Software and hardware development of intelligent temperature and humidity controller

2020-08-28 11:38:18 hongling

Intelligent temperature and humidity controller software and hardware development Program editing PCBA design and production description:




The temperature and humidity controller is based on an advanced single-chip microcomputer as the control core, and adopts imported high-performance temperature and humidity sensors. It can measure and control the temperature and humidity signals at the same time, and realize the LCD digital display. The lower limit is set and displayed, so that the instrument can automatically start the fan or heater according to the site conditions, and automatically adjust the actual temperature and humidity of the measured environment.




The action instructions are output through two normally open contacts, which truly makes the instrument intelligent and adaptable to complex and changeable site conditions, so as to achieve the purpose of effectively protecting the equipment. This instrument is suitable for high and low switch cabinets, terminal boxes, box-type substations and other cabinet types.


 Software and hardware development of intelligent temperature and humidity controller Program editing Main functions of PCBA design and production:


1. During normal operation, the current flowing into the protector does not exceed 0.1mA, which does not affect the normal operation of the CT.

2. When the voltage across A (or B, C) and N exceeds 150V, BT-CTB short-circuits A (or B, C) and N. 3. The contact capacity of the relay is greater than 15A, so when a fault occurs, the secondary side of the CT can be reliably short-circuited.

4. The relay contact has a hold function, and the protection can be released by pressing the "reset" button.

5. If the fault is removed under power failure, the device will automatically reset after power failure.

6. The device provides a pair of normally open contacts and a pair of normally closed contacts, which can be connected to various sound and light alarms or provided to a comprehensive protection device to transmit information remotely. When the protection is activated, the normally open is closed and the normally closed is open. Please refer to the installation and use introduction below for the wiring method.

7. Note that the humidification water pump is not used for a long time and there is water sediment that causes it to stop rotating. Turn the fan blade at the toggle port to make it rotate


 


Intelligent temperature and humidity controller software and hardware development Program editing PCBA design and production technical indicators

1Normal leakage current: <1mA

2. Turn-on voltage Uc: 150V10%

3. Turn-on time Ts: 50ms≤Ts≤250ms

4. Contact capacity of remote signaling relay: AC220V/5A

5. Protective relay contact capacity: AC220V/15A

6. CT specifications used: the peak value of the secondary side is greater than 150V

7. Protection current: ≥5A

8. Working environment: temperature: -20℃~70℃ humidity: ≤95%RH

9. Reset method: press "reset" to automatically "reset"

10. Seismic performance: 10~50-10Hz 2g 3min

11. Anti-interference: 4.4kV/M

12. Dimensions: BTZ-CTB701: 4848100 (mm)

13. Withstand voltage: 2kV 50Hz 1min

14. Installation method: panel, rail or fixed installation


 


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