Energy storage type electric vehicle charging system based on laser ranging sensor

Abstract

The utility model discloses an energy storage type electric car charging system based on a laser distance measuring sensor, belongs to the technical field of electric car charging, and solves the technical problem that the normal charging operation of a train is affected as the conventional radio frequency detection system is easily interfered by signals. The device comprises a charging control module, an entrance laser distance measuring sensor and an exit laser distance measuring sensor, the entrance laser distance measuring sensor and the exit laser distance measuring sensor are installed on the top wall of a tunnel through a base and right above a ground rail, and the collection faces of the entrance laser distance measuring sensor and the exit laser distance measuring sensor face downwards. The distance between the entrance laser distance measuring sensor and the exit laser distance measuring sensor is smaller than the length of the train, and when the train is located at the charging position, the entrance laser distance measuring sensor and the exit laser distance measuring sensor are in communication connection with the charging control module. The system is strong in anti-interference performance, very short in detection time, relatively sensitive in detection, and good in guarantee of normal charging operation of the train.

Description

Technical Field

[0001] The utility model relates to the technical field of tram charging, and more specifically, to an energy storage type tram charging system based on a laser ranging sensor. Background Art

[0002] Accurately obtaining the train arrival information (i.e., obtaining the train positioning and the voltage of the on-vehicle energy storage device) is an important basic task in the process of dynamically charging the train. Currently, the RFID radio frequency identification technology is used to obtain the train arrival information, and then the train arrival information is sent to the charging control module, and the charging control module charges the train. The RFID radio frequency identification technology is a non-contact automatic identification technology. When the signal propagates in a closed space, such as a culvert, a tunnel, an underground platform, a ground corridor and other closed space areas, due to the interference of the platform environment on the signal, the beacon signal is reflected and received multiple times, resulting in the inaccurate and unstable beacon radio frequency signal received by the reader, and the inbound and outbound signals are disordered, so that the state of the train entering and leaving the station cannot be accurately judged. Through technical means such as fault statistical analysis, principle analysis and on-site test, the disadvantages of the radio frequency detection system in the application of closed space are clarified. Almost every time the train enters the station, it is probably affected by signal interference, which seriously affects the normal charging operation of the train. Therefore, it is of great application value and very necessary to find an alternative solution for accurately obtaining the train arrival information. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies of the prior art. The purpose of the utility model is to provide an energy storage type tram charging system based on a laser ranging sensor, which has strong anti-interference ability, extremely short detection response time, high detection sensitivity, very low operation cost and high efficiency, and has good guarantee for the normal charging operation of the train.

[0004] The technical solution of the present utility model is: an energy storage tram charging system based on a laser ranging sensor, including a charging control module, and further including an in-station laser ranging sensor and an out-station laser ranging sensor. The in-station laser ranging sensor and the out-station laser ranging sensor are respectively installed on the top wall of the tunnel through a base and are located directly above the ground rail. The acquisition surfaces of the in-station laser ranging sensor and the out-station laser ranging sensor face downward. The distance between the in-station laser ranging sensor and the out-station laser ranging sensor is less than the length of the train. When the train is in the charging position, the horizontal distance between the in-station laser ranging sensor and the tail of the train is 0.9 - 1.1 m, and the horizontal distance between the out-station laser ranging sensor and the head of the train is 0.9 - 1.1 m. The in-station laser ranging sensor and the out-station laser ranging sensor are respectively communicatively connected to the charging control module through leads, and the leads are connected to the in-station laser ranging sensor and the out-station laser ranging sensor through waterproof connectors. A circular hole is provided in the middle of the base, and arc-shaped holes are respectively provided on both sides of the circular hole. The centers of the arc-shaped holes on both sides coincide with the center of the circular hole. The in-station laser ranging sensor and the out-station laser ranging sensor are both installed in the circular hole and the two arc-shaped holes of the base through three bolts.

[0005] As a further improvement, the specifications of both the in-station laser ranging sensor and the out-station laser ranging sensor are: detection range 5 m, frequency 100 HZ, and powered by DC 24 V voltage.

[0006] Further, the vertical distance between both the in-station laser ranging sensor and the out-station laser ranging sensor and the platform ground is 4.5 m.

[0007] Further, the in-station laser ranging sensor and the out-station laser ranging sensor are installed at the central axis position of the charging rail.

[0008] Further, the number of the in-station laser ranging sensors is 2, and the 2 in-station laser ranging sensors are arranged in parallel. The 2 in-station laser ranging sensors are respectively communicatively connected to the charging control module through optocouplers.

