Headband used for virtual reality glasses
A technology of virtual reality glasses and headbands, which is applied in the field of virtual reality technology and wearable computing, and can solve the problems of low height, no sensor, easy to cause shaking comfort, etc.
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Embodiment 1
[0034] The headband for virtual reality glasses provided in the present invention, the headband includes a headband structure and a headband circuit, and is characterized in that: the headband structure includes: an annular protective pad, a long strap arranged horizontally, Short straps set horizontally, vertical straps set vertically; headband circuit includes: EEG signal test electrodes, temperature and humidity module, vibration module, PPG sensor, pressure sensor, lithium battery, main controller, processing circuit and Bluetooth module.
[0035] Such as figure 1 As shown, the headband circuit includes the following: 1.1 is the EEG signal test electrode 1, 1.2 is the EEG signal test electrode 2, 1.3 is the EEG signal test electrode 3, 1.4 is the EEG signal test electrode 4, and 1.5 is the EEG signal test electrode 1. Signal test electrode 5, 1.6 is EEG signal test electrode 6, 1.7 is EEG signal test electrode 7, 1.8 is EEG signal test electrode 8, 1.9 is EEG signal test ...
Embodiment 2
[0044] The microcontroller uses the STM32 processor, model STM32F103RBT6, introduced by ST (Standard Microelectronics). This type of processor is 32-bit RSIC (reduced instruction set), Cortex-M3ARM core, 72Mhz operating frequency, high-speed embedded memory (Flash memory reaches 128Kbytes, SRAM reaches 20Kbytes), there are multiple enhanced I / Os and interfaces connected to Two APB buses. This family provides two 12-bit ADCs, three general-purpose 16-bit timers and a PWM timer. This series also has rich interfaces: 2 I2C and SPI, 3 serial ports, a USB and CAN bus.
[0045] The EEG signal testing electrode is a needle electrode, wherein the length of the microneedle is between 20-100 μm, which can not only penetrate the stratum corneum to obtain effective EEG signals, but also effectively prevent the scalp from being damaged. According to the characteristics of the EEG signal, the amplifier with high input impedance, high common mode rejection ratio and low noise is selected, ...
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