CN103204151B - Interface device of wheel speed sensor - Google Patents
Interface device of wheel speed sensor Download PDFInfo
- Publication number
- CN103204151B CN103204151B CN201210568554.2A CN201210568554A CN103204151B CN 103204151 B CN103204151 B CN 103204151B CN 201210568554 A CN201210568554 A CN 201210568554A CN 103204151 B CN103204151 B CN 103204151B
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- China
- Prior art keywords
- wheel speed
- speed sensors
- wheel
- signal
- species
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/02—Rotary gyroscopes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/50—Magnetic or electromagnetic sensors
- B60W2420/503—Hall effect or magnetoresistive, i.e. active wheel speed sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2422/00—Indexing codes relating to the special location or mounting of sensors
- B60W2422/70—Indexing codes relating to the special location or mounting of sensors on the wheel or the tire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/28—Wheel speed
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention relates to an interface device of a wheel speed sensor. According to the invention, various wheel speed sensors are not needed to be designed with different interface lines, but only by selecting options, a plurality of wheel speed sensors can be connected, thereby being suitable for braking systems of various wheel speed sensors for various vehicles.
Description
Technical field
The present invention relates to wheel speed sensors interface arrangement, is specifically not required to design different interfaces for various wheel speed sensors
Circuit, only easily connects the wheel speed sensors interface arrangement of multiple wheel speed sensors interfaces by option.
Background technology
Wheel speed sensors refer to the sensor for detecting vehicle wheel rotational speeds, the ABS that such as brake system is commonly used
(Anti-lock Brake System) etc..
ABS is that phenomenon when vehicle is brought to a halt to prevent wheel from being sagged is played and step on repeatedly brake function, and
The state of wheel skid is detected using wheel speed sensors.
At present the sophisticated brakes of exploitation is also the emergency situations such as bend or barrier occurring using wheel speed sensors
Lower detection wheel skid and the car body anglec of rotation are automatically controlled and are realized safe steering.
Wheel speed sensors according to type of drive be divided into it is various (such as：Active/Passive/PWM/VDA), wherein for master
Dynamic formula (Active) wheel speed sensors, having some automobile vendors specially to design at present can be with the electronics of sophisticated brake system
The special circuit of control device (ECU) connection, and have been enter into batch production.
But, if the wheel speed sensors of assembling are not inconsistent car type, need to redesign interface circuit, passed with meeting the wheel speed
The condition of sensor.
The background technology of the present invention is able to public affairs by KR published patent No. 10-2007-0067266 (2007.06.28)
Open.
The content of the invention
Technical task
It is an object of the invention to be improved to the problem, there is provided one kind is not required to distinguish according to wheel speed sensors species
Design interface circuit, but only select easily to connect the wheel speed sensors interface arrangement of multiple wheel speed sensors by option.
Technical scheme
The wheel speed sensors interface arrangement that one aspect of the present invention is related to, it is characterised in that include：Wheel speed sensors species is selected
Portion is selected, by magnitude of voltage output of the keen current segmentation input voltage of the wheel speed sensors species that need to connect to split；Flex point electricity
Stream test section, to be constituted according to the structure of the multiple current sheets of the wheel speed sensors species detection, detects from wheel speed sensing
The keen current of device species selector output；Wheel speed sensors interface portion, to the wheel speed sensors input current, according to
The keen current exports wheel signal from after the wheel speed sensors detection signal；Pulse counter portion, calculates from the wheel
The output pulse of the wheel signal of fast sensor interface portion output；Wheel speed sensors connecting portion, is directly connected to and the wheel
The wheel speed sensors of fast sensor interface portion connection；Wheel signal output section, will be defeated from the wheel speed sensors interface portion
The wheel signal for going out sends the external system of the demand wheel signal to；Microprocessor portion, receives from wheel speed sensing
The wheel signal of device interface portion output is processed for for brakes；Communication unit, by the pulse counter portion and institute
State the communication connection of microprocessor portion.
The wheel speed sensors connecting portion of the present invention is characterized in that, at least assembling four wheels according to the wheel count of vehicle
Fast sensor.
The present invention wheel speed sensors interface portion be characterized in that, inside possess four channel digital decoders and detect by
The keen current test section be acted upon according to four flex point ranks that channel is detected respectively after using its result as the car
Wheel signal output.
Beneficial effect
According to the present invention, it is not required to design different interface circuits for various wheel speed sensors, only selects easy by option
Ground connects multiple wheel speed sensors and is applied to the wheel speed sensors species that various vehicles are used.
