CN108121320A - A kind of car charger control system testing stand based on DSP - Google Patents
A kind of car charger control system testing stand based on DSP Download PDFInfo
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- CN108121320A CN108121320A CN201611065829.5A CN201611065829A CN108121320A CN 108121320 A CN108121320 A CN 108121320A CN 201611065829 A CN201611065829 A CN 201611065829A CN 108121320 A CN108121320 A CN 108121320A
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- circuit
- dsp
- control system
- car charger
- testing stand
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- 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
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
A kind of car charger control system testing stand based on DSP, suitable for charge control field.For the debugging of Dcsoov car chargers control system, fast and accurately demand, test bench circuit are mainly made of DSP core control circuit, external display with 2 part of control circuit.Using Design of Amplifiers pulse modulate circuit and controllable constant current source circuit, using CPLD design logic control circuits, external display circuit is designed using ARM9 chips.The system uses DSP development systems, and control system debugging is quick, accurate, can reach system requirements and reduce cost, ensure that the job stability of system, has stronger anti-interference and reliability.
Description
Technical field
The present invention relates to a kind of car charger control system testing stand based on DSP, suitable for charge control field.
Background technology
With the expansion in China railways electrification region, the development of Power Electronic Technique, on new type passenger car, DC600 V
Bussed supply system will progressively substitute original generator car electric power system, so that passenger car inverter, the loading of freight waggon of charger
It is continuously increased, the workload for producing, debugging and repairing is also increasing.Original DC600V cars charger control system is manual
Testing stand has been unable to meet demand.
Can electric automobile battery charger realize the two-way of energy as connection power grid and the power electronic equipment of electric vehicle
Flowing, determines that can ev industry quickly advance.Simultaneously electric automobile battery charger can realize it is safe efficient,
The intelligent charge and discharge of High Power Factor, low harmony wave, determine whether designed electric vehicle can veritably provide for people
It is convenient, it is determined whether that it has a critically important index for the market competitiveness.Therefore under current situation, electric vehicle intelligence
The research tool of energy type charger has very important significance.
The content of the invention
The present invention provides a kind of car charger control system testing stand based on DSP, and the system is using DSP exploitations system
System, control system debugging is quick, accurate, can reach system requirements and reduce cost, ensure that the job stability of system, has
There are stronger anti-interference and reliability.
The technical solution adopted in the present invention is：
Fast and accurately demand is debugged for Dcsoov car chargers control system, test bench circuit is mainly by DSP core control
Circuit processed, external display are formed with 2 part of control circuit.Using Design of Amplifiers pulse modulate circuit and controllable constant-current source
Using CPLD design logic control circuits, external display circuit is designed using ARM9 chips for circuit.
The test bench circuit is made of DSP core control circuit, external display with 2 part of control circuit.DSP core control
Circuit processed mainly includes two big functions.When with the digital quantity of system under test (SUT) and the interface function of analog quantity, including interface level
Conversion inputs the analog-to-digital conversion of analog quantity, the measurement of pwm pulse temporal characteristics value and the digital-to-analogue conversion of output analog quantity etc..
Second is that information exchange is carried out with control circuit with external display by usb bus, according to the information control obtained from usb bus not
With the digital quantity of level and the output of analog quantity, while by digital quantity and analog input and the temporal characteristics value of pulse test
External display and control circuit are fed back to by usb bus.
In the car charger control system, DSP uses 32 fixed-point dsps of TI companies
TMS320F28125, highest can work under 150 MHz dominant frequency.TMS320F2812 has peripheral hardware in abundant piece, including general
Input/output port (General Purpose I/O, GPIO), on piece analog-to-digital conversion module (Analog-to-Ihgital
Converter, ADC), high-speed capture unit (Capture Unit, CAP) and external storage expansion interface (External
Interface, XINTF) etc..Input/output interface of the GPIO modules as digital quantity, can be with reference to external level conversion circuit
Complete the related output of relay signal and feedback collection function.This circuit is inputted using A/D, and 5 passages are as circuit-under-test arteries and veins
The sampling input port of punching, 6 passages sample simultaneously, and sample frequency is sent out for 125 kHzCAP for gathering pwm pulse waveform edge
The raw moment calculates the temporal characteristics value of pulse.External RAM, mono- circuits of CPI and USB interface electricity are extended for DSP by XINTF
Road.Usb circuit is using the PDIUSBDI2 chips of Philips companies as core.
In the controllable constant current source circuit, the sensor in DC600V car charger main circuits is all exported using electric current
Pattern, for the function of analog sensor, test system should equally use the pattern of electric current output.The number that DSP circuit generates
Word signal is converted into analog signal by D/A conversion circuits, is converted into using controllable constant current source circuit needed for system under test (SUT)
The current signal of sensor, into circuit-under-test plate.
The communication program of the usb communication thread display screen control panel carries out USB with dsp board by the driver and leads to
News carry out RS485 communications by serial ports 1 and system under test (SUT), are communicated by Transmission Control Protocol and Lacview interaction interface programs.This is logical
News program also realizes control centre simultaneously.
The beneficial effects of the invention are as follows：The system uses DSP development systems, and control system debugging is quick, accurate, can reach
System requirements and cost is reduced, ensure that the job stability of system, there is stronger anti-interference and reliability.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the charger testing stand composition frame chart of the present invention.
Fig. 2 is the control system composition frame chart of the present invention.
Fig. 3 is the controllable constant current source circuit of the present invention.
