I'm looking for a wireless power solution that is not only able to transmit the power wireless form a base station to a sensors placed on top of the base station, but is also capable of transmitting data (for instance I2C or a UART-R/T signal) from the base station to the sensor (2 way communication) using the same coils for the wireless power. So want a "single chip transmitter" that has power input and a I2C (or UART) input and a single chip receiver that has a power output (for instance 3V3 or 5V ) and a I2C output (or UART output).
The idea is that the sensor has a I2C 18-24 bit A/D converter ) an I2C EEPROM for the calibration data and an I2C humidity and temperature sensor (or .. a MCU with intergrated 18- 24 bit AD converter and integrated/ EEPROM) .
There will be different base stations with different options for instance Digital outputs: RF, or RS485 or WIFI and so on, Analog outputs: 4-20 mA or 0-1V and so on Power connections : 220VAC or battery or solar panel and so on. The sensors are always the same and has the calibration data stored inside in an EEPROM or FLASH. The base stations can be different (depending on the customer)
The most important reason why I want this , is because the sensor has (almost) no room for electronics, and must be calibrated every year. The customer can take off the sensor from the basestation, replace it by (an calibrated) replacement, and send the (orignal) sensor to the manufacturer for re-calibration and it gives us more flexiblility to implement different options in the base station.
