Coaxial double-indicator stepping motor type temperature and humidity meter

The invention discloses a coaxial double-indicator stepping motor type temperature and humidity meter which comprises a temperature and humidity acquiring module, a single-chip microcomputer control module and a coaxial double-indicator stepping motor indicating module. The temperature and humidity acquiring module is a temperature and humidity sensor and converts to-be-measured temperature and humidity to an electric signal for processing by the single-chip microcomputer control module. The single-chip microcomputer control module converts a temperature number and a humidity number to pulse signals for outputting. A temperature instrument stepping motor and a humidity instrument stepping motor in the coaxial double-indicator stepping motor indicating module are respectively driven. The temperature instrument stepping motor and the humidity instrument stepping motor constitute double coaxial indicators through a gear and a shaft sleeve, thereby coaxially displaying the accurate temperature number and the accurate humidity number. The stepping motors are used as instrument movements, thereby improving instrument precision. Double coaxial indicators are used for simultaneously indicating the temperature value and the humidity value. A dynamic feeling is realized. The coaxial double-indicator stepping motor type temperature and humidity meter accords with the people's habit and furthermore the instrument space is saved.