CN105518470B - Vibration sensor and sensitivity adjustment method thereof - Google Patents
Vibration sensor and sensitivity adjustment method thereof Download PDFInfo
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- CN105518470B CN105518470B CN201380079407.1A CN201380079407A CN105518470B CN 105518470 B CN105518470 B CN 105518470B CN 201380079407 A CN201380079407 A CN 201380079407A CN 105518470 B CN105518470 B CN 105518470B
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- 230000035945 sensitivity Effects 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0891—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values with indication of predetermined acceleration values
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/20—Calibration, including self-calibrating arrangements
- G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
- G08B29/26—Self-calibration, e.g. compensating for environmental drift or ageing of components by updating and storing reference thresholds
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
Abstract
Disclosed is a method for adjusting the sensitivity of a vibration sensor for sensing an attack suffered by a device equipped with a vibration sensor, wherein the vibration sensor is provided with mode setting means and the method comprises the steps of: a) setting the vibration sensor to a mounting mode by means of the mode setting means and energizing the vibration sensor (S1); b) simulating a desired attack over a predetermined period of time and recording an amplitude of the attack over the predetermined period of time by means of the vibration sensor (S2); and c) determining a sensitivity of the vibration sensor based at least on the amplitude of the attack (S3). A corresponding vibration sensor is also disclosed. The sensitivity of the vibration sensor can be adjusted quickly, simply and accurately.
Description
Technical Field
The present invention relates to a method for adjusting the sensitivity of a vibration sensor for sensing an attack on a device equipped with a vibration sensor, which method can be performed very quickly, simply and accurately, and a corresponding vibration sensor.
Background
With the development of social and technical progress, more and more convenience devices such as automobiles, motorcycles, Automatic Teller Machines (ATMs), and the like are appearing in our daily lives. These devices are often equipped with an alarm device to counter the attack, and when the device is attacked, the alarm device can sense the attack and issue a corresponding alarm, such as an audible alarm.
Currently, the alarm device is typically a vibration sensor. That is, whether the device is under attack is determined based on the vibration signal detected by the vibration sensor. The existing vibration sensor mainly performs the following detection method. A threshold value is preset, the amplitude of the vibration signal detected by the vibration sensor is compared with said threshold value, and exceeding the threshold value means that the device is under attack and a corresponding alarm is issued thereby. In some cases, in addition to comparing the amplitude of the vibration signal detected by the vibration sensor to a threshold, one or more decision conditions need to be met to further reduce false positives or false negatives.
Therefore, the existing detection method involves comparison of the amplitude of the vibration signal with a threshold value, and when the threshold value is set too low, it is easy to mistake the noise for attack, resulting in false alarm. Conversely, when the threshold is set too high, some alarms may be missed and result in a greater loss of the corresponding device.
It will be appreciated by those skilled in the art that the threshold corresponds to the sensitivity of the vibration sensor and that the vibration sensor may need to be adjusted for use in different situations and locations. In general, a vibration sensor is provided with a sensitivity adjustment device. When the vibration sensor has been mounted on the apparatus, the installer adjusts the sensitivity by means of the sensitivity adjustment device in the following manner: the estimated threshold value is first set by means of the sensitivity adjustment device according to his/her experience and then checked by means of a simulated attack. This is therefore a trial and error method and cannot even establish an appropriate sensitivity for a particular situation. Furthermore, it is very difficult and complicated to adjust the sensitivity well.
It is therefore desirable to provide a method for adjusting the sensitivity of a vibration sensor that can be performed quickly, simply and accurately, and a corresponding sensor.
Disclosure of Invention
Based on the problems of the prior art, the present invention aims to provide a simpler method for accurately adjusting the sensitivity of a vibration sensor and a corresponding vibration sensor.
To achieve the object, in one aspect, the present invention provides a method for adjusting the sensitivity of a vibration sensor for sensing an attack on a device equipped with the vibration sensor, the vibration sensor being provided with mode setting means and the method comprising the steps of:
a) setting the vibration sensor to a mounting mode by means of the mode setting means and energizing the vibration sensor;
b) simulating a desired attack over a predetermined period of time and recording the amplitude of the attack over the predetermined period of time by means of the vibration sensor; and is
c) Determining a sensitivity of the vibration sensor based at least on the amplitude of the attack.
According to a preferred embodiment of the present invention, the vibration sensor is provided with an indicating unit; and the indicating unit generates a first indication when the vibration sensor is set to the mounting mode and powered on; and/or when the predetermined time period is over, the indicating unit sends out a second indication.
According to a preferred embodiment of the present invention, the predetermined period of time starts from a point of time when the vibration sensor is set to the installation mode and energized; and/or the predetermined period of time is about 3 minutes.
