As the "sensory organ" and "nerve" of the spacecraft, sensors are distributed in all key parts of the spacecraft, which is an effective means to ensure measurement, accurate measurement, correct prediction and diagnosis, and ensure the success rate of the mission. Such as control system, power system, propellant utilization system, additional system, telemetry system in launch vehicle, fault detection and diagnosis system in manned spacecraft, cabin environment control and life support system, escape and rescue system, astronaut extravehicular activity support system and re-entry landing system. It is inseparable from the accurate detection of the working state of the key components of the spacecraft by sensors. Due to the particularity of the on-orbit environment in the confined space of manned spacecraft cabin, the on-orbit environmental monitoring sensor is very important for the safety of astronauts. The U.S. International Space Station (ISS) successfully avoided the fire tragedy of ISS many times by relying on the fire warning of high-sensitivity sensors. During the second orbit change of spacecraft, it is necessary to provide propulsion for changing the flight direction. High-precision pressure sensor is used to measure the pressure of fuel tank, which is the key equipment to control ignition and start orbital transfer flight. Once the sensor's measurement accuracy is out of tolerance or fails, it will directly lead to the failure of orbit transfer. In 20 10, Russian Proton -M rocket launched three GLONASS-M navigation satellites. Because the fuel level sensor is out of tolerance, the rocket's "head" is overweight, which leads to the rocket's lack of speed at the end of flight and its failure to enter the orbit correctly, resulting in all three navigation satellites being buried in the Pacific Ocean. Visible sensor plays an important role in space equipment.
For more information, please consult Meiji. Meiji has been developing photoelectric sensing technology for more than ten years. At present, many related invention patents have been obtained, such as autonomous anti-interference algorithm, single-wire communication technology, digital temperature compensation technology, multi-pulse technology, door and window technology, parallel installation anti-interference technology, differential delay amplification technology, built-in optical seam technology, anti-static technology and so on. At the same time, it has background suppression technology, which can be applied to photoelectric, reflective photoelectric, various wide-spot and narrow-spot light sources, and industrial photoelectric products with various spots and wavelengths. Based on the photoelectric platform, Meiji realized the smooth mass production of industrial lidar in CMOS triangle laser ranging, background suppression and TOF technology. Thousands of photoelectric SKUs have formed a relatively comprehensive matrix of photoelectric sensing products.