How to connect the speed sensor with three wires?

1, ABS sensor is a wheel speed sensor, which is used to detect wheel speed. It is actually a two-wire electromagnetic coil.

2. There are three-wire and four-wire throttle position sensors; The third wire is a sliding rheostat, and the fourth wire has a pair of empty contacts besides the sliding rheostat.

3. The intake pressure sensor is generally composed of three wires, two of which constitute the power supply circuit and the other is the signal wire.

Generally speaking, the air temperature sensor is a two-wire system, one for power supply and the other for signal line.

5. Coolant temperature sensors have 2-wire system, 3-wire system and 4-wire system. 2-wire system, with one power supply and the other signal wire connected to ECU；; Three-wire system, one power supply, one signal line connected to ECU, and one water thermometer connected to instrument panel by signal line; 4-wire system, two of which are connected to ECU, and the other two are connected to the water thermometer on the instrument panel.

6. Crankshaft speed position sensor, including magnetoelectric sensor and Hall sensor. Magnetoelectricity has two-wire system and three-wire system, and both wires of the two-wire system are signal wires connected to ECU; ; In the 3-wire system, two are signal wires and the other is signal shielding wire. Hall type is a 3-wire system, with two power supply loops and a new signal wire.

7. Camshaft phase sensor is the same as crankshaft speed position sensor, including magnetoelectric sensor and Hall sensor. Knock sensors have single-wire, double-wire and three-wire systems. The single-wire system is that the signal wire is connected to ECU and the grounding wire is grounded; One of the two-wire systems is a signal wire connected to the ECU, and the other is a ground wire also connected to the ECU; One of the 3-wire systems is a signal wire connected to the ECU, one is a grounding wire also connected to the ECU, and the other is a signal shielding wire.

Extended data parameter description

note:

1, gear size parameter: gear outer diameter: 99.3mm；; Number of teeth: 60; Modulus: 1.57 (The above dimensions are just an example, and the modulus can be 0.5 to 2. )

2. When installing the sensor, make the connecting line between the tail red LED and the root of the lead-out wire perpendicular to the gear plane.

3. The outgoing line of the sensor is: brown is the power cord; Black is the ground wire; Blue is the signal output line.

Because of its convenient installation and good versatility, it is widely used in various fields. Especially in low-speed or ultra-low-speed non-contact detection, it has the characteristics that other sensors can't achieve, which fills the gap in the speed measurement range of magnetoelectric sensors in China.

50-5000 Hz. (The detection distance is only 0.5mm；; Proximity switches cannot detect small die teeth); Hall switch can be replaced directly in non-contact detection of medium and high speed.

Baidu encyclopedia-speed sensor