#crank position sensor

[automotiveamerican]

Testing a Crank Position Sensor with the Hantek 1008C

When testing a crankshaft position sensor (CKP) with a Hantek 1008C oscilloscope, you’re typically looking to analyze the sensor’s signal waveform to ensure it’s functioning correctly. Here’s how you can approach testing a CKP sensor using the Hantek 1008C: 1. Identify the Type of Crankshaft Position Sensor There are two main types of CKP sensors, and their signals differ: Magnetic (AC Signal)…

Testing a Crank Position Sensor with the Hantek 1008C

[carsensors]

The role of the crankshaft sensor

An engine ignition time ( say a little simple, it is the moment of spark ignition , the corresponding crankshaft position ) , is to be very accurate ( correct to say that there is a range in which the crankshaft to an angle within the range requiring Fireworks plug ignition , not to this position the crankshaft , the ignition spark plug , Crank Position Sensor the engine is possible that the normal work ) , the carburetor before the car, with a mechanical power switch to control the spark plug , Just go to the crankshaft position switches , spark plugs will ignite. . . Now all electronically controlled , and , then , go to the computer you want to know what the crankshaft angle ( position ) , you can only think of ways to engage an electrical signal , let the computer know what angle to the crankshaft in the end , but to the best one ignition position , the computer controlled ignition . . . . Second, the crankshaft position only to have strict requirements ignition timing , fuel injection is relatively minor, because , injection slowly earlier , the impact of work on launching fee is not great, but , if ignition is Camshaft Sensor not normal , then a great impact . Third, there is a common crank sensor , electromagnetic ( on a side of the crankshaft gear . Front chainring ) , a simplified physical model is a small permanent magnet generator , it is the most common kind , ,,, , the other type of photoelectric ( a small disc , open at the many small holes in the upper and lower plate , mounting points corresponding to the device and the photosensitive device , a light emitting element , the light emitted when the circle hole position to the disk , the light shine on the photosensitive member following the reception of light ) , light is actually a simplified model of the battery , there is a Hall sensor . . , Swiss road running car , more than 95 % of all first .

[carsensors]

Point of the pressure sensor installed

Pressure sensors are most commonly used in industrial practice of a sensor , commonly used in various industrial automation environment, involving water utilities , rail transportation, intelligent buildings, production automation , aerospace , military, petrochemical, oil, electric power, shipbuilding , machine tools, pipes and many other industries. Pressure is the industrial production of the important parameters , in order to ensure the normal operation of the production , the pressure must be monitored and controlled. Crank Position Sensor are the most common industrial practice of a sensor . To make sure you buy a pressure sensor products meet site requirements, installation can be carried out with reference to the following : 1, please read carefully before installing Auto Temperature Sensor product manual, and check the product information . 2, the pressure sensor is installed in ventilated, dry and free of corrosion , cool place , such as the outdoor installation shield should be added , avoid sunlight and rain , to avoid pressure sensor performance degradation or malfunction . 3 , the pressure sensor is a precision instrument , installation avoid strong shocks, beaten . 4, according to the correct installation and connection wiring diagrams . 5 , pay attention to protect the pressure sensor pigtail . In the industrial field installation , it is recommended to use a metal pipe protection or overhead . Do not loose cable terminations sealing nut , to avoid moisture. 6 , clean interface and a Engine Water Temperature Sensor pressure impulse hole, you should use trichlorethylene or alcohol injection impulse hole and gently shake , and then pour the liquid , so repeatedly . Prohibit the use of any apparatus into the impulse hole to avoid damage the pressure sensor sensitive core .

[carsensors]

