Các cảm biến đo tốc độ ô tô

Read switch typePhototransistor Electromagnetic pickup type Rotor Speed sensor Output shaft Rotor Coil Core Speed sensor Magnet Engine ECU... 20-Pole type speed sensor 4 Magnetic ting MR

Read switch type

Phototransistor

Electromagnetic pickup type

Rotor

Speed sensor Output shaft

Rotor Coil Core Speed sensor

Magnet

Engine ECU

Cảm biến kiểu lưỡi gà

-Transmission output shaft

and is driven by the drive

gear of the output shaft.

The sensor is built-in and

consists of a HIC (Hybrid

Integrated Circuit) with a

MRE and magnetic rings

20-Pole type speed sensor

4 Magnetic ting MRE

Comparator

Magnetic ring (rotating) N S S

2 4

MRE output

Comparator output

Speed sensor output

1012V0V

Output voltage type

Speed sensor

Combination meter

SPD

to other ECU(s)

ECU

5V

5V

or 12V

The MRE resistance changes

depending on the direction of

the magnetic force applied to

the MRE When the direction of

the magnetic force changes

according to the rotation of the

magnet attached to the

magnetic ring, the MRE output

becomes an AC waveform as

shown in the illustration The

comparator in the sensor

converts this AC waveform into

a digital signal and outputs it

The waveform frequency is

determined by the number of

poles of the magnets attached

to the magnetic ring There are

two types of magnetic rings,

20-pole type and 4-pole type,

depending on the vehicle

model The 20-pole type

generates a 20-cycle waveform

(in other words, twenty pulses

for each rotation of the

magnetic ring), and the 4-pole

type generates a 4-cycle

waveform

Các cảm biến đo tốc độ quay của trục

Crankshaft / Camshaft position sensor

1 2 3 4

S N

0

1 2 3

4 2

+ -

G signal timing rotor

NE signal timing rotor

Bố trí cảm biến Ne ở bánh đà, cảm biến G ở đầu trục cam

0

Crankshaft position sensor

Camshaft position sensor

Crankshaft position sensor Camshaft position sensor

Các cảm biến đo dịch chuyển góc

- Cảm biến đo góc quay vành tay lái

- Cảm biến vị trí (độ mở) bướm ga

Cảm biến đo góc quay vành tay lái

Slider (contact for IDL signal)

Closed

OpenResistor

Slider (contact for VTA signal)

Throttle position sensor

E2IDLVTAVC

IDLVTAVC

Throttle position sensor Engine ECU

Output characteristics (VA)

Water Temperature Sensor/ intake Air Temperature Sensor

Temperature C(F)

THW

E2E1

THW (THA)

Water temperature sensor (Intake air temperature sensor)

Engine ECU

5V1

Các cảm biến đo gia tốc

-Cảm biến đo gia tốc chuyển động thẳng -Cảm biến đo gia tốc theo phương ngang

Accelerator Pedal Position Sensor

(1/2)

Accelerator pedal position

sensor

Sensor operational range

Pedal operational range

Pedal operational range

VPA2

VPA

1.Linear type

Accelerator Pedal Position Sensor

(2/2)

Hall IC

Magnet

Accelerator pedal arm

Accelerator pedal position

sensor

Magnet

Magnet

Hall C Hall C

VPAEPAVCPAVPA2EPA2VCP2

EngineECU

Fully closeAccelerator pedal depressed angle

• Accelerator Pedal Position Sensor

Hall ICs

Magnets

Hall IC(for Throttle position sensor)

Throttle valve fully open

Throttle valve opening angle

2.Hall element type

VTA2

VTA1

The new Triaxis™ current sensor MLX91205 is a single axis integrated magnetic sensor based

on the Hall effect It produces an analog, ratio-metric output voltages proportional to the applied magnetic field parallel with the chip surface

The circuit is fabricated using a standard CMOS process The additional ferromagnetic layer (Triaxis™ or IMC™=Integrated Magnetic Concentrator) that is added in a simple post-

processing step, amplifies the magnetic field and concentrates it on the Hall elements

Therefore, the circuit features very high magnetic sensitivity, low offset and low noise.

The MLX91205 is ideally suited for current sensing in automotive and industrial environments

Two different versions with different magnetic ranges are available

Hall Effect Magnetic field

(Magnetic flux density)

Output voltage

VH(mA)

0 Magnetic flux density

Output characteristics [V]

Các cảm biến đo khoảng cách, chuyển dịch

5V

Oxygen Sensor

(1/1)Protective cover

Ambient air

Exhaust gas

Flange

PlatinumZirconia elementPlatinum

Theoretical air-fuel ratio

Các cảm biến đo mô men xoắn

Các sơ đồ nối ghép cảm biến với ECU

1 Nối ghép cảm biến kiểu biến trở với ECU

Microprocesso r

A

5V

2 Nối ghép cảm biến kiểu điện trở nhiệt với ECU

(Switch used)

Sensors

3 Nối ghép cảm biến sử dụng transitor với ECU

Stop lamp switch

Microprocessor Stop lamp

4 Nối ghép tín hiệu các chuyển mạch với ECU