CN111674357A - False triggering prevention system and method for automobile trunk kick induction sensor - Google Patents
False triggering prevention system and method for automobile trunk kick induction sensor Download PDFInfo
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- CN111674357A CN111674357A CN202010374506.4A CN202010374506A CN111674357A CN 111674357 A CN111674357 A CN 111674357A CN 202010374506 A CN202010374506 A CN 202010374506A CN 111674357 A CN111674357 A CN 111674357A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/2054—Means to switch the anti-theft system on or off by foot gestures
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Abstract
The invention discloses a false triggering prevention system and method for an automobile trunk kick induction sensor, which belong to the technical field of automobile safety. By the system and the method, the anti-interference capability under working conditions of different weather environments, different ground environments, non-artificial triggering and the like is effectively improved, the luggage case is prevented from being opened by false triggering, and the safety and the stability of the vehicle are improved.
Description
Technical Field
The invention belongs to the technical field of automobile safety, and particularly relates to a false triggering prevention system and method for an automobile trunk kick induction sensor.
Background
At present, the capacitive scheme is commonly adopted for the inductive opening of the automobile trunk, namely two inductive antennas are arranged on the inner side of a rear bumper of the automobile in parallel, and a sensor judges a trunk opening request of a user through capacitance change characteristics generated by the identification of kick action, so that a trunk opening request signal is sent out, and a related actuator completes the opening action after receiving the trunk opening request signal. According to the physical characteristics of the capacitance sensor, the trunk is opened in the response and is easily influenced by working conditions such as different weather environments such as rain, snow, bushes, grasslands, soil, stone rank, well lid, ground environment and small animals passing through the induction area, so that the sensor generates misjudgment to open the trunk, and the safety and the comfort of the vehicle are reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for preventing the false triggering of the opening of the automobile trunk under different environments or working conditions is provided in order to solve the problems that the existing automobile trunk kick induction sensor mistakenly sends a trunk opening request and the like.
The invention is realized by the following technical scheme:
an automobile trunk kick induction sensor false triggering prevention system comprises a power management module, an LIN transceiver, a micro-processing unit, a capacitance acquisition module and two capacitance induction antennas, wherein the two capacitance induction antennas are connected with the ground to form a capacitor, the capacitance acquisition module acquires capacitance values of the two capacitance induction antennas in real time and transmits the acquired capacitance values to the micro-processing unit, and the micro-processing unit performs data processing and logic judgment in real time; the power management module processes and converts the voltage of the storage battery, provides stable power supply for the system and detects the power supply so as to ensure the reliable operation of the system; the LIN transceiver is used as an LIN communication interface and used for transmitting the trunk opening request signal to the vehicle body control system according to an LIN communication protocol.
An automobile trunk kick induction sensor false triggering prevention method comprises the following specific steps:
the method comprises the following steps: respectively acquiring capacitance value data of the two capacitance induction antennas in real time through a capacitance acquisition module, respectively averaging a plurality of data acquired by the two capacitance induction antennas in real time, and taking the average as a static environment value at different time, wherein the static environment value continuously changes along with time;
step two: the capacitance acquisition module respectively acquires the capacitance values of sampling points of two capacitance induction antennas at a certain moment and transmits the acquired capacitance values to the micro-processing unit, and the micro-processing unit performs data processing in real time;
the data processing comprises: making a capacitance difference value between the capacitance value of a sampling point at a certain moment and the static environment value of the sampling point at the moment, and recording the capacitance difference value and the sampling point moment;
step three: and C, carrying out logic judgment according to the capacitance difference value and the sampling point time obtained in the step two, when the conditions are met, determining that the condition is a kick starting action, and sending a trunk induction starting request signal to a vehicle body control system by the micro-processing unit through the LIN transceiver to start the trunk.
Further, the number of the plurality of data in the step one is at least 8.
