In recent years, driverless cars Advanced Driver Assistance System (ADAS) have become very popular, many giant automobile companies have entered the industry. This raises the question: what hardware equipment and crystal oscillators do driverless automobiles require?
Self-driving cars utilize a combination of artificial intelligence (AI), visual computing, monitoring system modules, radar ranging system modules, and GPS global positioning modules to enable the car’s intelligent control system. What are the criteria for selecting crystal oscillators for these modules?
Hardware’s effective operation needs more stringent requirements for stability, accuracy, anti-interference. The chip, also known as the central processing unit (CPU), serves as the brain that handles data processing in the autonomous driving system of the car. The crystal oscillator is the electronic component that transmits signals to the CPU. It is feasible that the chip’s effective performance depends on the crystal oscillator’s continuous provision of a stable and accurate signal source.
Surveillance System Module
The self-driving car’s video surveillance system boasts multiple high-definition cameras to detect traffic signals and distinguish moving objects from surrounding vehicles, bicycles, and pedestrians with onboard computer assistance. SMD crystal oscillators 12MHZ, 16MHZ, 24MHZ, 27MHZ, 25MHZ, 30MHZ, and 54MHZ continuously send accurate and stable signals to the chip, which is the guarantee for high-definition video capture and transmission.
Radar Ranging System Module
The temperature-compensated crystal oscillator (TCXO) utilized in the Radar Ranging System Module guarantees accurate and stable transmission and reception of signals. By providing critical distance data on objects surrounding the vehicle, the Radar Ranging System aids the central processor in making timely and accurate responses, including emergency braking, deceleration, and avoidance.
GPS Global Positioning Module
The GPS Global Positioning Module accurately positions the moving car in real time and provides the central processor with real-time road conditions, buildings, traffic information, etc. The crystal oscillator frequency responsible for precise positioning is temperature-compensated crystal oscillator (TCXO) 26MHZ. The higher the accuracy, the better the stability and the more accurate the positioning.
Central Processing Unit
The role of the central processing unit (CPU) is to receive and process all the data coming from real-time images from car surveillance cameras, distance change data between the vehicle body and objects in the environment from the radar distance measuring system module, real-time GPS positioning data, etc.
The central data processing module serves as the system’s headquarters. Therefore, it necessitates a more stable frequency signal and a crystal oscillator with greater driving power. This specialized oscillator, known as the differential crystal oscillator, has the unique capability of outputting two frequency signals simultaneously. Additionally, it boasts high reliability and precision, making it a suitable component for the autonomous driving system.
About Manufacturer YXC
SHENZHEN YANGXING TECHNOLOGY CO., LTD (referred to as YXC) is an experienced crystal oscillator supplier and manufacturer. They mainly focus on frequency control products. Its automotive products have passed AEC-Q200 and IATF16949 automotive system certifications. Its products are widely used in automotive, communications, industry, medical and military industries. etc.
