Summary of Tyre pressure monitoring system using Bluetooth Low Energy
This article discusses a Tyre Pressure Monitoring System (TPMS) utilizing Bluetooth Low Energy (BLE) for real-time data display and improved road safety. It highlights the DA14585 SoC from SmartBond as a key component, offering ARM M0 core processing, extensive memory, and versatile power supply options suitable for automotive IoT applications.
Parts used in the TPMS:
- Tyre pressure monitoring system sensors
- Sub-GHz radio standards
- Bluetooth low energy connectivity module
- DA14585 SoC
- ARM M0 core
- 96 kB RAM
- Integrated microphone interface
- User interface display
Author: Maurizio Di Paolo Emilio
A tyre pressure monitoring system (TPMS) aims to monitor air pressure on various automotive systems. The most common TPMS sensors mainly use sub-GHz radio standards to transfer information to the vehicle’s computer. There are two different types: direct (dTPMS) and indirect (iTPMS). The use of bluetooth low energy (BLE) connectivity makes it possible offering a high performance. All information will be displayed in real-time by simple user interface with low power consumption. With low power consumption, applications can run on a small battery for many years. As result, it’s actually extremely positive when talking about M2M communication and automotive systems.
TPMS helps to avoid the tyre wear and improves road safety. Due to the advantages of a longer battery life and connectivity, DA14585 is suitable for IoT applications in various industries. The figure 1 show a typical block diagram for a TPMS system.
Bluetooth low energy for automotive industry
Connectivity, Intelligence and energy saving are the main features for the new generation of IoT devices. Luckily, SmartBond can achieve all these features. Especially relevant is one of the series, DA14585 SoC. It offers all benefits, such as, full support of all bluetooth standards, including version 5. Moreover, it is suitable for many applications, as remote controls, proximity tags, headlights, connected medical devices, smart home and smart automotive (Figure 2). The figure 2 shown the block diagram of DA14585, where is visualized the ARM M0 core and other peripherals.
With 96 kB of RAM and retention capability, DA14585 offers a wider memory than its predecessor in order to fully utilize standard features. Moreover, it also includes an integrated microphone interface for low-cost voice support. DA1485 supports a wide range of power supply voltages from 0.9 to 3.6 V. This range offers a wider choice of energy sources with a great design performance.
Read more: Tyre pressure monitoring system using Bluetooth Low Energy
- What is the primary function of a tyre pressure monitoring system?
A tyre pressure monitoring system aims to monitor air pressure on various automotive systems. - How does Bluetooth low energy benefit this project?
It offers high performance, displays information in real-time via a simple user interface, and ensures low power consumption. - Which specific SoC is highlighted as suitable for these IoT applications?
The DA14585 SoC is identified as suitable for IoT applications due to its long battery life and connectivity advantages. - Does the DA14585 support multiple Bluetooth versions?
Yes, it offers full support of all bluetooth standards, including version 5. - What are the supported power supply voltage ranges for the DA14585?
The device supports a wide range of power supply voltages from 0.9 to 3.6 V. - How much RAM does the DA14585 provide compared to its predecessor?
It provides 96 kB of RAM with retention capability, which is wider than its predecessor. - Can the DA14585 be used for voice support?
Yes, it includes an integrated microphone interface for low-cost voice support. - What types of industries can benefit from this technology?
It is suitable for IoT applications in various industries including smart home, connected medical devices, and smart automotive sectors.
