CN103818204A - Method and device for tire pressure monitoring - Google Patents
Method and device for tire pressure monitoring Download PDFInfo
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- CN103818204A CN103818204A CN201410082042.4A CN201410082042A CN103818204A CN 103818204 A CN103818204 A CN 103818204A CN 201410082042 A CN201410082042 A CN 201410082042A CN 103818204 A CN103818204 A CN 103818204A
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Abstract
The invention is applicable in the field of communications and provides a method and a device for tire pressure monitoring. The method comprises the following steps: tire pressure monitoring data is collected in a current state; the state model is switched according to the collected tire pressure monitoring data. According to the method and the device provided by the invention, the validity, reliability and accuracy of the tire pressure monitoring are guaranteed; simultaneously, the power dissipation is effectively reduced; the service life of a battery is prolonged.
Description
Technical field
The invention belongs to the communications field, relate in particular to a kind of method and device of tire pressure monitoring.
Background technology
The radical function of tire pressure monitoring system is monitoring, the mode of operation that shows and confirm tire, and the unusual condition that tire is occurred (as superpressure, under-voltage, overtemperature, air pressure sudden change etc.) and alarm, show current situation by acousto-optic, numeral, with guarantee driving safety, prevent from blowing out, guarantee that motor tire is for a long time in reasonable use state simultaneously.According to statistics, the traffic accident occurring on China Expressway has 70% to cause owing to blowing out, and in this ratio of the U.S. up to 80%, therefore tire pressure monitoring system is just more and more subject to people's attention.
In order to reduce the power consumption of tire pressure sensing device, the most frequently used mode is reduce the transmission times of data and extend the transmission interval of data at present, and this just can increase the probability that data are failed to report unavoidably, thereby has reduced the reliability of monitoring and warning.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of method and device of tire pressure monitoring, is intended to solve the problem that existing tire pressure monitoring data are failed to report.
The embodiment of the present invention is achieved in that a kind of method of tire pressure monitoring, and described method comprises the steps:
Under current state pattern, gather tire prison data;
According to the tire prison data exchange state model of described collection.
Further, described collection tire prison data are further:
Gather tire prison data by being arranged at pressure sensor, temperature sensor and/or the acceleration pick-up of tire.
Further, described state model be memory module, the pattern of parking, driving mode, park mode or transformation pattern.
Further, the described prison of the tire according to described collection data exchange state model comprises:
In the time detecting that under memory module tire pressure is greater than default first threshold P1 or acceleration/accel and is greater than default Second Threshold a1, switch to the pattern of parking;
When being more than or equal to the 4th threshold value a2, the 3rd threshold value v1 or acceleration/accel switch to driving pattern when detecting under the pattern of parking or park mode that moving velocity is more than or equal to;
When detecting that under park mode pressure and acceleration/accel all continue a default time T 8 when unchanged, are switched to the pattern of parking.
Further, described method also comprises:
Described transformation pattern comprises the transformation pattern of parking, suspends transformation pattern and the transformation pattern of travelling, when the transformation pattern of parking being detected, suspending under transformation pattern or the transformation pattern of travelling tire pressure and acceleration/accel, to continue a preset time T 7 unchanged, switches to respectively the pattern of parking, driving mode and park mode.
The present invention also proposes a kind of device of tire pressure monitoring, and described device comprises:
Acquisition module, for gathering tire prison data under current state pattern;
Handover module, for supervising data exchange state model according to the tire of described collection.
Further, described acquisition module specifically for:
Gather tire prison data by being arranged at pressure sensor, temperature sensor and/or the acceleration pick-up of tire.
Further, described state model be memory module, the pattern of parking, driving mode, park mode or transformation pattern.
Further, described handover module specifically for:
In the time detecting that under memory module tire pressure is greater than default first threshold P1 or acceleration/accel and is greater than default Second Threshold a1, switch to the pattern of parking;
When being more than or equal to the 4th threshold value a2, the 3rd threshold value v1 or acceleration/accel switch to driving pattern when detecting under the pattern of parking or park mode that moving velocity is more than or equal to;
When detecting that under park mode pressure and acceleration/accel all continue a default time T 8 when unchanged, are switched to the pattern of parking.
