CN105291859A - Eddy current retarder control system based on voltage reduction constant current source - Google Patents
Eddy current retarder control system based on voltage reduction constant current source Download PDFInfo
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- CN105291859A CN105291859A CN201510819038.6A CN201510819038A CN105291859A CN 105291859 A CN105291859 A CN 105291859A CN 201510819038 A CN201510819038 A CN 201510819038A CN 105291859 A CN105291859 A CN 105291859A
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- eddy current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses an eddy current retarder control system based on a voltage reduction constant current source. The eddy current retarder control system based on the voltage reduction constant current source comprises an eddy current retarder and is characterized by also comprising a singlechip, a voltage reduction constant current power supply, a braking pedal, a gear switch, a pulse signal acquisition unit, a switching value signal processing unit, a CAN bus data transceiving unit and a braking car lamp driving unit which are respectively connected with the singlechip, a car main control unit and a trip computer which are respectively connected with the CAN bus data transceiving unit and an eddy current retarder driving unit connected with the switching value signal processing unit; and the eddy current retarder is also connected with the pulse signal acquisition unit and the eddy current retarder driving unit. The eddy current retarder control system based on the voltage reduction constant current source has the advantages that sharing of a vehicle signal is realized, wire harnesses on a vehicle are reduced, and the reliability of the eddy current retarder control system can be improved; meanwhile, the eddy current retarder control system based on the voltage reduction constant current source has constant working current, so that the eddy current retarder can be stably controlled, and the braking performance of the eddy current retarder is improved.
Description
Technical field
The present invention relates to a kind of eddy current retarder control system, specifically refer to a kind of eddy current retarder control system based on step-down constant current source.
Background technology
Current vortex retarder is a kind of auxiliary brake device for automobile, is commonly called as electricity and stops, and is mainly used in motor omnibus, urban public traffic vehicles and heavy duty truck.This device is arranged between automobile drive axle and change speed gear box, realizes no touch braking by electromagnetic induction principle.
Along with popularizing of current vortex retarder, simultaneously electric system increasing on passenger vehicle, current vortex retarder and such as the information exchange between ABS system, engine management system of other electric systems get more and more, and traditional electric signal mode causes eddy current retarder control system wire harness to become increasingly complex, add cost, reduce reliability.Meanwhile, traditional eddy current retarder control system does not possess stable operating voltage, and what cause that it cannot be stable controls current vortex retarder.
Summary of the invention
The object of the invention is to overcome traditional eddy current retarder control system wire harness complicated, and do not possess stable operating voltage, and cause the defect that current vortex retarder is controlled that it cannot be stable, a kind of eddy current retarder control system based on step-down constant current source is provided.
Object of the present invention is achieved through the following technical solutions: based on the eddy current retarder control system of step-down constant current source, comprise current vortex retarder, micro controller system, the step-down constant-current supply be connected with micro controller system respectively, brake pedal, driving switch, pulse signal acquisition unit, on-off model processing unit, CAN data transceiving unit and brake car light driver element, the automobile main control unit be connected with CAN data transceiving unit respectively and car running computer, and the current vortex retarder driver element be connected with on-off model processing unit, described current vortex retarder is then connected with current vortex retarder driver element with pulse signal acquisition unit simultaneously, described step-down constant-current supply is by power supply GB, process chip U3, aerotron VT3, field effect transistor MOS1, field effect transistor MOS2, one end is connected with the positive pole of power supply GB, the resistance R9 that the other end is then connected with the VIN pin of process chip U3, positive pole is connected with the CS pin of process chip U3 after resistance R11, the electric capacity C3 that negative pole is then connected with LD pin and the PWMD pin of process chip U3 after resistance R10 simultaneously, be serially connected in the resistance R13 between the source electrode of field effect transistor MOS1 and the negative pole of electric capacity C3, N pole is connected with the positive pole of electric capacity C3, the diode D3 that P pole is then connected with the drain electrode of field effect transistor MOS2, one end is connected with the drain electrode of field effect transistor MOS1, the other end is then in turn through inductance L 1 that resistance R15 is connected with the grid of field effect transistor MOS2 after resistance R14, be serially connected in the resistance R12 between the RT pin of process chip U3 and the base stage of aerotron VT3, N pole is connected with the collecting electrode of aerotron VT3, the diode D2 that P pole is then connected with the drain electrode of field effect transistor MOS1, and positive pole is connected with the emitter of aerotron VT3, the electric capacity C4 that negative pole is then connected with the point of connection of resistance R15 with inductance L 1 forms, the VDD pin of described process chip U3 is connected with the negative pole of power supply GB, its GND pin ground connection, GATE pin are then connected with the grid of field effect transistor MOS1, the source electrode of described field effect transistor MOS2 is then connected with the point of connection of inductance L 1 with resistance R15, the emitter of described aerotron VT3 then forms the mouth of step-down constant-current supply with resistance R15 and is connected with micro controller system together with the point of connection of resistance R14.
