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CONTORGROUP sensors are used to measure the robot's own position. Position sensors can be divided into two types: contact sensors and proximity sensors. Sensors that can sense the position of the measured object and convert it into a usable output signal. It is a sensor that can sense the position of the measured object and convert it into a usable output signal. Position sensors can be used to detect position, reflect switches in a certain state. Unlike displacement sensors, position sensors come in two types: contact and proximity.

CONTORGROUP sensor classification

Load cells are classified by conversion method into photoelectric, hydraulic, electromagnetic force, capacitive, magnetic pole variation, vibratory, gyroscope, and resistance strain gauge types, totaling 8 categories, with resistance strain gauge being the most widely used. 1) Photoelectric type: Includes grating type and code disk type. Grating sensors use Moiré fringes formed by gratings to convert angular displacement into photoelectric signals. There are two gratings: one fixed grating and one moving grating mounted on the dial shaft. The measured object placed on the weighing platform rotates the dial shaft through the force transmission lever system, driving the moving grating to rotate, causing the Moiré fringes to move accordingly. Using phototubes, conversion circuits, and display instruments, the number of moved Moiré fringes can be calculated, measuring the angle of grating rotation, thereby determining and reading the mass of the measured object. Code disk sensors: The code disk (symbol plate) is a piece of transparent glass mounted on the dial shaft, featuring black and white codes arranged according to a specific encoding method. When the measured object on the weighing platform rotates the dial shaft via the force transmission lever, the code disk also rotates by a certain angle. Photocells receive light signals passing through the code disk and convert them into electrical signals, which are then digitally processed by the circuit, finally displaying the digital value representing the measured mass on the display. Photoelectric sensors were mainly used in electromechanical combination scales. 2) Hydraulic type: Under the action of the gravity P of the measured object, the pressure of the hydraulic oil increases, and the degree of increase is proportional to P. By measuring the increased pressure value, the mass of the measured object can be determined. Hydraulic sensors have a simple and robust structure and a large measurement range, but the accuracy generally does not exceed 1/100. 3) Capacitive type: It works based on the proportional relationship between the oscillation frequency f of the capacitor oscillator circuit and the distance d between the plates. There are two plates, one fixed and the other movable. When the measured object is loaded onto the weighing platform, the leaf spring deflects, changing the distance between the two plates, and the oscillation frequency of the circuit changes accordingly. Measuring the change in frequency allows calculating the mass of the measured object on the weighing platform. Capacitive sensors consume little power, have low cost, and an accuracy of 1/200 to 1/500.

CONTORGROUP sensor features

Resistors, inductors, and capacitors are the three major types of passive components in electronics. A capacitive sensor is a sensor that converts changes in the measured quantity into changes in capacitance; it is essentially a capacitor with variable parameters. Capacitive sensors have the following advantages: high impedance, low power, requiring only very low input energy. They can achieve large change amounts, resulting in high signal-to-noise ratio and system stability. Fast dynamic response, operating frequency up to several megahertz, suitable for b contact measurement, whether the measured object is a conductor or semiconductor. Simple structure, strong adaptability, capable of working in harsh environments such as high/low temperatures and strong radiation, with wide application. With the development of electronic technology and computer technology, the disadvantages of capacitive sensors, such as susceptibility to interference and distributed capacitance, have been continuously overcome. Additionally, capacitive grid displacement sensors and integrated capacitive sensors have been developed. Therefore, they are widely used in non-electrical quantity measurement and automatic detection, capable of measuring parameters such as pressure, displacement, speed, acceleration, A degree, thickness, liquid level, humidity, vibration, and component content. Capacitive sensors have good development prospects.

CONTORGROUP sensor installation precautions

1) Handle load cells with care, especially small-capacity sensors using aluminum alloy as the elastic body. Any impact or drop caused by vibration is likely to cause significant output errors. 2) When designing the loading device and during installation, ensure that the axis of the loading force coincides with the force-bearing axis of the load cell to minimize the effects of inclined and eccentric loads. 3) Regarding horizontal adjustment. If using a load cell, adjust the installation plane of its base with a level until it is horizontal. If multiple sensors are used for simultaneous measurement, their base installation surfaces should be kept as level as possible. The main purpose is to ensure that the force borne by each sensor is basically consistent. 4) Determine the rated load of the sensor used based on the load cell capacity selection specified in its instructions. 5) To prevent chemical corrosion, apply Vaseline to the outer surface of the load cell during installation. Avoid direct sunlight and environments with drastic temperature changes. 6) Connect bypasses made of copper braided wire to both ends of the load cell loading device. 7) Do not extend the cable line yourself. If extension is absolutely necessary, solder at the joint and add moisture-proof sealant. 8) It is best to use baffles around the load cell to cover it. This prevents debris from falling into the moving parts of the sensor, affecting its measurement accuracy. 9) Keep the sensor's cable away from high-power power lines or places with pulse waves. If avoidance is impossible, run the load cell cable separately through an iron pipe and shorten the connection distance as much as possible. 10) Determine the rated load of the sensor used based on the load cell capacity selection specified in its instructions. Although load cells have a certain overload capacity, avoid such situations during installation and use. Even short-term overloading may cause permanent damage to the sensor. 11) For high-precision applications, allow the load cell and instrument to warm up for 30 minutes before use.

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