CN103359106A - New-energy hybrid electric vehicle controller and analog signal output method thereof - Google Patents
New-energy hybrid electric vehicle controller and analog signal output method thereof Download PDFInfo
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- CN103359106A CN103359106A CN2012100870937A CN201210087093A CN103359106A CN 103359106 A CN103359106 A CN 103359106A CN 2012100870937 A CN2012100870937 A CN 2012100870937A CN 201210087093 A CN201210087093 A CN 201210087093A CN 103359106 A CN103359106 A CN 103359106A
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Abstract
The invention provides a new-energy hybrid electric vehicle controller integrated with an analog signal output function and an analog signal output method thereof. The vehicle controller comprises a host processor, a D/A (digital to analog) switching circuit, a signal amplification circuit and an output protection circuit. The host processor is used for processing digital signals inputted into the host processor according to a control algorithm to generate a required value of engine power output, wherein the digital signals are obtained through signal conversion of analog signals acquired by an accelerator pedal position sensor and transmitted to an A/D (analog to digital) switching circuit in the vehicle controller by an analog input pin of the vehicle controller. The D/A switching circuit is used for receiving the required value of the engine power output and converting the required value into the analog signals. The signal amplification circuit is used for receiving the analog signals generated from the D/A switching circuit for signal amplification. The output protection circuit is used for receiving the amplified analog signals and outputting the same to an engine controller via the vehicle controller analog output pin connected with an analog acquisition pin of the engine controller.
Description
Technical field
The present invention relates to the controller of new energy automobile technical field, particularly, is new forms of energy whole car controller of hybrid electric car and a kind of new forms of energy whole car controller of hybrid electric car analog signal output method that is integrated with the analog signal output function.
Background technology
Under the vigorously supporting of national policy, new-energy automobile is flourish in China, has obtained important breakthrough, and as the maincenter of new-energy automobile vehicle electronics control net system, entire car controller is the core component of electric-control system.The radical function of entire car controller comprises: gather acceleration pedal signal and other sensor signal, make corresponding judgement after, control each actr action, the driving automobile normal running.The acceleration pedal signal is a kind of analog signal, the conventional truck power system is to provide vehicle power by driving engine, collection for the acceleration pedal signal, the main driving intention of chaufeur is that the acceleration pedal signal directly gathers (See Figure 1) by the EMS engine controller, and the new-energy automobile hybrid power system is by motor and common cooperation of driving engine providing vehicle power, the acceleration pedal signal is gathered by entire car controller, obtain the power output valve that motor and driving engine need separately after the process control algorithm calculation process, and inform the value of electric machine controller and the current needs of engine controller by certain way.Usually electric machine controller obtains the power output valve that needs by the CAN bus signals, and engine controller obtains the power output valve that needs by analog signals.
Because the new-energy automobile of exploitation adopts driving engine and the engine controller the same with conventional truck at present, and engine electric-controlled system is almost monopolized by foreign vendor, because new-energy automobile output is lower, foreign vendor is reluctant to change engine controller for Chinese market for new-energy automobile, the scheme of the change engine controller that the automatically controlled manufacturer of minority proposes will be paid huge expense easily, and domestic automobile manufacturer is difficult to bear.Under these circumstances, make entire car controller directly pass through the CAN bus communication with engine controller, the power demand value that entire car controller calculates can't be sent to engine controller by the CAN bus.The developer of mixed moving entire car controller is for addressing this problem, traditional approach adopts external CAN to turn the interconnecting device of analog signals usually, utilize the CAN communication function of entire car controller, the CAN message that entire car controller is sent by interconnecting device converts analog signal output to engine controller (See Figure 2).
Owing to need to be responsible for transmitting this signal of interest with outside interconnecting device independently, this mode greatly reduces integrated level and the reliability of product, and cause the whole-control system poor anti-interference, outside interconnecting device also is difficult to accomplish the water proof and dust proof requirement of vehicle control system, damage easily, Frequent Troubles makes automobile storage in great safety and reliability hidden danger.Simultaneously, outside interconnecting device has also additionally increased the complexity of system, causes exploitation and productive costs to improve.
