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Infrared LED drive circuit and VR camera using the same

An LED driving and infrared technology, applied in the field of VR cameras, can solve the problems of low infrared LED work efficiency, asynchronous exposure of VR cameras, affecting user experience, etc. Effect

Pending Publication Date: 2018-01-26
CHENGDU GUOYI ELECTRONICS TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the infrared LED driving circuit in the existing VR camera has the problems that the adjustment of the infrared LED is not synchronized with the exposure of the VR camera, the working efficiency of the infrared LED is low, and the power consumption is high, which greatly affects the user experience and causes problems for people to use. great inconvenience

Method used

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  • Infrared LED drive circuit and VR camera using the same
  • Infrared LED drive circuit and VR camera using the same

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Embodiment

[0027] Such as figure 1 , 2 As shown, an infrared LED drive circuit includes a PWM control circuit, a sampling feedback circuit, a MOS tube switch circuit, and an infrared LED, wherein the PWM control circuit receives an external PWM signal, and the PWM control circuit outputs the same duty cycle and Frequency switch control signal, external PWM signal can be generated by a circuit composed of FPGA and peripheral components.

[0028] In this embodiment, the infrared LED drive circuit also includes an input filter circuit and an output filter circuit, which are used to improve the stability of the input power supply and output power supply of the PWM control circuit; the input filter circuit includes a first input filter circuit circuit and a second input filter circuit, the first input filter circuit includes a capacitor C1 and a capacitor C2 connected in parallel between the input power supply and the VIN terminal of the controller U1, and the second input filter circuit inc...

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Abstract

The invention provides an infrared LED drive circuit and a VR camera using the same, solving the problems that in the infrared LED drive circuit in an existing VR camera, adjusting of infrared LEDs and exposure of the VR camera are not synchronous, and the infrared LEDs are low in work efficiency and high in power consumption, and are not convenient to use. The infrared LED drive circuit includesa PWM control circuit, a sampling feedback circuit, an MOS transistor switching circuit and infrared LEDs, wherein the PWM control circuit includes a controller U1, a resistor R1, a resistor R6, a resistor R4 and a resistor R7; the sampling feedback circuit includes an N-MOS transistor Q3, a resistor R2, a resistor R3, a resistor R8 and a diode D1; and the MOS transistor switching circuit includesa triode Q2 and a P-MOS transistor Q1. The infrared LED drive circuit can realize synchronization of adjusting of the infrared LEDs and exposure of the VR camera, thus greatly improving the user experience degree, avoids the situation that the infrared LEDs are always in the lightened state, thus reducing the power consumption and prolonging the service life of the infrared LEDs, is high in practicality, is simple in structure, is good in the user experience degree, and is suitable for application and usage.

Description

technical field [0001] The invention relates to the field of VR cameras, in particular to an infrared LED driving circuit and a VR camera using the circuit. Background technique [0002] VR (Virtual Reality) technology is a computer simulation system that can create and experience a virtual world. It uses a computer to generate a simulated environment, and uses multi-source information fusion, interactive 3D dynamic vision and system simulation of entity behavior to make users Immerse yourself in this simulated environment. [0003] With the rapid development of VR technology, optical positioning technology has been widely used. VR cameras capture marked points on objects, and the marked points reflect infrared light emitted by VR cameras. Multiple VR cameras collect the positions of marked points from different angles. It is transmitted to the computer, and after the useless information is filtered through the visual algorithm, the position of the mark point is obtained; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCY02B20/30
Inventor 庄华军
Owner CHENGDU GUOYI ELECTRONICS TECH CO LTD
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