CN104460686A - Device used for controlling LED display screen on ferris wheel - Google Patents
Device used for controlling LED display screen on ferris wheel Download PDFInfo
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- CN104460686A CN104460686A CN201310416397.8A CN201310416397A CN104460686A CN 104460686 A CN104460686 A CN 104460686A CN 201310416397 A CN201310416397 A CN 201310416397A CN 104460686 A CN104460686 A CN 104460686A
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- led display
- ferris wheel
- display screen
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- gyroscope
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Abstract
The invention belongs to the landscape decoration lighting field, particularly relates to the automatic adjustment technology of an LED display screen on a ferris wheel. According to an LED display screen in the prior art, when the LED display screen on the ferrir wheel in the prior art rotates, the display screen can not normally display, a mode of combining a gyroscope and an acceleration sensor is employed, a micro controller can timely and accurately process state information during rotation of the display screen, the processed state information is further fed back to a main controller of the LED display screen, corresponding adjustment is further carried out, a wireless module is further employed to feed back the state information, and operation is convenient. Through the automatic adjustment device, a problem of display inclination of the LED display screen caused during rotation of the ferris wheel can be effectively solved.
Description
Technical field
The present invention relates to the control technology that a kind of LED shows, specifically, relate to a kind of device of the LED display controlled in ferris wheel.
Background technology
Existing LED display control system adopts following manner to carry out work.First, be arranged on the DV I mouthful of receiving video data from the video card in primary controller of the video data sending card in primary controller, after suitable format conversion, data packed, frame by frame video data is sent to the iversion controller in LED display.Each pixel in LED display comprises red by one group, green, the LED of blue 3 kinds of glow colors is formed, iversion controller is according to the RGB brightness data of each pixel in the video data received, this group is controlled respectively red by driving circuit, green, the brightness of blue LED, this group LED is made to show color and the brightness of a pixel, the brightness of each pixel and color are reduced one by one in LED display the most at last, like this, the picture that primary controller exports, just can the showing in LED display of basic synchronization (usually having the constant time lag time about 2 frames).
Ferris wheel is a kind of recreation facility of large rotary wheel shape, the tens of rice of diameter and even rice up to a hundred, and be provided with at wheel edge the passenger cabin taked for visitor, visitor is sitting in passenger cabin, along with the rotation of ferris wheel is progressively risen, can look down surrounding scenery from differing heights.Large-scale ferris wheel is all the landmark thing attracted the attention of millions of people in various places, if install the large-scale LED display of one side in the side of ferris wheel, and desirable public's media platform beyond doubt.But, be arranged on the LED display in ferris wheel, will rotate along with the rotation of ferris wheel, according to the control technology of existing LED display, can there is two problems: one, when LED display is rotated with ferris wheel, the picture of display screen display also can rotate thereupon, what the ground like this public saw will not be a normal picture, but one with the rotating picture of ferris wheel.Its two, if use traditional gyroscope survey, although have higher precision, its export exist drift, be not suitable for long dynamic angle measurement, and its initial position exists certain inclination angle, gyroscope cannot perception.If use accelerometer, although it can measure the inclination angle of object, but for the object of motion, once object of which movement, can introduce except the unexpected acceleration of gravity, for ferris wheel, in actual motion process in the corresponding sensitive axes of accelerometer, its motion that can not remain a constant speed for a long time, therefore accelerometer is not suitable for the inclination angle measuring moving object yet.
Summary of the invention
When the object of the invention is to overcome ferris wheel rotation, the normal angled display problem of LED display, provides the control method of a kind of ferris wheel LED display adjustment, can go out normal picture to make installation LED display.And then the display effect of dynamic display screen in raising ferris wheel, have good popularizing application prospect, technique scheme is as described below.
