CN203616422U - Input signal state detecting device and electric automobile provided with same - Google Patents
Input signal state detecting device and electric automobile provided with same Download PDFInfo
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- CN203616422U CN203616422U CN201320703629.3U CN201320703629U CN203616422U CN 203616422 U CN203616422 U CN 203616422U CN 201320703629 U CN201320703629 U CN 201320703629U CN 203616422 U CN203616422 U CN 203616422U
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Abstract
The utility model discloses an input signal state detecting device, which comprises a switching group, a first resistor, a second resistor, a voltage divider and a controller, wherein the switching group is provided with an input end, a first output end and a second output end, and input signals are inputted through the input end; one end of the first resistor is connected with the first output end; one end of the second resistor is connected with the second output end, the resistance of the second resistor is greater than the resistance of the first resistor; the input end of the voltage divider is connected with the other end of the first resistor and the other end of the second resistor; and the controller is provided with an A/D conversion module, the A/D conversion module is connected with the output end of the voltage divider, and the controller judges the state of the input signals according to a value read from the A/D conversion module. The input signal state detecting device can judge the state of the input signals accurately. The utility model further discloses an electric automobile.
Description
Technical field
The utility model relates to electric vehicle engineering field, particularly the electric automobile of a kind of condition checkout gear of input signal and a kind of condition checkout gear with this input signal.
Background technology
Electric-controlled parts in electric automobile, need to gather some signals conventionally, after these signals are judged, sends corresponding steering order.For example entire car controller, it gathers after the miscellaneous part signals such as gear signal, accelerator pedal signal, brake pedal signal, make corresponding judgement, to control the action of each controller of lower floor, coordinate function conversion and energy distribution between electric machine control system, battery management system, charge control system, DC-DC, brake system.Therefore, for accurate collection and the judgement of the state of these input signals, be, very important to the control of electric automobile.
In correlation technique, digital input signal, the high and low level state of common attention signal, does not have out of order judgement.And outside digital input signals does not provide a kind of reasonable manner yet, makes controller can detect easily the state of signal.
Utility model content
The application is inventor based on following understanding and discovery:
In correlation technique, the low and high level state of digital quantity input signal normally two states of switch is closed and turn-offs generation.Whether controller can only be distinguished the low and high level state of input signal, can not judge that input signal is current to break down and the type of fault.Take the effective input signal of height as example, in the time that input signal is shorted to ground, the state turn-offing with switch is the same, and in the time that input signal is shorted to power supply, the same with the state of switch closure, therefore controller cannot be distinguished.
The purpose of this utility model is intended at least solve above-mentioned technological deficiency.
For this reason, the purpose of this utility model is to propose a kind of condition checkout gear of input signal, can accurately judge the state of input signal, thereby can judge, whether input signal is current breaks down and the type of fault.
For achieving the above object, the condition checkout gear of a kind of input signal the utility model proposes, comprising: switches set, and described switches set has input end, the first output terminal and the second output terminal, and wherein, described input signal is inputted by described input end; The first resistance, one end of described the first resistance is connected with described the first output terminal; The second resistance, one end of described the second resistance is connected with described the second output terminal, and wherein, the resistance of described the second resistance is greater than the resistance of described the first resistance; Voltage divider, the input end of described voltage divider is connected with the other end of described the second resistance with the other end of described the first resistance respectively; And controller, described controller has A/D modular converter, and described A/D modular converter is connected with the output terminal of described voltage divider, and described controller judges the state of described input signal according to the value reading from described A/D modular converter.
According to the condition checkout gear of the input signal the utility model proposes, controller judges the state of input signal according to the value reading from A/D modular converter, except accurately distinguishing the high and low level state of input signal, can also accurately judge whether input signal is current breaks down and the type of fault, thereby can take appropriate measures in time handling failure, reliability and security have obtained improving greatly.
Wherein, described voltage divider comprises: the 3rd resistance, and one end of described the 3rd resistance is connected with the other end of described the second resistance with the other end of described the first resistance respectively; The 4th resistance, one end of described the 4th resistance is connected with the other end of described the 3rd resistance, the other end ground connection of described the 4th resistance, the output terminal that the node between described the 3rd resistance and the 4th resistance is described voltage divider.
And the condition checkout gear of described input signal also comprises: the 5th resistance, one end of described the 5th resistance is connected with the other end of described the second resistance with the other end of described the first resistance respectively, the other end ground connection of described the 5th resistance.
Preferably, described controller is microcontroller.
In addition, the utility model has also proposed a kind of electric automobile, and this electric automobile comprises the condition checkout gear of above-mentioned input signal.Like this, electric-controlled parts in this electric automobile is except accurately distinguishing the high and low level state of input signal, can also accurately judge whether input signal is current breaks down and the type of fault, thereby can take appropriate measures in time handling failure, the reliability and the security that have greatly improved electric automobile.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
The utility model above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is according to the circuit diagram of the condition checkout gear of the input signal of the utility model embodiment; And
Fig. 2 is the corresponding schematic diagram of state with input signal according to AD value that in the condition checkout gear of the input signal of an embodiment of the utility model, AD modular converter detects.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
The condition checkout gear of the input signal proposing according to the utility model embodiment is described with reference to the accompanying drawings.
