Taijing Technology RTC Real time Clock Empowers Automotive Electronics - Multi scenario Applications and TR8804 Solution Analysis
In the morning, the smart car in the home is awakened by the touch of the mobile phone, and the air conditioner has been adjusted to the comfortable temperature in advance according to the travel habits.
When entering the expressway, the auto drive system system smoothly takes over the steering wheel and navigates the route to avoid congestion in real time.
Arriving at the basement of the shopping mall, the vehicle automatically recognizes the available space and completes parking. The central control screen displays the remaining range and charging station location prompts
Behind these "conveniences" and "accuracies" lies the "timing reference source" of electronic devices - Real Time Clock (RTC). With excellent product features such as ultra-low power consumption, extremely high precision, and continuous power-off operation, RTC has become the basic functional unit of multiple systems in automobiles.
Today we will talk about the important application scenarios of RTC in automobiles:
Car Clock
BMS (Battery Management System)
As one of the wake-up sources, trigger BMS to perform self check management on its own working mode (sleep, run...)
As a condition of the SOC algorithm, it is used to periodically correct the SOC
Calendar time, providing BMS with time coordinates (timestamps) corresponding to historical data and fault information
Car central control clock
The car center console is the place where comfortable entertainment devices such as air conditioning and audio are controlled. It includes various vehicle controllers such as the central control door lock system, central console, and audio control panel. RTC can directly provide real-time time information in the car central control, including year, month, day, hour, minute, and second; It can also provide time references for other functions.
in-vehicle camera
The vehicle monitoring system needs to record the accurate date and time of the event occurrence. Considering that cars cannot be connected to the network at all times, a separate RTC is needed to provide time holding function at low power consumption and abnormal logging function.
Vehicle mounted remote information terminal T-BOX
The vehicle mounted remote information terminal T-BOX (vehicle networking control unit) is the interaction hub between the car and the network. For the in car T-BOX, it also needs to meet the function of being a black box (event recording), so it is necessary to record important information such as time and car status events, and reliable time information is needed.
Smart Bluetooth key
The control functions of the in car intelligent Bluetooth key include: remote start/stop of the vehicle with a mobile phone and remote opening/closing of the car doors with a mobile phone. Mobile remote vehicle startup: Install an APP on the mobile phone and a terminal on the vehicle to achieve human vehicle interaction.
RTC provides a reference clock in the smart Bluetooth key module to accurately manage the validity period of the key.
Effectively calibrate the reference time of the vehicle key to ensure time matching and authentication of the Bluetooth key on the mobile phone.
ADAS
Advanced Driving Assistance System, abbreviated as ADAS. Satellite signals are highly susceptible to weather factors such as atmospheric gases, clouds, rain, fog, and strong electromagnetic signals; Ground satellite signal receivers (such as mobile phones, cars, etc.) are constantly moving and may be obstructed by high-rise buildings or tunnels. Based on a high stability local clock RTC, abnormal data caused by interference can be corrected to ensure stable positioning accuracy.
ECU
The electronic control unit (ECU) is the comprehensive control device of the engine. Its function is to calculate, process, judge, and output commands based on the various information input by the engine's sensors according to its stored program, and control the actions of relevant actuators to achieve the goal of fast, accurate, and automatic control of engine operation.
electric vehicle charging station
A charging station is a power station for electric vehicles. The charging station for electric vehicles uses AC and DC power supply methods and requires a specially designed charging card to be swiped. The charging station display screen can display data such as charging amount, cost, and charging time. The billing control unit module is the main component inside the charging station, usually using an ARM architecture embedded circuit board and a reliable Linux operating system. A stable and accurate system clock is an important guarantee for the operation of the operating system, charging billing, and accurate and reliable charging records, which is precisely the value of RTC.
TKD Product Solution
In response to the ultimate pursuit of high-precision, high reliability, and low-power clocks in the automotive industry, Taijing Technology has launched a highly reliable RTC product - TR8804. Its core is the use of MEMS tuning fork crystal resonators, integrated high-precision temperature compensation integrated circuit ICs, and high vacuum packaging in high-strength ceramic shells. The product can output high-precision second pulse signals and time data in the temperature range of -40~105 ℃.
△TR8804
Product features and applications include:
※ Built in high-precision 32.768kHz DTCXO
※ AEC-Q100&AEC-Q200 are applicable
※ Fixed cycle wake-up function
※ Time update interrupt function
※ Alarm can be set for weeks, Sundays, hours, and minutes
※ Timestamp function
From smart homes to Industry 4.0 production lines, from low altitude economy to rail transit, Taijing Technology's RTC products are accelerating their penetration into various industries with their high precision and low power consumption characteristics, becoming the "precision heart" of efficient operation in the digital age. In the future, with the accelerated development of technologies such as artificial intelligence, big data, and cloud computing, Taijing Technology will continue to innovate and iterate, providing reliable time benchmarks for the intelligent upgrading of various industries.
