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US 12,663,520 B2Granted
Object detection apparatus and control method of object detection apparatus
AssigneeDenso Corporation
InventorsNoriyuki Ozaki, Yoshihide Tachino, Takehiro Hata
Life of this patent
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Abstract
An object detection apparatus includes: a light emission part; a light reception part; a time determination part that determines an environmental light acquisition time during which to acquire environmental light in accordance with the intensity of the environmental light; a light reception control part that controls an operation of receiving incident light by the light reception part; and a light emission control part that controls a light emission operation by the light emission part. The light reception control part causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time.
Claims14
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with intensity of the environmental light obtained prior to determining the environmental light acquisition time;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
4 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with a time of day, wherein the time of day is determined based on data received via mobile data communication;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
4 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with weather in an environment of a vehicle, wherein the weather is determined based on data received from the vehicle;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
4 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with map information, wherein the map information is determined based on data stored on a vehicle or received from an external server through telecommunication;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
4 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with vehicle information, wherein the vehicle information is determined based on data received from a vehicle regarding a state of the vehicle;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
4 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that acquires a user instruction to on-board equipment that is indicative of a state of environmental light and determines an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with the acquired user instruction;
- a light reception control part that controls an operation of receiving incident light by the light reception part and causes the light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- a light emission control part that controls a light emission operation by the light emission part.
3 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines a time of light emission for object detection by the light emission part, which is a duration, in accordance with a characteristic of detection reflection light that is incident light on the light reception part in response to the light emission for object detection by the light emission part;
- a light reception control part that controls an operation of receiving the incident light by the light reception part and causes the light reception part to perform a light reception operation by which to acquire environmental light during an environmental light acquisition time, which is a duration, determined by the determined light emission time and an object detection time;
- and
- a light emission control part that controls a light emission operation by the light emission part and causes the light emission part to perform the light emission operation for object detection during the determined light emission time, wherein
- the time determination part increases the light emission time and decreases the environmental light acquisition time if an S/N ratio that is the characteristic of the detection reflection light is lower than a predetermined reference value, and
- the object detection time is constant.
5 more elements
An object detection apparatus comprising:
- a light emission part that emits laser light;
- a light reception part;
- a time determination part that determines a time of light emission for object detection by the light emission part, which is a duration, in accordance with a characteristic of detection reflection light that is incident light on the light reception part in response to the light emission for object detection by the light emission part;
- a light reception control part that controls an operation of receiving the incident light by the light reception part and causes the light reception part to perform a light reception operation by which to acquire environmental light during an environmental light acquisition time, which is a duration, determined by the determined light emission time and an object detection time;
- and
- a light emission control part that controls a light emission operation by the light emission part and causes the light emission part to perform the light emission operation for object detection during the determined light emission time, wherein
- the time determination part decreases the light emission time and increases the environmental light acquisition time if the S/N ratio that is the characteristic of the detection reflection light is higher than the predetermined reference value, and
- the object detection time is constant.
5 more elements
A control method of an object detection apparatus comprising:
- determining an environmental light acquisition time, which is a duration, during which to acquire environmental light in accordance with intensity of the environmental light;
- causing a light reception part to execute a light reception operation by which to acquire the environmental light during the determined environmental light acquisition time;
- and
- causing a light emission part emitting laser light to execute a light emission operation for object detection after a lapse of the environmental light acquisition time,
- wherein an object detection time, which is a sum of the environmental light acquisition time and a light emission time during which the light emission part emits light for object detection, is constant.
2 more elements
A control method of an object detection apparatus comprising:
- determining a time of light emission for object detection by a light emission part emitting laser light, which is a duration, in accordance with a characteristic of detection reflection light that is incident light on a light reception part in response to the light emission for object detection by the light emission part;
- causing the light reception part to perform a light reception operation by which to acquire environmental light during an environmental light acquisition time, which is a duration, determined by the determined light emission time and an object detection time;
- causing the light emission part to perform a light emission operation for object detection during the determined light emission time;
- and
- increasing the light emission time and decreasing the environmental light acquisition time if an S/N ratio that is the characteristic of the detection reflection light is lower than a predetermined reference value,
- wherein the object detection time is constant.
3 more elements
Dependencies are inferred from the claim text.