An accelerometer is an electronic device that measures the force of acceleration and converts it into a signal. It is possible to calculate the skew angle of the device relative to the horizontal plane, and analyze the equipment movement method through the analysis of dynamic acceleration. The higher the sensitivity, the greater the information to noise ratio of the measurement system, and the system is not susceptible to electrostatic disturbance and electromagnetic fields, but in long-term use, there will be a certain error in the sensitivity of the sensor, so we need to adjust.
The sensitivity error of the accelerometer can be divided into two situations, one is that the sensitivity of the sensor is low, and the other is that the sensitivity error is large, so how to solve it?
Let's first talk about the solution to the situation of low sensitivity, there are two reasons for low sensitivity.
Reason 1: The insulation impedance of the sensitive core of the accelerometer decreases
Solution: If the insulation resistance of the sensitive core decreases, the accelerometer needs to be baked within its operating temperature range, and the sensitivity can increase again, but generally decreases again.
Reason 2: The piezoelectric coefficient of the sensitive core is attenuated
Solution: If the piezoelectric coefficient of the sensitive core is attenuated, then the sensor needs to be calibrated de novo.
So what is the problem of large sensitivity error?
First of all, it is caused by the excessive temperature response coefficient of piezoelectric data in a non-room temperature environment, and to solve this problem, it is necessary to choose an accelerometer with a small temperature response coefficient error.
|
More on that
|
How to deal with the malfunction of the proximity sensor during work
What is the reason for the detection signal when no metal object is close to the switch?
The magnitude of the electromagnetically induced voltage is proportional to the current of the disturbance source, that is, the larger the disturbance current, the greater the disturbance voltage. If the proximity switch does not adopt any ...
|
|
Anti-jamming technology for sensors – we are blessed
1. Shielding skills
Containers are made from metal materials. Wrapping circuits that require maintenance between them can effectively prevent the disturbance of electric or magnetic fields, which is called shielding. Shielding can be divided into electrostatic shielding, electromagnetic shielding and low-frequency magnetic shielding.
2. Electrostatic shielding
...
|
|
Precautions for the installation of linear displacement sensors – we are blessed
1. The linear displacement sensor should be used to prevent over-travel in the application, and a certain margin should be left in the selection to facilitate the use of the device.
2. The linear displacement sensor device is fixed by a bracket, and then the follow-up shaft is connected to the moving object to be measured. When the sensor is fixed in the device, it can be ...
|
|
Classification and working methods of photoelectric sensors – we are blessed
1. Slotted photoelectric sensor
A light transmitter and a receiver are mounted face to face on either side of a slot is a fork photoelectric. The luminaire announces infrared or visible light, and the light receiver receives the light unobstructed. But when the object to be detected passes through the trough, the light is blocked ...
|
|
Industrial applications of rotary encoders
Rotary encoders are a class of sensors used to detect the angle of rotation and its derived mechanical parameters, including velocity and acceleration, etc., and can detect transmission movements such as rotation and linear lines. Due to its widespread use, rotary encoders convert mechanical inputs into electrical signals, which can be used by counters, tachometers, programmable...
|
|
Attention to the problem of testing six-wire load cells – we are blessed with it
Because the appearance of the six-wire sensor and the six-wire four-wire sensor can not be distinguished, before the measurement and verification personnel test the sensor, if they find that the sensor input and output cable has six wires, it should be clear whether the sensor is a six-wire sensor, and the six-wire load cell test can not use a fine digital voltmeter...
|
|
Commonly used sensor type – Doublebless
1. Semiconductor type Semiconductor gas sensor is a gas sensor that uses semiconductor gas sensing elements as sensitive elements, which is the most common gas sensor, widely used in combustible gas leakage detection equipment in homes and factories, and is suitable for the detection of methane, natural gas, liquefied gas, hydrogen, etc.
|
|
Problems with differential pressure sensors – Blessing
1. Temperature
Excessive temperature is one of the common causes of differential pressure sensor failure, as there are many components of the differential pressure sensor that can only function properly within the specified temperature scale. During installation, if the sensor is exposed to temperatures beyond these temperature scales, it may be exposed to ...
|
|
Exhibit at productap China 2019
On March 20, at the 2019 Munich Shanghai Electronic Production Equipment Exhibition, the reporter of Zhihui Industry interviewed Mr. Xiao Dong, the sales manager of the South China Region of the company, and Mr. Xiao shared the history of the company's development, the strategy of shopping malls in China, and the latest products brought by the company at this exhibition.
