Senba Sensing Technology Co., Ltd.

  Electronica China 2019 Shanghai       This year's show reached a new high. Together with Productronia China in 2019, it not only continued the glory of the past, but also refreshed the data. A total of 1,586 exhibitors from 24 countries and regions came to the exhibition. The session increased by 15.4%. The display area reached 90,000 square meters, an increase of 12.5% over the previous session. A total of 92,695 professional visitors came to visit in three days, an increase of 19.2% compared with the previous session. With the theme of “Intelligence to the Future”, the Shanghai Electronics Fair in Munich in 2019 released the key words of the future industry, smart factory, +AI, loT+, new product base and China Power. Presenting the advanced technology of electronic products through innovative perspectives, the new interpretation of the future development trend of electronic applications. Mr. Falk Senger, Managing Director of Messe München, concluded that “ electr...

  LDR sensors are widely used in various industries. This article gives you a brief introduction and application of photoresistor sensor.       Brief Introduction of LDR Sensors Ldr sensor is a kind of special resistor made of special material, which has a rapid decrease of resistance value under the irradiation of specific wavelength. Its working principle is based on the internal photoelectric effect. It is very sensitive to light. With the increase of illumination, the resistance value decreases. In the absence of illumination, it presents a high resistance state. Using this characteristic, ldr photoresistor can be widely used in making light-controlled switch circuits, as well as monitoring cameras, light-controlled toys, dimming circuits and indoor light control. The following pictures show the shape of LDR sensors and the symbols of circuit diagrams.       This is a LDR sensor with two electrodes. The surface of the photoconductor is serpentine. ...

  No, alarm motion sensors do not work through glass. Most motion sensors use passive infrared (PIR) technology to detect motion. Changes in IR energy are not easily detected through glass. This is why motion sensors will generally not work through windows, which are usually insulated.   We provide passive infrared sensor ， senba sensing technology , pir sensor through glass  and pir through glass ,we will teach you how does pir work .

  Ldr sensors are sensitive to light sticking. The stronger the light, the smaller the resistance value; the darker the light, the greater the resistance value. So we can use this characteristic to construct the photosensitive circuit, and cooperate with relay/triode/MOS transistor to realize the photoswitch. Next, the circuit of realizing photoelectric switch by using ldr sensor, transistor and relay is introduced.       1. What is Ldr Sensor The working principle of ldr sensor is based on the internal photoelectric effect. The ldr photocell is very sensitive to light. Without light, ldr sensor presents a state of higher resistance value. Under strong light, its resistance value decreases rapidly, and presents a lower resistance value. The following is the physical diagram and characteristic curve of the ldr sensors.       2. Design of Optical Switch Circuit-Triode Implementation The circuit of the photoelectric switch is mainly composed of ldr sensor...

  LDR sensor is a special resistor made of semiconductor materials such as sulfide or selenide. It is also coated with moisture-proof resin and has photoconductive effect.       Characteristic of the LDR sensor LDR sensor are very sensitive to light. The stronger the light, the lower the resistance. With the increase of illumination intensity, the resistance value of the ldr photoresistor decreases rapidly, and it can be reduced to less than 1K.       Operating principle of LDR  sensor The working principle of LDR sensor is based on the internal photoelectric effect, that is, the semiconductor photosensitive material is encapsulated in the shell with transparent window by installing electrode leads at both ends to form the LDR sensor. In order to increase sensitivity, the two electrodes are usually combed.       Applications of the LDR sensor 1. The module of the ldr light dependent resistor is most sensitive to the ambient light in...

  With years' experience, Senba Sensor has high-quality photoresistors for sale. This article is a brief introduction of the light dependent resistor.       LDR sensor has no polarity. It is purely a resistor device. It can be used with either DC voltage or AC voltage. LDR photocell sensor is a photoelectric element made of semiconductor material and operated by internal photoelectric effect. Under the action of light, its resistance often decreases. This phenomenon is called photoconductive effect. Therefore, LDR sensor is also called photoconductor. When a voltage is applied between the metal electrodes at both ends of the LDR sensors, a current passes through it. When illuminated by light of appropriate wavelength, the current increases with the increase of light intensity, thus realizing photoelectric conversion.       Semiconductors such as metal sulfides, selenides and tellurides are the main materials used to manufacture LDR sensors. Usually, th...

  Security anti-theft solution       With the continuous improvement of people's living standards, people's demand for family life comfort is getting stronger and stronger. People tend to consider the safety of home in the first place. This kind of smart home mainly consists of visual intercom door machine and various detectors. The composition is connected to the smart home management machine. Once the alarm button is triggered, the smart home receives the signal through burglar alarm pir  sensors and performs as an alarm to remind the user.   The highest level of consumer acceptance in the smart home market is undoubtedly the security system, a complete security system including alarm system, video surveillance and video intercom.       After years of experience, the solution is applied to human body infrared sensor products. It is strongly recommended that you use the following models.   S enba sensing technology co ltd . provide inte...

  Non-contact temperature measurement solution       The traditional body temperature measurement is a contact measurement using a mercury thermometer, which has the advantages of stable performance and small error, but has the disadvantages of long measurement time, high risk of cross-contamination, and easy to cause mercury poisoning due to glass breakage.       Infrared ear thermometer is the most commonly used thermometer. It can test body temperature with a slight amount of forehead or ear, and it can also prevent body infection. Infrared ear thermometer collects infrared radiation from ear cavity and tympanic membrane through infrared sensor/ infrared photoresistor. And converted into a digital signal, the main control CPU unit converts the digital signal into a temperature value and displays it on the LCD screen. Compared with mercury thermometers, infrared ear thermometers have the advantages of high precision, high resolution, fast measurement...

  The working principle of LDR sensors is based on internal photoelectric effect. An LDR photoresistor is formed by installing electrode leads at both ends of a semiconductor photosensitive material and encapsulating them in a shell with a transparent window. In order to increase the sensitivity, the two electrodes are usually made into combs.       Semiconductors such as metal sulfides, selenides and tellurides are the main materials used to manufacture LDR sensors. Usually, thin LDR sensors and comb-shaped ohmic electrodes are fabricated on insulating substrates by coating, spraying and sintering methods. Leads are connected and encapsulated in sealed shells with transparent mirrors to avoid dampness affecting their sensitivity.       When the incident light disappears, the electron-hole pairs generated by photon excitation will recombine, and the resistance of the LDR sensors will return to its original value. When the metal electrodes at both ends ...