CN105094115A - Sensor output circuit for simulation vehicle - Google Patents
Sensor output circuit for simulation vehicle Download PDFInfo
- Publication number
- CN105094115A CN105094115A CN201510365355.5A CN201510365355A CN105094115A CN 105094115 A CN105094115 A CN 105094115A CN 201510365355 A CN201510365355 A CN 201510365355A CN 105094115 A CN105094115 A CN 105094115A
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- circuit
- pwm
- electric capacity
- output circuit
- voltage signal
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- 238000004088 simulation Methods 0.000 title claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000006641 stabilisation Effects 0.000 abstract 2
- 238000011105 stabilization Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 4
- 240000007320 Pinus strobus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a sensor output circuit for a simulation vehicle, comprising a PWM signal output circuit, a PWM signal processing circuit, a reshaping circuit and an AC-DC conversion circuit which are connected in series; the PWM signal output circuit is used for outputting an adjustable PWM voltage signal; the PWM processing circuit is used for performing wave stabilization, current limitation and voltage stabilization on the PWM voltage signal; the reshaping circuit is used for performing reshaping on the processed PWM voltage signal; and the AC-DC conversion circuit is used for converting the PWM waveform to DC waveform to output a DC voltage signal. The sensor output circuit for simulation vehicle quickly and accurately simulates the vehicle sensor to output the voltage to the ECU, avoids the error of the artificial adjustment, reduces the workload of production and examination staff, and improves the efficiency of production and examination.
Description
Technical field
The present invention relates to automobile sensor technical field, particularly a kind of for simulating the circuit that automobile sensor exports.
Background technology
In the production testing process of vehicle electronic control unit (ECU), when detecting ECU, must detect the input signal of each sensor of ECU, judge that the change that can ECU input according to each sensor signal controls actuator change, thus determine that whether ECU various functions is normal.
The method of circuit many employings adjustable resistance analog voltage-dividing that each sensor of traditional simulation exports, the voltage delivering into ECU is changed by the change in resistance of manual shift adjustable resistance, namely the voltage value change of each sensor input ECU is simulated, this method wastes time and energy, sometimes also do not reach the magnitude of voltage required for detection, therefore a kind ofly the circuit of automatic control and adjustment simulation automobile sensor output voltage can just seem particularly important.
Summary of the invention
The technical issues that need to address of the present invention be to provide a kind of can fast and accurate simulation automobile sensor output voltage to the circuit of ECU, to alleviate production, inspection employee workload, and improve produce, checkability.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
A kind of simulation automobile sensor output circuit, comprise the pwm signal output circuit, pwm signal treatment circuit, shaping circuit and the ac-dc converter circuit that connect successively, described pwm signal output circuit is for exporting adjustable PWM voltage signal, pwm signal treatment circuit is used for carrying out steady ripple, current limliting and voltage stabilizing process to PWM voltage signal, shaping circuit is used for carrying out Shape correction to treated PWM voltage signal, and ac-dc converter circuit is used for PWM waveform being converted into DC waveform and exports d. c. voltage signal.
Above-mentioned one simulation automobile sensor output circuit, described pwm signal treatment circuit comprises the stabilivolt being connected to the first pull-up resistor between input end and power Vcc, being connected to the second current-limiting resistance between input end and shaping circuit and being connected between shaping circuit input end and ground.
Above-mentioned one simulation automobile sensor output circuit, the main chip of described shaping circuit is Schmidt trigger.
Above-mentioned one simulation automobile sensor output circuit, described ac-dc converter circuit comprises and is connected in shaping circuit output terminal and the 3rd electric capacity between ground, the 4th electric capacity, the 5th electric capacity in parallel and is connected to the 4th resistance between the 3rd capacitance cathode with the 4th capacitance cathode, is connected the 5th resistance between the 4th capacitance cathode and the 5th capacitance cathode and is connected to the 5th the 6th resistance between capacitance cathode and output terminal, and the negative pole of the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity altogether.
Above-mentioned one simulation automobile sensor output circuit, is also connected with the 3rd current-limiting resistance between described shaping circuit and ac-dc converter circuit.
Owing to have employed above technical scheme, the invention technological progress is as follows.
