CN103245509A - Circuit module for simulating automobile engine crankshaft signal - Google Patents
Circuit module for simulating automobile engine crankshaft signal Download PDFInfo
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- CN103245509A CN103245509A CN2013101888720A CN201310188872A CN103245509A CN 103245509 A CN103245509 A CN 103245509A CN 2013101888720 A CN2013101888720 A CN 2013101888720A CN 201310188872 A CN201310188872 A CN 201310188872A CN 103245509 A CN103245509 A CN 103245509A
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Abstract
The invention provides a circuit module for simulating automobile engine crankshaft signals, which comprises a single-chip microcomputer. Square wave signals output by the single-chip microcomputer are connected with the base of a triode through a first resistor. The emitter of the triode is grounded. The collector of the triode is connected with the positive input end of a voltage comparator through a fourth resistor. The output end of the voltage comparator is connected with the negative input end of an operation amplifier sequentially through a sixth resistor and a second capacitor. The positive input end of the operation amplifier is grounded. The output end of the operation amplifier outputs peaked wave signals through a receiving circuit. The circuit module for simulating automobile engine crankshaft signals provided by the invention has the advantages that the crankshaft position signals output during the operation of a real engine can be simulated by using the circuit module, the structure of the circuit module is simple, the cost is low, the operating difficulty is not great, the implementation is facilitated and the simulating accuracy of the signals is higher.
Description
Technical field
The invention belongs to vehicle electric field, be specifically related to a kind of circuit module of simulated automotive engine crankshaft signal.
Background technology
When carrying out engine control, control unit of engine need obtain the signal of crank position, in order to obtain the position of present engine bent axle, carry out the control of closed loop, and the relatively poor problem of simulation system ubiquity versatility of existing crankshaft signal in the prior art, the bent axle cam signal changes and changes along with engine model, the accuracy of simulating signal is not high, and the complex structure of whole simulation system, cost is higher, simulation process is loaded down with trivial details simultaneously, and the implementation process difficulty is bigger, and operation is also inconvenient.
Summary of the invention
Technical matters to be solved by this invention provides a kind of circuit module of simulated automotive engine crankshaft signal, the crankshaft-position signal of output when utilizing this breadboardin actual engine operation, this circuit module is simple in structure simultaneously, cost is low, operation easier is not high, be convenient to implement, the accuracy of simulating signal is higher simultaneously.
The invention provides a kind of circuit module of simulated automotive engine crankshaft signal, comprise single-chip microcomputer, this single-chip microcomputer output terminal connects the base stage of triode by first resistance, and the contact between the base stage of first resistance and triode is also by second resistance eutral grounding, the collector of described triode connects first external power supply by the 3rd resistance, the grounded emitter of described triode, the collector of described triode connects the positive input of voltage comparator by the 4th resistance, the negative input of voltage comparator connects second external power supply by the 5th resistance, the negative input of this voltage comparator is also by the 6th resistance eutral grounding, and the negative input of this voltage comparator is also by first capacity earth; The electrode positive input of described voltage comparator, the electrode negative input respectively with the 3rd external power supply, the connects power supply all round connects, the output terminal of described voltage comparator is in turn by the tenth resistance, second electric capacity is connected with the negative input of operational amplifier, the positive input of this operational amplifier is by the 8th resistance eutral grounding, the positive electrode input end of described operational amplifier, the negative electrode input end respectively with the 5th external power supply, the 6th external power supply connects, the output terminal of described operational amplifier connects receiving circuit by the 9th resistance, the contact that is connected between described the 9th resistance and the receiving circuit is also by the 4th capacity earth, and the negative input of described operational amplifier is by the 7th resistance in parallel, the 3rd electric capacity is connected with the output terminal of this operational amplifier.
Further, the two ends of described second resistance also are parallel with the 5th electric capacity.
Further, the output terminal of described voltage comparator is connected the 7th external power supply with contact between the tenth resistance by the 11 resistance.
Further, described receiving circuit is the engine crankshaft position testing circuit.
The advantage that the present invention has:
The invention provides a kind of circuit module of simulated automotive engine crankshaft signal, the crankshaft-position signal of output when utilizing this breadboardin actual engine operation, this circuit module is simple in structure simultaneously, cost is low, operation easier is not high, is convenient to implement, and the accuracy of simulating signal is higher simultaneously.
