Temperature and humidity measuring device in power distribution cabinet

• Main Authors: JIN LIER, YANG SHICHEN, ZHANG JIAN, ZHI YUQING, CHEN QI, XIE JUN, WANG KAI, ZENG ZHENG, LIAO WEN, XIE LEI, ZHANG CHI
• Format: Patent
• Language: English
• Published: 08.04.2015
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The invention discloses a temperature and humidity measuring device in a power distribution cabinet in the field of power transmission and distribution. The temperature and humidity measuring device comprises a temperature and humidity sensor, a host machine and a power supply, wherein a power supply end, a grounding end, a data end and a clock end are arranged on the temperature and humidity sensor, the power supply end is connected with a power supply, the grounding end is grounded, the data end is connected with the host machine through a data bus, the clock end is connected with the host machine through a clock bus, a resistor with the resistance value being 47 kilo ohms is arranged between the power supply and the data bus, and the power supply is grounded through a capacitor with the capacitance value being 0.1muF. After a relay used for controlling the on-off state of a heater is connected with the temperature and humidity measuring device, the conduction and closing time of the relay can be precisely regulated according to temperature and humidity change, and the temperature and humidity in the power distribution cabinet are enabled to be in the reasonable range.