Fig. 4 is the usb communication flow of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1, test bench circuit is made of DSP core control circuit, external display with 2 part of control circuit.DSP core
Control circuit mainly includes two big functions.When with the digital quantity of system under test (SUT) and the interface function of analog quantity, including interface electricity
Flat turn is changed, and inputs the analog-to-digital conversion of analog quantity, the measurement of pwm pulse temporal characteristics value and the digital-to-analogue conversion for exporting analog quantity
Deng.Second is that information exchange is carried out with control circuit with external display by usb bus, according to the information control obtained from usb bus
The digital quantity of varying level processed and the output of analog quantity, at the same the time of digital quantity and analog input and pulse test is special
Value indicative feeds back to external display and control circuit by usb bus.
Such as Fig. 2, in car charger control system, DSP uses 32 fixed-point dsps of TI companies
TMS320F28125, highest can work under 150 MHz dominant frequency.TMS320F2812 has peripheral hardware in abundant piece, including general
Input/output port (General Purpose I/O, GPIO), on piece analog-to-digital conversion module (Analog-to-Ihgital
Converter, ADC), high-speed capture unit (Capture Unit, CAP) and external storage expansion interface (External
Interface, XINTF) etc..Input/output interface of the GPIO modules as digital quantity, can be with reference to external level conversion circuit
Complete the related output of relay signal and feedback collection function.This circuit is inputted using A/D, and 5 passages are as circuit-under-test arteries and veins
The sampling input port of punching, 6 passages sample simultaneously, and sample frequency is sent out for 125 kHzCAP for gathering pwm pulse waveform edge
The raw moment calculates the temporal characteristics value of pulse.External RAM, mono- circuits of CPI and USB interface electricity are extended for DSP by XINTF
Road.Usb circuit is using the PDIUSBDI2 chips of Philips companies as core.
Such as Fig. 3, in controllable constant current source circuit, the sensor in DC600V car charger main circuits is all defeated using electric current
The pattern gone out, for the function of analog sensor, test system should equally use the pattern of electric current output.What DSP circuit generated
Digital signal is converted into analog signal by D/A conversion circuits, is converted into using controllable constant current source circuit needed for system under test (SUT)
Sensor current signal, into circuit-under-test plate.
Such as Fig. 4, the communication program of usb communication thread display screen control panel carries out USB with dsp board by the driver and leads to
News carry out RS485 communications by serial ports 1 and system under test (SUT), are communicated by Transmission Control Protocol and Lacview interaction interface programs.This is logical
News program also realizes control centre simultaneously.
Claims (9)
1. a kind of car charger control system testing stand based on DSP, it is characterized in that：The test bench circuit mainly by
DSP core control circuit, external display are formed with 2 part of control circuit.
2. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
Car charger control system uses Design of Amplifiers pulse modulate circuit and controllable constant current source circuit, is designed using CPLD
Logic control circuit designs external display circuit using ARM9 chips.
3. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
Test bench circuit be made of DSP core control circuit, external display with 2 part of control circuit.
4. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
DSP core control circuit mainly include two big functions；First, with the digital quantity of system under test (SUT) and the interface function of analog quantity, wrap
Interface level conversion is included, inputs the analog-to-digital conversion of analog quantity, the measurement of pwm pulse temporal characteristics value and output analog quantity
Digital-to-analogue conversion etc..
5. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
DSP core control circuit carries out information exchange by usb bus and external display with control circuit, and foundation is obtained from usb bus
The digital quantity of information control varying level and the output of analog quantity, while by digital quantity and analog input and pulse test
Temporal characteristics value external display and control circuit are fed back to by usb bus.
6. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
In car charger control system, DSP uses 32 fixed-point dsp TMS320F28125 of TI companies, and highest can
It works under 150 MHz dominant frequency.
7. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
Circuit is inputted using A/D, and sampling input port of 5 passages as circuit-under-test pulse, 6 passages sample simultaneously, and sample frequency is
For gathering pwm pulse waveform edge occurs for 125 kHzCAP the moment, calculates the temporal characteristics value of pulse.
8. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
In controllable constant current source circuit, pattern that sensor in DC600V car charger main circuits is all exported using electric current, in order to
The function of analog sensor, test system should equally use the pattern of electric current output.
9. a kind of car charger control system testing stand based on DSP according to claim 1, it is characterized in that：It is described
The communication program of usb communication thread display screen control panel carries out USB communications by the driver and dsp board, by serial ports 1 with
System under test (SUT) carries out RS485 communications, is communicated by Transmission Control Protocol and Lacview interaction interface programs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065829.5A CN108121320A (en) | 2016-11-28 | 2016-11-28 | A kind of car charger control system testing stand based on DSP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065829.5A CN108121320A (en) | 2016-11-28 | 2016-11-28 | A kind of car charger control system testing stand based on DSP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108121320A true CN108121320A (en) | 2018-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611065829.5A Pending CN108121320A (en) | 2016-11-28 | 2016-11-28 | A kind of car charger control system testing stand based on DSP |
Country Status (1)
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| CN (1) | CN108121320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761255A (en) * | 2018-08-16 | 2018-11-06 | 青岛特来电新能源有限公司 | Portable charging system develops debugging instrument and charging system development device |
| CN114488844A (en) * | 2021-12-24 | 2022-05-13 | 中车永济电机有限公司 | Three-level bidirectional DC-DC charger semi-physical test platform and test method |
-
2016
- 2016-11-28 CN CN201611065829.5A patent/CN108121320A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761255A (en) * | 2018-08-16 | 2018-11-06 | 青岛特来电新能源有限公司 | Portable charging system develops debugging instrument and charging system development device |
| CN114488844A (en) * | 2021-12-24 | 2022-05-13 | 中车永济电机有限公司 | Three-level bidirectional DC-DC charger semi-physical test platform and test method |
| CN114488844B (en) * | 2021-12-24 | 2023-10-13 | 中车永济电机有限公司 | Three-level bidirectional DC-DC charger semi-physical test platform and test method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180605 |