LED display automatic regulating and controlling device in ferris wheel mainly comprises gyroscope, accelerometer, LED display primary controller, wireless module, the compositions such as power supply.Gyroscope and accelerometer are arranged in ferris wheel, by the state change that gyroscope and accelerometer can detect in ferris wheel motion process, datum line on accelerometer and the angle on gravity direction, gyroscope is connected with primary controller by bus form with accelerometer, primary controller reads the data of gyroscope and accelerometer according to the cycle preset, and row relax of going forward side by side is merged in both data filterings.This primary controller is installed in ferris wheel, calculated the motion state of ferris wheel by angle value by it, and by postrotational picture transmission in described LED display, the direction rotated is the opposite direction that ferris wheel rotates, the angle rotated is the numerical value of the angle that it receives, thus realizes the automatic adjustment to ferris wheel LED display.
Meanwhile, wireless module is set, by wireless network, the controller on ground is connected with LED display primary controller so that by command to described primary controller, in real time monitoring its duty described.Wherein, described wireless network preferably supports that the wireless bridge of 802.11a/b/g/n pattern is built.
The present invention compared with prior art, has following substantive distinguishing features and advantage:
1. ferris wheel LED display automatic regulating apparatus adopts the mode that gyroscope combines with accelerometer, realizes mutual supplement with each other's advantages between the two, thus overcomes in ferris wheel rotary course, and LED screen tilts, and the problem that precision is not high, reaches the object of real-time monitoring.
2. ferris wheel LED display automatic regulating apparatus structure is simple, precision is high, real-time good, provides new thinking for the illumination application controls of LED in ferris wheel.
Accompanying drawing explanation
Fig. 1 is ferris wheel LED display automatic regulating apparatus system architecture schematic diagram.
Fig. 2 is ferris wheel LED display automatic regulating apparatus system hardware frame diagram.
Embodiment
The control system of ferris wheel LED display automatic regulating apparatus adopts VCC-LM800 as control core, and for the collection of data, process and transmission, several are equipped with VCC-LM8 iversion controllers simultaneously.Inertial Measurement Unit adopts three number of axle word gyroscope ITG3200 and three axle digital acceleration sensor ADXL345, is connected with master controller respectively by I2C with SPI universal serial bus, and controls acceleration transducer and gyrostatic synchronized sampling by timer interruption.
Master controller is adopted carry out averaging low-pass ripple and computing system angle parameter to data after sensing data, and result of calculation is transferred to primary controller by wireless channel.System schematic is as Fig. 1, and hardware frame figure is as Fig. 2.
(1) acceleration transducer application design
ADXL345 is a little and thin super low-power consumption three axis accelerometer, and resolution high (13 bit), measurement range reaches ± 16 g.Digital output data is 16 bit two's complement forms, and its high resolving power (3.9 mg/LSB), can measure the angle change less than 1.0 °, and can keep this scale-up factor in all measurement ranges.Impact resistance reaches 10000g, and ADXL345 is by SPI(3 line or 4 lines), I2C digital interface is accessed.The built-in output offset compensate function of ADXL345.Accelerometer is physical construction, comprises the element that can move freely.These moving components are very sensitive to mechanical stress.0g is biased or offset as important accelerometer index, it defines the baseline for acceleration measurement.Assembling is when being loaded with the system of accelerometer, may weld, the reason such as the application of circuit board stress when installing and any potpourri on element applies extra-stress to sensor due to element.At this moment need to calibrate sensor, suggesting system for wearing is calibrated after having assembled, to compensate these impacts.Method of calibration measures skew.Offset register ADXL345 is used auto-compensation skew to export.These register configuration are 8 bit two's complement values, and automatic powder adding is added to all accekerations recorded, its result is placed to data register subsequently.Negative value is placed in register, eliminates and just offset, then eliminate negative bias on the contrary and move.
(2) gyroscope application design
ITG-3200 is the three axis MEMS gyro chip that a digital form exports.The characteristic of ITG-3200 is that the analog/digital converter (ADCs) of utilization 3 16 bit carrys out digitizing gyroscope output terminal, impact resistance reaches 10000 g, there is program control built-in low-pass filter, and the I2C(400 kHz of quick mode) interface.Its characteristic separately have built-in temperature sensor with precisely poor only 2% built-in oscillator design.