Description of drawings
Fig. 1 is the structural representation of the circuit module of simulated automotive engine crankshaft signal provided by the invention.
Among the figure: the 1-single-chip microcomputer; 2-first resistance; 3-second resistance; 4-the 5th electric capacity; 5-first external power supply; The 6-triode; 7-the 3rd resistance; 8-the 5th resistance; 9-the 4th resistance; 10-second external power supply; 11-the 3rd external power supply; 12-the 6th resistance; 13-first electric capacity; 14-the 11 resistance; 15-the tenth resistance; 16-second electric capacity; 17-the 7th external power supply; 18-the 6th external power supply; 19-the 3rd electric capacity; 20-the 7th resistance; The 21-operational amplifier; 22-the 8th resistance; 23-the 9th resistance; 24-the 4th electric capacity; 25-the 5th external power supply; The 26-receiving circuit; The 27-voltage comparator; 28-connects power supply all round.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
The invention provides a kind of circuit module of simulated automotive engine crankshaft signal, as shown in Figure 1, comprise single-chip microcomputer 1, the square-wave signal of this single-chip microcomputer 1 output inserts in the base stage of triode 6 by first resistance 2 (being preferably 10k Ω), and the contact between the base stage of first resistance 2 and triode 6 is also by second resistance 3 (being preferably 4.7k Ω) ground connection, and the two ends of described second resistance 3 also are parallel with the 5th electric capacity 4 (being preferably 1nF).The collector of this triode 6 connects first external power supply 5 (5V power supply) by the 3rd resistance 7, the grounded emitter of this triode 6, and the collector of this triode 6 also connects the positive input (In+ end) of voltage comparator 27 by the 4th resistance 9, and the negative input of voltage comparator 27 (In-end) is respectively by the 5th resistance 8 (being preferably 10k Ω), the 6th resistance 12 (being preferably 1k Ω) connects second external power supply 10 (being preferably the 5V power supply), the contact that is connected between the ground connection, the negative input of described voltage comparator 27 (In-end) and the 6th resistance 12 also (is preferably 10nF (namely 10 * 10 by first electric capacity 13
-9The Ferrari)) ground connection.The electrode positive input of described voltage comparator 27, the electrode negative input respectively with the 3rd external power supply 11 (being preferably the 10V power supply), connects power supply 28 (being preferably-the 10V power supply) all round is connected, the output terminal of described voltage comparator 27 (Out end) is in turn by the tenth resistance 15 (being preferably 1k Ω), second electric capacity 16 (being preferably 10nF) is connected with the negative input (In-end) of operational amplifier 21, the positive input of this operational amplifier 21 (In+ end) is by the 8th resistance 22 (being preferably 1k Ω) ground connection, the positive electrode input end of described operational amplifier 21, the negative electrode input end respectively with the 5th external power supply 25 (being preferably the 10V power supply), the 6th external power supply 18 (being preferably-the 10V power supply) is connected.The output terminal of described operational amplifier 21 connects receiving circuit 26 by the 9th resistance 23 (being preferably 1k Ω), receives back output peaked wave signal by receiving circuit 26.The contact that is connected between described the 9th resistance 23 and the receiving circuit 26 is also by the 4th electric capacity 24 (being preferably 47nF) ground connection.Be connected by the 7th resistance 20 (being preferably 1k Ω), the 3rd electric capacity 19 (being preferably 1.2nF) in parallel between the negative input of described operational amplifier 21 (In-end) and the output terminal (Out end).The output terminal of described voltage comparator 27 is connected the 7th external power supply 17 (being preferably the 12V power supply) with contact between the 6th resistance 15 by the 11 resistance 14 (being preferably 1k Ω).
The model of described voltage comparator 27 is preferably NCV2903, and the model of described operational amplifier 21 is preferably NCV2904.Described receiving circuit 26 is for transforming and export the engine crankshaft position testing circuit of peaked wave signal by the reception square wave.PWM square wave by single-chip microcomputer 1 output duty cycle 50%, enter circuit module provided by the invention the square wave load module input port and output after, through the logic negate, and amplify output by computing and improve drive current, and after the degenerative computing of electric capacity square wave is transformed to peaked wave through voltage ratio, makes waveform consistent with the engine crankshaft position signal.Circuit module provided by the invention can the real engine crankshaft position signal of analogue simulation, as the bent axle output signal on the testing apparatus.
