The Chili module is an ultra-low-power miniature IoT reference platform featuring Cascoda's 2.4Ghz IEEE802.15.4 long range wireless modem and Nuvoton's NANO120 cortex-m0 MCU, a micro-USB connector and a battery charger. The module measures just 25x13mm.
This customer-programmable reference design acts as a fully featured IoT end-node for sensing and measurement, that boasts extended range and ultra low power consumption when powered from a rechargeable lithium battery (pictured).
The purpose this evaluation module is to allow scientists and engineers in the design of low power IoT end-node products.
Applications include sensing and measurement in home, building and industrial automation, as well as a remote tag for application in security, transport and agriculture.
The evaluation kit ships with a temperature sensing application example, described below.
Demo Software Coordinator Function:
When connected to USB the module is powered by the USB power and starts up with the temperature sensing application disabled (normal mode). In this mode the module can run IEEE 802.15.4 MAC and PHY tests using Cascoda's GUI interface for communications. When pushing switch SW2 (on the same side of the board as the LED) the module switches between normal mode and temperature sensor network coordinator mode. In coordinator mode the application software creates a simple network using a fixed PAN identifier and coordinator address. It starts up by performing an energy scan on all 16 2.4GHz channels and selects the one with minimum energy level in order to avoid interference. It then waits for temperature sensing devices to be detected. Once a sensing device has been detected, the data sent by the device is displayed in the GUI. A maximum of 32 sensing devices can be connected to a coordinator device. It is recommended to have only one module acting as a coordinator. The coordinator device detects if the communications link to a sensing device has been lost within a time-out of 30 seconds, and disconnects the specific sensing device from the network if this is the case.
Demo Software Sensor Function:
When starting up by connecting the battery or unplugging the module from a USB connection, the module automatically switches into battery-operated mode and starts as a temperature sensing device. The device is in power-down mode most of the time and wakes up every 10 seconds. Initially it looks for a network coordinator by performing an active scan and looking for beacons. Once a valid beacon has been detected, it associates with the coordinator and starts transmitting data. It takes a temperature reading from the Nano120 temperature sensor, measures the battery voltage as well as the incoming RF link quality (LQI) and transmits the data to the coordinator.
The Chili module is programmable using the Nuvoton In System Programmer (ISP) over USB, and by JTAG.
Leider gibt es für diesen Aussteller kein deutsches Firmenprofil.
Cascoda is a fabless semiconductor company, supplying low-power IEEE 802.15.4 semiconductor radio devices based on a revolutionary technology. Cascoda has solved one of the fundamental problems in low power wireless communications, namely the problem of range versus power consumption.
Cascoda’s solution to this problem is a technology that delivers the combined benefits of an increase in range and a reduction in power consumption, compared with the previous state of the art. This is achieved by listening harder.
To date, wireless home and building automation systems have seen limited adoption, despite the technology being widely available. This is mainly because existing inexpensive semiconductor radio devices are unable to effectively deliver both whole-house coverage and low power consumption while operating at the global 2.4GHz band.
Why not shout louder?
Many systems manufacturers have chosen to overcome the problem of range limitation by using external power amplifiers. These power amplifiers use specialist semiconductor technologies, and are typically around 20% efficient. Hence, in order to achieve whole-house coverage, such systems pay a significant penalty in terms of equipment cost and power consumption.
What about mesh networks?
Another way of overcoming the limit of range is to utilize mesh networking. This allows radio nodes to route data, thereby increasing system range. Mesh networking works well in some circumstances, but it necessitates a complex protocol stack and nodes that are always powered on. Hence, in order to achieve whole-house coverage, mesh networking systems pay a significant penalty in terms of installation cost and power consumption.
Solution: Listening better
Cascoda’s bat™ technology is unique in that it delivers whole-house coverage by listening better. This technology is based on a completely new type of radio receiver which delivers much improved receive sensitivity for no penalty in power consumption, as compared to with the current state of the art. bat™ technology is fully compliant with existing standards, including mesh networking.