CN103235721A - Sleep/wake-up device and method based on acceleration sensor for vehicle-mounted electronic equipment - Google Patents
Sleep/wake-up device and method based on acceleration sensor for vehicle-mounted electronic equipment Download PDFInfo
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- 230000001133 acceleration Effects 0.000 title claims abstract description 77
- 230000007958 sleep Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005059 dormancy Effects 0.000 claims description 63
- 230000002618 waking effect Effects 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 102100024061 Integrator complex subunit 1 Human genes 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
The invention discloses a sleep/wake-up device and method based on an acceleration sensor for vehicle-mounted electronic equipment. The sleep/wake-up method comprises the following steps: S1, the current state of an automobile is acquired by the acceleration sensor and correspondingly an interruption signal is generated; S2, processing analysis is performed by an MCU (Microprogrammed Control Unit) according to the interruption signal from the acceleration sensor and a sleep/wake up control command is generated; and S3, a display circuit and a control circuit are correspondingly switched on or shut off according to the sleep/wake-up control command. According to the invention, the acceleration sensor arranged in the automobile correspondingly acquires a corresponding interruption signal according to the state of the automobile and sends the interruption signal to the MCU, the MCU achieves processing analytic judgment to the interruption signal so as to confirm that the signal is a sleep command or a wake-up command, the display circuit and the control circuit are correspondingly opened or closed according to the sleep or wake-up command to achieve the purpose of energy consumption reduction, and meanwhile, normal operation of the vehicle-mounted electronic equipment is ensured as required.
Description
Technical field
The invention belongs to the vehicle electronics technical field, what be specifically related to is a kind of vehicle electronic device dormancy awakening device and method based on acceleration transducer.
Background technology
High speed development and people's improving constantly the vehicle electronic device demand along with automobile industry, various automobile electronics emerge in multitude like the mushrooms after rain come out, as vehicle-carrying DVD, vehicle GPS etc., and the power consumption of a large amount of vehicle electronics products increases, must cause automobile mounted battery and fuel oil to consume in a large number, therefore increasing vehicle electronic device all needs to possess the low-power consumption function, namely stop or the user enters park mode unwanted the time at automobile, reduce energy resource consumption to reduce power consumption, and need use or during automobile starting the user, the corresponding vehicle electronic device of opening is to realize its normal operation.
But present vehicle electronic device is to need by user's manual operation mostly, just can reach the purpose of closing or making the vehicle electronic device dormancy and waking up, it is very inconvenient on operation is used, as shown in Figure 1, after equipment enters the low-power consumption sleep mode, the user must just can wake mobile unit up by pressing the Key key, and modal have automobile CD power key and a display power supply key; If want in addition to make equipment enter low-power consumption, the user also must close mobile unit by the Key key, and equipment enters the shutdown dormant state after the user presses this Key key.
Hence one can see that, guaranteeing that the mobile unit operate as normal reduces under the situation of equipment power dissipation simultaneously, how to make automobile mounted electronic equipment enter dormancy or wake-up states, is present problem demanding prompt solution.
Summary of the invention
For this reason, the object of the present invention is to provide a kind of vehicle electronic device dormancy awakening device and method based on acceleration transducer, can only realize dormancy and wake existing operation inconvenience, the loaded down with trivial details and power consumption problem of higher of control up by the external switch button to solve present vehicle electronic device.
The objective of the invention is to be achieved through the following technical solutions.
A kind of vehicle electronic device dormancy awakening device based on acceleration transducer, comprise MCU control module, RTC wakeup unit, display circuit, control circuit and acceleration transducer, the interruption pin of described acceleration transducer detects pin with the external interrupt of MCU control module and is connected, this acceleration transducer is used for producing look-at-me according to vehicle condition, and this look-at-me is input to the MCU control module, produce corresponding dormancy awakening steering order by the MCU control module; Described MCU control module is connected with RTC wakeup unit, display circuit and control circuit respectively, and the RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces.
Preferably, described MCU control module also is connected with a sleep block, and this sleep block is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
Preferably, described vehicle condition comprises dead ship condition and transport condition, and acceleration transducer can correspondingly produce the dormancy look-at-me according to the dead ship condition of automobile, can corresponding generation wakeup interrupt signal according to the transport condition of automobile.
Preferably, described acceleration transducer surpasses setting-up time and does not detect the then corresponding dormancy look-at-me that produces of external event according to the dead ship condition of automobile.
A kind of vehicle electronic device dormancy awakening method based on acceleration transducer comprises:
S1, acceleration transducer obtain the automobile current state, and the corresponding look-at-me that produces;
S2, MCU control module carry out Treatment Analysis according to the look-at-me from acceleration transducer, and produce the dormancy awakening steering order;
S3, open or close display circuit and control circuit according to above-mentioned dormancy awakening steering order is corresponding.
Preferably, S1 comprises:
Acceleration transducer is according to the corresponding generation of the dead ship condition dormancy look-at-me of automobile, and the parking of automobile state surpasses setting-up time and do not detect external event;
Acceleration transducer is according to the corresponding wakeup interrupt signal that produces of transport condition of automobile.