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (4)
1. the circuit module of a simulated automotive engine crankshaft signal, it is characterized in that, comprise single-chip microcomputer, this single-chip microcomputer output terminal connects the base stage of triode by first resistance, and the contact between the base stage of first resistance and triode is also by second resistance eutral grounding, the collector of described triode connects first external power supply by the 3rd resistance, the grounded emitter of described triode, the collector of described triode connects the positive input of voltage comparator by the 4th resistance, the negative input of voltage comparator connects second external power supply by the 5th resistance, the negative input of this voltage comparator is also by the 6th resistance eutral grounding, and the negative input of this voltage comparator is also by first capacity earth; The electrode positive input of described voltage comparator, the electrode negative input respectively with the 3rd external power supply, the connects power supply all round connects, the output terminal of described voltage comparator is in turn by the tenth resistance, second electric capacity is connected with the negative input of operational amplifier, the positive input of this operational amplifier is by the 8th resistance eutral grounding, the positive electrode input end of described operational amplifier, the negative electrode input end respectively with the 5th external power supply, the 6th external power supply connects, the output terminal of described operational amplifier connects receiving circuit by the 9th resistance, the contact that is connected between described the 9th resistance and the receiving circuit is also by the 4th capacity earth, and the negative input of described operational amplifier is by the 7th resistance in parallel, the 3rd electric capacity is connected with the output terminal of this operational amplifier.
2. the circuit module of simulated automotive engine crankshaft signal according to claim 1 is characterized in that, the two ends of described second resistance also are parallel with the 5th electric capacity.
3. the circuit module of simulated automotive engine crankshaft signal according to claim 2 is characterized in that, the output terminal of described voltage comparator is connected the 7th external power supply with contact between the tenth resistance by the 11 resistance.
4. the circuit module of simulated automotive engine crankshaft signal according to claim 3 is characterized in that, described receiving circuit is the engine crankshaft position testing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101888720A CN103245509A (en) | 2013-05-21 | 2013-05-21 | Circuit module for simulating automobile engine crankshaft signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101888720A CN103245509A (en) | 2013-05-21 | 2013-05-21 | Circuit module for simulating automobile engine crankshaft signal |
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| CN103245509A true CN103245509A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101888720A Pending CN103245509A (en) | 2013-05-21 | 2013-05-21 | Circuit module for simulating automobile engine crankshaft signal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203044U (en) * | 1986-06-06 | 1987-10-03 | 上海铁道学院 | Signal simulator for internal-combustion engine |
| US20080027619A1 (en) * | 2004-06-16 | 2008-01-31 | Siemens Aktiengesellschaft | Crankshaft-Synchronous Detection of Analog Signals |
| US20090005216A1 (en) * | 2007-06-29 | 2009-01-01 | Gm Global Technology Operations, Inc. | Methods and systems to feedback coordinated torque control system information |
-
2013
- 2013-05-21 CN CN2013101888720A patent/CN103245509A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203044U (en) * | 1986-06-06 | 1987-10-03 | 上海铁道学院 | Signal simulator for internal-combustion engine |
| US20080027619A1 (en) * | 2004-06-16 | 2008-01-31 | Siemens Aktiengesellschaft | Crankshaft-Synchronous Detection of Analog Signals |
| US20090005216A1 (en) * | 2007-06-29 | 2009-01-01 | Gm Global Technology Operations, Inc. | Methods and systems to feedback coordinated torque control system information |
Non-Patent Citations (2)
| Title |
|---|
| 严伟: "传感器信号模拟电路设计研究", 《中国优秀博硕士学位论文数据库(硕士)信息科辑》, no. 06, 15 June 2007 (2007-06-15), pages 50 - 51 * |
| 王宇明 等: "便携式发动机工况信号模拟器的设计与开发", 《内燃机工程》, vol. 27, no. 6, 31 December 2006 (2006-12-31) * |
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Application publication date: 20130814 |