Further, the logic judgment of the third step judges that the triggering action is effective and sends a trunk opening request when the following judgment conditions are simultaneously met; if the condition is not met, judging that the triggering action is invalid, and not opening the luggage case;
the judgment conditions are as follows:
(1) the difference value between the two induction antennas and the static environment value reaches a trigger threshold value, and the time for the induction antenna close to the tail of the vehicle to reach the trigger threshold value is earlier than that of the other induction antenna;
(2) and the time interval of the two induction antennas reaching the trigger threshold is less than 0.2 second.
Two induction antennas are simultaneously collected, but the moment when the difference value reaches the trigger threshold value is an interval, the action is considered as an effective kicking action, and in order to distinguish kicking characteristics, legs or feet firstly pass through the induction antenna close to the tail part of the vehicle during kicking.
Further, the trigger threshold is determined by real vehicle calibration, and the real vehicle calibration method is as follows:
(1) acquiring data under conventional working conditions:
under the conventional working condition, a plurality of operators with different posture characteristics are searched for kicking for a plurality of times in the induction area, the capacitance value data generated by different operations of each time is recorded, and the difference value between the capacitance value data and the static environment value is calculated;
(2) data acquisition under special working conditions:
respectively carrying out data acquisition and recording according to the method in the step (1) under the following working condition table 1;
TABLE 1 Special working condition table
And acquiring and comparing difference data of the conventional working condition and the special working condition, and selecting the maximum difference as a trigger threshold.
Further, the conventional working conditions are the states of vehicle stop, non-rainy and snowy weather, no strong electromagnetic interference, no trees, metal objects, human beings or animals and the like around the induction area;
the complex working conditions are states of rainy and snowy weather, strong electromagnetic interference, trees, metal objects, people or animals around the induction area and the like.
Compared with the prior art, the invention has the following advantages:
the system and the method for preventing the false triggering of the opening of the automobile trunk under different environments or working conditions optimize the problem of the conventional kick induction opening of the automobile trunk, solve the problems of false opening of the trunk under different weather environments such as rain, snow and the like, different ground environments such as bushes, grasslands, soil, stone steps, well covers and the like, and special working conditions such as passing of small animals from an induction area, and improve the safety, reliability and comfort of an automobile.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram illustrating capacitance variation curves of two antenna channels in a conventional environment;
FIG. 2 is a schematic diagram illustrating capacitance variation curves of two antenna channels in a complex environment;
fig. 3 is a system schematic diagram of an automobile trunk kick induction sensor false triggering prevention system of the invention.
Detailed Description
The following embodiments are only used for illustrating the technical solutions of the present invention more clearly, and therefore, the following embodiments are only used as examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1
As can be seen from fig. 1, the real-time capacitance value is the real capacitance value of the sensing antenna at the moment, the static environment value is the operation reference value obtained after sampling the real-time capacitance value, and the difference between the static environment value and the real-time capacitance value is determined, that is, the real-time capacitance value is the difference between the static environment value and the real-time capacitance value
The difference is a real-time capacitance value-static environment value;
wherein: the conventional environment is as follows: the state of the vehicle stopping, the weather without rain or snow, no strong electromagnetic interference, no trees, metal objects, people or animals around the induction area, and the like;
the complex environment is as follows: in rainy and snowy weather, strong electromagnetic interference exists, and trees, metal objects, human beings or animals exist around the induction area;
as can be seen from fig. 1, in a conventional environment, the real-time capacitance value caused by kicking action changes clearly and regularly, the static environment value is stable without severe fluctuation, and kicking action is easier to identify in such a case;
as can be seen from fig. 2, in a complex environment, the capacitance value on the sensing antenna is influenced by the external environment and changes violently, the real-time capacitance value change caused by kicking action is not easy to identify, and if the static environment value is not processed, the phenomenon that effective kicking action is mistakenly identified when no kicking action occurs, so that a trunk opening request is sent.