The built-in lowpass digital filter of ITG-3200, arrange by configuration DLPF_CFG register, this register arranges gyrostatic filter cut-off frequency and sampling rate simultaneously.System total sampling rate is 50HZ, considers system motion state, DLPF is set to 5.
Claims (3)
1. control a device for the LED display in ferris wheel, it comprises:
Gyroscope, it is installed in ferris wheel, and connects master controller by bus form, angular velocity when this gyroscope can detect that ferris wheel pivots, by carrying out integral operation to angular velocity, obtain the anglec of rotation of ferris wheel, and this angular values is transferred to master controller;
Acceleration transducer, acceleration transducer is installed in ferris wheel, and this acceleration transducer can detect the angle between acceleration of gravity direction and each axle of sensor, and by this angle data transfer to described primary controller;
LED display master controller, this primary controller is installed in ferris wheel, it connects LED display and is shown to described LED display by image transmitting, described primary controller can real time rotation to be positioned on gravity direction normal viewing picture and by postrotational picture transmission in described LED display, the direction rotated is the opposite direction that ferris wheel rotates, and the angle of rotation is the numerical value of the angle that it receives;
Wireless module, it is arranged in ferris wheel, primarily of antenna and wireless bridge composition, by connecting the mode of antenna to accept signal transmission better.
2. ferris wheel LED display automaton as claimed in claim 1, it is characterized in that, described sensor assembly is made up of gyroscope and accelerometer, by the mode that both sensing datas merge mutually, when rotating ferris wheel, the changing value of angle carries out monitoring and testing, overcome when being used alone gyroscope or accelerometer, the phenomenon of angle of arrival deviation.
3. as claimed in claim 1 or 2, for the ease of the display monitoring state of ground in the face of LED display, in this automaton, wireless module is set, ground control unit detects the state of LED display master controller in real time by the mode of wireless network, and described wireless network supports that the wireless bridge of 802.11a/b/g/n pattern is built.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310416397.8A CN104460686A (en) | 2013-09-13 | 2013-09-13 | Device used for controlling LED display screen on ferris wheel |
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| CN201310416397.8A CN104460686A (en) | 2013-09-13 | 2013-09-13 | Device used for controlling LED display screen on ferris wheel |
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| CN104460686A true CN104460686A (en) | 2015-03-25 |
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| CN201310416397.8A Pending CN104460686A (en) | 2013-09-13 | 2013-09-13 | Device used for controlling LED display screen on ferris wheel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223877A (en) * | 2015-11-17 | 2016-01-06 | 昆山帝森克罗德光电技术有限公司 | A kind of SVG system and method thereof with showing adjustment and fall protection |
| CN106603439A (en) * | 2016-12-28 | 2017-04-26 | 上海市安装工程集团有限公司 | Communication structure for Ferris wheels |
| CN109192088A (en) * | 2018-10-31 | 2019-01-11 | 北京明瑞之光科技有限公司 | A kind of vertical runner device display methods |
| CN110310592A (en) * | 2019-06-28 | 2019-10-08 | 杭州勇电照明有限公司 | A kind of Intelligent LED lamp control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105223877A (en) * | 2015-11-17 | 2016-01-06 | 昆山帝森克罗德光电技术有限公司 | A kind of SVG system and method thereof with showing adjustment and fall protection |
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| CN106603439A (en) * | 2016-12-28 | 2017-04-26 | 上海市安装工程集团有限公司 | Communication structure for Ferris wheels |
| CN109192088A (en) * | 2018-10-31 | 2019-01-11 | 北京明瑞之光科技有限公司 | A kind of vertical runner device display methods |
| CN110310592A (en) * | 2019-06-28 | 2019-10-08 | 杭州勇电照明有限公司 | A kind of Intelligent LED lamp control system |
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Application publication date: 20150325 |