Fig. 1 is according to the circuit diagram of the condition checkout gear of the input signal of the utility model embodiment.As shown in Figure 1, the condition checkout gear of this input signal comprises switches set 10, the first resistance R 1, the second resistance R 2, voltage divider 20 and controller 30.
Wherein, switches set 10 has input end 1, the first output terminal 2 and the second output terminal 3, and input signal inputs by input end 1, and the effective input signal of height for example with 12V level is inputted by input end 1.
As shown in Figure 1, one end of the first resistance R 1 is connected with the first output terminal 2, and one end of the second resistance R 2 is connected with the second output terminal 3, and wherein, the resistance of the second resistance R 2 is greater than the resistance of the first resistance R 1.Like this, in the time that input end 1 and the first input end 2 of switches set 10 are connected, input signal is in effective status, the first resistance R 1 place in circuit; In the time that the input end 1 of switches set 10 and the second input end 3 are connected, input signal is in disarmed state, the second resistance R 2 places in circuit.In an embodiment of the present utility model, the first resistance R 1 and the second resistance R 2 can be integrated into entirety with switches set 10, in the time that the input end 1 of switches set 10 is connected with first input end 2, the impedance that switch is corresponding is R1, when the input end 1 of switches set 10 and the second input end 3 are connected, the impedance that switch is corresponding is R2, and the resistance of R2 is much larger than the resistance of R1.
The input end of voltage divider 20 is that node A is connected with the other end of the second resistance R 2 with the other end of the first resistance R 1 respectively, controller 30 has A/D modular converter 301, A/D modular converter 301 is that Node B is connected with the output terminal of voltage divider 20, and controller 301 judges the state of input signal according to the value reading from A/D modular converter 301.
In an embodiment of the present utility model, as shown in Figure 1, voltage divider 20 comprises the 3rd resistance R 3 and the 4th resistance R 4.Wherein, one end of the 3rd resistance R 3 is connected with the other end of the second resistance R 2 with the other end of the first resistance R 1 respectively, one end of the 4th resistance R 4 is connected with the other end of the 3rd resistance R 3, the other end ground connection of the 4th resistance R 4, the Node B between the 3rd resistance R 3 and the 4th resistance R 4 is the output terminal of voltage divider 20.I.e. speech, the voltage that A is ordered is for example converted into a 5V and is input to A/D modular converter 301 with interior voltage signal and gathers for controller 30 after the 3rd resistance R 3 and the 4th resistance R 4 dividing potential drops.
And as shown in Figure 1, the condition checkout gear of above-mentioned input signal also comprises that one end of the 5th resistance R 5, the five resistance R 5 is connected with the other end of the second resistance R 2 with the other end of the first resistance R 1 respectively, the other end ground connection of the 5th resistance R 5.Wherein, the 5th resistance R 5 is pull down resistor.
In an example of the present utility model, controller 30 can be microcontroller.
Conventionally,, for a digital input signals, often there is different states: signal effectively, invalidating signal, signal shorts be to power supply, signal shorts to ground etc.Gather for example 12V high level of high effectively input signal take controller 30 below and the condition checkout gear of the input signal that the utility model embodiment proposes is described as example.
When input signal is during in effective status, because the resistance of R1 is relatively little, now A point can record one close to 12V, but is less than the voltage of 12V; When input signal is during in disarmed state, because the resistance of R2 is relatively large, now A point can record one close to 0V, but is greater than the voltage of 0V; When the signal that is input to controller, for example A point signal directly and when power supply short circuit, now A point voltage is 12V, is greater than the input signal voltage that A is ordered in the time of effective status; When be input to the signal of controller be A point signal directly and when earth short, now A point voltage is 0V, is less than the input signal voltage that A is ordered in the time of disarmed state.
Wherein, the I/O interface of for example MCU of controller 30 has certain limitation for the judgement of input signal low and high level state.MCU inputs the maximum voltage of I/O mouth can identify low level time, general value is that 0.3*Vdd(Vdd is the logic supply voltage of MCU), and MCU inputs the minimum voltage of I/O mouth can identify high level time, and general value is 0.7*Vdd.
Like this, the voltage of ordering due to input signal A when the effective status and the signal that is input to controller directly and when power supply short circuit A point voltage all close to 12V, the input signal voltage that A is ordered in the time of disarmed state and the signal that is input to controller directly and when earth short A point voltage all close to 0V, carrying out processing signals with the I/O of MCU, is the fault that can not judge input signal.
