in the exploitation verification process of controller
In, need the output phase of access control device and battery pack at different temperatures should, in order to shorten the development cycle, reduce exploitation into
This, needs to design wide scope, high-precision temperature simulation circuit.Current most of vehicle factors by the way of NTC resistance come
Different temperature is simulated, but the temperature drift of NTC resistance is more serious, cause output temperature value unstable, and temperature output can not
Control.Therefore it needs to design a kind of controllable, wide scope, high-precision temperature simulation circuit, to adapt to different temperature range requirements.
Utility model content
For the above-mentioned technical problem in the relevant technologies, the utility model proposes a kind of controllable temperature simulations to export electricity
Road can overcome the above-mentioned deficiency of the prior art.
To realize the above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of controllable temperature simulation output circuit, including U1 microcontrollers, the U1 microcontrollers are connected separately with resistance value and adopt
Collector and resistance value adjust circuit, and the left end that the resistance value Acquisition Circuit left end and resistance value adjust circuit connects with automobile controller
It connects.
Further, the resistance value Acquisition Circuit includes difference amplifier U2, the difference amplifier U2 connections current limiting
The left end of resistance R4, the right end of the current-limiting resistance R4 connect the upper end of capacitance C1 and U1 microcontrollers respectively, the capacitance C1's
Lower end is grounded.
Further, the resistance value adjusts the right end connection that circuit includes digital regulation resistance R1, the digital regulation resistance R1
The left end of digital regulation resistance R2, the right end of the digital regulation resistance R2 connect the left end of resistance R3 and a left side of analog switch S1 respectively
End, the right end of the resistance R3 and the right end of analog switch S1 are grounded, wherein, the digital regulation resistance R1, digital regulation resistance
R2 and analog switch S1 are connect with U1 microcontrollers.
Further, the resistance value Acquisition Circuit left end and resistance value adjust the left end of circuit by testing harness and automobile
Controller connects.
The beneficial effects of the utility model：The component cost that the utility model uses is relatively low, realizes at lower cost wide
Range, high-precision temperature output analog circuit, avoid the high test convenient for new energy vehicle controller of testing cost and
Verification；With higher controllable temperature simulation context, temperature output area can reach -40 DEG C to 150 DEG C, and can pass through increase
Series resistance expands low temperature range, while has higher temperature output accuracy, and temperature output accuracy reaches 0.5 DEG C, Neng Goushi
Answer it is nearly all under the conditions of validation test for temperature sensor range requirement and accuracy requirement.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the circuit block diagram according to a kind of controllable temperature simulation output circuit described in the utility model embodiment；
Fig. 2 is the circuit theory according to a kind of controllable temperature simulation output circuit described in the utility model embodiment
Figure；
In figure：
1st, U1 microcontrollers；2nd, resistance value Acquisition Circuit；3rd, resistance value adjusts circuit；4th, automobile controller.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art's all other embodiments obtained all belong to
In the range of the utility model protection.
As shown in Figs. 1-2, a kind of controllable temperature simulation output circuit according to the utility model embodiment, including
U1 microcontrollers 1, the U1 microcontrollers 1 are connected separately with resistance value Acquisition Circuit 2 and resistance value adjusts circuit 3, the resistance value acquisition electricity
The left end that 2 left end of road and resistance value adjust circuit 3 is connect with automobile controller 4.
Further, the resistance value Acquisition Circuit 2 includes difference amplifier U2, the difference amplifier U2 connections current limiting
The left end of resistance R4, the right end of the current-limiting resistance R4 connect the upper end of capacitance C1 and U1 microcontrollers 1 respectively, the capacitance C1's
Lower end is grounded.
Further, the resistance value adjusts the right end connection that circuit 3 includes digital regulation resistance R1, the digital regulation resistance R1
The left end of digital regulation resistance R2, the right end of the digital regulation resistance R2 connect the left end of resistance R3 and a left side of analog switch S1 respectively
End, the right end of the resistance R3 and the right end of analog switch S1 are grounded, wherein, the digital regulation resistance R1, digital regulation resistance
R2 and analog switch S1 are connect with U1 microcontrollers 1.
Further, 2 left end of resistance value Acquisition Circuit and resistance value adjust the left end of circuit 3 by testing harness and vapour
Vehicle controller 4 connects.
In order to facilitate the above-mentioned technical proposal for understanding the utility model, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
When specifically used,
Change in resistance circuit described in the utility model includes 10K digital regulation resistance R1,100K digital regulation resistances R2,100K
Resistance R3, analog switch S1；Microcontroller sends out the resistance value that resistance as needed adjusts entire circuit；When required electricity
When hindering resistance value less than 10K, then the digital regulation resistance output for debugging 100K is 0, and utilize the resistance of analog switch short circuit 100K,
There was only the digital regulation resistance of 10K in circuit at this time；If desired resistance ranging from 10K-110K then adjusts 10K numbers jointly
Word potentiometer and 100K digital regulation resistances, and analog switch short circuit 100K resistance is controlled, it is adjusted using 100K digital regulation resistances
Substantially resistance value is accurately adjusted using 10K digital regulation resistances；If desired resistance ranging from 100K-210K, then switch
Analog switch makes 100K resistance be connected in circuit, and adjusts 10K digital regulation resistances and 100K digital regulation resistances jointly, and
And control analog switch short circuit 100K resistance, adjust substantially resistance value using 100K digital regulation resistances, using 10K digital regulation resistances into
Row is accurate to be adjusted.Ensure the range of output temperature signal, also realize the accuracy of temperature output.