Preferably, S2 comprises:
The MCU control module carries out Treatment Analysis according to the dormancy look-at-me from acceleration transducer, produces the dormancy steering order;
The MCU control module carries out Treatment Analysis according to the wakeup interrupt signal from acceleration transducer, produces to wake steering order up.
Preferably, S3 comprises:
The RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces;
Sleep block is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
The present invention compared with prior art, beneficial effect is: the vehicle electronic device dormancy awakening device and method based on acceleration transducer provided by the invention, obtain corresponding look-at-me by the acceleration transducer correspondence that is arranged in the automobile according to the state of automobile, and this look-at-me sent to the MCU controller, the MCU controller carries out Treatment Analysis to look-at-me and judges, to confirm that this signal is dormancy or wakes instruction up, and simultaneously according to dormancy or wake the instruction correspondence up and close or open display circuit and control circuit, to reach the purpose that cuts down the consumption of energy, guarantee automobile mounted electronic equipment operate as normal when needed simultaneously.
Description of drawings
The theory diagram of Fig. 1 for having the vehicle electronic device dormancy now and waking up.
Fig. 2 is vehicle electronic device dormancy of the present invention and the theory diagram that wakes up.
Fig. 3 is the circuit theory diagrams of acceleration transducer of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
See also Fig. 2, shown in Figure 3, Fig. 2 is vehicle electronic device dormancy of the present invention and the theory diagram that wakes up; Fig. 3 is the circuit theory diagrams of acceleration transducer of the present invention.The present invention is to provide a kind of vehicle electronic device dormancy awakening device based on acceleration transducer, it is mainly used in solving present vehicle electronic device and can only realizes dormancy and wake existing operation inconvenience, the loaded down with trivial details and power consumption problem of higher of control up by the external switch button.
This device is realized the running status of automobile is carried out induction monitoring by acceleration transducer, to obtain the automobile current state, and according to the current state of automobile judge whether automobile is in parking, travel, state such as engine vibration, and automobile be in stop to surpass certain setting-up time after, produce the look-at-me that vehicle electronic device needs dormancy; And be in running status (as engine vibration at automobile, states such as turn inside diameter) time, the wake-up signal that corresponding generation vehicle electronic device need be opened, realize by the way the auto sleep of mobile unit is waken up, thereby can reduce user's operation, realize the robotization control of vehicle electronic device.
The vehicle electronic device dormancy awakening device that wherein the present invention is based on acceleration transducer comprises MCU control module, RTC wakeup unit, sleep block, display circuit, control circuit and acceleration transducer, the interruption pin of described acceleration transducer detects pin with the external interrupt of MCU control module and is connected, and the MCU control module is connected with RTC wakeup unit, display circuit, control circuit respectively.
Wherein acceleration transducer is used for producing look-at-me according to vehicle condition, and described vehicle condition includes but not limited to dead ship condition and transport condition, acceleration transducer can correspondingly produce the dormancy look-at-me according to the dead ship condition of automobile, and just can correspondingly produce the dormancy look-at-me when the dead ship condition of automobile surpasses setting-up time and do not detect external event; And acceleration transducer can corresponding generation wakeup interrupt signal according to the transport condition (as engine vibration, turn inside diameter etc.) of automobile.
Acceleration transducer is input to the MCU control module with the look-at-me of above-mentioned generation, produces corresponding dormancy awakening steering order by the MCU control module; Described MCU control module is connected with RTC wakeup unit, display circuit and control circuit respectively, and the RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces; Described acceleration transducer surpasses setting-up time and does not detect the then corresponding dormancy look-at-me that produces of external event according to the dead ship condition of automobile, and sleep block then is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
As shown in Figure 3, Fig. 3 is the circuit theory diagrams of acceleration transducer of the present invention.Acceleration transducer of the present invention is 3-axis acceleration sensor LIS3DH, it is 2 μ A that its working current consumes minimum, be encapsulated as 3x3x1mm, this acceleration sensor is fit to all limited application designs of motional induction function, space and power consumption, as mobile phone, telepilot and game machine etc.In the gamut scope of ± 2g/ ± 4g/ ± 8g/ ± 16g, LIS3DH can provide point-device measurement data output, in rated temperature with under working long hours, still can keep good stable, and this acceleration transducer is easy to control, low in energy consumption, energy-conserving and environment-protective.
The interrupt pin INT1 of acceleration transducer LIS3DH is connected to the pass under-chassis of MCU control module or is waken up pin by ACCIDENT INT, be used for dormancy or the wakeup interrupt signal correspondence of obtaining is input to the MCU control module, thereby realize the dormancy of vehicle electronic device and wake control up.
More than be the explanation to the vehicle electronic device dormancy awakening device that the present invention is based on acceleration transducer, will the vehicle electronic device dormancy awakening method that the present invention is based on acceleration transducer be further described below.
The present invention also provides a kind of vehicle electronic device dormancy awakening method based on acceleration transducer, and it specifically adopts following steps:
S1, acceleration transducer obtain the automobile current state, and the corresponding look-at-me that produces;
Wherein acceleration transducer produces the dormancy look-at-me according to the dead ship condition correspondence of automobile, and the parking of automobile state surpasses setting-up time and do not detect external event; Acceleration transducer is according to the corresponding wakeup interrupt signal that produces of transport condition of automobile.
