Last week, Tesla officially released its semi-electric truck Semi, which is probably the fastest-accelerating truck in history, and none of them.
The official introduction, Tesla Semi maximum load of 80,000 pounds (about 36.29 tons), full load under 0-60 miles (about 96 kilometers) to accelerate 20 seconds, full load under the top speed of 65 miles (about 105 kilometers), the power consumption per mile is less than 2kWh The rear axle is fitted with 4 independent motors.
In addition, Tesla Semi supports fast-charging (a dedicated MegaCharger charging station), which allows 400 miles (about 645 kilometers) of battery life within 30 minutes of charging. In other words, when the driver takes a short break, Semi can complete the charge, without waiting too much time.
So, how quickly does Semi accelerate under no-load conditions? According to the data, under the no-load condition, Semi's 100-km acceleration time only takes 5 seconds, which is already able to haul up most of the mainstream family cars.
Today, there is an accelerated video of Tesla Semi on the Internet. From the video point of view, Semi's acceleration is really fast under almost no-load conditions.
However, is it that trucks speed up too quickly?
However, due to technical and cost reasons, it is not widely used. In recent years, RFID technology has developed by leaps and bounds. With the development of large-scale integrated circuit and network communication technology, RFID technology has entered the commercial application field, and began to develop from the initial low frequency (125kHz) and high frequency (13.56mhz) to uHF (860 ~ 960MHz) and microwave. RFID technology has become one of the most promising information technologies in the new era because of its unique advantages showing great development potential and application space. In both low and high frequency bands, China has independently developed RFID chips in accordance with ISO14443 A, B and ISO15693 standards, which have been successfully applied in major projects such as city bus all-in-one card and second-generation resident ID card. However, in the uHF and microwave field, China started late, technology and products are still relatively short. In this context, this paper studies the design of 915MHz rf card reader. The system can be applied to vehicle monitoring, remote control, telemetry, access control system, identity identification, non-contact radio frequency smart card, wireless 485/232 data communication, safety and fire prevention and other fields.
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