Rectified DC power supply system sensor design elements

DC power meter management control in electrolysis industry has a pivotal position , it is one of the main technical assessment indicators tapping the potential of business efficiency , but also to protect one regulating rectifier power source running smoothly , so that the DC sensor power rectifier system accurate, stable and reliable is very important.As we all know , the current domestic market popular DC current sensors and closed-loop two separate forms , and the two forms of Car Temperature Sensor measurement accuracy has its theoretical basis , are based on the current Hall elements collected by the air gap in the magnetic circuit and the magnetic field is proportional to the voltage signal converted over , under current law the theoretical framework of the whole design .Factors affecting the DC sensor measurement accuracy depends largely on the choice of the core and the Hall device , as much as possible to ensure the performance of magnetic materials , magnetic materials forming around them a special process to deal with the structure , making the magnetic material permeability is improved, so that Coolant Temperature Sensor has been effectively guaranteed linearity . In the Hall devices , the requirements of its good work in the constant temperature stability and output linearity , and with good frequency characteristics.DC sensor circuit board preferably double-sided gold-plated plate , electrical connector preferred fasteners to ensure high reliability products ; temperature compensation process in terms of a single Hall element to prevent the influence of temperature on the outside of the electronic Crank Position Sensor concentrated in a circuit portion controlled thermostat box inside , avoiding the influence of a local temperature coefficient of the offset caused by the change in the system occurs , thus ensuring the high stability of the product ; the sensor selection circuit structure is preferably three differential amplifier circuit , eliminating the Hall element is greater than the output resistance of the op amp input resistance generated errors. After stage amplifier circuit sensor multistage isolation amplifier output , the output signal interfere with each other , so that the DC current meter with large access control system is very convenient. Multiple parallel rectifier , when one station blackout, straight nets reverse side short circuit short-circuit current is large, the contact sensor to set a limit reverse current protection , to reverse the protective effect of the rectifier unit.

The definition and use of fiber Bragg grating sensors

FBG sensors sensing process is modulated by external parameters on the Prague center wavelength pass to get emotional interest , which is a wavelength modulation type optical fiber Shaft Position Sensor, FBG sensors should therefore belong in a special class of optical fiber sensors . Currently fiber grating and its application in optical fiber sensors and optical fiber communications caused widespread concern.FBG sensors can directly measure temperature , strain and other physical quantities . As the fiber grating wavelength sensitive to temperature and strain simultaneously , namely temperature and strain caused by the fiber grating coupler wavelength while moving , making it impossible to distinguish between temperature and strain by measuring the wavelength of the fiber grating coupler move .FBG Car Temperature Sensor have immunity to electromagnetic interference , signal bandwidth , high sensitivity , ease of reuse, light weight, and so is suitable for use in high temperature, corrosive hazardous environments advantages. Since 1989 the United States Morey , who first studied strain and temperature sensor FBG conducted since the world are very concerned and carried out its extensive applied research, in just 10 years time has become the FBG sensor field development fastest growing technology and success in many fields of application , FBG sensors have a very wide range of applications in large-scale construction and safety monitoring wells and other special occasions.

