Reversing detection device

A detection device and resistance technology, applied in the direction of measurement device, radio wave measurement system, sound wave re-radiation, etc., can solve the problems of short range, unstable effect, and affecting the driving safety of special vehicles.

Inactive Publication Date: 2021-07-06
张淑婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a reversing detection device, which effectively solves the problem that the reversing radar of special vehicles has a short working distance and unstable effect, which affects the driving safety of special vehicles.

Method used

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  • Reversing detection device
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Embodiment Construction

[0018] For the aforementioned and other technical content, features and effects of the present invention, the following references are made in the appended Figure 1-2 It will be apparent from the detailed description of the embodiments. The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.

[0019] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] A reversing detection device, which is applied to the tail of a special vehicle. The signal receiving circuit includes an amplification filter and a subtractor. The amplification filter uses a resistor R1 to receive an ultrasonic signal detected by an ultrasonic sensor U1, and uses an inductor L1, a capacitor C1, The impedance matching circuit composed of capacitor C2 performs impedance matching on the ultrasonic signal to avoid loss due to impedance mismatch between the ultrasonic senso...

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Abstract

The invention discloses a reversing detection device which effectively solves the problem that driving safety of a special vehicle is affected due to the fact that a reversing radar of the special vehicle is short in operating distance and unstable in effect, and the reversing detection device comprises a signal receiving circuit and a signal processing circuit. The signal receiving circuit enables an ultrasonic signal, detected by the ultrasonic sensor U1, in a blind area of a special vehicle to pass through an amplification filter and a subtractor to obtain a difference signal, the signal receiving circuit transmits the difference signal and the ultrasonic signal to the signal processing circuit, and the signal processing circuit receives the ultrasonic signal and the difference signal through a summator and obtains alarm signals, and the controller is started by the alarm signals, so that the problem that the accuracy of the ultrasonic signal is not high due to the fact that the ultrasonic signal is influenced by severe weather such as rain, snow and fog is avoided.

Description

technical field [0001] The invention relates to the field of special vehicle detection, in particular to a reversing detection device. Background technique [0002] Special vehicles, engineering vehicles, port and wharf operation vehicles and other vehicles undertake tasks that ordinary vehicles cannot undertake. Since they work in special and dangerous environments, their own driving safety is also a very important factor. Due to the large body of this vehicle, in order to avoid the impact of the blind spot on the driver when reversing, an ultrasonic reversing radar is generally set to detect the existence of obstacles, and then assist the driver in reversing. [0003] However, in the working environment of special vehicles, the electromagnetic environment is extremely complex, and in bad weather conditions such as rain, snow, fog, etc., the ultrasonic reversing radar has a short working distance and unstable effect, which affects the driver's ability to recognize when reve...

Claims

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Application Information

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IPC IPC(8): G01S15/931G01S15/08
CPCG01S15/08G01S15/931
Inventor 张淑婷
Owner 张淑婷
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