Description of the drawings
Fig. 1 is the structure chart of the wheel speed sensors interface arrangement of the present invention；
Fig. 2 is the circuit schematic configuration diagrammatic illustration of keen current test section in Fig. 1；
Fig. 3 is the circuit schematic configuration diagrammatic illustration of wheel speed sensors interface portion in Fig. 1；
Fig. 4 is the circuit schematic configuration diagrammatic illustration of pulse counter in Fig. 1.
Description of reference numerals
101：Heart yearn portion 102：Wheel speed sensors species selector
103：Wheel speed sensors connecting portion 103a：Wheel speed sensors
104：Wheel signal output section 105：Microprocessor portion
101a：Keen current test section 101b：Wheel speed sensors interface portion
101c：Pulse counter portion 101d：Communication unit
101e：Charge pump section 201：Port Multiplier
202：Counter 203：Digital decoder
204：Overcurrent test section 205：Short-circuit detecting portion.
Specific embodiment
The wheel speed sensors interface arrangement of one embodiment of the invention is described in detail below in conjunction with the accompanying drawings.Here mistake
Cheng Zhong, the line illustrated in accompanying drawing is thick or size of component etc. be in order to definitely exaggerate with facility on illustrating, and under
It is that the function in the present invention is defined to state term, with user, the intention of fortune user or using some differences of convention, because
This must be defined based on the entire content of this specification to these terms.
Fig. 1 is the structure chart of the wheel speed sensors interface arrangement of the present invention.
As illustrated, wheel speed sensors interface arrangement is to be used in conjunction with various (or various) wheel speed sensors interface circuits
Circuit concentrate in together composition heart yearn portion 101.
The composition in heart yearn portion 101 includes：Keen current test section 101a；Wheel speed sensors interface portion 101b, to multiple wheels
Fast sensor 103a input currents or from wheel speed sensors 103a detection signals；Pulse counter 101c, calculates from wheel speed and passes
The pulse of the wheel signal (wheel speed signal) of sensor interface portion 101b output；Communication unit 101d, with SPI
(SerialPeripheral Interconnect) mode is with pulse counter 101c and microprocessor portion 105 implements to communicate；Electricity
Lotus pump 101e, is that specific function boosts cell voltage (V_BAT) for required voltage for heart yearn portion 101；Wheel signal is exported
Portion 104, the external system for sending the wheel signal that wheel speed sensors interface portion 101b is exported to the demand wheel signal is (such as：
EMS、TCS ECU)。
Additionally include：Wheel speed sensors species selector 102, is connected to heart yearn portion 101, selects the wheel speed that need to connect to pass
The species of sensor；Wheel speed sensors connecting portion 103, is directly connected to the wheel speed sensors 103a being connected with heart yearn portion 101；Microprocessor
Device portion 105, the wheel signal received from the output of heart yearn portion 101 is processed for for brakes.
Wheel speed sensors species selector 102 may decide that the wheel speed connected on the wheel speed sensors interface arrangement of the present invention
The configuration of sensor 103a.Wheel speed sensors species selector 102 is that segmentation voltage determines to use according to the magnitude of voltage of the segmentation
VDA wheel speed sensors still use PWM wheel speed sensors using active (Active) wheel speed sensors.Passed according to wheel speed
The corresponding magnitude of voltage of species of sensor 103 is set.Wheel speed corresponding with magnitude of voltage can be in advance stored in heart yearn portion 101 to pass
The information of the species of sensor 103a.Various wheel speed sensors 103a can also be set in addition to the wheel speed sensors 103a for illustrating
Magnitude of voltage it is selective.
The structure of wheel speed sensors connecting portion 103 can be at least to assemble four wheel speed sensors according to the quantity of wheel
103a.And the voltage of the species decision of the wheel speed sensors 103a selected according to wheel speed sensors species selector 102 is defeated
Enter to the wheel speed sensors 103a for being assemblied in wheel speed sensors connecting portion 103.
Microprocessor portion 105 uses the sophisticated brake system substituted in a large amount of productions of some automobile vendors at present
The part of 8bitMCU (Micro Control Unit), possesses embedded micro-processor and is substituted in the outside individually MCU of connection and connects
The signal for receiving wheel speed sensors 103a outputs is processed for for brakes.
The keen current test section 101a in heart yearn portion 10 is pair and magnitude of voltage phase selected by wheel speed sensors species selector 102
The keen current of the species wheel speed sensors 103a for answering is detected.
Fig. 2 is the circuit schematic configuration diagrammatic illustration of keen current test section in Fig. 1, as illustrated, passing through SPI
(SerialPeripheral Interconnect) determine wheel speed sensors 103a type after pair with the wheel speed sensors
The corresponding current sheet of 103a species is detected.
For example, ' WSStype=0 ' represents that outside wheel speed sensors 103a is intelligence sensor (Intelligent
Sensor), and the 4th layer of sensor current is detected.
