CN204633733U - A kind of PWM power supply for vehicle electromagnetic valve performance test - Google Patents
A kind of PWM power supply for vehicle electromagnetic valve performance test Download PDFInfo
- Publication number
- CN204633733U CN204633733U CN201520288784.2U CN201520288784U CN204633733U CN 204633733 U CN204633733 U CN 204633733U CN 201520288784 U CN201520288784 U CN 201520288784U CN 204633733 U CN204633733 U CN 204633733U
- Authority
- CN
- China
- Prior art keywords
- chip
- pwm
- circuit
- electromagnetic valve
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Magnetically Actuated Valves (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of PWM power supply for vehicle electromagnetic valve performance test, it is characterized in that, comprise single-chip microcomputer, LCD, keyboard, D/A change-over circuit, pin-saving chip, there is chip in PWM, drive circuit, optical coupling isolation circuit, described single-chip microcomputer respectively with described LCD, described keyboard, described pin-saving chip, described D/A change-over circuit is connected, chip is there is respectively in described D/A change-over circuit with described PWM, described drive circuit is connected, there is chip and be connected with described optical coupling isolation circuit in described PWM, described optical coupling isolation circuit is connected with described drive circuit, the external electromagnetically operated valve of described drive circuit exports.The utility model adopts high accuracy function generation chip MAX038 and pulse-width modulation SG3525 chip to combine formation PWM generator, the PWM square wave produced is highly stable, achieve duty ratio, frequency and amplitude and according to set point consecutive variations, the difficult problem that electromagnetic valve work performance cannot be tested can be solved.
Description
Technical field
The utility model relates to a kind of PWM power supply for vehicle electromagnetic valve performance test, belongs to technical field.
Background technology
Along with the development of auto industry, the application of vehicle electromagnetic valve is more extensive, also more and more higher to the requirement of electromagnetic valve quality, detection before dispatching from the factory to electromagnetically operated valve like this just seems particularly important, except needing the quality detecting its mechanical part, also need the index that its energy long-time steady operation is provided, be therefore extremely necessary to provide simple, that vehicle electromagnetic valve performance test can the be used for PWM power supply of a kind of structure to carry out Performance Detection to vehicle electromagnetic valve.
Utility model content
For overcoming the deficiency that prior art exists, solving the problems of the technologies described above, the utility model proposes a kind of PWM power supply for vehicle electromagnetic valve performance test.
The utility model adopts following technical scheme: a kind of PWM power supply for vehicle electromagnetic valve performance test, it is characterized in that, comprise single-chip microcomputer, LCD, keyboard, D/A change-over circuit, pin-saving chip, there is chip in PWM, drive circuit, optical coupling isolation circuit, described single-chip microcomputer respectively with described LCD, described keyboard, described pin-saving chip, described D/A change-over circuit is connected, chip is there is respectively in described D/A change-over circuit with described PWM, described drive circuit is connected, there is chip and be connected with described optical coupling isolation circuit in described PWM, described optical coupling isolation circuit is connected with described drive circuit, the external electromagnetically operated valve of described drive circuit exports.
Preferably, keyboard is used for arranging system running state and system parameters, and LCD is used for running status, the controling parameters of display system.
Preferably, the external protective circuit of drive circuit, is used for protecting drive circuit, prevents the situation of overvoltage, overcurrent.
Preferably, optical coupling isolation circuit is used for pwm control signal and voltage amplitude amplifying signal to keep apart, the noise signal in elimination input circuit, the common land clutter signal in output loop.
Preferably, optical coupling isolation circuit adopts photoisolator 6N137.
Preferably, single-chip microcomputer adopts AT89C55 single-chip microcomputer.
Preferably, there is chip employing MAX038 chip and SG3525 chip in PWM.
Preferably, pin-saving chip adopts AT24C02EEPROM chip.
