What is a proximity light sensor, a light sensor

1.If the proximity sensor does not respond when talking on your phone, please use it first"Turn off the screen (automatically) during a call"To tick, please go to: Settings - My Device - Devices - Call - Turn off the screen during a call Tick. (This function is enabled by default for some models, and there is no setting switch).

2.Turn off your phone and restart it.

5.If the problem persists, please bring the purchase invoice, repair card and machine to the Samsung service center for professional after-sales engineers to help test. Samsung Service Center Address Query**.

Hello dear Samsung users:

According to your description, the light sensor does not have the Turn Off option on your phone, if your phone supports the light sensor, if your phone's auto-adjustment function fails, please bring the purchase invoice, repair card and machine to the Samsung service center, and the engineer will check the machine and deal with it.

It is recommended that you apply for "appointment to store" on Samsung's official website to enjoy priority repair services

Comments, suggestions, complaints, please click:

1. The light sensor is also called the brightness sensor, and many tablets and mobile phones are equipped with this sensor. Generally located above the screen of the handheld device, it can automatically adjust the brightness of the screen of the handheld device according to the brightness of the light that the handheld device is currently in, bringing the best visual effect to the user. For example, in a dark environment, the backlight of the screen of a handheld device will automatically dim, otherwise it will be harsh.

2. Its function is to sense the intensity of the light, and then feedback to the handheld device to automatically adjust the brightness of the screen, so as to achieve the purpose of saving power.

3. The light sensor is composed of two components, namely the light projector and the light receiver, and the light is focused by the lens by the light projector, which is transmitted to the lens of the light receiver, and then to the receiving sensor, and the receiving sensor will be received.

In addition to considering the frequency characteristics, the selection of acoustic emission sensors should also consider the following issues: a, **. Different properties have different **.

Purchase according to your budget. b. Temperature characteristics. According to the environment in which the sensor operates, there are high temperature type, low temperature type and normal temperature type.

c. Noise. Sensors are available in differential and single-ended versions. Noisy ones are differential.

d. Size. Some workplaces require small sensors. If you really don't know what kind of choice you should choose, you can consult Qingcheng Acoustic Emission Motor, specializing in the research and development, production and technical application services of acoustic testing equipment, the product quality is very good!

Acoustic emission sensors, acoustic emission detectors, Internet of Things acoustic emission devices.

Sensors that can produce strain on light intensity can be called light sensors;

When exposed to visible light, the photoelectric effect is generated, which converts the light signal into an electrical signal output. In addition to measuring light intensity, it can also use the transmission, occlusion, reflection, interference and other rays of light to measure a variety of physical quantities, such as size, displacement, velocity, temperature, etc., so it is an important sensitive device with a wide range of applications.

The photoelectric measurement does not have direct contact with the measured object, the mass of the beam is approximately zero, there is no friction and almost no pressure is applied to the measured object during the measurement.

For general acoustic emission applications, the signal frequency band range is mostly between 25kHz and 750kHz, so resonant sensors are more suitable. Resonant narrowband sensors with a general broadband frequency of 150kHz are commonly used for metal materials and other applications; For acoustic emission signals such as corrosion and leakage, resonant sensors with a resonant frequency of 40kHz are commonly used; Due to the relatively low response sensitivity of wideband sensors in a wide frequency band, wideband sensors are selected for spectrum analysis. Qingcheng acoustic emission sensor is made of high-quality stainless steel material, and the overall shielding design can effectively reduce interference; It is suitable for bridge wire fracture monitoring, valve pipeline leakage monitoring, tool wear monitoring, wind power equipment monitoring, rotating equipment acoustic emission monitoring, structural parts damage monitoring, storage tank floor acoustic emission monitoring.

Photoelectric switch is to use the measured object to block or reflect the light beam, and the circuit is selected by the synchronous circuit to detect the existence of the blocked object. All objects that reflect light can be detected. The photoelectric switch converts the input current into a light signal on the transmitter and emits it.

