Non-contact position sensing device and non-contact position sensing method

A non-contact position sensing device, comprising:

• a transmission unit configured to transmit a signal;
• a plurality of receiving units provided in different positions, each being configured to receive the signal reflected by an object;
• and
• a control unit configured to calculate a position of the object based on the received signals received by the receiving units,
• wherein the control unit switches between intensity position calculation to calculate a position of the object based on intensities of the received signals received by the plurality of receiving units without utilizing phase difference between the received signals, and phase position calculation to cause an intensity of the signal from the transmission unit to periodically change and calculate the position of the object based on phases of intensity changes of the received signals received by the plurality of receiving units, based on the intensities of the received signals, and utilizes a result of only either one of the intensity position calculation and the phase position calculation to determine a single position of the object.

A non-contact position sensing device, comprising:

• a transmission unit configured to move with an object and transmit a signal;
• a plurality of receiving units provided in different positions, each being configured to receive the signal;
• and
• a control unit configured to calculate a position of the object based on the received signals received by the receiving units,
• wherein the control unit switches between intensity position calculation to calculate a position of the object based on intensities of the received signals received by the plurality of receiving units without utilizing phase difference between the received signals, and phase position calculation to cause an intensity of the signal from the transmission unit to periodically change and calculate the position of the object based on phases of intensity changes of the received signals received by the plurality of receiving units, based on the intensities of the received signals, and utilizes a result of only either one of the intensity position calculation and the phase position calculation to determine a single position of the object.

A non-contact position sensing method, comprising:

• transmitting signals from a plurality of different positions;
• receiving the signals reflected by an object;
• and
• performing position calculation of the object based on the received signals,
• wherein in the position calculation, intensity position calculation to calculate a position of the object based on intensities of the received signals without utilizing phase difference between the received signals, and phase position calculation to cause, when the signals are transmitted, intensities of the signals to periodically change and calculate the position of the object based on phases of intensity changes of the received signals are switched from one to the other based on the intensities of the received signals, and a result of only either one of the intensity position calculation and the phase position calculation to determine a single position of the object.

A non-contact position sensing method, comprising:

• transmitting a signal;
• receiving the signals reflected by an object at a plurality of different positions;
• and
• performing position calculation of the object based on the received signals,
• wherein in the position calculation, intensity position calculation to calculate a position of the object based on intensities of the received signals without utilizing phase difference between the received signals, and phase position calculation to cause, when the signal is transmitted, an intensity of the signal to periodically change and calculate the position of the object based on phases of intensity changes of the received signals are switched from one to the other based on the intensities of the received signals, and a result of only either one of the intensity position calculation and the phase position calculation to determine a single position of the object.

A non-contact position sensing method, comprising:

• transmitting a signal from a position where an object is located;
• receiving the signals at a plurality of different positions;
• and
• performing position calculation of the object based on the received signals,
• wherein in the position calculation, intensity position calculation to calculate a position of the object based on intensities of the received signals without utilizing phase difference between the received signals, and phase position calculation to cause, when the signal is transmitted, an intensity of the signal to periodically change and calculate the position of the object based on phases of intensity changes of the received signals are switched from one to the other based on the intensities of the received signals, and a result of only either one of the intensity position calculation and the phase position calculation to determine a single position of the object.