CN203629609U

CN203629609U - Temperature and humidity detection device

Info

Publication number: CN203629609U
Application number: CN201320739239.1U
Authority: CN
Inventors: 丁健; 李磊; 郑娟
Original assignee: Chuzhou University
Current assignee: Chuzhou University
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2014-06-04
Anticipated expiration: 2023-11-20

Abstract

The utility model discloses a temperature and humidity detection device comprising a single chip microcomputer AT89C51, and a temperature and humidity sensor DHT90, a liquid crystal display screen LCD1602 and a buzzer LS which are connected with the single chip microcomputer AT89C51 separately. The temperature and humidity detection device of the utility model has advantages of convenient utilization and high accuracy, and can be used to satisfy the measurement requirements of people on environmental temperature and humidity parameters.

Description

A kind of temperature-humidity detecting device

Technical field

The utility model relates to temperature-humidity detecting device field, is specially a kind of temperature-humidity detecting device.

Background technology

Along with improving constantly of people's quality of life, people also more and more pay close attention to for the living environment of oneself, and therefore in corresponding environment, the measurement of humiture requires also more and more higher.This just requires a kind of accurately pick-up unit of measurement environment humiture, to meet people, environmental parameter is measured to requirement.

Utility model content

The purpose of this utility model is to provide a kind of temperature-humidity detecting device, to meet people to ambient temperature and humidity parameter measurement demand.

In order to achieve the above object, the technical scheme that the utility model adopts is:

A kind of temperature-humidity detecting device, it is characterized in that: include single chip computer AT 89C51, Temperature Humidity Sensor DHT90, LCDs LCD1602, hummer LS, the VDD pin access power supply of described Temperature Humidity Sensor DHT90, the GND pin ground connection of Temperature Humidity Sensor DHT90, the P21 pin of the DATA pin access single chip computer AT 89C51 of Temperature Humidity Sensor DHT90; The VSS pin ground connection of described LCDs LCD1602, the VDD pin access power supply of LCDs LCD1602, the mobile terminal of a potentiometer R1 of VEE pin access of LCDs LCD1602, a stiff end access power supply of potentiometer R1, another stiff end ground connection of potentiometer R1, the BLA pin access power supply of LCDs LCD1602, the BLK pin ground connection of LCDs LCD1602, the D0-D7 pin of LCDs LCD1602 is the P00-P07 pin of corresponding access single chip computer AT 89C51 one by one; An input end access power supply of described hummer LS, the collector of a triode Q of another input end access of hummer LS, the emitter access power supply of triode Q, the base stage of triode Q accesses the P20 pin of single chip computer AT 89C51 by resistance R 3.

The utility model utilizes Temperature Humidity Sensor DHT90 as sensing element, can be accurately humiture parameter in measurement environment rapidly, have advantages of easy to use, accuracy is high, can meet the measurement demand of people to ambient temperature and humidity parameter.

Accompanying drawing explanation

Fig. 1 is the utility model structured flowchart.

Fig. 2 is the utility model single-chip microcomputer wiring diagram.

Fig. 3 is the utility model Temperature Humidity Sensor wiring diagram.

Fig. 4 is the utility model LCDs wiring diagram.

Fig. 5 is the utility model hummer wiring diagram.

Embodiment

As Figure 1-Figure 5.A kind of temperature-humidity detecting device, include single chip computer AT 89C51, Temperature Humidity Sensor DHT90, LCDs LCD1602, hummer LS, the VDD pin access power supply of Temperature Humidity Sensor DHT90, the GND pin ground connection of Temperature Humidity Sensor DHT90, the P21 pin of the DATA pin access single chip computer AT 89C51 of Temperature Humidity Sensor DHT90; The VSS pin ground connection of LCDs LCD1602, the VDD pin access power supply of LCDs LCD1602, the mobile terminal of a potentiometer R1 of VEE pin access of LCDs LCD1602, a stiff end access power supply of potentiometer R1, another stiff end ground connection of potentiometer R1, the BLA pin access power supply of LCDs LCD1602, the BLK pin ground connection of LCDs LCD1602, the D0-D7 pin of LCDs LCD1602 is the P00-P07 pin of corresponding access single chip computer AT 89C51 one by one; An input end access power supply of hummer LS, the collector of a triode Q of another input end access of hummer LS, the emitter access power supply of triode Q, the base stage of triode Q accesses the P20 pin of single chip computer AT 89C51 by resistance R 3.

Claims

1. a temperature-humidity detecting device, it is characterized in that: include single chip computer AT 89C51, Temperature Humidity Sensor DHT90, LCDs LCD1602, hummer LS, the VDD pin access power supply of described Temperature Humidity Sensor DHT90, the GND pin ground connection of Temperature Humidity Sensor DHT90, the P21 pin of the DATA pin access single chip computer AT 89C51 of Temperature Humidity Sensor DHT90; The VSS pin ground connection of described LCDs LCD1602, the VDD pin access power supply of LCDs LCD1602, the mobile terminal of a potentiometer R1 of VEE pin access of LCDs LCD1602, a stiff end access power supply of potentiometer R1, another stiff end ground connection of potentiometer R1, the BLA pin access power supply of LCDs LCD1602, the BLK pin ground connection of LCDs LCD1602, the D0-D7 pin of LCDs LCD1602 is the P00-P07 pin of corresponding access single chip computer AT 89C51 one by one; An input end access power supply of described hummer LS, the collector of a triode Q of another input end access of hummer LS, the emitter access power supply of triode Q, the base stage of triode Q accesses the P20 pin of single chip computer AT 89C51 by resistance R 3.