The rise of wearable devices, smart homes and the Internet of Things has made Bluetooth even more attractive to manufacturers. According to the IHS report, shipments of Bluetooth smart devices will grow from 165 million in 2014 to 1.2 billion in 2018, a compound annual growth rate of 64%. According to statistics, in 2014, 61% of Bluetooth smart devices have introduced Bluetooth modules. The Bluetooth module brings many conveniences to the development and design of intelligent hardware.
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What kind of convenience does the introduction of the Bluetooth module bring to the design of smart hardware? Let's see what the experts say. Mr. Zhu Xionghui, currently the regional market manager of Cypress, stated:
1. The biggest advantage of the low-power Bluetooth module to customers is that it can significantly reduce the time to market for customers. Just like Cypress has already done wireless authentication for its bluetooth module in many countries around the world, this product only needs the last customer to do the appearance declaration to the relevant organization to be able to use bluetooth logo. Customers can save 6 months or more. At the same time, the Cypress low-power Bluetooth module can help customers reduce the cost of international certification of Bluetooth products.
2. The low-power Bluetooth module guarantees the performance of the product. Especially for the RF performance, it does not require customers to invest in manpower and resources to conduct R&D and pilot production of antenna matching designs and PCB anti-jamming designs. These are especially attractive to OEMs that lack RF design capabilities and have high requirements on product reliability.
3, low-power Bluetooth module powerful, small size. Cypress's low-power Bluetooth module strongly demonstrates this. Cypress's low-power Bluetooth module, the 10x10, is as large as an ordinary chip and can easily fit into any mini embedded device. At the same time with an open ARM M0 MCU, not only radio frequency, can also be a small system design; with CapSense function, can easily do capacitive touch and proximity sensing; with Flash structure, can be reconfigured firmware; with ADC, Timer, PWM and other resources are used by the system.
Since a small Bluetooth module has so many benefits for smart hardware design, how can you better use the Bluetooth module to get the smart hardware products you expect? There are the following points you need to pay attention to.
1. If the customer only uses it as a BLE radio, the design only needs to focus on the customer's MCU and the interface of the module is I2C, SPI or UART. According to the available MCU interface, different firmware can be burned into this module. However, as with all wireless product designs, it is best to note that the antenna of the module is best not shielded by metal.
2, if the customer regards this module as MCU to make the small system design, if BLE remote control, mouse,etc., will use the MCU and corresponding GPIO in the module. Zhu Xionghui emphasized in particular: "In this case, PSoC Creator, the Cypress integrated development environment, can be used to configure and program the system."
Of course, power consumption and size are also major issues that current wearable devices have to consider. This also puts higher requirements on the design of the Bluetooth module. Size, the experience of Cypress is very worth learning, Cypress's modules do 10x10x1.8mm. Manager Zhu pointed out: “We have to do a lot of work on the PCB and various device selections before we can make the size so small. Power consumption depends on the effective power management of the BLE chip in the module. For this, Cypress BLE The chip provides five different operating modes, such as 60nA for power consumption in Stop mode, 150nA for Hibernate mode, and 1.3μA for Deep-sleep mode, which meets the most demanding requirements. Low power requirements."
With regard to the present and future of the Bluetooth module, Zhu Xionghui elaborated: Cypress is the only company that currently has both a chip and a module. Based on the understanding of the chip, its Bluetooth module can exert its performance and advantages. As the first BLE module of Cypress, EZ-BLE PRoC is mainly used in IoT application scenarios such as smart homes, remote controls, and instruments and meters that need to manage peripherals with mobile phones. It can not only do pure RF, but also MCU+RF RF. Followed by the use of a capacitive touch sensor on top, it can be used as a capacitive key and proximity sensor, so it is suitable for touch buttons such as smart desk lamps and smart fans. Modules enable many smart devices to be available on the market in a short period of time. In addition, capacitive touch and other auxiliary functions (ADC, TCPWM) enable the series of modules to be recognized by customers in a very short time and used for design. . In the near future, Cypress will have a number of different Bluetooth low-power modules on the market. The large series will be divided into PRoC-BLE and PSoC-BLE, which will later support wider temperature (-40-105 degrees Celsius).