According to a preferred embodiment of the invention, ambient noise is evaluated or measured and taken into account when determining the sensitivity of the vibration sensor or when simulating the desired attack; and/or determining the sensitivity of the vibration sensor based at least on the maximum amplitude of the attack, and preferably the sensitivity of the vibration sensor is determined to be equal to the maximum amplitude of the attack, or about 30%, about 20%, or about 10% greater than the maximum amplitude of the attack.
According to a preferred embodiment of the invention, the determined sensitivity of the vibration sensor is assigned to a variable of a program stored in a microprocessor of the vibration sensor or to a register of the microprocessor, so that the vibration sensor can be operated with the determined sensitivity; or the vibration sensor is provided with sensitivity adjustment means, and when the sensitivity of the vibration sensor is determined, the vibration sensor is switched from the mounting mode to the normal mode by the mode setting means, and then the determined sensitivity of the vibration sensor is set by the sensitivity adjustment means.
According to a preferred embodiment of the present invention, the sensitivity adjustment device includes a first DIP (dual inline-pin package) switch and a potentiometer, the first DIP switch is adjustable to select a sensitivity range of the vibration sensor, and the potentiometer is adjustable to set a sensitivity of the vibration sensor; when the first DIP switch needs to be adjusted for the determined sensitivity of the vibration sensor, the indicating unit sends out a third indication; when only the potentiometer needs to be adjusted, the indicating unit gives a fourth indication different from the third indication; and when the first DIP switch and the potentiometer are adjusted, the indicating unit is turned off or gives a fifth indication different from the third indication and the fourth indication.
According to a preferred embodiment of the present invention, the vibration sensor is powered off when the determined sensitivity of the vibration sensor is set; and when the vibration sensor is powered up again, the vibration sensor will be placed in a normal operating mode to enable the vibration sensor to operate at the determined sensitivity.
According to a preferred embodiment of the invention, the indication unit comprises or is configured as an LED; and/or the mode setting device is configured as a second DIP switch; and/or the predetermined period of time is adjustable.
In order to achieve the above object, in another aspect, the present invention provides a vibration sensor for sensing an attack to which a device equipped with the vibration sensor is subjected, the vibration sensor comprising:
a sensing unit adapted to sense a vibration signal resulting from the attack;
mode setting means adapted to set the vibration sensor to a mounting mode in which a sensitivity of the vibration sensor is allowed to be determined based on at least an amplitude of a simulated attack; and is
A microprocessor adapted to analyze and process the vibration signal based at least on the determined sensitivity of the vibration sensor.
According to a preferred embodiment of the present invention, the vibration sensor further comprises sensitivity adjustment means, and when the sensitivity of the vibration sensor is determined, the vibration sensor is set from the mounting mode to a normal mode by means of the mode setting means, and then the determined sensitivity of the vibration sensor is set by means of the sensitivity adjustment means.
According to a preferred embodiment of the present invention, the sensitivity adjustment device includes a first DIP switch that can be adjusted to select a sensitivity range of the vibration sensor, and a potentiometer that can be adjusted to set a sensitivity of the vibration sensor; and/or the mode setting device is configured as a second DIP switch.
Drawings
The invention and its advantages will be further understood by reading the detailed description of some preferred exemplary embodiments with reference to the attached drawings. The attached drawings are as follows:
FIG. 1 is a block diagram illustrating the basic components of a preferred exemplary embodiment of a vibration sensor for sensing attacks on a device equipped with the vibration sensor.
FIG. 2 is a flow chart illustrating a preferred exemplary embodiment of a method for adjusting the sensitivity of a vibration sensor.
Detailed Description
A vibration sensor according to a preferred exemplary embodiment of the present invention will now be described with reference to fig. 1. As mentioned above, the vibration sensors are typically mounted on some vital equipment to sense possible attacks on the equipment and to issue an alarm when it is determined that the attack is of a real attack that may damage the equipment and/or may cause any property damage.
As shown in fig. 1, the vibration sensor 1 mainly includes a sensing unit 2 such as an acceleration sensor, a sensitivity adjustment device 3 for adjusting the sensitivity of the vibration sensor 1, an indicating unit 4 at least for helping to adjust the sensitivity, an alarm unit 5 for giving an alarm in an optical and/or acoustic manner when a real attack is detected, and a microprocessor 6 for analyzing and processing a vibration signal using a predetermined program based on at least the adjusted sensitivity, wherein the sensing unit 2 is used for sampling the vibration signal transmitted to the sensing unit 2.