For example, the current breakpoint of wheel speed sensors 103a can be carried out as follows setting.First, overcurrent
(overcurrent) flex point is assumed to be 40mA, and external impedance (Rload) is determined by sensor enterprise, it can be assumed that for 50
Ohm (Ω), normal voltage (VREF) is calculated according to external impedance (Rload) X keen currents (Ithresh4) mode, be exactly '
50 Ω X40mA=2V '.
Therewith, the species of wheel speed sensors 103a is selected according to wheel speed sensors species selector 102, corresponding mark is calculated
Quasi- voltage (VREF) can become knee voltage 4 (Vthresh4).The knee voltage 4 be voltage between WSS and WSLS i.e.
VREF becomes overcurrent (over current) flex point, remaining current breakpoint be by internal driving (such as 20k Ω, 10k Ω,
5.5k Ω, 4.5k Ω) distribution.Such as Vthresh3=20mA, Vthresh2=10mA, Vthresh1=4.5mA.
Another embodiment is that ' WSStype=1 ' represents that wheel speed sensors 103a is active wheel speed sensor
(ActiveSensor) sensor current of third layer, is detected.For example, the current breakpoint of wheel speed sensors 103 can enter as follows
Row is arranged.
First, overcurrent (over current) flex point is assumed to be 20mA, and external impedance (Rload) is looked forward to by sensor
Industry is determined, it can be assumed that for 120 ohm (Ω), normal voltage (VREF) is by external impedance (Rload) X keen currents
(Ithresh3) mode is calculated, and is exactly ' 120 Ω X 20mA=2.4V '.
Therewith, the species of wheel speed sensors 103a is selected according to wheel speed sensors species selector 102, is calculated corresponding
Normal voltage (VREF) then becomes knee voltage 4 (Vthresh3).The knee voltage 3 is the voltage between WSS and WSLS, i.e.,
VREF becomes overcurrent (over current) flex point, and remaining current breakpoint is by internal driving (example：20k Ω, 10k Ω, 5.5k
Ω, 4.5k Ω) distribution, such as Vthresh2=10mA, Vthresh1=4.5mA.
Fig. 3 is the circuit schematic configuration diagrammatic illustration for representing wheel speed sensors interface portion in Fig. 1, as illustrated, wheel speed sensing
The inside of device interface portion 101b possesses 4 channel digital decoders 203, is distinguished according to signal in keen current test section 101a detections
Four flex point ranks of detection are acted upon and export wheel signal (WSSOUT1/2/3/4) as its result.
And in order to the wheel speed sensors 103a input currents or signal for being connected to wheel speed sensors connecting portion 103, lead to
Cross each power supply (V_BAT) and overcurrent test section 204 and short-circuit detecting portion 205 identification signal input part broken string, short circuit and
Microprocessor 105 is sent to by SPI after the situations such as overcurrent.
And the voltage to wheel speed sensors 103a supplies is determined according to the species of wheel speed sensors 103a, this is determined
Voltage be transferred to wheel speed sensors 103a.
Pulse counter portion 101c is to calculate the wheel signal (WSSOUT1/2/ from the output of wheel speed sensors interface portion 101b
3/4) pulse.
Fig. 4 is the diagrammatic illustration of the circuit schematic configuration for representing pulse counter unit 101c in Fig. 1, as illustrated, wheel letter
The pulse of number (WSSOUT1/2/3/4) is input into counter 202 after being chosen one by Port Multiplier 201 as data signal.
And started counting up by being input into the enable signal (CNT_EN) of counter 202, carried out by carrying out signal (CNT_CLR).
Counter 202 is output as 8bit (WS_Cnt_OUT [7:0]) it is read by SPI.First signal (WS_OV_
Cnt it is) to inform that counter 202 is maximum, secondary signal (WS_FAIL_Cnt) is to enable signal (CNT_EN) and carry out signal
(CNT_CLR) when by ' high ' simultaneously.
Communication unit 101d and charge pump section 101e can also utilize known line construction, therefore no longer describe in detail.
Wheel signal output section 104 is the wheel letter for controlling to export wheel speed sensors interface portion 101b in heart yearn portion 101
Number it is sent to the EMS (Electronic Engine Management System) and TCS of the demand wheel signal
The wheel speed signal of (TractionControl System) ECU (Electronic Control Unit), can in input/output terminal
With functions such as built-in overvoltage, overcurrent and Thermal shutdowns (Thermal Shutdown).
