Freight vehicle data transmission repeater

Abstract

The utility model discloses a freight vehicle data transmission repeater, which belongs to the technical field of communication transmission and comprises a relay device, a temperature sensor arranged at a corresponding part of a freight vehicle and a vehicle-mounted host in a cab, the relay device comprises a relay outer shell, a relay mainboard integrated with an antenna and an outer shell top cover, the relay device is in wireless communication with the communication module of the temperature sensor through the antenna at the frequency of 433 MHz, and a relay network structure is adopted between the temperature sensor and the relay device. According to the utility model, the power supply and the data transmission between the vehicle-mounted host and the relay device are realized through the vehicle-mounted 24V power supply, and the relay device forwards the data transmitted by the temperature sensor through the communication module through a relay network structure. Therefore, the occurrence of network disconnection and communication interference is reduced, and the network stability is improved.

Description

Technical Field

[0001] The utility model discloses a communication transmission technology, in particular to a data transmission repeater for freight vehicles. Background Art

[0002] During the driving process of a freight truck, a temperature sensor can be used to detect the operating temperatures of the wheel hubs, gearboxes, front and rear axles, and engines to ensure the driving safety of the freight truck.

[0003] The temperature sensor for detection can monitor and transmit and receive data. However, in order to detect the corresponding freight truck components, the temperature sensor generally uses an independent power supply and a method of transmitting data through WiFi or Bluetooth communication. However, for relatively remote temperature sensors, problems such as network disconnection and communication interference may occur, resulting in the inability to transmit the corresponding detection data. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a data transmission repeater for freight vehicles to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A data transmission repeater for freight vehicles, including a relay device, a temperature sensor installed at the corresponding part of the freight truck, and an in-vehicle host in the cab. The temperature sensor is provided with a communication module. The relay device includes a relay outer casing, a relay main board integrated with an antenna, and an outer casing top cover. The relay device performs wireless communication with the communication module of the temperature sensor at a frequency of 433 MHz through the antenna. A relay network structure is adopted between the temperature sensor and the relay device. The relay device performs power supply and data transmission with the in-vehicle host through the in-vehicle 24V power supply.

[0006] By adopting the above technical solution, the in-vehicle 24V power supply can not only supply power but also perform data transmission. With the help of the relay device, the wireless communication data transmission of the temperature sensor at a frequency of 433 MHz through the communication module is forwarded, reducing the occurrence of network disconnection and communication interference.

[0007] Preferably, the mechanism of the relay network structure is as follows:

[0008] S1, the temperature sensor automatically searches for nearby networks through the communication module and connects to the nearest relay device as a relay access point;

[0009] S2, the relay device, as a relay access point, will search for nearby network channels and allocate different channels for connection to the communication module of each temperature sensor;

[0010] S3, each temperature sensor has a different scheduling period when transmitting data through the communication module.

[0011] By adopting the above technical solution, the signal interference of the communication module between temperature sensors is reduced through this relay network structure.

[0012] Preferably, positioning holes are provided around the relay main board, and positioning rods are provided at positions corresponding to the positioning holes in the relay housing. The positioning rods can pass through the positioning holes, and the positioning rods are provided with positioning platforms for blocking the relay main board.

[0013] By adopting the above technical solution, the relay main board is limited and blocked by the positioning rods and the positioning platforms.

[0014] Preferably, positioning columns for receiving the positioning rods to extend and be clamped are provided at positions corresponding to the positioning rods on the top cover of the housing, and a waterproof sleeve for receiving the antenna to extend is also provided on the top cover of the housing.

[0015] By adopting the above technical solution, the relay main board is prevented from loosening through the clamping fit.

[0016] Preferably, a wire hole is provided at the position where the vehicle-mounted 24V power supply extends out of the relay housing. The shape of the wire hole is funnel-shaped. A waterproof ring is sleeved on the vehicle-mounted 24V power supply and is matched with the wire hole. The front end of the waterproof ring is an elastic corrugated tube, and the rear end is an end cover with a diameter larger than the wire hole.

[0017] By adopting the above technical solution, the waterproof ring prevents water from the outside from invading the relay housing through the wire hole where the vehicle-mounted 24V power supply extends, resulting in a short circuit of the relay device.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] The vehicle-mounted 24V power supply realizes the power supply and data transmission between the vehicle-mounted host and the relay device, and the relay network structure is used to realize the relay device to forward the data transmitted by the temperature sensor through the communication module, thereby reducing the occurrence of network disconnection and communication interference and improving the network stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a data transmission repeater for a freight vehicle Figure 1 ;

[0021] Figure 2 is a schematic structural diagram of a data transmission repeater for a freight vehicle Figure 2 ;

[0022] Figure 3 is a schematic structural diagram of a data transmission repeater for a freight vehicle Figure 3 ;

[0023] Figure 4 is a cross-sectional view of the waterproof ring.

