Ultrasonic driving circuit and driving method and ultrasonic pulmonary function meter

Abstract

The invention discloses an ultrasonic driving circuit and driving method and an ultrasonic pulmonary function meter. The driving circuit comprises a processor, a boost driving module, a first transmitting and receiving module, a second transmitting and receiving module, a signal amplifying module and a power module supplying power to various modules, wherein the processor is separately connected with the boost driving module, the first transmitting and receiving module, the second transmitting and receiving module and the signal amplifying module; the boost driving module is separately connected with the first transmitting and receiving module and the second transmitting and receiving module; the signal amplifying module is separately connected with the first transmitting and receiving module and the second transmitting and receiving module. According to the ultrasonic driving circuit, voltage provided by the power module is boosted to driving voltage, and the driving voltage is adopted to drive the first transmitting and receiving module and the second transmitting and receiving module to transmit ultrasonic waves, thereby greatly reducing the energy consumption of the driving circuit; meanwhile, the battery volume can be reduced, thereby reducing the volume of equipment; the driving circuit can be widely used in the technical field of ultrasonic waves.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to an ultrasonic driving circuit, a driving method and an ultrasonic pulmonary function instrument. Background technique [0002] With the development of the economy, the environmental pollution has become more and more serious, causing more and more people to suffer from respiratory diseases. Pulmonary function test is one of the necessary examinations for respiratory diseases. The purpose of detecting abnormalities in the respiratory system is to measure lung function through a spirometer. It has important guiding significance for early detection of lung and respiratory diseases, such as chronic bronchitis, emphysema, bronchial asthma, and intermittent lung disease. [0003] The core technology of spirometer is sensor technology, with emphasis on flow sensor. Most spirometer flow measurements are now made with turbine or differential pressure sensors. The principle of the t...

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Problems solved by technology

[0005] However, when the current ultrasonic flow sensor is working, it needs to generate a continuous and fixed driving signal. This way of working requires more energy consumption. In this way, the ultrasonic flow sensor needs to work when it is connected to the mains, or it needs to be given to the ultrasonic The flow sensor wears a large battery device, which cannot achieve the portability of the ultrasound spirometer

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