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Distance measuring device

A distance measuring device and distance technology, which is applied in the field of distance measuring devices and can solve problems such as the reduction of measurement accuracy

Pending Publication Date: 2021-02-12
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, as a result of research by the inventors of the present invention, it was found that when the distance measuring device has accessory parts such as a heater and an ultrasonic vibrator, a decrease in measurement accuracy occurs, which is a new problem.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0023] [1-1. Structure]

[0024] figure 1 The illustrated laser radar device 100 is a distance measuring device that measures a distance to an object by irradiating light as a transmission wave and detecting a reflected wave of the irradiated light. Lidar is also documented as LIDAR. LIDAR is the abbreviation of Light Detection and Ranging. The laser radar device 100 is used mounted on a vehicle to detect various objects existing in front of the vehicle.

[0025] The laser radar device 100 includes a measuring device 10 , an attachment 20 , and a control unit 30 .

[0026] The measuring device 10 has an irradiation unit 11 that intermittently emits light, and a detection unit 12 that detects reflected waves of the light. The irradiation unit 11 irradiates laser light as light. The detection unit 12 receives reflected waves from an object and converts them into electrical signals.

[0027] Measuring device 10 is housed in figure 2 The interior of housing 40 with cover 5...

no. 2 approach

[0052] [2-1. Differences from the First Embodiment]

[0053] Since the basic configuration of the second embodiment is the same as that of the first embodiment, the description of the common configuration will be omitted, and the description will focus on the differences.

[0054] In the first embodiment described above, the period during which the control unit 30 does not start and stop the energization to the attachment 20 is during the measurement of each measurement point. On the other hand, in the second embodiment, as Image 6 As shown, the control unit 30 does not start and stop energization to the attachment 20 during a series of measurements on a plurality of measurement points existing in the measurement range. In addition, the state in which the control unit 30 performs a series of measurements using the measuring device 10 is called a burst.

[0055] [2-2. Processing]

[0056] use Figure 7 The flow chart of FIG. 2 describes the restriction processing of the se...

no. 3 approach

[0061] [3-1. Differences from the First Embodiment]

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PUM

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Abstract

A distance measuring device (100) is provided with a measuring instrument (10), a control unit (30), and an associated component (20). The measuring instrument includes a radiating unit (11) which radiates a transmitted wave, and a detecting unit (12) which detects a reflected wave originating from the transmitted wave. The control unit uses the measuring instrument to measure the distance to an object irradiated by the transmitted wave. The associated component is associated with the measuring instrument, and operates by being energized. The control unit controls energization of the associated component in accordance with a measured state of the distance obtained using the measuring instrument.

Description

[0001] Cross References to Related Applications [0002] This international application claims priority based on Japanese Patent Application No. 2018-126093 filed with the Japan Patent Office on July 2, 2018, and the entire contents of Japanese Patent Application No. 2018-126093 are incorporated by reference in this international application. technical field [0003] The present disclosure relates to a distance measuring device for measuring a distance to an object. Background technique [0004] As a distance measuring device that is mounted on a vehicle and measures the distance to an object in front of the vehicle, there is a device that irradiates a transmission wave forward and detects a reflected wave from an object of the irradiated transmission wave to detect the distance to the object. distance device. [0005] In the distance measuring device, in order to protect an irradiation unit that irradiates a transmission wave and a detection unit that detects a reflected w...

Claims

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Application Information

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IPC IPC(8): G01S7/481G01S7/497G01S17/931
CPCG01S13/931G01S7/497B60S1/56G01S7/4039G01S7/4043G01S7/4047G01S17/931G01S7/4813G01S2007/4977B60S1/023G01S7/4811G01S17/08
Inventor 山本真裕木绵次朗
Owner DENSO CORP