[0009] Further, the number of the out-station laser ranging sensors is 2, and the 2 out-station laser ranging sensors are arranged in parallel. The 2 out-station laser ranging sensors are respectively communicatively connected to the charging control module through optocouplers.

[0010] Further, the 2 in-station laser ranging sensors and the 2 out-station laser ranging sensors are installed at the central axis position of the charging rail.

[0011] Furthermore, a support sheet metal is provided on the top wall of the tunnel. A chute is provided in the middle of the support sheet metal. A slider is provided on the top of the base. The slider is slidably inserted into the chute and locked by a tightening bolt.

[0012] Furthermore, the support sheet metal is fixed to the top wall of the tunnel by expansion screws.

[0013] Furthermore, it further includes a voltage sensor for detecting the voltage when the pantograph of the train contacts the charging rail. The voltage sensor is communicatively connected to the charging control module.

[0014] Advantageous Effects

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] The laser ranging sensor of the present utility model is non-contact. It measures the target distance by recording and processing the time from the emission to the reception of the light pulse. Due to the high speed of light, strong anti-interference ability, extremely short detection response time, high sensitivity, very low operating cost and high efficiency, it provides good guarantee for the normal charging operation of the train. Since the operating distance of the laser ranging sensor is large, there is enough distance to reduce the potential damage caused by contacting moving objects. Brief Description of the Drawings

[0017] Figure 1 is the front view structural schematic diagram of the present utility model;

[0018] Figure 2 is the left view structural schematic diagram of the present utility model;

[0019] Figure 3 is the schematic diagram of the laser ranging sensor at the entrance detecting the train;

[0020] Figure 4 is the schematic diagram of the laser ranging sensor at the entrance and the laser ranging sensor at the exit simultaneously detecting the train;

[0021] Figure 5 is the schematic diagram of the laser ranging sensor at the exit simultaneously detecting the train;

[0022] Figure 6 is the schematic diagram of the base being installed on the top wall of the tunnel through the support sheet metal;

[0023] Figure 7 is the front view structural schematic diagram of the base installed on the support sheet metal;

[0024] Figure 8 is the left view structural schematic diagram of the base installed on the support sheet metal;

[0025] Figure 9 is the structural schematic diagram of the bottom of the base;

[0026] Figure 10 It is a wiring block diagram of the charging control module.

[0027] Among them: 1 - charging control module, 2 - laser ranging sensor at the entrance, 3 - laser ranging sensor at the exit, 4 - base, 5 - tunnel top wall, 6 - ground rail, 7 - train, 8 - lead wire, 9 - waterproof joint, 10 - circular hole, 11 - arc hole, 12 - charging rail, 13 - support sheet metal, 14 - chute, 15 - slider, 16 - pantograph, 17 - voltage sensor, 18 - detection and transmission path of laser signal at the entrance, 19 - detection and transmission path of laser signal at the exit, 20 - tightening bolt, 21 - charger. Specific implementation mode

[0028] The following further describes the present utility model with specific embodiments in the accompanying drawings.

[0029] Refer to Figures 1 to 10 , an energy storage tram charging system based on laser ranging sensors, including a charging control module 1, and the charging control module 1 is used to control the charger 21 to charge the train 7. The charging system also includes a laser ranging sensor 2 at the entrance and a laser ranging sensor 3 at the exit. The laser ranging sensor 2 at the entrance and the laser ranging sensor 3 at the exit are respectively installed on the tunnel top wall 5 through the base 4 and are located directly above the ground rail 6. The acquisition surfaces of the laser ranging sensor 2 at the entrance and the laser ranging sensor 3 at the exit face downward and are used to detect the train 7. The distance between the laser ranging sensor 2 at the entrance and the laser ranging sensor 3 at the exit is less than the length of the train 7. When the train 7 is in the charging position, the train 7 is directly below the charging rail 12. At this time, the horizontal distance between the laser ranging sensor 2 at the entrance and the tail of the train 7 is 0.9 - 1.1 m, and the horizontal distance between the laser ranging sensor 3 at the exit and the head of the train 7 is 0.9 - 1.1 m. The laser ranging sensor 2 at the entrance and the laser ranging sensor 3 at the exit are respectively communicatively connected to the charging control module 1 through the lead wire 8. The lead wire 8 is connected to the laser ranging sensor 2 at the entrance and the laser ranging sensor 3 at the exit through the waterproof joint 9. Preferably, the waterproof joint 9 is an M12 waterproof joint.