The receiver will then detect the target object based on the intensity or presence of the received light. Most photoelectric switches use infrared light, which has a wavelength close to that of visible light. Photoelectric switch manufacturers said that different standards and classification methods are used in the classification of various photoelectric switches, representing different attribute categories, and there are some classification methods between them that are cross-related, and photoelectric switches will not be able to be selected at multiple levels through the simplification of a classification method and the integration and utilization of needs.

1.Classification according to detection methods One is the light amount method, most of the photoelectric switches are used to detect whether the object is the amount of light, both by the light source by the object shading or reflection, radiation and shadow caused by the change of the amount of light to detect whether the object has it. In addition, photoelectric switch manufacturers have also introduced the triangulation ranging method, and the amount of light is easily affected by the flatness and roughness of the surface of the object and the color, so the distance method is required to be detected in some occasions with high requirements.

The laser measurement method is to emit an optical signal from the laser to the target, and then accept the reflected light signal from the target. 2.Classification of light source type Photoelectric switch manufacturers said that most of the current light sources use light-emitting diodes, and according to different purposes, incandescent lamps (visible light) need white light sign detectors, due to the service life and seismic performance are relatively small.

Light-emitting diode (LED) type (visible light and near-infrared light) is easy to modulate, long life, small size, low consumption, the advantage of ** is the ideal light source photoelectric switch, photoelectric switch manufacturers say can be used for various purposes, fluorescence type (visible light) is mainly used in photoelectric systems need length (image sensor, etc.), ultraviolet (invisible) through ultraviolet irradiation to detect objects visible light (fluorescence finishing defects, foreign bodies in food, etc.). The gas laser (visible light) beam is relatively strong, and it is used in flaw detection systems and barcode systems and strong light attenuation occasions, and the stable operation of photoelectric switch manufacturers such as steam, flame and other occasions. Photoelectric switch manufacturers have also corrected some people's mistakes, some people think that the purchase of photoelectric switches only need to choose the best products, but in fact, due to the difference in its space environment adaptation, the first product will not be able to fully guarantee the applicability, so want to pass the basic principle of the photoelectric switch, the structure of the components and the arbitrary selection of the working range, after the installation will be determined by tracking and measuring the photoelectric switch state.

The light sensor is adjusted under different lights, such as indoor and outdoor, then the brightness of the mobile phone screen will change; The proximity sensor automatically turns off when you are close to the phone when you hit **, in case you touch the screen and get troublesome.

The proximity sensor senses the surrounding light and tells the processing chip to automatically adjust the brightness of the display backlight, reducing the power consumption of the product. For example, in mobile applications such as mobile phones and laptops, where the display consumes up to 30% of the total battery charge, the use of an ambient light sensor can maximize the operating time of the battery. On the other hand, the ambient light sensor helps the display to provide a soft picture.

When the ambient brightness is high, the LCD using the ambient light sensor will automatically adjust to high brightness. When the external environment is dark, the display will be adjusted to low brightness to achieve automatic brightness. Ambient light sensors need to be labeled with an infrared cut film on the chip, or even a patterned infrared cut film directly on the silicon wafer.

In the way of "eddy current" detection - proximity sensor, as a component with the ability to perceive the proximity of objects, the proximity sensor uses the sensitive characteristics of the approaching object to identify the proximity of the object, and outputs a switching signal, which is usually called a bit proximity switch; Proximity sensors can replace mechanical switches such as limit switches or microswitches and detect the proximity of detected objects without contact. Detection principle: Due to the use of a detection coil, a high-frequency magnetic field is generated.

According to electromagnetic induction, if the detected object (metal) is brought close to this magnetic field, an induced current (eddy current) flows through the detected object. In this current, if the impedance of the detection coil changes, it can be detected by stopping the oscillation.

