The AT89S52 used in this design is a flash single chip microcomputer, which can be directly programmed online, and it is easier to write programs to the single chip microcomputer. The digital thermometer designed in this paper uses DS18B20 digital temperature sensor, DS18B20 is a high-precision digital temperature sensor that can be networked.Because of its unique advantages of single bus, the sensor network can be easily set up by users, and the multi-point temperature measurement circuit can be simple and reliable.
PROTEUS, when installed, does not generate shortcuts on the desktop by default. Open the Start menu and click "Program, Proteus7Professional, ISIS7Professional" to open PROTEUS. Click P in the figure to add components such as microcontroller. Search with the keyword, 89C51, and add a few leds, because it is simulation without adding current limiting resistance andCrystal reset the element up. Put the components in place, and put in a power supply.
Dallas Semiconductor's digital temperature sensor DS1820 is the first temperature sensor in the world to support a "one-line bus" interface, using ON-B0ARD patented technology inside. All sensing elements and conversion circuits are integrated in an integrated circuit shaped like a triode. The unique and economical features of the "one-line bus" make it easy for users to set up sensor networks, introducing a new concept for the construction of measurement systems.
Directly via DS18B20Read the measured temperature value, send it to MCU for data processing, and then output it to display, finally complete the overall design of digital thermometer. The system structure is simple, the signal acquisition effect is good, the data processing speed is fast, and it is easy to use in practice.
The hardware design of the detection system is based on AT89C51 single chip microcomputer as the core, using temperature sensor DS18B20 to achieve temperature control, using digital tube to display the actual temperature and preset temperature, making digital thermometer, and can realize temperature early warning control. The software programming of single-chip microcomputer system is programmed by single-chip microcomputer assembly. The application software uses KEIL and P> Changan uint key need to charge If there is no power, the door handle can be hidden with the battery of other vehicles, and then the car can open the door after the power is on. Preparation materials: a jumper starting wire, a rescue vehicle Specific steps: when the vehicle power loss can not start, generally use the wiring method to start the car, take out the standing car battery wiring. Open the hood and battery protection shell of the two cars to reveal the positive and negative terminals of the battery.
unit Open Bluetooth key does not cost electricity, very convenient and fast formal safe operation behavior. If you're worried, tooYou can call the manual customer service phone to solve the problem, and you can see the product official website information in detail.
If you need to take out the mechanical key of the Changan uni-t, you can press the silver button in the corner of the remote key. This mechanical key is mainly a spare key that can be used when the remote control key is out of power. If you need to replace the battery of the remote control key, you need to take out the mechanical key, then pry open the key case, and take out the battery for replacement. After replacement, reinstall the key in reverse order.
About Changan UNI-T remote key operation: To remove the mechanical key, simply press the remote key gentlyThe silver button in the corner of the key is easy to operate. The mechanical key is used as a backup when the remote control runs out of power, providing convenience at critical moments. The remote key is equipped with multiple buttons, including keys to lock, unlock and open the trunk.
1, Changan unit reverse rearview mirror will automatically downward. Changan uint rearview mirror automatic down Settings, vehicle Settings have a rearview mirror reverse down, the setting opens and then hangs into reverse to adjust the rearview mirror. Next time I put it in reverseIt flips, and this car's rearview mirror reverse assist works better than rearview mirror reverse flip.
2, unit rearview mirror memory function setting method: First of all, turn on the car ignition, and then press a red button on the left side of the driver, and then the driver begins to adjust the appropriate position of the two rearview mirrors outside, after the adjustment is completed, the driver's license can press the left memory button to complete, as long as you hear a dong, it proves that the setting is successful.
3, in the middle and high-end cars, the rearview mirror is basically folding, folding function is divided into two kinds, one is manual, need to foldWhen folding, the driver must put his hand out of the window or get off the car to fold, which is inconvenient and unsafe, and this folding of the rearview mirror has been very few. There is also an electric one, which is also a more common one, and its advantage is that the driver can fold it in the car, and the rearview mirror will automatically open when starting the vehicle.
4, the following is the specific introduction of Changan uni-t interior button function: door: respectively, the central control lock and window lock and window lift button. Left side of the center console: there is a button to control the external rearview mirror that can be folded and the trunk open button roller can adjust the height of the headlights. Left side of steering wheel: car microLetter shortcut keys integrated on the steering wheel are cruise setting, cruise cancel distance adjustment, voice, wechat, lane keeping.
Transfer data: By using the infrared adapter and infrared port, you can charge the computer and its uint car wireless charge He has the infrared transmission function uint car wireless charge deviceTransfer data between mobile phones, cameras, digital audio players, printers, etc. Control equipment: Infrared interface can also be used to control TV, audio, air conditioning and other household appliances. You can control these devices with a compatible infrared remote control or app.
Select the appropriate infrared transmission mode, such as "HPSIR" or "ASKIR", to match the desired speed. After the system software and protocols are installed, an Infrared Receiver icon is added. In Control Panel, adjust its status and add the relevant infrared ports and protocols in the Network option. With these Settings,The dual-system interconnection function can be enabled.
In Windows 98, new hardware is prompted and drivers are automatically installed, including the addition of an infrared monitor icon, the addition of devices such as a virtual infrared port in Device Manager, and the display of infrared receiver ICONS in Control Panel and My Computer. After these Settings are done, you can take full advantage of the infrared connection function of the motherboard through the tools that come with Windows 98, such as the infrared monitor and infrared receiver.