Speed including linear velocity and angular velocity, and at the same time the cable speed sensor and velocity sensor, we called speed sensor. But according to the different types of speed sensor has the merits of the different points, simply introduced the merits of the three types of speed sensor.

: first is the hall sensor in the concrete core drilling machine Lord rear-wheel drive gear, through drilling, will be a few small magnets set inside, and then install the hall element in the vicinity, by measuring the magnetic field changes, be able to get electrical pulse signal, access to the rear wheel rotation speed. Advantage lies in obtaining information accurate, small size, and does not increase the rear wheel load. Disadvantage is close to the main drive gear motor, susceptible to interference magnetic field; For punching gear, gear easy to damage. Followed by the photoelectric sensor, in the main drive gear surface attached to the ribbon of black and white intervals, the reflective photoelectric sensor is installed near the gear, when black and white ribbons by alternately, produce a series of electrical impulses, thus obtaining the rotation Angle. Can also punch of gear, using direct type photoelectric sensor, through the continuous accept to infrared light, produce electrical pulse signal, rotation Angle. Advantage is small size, not to increase the rear wheel load, reflective solutions of the original device does not need to rework. Disadvantage is accuracy is limited by cell volume. Still have even if photoelectric encoder: in addition to buy photoelectric encoder is installed on the main drive gear, pass through the gear rotation information, access to the rear wheel Angle. As glass lap blanket manufacturers, integrated the advantages disadvantages for instructions. Advantage is to obtain information accurate, high precision, set up easily. Disadvantage is to increase the rear wheel load; Large photoelectric encoder, lead to increased weight of the car.

Need many, many different kinds of speed sensor, the difference between choose, want to consider different working condition, if there is anything not clear customers in choosing speed sensor can be directly consulting manufacturers, manufacturers of the sales staff for you to choose suitable sensors.