For example, the sensing unit 2 samples the vibration signal at a sampling frequency of about 2kHz, preferably 2 kHz.
It will be appreciated by those skilled in the art that the indication unit 4 and the alarm unit 5 are controlled by a microprocessor 6.
Preferably, as shown in FIG. 1, microprocessor 6 is electrically connected to output 8 of sensing unit 2 by means of a Serial Peripheral Interface (SPI) 7.
Preferably, the vibration sensor 1 can communicate with a control system (not shown) of the apparatus when the vibration sensor 1 is mounted on the apparatus and set to a normal operation mode.
In general, the sensitivity of the vibration sensor 1 corresponds to a certain threshold value. For example, by comparing the amplitude of the acquired vibration signal resulting from the attack with a threshold (and may additionally compare the attack duration with a predetermined duration), the microprocessor 6 analyses the vibration signal and issues an alarm when it is determined that the attack is of a real attack.
According to a preferred embodiment of the invention, the indication unit 4 may be or may comprise an LED.
For example, the sensitivity adjustment device 3 includes a first DIP switch and a Potentiometer (POT). The first DIP switch is configured to be able to set or select different sensitivity levels (ranges) for the vibration sensor 1 as needed, and the potentiometer is used to accurately set the sensitivity of the vibration sensor 1. That is, the first DIP switch and the potentiometer cooperate with each other to set the sensitivity of the vibration sensor 1. Once the first DIP switch and potentiometer are adjusted, the microprocessor 6 can determine the sensitivity of the vibration sensor 1 based on the adjusted position of the first DIP switch and potentiometer when the vibration sensor 1 is powered on. In this case, the sensitivity of the vibration sensor 1 can be maintained until the first DIP switch and/or the potentiometer is adjusted again.
Preferably, the vibration sensor has four different sensitivity levels.
It will be understood by those skilled in the art that the sensitivity adjustment device 3 is not limited to the details described above and that any type of device capable of adjusting the sensitivity of the vibration sensor 1 may be used.
As described above, when the vibration sensor 1 is mounted on a device, it is often necessary to adjust the sensitivity of the vibration sensor 1 according to different environments (such as ambient noise around the vibration sensor 1) and application requirements. In the following, a preferred exemplary embodiment of a method for adjusting the sensitivity of a vibration sensor 1 will be described in detail with reference to fig. 2.
Fig. 2 is a flowchart illustrating a method for adjusting the sensitivity of the vibration sensor 1. The method comprises four steps as follows.
In a first step S1, after the vibration sensor 1 has been mounted at an appropriate position on the apparatus, the vibration sensor 1 is set to a mounting mode by means of the mode setting means and then the vibration sensor 1 is energized. At this point, the vibration sensor 1 is ready to proceed to the following steps for simulating an attack.
It will be appreciated by those skilled in the art that the vibration sensor 1 may also be set to the installation mode before being installed at the appropriate location on the device.
According to a preferred exemplary embodiment, the mode setting device is a second DIP switch.
In a second step S2, a simulation operation of an attack with a desired amplitude is performed to determine the sensitivity of the vibration sensor 1. Preferably, the noise can be evaluated by the installer or measured by any suitable means and the desired attack amplitude determined on the basis of the noise taken into account. During the predetermined period of time of the simulation operation, the attack may be simulated by means of any suitable means and the vibration sensor 1 records the amplitude of the simulated attack during said predetermined period of time. After the predetermined period of time has ended, the sensitivity of the vibration sensor 1 is determined on the basis of the amplitude of the simulated attack.
For example, the sensitivity of the vibration sensor 1 is set equal to the maximum value of the recorded amplitudes, or is set larger than the maximum value of the recorded amplitudes by a preset value, for example, about 30%, about 20%, about 10%, or the like.
It will be appreciated by those skilled in the art that noise may also be taken into account only when determining the sensitivity of the vibration sensor 1.
For example, the predetermined period of time may be about 3 minutes, preferably 3 minutes. Preferably, the predetermined period of time is automatically started from the point of time at which the vibration sensor 1 is energized in the first step S1. The predetermined period of time may be preprogrammed in a program stored in the microprocessor 6. According to a preferred exemplary embodiment, said predetermined period of time is timed by means of an internal timer (not shown) of the microprocessor 6. More preferably, the predetermined time period may be adjusted as desired by means of a third DIP switch or any other suitable means. It will be appreciated by those skilled in the art that the predetermined period of time may also begin at any point in time after the first step is performed.
Preferably, when the predetermined period of time has ended, the microprocessor 6 can control the indicating unit 4 to issue an indication indicating that the simulation operation has ended.