Further, described device also comprises voltage changing module, for comprising the transformation pattern of parking when described transformation pattern, suspending transformation pattern and the transformation pattern of travelling, and it is unchanged to detect that tire pressure and acceleration/accel continue a preset time T 7, switches to respectively the pattern of parking, driving mode and park mode.
The embodiment of the present invention is divided into various states pattern according to the variation of inside tires pressure, temperature and acceleration/accel by tire pressure monitoring, under different state models, adopt different data acquisitions and delivery plan, in guaranteeing validity, reliability and the accuracy of tire pressure monitoring, can effectively reduce power consumption, extend the service life of battery.
Accompanying drawing explanation
Fig. 1 is the diagram of circuit of the method for the tire pressure monitoring that provides of the embodiment of the present invention one;
Fig. 2 is the switching figure of the state model of the method for the tire pressure monitoring that provides of the embodiment of the present invention one;
Fig. 3 is the constructional drawing of the device of the tire pressure monitoring that provides of the embodiment of the present invention two.
The specific embodiment
In order to make object 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 explain the present invention, is not intended to limit the present invention.
embodiment mono-
The embodiment of the present invention one proposes a kind of method of tire pressure monitoring.As shown in Figure 1, the method for the embodiment of the present invention one comprises the steps:
S1, under current state pattern, gather tire prison data.The embodiment of the present invention one can gather tire prison data by MCU, and pressure sensor, temperature sensor and acceleration pick-up are arranged on tire, gathers tire pressure, temperature and the acceleration/accel on tire and feeds back to MCU.MCU controls collection, processing and the transmission etc. of above-mentioned tire prison data.
S2, according to the tire prison data exchange state model gathering.
The embodiment of the present invention one is difference divided following various state model in advance according to tire pressure, temperature and acceleration/accel, under different conditions pattern, adopts different data acquisitions and send mode.As shown in Figure 2, according to the relevant tire prison data that collect in step S1, determine whether continue to use current state model collection and send data, or switch to other state model, gather and send data according to other state model.
Memory module: represent that tyre pressure sensor is not yet installed on tire, should be set to maximum duration interval T 1(under this pattern as 200s) gather a secondary data, countless according to transmission, least in power-consuming.
The pattern of parking: represent that automobile, in parked state, now changes without pressure, acceleration/accel is zero, and this lower long period of pattern, interval T 2(was as 120s) gather a secondary data, countless according to transmission, power consumption is lower.When detecting that under memory module tire pressure is greater than certain default first threshold P1(as 200KPa) or acceleration/accel be greater than certain default Second Threshold a1(as 5g) or the combination of these two parameters while simultaneously satisfying condition, be switched to the pattern of parking.
Driving mode: represent that automobile driving speed has met or exceeded certain specific the 3rd threshold value v1(as 20km/h) or acceleration/accel to meet or exceed the 4th default threshold value a2(Second Threshold a1 identical with the 4th threshold value a2 or not identical), in motoring condition.This pattern further comprises start-up mode (by the stable excessive pattern of travelling of parking) and stable driving mode.Wherein, data acquisition time interval T 4 when the data acquisition time interval T 3 of start-up mode should be than stable driving mode is short (as start-up mode is set to 30s, stable driving mode is set to 60s), be not more than certain the 9th default threshold value P3 if continue for some time pressure variation in start-up mode, and acceleration/accel is not less than certain the tenth default threshold value a4, is switched to stable driving mode.Under driving mode, should keep often waking up and once send a secondary data.Under the pattern of parking or park mode, detect that moving velocity has met or exceeded the 3rd threshold value v1(as 20km/h) or acceleration/accel switch to this pattern while meeting or exceeding the 4th threshold value a2.
Park mode: represent that automobile is temporary has stopped getting off, this lower short period of pattern, interval T 5(was as 60s) gather a secondary data, under park mode, should keep often waking up and once send out a secondary data.When detecting that under driving mode moving velocity is less than certain the 7th default threshold value v2(as 10km/h) or acceleration/accel be less than the 8th default threshold value a3(as 3.5g), be switched to park mode.Under park mode, when detecting that pressure and acceleration/accel all continue one section of longer time T 8(as 15min) unchanged or only have subtle change, be switched to the pattern of parking.
