Hello, what does the Hall sensor G40 do

Sensor is a kind of detection device, which can feel the measured information, and can transform the felt information into electrical signals or other required forms of information output according to a certain law, so as to meet the requirements of information transmission, processing, storage, display, recording and control. For more professional answers, please contact China Daheng (Group) **** Beijing Image Vision Technology Branch (hereinafter referred to as: Daheng Image), product service:

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Hall sensor is a kind of magnetic field sensor made according to the Hall effect. Hall effect is a kind of magnetoelectric effect, and various Hall elements made by using this phenomenon are widely used in industrial automation technology, detection technology and information processing. The Hall effect is a fundamental method for studying the properties of semiconductor materials.

The Hall coefficient measured by the Hall effect experiment can determine the conductive type, carrier concentration and carrier mobility of semiconductor materials.

According to the Hall effect, people use semiconductor materials to make components called Hall elements. It has the advantages of magnetic field sensitivity, simple structure, small size, wide frequency response, large output voltage change and long service life, so it is widely used in the fields of measurement, automation, computer and information technology.

1. Throttle position sensor.

Function: The throttle position sensor is to monitor the size of the throttle opening angle, determine the idle speed, full load and acceleration and deceleration conditions, and implement the throttle opening state.

Corresponding various injection volume control. Failure effects: Idle speed fluctuates high and low, or causes the phenomenon of speeding.

2. Intake valve pressure sensor.

Function: The intake pressure sensor is to provide engine load information, i.e. through.

In the case of pressure measurement on the air intake pipe, the air intake into the engine is indirectly measured, and then the air intake volume is converted into an electrical signal and provided to the computer through the internal circuit. Failure effect: causing the engine to be difficult to start, or idle unstable.

3. Inlet air temperature sensor.

Purpose: Provides air temperature information for correction of fuel injection and ignition timing. Failure effect: low idle speed, easy to stall.

4. Crankshaft angle sensor.

Function: It is to provide speed and crankshaft phase information, and provide reference points for fuel injection timing and ignition timing. Failure effects: The engine cannot be started or the engine suddenly stalls after starting.

5. Coolant temperature sensor.

Function: It monitors the engine coolant temperature and converts it into a voltage signal to the computer, and the ECU controls the amount of fuel injection, ignition timing and idle speed according to this signal. Effect of failure: low idle speed.

6. Oxygen sensor.

Function: It is the main component that provides mixer concentration information, is used to correct the fuel injection volume, realizes the closed-loop control of the air-fuel ratio, and ensures that the actual air-fuel ratio of the engine is close to the theoretical air-fuel ratio. Failure effects: unstable idle speed, excessive consumption.

7. Knock sensor.

Function: It is to provide detonation information, which is used to correct the ignition timing and real-detonation closed-loop control. Failure effect: When the detonation is about to occur, the detonation signal cannot be provided, and the computer cannot receive the signal "peak" and cannot reduce the ignition advance angle, and the detonation occurs.

8. Three-way catalytic converter.

Function: The three-way catalytic converter is installed in front of the muffler in the exhaust pipe, which can reduce the content of three pollutants in the exhaust gas (carbon monoxide CO, unburned carbon oxide HC and oxide NOX) at the same time, when the air-fuel ratio of the engine is close to the theoretical air-fuel ratio, the three-way catalytic converter has the highest conversion efficiency, when the high temperature of 300 800 harmful gases undergoes oxidation and reduction reaction through the precious catalysis attached to the ceramic monomer through the three-way catalytic converter center, and is converted into harmless gas. Failure Impact:

The exhaust gas discharged is not up to standard.