The nature of the sensors work in general is to detect any changes in quantity and other changes, and then follow the changes, the sensor sends signals to the detector to the controller, this sensor outputs a signal that is readable, through which the signals become in an optical or electrical form or any form of Signal images to match the change in the entry signal, in any measurement system.
What are the sensors
sensor component
Scanner: It is responsible for directing the second component, which is the optical instruments of the electromagnetic radiation receiver. The detectors have a different range of data for each image produced by a detector, so the image is passed to the fifth component.
Analog-Digital Converter: The fifth component of the stereo, which calibrates this data and assigns a specific range to it, so that there is a normal value ranging from a specific minimum value to another specific size. Images consisting of numerical values are transmitted to receiving stations above the ground.
Optical instruments: It is a set of lenses that work to receive the emission from the earth, which was able to reach the school, and then separate the radiation into several compounds on the basis of length, where each vehicle consists of a specific range of wavelength.
Detectors: made of semi-qualified materials that are affected by electromagnetic radiation and then produce an electric current, and there are a number of detectors that correspond to the radioactive compounds resulting from the optical group, so that a specific detector meets a specific vehicle and this detection is affected by the electromagnetic radiation of the library and then gives an electric current equivalent to the intensity of electromagnetic radiation.
Electrons: are considered the fourth component of the stereoscopic components and receive the electric current entering it from each detector separately and arrange the readings recorded by the detector in a corresponding arrangement for collecting data from the earth and then building an image of the earth in its wavelength region.
The role of sensors and their importance
Sensors are classified as the element that begins with the mass diagram in measurement systems, which is in direct contact with the variables to work on finding useful outputs, and the sensors are divided into three types of devices:
Sensors classified as active: they are the type that produce a clear signal emitted by an external excitation source, the physical properties of the device depend on the extent and quality of the external influence affecting it, so it is also called self-generating sensors.
Passive sensors: They are a type of sensor that works to emit a signal without the help of external sources of excitation, and it does not need any stimulus or additional voltage.
Analog Sensors: There are many types of digital and analog sensors available.
Sensor types
electrical sensors:
This sensor is used to sense the current and emits signals at the inputs of devices by means of control or via visual screens. In most cases, electrical sensors are based on knowing the effect of the hall, but other important methods are used.
The basic specifications also include the type of sensor, the function of the sensor, the small and large measurement fields, and the operating temperature range. Electrical sensors are used when data on the state of the electrical system is needed, and they are used in everything from railway systems to the fan, pump and heater.
Proximity sensors:
These sensors are the closest to electronic devices and are also used to detect the presence or absence of nearby objects by means of non-contact, the proximity sensor can detect the presence of objects within an area of up to millimeters, so it sends a DC output signal to the control unit.
Proximity sensors are used in countless industrial processes to determine the presence of machine components. The basic specifications include sensor type, maximum sensing distance, minimum and maximum operating temperatures, and this is in addition to the dimensions of diameter and length. Proximity sensor devices are a general image of short-term devices, but they are also found in Designs that can detect objects within several inches, one type of proximity sensor known to use is the capacitive proximity sensor.
radiation sensors:
They are sensors devices that work to detect radiation and are considered electronic devices that have a sensor that works by providing particles of alpha, beta or gamma and produces signals for meters and display devices. These basic specifications contain the type of sensor and also contain the minimum amount of energies that can be detected. They are used as devices for detecting radiation and counting samples.
pressure sensors:
Pressure sensors are also known as pressure sensors, or they may be called detectors or even transducers, and they may be considered electromechanical devices that work to clarify and detect forces per unit area within gases or liquids and issue accurate signals to the inputs of the control and display devices, and usually the pressure sensor is used or converts energy A baffle that blocks and bridges a pressure gauge to know and measure the force applied against the unit location.
The aforementioned basic specifications contain the important function of the sensor, small or large working pressures, and overall accuracy as well. In addition to the many features that exist in the device, the pressure sensor is used when data about the pressure of a gas or liquid is needed for control or measurement.
Fault sensors:
This type of sensor is the one that is used in a wide variety of industrial processes whose goal is to detect inconsistencies that exist on surfaces or found in basic materials. Ultrasound or sonic devices are used in defect sensors, or other means in order to find out defects within materials that It may be portable or even fixed, and these basic specifications include the type of sensor, the defect that may also be discovered, or the thickness and application required to be achieved.
position sensors:
Position sensors are called position sensors, or they may be called detectors or transducers. They are also electronic devices that are used to sense the locations of valves, doors, throttle and others. It also works to extend the place with signals to be connected to control devices or display devices, and it contains basic specifications for this type of sensor. The function of the sensor and the field of measurement as well and the features that are specific to the type of sensor. The local sensor is used in whatever positional information is needed in a large and countless number of direct control applications.
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