CN202661066U - Automobile altitude early-warning device based on accelerometer and gyroscope - Google Patents
Automobile altitude early-warning device based on accelerometer and gyroscope Download PDFInfo
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- CN202661066U CN202661066U CN 201220346222 CN201220346222U CN202661066U CN 202661066 U CN202661066 U CN 202661066U CN 201220346222 CN201220346222 CN 201220346222 CN 201220346222 U CN201220346222 U CN 201220346222U CN 202661066 U CN202661066 U CN 202661066U
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- accelerometer
- automobile
- warning device
- gyroscope
- liquid crystal
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Abstract
The utility model discloses an automobile altitude early-warning device based on an accelerometer and a gyroscope. The automobile altitude early-warning device based on the accelerometer and the gyroscope comprises an information processing unit, a liquid crystal display unit and an alarming unit. The automobile altitude early-warning device based on the accelerometer and the gyroscope further comprises a sensor unit consisting of a triaxial acceleration sensor and a triaxial gyroscope. The sensor unit is connected with an input terminal of the information processing unit. An output terminal of the information processing unit is respectively connected with the alarming unit and the liquid crystal display unit. The information processing unit and the liquid crystal display unit are installed on an instrument panel of an automobile. The automobile altitude early-warning device based on the accelerometer and the gyroscope provided by the utility model can be installed on any electrically controlled automobiles and has a wide application range. The automobile altitude early-warning device based on the accelerometer and the gyroscope can effectively improve the steering safety of the automobile so that drivers can drive the automobile smoothly and safely. The automobile altitude early-warning device based on the accelerometer and the gyroscope has the characteristics of convenience in manufacture, simple circuit and low cost and the like.
Description
Technical field
The utility model belongs to automobile technical field, relate to automotive safety, gyroscope and with fusion and the liquid crystal indicator of accelerometer, relate in particular to a kind of based on accelerometer and gyrostatic automobile attitude prior-warning device.
Background technology
Automobile is the most common in people's daily life, the most general also is one of the highest vehicles of frequency of utilization, but the increase along with automobile pollution, the automotive safety problem is also increasing, especially vehicle is when high-speed motion, the motions such as its inclination, pitching have very large harm to the security of automobile.Use gyroscope and the accelerometer of the micromechanics of present high speed development, the effective attitude of Real-Time Monitoring automobile, reminding driver should be adjusted running conditions of vehicle in time constantly, to avoid dangerous generation.
Summary of the invention
The purpose of this utility model is, provides a kind of based on accelerometer and gyrostatic automobile attitude prior-warning device.This device can make the real-time perception of driver running attitude this moment, and whether have the danger of rollover, in time to make corresponding adjustment if making it fast, accurately judge this moment vehicle.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of based on accelerometer and gyrostatic automobile attitude prior-warning device, comprise information process unit and liquid crystal display and alarm unit, also comprise the sensor unit that three axis accelerometer and three-axis gyroscope form, wherein sensor unit links to each other with the information process unit input end, and the information process unit output terminal links to each other with liquid crystal display with alarm unit respectively.
Wherein information process unit and liquid crystal display all are installed on the automobile instrument panel, and power to information process unit and liquid crystal display after the voltage step-down that is provided by accumulator.
Of the present utility modelly can be installed on any electronic automobile based on accelerometer and gyrostatic automobile attitude prior-warning device, have wide range of applications.After information process unit was processed, control liquid crystal display sensor output signal was monitored real-time running attitude as the driver.This device improves ride safety of automobile, allows the light safe driving of driver.Have easy to make, the characteristics such as circuit is simple, and cost is low.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is overall circuit catenation principle figure of the present utility model.
Fig. 3 is gyroscope circuit connection diagram of the present utility model.
Fig. 4 is acceleration sensor circuit connection layout of the present utility model.
Fig. 5 is alarm unit of the present utility model and liquid crystal display circuit connection diagram.
Fig. 6 is workflow diagram of the present utility model.
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment
With reference to Fig. 1, of the present utility model based on accelerometer and gyrostatic automobile attitude prior-warning device, comprise information process unit and liquid crystal display and alarm unit, also comprise the sensor unit that 3-axis acceleration sensor and three-axis gyroscope form, wherein sensor unit links to each other with the information process unit input end, the information process unit output terminal links to each other with liquid crystal display with alarm unit respectively, and information process unit and liquid crystal display all are installed on the automobile instrument panel.