As shown in fig. 3, the false triggering prevention system for the automobile trunk kick induction sensor of the invention comprises a power management module, an LIN transceiver, a micro-processing unit, a capacitance acquisition module and two capacitance induction antennas, wherein the two capacitance induction antennas are connected with the ground to form a capacitor, the capacitance acquisition module acquires capacitance values of the two capacitance induction antennas in real time and transmits the acquired capacitance values to the micro-processing unit, and the micro-processing unit performs data processing and logic judgment in real time; the power management module processes and converts the voltage of the storage battery, provides stable power supply for the system and detects the power supply so as to ensure the reliable operation of the system; the LIN transceiver, which serves as an LIN communication interface, is responsible for transmitting the trunk activation request signal to the vehicle body control system in accordance with the LIN communication protocol.
An automobile trunk kick induction sensor false triggering prevention method comprises the following specific steps:
the method comprises the following steps: respectively acquiring capacitance value data of the two capacitance induction antennas in real time through a capacitance acquisition module, respectively averaging a plurality of data acquired by the two capacitance induction antennas in real time, and taking the average as a static environment value at different time, wherein the static environment value continuously changes along with time;
step two: the capacitance acquisition module respectively acquires the capacitance values of sampling points of two capacitance induction antennas at a certain moment and transmits the acquired capacitance values to the micro-processing unit, and the micro-processing unit performs data processing in real time;
the data processing comprises: making a capacitance difference value between the capacitance value of a sampling point at a certain moment and the static environment value of the sampling point at the moment, and recording the capacitance difference value and the sampling point moment;
step three: and C, carrying out logic judgment according to the capacitance difference value and the sampling point time obtained in the step two, when the conditions are met, determining that the condition is a kick starting action, and sending a trunk induction starting request signal to a vehicle body control system by the micro-processing unit through the LIN transceiver to start the trunk.
Further, the number of the plurality of data in the step one is at least 8.
Further, the logic judgment of the third step judges that the triggering action is effective and sends a trunk opening request when the following judgment conditions are simultaneously met; if the condition is not met, judging that the triggering action is invalid, and not opening the luggage case;
the judgment conditions are as follows:
(1) the difference value between the two induction antennas and the static environment value reaches a trigger threshold value, and the time for the induction antenna close to the tail of the vehicle to reach the trigger threshold value is earlier than that of the other induction antenna;
(2) and the time interval of the two induction antennas reaching the trigger threshold is less than 0.2 second.
Two induction antennas are simultaneously collected, but the moment when the difference value reaches the trigger threshold value is an interval, the action is considered as an effective kicking action, and in order to distinguish kicking characteristics, legs or feet firstly pass through the induction antenna close to the tail part of the vehicle during kicking.
Further, the trigger threshold is determined by real vehicle calibration, and the real vehicle calibration method is as follows:
(1) and acquiring data of conventional working conditions:
under a normal working condition, 3 operators with different posture characteristics are searched for kicking 10 times in the induction area, capacitance value data generated by different operations of each time are recorded, and the difference value between the capacitance value data and a static environment value is calculated;
(2) and special working condition data acquisition:
respectively carrying out data acquisition and recording according to the method in the step (1) under the following working condition table 1;
TABLE 1 Special working condition table
And acquiring and comparing difference data of the conventional working condition and the special working condition, and selecting the maximum difference as a trigger threshold.
