Infrared dual source detector principle

An infrared dual source detector is a device that converts incident infrared radiation signals into electrical signals. It uses infrared thermal effects and photoelectric effects (dual sources) to detect infrared radiation.


Infrared dual-source detectors convert incident infrared radiation signals into electrical signal output devices. Infrared radiation is an electromagnetic wave with a wavelength between visible light and microwave, which is not noticeable to the human eye. To perceive the existence of such radiation and measure its strength, it must be converted into other physical quantities that can be perceived and measured. In general, any effect caused by infrared radiation on an object, as long as the effect can be measured and sensitive enough, can be used to measure the intensity of infrared radiation. Modern infrared detectors use mainly infrared thermal effects and photoelectric effects. The output of these effects is mostly electricity, or it can be converted into electricity by an appropriate method. An infrared detector has at least one object that is sensitive to infrared radiation, called a response element. In addition, it also includes a response element holder, a sealed housing, and a window that transmits infrared radiation. Sometimes it also includes refrigeration parts, optical parts and electronic parts.

The electric automobile self starter or best known as the starter is the device chiefly responsible for carrying out the processes involved in starting vehicles up. 

The Car Starter works by harnessing the power of the automotive battery. Once the key is inserted into the ignition switch and then turned to the start position, a tiny amount of current flow through the neutral safety switch and into the starter relay or Starter Solenoid. The Starter Motor then cranks the engine to enable the piston to create a suction drawing in the fuel and air mixture into the cylinder. The engine will then start as the spark created by the ignition system will ignite this mixture. 

Turning on the ignition switch allows a small amount of power from the battery to flow to the solenoid above the starter. When the low-current power from the starting battery is applied to the solenoid, oftentimes with a key-operated switch, it releases a small pinion gear on the starter motor's shaft and meshes it with the ring gear on the flywheel of the engine. 
The solenoid is also responsible for closing out high-current contacts for the starter motor and it then starts to run. Once the engine starts, a key-operated switch is activated and a spring in the solenoid assembly pulls the pinion gear away from the ring gear which then causes the starter motor to stop. Modern Auto Starter motors are equipped with a "bendix," a gear and integral freewheel, or overrunning clutch, thereby allowing the flywheel to automatically disengage the pinion gear from the flywheel when the engine starts.

Bosch Starter

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