Silicon pressure sensor has some technical problems

Pressure sensors in automotive vehicles , barometers , medical equipment , wind control, air flow meter, respirators and ventilators , etc. silicon Crank Position Sensorare widely used . The temperature of the silicon pressure sensor chip is very large, mainly affecting the zero and sensitivity drift generating root cause : In the production process , the composition of the four Wheatstone bridge resistance of the surface doping concentration and the diffusion resistance of the width can not be completely the same, so that the resistance of the four resistors are not exactly equal, the temperature coefficient not equal , resulting when the input pressure is 0 , the bridge output is not 0 , and the output changes with temperature drift , i.e. 0:00 temperature drift ; thermal behavior of the semiconductor piezoresistive coefficient variation with temperature , causes Crankshaft Sensor drift with temperature . In addition, after the procedure and the glass chip static packaging , adhesives , silicone and cavity design will add temperature. In summary factors, packaged pressure sensor zero offset compensation includes calibration zero temperature drift compensation and sensitivity temperature compensation.Generally in the bridge arm piezoresistive pressure sensor or thermistor series and parallel resistors and other methods to achieve the already packaged piezoresistive pressure sensor temperature compensation . The drawback of this method is to be used only for the case of low precision . As compensation resistor and the pressure sensor Wheatstone bridge resistivity inconsistent test is also more difficult, so no matter what the temperature compensation methods can not achieve good results , for demanding applications such compensation is difficult to achieve . Therefore, the pressure sensor temperature compensation has been troubled by the user's problem , and also the research and production of pressure sensors is a key technical issue.Followed by the micro-pressure , low pressure sensor manufacturing technology and process is relatively high, are involved in manufacturing equipment is very expensive. Low range pressure sensor market is now relatively small, expensive. In contrast, high pressure range sensor manufacturing costs are relatively low . Therefore, the micro-pressure , low pressure sensor accuracy and price is user concern.Finally, Engine Water Temperature Sensorwafer packaging technology has become a bottleneck in production . Therefore, the reliability of the pressure sensor package is user concern arises . Now more and more customers tend to choose capacitive pressure sensor .

[carsensors]

Dispenser which is equipped with a temperature sensor

China's economic development and international energy issues tight, people's environmental awareness has increased, so many people at the time of purchase of energy-saving and environmental protection as a very important indicator. Drinking is also our frequently used to provide drinking water and convenient. We do not know it, which is equipped with a small fountain Crank Position Sensor. The traditional water dispenser thermistor temperature control, water dispensers will be heated from room temperature to the boiling water, temperature control switches off, stop heating; slow decline after the temperature, when the temperature drops to a certain time, the thermostat switch is closed, then and continue to heat to a boil, again and again. If you forget the power off after drinking the water, it will make the water boil again, not only a waste of energy, but also easy to form containing heavy metals, arsenic and other harmful substances, "thousands of boiling water." The new chip dispenser combination for energy saving water dispenser designed a temperature control system, to make up for these shortcomings dispenser. Sensors temperature control system has good stability, easy to operate, cost-effective features, will have broad prospects for development. New dispenser using temperature sensors and microcontrollers to solve the waste of energy users Crank Sensor many drinking water after boiling, environmentally friendly and ensure that the user's health. So the new drinking fountains will be more loved by customers is not only home users, public places will use a new type of water fountains. This also is 0, the application of a good prospect.

[carsensors]

The working principle of resistance strain gauge

Metal resistance strain gauge works adsorbed on the substrate material with the mechanical deformation strain resistance arising from the change in resistance of the phenomenon, Crankshaft Position Sensor commonly known as resistance strain effects. Metal conductor resistance value can beexpressed by the following formula:The formula: ρ - metal conductor resistivity (Ω · cm2 / m)S - conductor cross-sectional area (cm2) L - length of the conductor (m)We wire strain gauge, for example, when the metal wire by the external force, its length and cross-sectional area will change, from the above formula can be easily seen, the resistance changes that would occur if the wire by external force and elongation, its length increases, the cross-sectional area is reduced, the resistance value will increase. When the wire whenCrank Position Sensorby external force, the length decreases while the cross-section increases, the resistance value will decrease. As long as the measured increase in resistance change (typically the voltage across the measuring resistor), you can get the wire strain strain situation

[carsensors]

Piezoresistive force sensor in understanding when we first know about this element resistance strain gauges

Piezoresistive force Crank Position Sensor in understanding when we first know about resistance strain gauges such elements . Resistance strain gauge is a strain on the DUT will be converted into an electrical signal variation sensitive device . It is a piezoresistive strain Engine Cooling Temperature Sensor of the main components . Resistance strain gauge is the most widely used metal resistance strain gauges and semiconductor strain gauges two kinds . Metal resistance strain gauges have filamentous strain gauge and the metal foil strain gages two kinds . The strain gauge is usually via a special adhesive binder tight mechanical strain is generated on the substrate , the force occurs when the substrate stress , the resistance strain gauge is generated with deformation, the resistance strain gauge is changed , so that the the voltage across the resistor changes . The strain gauge force generated when the change in resistance is usually small , it typically are composed of strain gage bridge , and through subsequent instrumentation amplifier is amplified , and then transmitted to the processing circuit ( usually the A / D conversion and CPU) display or actuators.

[carsensors]

Pressure sensor principle

Pressure sensors are most commonly used in industrial practice of a Crank Position Sensor , which are widely used in various industrial automation environment, involving water utilities , rail transportation, intelligent buildings, production automation , aerospace , military, petrochemical, oil, electric power, shipbuilding , machine tools , pipes and many other industries , here are some simple common sensor principle and its application