阅读说明：本技术 一种电务车载车下走行部设备图像检测系统 (Image detection system for running gear equipment under electric vehicle loading vehicle ) 是由 王洪 赵连祥 肖志鑫 万军 秦昌 李铁龙 于 2019-09-23 设计创作，主要内容包括：一种电务车载车下走行部设备图像检测系统,涉及一种电务车图像检测技术,为了解决采用人工检测的方式对车下走行部的电务设备进行检测时,检测效率低以及可靠性差的问题。本发明的第一拍摄相机获取电子标签图像；第二拍摄相机获取机感吊架图像；第三拍摄相机获取车速度传感器图像；第四拍摄相机获取车号图像；车轮传感器获取电务车的车速信息并以传感信号的形式输出,保证电务车优先经过车轮传感器；DSP控制板与车轮传感器相连,DSP控制板与差分信号处理器相连；差分信号处理器分别与第一拍摄相机、第二拍摄相机、第三拍摄相机以及第四拍摄相机相连；以上四类摄相机拍摄的图像分别通过计算机存储于存储服务器中。有益效果为检测效率高,可靠性强。(An image detection system for equipment of an under-vehicle running part of an electric vehicle carrier relates to an image detection technology for the electric vehicle, and aims to solve the problems of low detection efficiency and poor reliability when the electric equipment of the under-vehicle running part is detected in a manual detection mode. The method comprises the steps that a first shooting camera acquires an electronic tag image; a second shooting camera acquires an image of the machine sensing hanger; the third shooting camera acquires an image of the vehicle speed sensor; the fourth shooting camera acquires a car number image; the wheel sensor acquires the speed information of the electric vehicle and outputs the speed information in a sensing signal mode, so that the electric vehicle is ensured to pass through the wheel sensor preferentially; the DSP control panel is connected with the wheel sensor and the differential signal processor; the differential signal processor is respectively connected with the first shooting camera, the second shooting camera, the third shooting camera and the fourth shooting camera; images shot by the four types of cameras are stored in a storage server through a computer respectively. The method has the advantages of high detection efficiency and high reliability.)

1. An image detection system of running gear equipment under electric vehicle loading is characterized by comprising a DSP control panel (1), a differential signal processor (2), a first shooting camera (3), a second shooting camera (4), a third shooting camera (5), a fourth shooting camera (6), a storage server (7) and a wheel sensor (8);

the first shooting camera (3) is used for acquiring an electronic tag image of the electric service car;

the second shooting camera (4) is used for acquiring an image of the mechanical sense hanger at the bottom of the electric service vehicle;

the third shooting camera (5) is used for acquiring a vehicle speed sensor image of the wheel shaft part of the electric vehicle;

the fourth shooting camera (6) is used for acquiring a car number image of the electric service car;

the wheel sensor (8) is arranged on the side wall of the steel rail (15) to acquire the speed information of the electric vehicle and output the speed information in the form of a sensing signal, and meanwhile, the electric vehicle is ensured to pass through the wheel sensor (8) preferentially;

the sensing signal input end of the DSP control board (1) is connected with the sensing signal output end of the wheel sensor (8), and the pulse signal output end of the DSP control board (1) is connected with the pulse signal input end of the differential signal processor (2); the differential signal output end of the differential signal processor (2) is respectively connected with the differential signal input end of the first shooting camera (3), the differential signal input end of the second shooting camera (4), the differential signal input end of the third shooting camera (5) and the differential signal input end of the fourth shooting camera (6); images shot by the first shooting camera (3), the second shooting camera (4), the third shooting camera (5) and the fourth shooting camera (6) are stored in a storage server (7) through a computer respectively.

2. The image detection system for the running gear equipment under the electric vehicle carrier as recited in claim 1, characterized in that the image detection system further comprises a first shooting box (10), a second shooting box (11), a third shooting box (12) and a fourth shooting box (9);

the first shooting box (10) is a bottom box, the first shooting box (10) is buried in the central axis of the two steel rails (15), and meanwhile the first shooting box (10) is located between the two adjacent sleeper rails (14); the first shooting camera (3) is arranged in the first shooting box (10), and the lens of the first shooting camera (3) is vertically upward;

the second shooting boxes (11) are bottom boxes, and two sides of the steel rail (15) are symmetrically embedded in the four second shooting boxes (11) in a two-by-two matrix mode; the four second shooting cameras (4) are respectively arranged in the four second shooting boxes (11), and the focal points of the lenses of the four second shooting cameras (4) are focused right above the steel rail (15);

the third shooting boxes (12) are side boxes, and the two third shooting boxes (12) are respectively arranged at the left side and the right side of the two steel rails (15); the two third cameras (5) are respectively arranged in the two third photographing boxes (12), and the lenses of the two third cameras (5) are horizontal and opposite;

the fourth shooting boxes (9) are side boxes, and the fourth shooting boxes (9) are respectively arranged at the left side and the right side of the two steel rails (15); the fourth shooting camera (6) is arranged in the fourth shooting box (9), and the lenses of the two fourth shooting cameras (6) are horizontal and opposite.

