A wireless power transmitting device comprising: a transmission coil configured to transmit a wireless power signal to a wireless power receiving device ; a driving driver configured to generate a wireless power driving signal which is a driving signal for the wireless power signal; a direct current sensor (123-1) configured to detect a direct current signal of the driving driver , the direct current signal being changed by a wireless power receiving signal including wireless power receiving information from a wireless power receiving device ; an alternating current sensor (123-2) configured to detect an alternating current signal of the transmission coil , the alternating current signal being generated by a wireless power receiving signal including wireless power receiving information from a wireless power receiving device ; and an alternating voltage sensor (123-3) configured to detect an alternating voltage signal of the transmission coil , the alternating voltage signal being generated by the wireless power receiving signal of the wireless power receiving device ; a signal processing unit configured to process at least two of: (i) the direct current signal and (ii) the alternating current signal and (iii) the alternating voltage signal from the direct current sensor (123-1) and the alternating current sensor (123-2) and the alternating voltage sensor (123-3); and a wireless power transmitting controller configured to obtain the wireless power receiving information through a signal on which signal processing is performed, wherein the wireless power transmitting controller is operable to indicate a reception state error only in the event that at least two of (i) the direct current sensor (123-1) and (ii) the alternating current sensor (123-2) and (iii) the alternating voltage sensor (123-3) are in an error state, wherein the wireless power transmitting controller is configured to control the driving driver on the basis of the wireless power receiving information. a transmission coil configured to transmit a wireless power signal to a wireless power receiving device ; a driving driver configured to generate a wireless power driving signal which is a driving signal for the wireless power signal; a direct current sensor (123-1) configured to detect a direct current signal of the driving driver , the direct current signal being changed by a wireless power receiving signal including wireless power receiving information from a wireless power receiving device ; an alternating current sensor (123-2) configured to detect an alternating current signal of the transmission coil , the alternating current signal being generated by a wireless power receiving signal including wireless power receiving information from a wireless power receiving device ; and an alternating voltage sensor (123-3) configured to detect an alternating voltage signal of the transmission coil , the alternating voltage signal being generated by the wireless power receiving signal of the wireless power receiving device ; a signal processing unit configured to process at least two of: (i) the direct current signal and (ii) the alternating current signal and (iii) the alternating voltage signal from the direct current sensor (123-1) and the alternating current sensor (123-2) and the alternating voltage sensor (123-3); and a wireless power transmitting controller configured to obtain the wireless power receiving information through a signal on which signal processing is performed, wherein the wireless power transmitting controller is operable to indicate a reception state error only in the event that at least two of (i) the direct current sensor (123-1) and (ii) the alternating current sensor (123-2) and (iii) the alternating voltage sensor (123-3) are in an error state, wherein the wireless power transmitting controller is configured to control the driving driver on the basis of the wireless power receiving information. <EOS>