Further, described on-off model processing unit is by switching value treatment circuit, and the closed-loop detection circuit be in parallel with switching value treatment circuit forms, the input end of described switching value treatment circuit is connected with micro controller system, its mouth is then connected with the input end of current vortex retarder driver element, described switching value treatment circuit is by photoelectrical coupler U1, aerotron VT1, one end is as the input end of this switching value treatment circuit, the resistance R1 that the other end is then connected with the electrode input end of photoelectrical coupler U1 after resistance R2, positive pole is connected with the point of connection of resistance R2 with resistance R1, the electric capacity C1 of ground connection while negative pole is then connected with the negative input of photoelectrical coupler U1, be serially connected in the resistance R3 between the base stage of aerotron VT1 and emitter, and one end is connected with the collecting electrode of aerotron VT1, the resistance R4 that the other end then forms the mouth of this switching value treatment circuit forms, first mouth of described photoelectrical coupler U1 is connected with the base stage of aerotron VT1, its second mouth then ground connection.
Described closed-loop detection circuit is then by field effect transistor MOS, aerotron VT2, photoelectrical coupler U2, P pole is connected with the drain electrode of field effect transistor MOS, the diode D1 that N pole is then connected with the positive pole of electric capacity C1 after resistance R1, one end is connected with the grid of field effect transistor MOS, the resistance R7 that the other end is then connected with the base stage of aerotron VT2 after resistance R8, one end is connected with the source electrode of field effect transistor MOS, the resistance R6 that the other end is then connected with the point of connection of resistance R8 with resistance R7, and positive pole is connected with the collecting electrode of aerotron VT1 after resistance R4 through resistance R5 in turn, the electric capacity C2 that negative pole is then connected with the electrode input end of photoelectrical coupler U2 forms, negative input ground connection, its first mouth of described photoelectrical coupler U2 are then connected with the collecting electrode of aerotron VT2, its second mouth then ground connection, the grounded emitter of described aerotron VT2.
Described process chip U3 is HV9861A integrated chip.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention is compared with existing eddy current retarder control system, and it achieves sharing of signals of vehicles, decreases the wire harness on vehicle, can improve the reliability of eddy current retarder control system, and reduce manufacturing cost.
(2) the present invention can process the drive singal of current vortex retarder and detect, and the drive singal avoiding system to send occurs mistake and causes current vortex retarder damage or affect its deceleration and stopping performance.
(3) the present invention has constant working current, and what therefore it can be stable controls current vortex retarder, improves the deceleration and stopping performance of current vortex retarder.
Accompanying drawing explanation
Fig. 1 is integral structure block diagram of the present invention.
Fig. 2 is the circuit structure diagram of on-off model processing unit of the present invention.
Fig. 3 is the circuit structure diagram of step-down constant-current supply of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the eddy current retarder control system based on step-down constant current source of the present invention, it is by current vortex retarder, pulse signal acquisition unit, current vortex retarder driver element, on-off model processing unit, micro controller system, brake pedal, driving switch, step-down constant-current supply, CAN data transceiving unit, braking car light driver element, automobile main control unit and car running computer 12 part composition.