A sensor that automatically interprets the external light, feels the intensity of the external light, and automatically controls and adjusts

It can allow the product to control the action under the change of external light, which can make portable digital products more environmentally friendly and energy-saving. Automatic switching between the screen display and the black screen when you hit **.

These two sensors are not used for the same purpose, so there is no way to compare them.

Advanced sensors and optoelectronics, on my side, this is still spent on the transmission, and when I am campaigning with him, what is the so-called division of this side?

For both sensors, due to the different uses. Therefore, it is necessary to choose according to the requirements when using the specific use, but I personally think that the photoelectric sensor is still relatively good.

Maybe the two things they came into contact with, or used a different range, so the two things are not comparable.

Which is better, proximity sensor or photoelectric sensor? This must be the better of the optoelectronic factory street, the key scene, more convenient, and more practical.

I think this must be a better photoelectric sensor, which is more high-tech and more high-tech.

These two proximity sensors and photoelectric sensors, I think are relatively good.

Hello, the two sensors you mentioned, I personally think that photoelectric sensors are better.

Both sensors have their own benefits. Electrical sensors have their own uniqueness. Peculiarity. It's especially convenient to use.

The proximity sensor is good, the transmission signal strength is good, and the linearity error is small.

Proximity sensors, photoelectric sensors should be better than proximity sensors, because they are close to pure software, and they can be sensed with a little reference. With photoelectric sensors have to require light and electricity.

Which is better, proximity sensor or photoelectric sensor? I think this depends on which one is suitable for you? I think the proximity sensor should be pretty good, you go and pick it.

Which is better, proximity sensor or photoelectric sensor, I think it is still the light sensor, this one is better.

Which is the better slide of proximity sensor vs proximity sensor, but compared to the air according to the opinion between the two?

Proximity sensors and photoelectric sensors are good, so it is recommended to choose photoelectric sensors.

The two of them are different sensors, and their functions are also different.

Like the proximity sensor and the photoelectric sensor, it should come from different places, like the proximity sensor, it is close to the photoelectric sensor, relying on the light, so these two words do not make sense.

This can't say which one is better than the other, give us which one to choose in the specific situation.

Photoelectric sensor: It is a key component to realize photoelectric conversion in various photoelectric detection systems, and it is a device that converts optical signals (infrared, visible and ultraviolet radiation) into electrical signals.

Photoelectric sensors are sensors that use optoelectronic devices as conversion elements. It can be used to detect non-electric amounts that directly cause changes in the amount of light, such as light intensity, illuminance, radiation temperature measurement, gas composition analysis, etc.; It can also be used to detect other non-electric amounts that can be converted into changes in the amount of light, such as part diameter, surface roughness, strain, displacement, vibration, velocity, acceleration, and the identification of the shape and working state of the object. Photoelectric sensors are non-contact, fast responding, and reliable, so they are widely used in industrial automation devices and robots.

In recent years, new optoelectronic devices have emerged, especially the birth of CCD image sensors, which has opened a new page for the further application of photoelectric sensors.

Application: 1. Smoke and dust turbidity monitor.

Preventing industrial smoke pollution is one of the important tasks of environmental protection. In order to eliminate industrial soot pollution, it is necessary to know the amount of soot emissions first, so it is necessary to monitor, automatically display and alarm the source of soot. The soot turbidity in the flue is measured by the magnitude of the change in the transmission of light through the flue.

If the turbidity of the flue gas increases, the light emitted by the light source is absorbed and refracted by the soot particles and increases, and the light reaching the light detector decreases, so the strength of the output signal of the light detector can reflect the change of the turbidity of the flue.

2 Application of photocells in photoelectric detection and automatic control.

When photocells are used as photodetectors, their basic principles are the same as those of photodiodes, but their basic structures and manufacturing processes are not exactly the same. Since the photocell does not need an external voltage to work; It has been widely used in photoelectric readout, photoelectric coupling, grating ranging, laser collimation, film sound reproduction, ultraviolet light monitor and flameout protection device for gas turbines.