In this case, the determined sensitivity of the vibration sensor 1 can be assigned to a variable of a program or to a register of the microprocessor 6, so that the vibration sensor 1 can be operated with the determined sensitivity. However, if the vibration sensor 1 is powered down, the determined sensitivity may be lost. Furthermore, although the determined sensitivity may be stored by some technical means known to the person skilled in the art, some users still wish to manually adjust the sensitivity of the vibration sensor 1, for example by means of a first DIP switch and a potentiometer. For this reason, the next step should be performed.
In a third step S3, the determined sensitivity of the vibration sensor 1 is set by means of the sensitivity adjustment device 3 (for example by means of a first DIP switch and a potentiometer). First, the vibration sensor 1 is switched from the mounting mode to the normal mode, preferably by means of a second DIP switch, and then the determined sensitivity of the vibration sensor 1 is set, preferably with the aid of an indication unit 4 (e.g. an LED). For example, when the microprocessor 6 determines that the first DIP switch needs to be adjusted for the determined sensitivity, then the LED flashes. When the first DIP switch is adjusted, the LED does not flash. At this point, if the LED is on, it indicates that the potentiometer needs to be adjusted. If the LED goes out, it indicates that the determined sensitivity has been adjusted.
Preferably, when the determined sensitivity is adjusted, the vibration sensor 1 is powered down so that the vibration sensor 1 can operate more reliably. In this case, the next step should be performed.
In a fourth step S4, the vibration sensor 1 is powered on again and the vibration sensor 1 will automatically be placed in the normal operating mode. In this case, the vibration sensor 1 will issue an alarm when the amplitude of any attack is greater than the set sensitivity (and one or more decision conditions must also be met if there are decision conditions).
The basic idea of the invention is to determine the sensitivity of the vibration sensor in the installation mode based on a simulated attack with a desired amplitude. It should be appreciated that the attack may be of any type as desired. Any method and vibration sensor that uses the basic idea described above falls within the scope of the present invention.
Although some embodiments have been illustrated, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. The appended claims and their equivalents are intended to cover all such modifications, substitutions and changes as fall within the true scope and spirit of the invention.
Claims (11)
1. A method for adjusting the sensitivity of a vibration sensor for sensing an attack on a device equipped with the vibration sensor, the vibration sensor being provided with mode setting means and the method comprising the steps of:
a) setting the vibration sensor to a mounting mode by means of the mode setting means and energizing the vibration sensor;
b) simulating a desired attack over a predetermined period of time and recording the amplitude of the attack over the predetermined period of time by means of the vibration sensor; and is
c) Determining a sensitivity of the vibration sensor based at least on the amplitude of the attack;
wherein the vibration sensor further comprises a sensitivity adjustment device and is further provided with an indication unit, and when the sensitivity of the vibration sensor is determined, the vibration sensor is set from the installation mode to a normal mode by means of the mode setting device, and then the determined sensitivity of the vibration sensor is set by means of the sensitivity adjustment device with the aid of the indication unit;
wherein the sensitivity adjustment device comprises a first DIP switch that is adjustable to select a sensitivity range of the vibration sensor and a potentiometer that is adjustable to set a sensitivity of the vibration sensor,
wherein the mode setting device is configured as a second DIP switch.
2. The method of claim 1,
the indication unit generates a first indication when the vibration sensor is set to the installation mode and powered on; and/or
When the predetermined period of time ends, the indicating unit issues a second indication.
3. The method according to claim 1 or 2,
the predetermined period of time starts from a point in time when the vibration sensor is set to the installation mode and energized; and/or
The predetermined period of time is about 3 minutes.
4. The method according to claim 1 or 2,
evaluating or measuring ambient noise and taking the ambient noise into account when determining the sensitivity of the vibration sensor or when simulating the expected attack; and/or
The sensitivity of the vibration sensor is determined based at least on the maximum amplitude of the attack, and the sensitivity of the vibration sensor is determined to be equal to the maximum amplitude of the attack.
5. The method according to claim 1 or 2,
when the first DIP switch needs to be adjusted for the determined sensitivity of the vibration sensor, the indicating unit sends out a third indication;
when only the potentiometer needs to be adjusted, the indicating unit gives a fourth indication different from the third indication; and is
When the first DIP switch and the potentiometer are adjusted, the indicating unit is turned off or gives a fifth indication different from the third indication and the fourth indication.
6. The method of claim 5,
when the determined sensitivity of the vibration sensor is set, powering off the vibration sensor; and is
When the vibration sensor is powered up again, the vibration sensor will be placed in a normal operating mode to enable the vibration sensor to operate at the determined sensitivity.