Summary of the invention
The objective of the invention is by realizing the analog output function in new forms of energy whole car controller of hybrid electric car inside, the form of directly entire car controller being exported with analog signals the power output requirements of driving engine, directly send to engine controller by rigid line, because the internal bus controller communication speed is high, anti-interference resistance is good, and need not external connection module, integrated level is higher, barrier propterty to water, dust, salt fog etc. is better, reduce the complexity that external component has reduced system, greatly improve vehicle safety and reliability.
Embodiment of the invention first aspect has proposed a kind of new forms of energy whole car controller of hybrid electric car that is integrated with the analog signal output function, comprise: primary processor, be used for according to control algorithm the digital quantity signal that is input to wherein being processed, generating engine power output requirements, the analog signals that wherein said digital quantity signal accelerator pedal position sensor collects is sent to the inner A/D change-over circuit of car load control and carries out the signal conversion via the analog input pin of entire car controller and obtains; The D/A change-over circuit is used for receiving above-mentioned engine power output requirements, is converted into analog signals; Signal amplification circuit is used for receiving the analog signals that above-mentioned D/A change-over circuit produces and carries out signal and amplify; And output protection circuit, be used for receiving the above-mentioned analog signals that is exaggerated, via the entire car controller analog output pin that is connected with engine controller analog acquisition pin the analog signals that is exaggerated is exported to engine controller.
Preferably, the analog signals that is exported to engine controller is the analog signals of 0～10V.
Preferably, entire car controller further comprises signal conditioning circuit, power driving circuit, communication circuit, electric power management circuit, metal case, water proof and dust proof connector.
According to a further aspect in the invention, a kind of new forms of energy whole car controller of hybrid electric car analog signal output method is provided, comprise: primary processor is processed the digital quantity signal that is input to wherein according to control algorithm, generating engine power output requirements, the analog signals that wherein said digital quantity signal accelerator pedal position sensor collects is sent to the inner A/D change-over circuit of car load control and carries out the signal conversion via the analog input pin of entire car controller and obtains; The D/A change-over circuit receives above-mentioned engine power output requirements, is converted into analog signals; Signal amplification circuit receives the analog signals that above-mentioned D/A change-over circuit produces and carries out signal and amplify; And the above-mentioned analog signals that is exaggerated of output protection circuit reception, via the entire car controller analog output pin that is connected with engine controller analog acquisition pin the analog signals that is exaggerated is exported to engine controller.
The aspect that the present invention adds and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 shows orthodox car entire car controller acquisition of signal and processes block diagram;
Fig. 2 shows the orthodox car entire car controller via the block diagram of interconnecting device transportation simulator amount signal to engine controller; And
Fig. 3 shows the signal processing block diagram that is integrated with the vehicle complete vehicle controller of analog output function according to the embodiment of the invention.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
According to the embodiment of the invention, provide a kind of controller of new energy automobile with analog output.Described entire car controller comprises primary processor, and signal conditioning circuit, power driving circuit, communication circuit, electric power management circuit and analogue quantity output circuit are except this also comprises the necessary annexes such as metal case, water proof and dust proof connector.
Analogue quantity output circuit is integrated into controller of new energy automobile inside, and external power supply provides 9～32V voltage, and analogue quantity output circuit provides the analog output of two-way 0～10V.Preferably, described analogue quantity output circuit comprises: D/A change-over circuit, signal amplification circuit and output protection circuit.
When the chaufeur step on the accelerator; accelerator pedal position sensor sends to analog signals the analog input pin of entire car controller; carry out the signal conversion by inner A/D change-over circuit; then the signal that is converted enters primary processor; primary processor is processed above-mentioned signal according to the control algorithm of inside programming; computing is obtained engine power output requirements output to the D/A change-over circuit via internal bus controller; in order to the engine power output requirements of digital signal type is converted to analog signal; then carry out analog signal via signal amplification circuit and amplify, this analog signal is sent to the signal protection circuit.Output protection circuit links to each other with entire car controller simulation output pin.Directly link to each other with the analog acquisition pin of engine controller by the analog output pin with entire car controller, realized that engine power output requirements is delivered to the purpose of engine controller by entire car controller.
