ultrasonic rangefinder

Touch screen type: according to different sensing methods, touch screen can be divided into four categories: resistance type, Capacitive Type, infrared type, and ultrasonic type. Among them, the current market prospect of Resistance Type and Capacitive Type is the most promising, and other technologies may be difficult to catch up with in the short term.Difference between a resistive screen and a capacitive ScreenResistive touch screens are commonly k

, ceiling mounting, and wall embedding around the house, reduce indoor space.Areas of Inter-person activity, and some are flammable, there is a hidden danger of insecurity. Smooth wall reflection effectStrong, various sounds interfere with each other to form noise, ultrasonic and low-frequency noise, nonstandard decoration destroyed the buildingThe overall framework will undoubtedly shorten the life of the building.The release of formaldehyde, benzene

, 1996.[2] sun m. A study of Helicopter Rotor aerodynamics in ground effect [D]. Princeton: Princeton Univ, 1983.(4) ProceedingsRecording format: [No.] main responsible person. Title [C]. Publishing place: publisher, publishing year.For example: [1] Xin ximeng. Proceedings of the International Seminar on Information Technology and Information Service: episode a [C]. Beijing: China Social Science Press, 1994.[2] Beijing Aerodynamic Research Institute. Proceedings of the ninth supersonic Aerodynam

Detection and Identification of multiple objects in complex scenarios 13:37:44 [text font:LargeMediumSmall] Print favorites to close In image tracking systems, Real-Time Detection and Recognition of image targets is crucial. In many application scenarios, scenarios and areas are complex. For example, in intelligent monitoring systems, computer vision, and augmented reality applications, it is often necessary to identify and track mu

is based on the principle of total reflection of light. The Application of crystal sensors has recently appeared on the market. These flat containing micro Crystals use a variety of techniques to plot fingerprint images. A capacitive sensor is one of them. It is designed to capture fingerprint images through electronic measurements. The capacitive device can be combined with a 100 000 conductor metal array sensor. The outside is an insulating surface. When the user's fingers are placed on it, t

Product Introduction Chip: NXP Mifare 1 S50 Storage Capacity: 8 kbit, 16 partitions, two groups of passwords per Partition Operating frequency: 13.56 MHz Communication speed: 106 kboud Read/write distance: 5-10 cm Read/write time: 1-2 ms Operating temperature:-20 ℃-85 ℃ Number of writes:> 100000 Data storage:> 10 years Gauge: 0.87x85.5x54/nonstandard card Packaging materials: PVC, pet, and 0.13 copper wires. Currently, white cards, printed cards, photo cards, and tags can be pro

Ball mouse --> Optical Mouse;D) mechanical keyboard --> touch screen --> laser projection;E) Mechanical laundry --> ultrasonic laundry --> ionization laundry (washing machine without washing powder );F) Wired System-> Wireless System (satellite TV, etc );G) add an unpleasant gas to the gas as a warning for gas leakage:H) Sound fence; use electromagnetic field instead of mechanical vibration to mix the powder; ......However, when interacting between s

For more information about the Single-Chip Microcomputer Development, see the following. Lab questions Description: (1) The question is divided into one, two, and three categories based on the difficulty. The question number starts with 1st Arabic numerals, which is the difficulty of the question. The question number is followed by the serial number after. (2) If there is "*" on the question number, it means that it can be implemented using a PC or a single-chip microcomputer. After t

the optical fiber end face. It requires that the end face after preparation be flat, no Burr, no defect, and perpendicular to the axis to present a smooth and flat mirror area, and keep clean to avoid dust pollution. There are three methods to prepare the end face. One is the marking method. A mechanical cutting tool is used to draw a path mark perpendicular to the optical fiber on the surface with a diamond knife. The face is 10 Gbit/s away from the coating layer and can be easily touched, the

original data is collected by various sensors; (ii) Various features is extracted from the original data, such as road (object) colors, lane edges, building contours; (iii) Semantic objects is recognized using classifiers, and consist of lanes, signs, vehicles, pedestrians; (iv) We can deduce driving contexts, and vehicle positions. Multi-sensor Fusion Multi-sensor Fusion is the basic framework of intelligent vehicles for better sensing Surro UNDING environment struct

