Categorization：Product Information
Transmission Time Laser Distance Sensor Working Principle Transmission Time Laser Sensor Working. Transmission time laser sensors must determine the transmission time extremely accurately because the speed of light is so fast. To achieve a resolution of 1 mm, the electronic circuitry of the transmission time distance sensor must be able to discriminate between extremely short periods of time, which is an excessive demand on the electronics and too expensive to realize. But today's inexpensive transmission time laser sensors cleverly avoid this obstacle and utilize a simple statistical principle, the law of averages, to achieve a resolution of 1mm with a guaranteed response time.
The range of temperature sensors is so large that I don't know which one the owner wants to know. Briefly: 1, expansion thermometer: the use of temperature-sensitive liquid by thermal expansion principle work 2, RTD: is based on the principle of resistance of the metal wire with the change in temperature work. 3, thermocouple: two different materials of the wire or semiconductor A and B welded together to form a closed loop, when the wire A and B two contacts 1 and 2 between the existence of a temperature difference between the two, the two will produce an electromotive force between them, and therefore in the circuit Formation of a certain size of the current, a phenomenon known as the thermoelectric effect. Thermocouple is to use this effect to work.
The working principle of the Hall sensor: in the rotating body equal parts plus magnet, the sensor is fixed to the magnet, when rotating, the sensor and the magnet overlap, inductance once, the output pulse jumps, the faster the rotational speed, but also the higher the frequency output, the frequency of the output level is directly proportional to the rotational speed, measured frequency is measured the rotational speed, but also can be converted into a frequency voltage or current signals. The speed sensor is a sensor that converts the rotational speed of a rotating object into a power output. RPM sensors are indirect measurement devices that can be manufactured mechanically, electrically, magnetically, optically, and by hybrid methods. The core component is a magnetoresistor as the detecting element, and a new signal processing circuit reduces noise and improves functionality. By comparing with the output waveform of other types of tooth speed sensors, the error of the measured speed is very small and the linear characteristics have good consistency, the sensing object is magnetic material or magnetically conductive material, such as magnetic steel, iron and electrical steel, etc.
Hall Current and Voltage Sensors Principle of Operation
Direct Measurement Hall Current Sensors
The magnetic flux generated by the primary current Ip is gathered in the magnetic circuit and detected by the Hall device as a Hall voltage signal, which is amplified by an amplifier and which accurately reflects the primary current.
Magnetic Balance Hall Current Sensors
The magnetic flux generated by the primary current Ip is balanced by the flux generated by the secondary current Is through the secondary coil, which is generated by the amplification of the Hall voltage. The secondary current Is accurately reflects the primary current.
Magnetic Balance Hall Voltage Sensors
The primary voltage Vp is converted to a primary current Ip through the primary resistor R1, and the flux generated by Ip is balanced by the flux generated by the secondary current Is through the secondary coil, which is generated by the amplified Hall voltage. The secondary current Is accurately reflects the primary voltage.
Hall Current and Voltage Sensor Characteristics
◎ Direct Measuring Hall Current Sensor (50A......10000A)
Ⅰ, measurement frequency: 0......50KHz
Ⅱ, reaction time: ＜7uS
Ⅲ, Linearity: 1%
Ⅳ, less power consumption of power supply
◎ Magnetic Balance Hall Current Sensor (1A......1000A)
Ⅰ, measurement frequency: 0......150KHz
鈪, precision:
Pressure touch sensor, sensor sensing, feedback signals to the control system, the control system to make judgments and instructions to complete the design function of the sensor (English name: transducer/sensor) is a detection device, can feel the measured information, and can feel the information, according to a certain law, transformed into electrical signals or other required forms of information output to meet the information transmission, processing, storage, display, recording and control requirements. It can transform the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control. The characteristics of the sensor include: miniaturization, digitalization, intelligence, multifunctionality, systematization and networking. It is the primary link to realize automatic detection and automatic control. The existence and development of sensors allow objects to have senses such as touch, taste and smell, so that objects slowly become alive. They are usually divided into ten major categories according to their basic sensing functions such as heat-sensitive elements, light-sensitive elements, gas-sensitive elements, force-sensitive elements, magnetic-sensitive elements, moisture-sensitive elements, acoustic-sensitive elements, radiation-sensitive elements, color-sensitive elements and taste-sensitive elements.
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