CN117579406A - Trolleybus, communication method and system - Google Patents

Abstract

The application discloses a trolley bus, a communication method and a system, and relates to the technical field of wireless communication. The trolley bus comprises a carriage and a vehicle-mounted controller, and is characterized by further comprising a power receiving and communication assembly, wherein the power receiving and communication assembly is arranged at the top of the carriage and comprises a power receiving assembly and a communication assembly, the communication assembly is arranged on the power receiving assembly, and when the power receiving assembly is contacted with a contact net to be connected with a power supply, the communication assembly is also connected with a fixed wireless access point so as to be connected with a wireless network through the fixed wireless access point. According to the wireless power supply system, the fixed wireless access point is arranged at the fixed position, the trolley buses can transmit data to the fixed wireless access point at any time by using the power supply of the contact network as a power supply, and the wireless power supply system transmits the data to the wireless network in a wireless signal mode, so that the communication between the trolley buses and the control center do not consume the energy of the battery on the trolley buses, the load of the battery is greatly reduced, and the cruising duration of the trolley buses is improved.

Description

Trolleybus, communication method and system

Technical field

This application relates to the field of wireless communication technology, and in particular to trolleybuses, communication methods and systems.

Background technique

Trolleybuses are a form of urban public transportation that use contact wires as power supply. They use power receiving poles extending above the carriages to draw power from the contact wires to drive the motors, allowing the vehicles to run in the city. Since trolleybuses do not need to lay tracks before construction, and have high driving flexibility and strong adaptability to urban roads, they are still retained in some cities.

As a type of public transportation, trolleybuses need to communicate with other vehicles and the control center during operation to ensure that the vehicles travel on the right route at the right time in the intricate transportation network to ensure smooth and safe transportation operation. Since vehicles are moving most of the time, wireless communication can achieve more stable real-time communication. For example, CN107197537A provides a tram communication system and method, which uses wireless networks to connect trams, control rooms and control centers in the city to achieve interconnected communication.

However, the above-mentioned patent applies to trams. The power supply of trams is reliable when running, so on-board wireless access points can be used to send information in the form of wireless signals with greater power. However, for trolley buses, many currently use dual-source technology, that is, they draw power from the catenary and also use batteries to store electrical energy to ensure stable power supply even in areas where there is no catenary or the catenary is out of power. After using the battery, due to the limited capacity of the battery, if the vehicle-mounted wireless access point is still used, the load on the battery will be relatively large, which will directly affect the battery life.

Contents of the invention

Embodiments of the present application provide trolleybuses, communication methods and systems to solve the problem in the prior art that batteries in trolleybuses bear a heavy load.

On the one hand, embodiments of the present application provide a trolleybus, which includes a carriage and an on-board controller. It is characterized in that it also includes a power receiving and communication component. The power receiving and communication component is arranged on the top of the carriage. The power receiving and communication component includes a power receiving and communication component. component and communication component. The communication component is arranged on the powered component. When the powered component contacts the contact network to turn on the power, the communication component is also connected to the fixed wireless access point to access wireless through the fixed wireless access point. network.

On the other hand, embodiments of the present application also provide a trolleybus communication method, including:

Connect the communication component to the fixed wireless access point;

Use power from the catenary to power fixed wireless access points;

The vehicle controller sends the vehicle data to the fixed wireless access point through the communication component, and the fixed wireless access point inputs the vehicle data into the wireless network.

On the other hand, embodiments of the present application also provide a trolleybus communication system, including a catenary, a fixed wireless access point, and the above-mentioned trolleybus. The trolleybus contacts the catenary to turn on the power, and connects the trolleybus and the fixed wireless access point. When the access point is connected, the fixed wireless access point uses the power of the catenary and connects to the wireless network.

The trolleybus, communication method and system in this application have the following advantages:

By setting the fixed wireless access point at a fixed location and using the power supply of the catenary as the power source, the trolleybus can send data to the fixed wireless access point at any time and transmit it to the wireless network in the form of wireless signals, making the communication between trolleybuses Communication and communication between the trolleybus and the control center do not consume the energy of the battery on the trolleybus, which greatly reduces the load on the battery and is beneficial to improving the battery life of the trolleybus.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the overall structure of a trolleybus provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a power receiving and communication component provided by an embodiment of the present application;

Figure 3 is a schematic structural diagram of a power receiver and a communication contactor provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of the catenary provided by the embodiment of the present application;

Figure 5 is a schematic structural diagram of an isolation unit provided by an embodiment of the present application.

