Categorization：Product Information
Sweep the code to download homework help to search for answers to questions in one search!
Related ReadingsThe Function of the SensorsThe function of the sensors is as follows: 1, intake pressure sensor: reflecting changes in the size of the absolute pressure in the intake manifold, is to provide the ECU (engine electronic control unit) to calculate the injection duration of the reference signal; 2, throttle position sensor: measuring the angle of the throttle open, provided to the ECU as a fuel break, control of the fuel / air ratio, the ignition advance angle correction of the reference Signal; 3, intake air temperature sensor: detection of intake air temperature, provided to the ECU Zhou Junxian Certified Specialist 2020-08-31 Sensor role of the role of the sensor is as follows: 1, intake pressure sensor: reflecting changes in the size of the absolute pressure in the intake manifold is to the ECU (engine electronic control unit) to provide the calculation of the injection duration of the reference signal; 2, throttle position sensor: measure the angle of throttle opening, provide the ECU as a fuel break, control fuel / air ratio, ignition advance angle correction of the reference signal; 2, throttle position sensor: measure the angle of throttle opening, provide the ECU as a fuel break, control fuel / air ratio, ignition advance angle correction of the reference signal. Throttle open angle, provided to the ECU as fuel break, control fuel / air ratio, ignition advance angle correction of the reference signal; 3, intake air temperature sensor: detection of intake air temperature, provided to the ECU Wang Feifei Certified Specialist 2020-08-27 sensor is bad on the car what is the impact of the vehicle sensor damage will lead to the car center control can not accept the relevant information about the vehicle, resulting in the owner in the driving process Cannot understand the car condition in time. Vehicle sensor is the input device of the automobile computer system, it will run the car in a variety of working condition information, such as speed, temperature of various media, engine running conditions, etc., into electrical signals to the computer, so that the engine is in the best working condition!
Sweep the code to download homework help to search for answers to questions in one search!
Since the thermistor is a resistor that generates a certain amount of heat when current flows through it, the circuit designer should make sure that the pull-up resistance is large enough to prevent the thermistor from over-heating itself, or else the system measures the heat emitted by the thermistor rather than the temperature of the surroundings.
The energy consumed by a thermistor as a function of temperature is expressed in terms of the dissipation constant, which refers to the number of milliwatts required to raise the temperature of the thermistor by 1°C above the ambient temperature. The dissipation constant varies depending on the package of the thermistor, the pin specification, the encapsulation material and other factors. The amount of self-heating and the size of the current-limiting resistance allowed by the system is determined by the measurement accuracy, and a measurement system with a measurement accuracy of ±5°C can withstand a larger amount of thermistor self-heating than a measurement system with an accuracy of ±1°C. It should be noted that the resistance value of the pull-up resistor must be calculated to limit the self-heating power dissipation over the entire measurement temperature range. After the resistance value is given, the power dissipated varies at different temperatures due to the change in resistance of the thermistor. Sometimes it is necessary to calibrate the input of the thermistor in order to obtain the proper temperature resolution, Figure 3 shows a circuit that extends the 10 to 40°C temperature range to the entire 0 to 5V input interval of the ADC. The operational amplifier output equation is as follows: Once the input calibration of the thermistor is complete, a graphical representation of the actual resistance versus temperature is available
As far as we know, the water level sensor is also a pressure sensor to measure the water level. He used foreign advanced isolated diffusion silicon sensitive components or ceramic capacitance pressure sensitive sensors, the static pressure is converted to an electrical signal, and then after temperature compensation and linear correction, into a standard electrical signal (generally 4 ~ 20mA/1 ~ 5VDC). The principle of the water level sensor is: the water level sensor in the container, the felt water level signals transmitted to the controller, the computer in the controller will be measured water level signals and set signals for comparison, resulting in deviation, and then according to the nature of the deviation, to the water supply motorized valve to send out the "open", "closed According to the nature of the deviation, the electric water supply valve will issue "open" and "close" commands to ensure that the container reaches the set water level. After the water feeding program is completed, the computer in the temperature control section issues an "on" command to the motorized valve supplying the heat medium, and the system begins to heat the water in the container. At the set temperature, the controller issues the command to close the valve. Controller to issue the order to close the valve, cut off the heat source, the system into the heat preservation state. Programming process to ensure that the system does not reach a safe water level, the control of the heat source of the electric control valve does not open the valve, thus avoiding the loss of heat and the occurrence of accidents. The water level sensor can generally be used in the city power supply, water conservancy and hydropower, metallurgy, petrochemical and so on. Widely used in water plants, refineries, chemical plants, glass factories, sewage treatment plants, high-rise water supply systems, reservoirs, rivers, oceans and other water supply pools, distribution pools, water treatment pools, water wells, water tanks, water tanks, oil wells, oil tanks, oil tanks and a variety of liquid static and dynamic level measurement and control.
“Without the consent or authorization of this site, no one shall reproduce, reprint, distribute, cite, change, broadcast or publish the content in whole or in part in any form, nor shall there be any other violation of the copyright of this site.
