CN114413782A - Vehicle type recognition system of photoelectric sensor combined production line - Google Patents
Vehicle type recognition system of photoelectric sensor combined production line Download PDFInfo
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- CN114413782A CN114413782A CN202111487355.4A CN202111487355A CN114413782A CN 114413782 A CN114413782 A CN 114413782A CN 202111487355 A CN202111487355 A CN 202111487355A CN 114413782 A CN114413782 A CN 114413782A
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- programmable controller
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The invention discloses a vehicle type recognition system of a photoelectric sensor combined production line, which comprises: the detection frame is provided with a vehicle inlet and a vehicle outlet, the bottom of the detection frame is fixedly connected with a conveying table, the conveying table is fixedly connected with the bottom of the detection frame, and the conveying table is provided with a plurality of detection frames of vehicles to be detected in a moving mode in the length direction; and a photoelectric switch for detecting the profile of the side face of the vehicle body, a laser ranging sensor for detecting the distance from the profile of the vehicle body to a specific point and a programmable controller for determining the vehicle type are fixedly connected in the detection frame. The automatic vehicle type identification device is composed of a photoelectric switch, a laser ranging sensor and a programmable controller, can accurately identify all vehicle types on a production line, is low in cost and convenient to maintain, and is suitable for efficiently and accurately identifying various vehicle types on an automobile production line using the programmable controller.
Description
Technical Field
The invention relates to an identification system, in particular to a vehicle type identification system of a photoelectric sensor combined production line.
Background
On an automobile automatic production line, extremely high requirements are placed on the accuracy rate of vehicle type identification. When vehicle type recognition is wrong, the situation that a vehicle body collides with a moving mechanism can occur, and great economic loss is caused. And the identification system is also convenient to maintain, so that the resource waste caused by the line stop of the production line is avoided.
At present, on a multi-vehicle type mixed production line, a common identification method comprises the following steps: the photoelectric switch combination is matched with a programmable controller; and secondly, the form of vehicle type data output by the cooperation of multiple cameras and special identification software.
The first method is convenient to maintain and simple in structure, is a form for identifying vehicle types on a plurality of production lines, but is difficult to apply on a flexible production line of a plurality of vehicle types, increases the number of required photoelectric switches due to the increase of the vehicle types, and is difficult to detect the width direction of a vehicle body.
The second method has high accuracy, does not need to add hardware when a new vehicle type is added, but needs independent running software, needs professional personnel for software maintenance, has higher equipment cost and needs a plurality of groups of cameras for combined measurement.
Disclosure of Invention
The invention aims to provide a vehicle type recognition system of a photoelectric sensor combined production line, which can effectively solve the technical problems.
In order to achieve the purpose of the invention, the following technical scheme is adopted: a photoelectric sensor combined type production line vehicle type recognition system comprises: the detection frame is provided with a vehicle inlet and a vehicle outlet, the bottom of the detection frame is fixedly connected with a conveying table, the conveying table is fixedly connected with the bottom of the detection frame, and the conveying table is provided with a plurality of detection frames of vehicles to be detected in a moving mode in the length direction; and a photoelectric switch for detecting the profile of the side face of the vehicle body, a laser ranging sensor for detecting the distance from the profile of the vehicle body to a specific point and a programmable controller for determining the vehicle type are fixedly connected in the detection frame.
Preferably, the photoelectric switches are two photoelectric switches, wherein one photoelectric switch is fixed at the vehicle inlet, and the other photoelectric switch is fixed on the left side wall of the vehicle body in the advancing direction.
Preferably, the photoelectric switch is a diffuse reflection photoelectric switch or a correlation photoelectric switch.
Preferably, two laser ranging sensors are specifically adopted, wherein one laser ranging sensor is fixed at the top of the detection frame, and the other laser ranging sensor is fixed on the left side wall of the advancing direction of the vehicle body.
It is preferred. The photoelectric switch sends a digital quantity signal to the programmable controller, the laser ranging sensor sends an analog quantity signal to the programmable controller, and finally the programmable controller sends a new digital quantity and an analog signal to the mechanical operation mechanism.
Compared with the prior art, the invention has the following beneficial effects:
the automatic vehicle type identification device is composed of a photoelectric switch, a laser ranging sensor and a programmable controller, can accurately identify all vehicle types on a production line, is low in cost and convenient to maintain, and is suitable for efficiently and accurately identifying various vehicle types on an automobile production line using the programmable controller.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
FIG. 1 is a schematic diagram of the operation of a vehicle type recognition system of a combined production line of photoelectric sensors in the embodiment of the invention;
FIG. 2 is a hardware layout diagram of a vehicle type recognition system of a combined production line of photoelectric sensors in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a vehicle type A detected by the combined production line vehicle type recognition system of the photoelectric sensor in the embodiment of the invention;
fig. 4 is a schematic diagram of a vehicle type B detection system of a combined production line of photoelectric sensors in the embodiment of the invention.