[0024] Reference numerals: 1, top cover of the outer housing; 2, vehicle-mounted 24V power supply; 3, waterproof housing; 4, relay outer housing; 5, elastic corrugated tube; 6, end cover; 7, antenna; 8, relay main board; 9, positioning table; 10, positioning rod; 11, wire hole; 12, waterproof ring; 13, positioning column. Detailed implementation

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] A data transmission repeater for a freight vehicle, as Figures 1 - 4 shown, includes a relay device, a temperature sensor installed at a corresponding part of the freight vehicle, and a vehicle-mounted host in the cab. The temperature sensor is provided with a communication module. The relay device includes a relay outer housing 4, a relay main board 8 integrated with an antenna 7, and a top cover 1 of the outer housing. The relay device performs wireless communication at a frequency of 433 MHz with the communication module of the temperature sensor through the antenna 7. A relay network structure is adopted between the temperature sensor and the relay device. The relay device is powered and data-transmitted with the vehicle-mounted host through the vehicle-mounted 24V power supply 2.

[0027] The mechanism of the relay network structure is as follows:

[0028] S1, the temperature sensor automatically searches for nearby networks through the communication module and connects to the nearest relay device as a relay access point;

[0029] S2, the relay device as a relay access point will search for nearby network channels and allocate different channels for connection to the communication modules of each temperature sensor;

[0030] S3, each temperature sensor has a different scheduling period when transmitting data through the communication module.

[0031] The scheduling period separates the time nodes for data transmission of each temperature sensor, so that when each temperature sensor conducts data transmission, the wireless communication signals at the 433 MHz frequency do not interfere with each other, and different channels are allocated for binding to further reduce the interference between the wireless communication signals at the 433 MHz frequency.

[0032] There are positioning holes around the relay main board 8. At the positions corresponding to the positioning holes inside the relay housing 4, there are positioning rods 10. The positioning rods 10 can pass through the positioning holes, and the positioning rods 10 are provided with positioning platforms 9 that block the relay main board 8. At the positions corresponding to the positioning rods 10 on the top cover 1 of the housing, there are positioning columns 13 for receiving the positioning rods 10 to extend and be clamped. The top cover 1 of the housing is also provided with a waterproof sleeve 3 for receiving the antenna 7 to extend. Through the clamping cooperation of the positioning rods 10 and the positioning columns 13 and the blocking of the positioning platform 9, the relay main board 8 is limited between the positioning rods 10 and the positioning columns 13 to prevent the relay main board 8 from jolting and loosening.

[0033] At the position where the vehicle-mounted 24V power supply 2 extends out of the relay housing 4, there is a wire hole 11. The shape of the wire hole 11 is funnel-shaped. The vehicle-mounted 24V power supply 2 is sleeved with a waterproof ring 12 that cooperates with the wire hole 11. The front end of the waterproof ring 12 is an elastic corrugated tube 5, and the rear end is an end cover 6 with a diameter larger than the wire hole 11. The elastic corrugated tube can be extruded and forced to compress and deform through the wire hole 11 inside the relay housing 4. After passing through, it recovers under its own elasticity and is blocked outside the wire hole 11, and the end cover 6 can block the waterproof ring 12 from passing out of the wire hole 11.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A data transmission repeater for a freight vehicle, characterized in that: The invention comprises a relay device, a temperature sensor installed at a corresponding part of a truck and a vehicle-mounted host in a cab, wherein the temperature sensor is provided with a communication module, the relay device comprises a relay outer shell (4), a relay mainboard (8) integrated with an antenna (7) and an outer shell top cover (1), the relay device performs wireless communication at a frequency of 433 MHz with the communication module of the temperature sensor via the antenna (7), a relay network structure is adopted between the temperature sensor and the relay device, and the relay device performs power supply and data transmission with the vehicle-mounted host via a vehicle-mounted 24 V power supply (2).

2. A data transmission repeater for freight vehicles according to claim 1, characterized in that: Positioning holes are arranged around the relay main board (8), and positioning rods (10) are arranged at positions corresponding to the positioning holes in the relay outer shell (4). The positioning rods (10) can pass through the positioning holes, and the positioning rods (10) are provided with positioning platforms (9) that block the relay main board (8).

3. A data transmission repeater for freight vehicles according to claim 1, characterized in that: The outer shell top cover (1) is provided with a positioning column (13) for accommodating the positioning rod (10) to extend and engage at a position corresponding to the positioning rod (10), and the outer shell top cover (1) is also provided with a waterproof casing (3) for accommodating the extension of the antenna (7).

4. A data transmission repeater for freight vehicles according to claim 1, characterized in that: The position where the on-board 24V power supply (2) protrudes from the relay outer shell (4) is provided with a wire hole (11), the shape of the wire hole (11) is funnel-shaped, and the on-board 24V power supply (2) is provided with a waterproof ring (12) that matches the wire hole (11), the front end of the waterproof ring (12) is an elastic corrugated tube (5), and the rear end is an end cover (6) with a diameter larger than the wire hole (11).

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