Explanation of reference numbers: 100, carriage; 200, vehicle-mounted controller; 300, power receiving and communication components; 310, power receiving pole; 311, power receiver; 3110, insulating shell; 3111, conductive block; 320, communication line; 321 , communication contactor; 400, cross bar; 410, suspension cable; 420, load-bearing cable; 430, power contact wire; 440, communication contact wire; 450, isolation unit; 4501, installation slot; 460, fixed wireless access point .

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Figures 1-3 are schematic structural diagrams of a trolleybus according to an embodiment of the present application. The embodiment of the present application provides a trolleybus, including a carriage 100, an on-board controller 200, and a power receiving and communication component 300. The power receiving and communication component 300 is disposed on the top of the carriage 100. The power receiving and communication component 300 includes a power receiving component and a communication component. component, the communication component is arranged on the power receiving component. When the power receiving component contacts the contact network to turn on the power, the communication component is also connected to the fixed wireless access point 460 to access the wireless network through the fixed wireless access point 460 .

For example, the onboard controller 200 can control each device in the carriage 100 and collect status data during the operation of the trolleybus. The data that needs to be sent to other trolleybuses or control centers will be sent to the fixed wireless through the communication component. Access point 460, so that the fixed wireless access point 460 sends data in the form of wireless signals. Since the fixed wireless access point 460 uses a contact network for power supply, it can use relatively large power to send out wireless signals so that other fixed wireless access points 460 within a larger range can receive the wireless signals. These fixed wireless access points that receive wireless signals can The wireless access point 460 can use the reverse process of transmitting wireless signals to send data to other trolleybuses or control centers.

Specifically, when communicating between trolleybuses, only other trolleybuses near the current trolleybus need to receive data, while when the trolleybus communicates with the control center, the distance between the trolleybus and the control center may be relatively far, so a fixed The wireless access point 460 transmits wireless signals with a large power, so the trolleybus needs to mark the receiving objects of the data before sending data. For data that only needs to be received by other trolleybuses within a small range and needs to be controlled at a longer distance The data received by the center uses different tags. After receiving the data, the fixed wireless access point 460 identifies the tags in the data. For data marked as "workshop data", smaller power can be used to transmit wireless signals, while for tags Data that is "vehicle-to-ground data" requires higher power to transmit wireless signals. When the fixed wireless access point 460 set up in other locations receives the data, it can also identify the tags in the data, and forward the data with different tags to different objects, such as data marked as "workshop data". It needs to be forwarded to the trolley bus that happens to be connected currently, and the data marked as "train data" is only received and forwarded to the control center by the fixed wireless access point 460 connected to the control center. Other fixed wireless access points that are not connected to the control center The access point 460 deletes the data marked as "vehicle-ground data" immediately after receiving it.

This application uses multiple fixed wireless access points 460 to form a wireless network. After receiving the data sent by the trolley bus, each fixed wireless access point 460 uses the power supply provided by the catenary to broadcast the data, regardless of the required transmit power. It will put a load on the battery on the trolleybus and will not consume the power of the trolleybus, which will help improve the battery life of the trolleybus.

In a possible embodiment, the power receiving component includes a power receiving rod 310 and a power receiver 311, and the communication component includes a communication line 320 and a communication contactor 321. Both ends of the communication line 320 are connected to the vehicle controller 200 and the communication contactor respectively. 321. The communication contactor 321 is provided on the outer side of the power receiver 311.

Illustratively, the power receiving pole 310 is rotatably disposed on the top of the carriage 100, and is specifically a solid or hollow pole. The cable used to connect the power supply is disposed on the power receiving pole 310. When the power receiving rod 311 follows, After the power receiving pole 310 is raised and contacted with the power contact line 430 above the carriage 100, the battery in the carriage 100 and the vehicle-mounted controller 200 are connected to the power source. The battery can be charged using the power source, and the vehicle-mounted controller 200 can be charged. This power supply is used to control the operation of equipment such as motors or air conditioners. When passing through some unenergized sections of the catenary, or entering an area in the parking lot where no catenary is erected, the power receiving pole 310 will no longer be able to obtain power. At this time, the on-board controller 200 The equipment in the carriage 100 can be switched to the power supply using the battery to prevent the equipment from stopping due to the inability of the trolley bus to obtain power.

Since the power receiving pole 310 is used to form the connection medium between the carriage 100 and the contact network, the present application can set the communication line 320 on the power receiving pole 310 and at the same time set the communication contactor 321 on the outer side of the power receiving pole 311. By arranging the communication contact line 440 in parallel near the power contact line 430 in the contact network, when the receiver 311 is in contact with the power contact line 430 to turn on the power, the communication contactor 321 also happens to be in contact with the communication contact line 440, and then the communication contact line 440 is connected. The vehicle-mounted controller 200 and the fixed wireless access point 460 are connected, so that the vehicle-mounted controller 200 can send data to the fixed wireless access point 460, and after the fixed wireless access point 460 receives the data, it can immediately convert it into a wireless signal. It can also be sent out simultaneously, or the data can be temporarily stored, and the data received multiple times can be sent out at once.