The present invention can fast and accurate simulation automobile sensor output voltage to the single-chip microcomputer voltage detecting circuit in ECU, thus can judge that whether ECU function is normal according to the voltage-regulation actuator work detected according to ECU, avoid the error of manual shift, alleviate production, inspection employee workload, improve production testing efficiency.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the circuit diagram of specific embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
A kind of simulation automobile sensor output circuit, its structured flowchart as shown in Figure 1, specifically comprise the pwm signal output circuit, pwm signal treatment circuit, shaping circuit and the ac-dc converter circuit that connect successively, pwm signal output circuit is for exporting adjustable PWM voltage signal, pwm signal treatment circuit is used for carrying out steady ripple, current limliting and voltage stabilizing process to PWM voltage signal, shaping circuit is used for carrying out Shape correction to treated PWM voltage signal, and ac-dc converter circuit is used for PWM waveform being converted into DC waveform and exports d. c. voltage signal.
As shown in Figure 2, wherein pwm signal output circuit can adopt single-chip microcomputer to export to the circuit diagram of the present embodiment, also can adopt the PWM voltage signal that the detection control device output duty cycle on monitor station is adjustable.
Pwm signal treatment circuit comprises the stabilivolt Z1 being connected to the first pull-up resistor R1 between input end and power Vcc, being connected to the second current-limiting resistance R2 between input end and shaping circuit and being connected between shaping circuit input end and ground.First pull-up resistor R1 plays stable waveform; Second current-limiting resistance R2 plays metering function; Stabilivolt Z1 starting voltage inhibiting effect, can effectively be stabilized in PWM voltage signal in range of control, thus prevents the tested ECU of the excessive damage of PWM voltage signal.
The main chip of shaping circuit is Schmidt trigger, reaches the object of PWM voltage signal being carried out to shaping.In the present embodiment, Schmidt trigger adopts MM74HC14 chip, the output terminal of the input termination pwm signal treatment circuit of MM74HC14 chip, and the output terminal of MM74HC14 chip connects the input end of ac-dc converter circuit through the 3rd current-limiting resistance R3.
Ac-dc converter circuit is used for PWM waveform to be converted into DC waveform, comprise and be connected in shaping circuit output terminal and the 3rd electric capacity C3 between ground, the 4th electric capacity C4, the 5th electric capacity C5 in parallel and be connected to the 4th resistance R4 between the 3rd capacitance cathode with the 4th capacitance cathode, be connected the 5th resistance R5 between the 4th capacitance cathode and the 5th capacitance cathode and be connected to the 5th the 6th resistance R6 between capacitance cathode and output terminal, the negative pole of the 3rd electric capacity C3, the 4th electric capacity C4 and the 5th electric capacity C5 altogether.DC voltage waveform after ac-dc converter circuit transforms can be directly inputted to tested ECU.
In the present embodiment, first electric capacity C1 is connected between Vcc and ground, second electric capacity C2 is connected between the input end of Schmidt trigger and ground, and the 6th electric capacity C6 is connected between the output terminal of ac-dc converter circuit and ground, and the first electric capacity C1, the second electric capacity C2 and the 6th electric capacity C6 all strobe.
Principle of work of the present invention is: PWM in monitor station detection control device controls the adjustable PWM voltage signal of output circuit output duty cycle, and this PWM voltage signal is by the Single-chip Controlling in detection control device, thus Reliable guarantee precision.
Controlled PWM voltage signal connects Vcc by the first pull-up resistor R1, and make PWM waveform be in steady state (SS) always, avoid interference, the first electric capacity C1 plays filtering clutter; PWM voltage signal is through the second current-limiting resistance R2 current limliting, and now, PWM voltage signal ceiling voltage can suppress within the scope of single-chip microcomputer safe voltage by stabilivolt Z1 effectively, and the second electric capacity C2 strobes equally, removes clutter; Now, PWM voltage signal through suppressing carries out further shaping through Schmidt trigger, PWM voltage signal after shaping arrives ac-dc converter circuit through the 3rd current-limiting resistance R3, PWM voltage signal adjustable for dutycycle is directly converted into required d. c. voltage signal by ac-dc converter circuit, the undesired signal that final direct current signal may exist by the 6th electric capacity C6 is removed, and then directly inputs to tested ECU.
The present invention can the various Hall element signal such as simulated oil gate signal, pressure signal, air flow sensor well.
Claims (5)
1. a simulation automobile sensor output circuit, it is characterized in that: comprise the pwm signal output circuit, pwm signal treatment circuit, shaping circuit and the ac-dc converter circuit that connect successively, described pwm signal output circuit is for exporting adjustable PWM voltage signal, pwm signal treatment circuit is used for carrying out steady ripple, current limliting and voltage stabilizing process to PWM voltage signal, shaping circuit is used for carrying out Shape correction to treated PWM voltage signal, and ac-dc converter circuit is used for PWM waveform being converted into DC waveform and exports d. c. voltage signal.
