WiMi Hologram Cloud Inc (WIMI)

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WiMi Designs A Variety of Chips For 3D Holographic LiDAR.

Source
https://www.newstrail.com/wimi-designs-a-variety-of-chips-for-3d-holographic-lidar/

December 13, 2022

WiMi is the first listed holographic AR stock with holographic technologies and applications and has been the industry leader for a long time. It develops commercial chips for IoT, XR, and AI. WiMi is also the first company to propose the theory of 3D holographic LiDAR technology and put it into R&D and design.

WiMi Hologram Cloud, Inc. (NASDAQ:WIMI) has designed and developed five chips based on 3D holographic LiDAR technology, all of which are designed with Bi-MOS structure, a new process technology that integrates bipolar transistors (BJT) and MOS devices on the same chip. This design structure combines the advantages of two devices on the same substrate because of WiMi’s chip design requirements that chips should feature high speed, high performance, and accuracy of various information processing, communication, and network circuits, etc. Therefore, the Bi-MOS structure is used.

In the Bi-MOS structure, the bipolar devices have the strong driving capability, high analog accuracy, and high speed but high power consumption and low integration, which cannot realize super large-scale integrated circuits. At the same time, MOS devices have weak driving capability, low speed but low power consumption, high integration, and high anti-interference capability.
In 3D holographic LiDAR applications, the two devices cannot meet alone because of the large amount of information, the need for accuracy, speed interference, and large-scale data integration processing. In high-performance digital and analog integrated circuits, Bi-MOS structure is an effective solution in 3D holographic LiDAR chip design with high speed and high integration and is a reliable technology for high-performance ultra-large scale integrated circuits.

The five chips designed by WiMi based on 3D holographic LiDAR technology are:
- a coherent 3D holographic LiDAR diffuse target detection chip,
- tunable 3D holographic LiDAR chip,
- 3D holographic LiDAR-based SLAM, and fusion positioning chip,
- vehicle-based 3D holographic LiDAR road cross-section measurement chip, and
- 3D holographic LiDAR chip for FMCW-oriented 3D holographic LiDAR light source phase noise compensation chip.
These will be used in engineering, construction, consumer products, and driverless industries.

In consumer electronics, WiMi’s 3D holographic LiDAR can be integrated into camera arrays for holographic spatial scan rendering or high-precision scanning of items to achieve AR applications. Of course, the current AR scanning technology combined with consumer electronics is not mature; this is because there is no professional chip to process it, so it can only generate relatively fuzzy and distorted digital imaging, but this also makes many people have great interest in developing this kind of technology, such as some entertainment, tools or engineering assistance applications that do not need high precision data. If integrated with a high-precision professional 3D holographic laser LiDAR’s chip will play a pivotal role in forming a high-precision restored digital image, and the fields that can be applied will be significantly expanded.

3D holographic LiDAR can also be applied together with HD camera systems and other sensors, such as combining with UAV mapping and satellite remote sensing technology to obtain ultra-high precision holographic 3D spatial images, which can be applied in professional mapping and related commercial applications, significantly improving the accuracy of the current mainstream LiDAR technology in the market and realizing high precision detection in space.

3D holographic LiDAR will also enhance and replace traditional LiDAR technology in autonomous driving. In recent decades, traditional LiDAR technology has been widely used in autonomous vehicle technology (such as adaptive cruise control systems). Traditional LiDAR technology can accurately map position and distance, speed-sensing pulsed laser solid-state beam to measure distance and give the vehicle The traditional LiDAR technology can accurately map the post and space, speed-sensing pulse laser and solid-state beam to measure the length and give the car control system to be efficient real-time feedback, but only at the level of L1/L2 autonomous driving.

WiMi’s 3D holographic LiDAR technology is designed and developed based on industry demand. 3D holographic LiDAR technology uses laser beam scanning feedback technology to measure the 3D holographic point position in the surrounding space relative to the sensor’s comprehensive scanning feedback. 3D holographic LiDAR can achieve tens of thousands of laser pulses per second, and 3D holographic spatial data efficiently feedback to the vehicle’s autonomous driving system so that the car can respond to road conditions, surrounding vehicles, pedestrians, and other obstacles.

For example, WiMi developed and designed a 3D holographic LiDAR light source phase noise compensation chip for FMCW to perform vital sign detection. The chip uses FMCW in combination with 3D holographic laser LiDAR technology, where the frequency sent by FMCW is a waveform that varies over time, usually linearly, and it can detect breathing through the chest or abdominal undulations. The thoracic undulation can be treated as a moving target, where inhalation is equivalent to motion toward the LiDAR signal and breathing is equal to moving away from the LiDAR signal, and the trajectory accuracy of the breathing motion can be obtained by decoherence is relatively high.

This can be used to avoid objects with vital signs in priority under emergencies triggered by automatic driving. Traditional LiDAR can only determine the attributes of object types through object appearance recognition. For example, the dummy on the roadside and the natural person cannot make sufficient distinctions and determination. Therefore, applying an FMCW-oriented 3D holographic LiDAR light source phase noise compensation chip will effectively improve the safety of autonomous driving.

Compared with traditional LiDAR systems, 3D holographic laser LiDAR can provide higher accuracy/resolution information for autonomous driving systems because it needs to generate more complex 3D holographic space. In addition, compared with high-precision camera-assisted LiDAR systems, because the laser pulse has more substantial penetration and can provide longer detection distance when the weather condition is poor, to provide autonomous driving with Earlier prediction and adjustment to react accordingly. When combining 3D holographic LiDAR data with positioning information, it is possible to map the vehicle’s surroundings fully.

For example, the SLAM and fusion positioning chip based on 3D holographic LiDAR developed and designed by WiMi is based on 3D holographic LiDAR simultaneous localization and mapping (SLAM: Simultaneous Localization And Mapping), 3D holographic LiDAR can obtain accurate distance and intensity information from the surrounding environment, which can be applied to high-precision map construction It can be used to high-precision map construction and map-based matching positioning, which can effectively enhance the control effectiveness and stability of satellite positioning in weak signal areas and improve the safety and soundness of autonomous driving by improving information accuracy and precision.

Laser LiDAR is already the primary auxiliary sensor for L3 autonomous driving technology, and it is believed that the richer spatial and environmental information provided by 3D holographic laser LiDAR will become the necessary primary sensor in L4-5 level autonomous driving technology.

What can be confirmed is that holographic technology will provide more high-precision applications in the future. WiMi starts from the bottom of 3D holographic LiDAR technology and combines with various industry fields to empower various applications and landing prospects. Holographic technology is now booming, and its application is developing in the direction of depth, gradually penetrating multiple areas.