Abstract: Original Blog: Reproduced please indicate the source: http://www.cnblogs.com/zxouxuewei/1.0. This tutorial teaches you to write the actual Ros program and control your robot. The PC-side Ubuntu+ros is used. Terminal in order to be able to use low-cost mileage meter, gyroscope, accelerometer, ultrasonic sensors, using STM32 controller. The two communicate through serial port, interactive data. All code has to be carefully studied. The premise

row pin each piece;8. A row of DuPont lines.Bought RF IC card sensor module like the following, the mail is about 14 pieces:Bought when the row plug and not welded, so must self-welding, although I do not have welding tools, but through this experiment I still welded. Here is the result of my second soldering:Miafre 1-S50 inductive IC card◇ Chip: Philips Mifare 1 S50◇ Storage Capacity: 8Kbit, 16 partitions, two sets of passwords per partition◇ Operating Frequency: 13.56MHZ◇ Communication speed:

1, the big moment to do the remote control carVideo link: http://v.youku.com/v_show/id_XNTk0NzE5MDUy.htmlHardware part: Remote control with 315 module, two DC motor + a universal wheel, l298n Motor drive chip, ultrasonic moduleSoftware part: C Language control code written by ATmega16 MCU2. Four-drive track trolley made during sophomoreVideo link: http://v.youku.com/v_show/id_XNTk0NzE5MzUy.htmlHardware part: Four DC motor, l298n Motor drive chip, four

[His] Definitions of commonly used nouns and abbreviations in hit industry1. EHR resident personal electronic health record2. MPI resident Personal Master Index3. His hospital management information system4. Clinical information System of CIS Hospital5. PRM Patient Relationship Management6. LIS Inspection Information System7. RIS Radiology Information System8. PACS medical image storage and transmission system9. UIS Ultrasonic Information System10.EIS

the specific. with SD card/u disk update function, you can download the prepared instruction document to the player. or play the SD card/U disk content directly. With an audio amplifier, the speaker can be driven directly. With outside control function, can be controlled by external MCU playback, stop and other functions. Control function Pedestrian detection capability Ultrasonic distance Detection: dc5v

-laid wall, and figure 2.22 illustrates the interaction with a virtual scene using stereo glasses and a right-handed data glove (later).Low-cost interactive virtual reality environments can also be observed with stereo glasses and video monitors without wigs, providing a cheap virtual reality system. Figure 2.23 shows an ultrasonic tracking device with six degrees of freedom. The tracking device is placed at the top of the video display and is used to

-reference to determine the infection of hepatitis B virus, must pay attention to the timely acceptance of liver function examination,Hbv-dna examination, B Ultrasonic examination, such as comprehensive examination, accurate understanding of their own condition, for their own condition to receive hepatitis B treatment, timely resistance in the development of the disease, to avoid threats to their own health. is hepatitis B five positive needs to be

the mobile power, from the mobile power of the USB is micro-port, Can not connect, need a male-to-male USB cable, there is no way to buy a data cable alone, the module is connected to the same way as other modules, connect the power of the USB port, the above pin has 3.3V, 5V, GND, it is clear, said above, the general module requires VCC and GND, Gpio above these two quantities are limited, you can receive this independent power supply module, out pin normal to the Raspberry Pi Gpio pin, but al

integration. The platform fully supports the SDK, external devices can be flexibly connected to the aircraft control and monitoring.Jingwei M100More details:http://dev.dji.com/cn/products/flying-platforms/matrice-100Guidance IntroductionThe guidance is a new visual sensing navigation system that senses nearby obstructions and allows the aircraft to actively evade. It features a powerful processing core with five sets of vision ultrasonic combination

last is to locate, the arm can clamp the nut, the arm moved to the top of the nut, a bit like missile guidance, arm side to move side to see, calibration position, put the clip in the nut is just below, and then down, tightly clamped, of course, clamp more tightly can also be precisely controlled, and the current mechanical arm clamping force is fixed. In fact, positioning technology can also be used radar technology, radar is actually emitting radio waves, electromagnetic waves, and then recei