In a possible embodiment, the communication contactor 321 includes an insulating shell and a conductive block. The conductive block is disposed inside the insulating shell. The conductive block is used to contact the communication contact wire 440 disposed in the contact network to connect the vehicle-mounted controller. 200 is connected to the fixed wireless access point 460.

Illustratively, the power receiver 311 and the communication contactor 321 have the same structure, and they only differ in size. The power receiver 311 includes a U-shaped insulating shell 3110 and a conductive block 3111 disposed inside the insulating shell 3110. The conductive block 3111 can be made of graphite, and a groove matching the shape of the bottom of the power contact wire 430 is provided on the side opening toward the top of the insulating shell 3110. When the receiver 311 rises with the power receiving rod 310, the receiver 311 can The top of the power receiving rod 310 rotates to maintain normal contact between the power receiving rod 311 and the power contact wire 430 after the relative position and angle of the power receiving rod 310 and the power contact line 430 change, and the conductive block 3111 in the power receiving rod 311 is in contact with the power source. There is a large contact area between the wires 430, so that the two can maintain a relatively stable connection.

Since the structure of the power receiver 311 and the communication contactor 321 are the same, the structure of the communication contactor 321 will not be described in detail in this application, and reference can be made to the above description of the structure of the power receiver 311 .

Based on the above trolleybus, this application also provides a trolleybus communication method, which method includes:

Connect the communication component to the fixed wireless access point 460;

Use the power supply of the catenary to power the fixed wireless access point 460;

The vehicle controller 200 sends the vehicle data to the fixed wireless access point 460 through the communication component, and the fixed wireless access point 460 inputs the vehicle data into the wireless network.

Further, based on the above trolleybus and communication method, this application also provides a trolleybus communication system. The system includes a catenary, a fixed wireless access point 460 and the above-mentioned trolleybus. The trolleybus contacts the catenary to turn on the power supply. And the trolley bus is connected to the fixed wireless access point 460. The fixed wireless access point 460 uses the power supply of the catenary and accesses the wireless network.

For example, as shown in Figures 4-5, the contact network includes a crossbar 400, a power contact wire 430 and a communication contact wire 440. The power contact wire 430 and the communication contact wire 440 are both hung below the crossbar 400. The crossbar 400 can be set on a vertical pole fixed on the roadside. The crossbar 400 is set horizontally to extend above the road surface, and a power contact line 430 and a communication contact line 440 are connected below it, so that the trolleybus can operate During the process, sliding contact with the power contact line 430 and the communication contact line 440 is always maintained to ensure that power and data transmission are connected in real time when available. The power supply on the power contact line 430 can be provided by multiple rectifier stations arranged along the trolley bus line. The 600V or 550V direct current output from the rectifier station supplies power to the power contact line 430 through feeders. Since DC power needs to be distinguished between positive and negative poles during power transmission, the number of power contact wires 430 is two, which are positive potential wires and negative potential wires. Correspondingly, the power receiving pole 310 and the power receiver 311 on the top of the carriage 100 are also required. Two are provided, respectively for connecting to the positive potential power supply and the negative potential power supply, and the communication contactor 321 and the communication line 320 can be arranged on one of the power receivers 311 and the power receiving rod 310 .

In the embodiment of the present application, the contact network also includes a suspension cable 410 and a load-bearing cable 420. The suspension cable 410 is hung below the crossbar 400. The power contact line 430 and the communication contact line 440 are both located below the suspension cable 410. The upper end of the force-bearing cable 420 is connected to the suspension cable 410, and the lower end of the force-bearing cable 420 is connected to the power contact line 430 and the communication contact line 440.

After using the suspension cable 410 and the load-bearing cable 420, the power contact wire 430 and the communication contact wire 440 can be kept flexibly connected to the crossbar 400. Compared with directly hanging the power contact wire 430 and the communication contact wire 440 on the crossbar, After the rigid connection method at the bottom of the pole 400 is used and the flexible connection is adopted, the power contact wire 430 and the communication contact wire 440 can move to a certain extent relative to the cross bar 400 to adapt to the movement of the power receiving pole 310 and the receiver 311 during the movement of the trolley bus. , improve the stability of power collection and data transmission.

