Coaxial double-indicator stepping motor type temperature and humidity meter

Abstract

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.

Description

technical field [0001] The invention relates to a coaxial double-pointer stepping motor type temperature and humidity meter, which belongs to the technical fields of electronics, communication and information engineering. Background technique [0002] Temperature and humidity are closely related to human production and life, and are also the most common and basic process parameters in industrial and agricultural production, so it is necessary to measure and indicate them correctly. Usually, when people measure temperature and humidity, one of the measurement results is in the form of digital display, such as the invention patent: a temperature and humidity measuring instrument, application number: 201410286770.7, which adopts the form of liquid crystal display, and its display form is digital display, which is convenient for people Reads straight, but lacks dynamics. The other is to use a pointer indication form, such as a pointer thermometer for precise indication, applica...

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Problems solved by technology

Usually, when people measure temperature and humidity, one of the measurement results is in the form of digital display, such as the invention patent: a temperature and humidity measuring instrument, application number: 201410286770.7, which adopts the form of liquid crystal display, and its display form is digital display, which is convenient for people Reads straight, but lacks dynamics

The other is to use a pointer indication form, such as a pointer thermometer for precise indication, application number: 200620160514.4, although the pointer form is used to increase the dynamic effect, but it uses the hairspring to be deformed by the temperature change to make the main shaft rotate, which is a non-digital control. The indication accuracy cannot be high. It can be seen that the above two methods have relatively large defects.

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