the design of the radar for back running vehicle of MSP430

Description: The development of advanced driving assistance systems and automotive electronics is increasingly reliant on interconnected technologies. A new radar system for reversing vehicles is designed to perform serial range finding and accurately measure the distance to obstacles, while also possessing communication capabilities to transmit data to the vehicle's bus system. Previous designs for reversing radar systems were relatively simplistic in functionality. The new radar system incorporates the high-performance, ultra-low power consumption MSP430F2274 microcontroller, addressing the limitations of earlier models. The overall design utilizes ultrasonic range finding principles, which typically consist of a transmitter, receiver, and signal processing unit. During operation, the ultrasonic transmitter emits a pulse, while the receiver detects the reflected waves from obstacles. By measuring the time it takes for the ultrasonic waves to return, the distance to the obstacles can be calculated based on the speed of sound. This non-contact detection method is advantageous as it is unaffected by light conditions and has low construction costs. The integration of the MSP430F2274 microcontroller allows for an efficient and user-friendly reversing radar system. This microcontroller features 32KB of flash memory and 1KB of RAM, eliminating the need for external memory expansion. A 32.768 kHz crystal oscillator serves as the clock source for the system's basic timer.

The radar system's hardware architecture centers around the MSP430F2274 microcontroller, supported by peripheral circuits including ultrasonic transmission and reception circuits, an acousto-optic alarm circuit, a communication interface, and a keyboard-LCD interface. The system's block diagram illustrates the interconnection of these components, highlighting the efficient design that contributes to the overall functionality of the reversing radar system. The MSP430F2274's low power consumption and versatile features make it an ideal choice for this application, enabling effective range finding and obstacle detection in a compact and cost-effective package.It is developed that the ones that assist driving system intelligent improvement and car electronic system that demand to the car as people are networked, new radar for back running vehicle should can serial range finding and reveals the distance of obstacle, and have communication functions, can send the data to the bus line of car. The past radar for back running vehicle designs components and parts used to be more, the function is relatively simple too. The radar for back running vehicle on the basis of the new high performance ultra low power consumption one-chip computer MSP430F2274 that this text introduces can remedy the deficiency of the past products. The overall design system of system adopts the ultrasonic range finding principle. The ultrasonic range finding instrument is generally made up of projector, receiver and part of signal processor three.

While working, the ultrasonic transmitter sends out the supersonic pulse, the ultrasonic receiver receives and meets the backward wave that obstacles reflected back, measure supersonic wave and reflect the time to return from launching to meeting obstacles accurately, according to the ultrasonic propagation velocity, can calculate the distance of obstacles. As a non-contact type detection mode, supersonic wave have the intersection of air and the intersection of propagation attenuation and light, reflecting capacity and the intersection of penetrability and better characteristic.

Ultrasonic range finding does not is influenced by light and sleet fog, bes simple in construction, makes convenient and cost low grade advantage within the range of close quarter. The high-performance one-chip computer combines ultrasonic range finding, can realize the powerful radar for back running vehicle easy to use.

16 one-chip computer MSP430F2274 power consumption of TI Company are extremely low, resources are abundant on one, utilize JTAG interfacing at the same time, can to the intersection of flashing memory and convenient programming on the scene, benefit staging of software, very suitable as radar system of roll back microcontroller. The block diagram of the radar system of roll back is shown as in Fig. 1. System block diagram of radar for back running vehicle of Fig. 1 The systematic design system of the hardware regards MSP430F2274 microcontroller as the core, the peripheral circuit is made up of ultrasonic transmitting circuit, ultrasonic receiving circuit, acoustooptic alarm circuit, communication interface circuit, keyboard LCD circuit five part, introduce one by one as follows.

Roll back radar system top management circuit diagram of Fig. 2 The top management circuit diagram of the system is shown as in Fig. 2. MSP430F2274 chosen in this system has 32Kb flashing memory and 1Kb RAM on-chip, so needn`t expand the memorizer outside! Outer 32. 768kHz bestirs oneself brilliantly as the clock source of CPU inactive state Basic-Timer, serves as vehicle carried clock of the system at the same time.

The ones that assist driving system intelligent rise and car electronic system that require to the car with people are networked develop, new radar for back running vehicle should can serial range finding and reveals the distance of obstacle, and have communication functions, can send the data to the bus line of car. The past radar for back running vehicle designs components and parts used to be more, the function is relatively simple too.

The radar for back running vehicle on the basis of the new high performance ultra low power consumption one-chip computer MSP430F2274 that this text introduces can remedy the deficiency of the past products. The overall design system of system adopts the ultrasonic range finding principle. The ultrasonic range finding instrument is generally made up of projector, receiver and part of signal processor three.

While working, the ultrasonic transmitter sends out the supersonic pulse, the ultrasoni