The resistance value Acquisition Circuit includes difference amplifier U2, current-limiting resistance R4, filter capacitor C1, utilizes controller end
The resistance value being pulled in the 10K resistance and temperature output analog circuit of 3.3V is divided, by control source to difference amplifier,
Voltage follower circuit is formed using difference amplifier, ensures the stabilization of collection value with accurate, the voltage value of difference amplifier output
The filtering of current limliting and capacitance by resistance, input to monolithic remember acquire port, microcontroller to collected voltage value into
Row calculates, and can both calculate temperature simulation circuit reality output resistance value.
For the utility model since the precision of digital regulation resistance is relatively low, single adjusting may not can ensure temperature output simulation electricity
The correctness of resistance value in road, microcontroller calculate resistance value practical in temperature output artifical resistance, comparison according to the voltage value of acquisition
Output resistance is set, real figure potentiometer is finely adjusted, forms the Secondary Control of closed loop, ensures temperature output simulation
The accurate adjusting of circuit.
Comprising 256 verniers inside the digital regulation resistance R1 of 10K, minimum adjustable resistance value is 39R, 100K number current potentials
The resistance R3 of device R2 and 100K are used for the adjusting of temperature range, exportable ranging from -40 DEG C to 150 DEG C of the series connection of three resistance
Temperature range；Using the pull-up resistor inside automobile controller, temperature simulation circuit can acquire the voltage value of connector port,
Microcontroller is fed back to, microcontroller calculates the actual temperature value of this moment circuit output according to the voltage value of input, and according to deviation
It is adjusted, temperature accuracy can reach 0.5 DEG C；The temperature formed using the low digital regulation resistance of low precision, range exports simulation
Circuit can meet requirement of the automobile controller for temperature sensor under the conditions of various.
In conclusion the component cost that the utility model uses is relatively low, wide scope, high-precision is realized at lower cost
Temperature exports analog circuit, avoids the high test and validation convenient for new energy vehicle controller of testing cost；With higher
Controllable temperature simulation context, temperature output area can reach -40 DEG C to 150 DEG C, and can be expanded by increasing series resistance
Low temperature range, while there is higher temperature output accuracy, temperature output accuracy reaches 0.5 DEG C, can adapt to nearly all
Validation test is for the range requirement and accuracy requirement of temperature sensor under part.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of controllable temperature simulation output circuit, which is characterized in that including U1 microcontrollers（1）, the U1 microcontrollers（1）Point
It is not connected with resistance value Acquisition Circuit（2）Circuit is adjusted with resistance value（3）, the resistance value Acquisition Circuit（2）Left end and resistance value adjust electricity
Road（3）Left end and automobile controller（4）Connection.
A kind of 2. controllable temperature simulation output circuit according to claim 1, which is characterized in that the resistance value acquisition electricity
Road（2）Including difference amplifier U2, the difference amplifier U2 is connected with the left end of current-limiting resistance R4, the current-limiting resistance R4's
Right end connects the upper end of capacitance C1 and U1 microcontrollers respectively（1）, the lower end ground connection of the capacitance C1.
3. a kind of controllable temperature simulation output circuit according to claim 1, which is characterized in that the resistance value adjusts electricity
Road（3）Including digital regulation resistance R1, the left end of the right end connection digital regulation resistance R2 of the digital regulation resistance R1, the number electricity
The right end of position device R2 connects the left end of resistance R3 and the left end of analog switch S1, the right end and analog switch of the resistance R3 respectively
The right end of S1 is grounded, wherein, the digital regulation resistance R1, digital regulation resistance R2 and analog switch S1 with U1 microcontrollers（1）
Connection.
A kind of 4. controllable temperature simulation output circuit according to claim 1, which is characterized in that the resistance value acquisition electricity
Road（2）Left end and resistance value adjust circuit（3）Left end by testing harness and automobile controller（4）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721449623.2U CN207601618U (en) | 2017-11-03 | 2017-11-03 | A kind of controllable temperature simulation output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721449623.2U CN207601618U (en) | 2017-11-03 | 2017-11-03 | A kind of controllable temperature simulation output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601618U true CN207601618U (en) | 2018-07-10 |
Family
ID=62758021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721449623.2U Expired - Fee Related CN207601618U (en) | 2017-11-03 | 2017-11-03 | A kind of controllable temperature simulation output circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207601618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931954A (en) * | 2018-08-28 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | Temperature signals simulation output equipment |
| CN115639380A (en) * | 2022-12-23 | 2023-01-24 | 四川华丰科技股份有限公司 | Power simulator and simulation method |
-
2017
- 2017-11-03 CN CN201721449623.2U patent/CN207601618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931954A (en) * | 2018-08-28 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | Temperature signals simulation output equipment |
| CN115639380A (en) * | 2022-12-23 | 2023-01-24 | 四川华丰科技股份有限公司 | Power simulator and simulation method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20211103 |