Information process unit mainly is comprised of the MC9S12XS128 single-chip microcomputer.The MC9S12XS128maa chip is 16 single-chip microcomputers of Freescale company exploitation, abundant order set is provided, have stronger numerical operation and logical operation capability, the inside Flash program storage of 128KB, the RAM storer of 12KB, the EEPROM of 4KB, integrated serial communication interface, serial device interfaces on the sheet, the functional modules such as USB interface, A/D converter, PWM and CAN, it is the processes sensor signal in real time, according to the information by the key control unit input, receive the CAN bus data, information after processing to liquid crystal display output.
Referring to Fig. 3-Fig. 4, sensor unit is comprised of three axis accelerometer and three-axis gyroscope.Wherein gyroscope is selected ENC-03MB, and this product is a kind of angular-rate sensor of using the coriolis force principle, the analog voltage signal that its one of output and angular velocity are directly proportional.Characteristics are: 1. the fast response speed of especially little volume and weight 2., 3. low driving voltage and power consumption.Can measure the various motions that comprise rotation.A gyroscope can only be measured the magnitude of angular velocity of an axle, so the gyroscope among the design is respectively laid an ENC-03MB at X, Y, the Z axis of vehicle axis system, will note gyrostatic sensitive direction during installation.Such three single axis gyroscopes have just formed a three-axis gyroscope.
Acceleration transducer is selected the MMA7361 of Freescale company, and three axle small-range acceleration sensors are the sensors that detect object motion and direction, and it changes the magnitude of voltage of output signal according to object motion and direction.The signal of each axle do not move or not by the state of Action of Gravity Field under (0g), it is output as 1.65V.If along some direction activities, perhaps be subject to Action of Gravity Field, output voltage will change according to the transducer sensitivity of its direction of motion and setting its output voltage.Identical with three-axis gyroscope, 3-axis acceleration sensor also can be measured respectively the accekeration of each axle in the vehicle axis system, and then the angle of inclination of each axle of asking.
6 road AD signals with three-axis gyroscope and 3-axis acceleration sensor provide link to each other with AD0, AD1, AD2, AD3, AD4, the AD5 of single-chip microcomputer respectively.The voltage signal that degree of will speed up meter and gyroscope record is converted into the accessible digital signal of single-chip microcomputer.Measure 3 group of 3 axial rake value.Utilize Kalman filtering algorithm, the inclination data of gyroscope and accelerometer is carried out real time fusion, make measurement result more accurate.
Referring to Fig. 5, liquid crystal display adopts the 5110(PCD8544 of Nokia controller) liquid crystal display, 48*84 dot matrix LCD.Showing 4 row information, is respectively side rake angle, the angle of pitch and the yaw angle of vehicle operating.It can receive in real time information that the breath processing unit carries and show with the form of numeral, when moving attitude of vehicle has harm to vehicle safety operation, liquid crystal display will show " danger " printed words, not stop flicker with reminding driver, as the reference frame of driver's Real-Time Monitoring automobilism attitude.
Alarm unit is comprised of a hummer and LED light, is connected with an I/O mouth of single-chip microcomputer respectively.When the operation inclination angle of automobile surpassed its safety margin, hummer can send warning, and LED light meeting stroboscopic, with reminding driver, and the change vehicle operational mode.Simultaneously, liquid crystal display also has the prompting of " danger ".
With reference to Fig. 2, power supply based on accelerometer and gyrostatic automobile attitude prior-warning device of the present utility model is reduced to 5V for by key control unit and information process unit with accumulator through the ignition switch supply voltage by circuit of three-terminal voltage-stabilizing integrated LM7805, by LM1117-3.3 5V is being reduced to 3.3V supply liquid crystal display (beginning power supply when ignition switch is opened).Single-chip microcomputer MC9S12XS128 single-chip microcomputer MC9S 12XS 128 shows power supply by PB5 mouth control triode PSS8550 to liquid crystal, single-chip microcomputer MC9S 12XS 128 is by the RST mouth of PB0 mouth, PB1 mouth, PB2 mouth, PB3 mouth, PB4 mouth and Nokia 5110 (PCD8544 controller) liquid crystal display, and SEC mouth, D/C mouth, SDIN mouth, SCLK mouth link to each other to control liquid crystal display work.
