Abstract: A low cost position sensor and a mobility device using the same are provided. The low cost position sensor comprises a rollable object, a container and a control circuit. The rollable object comprises a specific material. The container has a non-planar inner bottom portion. At least one sensor for detecting coordinates is disposed inside the container. The rollable object is disposed in the container. The sensor can detect the specific material. The control circuit is coupled to the sensor. The sensor detects the specific material to determine a coordinate position of the rollable object, and sends the coordinate position of the rollable object back to the control circuit. The control circuit determines a tilt angle of the container according to the coordinate position of the rollable object.

Abstract: A low cost position sensor and a mobility device using the same are provided. The low cost position sensor comprises a rollable object, a container and a control circuit. The rollable object comprises a specific material. The container has a non-planar inner bottom portion. At least one sensor for detecting coordinates is disposed inside the container. The rollable object is disposed in the container. The sensor can detect the specific material. The control circuit is coupled to the sensor. The sensor detects the specific material to determine a coordinate position of the rollable object, and sends the coordinate position of the rollable object back to the control circuit. The control circuit determines a tilt angle of the container according to the coordinate position of the rollable object.

Abstract: An active three-dimensional positioning device and a control system for floor-cleaning robot are provided in the present invention. The active three dimension positioning device includes a radio frequency (RF) receiver array, a radio frequency emitter and a control circuit. The RF receiver array includes a plurality of RF receivers for receiving a RF pulse. The RF emitter is used for emitting a RF pulse. The control circuit is coupled to the RF receivers. The control circuit transmits a transmission command to the RF emitter, after the RF emitter receives the enable RF signal, and the RF emitter emits the RF pulse. The control circuit calculates the position between the RF receiver array and the RF emitter according to the positions of the RF receivers and the time when each of the RF receivers receives the RF pulse.

Abstract: A self-balance mobile carrier is provided in the present invention. The self-balance mobile carrier includes a first direction load cell, a second direction load cell, a third direction load cell, a fourth direction load cell, a motion apparatus and a control circuit. Each of the load cells respective include a pressure-sensing plane and an electrical signal output terminal, for respectively converting the pressure on the pressure-sensing plane to an electrical signal and outputting the electrical signal to the electrical signal output terminal. The control circuit is coupled to the electrical signal output terminals of the first, second, third, and fourth direction load cells and the motion apparatus. The control circuit changes the moving direction of the motion apparatus according to the difference of the electrical signals of the first, second, third, and fourth direction load cells.

Abstract: A low cost electrical stamp is provided in the present invention. The low cost electrical stamp includes a magnetic cylinder matrix, a print circuit board (PCB), a control circuit and an interface circuit. The magnetic cylinder matrix includes a plurality of magnetic cylinders. The PCB includes a plurality of electromagnets whose positions are corresponding to the positions of the magnetic cylinders. The control circuit is coupled to the electromagnets of the PCB to control the magnetic field direction of the electromagnets. The interface circuit is coupled to the control circuit to couple to a computing device. When the low cost electrical stamp is coupled to the computing device through the interface circuit, the computing device programs the control circuit by a diagram. The control circuit magnetizes the electromagnets to change the positions of the magnetic cylinders according to the diagram.