Description of the figures
1. The device comprises a detection frame 2, a conveying table 3, a detection frame 4, a photoelectric switch 5 and a laser ranging sensor.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, a vehicle type recognition system for a combined production line of photoelectric sensors includes: detecting frame 1, detecting frame 1 is equipped with one and advances the car mouth and one goes out the car mouth, and detecting frame 1 bottom fixedly connected with carries platform 2, carries platform 2 and detecting frame 1 bottom fixed connection, carries 2 length direction of platform to remove and is equipped with a plurality of detection framves 3 of waiting to examine the car, and detection framves 3 drive and wait to examine the car and want to detect 1 internal motion of frame.
The photoelectric switch 4 for detecting the profile of the side face of the vehicle body is fixedly connected in the detection frame 1, the photoelectric switch 4 specifically adopts two photoelectric switches 4, one of the photoelectric switches 4 is fixed at the vehicle entrance, and the other photoelectric switch 4 is fixed on the left side wall of the vehicle body in the advancing direction.
The photoelectric switch 4 specifically adopts a diffuse reflection photoelectric switch 4 or a correlation photoelectric switch 4, and the position information detected by the photoelectric switch 4 is converted into a digital quantity signal.
The photoelectric switch 4 is connected with the circuit by a synchronous circuit by utilizing the shielding or reflection of the detected object to the light beam, the photoelectric switch 4 converts the input current into a light signal to be emitted, and then the target object is detected according to the intensity or the existence of the received light.
A laser ranging sensor 5 for detecting the distance from the outline of the vehicle body to a specific point and a programmable controller for determining the vehicle type are fixedly connected in the detection frame 1.
Wherein, laser rangefinder sensor 5 specifically adopts two laser rangefinder sensors 5, and one of them laser rangefinder sensor 5 is fixed in the top of detecting frame 1, and another is fixed in the automobile body left side wall of direction that advances.
The laser ranging sensor 5 on the left side wall of the vehicle body in the advancing direction sends out signals and focuses the signals to the vehicle body to be detected, reflected light is collected by the laser ranging sensor 5 fixed on the top of the detection frame 1, and the laser ranging sensor 5 on the top of the detection frame 1 calculates the position of a light spot on the array through a trigonometric function to obtain the distance from the vehicle body.
The programmable sensor sends the processed digital quantity and analog signal to the mechanical operation mechanism, and the mechanical operation mechanism starts to work.
The working room, the automobile body enters into detecting frame 1, and programmable controller gathers this photoelectric switch 4's digital quantity signal and laser ranging sensor 5's analog signal simultaneously, uses the instantaneous data of gathering and the data that the different motorcycle types that store in programmable controller before correspond to carry out the comparison, reachs the motorcycle type number that passes through the automobile body at present.
In the photoelectric sensor combined type production line vehicle type recognition system, at the moment of entering the same recognition position, the instantaneous data of the photoelectric switch 4 and the laser range finder collected by the programmable controller are shown in table 1, vehicle type data pre-stored in the programmable controller are compared, and the corresponding vehicle type number currently passing through a vehicle body is obtained if the conditions are met as shown in table 2. According to the dynamic measuring environment of the production line, the allowable data upper and lower limit values are added into the vehicle type data pre-stored in the programmable controller, as shown in table 2, and the identification accuracy is improved.
TABLE 1 instantaneous data sheet for model A and B
TABLE 2 vehicle type A and B programmable controller pre-stored vehicle type data sheet
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (5)
1. The utility model provides a photoelectric sensor combination formula production line motorcycle type identification system which characterized in that includes: the detection frame is provided with a vehicle inlet and a vehicle outlet, the bottom of the detection frame is fixedly connected with a conveying table, the conveying table is fixedly connected with the bottom of the detection frame, and the conveying table is provided with a plurality of detection frames of vehicles to be detected in a moving mode in the length direction; and a photoelectric switch for detecting the profile of the side face of the vehicle body, a laser ranging sensor for detecting the distance from the profile of the vehicle body to a specific point and a programmable controller for determining the vehicle type are fixedly connected in the detection frame.
2. The system for recognizing vehicle types on a production line combining photoelectric sensors as claimed in claim 1, wherein the photoelectric switches are two photoelectric switches, one of which is fixed to a vehicle entrance and the other of which is fixed to a left side wall of a vehicle body in a forward direction.
3. The combined type production line vehicle type identification system of the photoelectric sensor as claimed in claim 2, wherein the photoelectric switch is a diffuse reflection photoelectric switch or a correlation photoelectric switch.
4. The vehicle type recognition system of claim 1, wherein two laser distance measuring sensors are used, one of the two laser distance measuring sensors is fixed on the top of the detection frame, and the other one is fixed on the left side wall of the vehicle body in the advancing direction.
5. The system of claim 1, wherein the photoelectric switch sends a digital signal to the programmable controller, the laser distance measuring sensor sends an analog signal to the programmable controller, and finally the programmable controller sends a new digital signal and the new analog signal to the mechanical operation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111487355.4A CN114413782A (en) | 2021-12-07 | 2021-12-07 | Vehicle type recognition system of photoelectric sensor combined production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111487355.4A CN114413782A (en) | 2021-12-07 | 2021-12-07 | Vehicle type recognition system of photoelectric sensor combined production line |
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| CN114413782A true CN114413782A (en) | 2022-04-29 |
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- 2021-12-07 CN CN202111487355.4A patent/CN114413782A/en active Pending
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