As shown in fig. 2, the micro-processing unit performs sampling processing operation on the collected capacitance value to obtain a static environment value, and the formula is as follows:
Cavg1＝(C(11)+C(12)+C(13)+C(14)+C(15)+C(16)+C(17)+C(18))/8；
Cavg2＝(C(21)+C(22)+C(23)+C(24)+C(25)+C(26)+C(27)+C(28))/8；
c (11), C (12), C (13), C (14), C (15), C (16), C (17) and C (18) are capacitance values of the first capacitive sensing antenna at different sampling moments, wherein the sampling moment of C (11) is t1, and the sampling moments of C (12), C (13), C (14), C (15), C (16), C (17) and C (18) are all before t 1;
c (21), C (22), C (23), C (24), C (25), C (26), C (27) and C (28) are capacitance values of the second capacitive sensing antenna at different sampling moments, wherein the sampling moment of C (21) is t2, and the sampling moments of C (22), C (23), C (24), C (25), C (26), C (27) and C (28) are all before t 2;
the static environment value is updated in real time, and the purpose of self-adapting to the environment is achieved. According to the static environment value, respectively calculating the difference value between the real-time capacitance value and the static environment value of the two capacitance induction antennas in real time, and recording sampling time points t1 and t2, wherein the application formula is as follows:
D-value1＝C(11)-Cavg1
D-value2＝C(21)-Cavg2
when D-value is larger than D0 (trigger threshold), t1 is smaller than t2, and t2-t1 is smaller than 0.2S, judging that the trigger action is effective, and sending a trunk opening request; if the condition is not met, the triggering action is judged to be invalid, and the trunk is not opened.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. An automobile trunk kick induction sensor false triggering prevention system is characterized by comprising a power management module, an LIN transceiver, a micro-processing unit, a capacitance acquisition module and two capacitance induction antennas, wherein the two capacitance induction antennas are connected with the ground to form a capacitor; the power management module processes and converts the voltage of the storage battery, provides stable power supply for the system and detects the power supply so as to ensure the reliable operation of the system; the LIN transceiver is used as an LIN communication interface and used for transmitting the trunk opening request signal to the vehicle body control system according to an LIN communication protocol.
2. The anti-triggering method of the anti-false triggering system of the automobile trunk kick induction sensor according to claim 1 is characterized by comprising the following specific steps of:
the method comprises the following steps: respectively acquiring capacitance value data of the two capacitance induction antennas in real time through a capacitance acquisition module, respectively averaging a plurality of data acquired by the two capacitance induction antennas in real time, and taking the average as a static environment value at different time, wherein the static environment value continuously changes along with time;
step two: the capacitance acquisition module respectively acquires the capacitance values of sampling points of two capacitance induction antennas at a certain moment and transmits the acquired capacitance values to the micro-processing unit, and the micro-processing unit performs data processing in real time;
the data processing comprises: making a capacitance difference value between the capacitance value of a sampling point at a certain moment and the static environment value of the sampling point at the moment, and recording the capacitance difference value and the sampling point moment;
step three: and C, carrying out logic judgment according to the capacitance difference value and the sampling point time obtained in the step two, when the conditions are met, determining that the condition is a kick starting action, and sending a trunk induction starting request signal to a vehicle body control system by the micro-processing unit through the LIN transceiver to start the trunk.
3. The method as claimed in claim 2, wherein the plurality of data in the step one is at least 8.
4. The false triggering prevention method for the automobile trunk kick induction sensor according to claim 2, wherein the logic judgment of the third step is that when the following judgment conditions are simultaneously met, the judgment is effective triggering action, and a trunk opening request is sent; if the condition is not met, judging that the triggering action is invalid, and not opening the luggage case;
the judgment conditions are as follows:
(1) the difference value between the two induction antennas and the static environment value reaches a trigger threshold value, and the time for the induction antenna close to the tail of the vehicle to reach the trigger threshold value is earlier than that of the other induction antenna;
(2) and the time interval of the two induction antennas reaching the trigger threshold is less than 0.2 second.
Two induction antennas are simultaneously collected, but the moment when the difference value reaches the trigger threshold value is an interval, the action is considered as an effective kicking action, and in order to distinguish kicking characteristics, legs or feet firstly pass through the induction antenna close to the tail part of the vehicle during kicking.
5. The false triggering prevention method for the automobile trunk kick induction sensor according to claim 2, wherein the triggering threshold is determined by real vehicle calibration, and the real vehicle calibration method comprises the following steps:
(1) and acquiring data of conventional working conditions:
under the conventional working condition, a plurality of operators with different posture characteristics are searched for kicking for a plurality of times in the induction area, the capacitance value data generated by different operations of each time is recorded, and the difference value between the capacitance value data and the static environment value is calculated;
(2) and special working condition data acquisition:
respectively carrying out data acquisition and recording according to the method in the step (1) under the following working condition table 1;
TABLE 1 Special working condition table
And acquiring and comparing difference data of the conventional working condition and the special working condition, and selecting the maximum difference as a trigger threshold.