2. one simulation automobile sensor output circuit according to claim 1, is characterized in that: described pwm signal treatment circuit comprises the stabilivolt (Z1) being connected to the first pull-up resistor (R1) between input end and power Vcc, being connected to the second current-limiting resistance (R2) between input end and shaping circuit and being connected between shaping circuit input end and ground.
3. one simulation automobile sensor output circuit according to claim 1, is characterized in that: the main chip of described shaping circuit is Schmidt trigger.
4. one simulation automobile sensor output circuit according to claim 1, it is characterized in that: described ac-dc converter circuit comprises the 3rd electric capacity (C3) be connected in parallel between shaping circuit output terminal and ground, 4th electric capacity (C4), 5th electric capacity (C5) and the 4th resistance (R4) be connected between the 3rd capacitance cathode and the 4th capacitance cathode, connect the 5th resistance (R5) between the 4th capacitance cathode and the 5th capacitance cathode and be connected to the 5th the 6th resistance (R6) between capacitance cathode and output terminal, 3rd electric capacity (C3), the negative pole of the 4th electric capacity (C4) and the 5th electric capacity (C5) altogether.
5. one simulation automobile sensor output circuit according to claim 4, is characterized in that: be also connected with the 3rd current-limiting resistance (R3) between described shaping circuit and ac-dc converter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510365355.5A CN105094115A (en) | 2015-06-29 | 2015-06-29 | Sensor output circuit for simulation vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510365355.5A CN105094115A (en) | 2015-06-29 | 2015-06-29 | Sensor output circuit for simulation vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN105094115A true CN105094115A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510365355.5A Pending CN105094115A (en) | 2015-06-29 | 2015-06-29 | Sensor output circuit for simulation vehicle |
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| CN (1) | CN105094115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327816A (en) * | 2020-12-11 | 2021-02-05 | 湖南联诚轨道装备有限公司 | Portable brake resistor temperature control box debugging device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497178A (en) * | 2011-12-09 | 2012-06-13 | 綦江齿轮传动有限公司 | Circuit and method for processing rotating speed signal |
| CN102619970A (en) * | 2011-01-28 | 2012-08-01 | 同济大学 | Electronic control unit for dry-type 5-speed-grade double clutch transmission and application thereof |
| CN202424682U (en) * | 2011-12-05 | 2012-09-05 | 郑州宇通客车股份有限公司 | PWM (pulse-width modulation)-based isolated analog output circuit for new energy vehicle |
| KR101372686B1 (en) * | 2011-08-03 | 2014-03-11 | 웨-메이 치우 | A pulse width modulation control circuit of power converter and a method thereof |
| CN204296852U (en) * | 2014-12-20 | 2015-04-29 | 株洲易力达机电有限公司 | A kind of Electric Power Steering Control System of Automobile |
| CN204759195U (en) * | 2015-06-29 | 2015-11-11 | 无锡隆盛科技股份有限公司 | Automobile -used sensor output circuit simulates |
-
2015
- 2015-06-29 CN CN201510365355.5A patent/CN105094115A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619970A (en) * | 2011-01-28 | 2012-08-01 | 同济大学 | Electronic control unit for dry-type 5-speed-grade double clutch transmission and application thereof |
| KR101372686B1 (en) * | 2011-08-03 | 2014-03-11 | 웨-메이 치우 | A pulse width modulation control circuit of power converter and a method thereof |
| CN202424682U (en) * | 2011-12-05 | 2012-09-05 | 郑州宇通客车股份有限公司 | PWM (pulse-width modulation)-based isolated analog output circuit for new energy vehicle |
| CN102497178A (en) * | 2011-12-09 | 2012-06-13 | 綦江齿轮传动有限公司 | Circuit and method for processing rotating speed signal |
| CN204296852U (en) * | 2014-12-20 | 2015-04-29 | 株洲易力达机电有限公司 | A kind of Electric Power Steering Control System of Automobile |
| CN204759195U (en) * | 2015-06-29 | 2015-11-11 | 无锡隆盛科技股份有限公司 | Automobile -used sensor output circuit simulates |
Non-Patent Citations (1)
| Title |
|---|
| 田光辉: "汽车智能检测系统的研究与开发", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327816A (en) * | 2020-12-11 | 2021-02-05 | 湖南联诚轨道装备有限公司 | Portable brake resistor temperature control box debugging device |
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