[0030] The in-station laser distance sensor 2 and the out-station laser distance sensor 3 are provided with three mounting holes. Specifically, a circular hole 10 is provided in the middle of the base 4, and arc-shaped holes 11 are respectively provided on both sides of the circular hole 10. The centers of the arc-shaped holes 11 on both sides coincide with the center of the circular hole 10. The in-station laser distance sensor 2 and the out-station laser distance sensor 3 are both installed on the circular hole 10 and two arc-shaped holes 11 of the base 4 through three bolts, so that the in-station laser distance sensor 2 and the out-station laser distance sensor 3 can conveniently adjust any installation angle according to the application scenario (the in-station laser distance sensor 2 and the out-station laser distance sensor 3 can rotate around the circular hole 10 to adjust the installation angle).

[0031] In this embodiment, the specifications of the in-station laser distance sensor 2 and the out-station laser distance sensor 3 are both: detection range 5m, frequency 100HZ, and powered by DC24V voltage. The vertical distances between the in-station laser distance sensor 2, the out-station laser distance sensor 3 and the platform ground are both 4.5m.

[0032] The in-station laser distance sensor 2 and the out-station laser distance sensor 3 are installed at the central axis position of the charging rail 12.

[0033] Preferably, the number of the in-station laser distance sensors 2 is 2. The 2 in-station laser distance sensors 2 are connected in parallel, which can achieve redundant detection and prevent the charging from being affected after one in-station laser distance sensor 2 is damaged. The 2 in-station laser distance sensors 2 are respectively connected to the charging control module 1 through optocoupler communication. The number of the out-station laser distance sensors 3 is 2. The 2 out-station laser distance sensors 3 are connected in parallel. The 2 out-station laser distance sensors 3 are respectively connected to the charging control module 1 through optocoupler communication. That is, the in-station laser distance sensor 2 and the out-station laser distance sensor 3 transmit the detected train in-station signal to the charging control module 1 after optocoupler isolation.

[0034] Similarly, the 2 in-station laser distance sensors 2 and the 2 out-station laser distance sensors 3 are installed at the central axis position of the charging rail 12.

[0035] The signal lines of the existing RF card device can be fully utilized. The blue and brown are the power lines, and the black is the first-way output signal line. The detection distance effectiveness settings of the 4 laser distance sensors are shown in Table 1 below:

[0036]

[0037]

[0038] Table 1 Laser distance sensor parameter settings

[0039] In one embodiment, as Figures 6 - 9As shown in the figure, the top wall 5 of the tunnel is provided with a support sheet metal 13. A chute 14 is provided in the middle of the support sheet metal 13. A slider 15 is provided on the top of the base 4. The slider 15 is slidably inserted into the chute 14 and locked by a tightening bolt 20, which can conveniently adjust the installation position of the base 4. The support sheet metal 13 is fixed to the top wall 5 of the tunnel by expansion bolts.

[0040] This charging system further includes a voltage sensor 17 for detecting the voltage when the pantograph 16 of the train 7 contacts the charging rail 12. The voltage sensor 17 is communicatively connected to the charging control module 1.

[0041] Working principle:

[0042] Figure 3 As shown in the figure, for the judgment of the train entering the station, the head feedback signal of the train when the laser ranging sensor 2 at the entrance of the station detects the train entering the station, and the laser signal detection and transmission path 18 at the entrance of the station contacts the head of the train.

[0043] Figure 4 As shown in the figure, for the judgment of the vehicle completely entering the station, at this time, both the laser ranging sensor 2 at the entrance of the station and the laser ranging sensor 3 at the exit of the station can detect the feedback signal of the train, that is, the laser signal detection and transmission path 18 at the entrance of the station contacts the tail of the train, and the laser signal detection and transmission path 19 at the exit of the station contacts the head of the train.

[0044] When the laser signal of the tram entering the station and the exit signal are detected simultaneously, and the voltage sensor 17 detects that the charging rail 12 receives the voltage signal of the pantograph 16, the coexistence of these three signals is used as the basis for judging the start of charging. The charging control module 1 controls the charger 21 to start charging the train 7. That is, the electric energy is sequentially charged into the battery of the train 7 through the charger 21, the charging rail 12, and the pantograph 16.

