"Traditional Chinese Medicine Finger" and its Bluetooth terminal overall design
The "Traditional Chinese Medicine" product combines traditional Chinese medicine music therapy with massage therapy. It uses advanced microelectronic technology to transmit music selected by music therapy through a Bluetooth wireless transmitter. The Bluetooth terminal is based on PowerWise technology to design a portable device with high efficiency. The energy-saving features combine the sound and color of the audio with the massage motor placed at a specific acupoint to achieve the purpose of dredging the meridians and rehabilitating the body and mind. The “Traditional Chinese Medicine†products effectively integrate cultural, health, technology and other fashion elements.
The "Traditional Chinese Medicine" product is mainly composed of the main control software Magic finger, Bluetooth wireless transmitter, and Bluetooth terminal. The main control software Magic finger interface is shown in Figure 1, including Bluetooth connection, recording guidance, massage relaxation, and playback. Guide and other buttons. The Bluetooth connection controls the Bluetooth adapter and the Bluetooth module on the finger to connect and pair. The recording guide is used to record the doctor's instructions and save it into the corresponding audio file for Bluetooth transmission. The playback guide calls the recording doctor's instructions to perform corresponding medical actions on the user. The massage relaxes and selects the soft and soft music designated by the doctor, and gives the user music therapy.
Figure 1 Magic finger interface
The Bluetooth wireless transmitter operates in the 2.4 GHz Industrial, ScienTIfic and Medical (ISM) band, which is plugged into the USB socket, as shown in Figure 2.
Figure 2 Bluetooth wireless transmitter
The "Traditional Chinese Medicine" Bluetooth terminal prototype is shown in Figure 3. It consists of a control module, a Bluetooth module, an audio module, an indicator module, and a motor control module. The control module is responsible for the configuration, control and background music playback of other modules; the Bluetooth module mainly completes the reception of audio data; the audio module amplifies and plays the sound audio; the motor drive module controls the motor; the indicator module controls the indicator light.
Figure 3 "Traditional Chinese Medicine" Bluetooth terminal prototype
Bluetooth terminal functional unit based on PowerWise technology
Energy efficiency is a key factor in the success of system design. According to the system architecture, we balance all factors in the four important indicators of performance, function, volume and power consumption to ensure that each unit's power consumption can achieve the highest performance. . Therefore, high-performance components are especially important. National's PowerWise family of products currently has more than 300 integrated circuits, all of which are energy-efficient chips that help improve system energy efficiency, low power consumption, heat dissipation, small size and longer battery life. "Traditional Chinese Medicine" Bluetooth terminal is based on PowerWise technology to design portable devices, using National Semiconductor's PowerWise series LM49370, LM4570, LM4675 and LP3952 and other devices, with high efficiency and energy saving features, its block diagram shown in Figure 4.
Figure 4 "Traditional Chinese Medicine" Bluetooth terminal block diagram
The audio power amplifier uses the PowerWise series LM49370, which is part of the Boomer audio power amplifier family's audio subsystem. It features spread spectrum technology, so electromagnetic interference is extremely low, and built-in Class D speaker amplifier, dual mode stereo headphone amplifier and Bluetooth support. The dedicated interface of the transceiver, its internal block diagram is shown in Figure 5.
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Figure 5 internal block diagram of the audio power amplifier chip LM49370
The stereo sound uses the PowerWise series LM4675, a 2.65W mono Class D audio power amplifier featuring spread spectrum technology, so the electromagnetic interference is extremely low, no need to add a filter, its internal block diagram is shown in Figure 6.
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Figure 6 Internal block diagram of stereo speaker chip LM4675
For portable products, system power consumption is one of the first concerns for manufacturers. The "Traditional Chinese Medicine" Bluetooth terminal is based on PowerWise technology, using the PowerWise series of products with adaptive voltage regulation (AVS) and threshold voltage regulation. Minimize the operation and leakage power of digital logic ICs while minimizing system overhead. The Bluetooth terminal adjusts the power supply according to the actual working needs of the independent processing units to reduce power consumption.
in conclusion
The "Traditional Chinese Medicine" design combines traditional Chinese medicine music therapy with massage therapy to provide health care functions such as dredging meridians and rehabilitating the body and mind. Because of their use of PowerWise devices, these PowerWise devices have multiple independently operated processing units, sometimes all of which operate at full speed, but sometimes some of them are idle or turned off. Since the power supply of each unit can be managed independently, the system power consumption is optimized.
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