The function of the MQS-2 series limit switch
MQS-2 series limit switch is a kind of electronic switch widely used in automatic wheelchairs, which realizes the control of the direction, speed, and safety of the wheelchair movement through the coordination of the induction part and the control part.
MQS-2 series limit switches are widely used in automatic wheelchairs, mainly playing the following roles:
1. Control the direction of wheelchair movement
MQS-2 series limit switches can detect the direction of the wheelchair turning, and control the direction of the wheelchair moving forward, backward, left, and right through the corresponding control circuit.
2. Ensure the safety of the wheelchair
As the MQS-2 series limit switch has the limit protection function, when the wheelchair occurs abnormal conditions (such as overweight, overload, etc.), it can stop the movement of the wheelchair immediately to avoid the occurrence of accidents.
3. Control the speed of the wheelchair
MQS-2 series limit switch can also detect the speed of the wheelchair, and through the corresponding speed-regulating circuit, control the speed of the wheelchair, and improve stability and safety of the wheelchair.
4. Improve wheelchair portability
The MQS-2 series limit switch folds the wheelchair into a small space for easy carrying and storage.
The working principle of the MQS-2 series limit switch
MQS-2 series limit switch is an inductive electronic switch, its working principle can be divided into two parts, namely the induction part and the control part.
1. Induction part
The induction part of the MQS-2 series limit switch is mainly composed of the contactor, magnet, and conductive plate. When the wheelchair moves, the contactor will contact the conductive plate and transmit the signal to the control part; At the same time, the contractor will also be adsorbed by the magnet, maintaining a close connection with the conductive sheet.
2. Controls
The control part of the MQS-2 series limit switch is mainly composed of a chip, capacitor, and resistor. After the induction part transmits signals, the chip will carry out signal processing and transmit the result of signal processing to the motor control system of the wheelchair through capacitors and resistors, and other components to control the movement direction and speed of the wheelchair and other parameters.