And the utility model is that the A/D modular converter of the signal access MCU after dividing potential drop is gathered, AD the value corresponding voltage under different conditions is read out accurately.Wherein, due to the existence of resistance error, the voltage under the four kinds of states of signal after dividing potential drop is a scope, specifically as shown in Figure 2.In the time of actual treatment, in the program of MCU, the AD value scope to the signal after dividing potential drop under four kinds of states defines in advance, after reading the AD value of the signal after dividing potential drop, compares with the AD value setting, by the residing scope of AD value now, can judge the current state of input signal.
The condition checkout gear of the input signal proposing according to the utility model embodiment, controller judges the state of input signal according to the value reading from A/D modular converter, except accurately distinguishing the high and low level state of input signal, can also accurately judge whether input signal is current breaks down and the type of fault, thereby can take appropriate measures in time handling failure, reliability and security have obtained improving greatly.
In addition, embodiment of the present utility model has also proposed a kind of electric automobile, and this electric automobile comprises the condition checkout gear of above-mentioned input signal.Like this, electric-controlled parts in this electric automobile is except accurately distinguishing the high and low level state of input signal, can also accurately judge whether input signal is current breaks down and the type of fault, thereby can take appropriate measures in time handling failure, the reliability and the security that have greatly improved electric automobile.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is by claims and be equal to and limit.
Claims (5)
1. a condition checkout gear for input signal, is characterized in that, comprising:
Switches set, described switches set has input end, the first output terminal and the second output terminal, and wherein, described input signal is inputted by described input end;
The first resistance, one end of described the first resistance is connected with described the first output terminal;
The second resistance, one end of described the second resistance is connected with described the second output terminal, and wherein, the resistance of described the second resistance is greater than the resistance of described the first resistance;
Voltage divider, the input end of described voltage divider is connected with the other end of described the second resistance with the other end of described the first resistance respectively; And
Controller, described controller has A/D modular converter, and described A/D modular converter is connected with the output terminal of described voltage divider, and described controller judges the state of described input signal according to the value reading from described A/D modular converter.
2. the condition checkout gear of input signal as claimed in claim 1, is characterized in that, described voltage divider comprises:
The 3rd resistance, one end of described the 3rd resistance is connected with the other end of described the second resistance with the other end of described the first resistance respectively;
The 4th resistance, one end of described the 4th resistance is connected with the other end of described the 3rd resistance, the other end ground connection of described the 4th resistance, the output terminal that the node between described the 3rd resistance and the 4th resistance is described voltage divider.
3. the condition checkout gear of input signal as claimed in claim 2, is characterized in that, also comprises:
The 5th resistance, one end of described the 5th resistance is connected with the other end of described the second resistance with the other end of described the first resistance respectively, the other end ground connection of described the 5th resistance.
4. the condition checkout gear of the input signal as described in any one in claim 1-3, is characterized in that, described controller is microcontroller.
5. an electric automobile, is characterized in that, comprises the condition checkout gear of the input signal as described in any one in claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320703629.3U CN203616422U (en) | 2013-11-07 | 2013-11-07 | Input signal state detecting device and electric automobile provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320703629.3U CN203616422U (en) | 2013-11-07 | 2013-11-07 | Input signal state detecting device and electric automobile provided with same |
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| CN203616422U true CN203616422U (en) | 2014-05-28 |
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| CN201320703629.3U Expired - Fee Related CN203616422U (en) | 2013-11-07 | 2013-11-07 | Input signal state detecting device and electric automobile provided with same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291874A (en) * | 2015-10-28 | 2016-02-03 | 北京新能源汽车股份有限公司 | Vehicle control unit, signal processing method and signal processing device thereof |
| WO2017198140A1 (en) * | 2016-05-19 | 2017-11-23 | 北京全路通信信号研究设计院集团有限公司 | Condition information acquisition circuit and method for fault guiding security |
| CN112977297A (en) * | 2019-12-13 | 2021-06-18 | 北汽福田汽车股份有限公司 | Signal acquisition circuit, control method, vehicle control unit and vehicle |
-
2013
- 2013-11-07 CN CN201320703629.3U patent/CN203616422U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291874A (en) * | 2015-10-28 | 2016-02-03 | 北京新能源汽车股份有限公司 | Vehicle control unit, signal processing method and signal processing device thereof |
| CN105291874B (en) * | 2015-10-28 | 2018-06-12 | 北京新能源汽车股份有限公司 | Vehicle control unit, signal processing method and signal processing device thereof |
| WO2017198140A1 (en) * | 2016-05-19 | 2017-11-23 | 北京全路通信信号研究设计院集团有限公司 | Condition information acquisition circuit and method for fault guiding security |
| EA037824B1 (en) * | 2016-05-19 | 2021-05-25 | СиАрЭсСи РИСЕРЧ ЭНД ДИЗАЙН ИНСТИТЬЮТ ГРУП КО., ЛТД. | Condition information acquisition circuit and method for fault guiding security |
| CN112977297A (en) * | 2019-12-13 | 2021-06-18 | 北汽福田汽车股份有限公司 | Signal acquisition circuit, control method, vehicle control unit and vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180424 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
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| 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: 20140528 Termination date: 20211107 |