S2, MCU control module carry out Treatment Analysis according to the look-at-me from acceleration transducer, and produce the dormancy awakening steering order;
Wherein the MCU control module carries out Treatment Analysis according to the dormancy look-at-me from acceleration transducer, produces the dormancy steering order; The MCU control module carries out Treatment Analysis according to the wakeup interrupt signal from acceleration transducer, produces to wake steering order up.
S3, open or close display circuit and control circuit according to above-mentioned dormancy awakening steering order is corresponding.
Wherein the RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces; Sleep block is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
The present invention judges by acceleration transducer whether vehicle electronic device is in idle state, the vibrations that the vibrations that bring such as automobile starting or subscriber switch car door bring, perhaps acceleration during automobilism etc., can confirm that current device is in running order, when all external events disappear, can judgment device be in idle state.Just can enter dormant state when idle state surpasses certain hour equipment, the operation that can reduce the user simultaneously realizes robotization control.
Acceleration transducer of the present invention is a kind of electronic equipment that can measure horizontal X Y-axis, space Z axle, and it is according to piezoelectric effect principle work, by sensor can learn when object accelerating or motion process in act on power on the object, such as terrestrial gravitation.By measuring the acceleration that gravity causes, can calculate equipment angle of inclination with respect to the horizontal plane, by analyzing dynamic acceleration, can analyze the move mode of equipment.Whether whether and acceleration transducer also can help the user to understand the environment that automobile is in now, is to climb the mountain or going down hill, take a sudden turn and bring to a halt, and utilizes acceleration transducer even can also analyze the vibrating state of engine.
The present invention utilizes acceleration transducer to confirm whether current automobile is in running order, if duty is then waken the equipment that is in the low-power consumption dormant state at present up; Otherwise vehicle electronic device continues dormancy, reduces the purpose that automobile batteries consumes thereby reach.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. vehicle electronic device dormancy awakening device based on acceleration transducer, it is characterized in that comprising MCU control module, RTC wakeup unit, display circuit, control circuit and acceleration transducer, the interruption pin of described acceleration transducer detects pin with the external interrupt of MCU control module and is connected, this acceleration transducer is used for producing look-at-me according to vehicle condition, and this look-at-me is input to the MCU control module, produce corresponding dormancy awakening steering order by the MCU control module; Described MCU control module is connected with RTC wakeup unit, display circuit and control circuit respectively, and the RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces.
2. the vehicle electronic device dormancy awakening device based on acceleration transducer according to claim 1, it is characterized in that described MCU control module also is connected with a sleep block, this sleep block is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
3. the vehicle electronic device dormancy awakening device based on acceleration transducer according to claim 1, it is characterized in that described vehicle condition comprises dead ship condition and transport condition, acceleration transducer can correspondingly produce the dormancy look-at-me according to the dead ship condition of automobile, can corresponding generation wakeup interrupt signal according to the transport condition of automobile.
4. the vehicle electronic device dormancy awakening device based on acceleration transducer according to claim 3 is characterized in that described acceleration transducer surpasses setting-up time and do not detect the then corresponding dormancy look-at-me that produces of external event according to the dead ship condition of automobile.
5. vehicle electronic device dormancy awakening method based on acceleration transducer is characterized in that comprising:
S1, acceleration transducer obtain the automobile current state, and the corresponding look-at-me that produces;
S2, MCU control module carry out Treatment Analysis according to the look-at-me from acceleration transducer, and produce the dormancy awakening steering order;
S3, open or close display circuit and control circuit according to above-mentioned dormancy awakening steering order is corresponding.
6. the vehicle electronic device dormancy awakening method based on acceleration transducer according to claim 5 is characterized in that S1 comprises:
Acceleration transducer is according to the corresponding generation of the dead ship condition dormancy look-at-me of automobile, and the parking of automobile state surpasses setting-up time and do not detect external event;
Acceleration transducer is according to the corresponding wakeup interrupt signal that produces of transport condition of automobile.
7. the vehicle electronic device dormancy awakening method based on acceleration transducer according to claim 5 is characterized in that S2 comprises:
The MCU control module carries out Treatment Analysis according to the dormancy look-at-me from acceleration transducer, produces the dormancy steering order;
The MCU control module carries out Treatment Analysis according to the wakeup interrupt signal from acceleration transducer, produces to wake steering order up.
8. the vehicle electronic device dormancy awakening method based on acceleration transducer according to claim 5 is characterized in that S3 comprises:
The RTC wakeup unit is used for opening display circuit and control circuit according to the steering order correspondence of waking up that the MCU control module produces;
Sleep block is used for closing display circuit and control circuit according to the dormancy steering order correspondence that the MCU control module produces.
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| CN2013101178897A CN103235721A (en) | 2013-04-02 | 2013-04-02 | Sleep/wake-up device and method based on acceleration sensor for vehicle-mounted electronic equipment |
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