[0045] Figure 5 As shown in the figure, for the vehicle leaving the station, at this time, the laser ranging sensor 2 at the entrance of the station cannot detect the entrance signal, and the laser signal at the exit of the station remains. The system judges that the vehicle has left the station. At this time, the charging control module 1 controls the charger 21 to stop charging the train 7.

[0046] The above is only the preferred embodiment of the present invention. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. A storage electric vehicle charging system based on a laser ranging sensor, comprising a charging control module (1), characterized in that: It also includes an entrance laser distance measuring sensor (2) and an exit laser distance measuring sensor (3), wherein the entrance laser distance measuring sensor (2) and the exit laser distance measuring sensor (3) are respectively installed on the tunnel top wall (5) through a base (4) and are located directly above the ground rail (6), the collection surfaces of the entrance laser distance measuring sensor (2) and the exit laser distance measuring sensor (3) face downward, the distance between the entrance laser distance measuring sensor (2) and the exit laser distance measuring sensor (3) is less than the length of the train (7), and when the train (7) is at the charging position, the horizontal distance between the entrance laser distance measuring sensor (2) and the rear of the train (7) is 0.9 to 1.1 m, and the distance between the exit laser distance measuring sensor (3) and the head of the train (7) is 0.9 to 1.1 m. The horizontal distance between the two terminals is 0.9 to 1.1 m. The entrance laser distance sensor (2) and the exit laser distance sensor (3) are respectively connected to the charging control module (1) through leads (8). The leads (8) are connected to the entrance laser distance sensor (2) and the exit laser distance sensor (3) through waterproof connectors (9). A circular hole (10) is provided in the middle of the base (4). Arc holes (11) are respectively provided on both sides of the circular hole (10). The centers of the arc holes (11) on both sides coincide with the centers of the circular holes (10). The entrance laser distance sensor (2) and the exit laser distance sensor (3) are both mounted on the circular hole (10) and the two arc holes (11) of the base (4) through three bolts.

2. According to claim 1, a laser ranging sensor-based energy storage electric vehicle charging system is characterized in that: The specifications of the laser distance measuring sensor (2) at the entrance and the laser distance measuring sensor (3) at the exit are: detection range 5m, frequency 100HZ, and power supply voltage DC24V.

3. The energy storage type electric vehicle charging system based on a laser ranging sensor according to claim 1 is characterized in that: The vertical distance between the entrance laser distance measuring sensor (2) and the exit laser distance measuring sensor (3) and the platform ground is 4.5 m.

4. The energy storage type electric vehicle charging system based on a laser ranging sensor according to claim 1 is characterized in that: The entrance laser distance measuring sensor (2) and the exit laser distance measuring sensor (3) are installed at the central axis of the charging rail (12).

5. The energy storage type electric vehicle charging system based on a laser ranging sensor according to claim 1 is characterized in that: The number of the station entrance laser distance measuring sensors (2) is two, the two station entrance laser distance measuring sensors (2) are arranged in parallel, and the two station entrance laser distance measuring sensors (2) are respectively connected to the charging control module (1) via optical coupling communication.

6. The energy storage type electric vehicle charging system based on laser ranging sensor according to claim 5 is characterized in that: The number of the exit laser distance measuring sensors (3) is two, the two exit laser distance measuring sensors (3) are arranged in parallel, and the two exit laser distance measuring sensors (3) are respectively connected to the charging control module (1) via optical coupling communication.

7. The energy storage type electric vehicle charging system based on a laser ranging sensor according to claim 4 is characterized in that: The two entrance laser distance measuring sensors (2) and the two exit laser distance measuring sensors (3) are installed at the central axis of the charging rail (12).

8. The energy storage electric vehicle charging system based on a laser ranging sensor according to claim 1 is characterized in that: The tunnel top wall (5) is provided with a supporting sheet metal (13), a slide groove (14) is provided in the middle of the supporting sheet metal (13), and a slider (15) is provided on the top of the base (4), and the slider (15) is slidably inserted in the slide groove (14) and locked by a tightening bolt (20).

9. The energy storage type electric vehicle charging system based on laser ranging sensor according to claim 8 is characterized in that: The supporting sheet metal (13) is fixed to the tunnel top wall (5) via expansion screws.

10. The energy storage electric vehicle charging system based on a laser ranging sensor according to claim 4, characterized in that: It also includes a voltage sensor (17) for detecting the voltage when the pantograph (16) of the train (7) contacts the charging rail (12), and the voltage sensor (17) is communicatively connected to the charging control module (1).

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