Transformation pattern: represent that the pressure within vehicle tire pressure a period of time under certain pattern changes the 5th threshold value P2 that has reached certain restriction, this pattern should comprise particularly the transformation pattern of parking, suspend transformation pattern and the transformation pattern etc. of travelling.Under transformation pattern, for more real-time monitoring tire pressure, shorter (as being set to 10s) that test should arrange the time gap T6 of image data, the transformation of especially travelling pattern should shorter (as being set to 5s).Under transformation pattern, should keep often waking up and once send out a secondary data.When detecting under the pattern of parking, driving mode or park mode that change value of pressure is greater than certain the 6th default threshold value P3(as 15KPa), switch to respectively the transformation pattern of parking, the transformation of travelling pattern or suspend transformation pattern.Equally, in the transformation pattern of parking, the transformation of travelling pattern or suspend under transformation pattern, when detecting that tire pressure and acceleration/accel continue for some time the unchanged or subtle change of T7, switch to the pattern of parking, driving mode or park mode.
The embodiment of the present invention one adopts the method for various states mode division, when guaranteeing the validity, reliability of tire pressure monitoring and accuracy, effectively reduces power consumption, extends the service life of battery.
embodiment bis-
The embodiment of the present invention two proposes a kind of device of tire pressure monitoring.As shown in Figure 3, the device of the embodiment of the present invention two comprises acquisition module 10 and handover module 20, wherein,
Acquisition module 10 for gathering tire prison data under current state pattern.The acquisition module 10 of the embodiment of the present invention two can be MCU, pressure sensor, temperature sensor and acceleration pick-up are arranged on tire, and acquisition module 10 gathers tire pressure, temperature and the acceleration/accel on tire by the sensor and controls above-mentioned tire prison data processing and transmission etc.
Handover module 20 is for supervising data exchange state model according to the tire gathering.The embodiment of the present invention two is difference divided following various state model in advance according to tire pressure, temperature and acceleration/accel, under different conditions pattern, adopts different data acquisitions and send mode.As shown in Figure 2, the relevant tire prison data that handover module 20 collects according to acquisition module 10, determine whether continue to use current state model collection and send data, or switch to other state model, gather and send data according to other state model.
Memory module: represent that tyre pressure sensor is not yet installed on tire, should be set to maximum duration interval T 1(under this pattern as 200s) gather a secondary data, countless according to transmission, least in power-consuming.
The pattern of parking: represent that automobile, in parked state, now changes without pressure, acceleration/accel is zero, and this lower long period of pattern, interval T 2(was as 120s) gather a secondary data, countless according to transmission, power consumption is lower.When detecting that under memory module tire pressure is greater than certain default first threshold P1(as 200KPa) or acceleration/accel be greater than certain default Second Threshold a1(as 5g) or the combination of these two parameters while satisfying condition, be switched to the pattern of parking.
Driving mode: represent that automobile driving speed has met or exceeded certain specific the 3rd threshold value v1(as 20km/h) or acceleration/accel to meet or exceed the 4th default threshold value a2(Second Threshold a1 identical with the 4th threshold value a2 or not identical), in motoring condition.This pattern further comprises start-up mode (by the stable excessive pattern of travelling of parking) and stable driving mode.Wherein, data acquisition time interval T 4 when the data acquisition time interval T 3 of start-up mode should be than stable driving mode is short (as start-up mode is set to 30s, stable driving mode is set to 60s), be not more than certain the 9th default threshold value P3 if continue for some time pressure variation in start-up mode, and acceleration/accel is not less than certain the tenth default threshold value a4, is switched to stable driving mode.Under driving mode, should keep often waking up and once send a secondary data.Under the pattern of parking or park mode, detect that moving velocity has met or exceeded the 3rd threshold value v1(as 20km/h) or acceleration/accel switch to this pattern while meeting or exceeding the 4th threshold value a2.
Park mode: represent that automobile is temporary has stopped getting off, this lower short period of pattern, interval T 5(was as 60s) gather a secondary data, under park mode, should keep often waking up and once send out a secondary data.When detecting that under driving mode moving velocity is less than certain the 7th default threshold value v2(as 10km/h) or acceleration/accel be less than the 8th default threshold value a3(as 3.5g), be switched to park mode.Under park mode, when detecting that pressure and acceleration/accel all continue one section of longer time T 8(as 15min) unchanged or only have subtle change, be switched to the pattern of parking.