Preferably, accelerator pedal position sensor sends to the analog signals of 0～5V the analog input pin of entire car controller.By inner A/D change-over circuit, described analog input signal becomes digital signal, and then transmission enters primary processor.Primary processor is according to the control algorithm of inside programming, and the engine power that computing obtains is exported requirements.Via internal bus controller engine power is exported requirements and output to the D/A change-over circuit, the D/A change-over circuit is converted to digital signal the analog signals of 0～5V.Because the output analog quantity need to cover 0～5V gamut, by signal amplification circuit signal is enlarged into the analog signals of 0～10V, links to each other with entire car controller analog output pin by output protection circuit afterwards.Output protection mainly is to puncture circuit for preventing because misoperation or other extraordinary circumstances cause foreign current.Directly link to each other with the analog acquisition pin of engine controller by the analog output pin with entire car controller like this, realized that engine power output requirements is delivered to the purpose of engine controller by entire car controller.
Below show the entire car controller main performance index
According to the embodiment of the invention, the new forms of energy whole car controller of hybrid electric car of described integrated simulation amount output and the analog signal output method of new forms of energy whole car controller of hybrid electric car have the following advantages: Integration Design, and reliability is higher; Barrier propterty and noise immunity are better; Signal transmission rate is higher; Easy-to-connect is easy to use; Cost is lower; Be fit to the stages such as laboratory, stand, entrucking.
In the description of this specification sheets, 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 invention or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (4)
1. new forms of energy whole car controller of hybrid electric car that is integrated with the analog signal output function comprises:
Primary processor, be used for according to control algorithm the digital quantity signal that is input to wherein being processed, generating engine power output requirements, the analog signals that wherein said digital quantity signal accelerator pedal position sensor collects is sent to the inner A/D change-over circuit of car load control and carries out the signal conversion via the analog input pin of entire car controller and obtains;
The D/A change-over circuit is used for receiving above-mentioned engine power output requirements, is converted into analog signals;
Signal amplification circuit is used for receiving the analog signals that above-mentioned D/A change-over circuit produces and carries out signal and amplify; And
Output protection circuit is used for receiving the above-mentioned analog signals that is exaggerated, and via the entire car controller analog output pin that is connected with engine controller analog acquisition pin the analog signals that is exaggerated is exported to engine controller.
2. entire car controller claimed in claim 1, the analog signals that wherein is exported to engine controller is the analog signals of 0～10V.
3. entire car controller as claimed in claim 1 further comprises signal conditioning circuit, power driving circuit, communication circuit, electric power management circuit, metal case, water proof and dust proof connector.
4. new forms of energy whole car controller of hybrid electric car analog signal output method, comprise: primary processor is processed the digital quantity signal that is input to wherein according to control algorithm, generating engine power output requirements, the analog signals that wherein said digital quantity signal accelerator pedal position sensor collects is sent to the inner A/D change-over circuit of car load control and carries out the signal conversion via the analog input pin of entire car controller and obtains; The D/A change-over circuit receives above-mentioned engine power output requirements, is converted into analog signals; Signal amplification circuit receives the analog signals that above-mentioned D/A change-over circuit produces and carries out signal and amplify; And the above-mentioned analog signals that is exaggerated of output protection circuit reception, via the entire car controller analog output pin that is connected with engine controller analog acquisition pin the analog signals that is exaggerated is exported to engine controller.
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Cited By (3)
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| CN104802790A (en) * | 2015-05-21 | 2015-07-29 | 北京九州华海科技有限公司 | New-energy entire car controller integrated with transmission case control function |
| CN105644389A (en) * | 2014-11-12 | 2016-06-08 | 海马轿车有限公司 | Redundancy control method and system of vehicle |
| CN109209653A (en) * | 2018-08-28 | 2019-01-15 | 开沃新能源汽车集团有限公司 | It is a kind of to realize that CAN data are converted into the gas pedal control method of analog data based on gateway and D/A module |
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| CN109209653A (en) * | 2018-08-28 | 2019-01-15 | 开沃新能源汽车集团有限公司 | It is a kind of to realize that CAN data are converted into the gas pedal control method of analog data based on gateway and D/A module |
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