...
|
|
A common type of sensor – a sensor
Resistive
A resistive sensor is a device that converts physical quantities such as displacement, deformation, force, acceleration, humidity, temperature, etc. into resistance values. There are mainly resistive strain gauge, piezoresistive, thermal resistance, thermal, gas-sensitive, moisture-sensitive and other resistive sensor materials.
|
|
Analysis of the use of P+F encoders
1. Grating pollution This will reduce the signal output amplitude, and the oil must be quietly wiped off with absorbent cotton dipped in anhydrous alcohol.
2. Encoder connection cable failure: the probability of this fault is high, and it is often encountered in maintenance, so it should be a priority element. Generally, the encoder cable is broken ...
|
|
P+F proximity switch selection points
1. Select the proximity switch type according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is a non-metal such as wood, plastic, paper, water, etc., or a smaller and finer metal, a capacitive proximity switch should be selected.
...
|
|
Analysis of mechanical damage of encoder servo
Mechanical damage is common in servo response encoder problems, including hardware damage to the internal component structure of the encoder due to mechanical oscillation, collision, impact, wear and tear. Excessive mechanical oscillations may cause damage to the encoder disc, shaft and bearing.
|
|
The proximity switch determines the key points of the model
1. Select the type of proximity switch according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is non-metal such as wood, plastic, paper, water, etc., or smaller and finer metals, the capacitive proximity switch should be selected.
...
|
|
Sensors used in obstacle avoidance for industrial robots - Bejiafu
Mobile robots need to obtain information about surrounding obstacles in real time through sensors, including scale, shape, and orientation information, to complete obstacle avoidance. There are many kinds of sensors used in obstacle avoidance, and the common ones are vision sensors, laser sensors, infrared sensors, ultrasonic sensors, etc.
...
|
|
Failure analysis of gas sensors in different situations – we are blessed
A gas sensor is a converter that converts the volume fraction of a gas into an electrical signal. When we use gas sensors, we will inevitably encounter some problems, in this regard, we have made the following analysis:
1. Gas sensing ...
|
|
How to choose a pressure sensor – we are blessed
1. Recognize the type of pressure measurement, that is, to measure the gauge pressure, absolute pressure or differential pressure. Gauge pressure refers to the pressure value with atmospheric pressure as the zero point, which can have positive and negative values, positive above atmospheric pressure, and negative below atmospheric pressure. The absolute difference refers to the pressure value with the vacuum as the zero point, and the absolute pressure is as long as the value is positive ...
|
|
The choice of torque transducer – we are blessed
1. Selection of reliability
The potential of a sensor to persist in its properties over a period of time is called reliability. In addition to its own structure, the key factor affecting the long-term reliability of the controller is the use of harsh environments.
Evil...
|
|
Introduction and installation matters of the safety barrier
The safety barrier, also known as the safety factor meter, is an important part of the intrinsic safety system.
There are two main types of barriers: P+F Zener barriers and P+f isolated barriers. The core elements of a double Forgina barrier are a diode, a current-limiting resistor and a fast fuse.
...
|
|
Features and functions of photoelectric switches of the sensor
Photoelectric switches are what we generally call sensors. The national standard GB7665-87 defines the definition of the sensor: a device or device that can sense the measured part of the rule and convert it into a usable signal according to the certain rules, which is generally composed of a sensitive element and a conversion element.
...
|
|
Contact
working hours
