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What is Sensor?

A sensor is a device that specializes in recognizing, measuring and responding to input signals based on factors such as humidity, physical movement, temperature, pressure, light and other phenomena. other. It is then converted into an electrical signal to collect information about the state or process into encoded information and send it back to the computer. The PLC system will rely on that information to be able to control the system remotely.

Quantities to be measured usually do not have electrical properties such as temperature, pressure, … acting on the sensor gives us a characteristic quantity of electrical properties such as charge, voltage, current,…

General structure of the Sensor

The general structure of all types of sensors on the market is manufactured from sensor electronic probes – electrical elements whose properties change according to the surrounding environment. In each Sensor, a collection of circuit elements forms a complete system. The output signals are calibrated to the most common voltage and current levels suitable for controllers.

The output signals are calibrated to common voltage and current signal variations suitable for the control units.

Common Sensor Types

Depending on the needs of use and the environment will require the use of different types of Sensors.

Light Sensor

Light sensor is a smart device capable of recognizing the light changes of the environment to promptly adjust accordingly. This sensor detects light and adjusts to changes based on optical diodes. Photoelectricity converts detected light energy (photons) into electrical energy (electrons).

Applications: Solar lights, Electronic equipment, Cars, Applications in security,…

Water Level Sensor

Water level sensor (also known as water level sensor) is a device specialized in measuring liquids in industry or in life. For more advanced sensor lines, it is also used to measure chemical substances, acids, and toxic substances in industries.

Pressure sensor

Is a device used to measure pressure in hydraulic, pneumatic, … pressure measurement needs or other pressure applications. Its main role is to help convert pressure signals to electrical signals easily.

Structure of a standard pressure sensor consists of 2 parts: sensor and processing block. This is a device with relatively high mechanical strength, low cost and easy installation.

The application of the pressure sensors is to measure the pressure of: pneumatic, hydraulic, water, oil, in pipeline systems, vacuum, …

Thermal sensor

Thermistor (also known as thermocouple, thermistor) is a device that measures temperature changes and gives a form of signal to the temperature reading and conversion devices. Temperature sensors are often applied in the fields of: medical, hydrometeorology, water temperature, air humidity,…

Thermal sensors are also applied in the fields of agriculture, industry and manufacturing. For example, in the preservation of agricultural products in a cold environment, we need a Thermal Sensor to monitor to always keep the right temperature.

Humidity Sensor

Humidity sensor is a device used to measure air humidity, soil moisture, applied in many industries and used with many different applications such as: heating system, home air conditioner, in office rooms, cars, indoor spaces, industrial spaces and greenhouses. Larger scale as a meteorological station to report weather.

Oxygen sensor

Oxygen sensors are installed in the car’s engine system, used to measure the residual oxygen concentration in the exhaust gas and send it to the Central Control Unit, considering the vehicle’s fuel condition, from there. it gives a signal to adjust the amount of injection accordingly. 

Smoke sensor

Smoke sensor is an electronic device capable of sensing the presence of smoke in the environment and converts it into an electronic signal and sends a signal to the center to trigger an alarm.

There are two types of smoke sensors: application ionization and photoelectric applications.

The Role of Sensors in Automation

– An indispensable part in most automatic control systems.

– Ability to perceive the signals in and out quickly.

– Play the role of measuring high values.

– Specify limits for physical quantities in process control problems.

DVES – a Reputable Sensor Supplier

DVES is confident to be a unit specializing in importing and distributing a wide range of Sensor Devices including: Magnetic Sensor, Humidity Sensor, Thermal Sensor, Optical Sensor, Thermal Sensor, Fire Alarm Sensor, .. . with these advantages:

– Sensor with high accuracy and reliability

– DVES provides detailed technical drawings with products according to demand

– Provides highly durable Sensors suitable for harsh environments.