3. An electric vehicle underslung device image detection system according to claim 2, characterized in that the image detection system further comprises a stepper motor driver (17);

the stepping motor driver (17) is used for respectively driving the doors of the first shooting box (10), the second shooting box (11), the third shooting box (12) and the fourth shooting box (9) to be opened according to the driving signals;

the driving signal output end of the DSP control board (1) is connected with the driving signal input end of the stepping motor driver (17).

4. The image detection system for the running gear of the electric vehicle carrying vehicle according to claim 1, further comprising a branch box (13);

the DSP control board (1), the differential signal processor (2), the computer and the storage server (7) are installed in a cabinet together, and the cabinet is arranged in a rail side machine room (16);

the differential signal input end of the first shooting camera (3), the differential signal input end of the second shooting camera (4), the differential signal input end of the third shooting camera (5) and the differential signal input end of the fourth shooting camera (6) are respectively connected with the differential signal output end of a differential signal processor (2) in a rail side machine room (16) through a junction box (13);

images shot by the first shooting camera (3), the second shooting camera (4), the third shooting camera (5) and the fourth shooting camera (6) are stored in the storage server (7) by a computer in the rail side machine room (16) after passing through the branch box (13).

5. The image detection system for the running gear equipment under the electric vehicle carrier according to claim 1, wherein the differential signal processor (2) comprises a signal processing circuit, a signal amplifying circuit and a signal converting circuit;

pulse signals output by the DSP control panel (1) are filtered and isolated by the signal processing circuit, then are amplified by the signal amplifying circuit, and finally are converted into differential signals by the signal conversion circuit.

6. The image detection system for the running gear device under the electric vehicle carrier as claimed in claim 5,

the signal processing circuit comprises a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a photoelectric coupler U1, a power supply VCC and a transformer T1;

the photoelectric coupler U1 is silicon controlled output type;

the positive terminal of the pulse signal is respectively connected with one end of a resistor R1, one end of a capacitor C2, one end of a resistor R2 and one end of a primary coil of a transformer T1; the other end of the resistor R1 is connected with one end of the capacitor C1;

the grounding end of the pulse signal is respectively connected with the other end of the capacitor C1, the other end of the capacitor C2, the other end of the resistor R2 and one end of the secondary coil of the transformer T1;

the other end of the primary coil of the transformer T1 is connected with one end of a capacitor C3 and one end of a resistor R3 at the same time; the other end of the resistor R3 is connected with the anode of a light-emitting diode in the photoelectric coupler U1;

the other end of the secondary coil of the transformer T1 is connected with the other end of the capacitor C3 and the cathode of the light emitting diode in the photoelectric coupler U1;

a silicon controlled rectifier control electrode in the photoelectric coupler U1 is connected with a power supply VCC and one end of a capacitor C4 at the same time; the other end of the capacitor C4 is grounded;

the anode of the controllable silicon in the photoelectric coupler U1 is used as the output end of the signal processing circuit;

the cathode of the thyristor in the photocoupler U1 is grounded.

7. The image detection system for the running gear device under the electric vehicle carrier as claimed in claim 6,

the signal amplification circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C5 and an amplifier U2;

the output end of the signal processing circuit is connected with one end of the resistor R5 and one end of the resistor R7;

the other end of the resistor R7 is connected with one end of the resistor R4 and one end of the resistor R8 at the same time, and the other end of the resistor R4 is connected with a power supply VCC;

the other end of the resistor R8 is connected with one end of the resistor R9 and is used as an input end of a homodromous signal of the amplifier U2; the other end of the resistor R9 is grounded;

the other end of the resistor R5 is connected with one end of the resistor R6 and is used as an input end of an inverting signal of the amplifier U2;

the other end of the resistor R6 is connected with the output end of the amplifier U2 and is used as the output end of the signal amplification circuit;

the positive power supply end of the amplifier U2 is connected with a power supply VCC;

the negative power supply end of the amplifier U2 is connected with one end of the capacitor C5 and is grounded; the other terminal of the capacitor C5 is connected to a power supply VCC.

8. The image detection system for the running gear device under the electric vehicle carrier as claimed in claim 7,

the signal conversion circuit comprises a conversion chip U3, a resistor R10, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9;

the model of the conversion chip U3 is LCMXO 2280C;

the No. 144 pin of the conversion chip U3 is connected with the output end of the signal amplification circuit;

the No. 102 pin of the conversion chip U3 is connected with one end of a resistor R10;

the No. 105 pin of the conversion chip U3 is connected with the other end of the resistor R10;

the No. 98 pin of the conversion chip U3 is simultaneously connected with the No. 82 pin, one end of the capacitor C6, one end of the capacitor C7, one end of the capacitor C8, one end of the capacitor C9, the No. 117 pin, the No. 135 pin and a power supply VCC; the other end of the capacitor C6, the other end of the capacitor C7, the other end of the capacitor C8 and the other end of the capacitor C9 are grounded at the same time;