Wherein, micro controller system is as control center of the present invention, and it is respectively with step-down constant-current supply, brake pedal, driving switch, pulse signal acquisition unit, on-off model processing unit, CAN data transceiving unit and brake car light driver element and be connected.Described automobile main control unit is then connected with CAN data transceiving unit respectively with car running computer.Described current vortex retarder driver element is then connected with on-off model processing unit.Described current vortex retarder is then connected with pulse signal acquisition unit and current vortex retarder driver element simultaneously.
During enforcement, brake pedal and driving switch send pressure signal and gear signal respectively to micro controller system, and micro controller system then sends current vortex retarder control signal according to this pressure signal and gear signal to on-off model processing unit; This current vortex retarder control signal is input to current vortex retarder driver element after on-off model processing unit, is controlled current vortex retarder by current vortex retarder driver element.Meanwhile, described micro controller system also sends drive singal to braking car light driver element, lights braking car light.
Described pulse signal acquisition unit is then for gathering the load signal of current vortex retarder and being transferred to micro controller system; Described micro controller system then calculates the lock torque of current vortex retarder according to load signal, and sends automobile main control unit and car running computer to by CAN data transceiving unit.The present invention adopts CAN data transceiving unit to transmit information, can reduce the wire harness of control system, improves reliability of the present invention.Described step-down constant-current supply is then for providing constant working current to whole control system.
In order to better control current vortex retarder, as shown in Figure 2, described on-off model processing unit is by switching value treatment circuit, and the closed-loop detection circuit be in parallel with switching value treatment circuit forms.The input end of described switching value treatment circuit is connected with micro controller system, its mouth is then connected with the input end of current vortex retarder driver element.
Described switching value treatment circuit is by photoelectrical coupler U1, and aerotron VT1, resistance R1, resistance R2, resistance R3, resistance R4 and electric capacity C1 form.
During connection, one end of this resistance R1 is connected with the electrode input end of photoelectrical coupler U1 after resistance R2, its other end then as the input end of this switching value treatment circuit, this input end is then connected with micro controller system.Ground connection while the positive pole of described electric capacity C1 is connected with the point of connection of resistance R2 with resistance R1, its negative pole is then connected with the negative input of photoelectrical coupler U1.Therefore, electric capacity C1 and resistance R1 and resistance R2 then forms a RC filter, after the input of current vortex retarder control signal is come in, carries out filtering process, then be input to photoelectrical coupler U1 by RC filter, and electric conduction coupler U1.
In addition, between the resistance R3 base stage that is serially connected in aerotron VT1 and emitter.The mouth that one end of resistance R4 is connected with the collecting electrode of aerotron VT1, its other end then forms this switching value treatment circuit, this mouth is then connected with current vortex retarder driver element, and current vortex retarder control signal is then delivered to current vortex retarder driver element by this mouth.First mouth of described photoelectrical coupler U1 is connected with the base stage of aerotron VT1, its second mouth then ground connection.
Whether described closed-loop detection circuit exists exception for detecting current vortex retarder control signal, it is by field effect transistor MOS, aerotron VT2, photoelectrical coupler U2, P pole is connected with the drain electrode of field effect transistor MOS, the diode D1 that N pole is then connected with the positive pole of electric capacity C1 after resistance R1, one end is connected with the grid of field effect transistor MOS, the resistance R7 that the other end is then connected with the base stage of aerotron VT2 after resistance R8, one end is connected with the source electrode of field effect transistor MOS, the resistance R6 that the other end is then connected with the point of connection of resistance R8 with resistance R7, and positive pole is connected with the collecting electrode of aerotron VT1 after resistance R4 through resistance R5 in turn, the electric capacity C2 that negative pole is then connected with the electrode input end of photoelectrical coupler U2 forms.Negative input ground connection, its first mouth of described photoelectrical coupler U2 are then connected with the collecting electrode of aerotron VT2, its second mouth then ground connection.The grounded emitter of described aerotron VT2.
