The invention discloses a rotary
wireless electricity energy and
signal transmitting
system for a measurement-while-drilling instrument. Based on an
electromagnetic coupling technique and carrier wave communication theory, the rotary
wireless electricity energy and
signal transmitting
system is constructed at the short joint connection part of the measurement-while-drilling instrument, so that the
electricity energy transmitting and information interaction among short joints are realized safely and stably, and the rotary
wireless electricity energy and
signal transmitting
system comprises an electricity energy conversion circuit, a carrier wave communication circuit and an
electromagnetic coupling mechanism; low-frequency alternating-current electricity energy generated by a
mortar pulse power generator is subjected to
alternating current-
direct current-
alternating current conversion by electricity energy conversion circuits in power supply short joints, and electricity energy is transmitted to the control short joints by the
electromagnetic coupling mechanism in a non-
contact mode, so that the wireless transmitting of electricity energy among short joints of the measurement-while-drilling instrument is realized; to-be-transmitted signals are modulated, demodulated, analyzed and processed by a carrier wave communication circuit, so that the wireless interaction of information among the short joints of the measurement-while-drilling instrument can be realized; the complexity of a connecting mechanism among the short joints is reduced, unsafe factors and hazards of lead type and slide
ring type connecting
modes are eliminated, and the stability, safety and expandability are improved.