Furthermore, an isolation unit 450 is provided between the power contact line 430 and the communication contact line 440 , and the isolation unit 450 is connected to the lower end of the load-bearing cable 420 .

Since the voltage transmitted by the power contact line 430 is relatively high, and the voltage used by the communication contact line 440 when transmitting data is relatively small, usually only requiring 12V, 5V or even lower voltages, the isolation unit 450 needs to be used to insulate the two to ensure Higher voltage power transmitted on the power contact line 430 will not affect the communication contact line 440 . After using the suspension cable 410 and the load-bearing cable 420, the isolation unit 450 can be fixedly connected to the bottom end of the load-bearing cable 420, and then an installation for connecting the power contact line 430 and the communication contact line 440 is provided at the bottom of the isolation unit 450 Slot 4501, power contact wire 430 and communication contact wire 440 can be connected in the installation slot 4501 through various methods such as welding, bonding, bolting, etc., while keeping the bottom of the power contact wire 430 and communication contact wire 440 exposed, so that the receiver 311 and the communication contactor 321 are in normal contact with the power contact line 430 and the communication contact line 440 during the sliding process, and will not be blocked.

Further, the fixed wireless access point 460 is disposed on the crossbar 400 . After the fixed wireless access point 460 is installed on the crossbar 400, the space on the crossbar 400 can be fully utilized, and shorter cables or signal transmission lines can also be used to connect to the power contact line 430 and the communication contact line 440. Between the fixed wireless access point 460 and the fixed wireless access point 460, the fixed wireless access point 460 needs to step down the voltage after receiving the power from the power contact line 430 to form a 24V or 12V power supply, and finally provide it to the internal processing unit and External omnidirectional antenna.

Although the preferred embodiments of the present application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once the basic inventive concepts are understood. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this application.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (9)

1. A trolleybus includes a carriage (100) and an on-board controller (200). It is characterized in that it also includes a power receiving and communication component (300), and the power receiving and communication component (300) is arranged in the carriage (100). ), the power receiving and communication component (300) includes a power receiving component and a communication component, the communication component is arranged on the power receiving component, when the power receiving component contacts the contact network to turn on the power , the communication component is also connected to the fixed wireless access point (460) to access the wireless network through the fixed wireless access point (460). 2. The trolley bus according to claim 1, characterized in that the power receiving component includes a power receiving pole (310) and a power receiver (311), and the communication component includes a communication line (320) and a communication contactor ( 321), both ends of the communication line (320) are connected to the vehicle-mounted controller (200) and the communication contactor (321) respectively, and the communication contactor (321) is arranged outside the power receiver (311). side. 3. The trolley bus according to claim 2, characterized in that the communication contactor (321) includes an insulating shell and a conductive block, the conductive block is arranged inside the insulating shell, and the conductive block is used to communicate with The communication contact line (440) provided in the contact network contacts to connect the vehicle-mounted controller (200) with the fixed wireless access point (460). 4. Trolleybus communication method, characterized by including: Connect the communication component to the fixed wireless access point (460); Use the power supply of the catenary to provide power to the fixed wireless access point (460); The vehicle-mounted controller (200) sends vehicle data to the fixed wireless access point (460) through the communication component, and the fixed wireless access point (460) inputs the vehicle data into a wireless network. 5. Trolleybus communication system, characterized in that it includes a catenary, a fixed wireless access point (460) and the trolleybus according to any one of claims 1-3, and the trolleybus is in contact with the catenary to connect. Turn on the power supply and connect the trolley bus to the fixed wireless access point (460). The fixed wireless access point (460) uses the power supply of the contact network and accesses the wireless network. 6. The trolley bus communication system according to claim 5, characterized in that the contact network includes a cross bar (400), a power contact line (430) and a communication contact line (440), and the power contact line (430) ) and the communication contact wire (440) are hung below the crossbar (400). 7. The trolley bus communication system according to claim 6, characterized in that the contact network further includes a suspension cable (410) and a load-bearing cable (420), and the suspension cable (410) is hung on the cross bar. (400), the power contact wire (430) and the communication contact wire (440) are located below the suspension cable (410), and the upper end of the load-bearing cable (420) is connected to the suspension cable (410). The lower end of the load-bearing cable (420) is connected to the power contact line (430) and the communication contact line (440). 8. The trolley bus communication system according to claim 7, characterized in that an isolation unit (450) is provided between the power contact line (430) and the communication contact line (440), and the isolation unit (450) Connected to the lower end of the load-bearing cable (420). 9. The trolley bus communication system according to claim 6, characterized in that the fixed wireless access point (460) is arranged on the crossbar (400).