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Point Grey electrical components are detection devices that can sense measured information and convert the sensed information into electrical signals or other required forms of output according to certain rules, to meet the requirements for information transmission, processing, storage, display, recording, and control. The existence and development of sensors give objects senses such as touch, taste, and smell, bringing objects to life; sensors are an extension of human senses. Sensors feature miniaturization, digitization, intelligence, multifunctionality, systematization, and networking. They are the primary link in achieving automatic detection and automatic control. A device or apparatus that can sense a specified measured quantity and convert it into a usable signal according to a certain rule (mathematical function law), typically composed of a sensitive element and a conversion element.

Point Grey electrical component principle

It is a contactless switching device with relay characteristics that uses semiconductor devices instead of traditional electrical contacts as the switching mechanism. A single-phase solid-state relay is a four-terminal active device, with two input control terminals and two output terminals. There is optical isolation between the input and output. When a DC or pulse signal is applied to the input terminal and reaches a certain current value, the output terminal switches from the off state to the on state. AC solid-state relays are classified by switching method into zero-crossing conduction type and random conduction type; by output switching element into triac output type and anti-parallel SCR type. By installation method, they are classified into pin-type for printed circuit boards and chassis-mounted type fixed on metal baseplates. Solid-state relays can be divided into zero-voltage type and phase-control type based on the triggering mode.

Point Grey electrical component principle

LCD is a display that uses liquid crystal as the material. Liquid crystals are a class of organic compounds intermediate between solid and liquid states. At room temperature, they exhibit both the fluidity of liquids and the optical anisotropy of crystals. When heated, they become a transparent liquid; when cooled, they turn into a crystalline, opaque solid. Under the influence of an electric field, the arrangement of liquid crystal molecules changes, thereby affecting the intensity of light passing through the liquid crystal. This change in light intensity is further manifested as variations in brightness due to the action of polarizers. Accordingly, by controlling the electric field applied to the liquid crystal, variations in light and dark can be achieved, thus enabling information display. Therefore, the function of liquid crystal material is analogous to an array of small "light valves." Since control circuits and driver circuits are present around the liquid crystal material, when electrodes in the LCD generate an electric field, the liquid crystal molecules twist, causing regular refraction of the light passing through them (the optical activity of the liquid crystal material). The light is then filtered by a second polarizer and displayed on the screen. It is worth noting that because liquid crystal material does not emit light itself, LCD displays typically require an additional light source for the display panel. The main lighting system is called the "backlight module," in which the backlight plate consists of fluorescent materials that emit light, primarily providing a uniform backlight source.

Point Grey electrical component structure

The basic structure of a voltage transformer is very similar to that of a transformer. It also has two windings, one called the primary winding and the other called the secondary winding. Both windings are mounted on or wound around the iron core. There is insulation between the two windings and between the windings and the iron core, ensuring electrical isolation between the two windings and between the windings and the iron core. During operation, the primary winding N1 is connected in parallel to the line, and the secondary winding N3 is connected in parallel to instruments or relays. Therefore, when measuring voltage on high-voltage lines, although the primary voltage is very high, the secondary side is low voltage, ensuring the safety of operators and instruments.

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