As shown in Figure 3, described step-down constant-current supply is by power supply GB, process chip U3, aerotron VT3, field effect transistor MOS1, field effect transistor MOS2, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electric capacity C3, electric capacity C4, inductance L 1, diode D2 and diode D3 forms.
Wherein, power supply GB is used for the invention provides working current, and its positive pole is connected with the VIN pin of process chip U3 after resistance R9, and its negative pole is then connected with the VDD pin of process chip U3.The electric current that this power supply GB exports is input to process chip U3 after resistance R9, and do constant current process by process chip U3, in order to reach better treatment effect, this process chip U3 preferentially adopts HV9861A integrated chip to realize.
In addition, the positive pole of electric capacity C3 is connected with the CS pin of process chip U3 after resistance R11, its negative pole is then connected with the LD pin of process chip U3 and PWMD pin after resistance R10 simultaneously.Resistance R13 is then serially connected between the source electrode of field effect transistor MOS1 and the negative pole of electric capacity C3.The N pole of diode D3 is connected with the positive pole of electric capacity C3, its P pole is then connected with the drain electrode of field effect transistor MOS2.One end of inductance L 1 is connected with the drain electrode of field effect transistor MOS1, its other end is then connected with the grid of field effect transistor MOS2 after resistance R14 through resistance R15 in turn.Resistance R12 is then serially connected between the RT pin of process chip U3 and the base stage of aerotron VT3.The N pole of diode D2 is connected with the collecting electrode of aerotron VT3, its P pole is then connected with the drain electrode of field effect transistor MOS1.The positive pole of electric capacity C4 is connected with the emitter of aerotron VT3, its negative pole is then connected with the point of connection of inductance L 1 with resistance R15.
Meanwhile, the GND pin ground connection of described process chip U3, its GATE pin are then connected with the grid of field effect transistor MOS1.The source electrode of described field effect transistor MOS2 is then connected with the point of connection of inductance L 1 with resistance R15.The emitter of described aerotron VT3 then forms the mouth of step-down constant-current supply together with the point of connection of resistance R14 with resistance R15, the mouth of this step-down constant-current supply is then connected with micro controller system.
During work, the electric current exported from process chip U3 makes aerotron VT3 and field effect transistor MOS1 conducting, and is input to micro controller system after the RC filter filtering formed via electric capacity C4 and resistance R15.
As mentioned above, just well the present invention can be implemented.
Claims (4)
1. based on the eddy current retarder control system of step-down constant current source, comprise current vortex retarder, it is characterized in that, also comprise micro controller system, the step-down constant-current supply be connected with micro controller system respectively, brake pedal, driving switch, pulse signal acquisition unit, on-off model processing unit, CAN data transceiving unit and brake car light driver element, the automobile main control unit be connected with CAN data transceiving unit respectively and car running computer, and the current vortex retarder driver element be connected with on-off model processing unit, described current vortex retarder is then connected with current vortex retarder driver element with pulse signal acquisition unit simultaneously, described step-down constant-current supply is by power supply GB, process chip U3, aerotron VT3, field effect transistor MOS1, field effect transistor MOS2, one end is connected with the positive pole of power supply GB, the resistance R9 that the other end is then connected with the VIN pin of process chip U3, positive pole is connected with the CS pin of process chip U3 after resistance R11, the electric capacity C3 that negative pole is then connected with LD pin and the PWMD pin of process chip U3 after resistance R10 simultaneously, be serially connected in the resistance R13 between the source electrode of field effect transistor MOS1 and the negative pole of electric capacity C3, N pole is connected with the positive pole of electric capacity C3, the diode D3 that P pole is then connected with the drain electrode of field effect transistor MOS2, one end is connected with the drain electrode of field effect transistor MOS1, the other end is then in turn through inductance L 1 that resistance R15 is connected with the grid of field effect transistor MOS2 after resistance R14, be serially connected in the resistance R12 between the RT pin of process chip U3 and the base stage of aerotron VT3, N pole is connected with the collecting electrode of aerotron VT3, the diode D2 that P pole is then connected with the drain electrode of field effect transistor MOS1, and positive pole is connected with the emitter of aerotron VT3, the electric capacity C4 that negative pole is then connected with the point of connection of resistance R15 with inductance L 1 forms, the VDD pin of described process chip U3 is connected with the negative pole of power supply GB, its GND pin ground connection, GATE pin are then connected with the grid of field effect transistor MOS1, the source electrode of described field effect transistor MOS2 is then connected with the point of connection of inductance L 1 with resistance R15, the emitter of described aerotron VT3 then forms the mouth of step-down constant-current supply with resistance R15 and is connected with micro controller system together with the point of connection of resistance R14.
