Operating method for an ultra-sound sensor
View Patent ↗An operating method adapted in an ultra-sound sensor is provided. The method includes the steps of emitting an ultra-sound wave, receiving a crosstalk signal within a crosstalk measuring window, determining whether the crosstalk signal is larger than a crosstalk threshold and triggering a crosstalk application if the crosstalk signal is smaller than the crosstalk threshold.
1. An operating method adapted in an ultra-sound sensor, comprising:
emitting an ultra-sound wave by a first ultra-sound sensor;
receiving a crosstalk signal within a crosstalk measuring window;
determining whether the crosstalk signal is larger than a crosstalk threshold;
triggering a crosstalk application if the crosstalk signal is smaller than the crosstalk threshold; and
determining that an obstacle shields or is close to the first ultra-sound sensor if the crosstalk signal received within the crosstalk measuring window is smaller than the crosstalk threshold.
2. The method according to claim 1 , further comprising: triggering a normal application if the crosstalk signal is larger than the crosstalk threshold.
3. The method according to claim 1 , wherein the crosstalk measuring window is overlapped with an ultra-sound emission period.
4. The method according to claim 1 , wherein the step of receiving the crosstalk signal comprises: receiving the crosstalk signal or a reflected ultra-sound wave by a second ultra-sound sensor.
5. The method according to claim 4 , further comprising: determining the obstacle shields or gets close to the second ultra-sound sensor if the crosstalk signal received within the crosstalk measuring window is smaller than the crosstalk threshold.
6. An operating method adapted in an ultra-sound sensor, the method comprises:
emitting an ultra-sound wave;
receiving a crosstalk signal; and
shielding a crosstalk signal path to trigger a crosstalk application, including
determining whether the crosstalk signal received within a crosstalk measuring window is larger than a crosstalk threshold, and
determining that the crosstalk signal path is shielded if the crosstalk signal is smaller than the crosstalk threshold.
7. The method according to claim 6 , further comprising: triggering a normal application by not shielding the crosstalk signal path.
8. The method according to claim 6 , wherein the crosstalk measuring window is overlapped with an ultra-sound emission period.
9. The method according to claim 6 , wherein the step of emitting the ultra-sound wave comprises: emitting the ultra-sound wave by a first ultra-sound sensor.
10. The method according to claim 9 , wherein the step of receiving the crosstalk signal comprises: receiving the crosstalk signal or a reflected ultra-sound wave by a second ultra-sound sensor.
11. The method according to claim 9 , wherein the step of shielding the crosstalk signal path further comprises: shielding or getting close to the first ultra-sound sensor by an obstacle.
12. The method according to claim 10 , wherein the step of shielding the crosstalk signal path further comprises: shielding or getting close to the second ultra-sound sensor by an obstacle.