The beneficial effect that the utility model reaches: adopt high accuracy function generation chip MAX038 and pulse-width modulation SG3525 chip to combine formation PWM generator, controlled through D/A by single-chip microcomputer, the PWM square wave produced is highly stable, achieve duty ratio, frequency and amplitude and according to set point consecutive variations, the difficult problem that electromagnetic valve work performance cannot be tested can be solved.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
Fig. 1 is structured flowchart of the present utility model, the utility model proposes a kind of PWM power supply for vehicle electromagnetic valve performance test, it is characterized in that, comprise single-chip microcomputer, LCD, keyboard, D/A change-over circuit, pin-saving chip, there is chip in PWM, drive circuit, optical coupling isolation circuit, single-chip microcomputer respectively with LCD, keyboard, pin-saving chip, D/A change-over circuit is connected, chip is there is respectively in D/A change-over circuit with PWM, drive circuit is connected, there is chip and be connected with optical coupling isolation circuit in PWM, optical coupling isolation circuit is connected with drive circuit, the external electromagnetically operated valve of drive circuit exports, keyboard is used for arranging system running state and system parameters, and LCD is used for running status, the controling parameters of display system, the external protective circuit of drive circuit, is used for protecting drive circuit, prevents the situation of overvoltage, overcurrent.
Optical coupling isolation circuit is used for pwm control signal and voltage amplitude amplifying signal to keep apart, the noise signal in elimination input circuit, the common land clutter signal in output loop; Optical coupling isolation circuit adopts photoisolator 6N137; Single-chip microcomputer adopts AT89C55 single-chip microcomputer; There is chip and adopt MAX038 chip and SG3525 chip in PWM; Pin-saving chip adopts AT24C02EEPROM chip.
The course of work of the present utility model is as follows: first on LCD, set each parameter by keyboard and (comprise frequency, duty ratio, amplitude and transformation period), after pressing operation key, single-chip microcomputer reads in the parameter set, through controlling calculation, then check and use after convenient in the data information memory obtained to EEPROM, after completing, control signal is divided into two-way, one tunnel is responsible for the relevant information (mainly comprising the data message of frequency and duty ratio) of the PWM ripple of setting to give D/A, there is chip and send pwm pulse in the analog voltage control PWM exported after D/A conversion, the pwm signal produced is separated by through optical coupling isolation circuit and voltage amplitude control signal and is left, pwm control signal after isolation outputs to and drives in main circuit, another road amplitude control signal is directly provided through D/A by single-chip microcomputer, and main circuit is responsible for integrating two paths of signals, and through power amplification, the PWM square wave needed for final output is to electromagnetically operated valve.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection range of the present utility model.
Claims (8)
1. the PWM power supply for vehicle electromagnetic valve performance test, it is characterized in that, comprise single-chip microcomputer, LCD, keyboard, D/A change-over circuit, pin-saving chip, there is chip in PWM, drive circuit, optical coupling isolation circuit, described single-chip microcomputer respectively with described LCD, described keyboard, described pin-saving chip, described D/A change-over circuit is connected, chip is there is respectively in described D/A change-over circuit with described PWM, described drive circuit is connected, there is chip and be connected with described optical coupling isolation circuit in described PWM, described optical coupling isolation circuit is connected with described drive circuit, the external electromagnetically operated valve of described drive circuit exports.
2. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, it is characterized in that, described keyboard is used for arranging system running state and system parameters, and described LCD is used for running status, the controling parameters of display system.
3. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, is characterized in that, the external protective circuit of described drive circuit, is used for protecting drive circuit, prevents the situation of overvoltage, overcurrent.
4. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, it is characterized in that, described optical coupling isolation circuit is used for pwm control signal and voltage amplitude amplifying signal to keep apart, the noise signal in elimination input circuit, the common land clutter signal in output loop.
5. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 4, is characterized in that, described optical coupling isolation circuit adopts photoisolator 6N137.
6. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, is characterized in that, described single-chip microcomputer adopts AT89C55 single-chip microcomputer.
7. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, is characterized in that, described PWM chip occurs and adopts MAX038 chip and SG3525 chip.
8. a kind of PWM power supply for vehicle electromagnetic valve performance test according to claim 1, is characterized in that, described pin-saving chip adopts AT24C02EEPROM chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288784.2U CN204633733U (en) | 2015-05-07 | 2015-05-07 | A kind of PWM power supply for vehicle electromagnetic valve performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288784.2U CN204633733U (en) | 2015-05-07 | 2015-05-07 | A kind of PWM power supply for vehicle electromagnetic valve performance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633733U true CN204633733U (en) | 2015-09-09 |
Family
ID=54052713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520288784.2U Expired - Fee Related CN204633733U (en) | 2015-05-07 | 2015-05-07 | A kind of PWM power supply for vehicle electromagnetic valve performance test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204633733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868889A (en) * | 2015-05-07 | 2015-08-26 | 苏州固基电子科技有限公司 | Pulse-width modulation (PWM) power supply for performance test of automobile magnetic valve |
| CN112803926A (en) * | 2021-01-19 | 2021-05-14 | 北谷电子有限公司 | Driving method of proportional electromagnetic valve |
-
2015
- 2015-05-07 CN CN201520288784.2U patent/CN204633733U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868889A (en) * | 2015-05-07 | 2015-08-26 | 苏州固基电子科技有限公司 | Pulse-width modulation (PWM) power supply for performance test of automobile magnetic valve |
| CN112803926A (en) * | 2021-01-19 | 2021-05-14 | 北谷电子有限公司 | Driving method of proportional electromagnetic valve |
| CN112803926B (en) * | 2021-01-19 | 2022-06-10 | 北谷电子有限公司 | Driving method of proportional electromagnetic valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104868889A (en) | Pulse-width modulation (PWM) power supply for performance test of automobile magnetic valve | |
| CN204633733U (en) | A kind of PWM power supply for vehicle electromagnetic valve performance test | |
| CN204349439U (en) | The anti-straight-through drive circuit of magnetic latching relay of a kind of Intelligent capacitor | |
| CN201499137U (en) | Power amplifier | |
| CN201414124Y (en) | Isolation RS485 communication speed-raising circuit for low-speed optical coupler | |
| CN204316450U (en) | A kind of microwave frequency conversion power amplifier | |
| CN203761337U (en) | Directional strong sound warning system with adjustable power | |
| CN204288408U (en) | Four road wireless theft-proof alarms | |
| CN203616639U (en) | Multichannel pulse width modulation (PWM) controller and water spray controller | |
| CN204009448U (en) | A kind of industrial wireless communication telepilot based on 2.4G frequency hopping | |
| CN103855933A (en) | High-power and high-frequency power driving device | |
| CN201765482U (en) | PLC drive controller of electro-hydraulic proportional valve | |
| CN209105211U (en) | A kind of efficient amplitude modulation system | |
| CN203504500U (en) | Amplifier module group | |
| CN102096418B (en) | Maximum power point tracking device of solar assembly | |
| CN205177981U (en) | Energy -conserving box charging station battery environment temperature regulating system | |
| CN209593325U (en) | A kind of two-way driving power amplifier components | |
| CN204206574U (en) | A kind of LED power limitation control power supply | |
| CN204442090U (en) | A kind of motor controlling water power energy output | |
| CN206698189U (en) | A kind of power amplifier | |
| CN202886878U (en) | A signal converter | |
| CN204536386U (en) | A kind of circuit improving low frequency signal amplitude and export and control its precision | |
| CN203894562U (en) | Signal transmission system | |
| CN201726360U (en) | PA power amplification module of digital optical fiber pull-far system | |
| CN103401512A (en) | Dual-loop structural simulation predistorter of BUC module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150909 Termination date: 20160507 |