2. the eddy current retarder control system based on step-down constant current source according to claim 1, is characterized in that: described on-off model processing unit is by switching value treatment circuit, and the closed-loop detection circuit be in parallel with switching value treatment circuit forms, the input end of described switching value treatment circuit is connected with micro controller system, its mouth is then connected with the input end of current vortex retarder driver element, described switching value treatment circuit is by photoelectrical coupler U1, aerotron VT1, one end is as the input end of this switching value treatment circuit, the resistance R1 that the other end is then connected with the electrode input end of photoelectrical coupler U1 after resistance R2, positive pole is connected with the point of connection of resistance R2 with resistance R1, the electric capacity C1 of ground connection while negative pole is then connected with the negative input of photoelectrical coupler U1, be serially connected in the resistance R3 between the base stage of aerotron VT1 and emitter, and one end is connected with the collecting electrode of aerotron VT1, the resistance R4 that the other end then forms the mouth of this switching value treatment circuit forms, first mouth of described photoelectrical coupler U1 is connected with the base stage of aerotron VT1, its second mouth then ground connection.
3. the eddy current retarder control system based on step-down constant current source according to claim 2, it is characterized in that: described closed-loop detection circuit is then by field effect transistor MOS, aerotron VT2, photoelectrical coupler U2, P pole is connected with the drain electrode of field effect transistor MOS, the diode D1 that N pole is then connected with the positive pole of electric capacity C1 after resistance R1, one end is connected with the grid of field effect transistor MOS, the resistance R7 that the other end is then connected with the base stage of aerotron VT2 after resistance R8, one end is connected with the source electrode of field effect transistor MOS, the resistance R6 that the other end is then connected with the point of connection of resistance R8 with resistance R7, and positive pole is connected with the collecting electrode of aerotron VT1 after resistance R4 through resistance R5 in turn, the electric capacity C2 that negative pole is then connected with the electrode input end of photoelectrical coupler U2 forms, negative input ground connection, its first mouth of described photoelectrical coupler U2 are then connected with the collecting electrode of aerotron VT2, its second mouth then ground connection, the grounded emitter of described aerotron VT2.
4. the eddy current retarder control system based on step-down constant current source according to claim 3, is characterized in that: described process chip U3 is HV9861A integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819038.6A CN105291859A (en) | 2015-11-23 | 2015-11-23 | Eddy current retarder control system based on voltage reduction constant current source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819038.6A CN105291859A (en) | 2015-11-23 | 2015-11-23 | Eddy current retarder control system based on voltage reduction constant current source |
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| CN105291859A true CN105291859A (en) | 2016-02-03 |
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| CN201510819038.6A Withdrawn CN105291859A (en) | 2015-11-23 | 2015-11-23 | Eddy current retarder control system based on voltage reduction constant current source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109032030A (en) * | 2018-08-16 | 2018-12-18 | 株洲联诚集团控股股份有限公司 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system and method |
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| CN103832288A (en) * | 2014-03-13 | 2014-06-04 | 山东交通职业学院 | Eddy current retarder control system based on CAN bus |
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| DE102010011218A1 (en) * | 2010-03-11 | 2011-09-15 | Siemens Aktiengesellschaft | Stromeinspeiseeinrichtung for a current-supplied brake of a vehicle |
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| CN103832288A (en) * | 2014-03-13 | 2014-06-04 | 山东交通职业学院 | Eddy current retarder control system based on CAN bus |
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