Ultrasonic module failure detection method and electronic equipment

Abstract

The invention discloses an ultrasonic module failure detection method and electronic equipment. The method comprises the following steps: under the condition that the self-checking function of the ultrasonic module of the electronic equipment is started, applaying a sweep frequency voltage v1 to a loudspeaker in the ultrasonic module at a specific frequency point in a specific frequency band; obtaining a current i1 in a driving circuit of the loudspeaker under the v1, determining an impedance curve imS1 of the loudspeaker in a specific frequency band according to the v1 and the i1, determiningthat the loudspeaker works normally if the difference between the imS1 and a preset first impedance curve imS0 is within a preset first range, and otherwise, determining that the loudspeaker is abnormal. Compared with the prior art, in the embodiment of the invention, the failure detection of the ultrasonic module can be carried out on the basis of the device on the electronic equipment, the failure detection of the ultrasonic module can be realized without professional equipment except the electronic equipment, the detection cost is lower, in the detection process, a user is not influenced,and the use of the electronic equipment by the user is not influenced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic equipment, and in particular, to a method for detecting failure of an ultrasonic module and electronic equipment. Background technique [0002] With the development of communication technology, ultrasonic technology has been applied in electronic equipment, such as ultrasonic ranging, ultrasonic proximity sensing, gesture recognition, etc., accompanied by the failure detection of ultrasonic modules in electronic equipment. Since the audio signal can be intuitively felt by the user, the user can quickly respond to the problem of the electronic device during use, while the ultrasonic signal is outside the audible sound range and cannot be directly felt by the user. Therefore, the electronic device is required to have an ultrasonic module. Failure self-inspection function, in order to detect the abnormality of the ultrasonic module in time, feed back to the user and make corr...

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Problems solved by technology

[0004] Embodiments of the present invention provide a failure detection method of an ultrasonic module and electronic equipment to solve the technical problems in the prior art that the detection cost is relatively high and affect the use of electronic equipment by users

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