Golf club having sensor unit

A sensitive golf club, comprising:

• a golf club;
• and
• a sensor unit attached to the golf club;
• the sensor unit including:
• a battery;
• a sensor module configured to receive power supply from the battery, and measure sensor data indicating a state of the golf club;
• and
• a control unit configured to receive power supply from the battery, and control operation of the sensor module;
• the sensor unit having an A mode, and a B mode in which operation of the sensor module is suppressed compared to the A mode;
• the control unit is configured to judge whether or not the golf club is prepared for a shot based on the sensor data, and execute processing of at least one of below (1) and (2);
• (1) being processing where, in the B mode, when judged that the golf club is prepared for a shot, the sensor unit is switched to the A mode, and when judged that the golf club is not prepared for a shot, the sensor unit is not switched to the A mode;
• and
• (2) being processing where, in the A mode, when judged that the golf club is not prepared for a shot, the sensor unit is switched to the B mode, and when judged that the golf club is prepared for a shot, the sensor unit is not switched to the B mode.

A golf measurement program causing a control unit included in a sensor unit attached to a golf club to execute:

• supplying power from a battery included in the sensor unit to a sensor module included in the sensor unit, and through the sensor module, measuring sensor data indicating a state of the golf club;
• supplying power from the battery to a communications unit included in the sensor unit, and through the communications unit, wirelessly transmitting the sensor data to an external device;
• and
• judging whether or not the golf club is prepared for a shot based on the sensor data, and executing processing of at least one of below (1) and (2);
• the sensor unit having an A mode, and a B mode in which operation of the communications unit is suppressed compared to the A mode;
• (1) being processing where, in the B mode, when judged that the golf club is prepared for a shot, the sensor unit is switched to the A mode, and when judged that the golf club is not prepared for a shot, the sensor unit is not switched to the A mode;
• and
• (2) being processing where, in the A mode, when judged that the golf club is not prepared for a shot, the sensor unit is switched to the B mode, and when judged that the golf club is prepared for a shot, the sensor unit is not switched to the B mode.