帮忙用英文翻译下这篇摘要
发布网友
发布时间：2022-04-22 05:32
共2个回答
热心网友
时间：2023-09-20 15:03
Traditional mechanical speedometer output power from the wheels, worm gear drive shaft driven by the flexible shaft tip synchronous rotation, so that the other side of the fixed and flexible shaft of the permanent magnet synchronous rotation followed, resulting in rotating magnetic field of the magnetic field in the rotating disk, it disk rotation speed so that, together with the table pointer to the occurrence of the deflection. When the electromagnetic torque and resistance torque generated by the spring balance, the indicators remain at a deflection point of view. Pointer deflection is proportional to angle and speed, so that its speed can be used.
Mechanical defects in the speed table is obvious. As the dial indicator shaft deflection is proportional to the degree of rotation of the magnetic force generated, when a lower speed, the magnetic force smaller, with larger fluctuations in speed changes. Therefore, the low-speed table pointer when the swing's intense, measurement and display accuracy is not high. The rear engine vehicle, the speedometer pointer to the deflection by the transmission power transmitted by flexible shaft, such as driver's cab, a long flexible shaft arrangement is bound to, how long will such a rotating shaft from the structural arrangement of properly, is certainly a very difficult task. In addition, the traditional mechanical speedometer all the defects, the instrument has graally been eliminated
This article describes the design of the speed and odometer to the smallest single-chip microcomputer system and the Hall sensor at the core. Different speed sensor into the different frequency pulse signal input to the control and calculation of single-chip, and then show that the use of LED moles, making the speed of electric bicycle mileage data and visual display to the user.
The system by the Hall sensor, RC filter circuit, microcontroller AT89S8252, systematic LED display mole, data storage circuit. Hall sensor which includes signal amplification and waveform shaping. Treatment of test signals to enlarge the purpose of treatment is to rece the magnitude of the signal measurement requirements; wave transformation and wave shaping circuit is used to convert the amplified signal can be connected with the single-chip TTL signal; through the MCU can set up internal Timer T1 input pin T0 pulse control, this can be calculated accurately pin T0 added to the unit time detected pulses; design speed display using LED moles, obtained through the conversion rate of mileage using I2C bus and through E2PROM to store not only save the required mouth-line single-chip microcomputer and peripheral devices, as well as simplifying the display part of the software programming
In this paper, among the first to design the necessary equipment odometer detail of the design problems are described; the latter part of the hardware and software design and the realization of made a serious analysis; and then gives the system modeling process and the corresponding system model, on the basis of a control simulation, and simulation results are compared.
The odometer of the design is simple in structure, low costs, and show the clear advantages of stable and reliable. And can be expanded to include the function of table speed, and more convenient to understand the situation you are now.
Key words: single-chip, LED digital tube, Hall sensor, EEPROM memory.
热心网友
时间：2023-09-20 15:03
The traditional mechanical watch is the speed of the drive wheels power output, soft shaft drive axle of rotor head, make the synchronization with soft shaft rotation at the other end of the fixed with synchronous rotation permanent magnets, resulting in a rotating magnetic field the magnetic disk, turning to rotation speed table pointer occur along plate deflection of above. When the electromagnetic torque and spring resistance moment balance, stay in a pointer to the deflection Angle. Pointer to the deflection Angle and speed, which is proportional to its speed.
Mechanical defect is obvious speed table. Due to dial the pointer degree is proportional to the soft shaft rotation of low speed, when the magnetic force, smaller, with speed fluctuation change. Therefore, when the first low speed table pointer, swinging precision measurement and display. For rear engine vehicles, will the deflection speed table pointer is driven by the soft shaft transmission etc to cab, soft shaft inevitable layout, how long will this long turn soft shaft from the structure arrangement, affirmation is a very difficult thing. Together with the traditional mechanical speed table, the instrument has defects was washed out graally
The paper introces the odometers in SCM design speed and the minimum system as the core and the hall sensors. Different speed sensor into a different frequency pulse signal input to the MCU control and calculation, again USES LED mole that makes the speed of electric bicycle with mileage data can be intuitive to show the user.
This system consists of hall sensors, RC filter circuit chip and AT89S8252 LED display, systematic, data storage mole circuit. One hall sensor signal amplifier and waveform containing plastic. The signal enlarged aim is to rece signal amplitude treat requirements, Waveform conversion and waveform plastic circuit is used to convert the signal can be amplified with single-chip connected TTL signal, Through the microcontroller timer Settings can make internal T1 on foot T0 input pulses, thus can accurately calculate T0 added to the foot unit time detected pulse count, In the design that USES LED mole, the speed of mileage conversion speed by using the I2C bus E2PROM to store, and save for the mouth of SCM and peripheral devices, also simplifies shows part of the software programming
This paper first needed to design the odometers in detail, equipment for the problems existing in the design of explains, Then the part of hardware and software design and realization of the earnest analysis, Then presented system modeling process and the corresponding system model based on the control simulation, and the simulation results are compared.
The odometers design has simple structure, low cost, shows clearly, stable and reliable. And can expand, add a speedometer function, more convenient know you are in now.