6. The false triggering prevention method for the automobile trunk kick induction sensor according to claim 2, wherein the normal working condition is the state of a vehicle stopping, non-rainy and snowy weather, no strong electromagnetic interference, no trees, metal objects, human beings or animals around the induction area;
the complex working conditions are states of rains and snows, strong electromagnetic interference, trees, metal objects, people or animals around the induction area.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113515069A (en) * | 2021-07-06 | 2021-10-19 | 玄微子工业技术(深圳)有限公司 | Kick control system based on recognizer |
| CN114482754A (en) * | 2022-01-26 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Vehicle trunk opening method and device, vehicle and storage medium |
| CN115366842A (en) * | 2022-08-15 | 2022-11-22 | 一汽奔腾轿车有限公司 | Automobile kicking trunk control system and method |
| CN116889300A (en) * | 2023-09-11 | 2023-10-17 | 深圳市瑞之辰科技有限公司 | Output power adjusting circuit, adjusting method and aerosol generating device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204028592U (en) * | 2014-07-02 | 2014-12-17 | 北京奥特易电子科技有限责任公司 | Arrangements for automotive doors or the contactless starting controller of boot and automobile |
| CN205836766U (en) * | 2016-06-15 | 2016-12-28 | 北京兴科迪科技有限公司 | A kind of based on the boot open system kicking sensor |
| CN108331484A (en) * | 2018-01-05 | 2018-07-27 | 上海纳恩汽车技术有限公司 | A kind of automobile tail gate kicking sensor system |
| CN109281580A (en) * | 2018-09-29 | 2019-01-29 | 武汉佳特轿车零部件有限公司 | Electric tail gate kicking sensor and its control method for automobile tail gate |
| CN110805367A (en) * | 2019-11-12 | 2020-02-18 | 合肥长安汽车有限公司 | Trunk opening control method with driving protection function |
-
2020
- 2020-05-06 CN CN202010374506.4A patent/CN111674357B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204028592U (en) * | 2014-07-02 | 2014-12-17 | 北京奥特易电子科技有限责任公司 | Arrangements for automotive doors or the contactless starting controller of boot and automobile |
| CN205836766U (en) * | 2016-06-15 | 2016-12-28 | 北京兴科迪科技有限公司 | A kind of based on the boot open system kicking sensor |
| CN108331484A (en) * | 2018-01-05 | 2018-07-27 | 上海纳恩汽车技术有限公司 | A kind of automobile tail gate kicking sensor system |
| CN109281580A (en) * | 2018-09-29 | 2019-01-29 | 武汉佳特轿车零部件有限公司 | Electric tail gate kicking sensor and its control method for automobile tail gate |
| CN110805367A (en) * | 2019-11-12 | 2020-02-18 | 合肥长安汽车有限公司 | Trunk opening control method with driving protection function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113515069A (en) * | 2021-07-06 | 2021-10-19 | 玄微子工业技术(深圳)有限公司 | Kick control system based on recognizer |
| CN114482754A (en) * | 2022-01-26 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Vehicle trunk opening method and device, vehicle and storage medium |
| CN114482754B (en) * | 2022-01-26 | 2023-10-31 | 广州小鹏汽车科技有限公司 | Vehicle trunk opening method and device, vehicle and storage medium |
| CN115366842A (en) * | 2022-08-15 | 2022-11-22 | 一汽奔腾轿车有限公司 | Automobile kicking trunk control system and method |
| CN116889300A (en) * | 2023-09-11 | 2023-10-17 | 深圳市瑞之辰科技有限公司 | Output power adjusting circuit, adjusting method and aerosol generating device |
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