7. The method of claim 2,
the indicating unit comprises or is configured as an LED; and/or
The predetermined period of time is adjustable.
8. The method according to claim 1 or 2,
evaluating or measuring ambient noise and taking the ambient noise into account when determining the sensitivity of the vibration sensor or when simulating the expected attack; and/or
The sensitivity of the vibration sensor is determined based at least on the maximum amplitude of the attack and is determined to be 30% greater than the maximum amplitude of the attack.
9. The method according to claim 1 or 2,
evaluating or measuring ambient noise and taking the ambient noise into account when determining the sensitivity of the vibration sensor or when simulating the expected attack; and/or
The sensitivity of the vibration sensor is determined based at least on the maximum amplitude of the attack and is determined to be 20% greater than the maximum amplitude of the attack.
10. The method according to claim 1 or 2,
evaluating or measuring ambient noise and taking the ambient noise into account when determining the sensitivity of the vibration sensor or when simulating the expected attack; and/or
The sensitivity of the vibration sensor is determined based at least on the maximum amplitude of the attack and is determined to be 10% greater than the maximum amplitude of the attack.
11. A vibration sensor for sensing an attack on a device equipped with the vibration sensor, the vibration sensor comprising:
a sensing unit adapted to sense a vibration signal resulting from the attack;
mode setting means adapted to set the vibration sensor to a mounting mode in which a sensitivity of the vibration sensor is allowed to be determined based on at least an amplitude of a simulated attack;
a microprocessor adapted to analyze and process the vibration signal based at least on the determined sensitivity of the vibration sensor;
an indicating unit;
sensitivity adjustment means for, when the sensitivity of the vibration sensor is determined, setting the vibration sensor from the mounting mode to a normal mode by means of the mode setting means and then setting the determined sensitivity of the vibration sensor by means of the sensitivity adjustment means with the aid of an indication unit;
wherein the sensitivity adjustment device comprises a first DIP switch that is adjustable to select a sensitivity range of the vibration sensor and a potentiometer that is adjustable to set a sensitivity of the vibration sensor;
wherein the mode setting device is configured as a second DIP switch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/083135 WO2015032092A1 (en) | 2013-09-09 | 2013-09-09 | Shock sensor and method for adjusting sensitivity thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105518470A CN105518470A (en) | 2016-04-20 |
| CN105518470B true CN105518470B (en) | 2020-08-18 |
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| CN201380079407.1A Active CN105518470B (en) | 2013-09-09 | 2013-09-09 | Vibration sensor and sensitivity adjustment method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN105518470B (en) |
| AU (1) | AU2013400008B2 (en) |
| WO (1) | WO2015032092A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2553131A (en) * | 2016-08-24 | 2018-02-28 | Orisec Ltd | Shock Sensor |
| CN111354143A (en) * | 2018-12-20 | 2020-06-30 | 杭州海康威视数字技术股份有限公司 | Method and device for setting sensitivity of vibration detector |
| GB201915489D0 (en) * | 2019-10-25 | 2019-12-11 | Essence Security International Esi Ltd | Shock detection device,system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4845464A (en) * | 1988-08-09 | 1989-07-04 | Clifford Electronics, Inc. | Programmable sensor apparatus |
| CA1330265C (en) * | 1988-09-23 | 1994-06-21 | Craig W. White | Self-calibrating accelerometer |
| US4980526A (en) * | 1989-04-06 | 1990-12-25 | Hamlin Incorporated | Device and method for testing acceleration shock sensors |
| US7356429B2 (en) * | 2004-07-15 | 2008-04-08 | Honeywell International, Inc. | Method for remotely changing the sensitivity of a wireless sensor |
| DE102005025884A1 (en) * | 2005-06-06 | 2006-12-07 | Robert Bosch Gmbh | Method and device for correcting a signal of a sensor |
| CN101241024B (en) * | 2008-02-29 | 2011-05-04 | 北京联合大学 | Sound triggering early-warning system |
| CN103165313B (en) * | 2011-12-19 | 2015-07-22 | 比亚迪股份有限公司 | Method, system and device of adjusting sensitivity of vibration switch |
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2013
- 2013-09-09 WO PCT/CN2013/083135 patent/WO2015032092A1/en active Application Filing
- 2013-09-09 CN CN201380079407.1A patent/CN105518470B/en active Active
- 2013-09-09 AU AU2013400008A patent/AU2013400008B2/en active Active
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| Publication number | Publication date |
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| AU2013400008B2 (en) | 2018-07-12 |
| AU2013400008A1 (en) | 2016-03-31 |
| WO2015032092A1 (en) | 2015-03-12 |
| CN105518470A (en) | 2016-04-20 |
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