Transformation pattern: represent that the pressure within vehicle tire pressure a period of time under certain pattern changes the 5th threshold value P2 that has reached certain restriction, this pattern should comprise particularly the transformation pattern of parking, suspend transformation pattern and the transformation pattern etc. of travelling.Under transformation pattern, for more real-time monitoring tire pressure, shorter (as being set to 10s) that test should arrange the time gap T6 of image data, the transformation of especially travelling pattern should shorter (as being set to 5s).Under transformation pattern, should keep often waking up and once send out a secondary data.When detecting under the pattern of parking, driving mode or park mode that change value of pressure is greater than certain the 6th default threshold value P3(as 15KPa), switch to respectively the transformation pattern of parking, the transformation of travelling pattern or suspend transformation pattern.Equally, in the transformation pattern of parking, the transformation of travelling pattern or suspend under transformation pattern, when detecting that tire pressure and acceleration/accel continue for some time the unchanged or subtle change of T7, switch to the pattern of parking, driving mode or park mode.
The device of the embodiment of the present invention two is by the division of various states pattern, when guaranteeing the validity, reliability of tire pressure monitoring and accuracy, effectively reduces power consumption, extends the service life of battery.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for tire pressure monitoring, is characterized in that, described method comprises the steps:
Under current state pattern, gather tire prison data;
According to the tire prison data exchange state model of described collection.
2. the method for claim 1, is characterized in that, described collection tire prison data are further:
Gather tire prison data by being arranged at pressure sensor, temperature sensor and/or the acceleration pick-up of tire.
3. the method for claim 1, is characterized in that, described state model is memory module, the pattern of parking, driving mode, park mode or transformation pattern.
4. method as claimed in claim 3, is characterized in that, the described prison of the tire according to described collection data exchange state model comprises:
In the time detecting that under memory module tire pressure is greater than default first threshold P1 or acceleration/accel and is greater than default Second Threshold a1, switch to the pattern of parking;
When being more than or equal to the 4th threshold value a2, the 3rd threshold value v1 or acceleration/accel switch to driving pattern when detecting under the pattern of parking or park mode that moving velocity is more than or equal to;
When detecting that under park mode pressure and acceleration/accel all continue a default time T 8 when unchanged, are switched to the pattern of parking.
5. the method as described in claim 3 or 4, is characterized in that, described method also comprises:
Described transformation pattern comprises the transformation pattern of parking, suspends transformation pattern and the transformation pattern of travelling, when the transformation pattern of parking being detected, suspending under transformation pattern or the transformation pattern of travelling tire pressure and acceleration/accel, to continue a preset time T 7 unchanged, switches to respectively the pattern of parking, driving mode and park mode.
6. a device for tire pressure monitoring, is characterized in that, described device comprises:
Acquisition module, for gathering tire prison data under current state pattern;
Handover module, for supervising data exchange state model according to the tire of described collection.
7. device as claimed in claim 6, is characterized in that, described acquisition module specifically for:
Gather tire prison data by being arranged at pressure sensor, temperature sensor and/or the acceleration pick-up of tire.
8. device as claimed in claim 6, is characterized in that, described state model is memory module, the pattern of parking, driving mode, park mode or transformation pattern.
9. device as claimed in claim 8, is characterized in that, described handover module specifically for:
In the time detecting that under memory module tire pressure is greater than default first threshold P1 or acceleration/accel and is greater than default Second Threshold a1, switch to the pattern of parking;
When being more than or equal to the 4th threshold value a2, the 3rd threshold value v1 or acceleration/accel switch to driving pattern when detecting under the pattern of parking or park mode that moving velocity is more than or equal to;
When detecting that under park mode pressure and acceleration/accel all continue a default time T 8 when unchanged, are switched to the pattern of parking.
10. the device as described in any one in claim 6 to 9, it is characterized in that, described device also comprises voltage changing module, for comprising the transformation pattern of parking when described transformation pattern, suspending transformation pattern and the transformation pattern of travelling, and it is unchanged to detect that tire pressure and acceleration/accel continue a preset time T 7, switches to respectively the pattern of parking, driving mode and park mode.
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