With reference to Fig. 6, of the present utility model as follows based on accelerometer and gyrostatic automobile attitude prior-warning device workflow: the conducting of MC9S12XS128 Single-chip Controlling lcd power source, after the AD sampling, change the voltage signal of each axle of recording into digital quantity, measure corresponding each axle acceleration and each axle acceleration, through the pitch angle that draws each axle after the processing computing of single-chip microcomputer, this obliquity information of control liquid crystal display after processing.
Claims (5)
1. one kind based on accelerometer and gyrostatic automobile attitude prior-warning device, comprise information process unit and liquid crystal display and alarm unit, it is characterized in that: also comprise the sensor unit that 3-axis acceleration sensor and three-axis gyroscope form, wherein sensor unit links to each other with the information process unit input end, the information process unit output terminal links to each other with liquid crystal display with alarm unit respectively, and information process unit and liquid crystal display all are installed on the automobile instrument panel.
2. as claimed in claim 1 it is characterized in that: described three-axis gyroscope is ENC-03MB based on accelerometer and gyrostatic automobile attitude prior-warning device, and acceleration transducer is the MMA7361 of Freescale company.
3. as claimed in claim 1 based on accelerometer and gyrostatic automobile attitude prior-warning device, it is characterized in that: described information process unit is the MC9S12XS128 single-chip microcomputer.
4. as claimed in claim 1 based on accelerometer and gyrostatic automobile attitude prior-warning device, it is characterized in that: described liquid crystal display adopts Nokia's 5110 liquid crystal display.
5. as claimed in claim 1 based on accelerometer and gyrostatic automobile attitude prior-warning device, it is characterized in that: described alarm unit is comprised of a hummer and LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346222 CN202661066U (en) | 2012-07-17 | 2012-07-17 | Automobile altitude early-warning device based on accelerometer and gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346222 CN202661066U (en) | 2012-07-17 | 2012-07-17 | Automobile altitude early-warning device based on accelerometer and gyroscope |
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| Publication Number | Publication Date |
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| CN202661066U true CN202661066U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220346222 Expired - Fee Related CN202661066U (en) | 2012-07-17 | 2012-07-17 | Automobile altitude early-warning device based on accelerometer and gyroscope |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171561A (en) * | 2013-03-25 | 2013-06-26 | 广州市雄兵汽车电器有限公司 | Automobile gesture detecting method |
| CN104057907A (en) * | 2014-05-04 | 2014-09-24 | 昆明理工大学 | Safety protection detection and pre-warning circuit |
| CN104276049A (en) * | 2014-10-28 | 2015-01-14 | 广西一定能电子科技有限公司 | Circuit device capable of automatically cutting off speed controller during lateral inclining or toppling over of electric vehicle |
| CN109533079A (en) * | 2018-12-29 | 2019-03-29 | 北京智能猿科技有限公司 | Manned six sufficient vehicles under a kind of unstructured landform |
| CN109620624A (en) * | 2018-12-14 | 2019-04-16 | 重庆迈登医疗器械有限公司 | Tooth chair control circuit and its tooth chair control system based on MMA7361 |
-
2012
- 2012-07-17 CN CN 201220346222 patent/CN202661066U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171561A (en) * | 2013-03-25 | 2013-06-26 | 广州市雄兵汽车电器有限公司 | Automobile gesture detecting method |
| CN104057907A (en) * | 2014-05-04 | 2014-09-24 | 昆明理工大学 | Safety protection detection and pre-warning circuit |
| CN104276049A (en) * | 2014-10-28 | 2015-01-14 | 广西一定能电子科技有限公司 | Circuit device capable of automatically cutting off speed controller during lateral inclining or toppling over of electric vehicle |
| CN109620624A (en) * | 2018-12-14 | 2019-04-16 | 重庆迈登医疗器械有限公司 | Tooth chair control circuit and its tooth chair control system based on MMA7361 |
| CN109533079A (en) * | 2018-12-29 | 2019-03-29 | 北京智能猿科技有限公司 | Manned six sufficient vehicles under a kind of unstructured landform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130717 |