What is the characteristics of strain pressure sensor

Pressure sensor is a kind of commonly used sensors, widely used in medical, ships, aerospace, petrochemical, machine tools and other industries. Pressure sensors need to know when in use of knowledge is also a lot of, among them the characteristics of strain pressure sensor for users is also a need to understand, here is for everyone to introduce what is the characteristics of strain pressure Automobile Temperature Sensor.The measuring range of the pressure sensor is twice as big as the inductive sensor, it can not only detect metal target, but also detect dielectric, such as paper, glass, wood and plastics, and even can be detected by a wall or paper shell. Because the human body in low frequency is equal to the electrical conductor, thus can be used for the quiver measurement and alarm.
In the measurement of strain, the strain gauges can be on the component, but if the measuring force, pressure, acceleration, should first change the physical quantity measuring strain, and strain gage, a conversion process more than direct measurement, to complete the conversion process is usually called the original as the elastic elements, therefore, the strain Camshaft Position Sensor is usually made of elastic sensitive components and the strain gauge is composed of two parts.
Elastic sensitive element is a core component of sensor, elastic component of elastic energy storage requirements high, usually expressed as elastic material storage and deformation work without permanent deformation. Pressure sensor has good mechanical processing and heat treatment performance, has high compressive strength. Influence of temperature and other characteristics, correct choice of elastic sensitive components and strain gauge bridge is an important way to improve the strain sensor:
1 measuring range, high precision, the force sensor can measure the force of 0.01--1000000N, the accuracy can reach more than 0.05%FS; the pressure sensor can measure the pressure of 0.1-1000000, the accuracy can reach 0.1%FS.
2, stable and reliable performance, long service life, such as weighing type mechanical lever, the lever, the knife edge part of mutual friction loss and deformation, we want to maintain its accuracy is quite difficult, using resistance strain weighing sensor made of electronic pump, truck scale, railway scale, long-term stable operation in harsh environmental conditions.
3, the frequency response characteristic of excellent. Pressure sensors of resistance strain gauge response time is 0.01MS, the dynamic process of semiconductor strain gauge can reach strain sensor if 0.001MS can take measures in the elastic component is constitute by them can be measured in tens or even hundreds of Hertz hz.

Building materials used in the experiments

In building materials , especially concrete drying process, we should pay attention to the drying trend, which is one of the indicators of the evaluation of products, but also for the construction side to provide a reliable data. Application of temperature and humidity Crank Shaft Position Sensor can record this data and provide building materials research side , the construction will provide useful help . Especially in military construction , time is life , accurately grasp the concrete drying time is starting cause the enemy , in order to effectively provide the vital forces on the battlefield to provide a guarantee , this feature can be completed by the temperature and humidity Crankshaft Positioning Sensor. Monitoring and recording of temperature , can confirm its quality assurance Immunization . Temperature and humidity sensors convenient and reliable solution to this problem. Different vaccines , the vaccine with different storage temperature requirements . To ensure that bacteria, vaccine safety during storage and transport , and storage and transportation process must be carried out to detect the ambient temperature record of the whole process , and should be fully automated detection recording , there should be no human factors , in order to improve data reliability. High quality precision temperature and humidity sensors can perfectly accomplish this function , because it can also be a long record in the absence of external power supply situation.

Used in the vaccine cold chain

In vaccines, vaccine and other biological products shipped from pharmaceutical finished products warehouse , the cold chain storage and transportation process to the relevant population vaccinated , its environment through the use of the vaccine in the vaccine cold chain , vaccines and other biological products from pharmaceutical finished goods warehouse shipped to cold chain storage and transportation process to the relevant population vaccinated , by its environment monitoring and recording of temperature , can confirm its quality and ensure immunization effect. Temperature and humidity Motor sensor convenient and reliable solution to this problem. Different vaccines , the vaccine with different storage temperature requirements . To ensure that bacteria, vaccine safety during storage and transport , and storage and transportation process must be carried out to detect the ambient temperature record of the whole process , and should be fully automated detection recording , there should be no human factors , in order to improve data reliability. High quality precision temperature and humidity Camshaft Position Sensor can perfectly accomplish this function , because it can also be a long record in the absence of external power supply situation.

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 , 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 Camshaft Position Sensor , 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 not normal , then a great impact . Third, there is a common crank Car Temperature 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 .

Air temperature sensor

Automatic air conditioning system temperature sensor includes : engine coolant temperature sensor , in-car temperature Sensor Camshaft , ambient temperature sensor , evaporator temperature sensor. According to these sensor signals the control unit calculates the desired blowing air inside the cabin temperature , select the desired amount of air , and then control the air mixture inlet valve, out of air intake converter board , etc., within the temperature range set by the driver automatically adjust the temperature inside the cabin , to achieve the best , and automatic control of air conditioning on and off. One condition is that the air conditioning system refrigerant temperature higher than the room temperature, the ambient Engine Water Temperature Sensor circuit , the terminal water , poor contact or poor ground , the data stream will be displayed below the ambient temperature -30 ℃, will cause no refrigeration . Meanwhile, the engine coolant temperature sensor circuit or ground wire is bad, the signal loss of time, the cooling fan does not turn , lead to poor air conditioning cooling, will enter the fail-safe , so air conditioning stopped working