Method for detecting an obstacle in the detection area of a detection device
An obstacle and receiving device technology, applied in the field of detecting an obstacle, can solve problems such as errors, and achieve the effect of reliable judgment
Inactive Publication Date: 2006-11-22
VALEO SCHALTER & SENSOREN
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[0004] However, even after this threshold instant, the received signal may at least partly consist of interfering signals which are mistakenly regarded as part of the transmitted signal being reflected back on obstacles, then said interfering signals lead to a false assumption about the presence of obstacles in the detection area of the detection device
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[0015] exist figure 1 The monitoring device 100 for monitoring a space shown in includes at least one transmitting device 110-1 for sending a transmitting signal and at least one first receiving device 110-2 for receiving a first receiving signal and a user The second receiving device 110-4 for receiving a second received signal. It is important for the structure of the monitoring device 100 according to the invention that the second receiving device 110 - 4 is arranged farther from the transmitting device 110 - 1 than the first receiving device 110 - 2 . The reason for the different distances is that the first receiving device 110 - 2 is configured to detect the foreign object 200 , while the second receiving device 110 - 4 is configured to detect interference signal components. Continue below for further reasons.
[0016] Monitoring device 100 also includes a first evaluation device 120 for evaluating at least a first received signal with respect to the presence of foreign...
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The invention relates to a method and a device for further monitoring a space for the presence of foreign objects. The monitoring device usually includes at least one transmitting device and a first and a second receiving device. In the conventional analysis of the received signal received by the receiving device in the prior art, only a conditional judgment can be made as to whether the received signal may contain information that would be misleading regarding the presence of foreign objects. In order to improve the reliability of this determination, it is proposed according to the invention that the signal of a second receiving device, which is arranged further from the transmitting device than the first receiving device, is analyzed with respect to the interference signal contribution. If the distance between the first and second receiving devices is not too great, it can be assumed that the interference signal component detected in the second receiving signal is also contained in the first receiving signal. In this case it is recommended that the monitoring of this space should be corrected or at least the monitoring results obtained should be abandoned until such time as no more interfering signal components are detected when the second received signal is repeatedly analyzed.
Description
technical field [0001] The invention relates to a method for detecting an obstacle in the detection range of a detection device. Furthermore, the invention relates to the detection device described and a computer program for carrying out the method. Finally, the invention also relates to a data carrier having said computer program. Background technique [0002] Detection devices of this type are known in principle from the prior art. Typically, they are installed in the bumper of a motor vehicle and are thus used as a parking aid by detecting obstacles in the immediate vicinity of the motor vehicle. Such known devices typically operate on the ultrasonic principle and comprise at least one transmitting device and at least one first and second receiving device, wherein the second receiving device is located farther from the transmitting device than the first receiving device. In order to detect an obstacle in the detection range of the detection device, its transmitter devi...
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IPC IPC(8): G01S15/931G01S7/537
CPCG01S7/537G01S15/931Y10S367/909
Inventor 马库斯·亨贝格尔海因里希·格茨格
Owner VALEO SCHALTER & SENSOREN