the pin 119 of the conversion chip U3 is used as a first differential signal output end of the differential signal processor (2) and is connected with a differential signal input end of the first shooting camera (3);

a pin 115 of the conversion chip U3 is used as a second differential signal output end of the differential signal processor (2) and is connected with a differential signal input end of a second shooting camera (4);

a pin 113 of the conversion chip U3 is used as a third differential signal output end of the differential signal processor (2) and is connected with a differential signal input end of a third camera (5);

and the pin No. 111 of the conversion chip U3 is used as a fourth differential signal output end of the differential signal processor (2) and is connected with a differential signal input end of a fourth shooting camera (6).

Technical Field

The invention relates to an image detection technology for an electric service vehicle.

Background

At present, the detection work of the electric equipment arranged on the under-vehicle running part is still finished in a workshop working area by detection personnel, the detection means completely depend on the detection personnel to photograph the part by using a video flashlight to form video data or the detection personnel directly judge whether the part is normal or not by visual inspection, and the detection methods and means are both classified as manual detection.

Problems with manual detection:

1. the visual mode under the manual vehicle is adopted completely to detect, the labor intensity of personnel is high, the personal safety hidden danger is easily caused, the detection operation quality is difficult to guarantee, and the detection efficiency is low.

2. The manual detection operation process relies on the manual hand-held camera flashlight to shoot, and this mode is shot image quality poor, and the uniformity is not high, in case quality problems traces back the difficulty, detects the reliability poor.

Disclosure of Invention

The invention aims to solve the problems of low detection efficiency and poor reliability when the electric service equipment of an under-vehicle running gear is detected in a manual detection mode, and provides an image detection system for the under-vehicle running gear equipment of an electric service vehicle.

The image detection system of the running gear equipment under the electric vehicle carrier comprises a DSP control panel, a differential signal processor, a first shooting camera, a second shooting camera, a third shooting camera, a fourth shooting camera, a storage server and a wheel sensor;

the first shooting camera is used for acquiring an electronic tag image of the electric service car;

the second shooting camera is used for acquiring an image of the mechanical sense hanger at the bottom of the electric service vehicle;

the third camera is used for acquiring a vehicle speed sensor image of the wheel shaft part of the electric vehicle;

the fourth shooting camera is used for acquiring a car number image of the electric service car;

the wheel sensors are arranged on the side walls of the steel rails to acquire the speed information of the electric vehicle and output the speed information in the form of sensing signals, and meanwhile, the electric vehicle is ensured to pass through the wheel sensors preferentially;

the sensing signal input end of the DSP control board is connected with the sensing signal output end of the wheel sensor, and the pulse signal output end of the DSP control board is connected with the pulse signal input end of the differential signal processor; the differential signal output end of the differential signal processor is respectively connected with the differential signal input end of the first shooting camera, the differential signal input end of the second shooting camera, the differential signal input end of the third shooting camera and the differential signal input end of the fourth shooting camera; images shot by the first shooting camera, the second shooting camera, the third shooting camera and the fourth shooting camera are respectively stored in the storage server through a computer.

The invention utilizes a wheel sensor to obtain the speed information of an electric service vehicle, and sends the speed information of the electric service vehicle to a DSP control panel in the form of a sensing signal, the DSP control panel converts the sensing signal into a pulse signal and sends the pulse signal to a differential signal processor, the differential signal processor converts the pulse signal into a differential signal and respectively controls a first shooting camera to shoot an electronic tag image, a second shooting camera to shoot a sensing hanger image, a third shooting camera to shoot a vehicle speed sensor image and a fourth shooting camera to shoot a vehicle number image, then all the images are stored in a storage server through a computer, and finally, an abnormal vehicle can be determined according to the vehicle number image by calling and checking the images in the storage server, so that the detection operation is completed.

The image detection system has the advantages that when the electric vehicle passes through, the image detection system automatically acquires the appearance image and the 3D information of the running part equipment under the electric vehicle loading vehicle, manual vehicle-mounted operation is not needed, and personal safety hazards are effectively eliminated; adopt machine detection to replace artifical car and visualize down, reduce measurement personnel intensity of labour by a wide margin, better assurance operation quality can improve detection efficiency simultaneously to be convenient for trace back, the reliability of detection is good.

Drawings

Fig. 1 is a schematic structural block diagram of an image detection system of a running gear device under an electric vehicle carrier according to a first embodiment;

FIG. 2 is a schematic view showing the arrangement position of the photographing box in the second embodiment;

FIG. 3 is a block diagram of the control of the shooting box in the third embodiment;

FIG. 4 is a circuit diagram of a signal processing circuit according to a fifth embodiment;

FIG. 5 is a circuit diagram of a signal amplifying circuit according to a fifth embodiment;

fig. 6 is a circuit diagram of a signal conversion circuit in the fifth embodiment.

Detailed Description