STEVAL-IHT001V2 恒温器套件提供了一个功能强大和低成本的控制冰箱、冰柜、冰箱/冰柜组合的ST解决方案（微控制器和交流开关）。Basic, defrost, and air circulation versions are configurable in order to address the low-end and medium-end cooling appliances market. It allows the control of a single-phase induction motor and a light bulb, and optionally, a defrost resistor and a fan, working on 220/240 VRMS, 50/60 Hz mains voltage. The thermostat kit is operational with 100/120 V RMS 50/60 Hz but the supply capacitor value must be modified.The board can operate in an ambient temperature range from 0 °C to 60 °C. The exact maximum temperature depends on the power of the loads. For demonstrative purposes a graphic user interface (GUI) has been developed. The connection between the PC and STM8S microcontroller, the MCU performing thermostat regulation, is achieved through a USB bus. As the STM8S is a low-cost MCU without an embedded USB peripheral, an additional MCU (STM32) has been used as a bridge between the PC and STM8S MCU, for demonstrative purposes only.关键特性
Low-cost solution for spark-free thermostats:
No need for a sealed version
Low-cost STM8S microcontroller for thermostat control
Low-cost capacitive power supply
High efficiency:
Refrigerator consumption reduction by adjusting and reducing the hysteresis threshold of the temperature
Improved efficiency by turning on the defrost resistor only when it's useful and not at each OFF cycle of the compressor (as done in some mechanical thermostats)
High system immunity:
Overvoltage protected ACS switches: ACST610-8FP for compressor control, ACS110-7SN for defrost resistor and ACS102-6TA for light bulb and fan
Class A criteria for IEC 61000-4-4 up to above 3 kV levels
Flexibility:
Development: program setting with PC interface to change firmware variables
Industrialization: end-of-production MCU programming thanks to FLASH, for soft upgrade and efficient MCU stock management
#板卡评测
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2012-11-02
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