The SEK-SensorBridge allows you to connect suitable Sensirion sensors to a computer. It works hand-in-hand with the SEK-ControlCenter software.
There are two ports on the SensorBridge, allowing you to connect sensors. You can connect more than one sensor to each port, provided that the sensors have different I2C addresses. Each port corresponds to an independent channel offering:
- I2C bus with speed up to 1MHz
- 1.2V – 5.5V selectable supply
- Power supply up to 250mA @ 5V
- 2x Analog in (0 – 5.5V)*
- 2x SPI bus with speed up to 2MHz*
The sensors are connected to the SensorBridge using a RJ45 connector. The schema in figure 2 shows the signal assignments for the two RJ45 ports.
The standard interface between the SensorBridge and a computer is an USB Virtual COM Port, using a standard USB micro connector. This offers a fast plug-and-play interface to your computer and works seamlessly with the SEK-ControlCenter software. You can connect several SensorBridges on a computer for simultaneous evaluation of multiple sensors, limited mainly by the power consumption of the sensors and the capability of the computer. A powered USB hub is a good option for expanding your system, if necessary.
Additionaly, you can connect the SensorBridge via a RS485 interface*, provided you also have a RS485 interface on your computer. This option allows connecting several SensorBridges on one bus and powering them by just one supply. Furthermore, long distances between the devices and a computer can be supported by the RS485 interface.
*These features are not supported by the SEK-ControlCenter software