As described above, the heart yearn portion 101 that the circuit that various wheel speed sensors interface circuits are used in conjunction with is concentrated in together
Can be with the monolithic morphosis of such as ASIC (Application Specific IC).Being constituted with monolithic can also be comprising outer
Contour road.And built-in existing MCU microprocessors do not need traditional MCU initialization times and the reaction time of reduction.And
The quantity of various accessories is reduced by ASIC, the number of fitting parts for being automatically inserted into the stage is also cost-effective therewith reducing.
Above example only to illustrate technical scheme, rather than a limitation；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to aforementioned each enforcement
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the scope of technical scheme described in the essence disengaging various embodiments of the present invention of appropriate technical solution.
Claims (3)
1. a kind of wheel speed sensors interface arrangement, including：
Wheel speed sensors species selector, the species of the wheel speed sensors that need to be connected using the magnitude of voltage output of segmentation；
Keen current test section, to be constituted according to the structure of the multiple current sheets of the wheel speed sensors species detection, detection is described
The keen current of the wheel speed sensors of the species corresponding to magnitude of voltage that wheel speed sensors species selector is selected；
Wheel speed sensors interface portion, to the wheel speed sensors input current, senses according to the keen current from the wheel speed
Wheel signal is exported after device detection signal；
Pulse counter portion, calculates the output pulse of the wheel signal from wheel speed sensors interface portion output；
Wheel speed sensors connecting portion, is directly connected to the wheel speed sensors being connected with the wheel speed sensors interface portion；
Wheel signal output section, sends the wheel signal exported from the wheel speed sensors interface portion to the demand wheel
The external system of signal；
Microprocessor portion, the wheel signal received from wheel speed sensors interface portion output is processed for for braking system
System；
Communication unit, the pulse counter portion and the microprocessor portion are communicated to connect.
2. wheel speed sensors interface arrangement according to claim 1, it is characterised in that
The wheel speed sensors connecting portion is at least to assemble 4 wheel speed sensors according to the wheel count of vehicle.
3. wheel speed sensors interface arrangement according to claim 1, it is characterised in that
The inside of the wheel speed sensors interface portion possesses 4 channel digital decoders and detects by the keen current test section root
It is believed that 4 keen currents that road is detected respectively are exported after being acted upon using its result as the wheel signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0004042 | 2012-01-12 | ||
| KR1020120004042A KR101882246B1 (en) | 2012-01-12 | 2012-01-12 | Apparatus for interface of wheel sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103204151A CN103204151A (en) | 2013-07-17 |
| CN103204151B true CN103204151B (en) | 2017-04-26 |
Family
ID=48751618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210568554.2A Active CN103204151B (en) | 2012-01-12 | 2012-12-25 | Interface device of wheel speed sensor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101882246B1 (en) |
| CN (1) | CN103204151B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102454009B1 (en) * | 2015-11-03 | 2022-10-14 | 현대모비스 주식회사 | Wheel sensor interface apparatus |
| KR102454021B1 (en) * | 2016-04-15 | 2022-10-14 | 현대모비스 주식회사 | Wheel sensor interface apparatus |
| CN110347081B (en) * | 2019-07-15 | 2021-03-16 | 天津英创汇智汽车技术有限公司 | Electronic control device for vehicle, and method for controlling vehicle running state |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477142A (en) * | 1994-02-22 | 1995-12-19 | Delco Electronics Corporation | Variable reluctance sensor interface using a differential input and digital adaptive control |
| US20070103145A1 (en) * | 2003-10-10 | 2007-05-10 | Gschossmann Guenther | Electronic circuit configuration for optionally connecting rotary speed sensors, especially in commercial vehicles |
| CN201628720U (en) * | 2010-01-05 | 2010-11-10 | 东风电子科技股份有限公司 | Vehicle speed signal converter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101186824B1 (en) * | 2007-10-29 | 2012-10-02 | 주식회사 만도 | A Safe Unit of Vehicle |
| KR101198750B1 (en) * | 2008-04-23 | 2012-11-12 | 주식회사 만도 | Vehicle control apparatus |
-
2012
- 2012-01-12 KR KR1020120004042A patent/KR101882246B1/en active IP Right Grant
- 2012-12-25 CN CN201210568554.2A patent/CN103204151B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477142A (en) * | 1994-02-22 | 1995-12-19 | Delco Electronics Corporation | Variable reluctance sensor interface using a differential input and digital adaptive control |
| US20070103145A1 (en) * | 2003-10-10 | 2007-05-10 | Gschossmann Guenther | Electronic circuit configuration for optionally connecting rotary speed sensors, especially in commercial vehicles |
| CN201628720U (en) * | 2010-01-05 | 2010-11-10 | 东风电子科技股份有限公司 | Vehicle speed signal converter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101882246B1 (en) | 2018-07-26 |
| CN103204151A (en) | 2013-07-17 |
| KR20130093814A (en) | 2013-08-23 |
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