Device and method for monitoring field intensity of multiple communication systems of vehicle-mounted wireless equipment and communication equipment

Abstract

The invention relates to a multi-communication-system field intensity monitoring device and method for vehicle-mounted wireless equipment and communication equipment, and is characterized in that two independent directional couplers are arranged between a vehicle-mounted antenna and a communication radio station and are respectively used for monitoring the field intensity of uplink transmission and downlink reception; the two directional couplers are respectively connected to independent radio frequency ICs through independent radio frequency switches, and the two radio frequency ICs are in signal connection with the MCU; the two independent radio frequency switches are respectively used for controlling independent conduction of uplink and downlink signals; the two independent radio frequency ICs are respectively used for independently collecting uplink and downlink signals; and the MCU is used for controlling the two independent radio frequency ICs to switch between multiple frequencies and systems and reading corresponding field intensity data. Compared with the prior art, the invention can realize direct and rapid switching between multiple frequency bands and modes, meets the requirements of simultaneous acquisition of multiple modes, multi-band acquisition, only uplink, only downlink and uplink and downlink, has higher integration level and flexibility, and can be applied to multiple acquisition scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of train wireless communication monitoring, and in particular to a multi-communication standard field strength monitoring device and method for on-board wireless equipment. Background Art

[0002] On-board wireless communication equipment plays an important role in train-ground communication during train operation. On-board equipment generally has multiple communication modes such as 400MHz, 450MHz or 800MHz for voice or data communication. When wireless communication equipment is communicating, the field strength of transmission and reception is an important indicator affecting communication services. The ability to monitor the transmission and reception field strength of wireless communication equipment in real time is of great significance for locating and maintaining equipment failures.

[0003] The air interface monitoring equipment currently in use is not only small in number and single in monitoring format, but more importantly, because it is installed on the ground, it cannot meet the monitoring needs of the mobility of vehicle-mounted equipment. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art that the monitoring system is single and cannot meet the requirements of mobile monitoring of vehicle-mounted equipment, and to provide a multi-communication system field strength monitoring device and method for vehicle-mounted wireless equipment.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] As a first aspect of the present invention, a multi-communication standard field strength monitoring device for a vehicle-mounted wireless device is provided. The monitoring device is arranged between a vehicle-mounted antenna and a communication radio station, and includes two independent directional couplers, which are respectively used for monitoring the field strength of uplink transmission and downlink reception. The two directional couplers are each connected to an independent radio frequency IC through an independent radio frequency switch, and the two independent radio frequency ICs are respectively connected to an MCU signal;

[0007] The two independent radio frequency switches are used to control the independent conduction of uplink and downlink signals respectively;

[0008] The two independent radio frequency ICs are used to independently collect uplink and downlink signals respectively;

[0009] The MCU is used to control the two independent radio frequency ICs to switch between multiple frequencies and standards and read corresponding field strength data.

[0010] As a preferred technical solution, one end of the two independent RF switches is connected to the corresponding independent RF IC, and the other end is grounded through a load.

[0011] As a second aspect of the present invention, a method for monitoring field strength of a multi-communication standard of a vehicle-mounted wireless device is provided. The method adopts the field strength monitoring device as described above and cyclically executes the following steps:

[0012] Turn on the RF switch corresponding to the directional coupler used to monitor the downlink receiving field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the uplink transmitting field strength.

[0013] MCU controls the RF IC to work in different downlink receiving frequency bands and reads the receiving field strength of the corresponding downlink frequency bands;

[0014] Turn on the RF switch corresponding to the directional coupler used to monitor the uplink transmission field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the downlink reception field strength.

[0015] The MCU controls the RF IC to work in different uplink transmission frequency bands and reads the transmission field strength of the corresponding uplink frequency band.

[0016] As a preferred technical solution, the downlink receiving frequency bands of the radio frequency IC controlled by the MCU include: a downlink receiving frequency band of 400 MHz, a downlink receiving frequency band of 450 MHz and a downlink receiving frequency band of 800 MHz.

[0017] As a preferred technical solution, the MCU sequentially controls the RF IC to operate in a downlink receiving frequency band of 400 MHz, a downlink receiving frequency band of 450 MHz, and a downlink receiving frequency band of 800 MHz, and collects the field strength of the corresponding downlink receiving frequency band;

[0018] When the MCU finishes reading the data of the RF IC in the current downlink receiving frequency band, it controls the RF IC to work in the next downlink receiving frequency band and reads the data of the RF IC in the corresponding downlink receiving frequency band;

[0019] After completing the reading of the band RF IC data of all downlink receiving bands, switch the RF switch, and the MCU controls the RF IC and reads the transmission field strength of different uplink bands.

[0020] As a preferred technical solution, the uplink transmission frequency bands of the radio frequency IC controlled by the MCU include: an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz and an uplink transmission frequency band of 800 MHz.

[0021] As a preferred technical solution, the MCU sequentially controls the RF IC to operate in an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz, and an uplink transmission frequency band of 800 MHz, and collects the field strength of the corresponding uplink transmission frequency band;

[0022] After the MCU finishes reading the data of the RF IC in the current uplink transmission frequency band, it controls the RF IC to work in the next uplink transmission frequency band and reads the data of the RF IC in the corresponding uplink transmission frequency band;

[0023] After completing the reading of the band RF IC data of all uplink transmission bands, switch the RF switch, and the MCU controls the RF IC and reads the receiving field strength of different downlink frequency bands.

[0024] As a third aspect of the present invention, there is provided a vehicle-mounted wireless communication device, comprising a communication radio station and a vehicle-mounted antenna, wherein the vehicle-mounted wireless device multi-communication standard field strength monitoring device as described above is arranged between the communication radio station and the vehicle-mounted antenna.

[0025] As a preferred technical solution, the field intensity monitoring device cyclically performs the following steps:

[0026] Turn on the RF switch corresponding to the directional coupler used to monitor the downlink receiving field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the uplink transmitting field strength. The MCU controls the RF IC to work in different downlink receiving frequency bands and reads the receiving field strength of the corresponding downlink frequency band.

[0027] Turn on the RF switch corresponding to the directional coupler used to monitor the uplink transmission field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the downlink reception field strength. The MCU controls the RF IC to work in different uplink transmission frequency bands and reads the transmission field strength of the corresponding uplink frequency band.

[0028] As a preferred technical solution, the downlink receiving frequency bands of the radio frequency IC controlled by the MCU include: a downlink receiving frequency band of 400MHz, a downlink receiving frequency band of 450MHz, and a downlink receiving frequency band of 800MHz;

[0029] The uplink transmission frequency bands of the radio frequency IC controlled by the MCU include: an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz, and an uplink transmission frequency band of 800 MHz.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The monitoring device proposed in the present invention is designed for vehicle-mounted equipment and is installed on the vehicle to meet the mobility requirements of the vehicle-mounted equipment. It adopts two independent RF switches and two independent RF ICs, which can meet the needs of uplink only, downlink only and uplink and downlink simultaneous collection; it adopts an independent uplink and downlink directional coupling design, and can flexibly design coupling parameters according to different coupling needs of uplink and downlink, and has stronger adaptability; through the controllable RF IC, it can directly and quickly switch between multiple frequency bands and standards to meet the needs of multiple standards and multi-frequency band collection. It has high integration and flexibility and can be applied to various collection scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the hardware structure of the multi-communication standard field strength monitoring device for vehicle-mounted wireless equipment of the present invention;

[0033] Figure 2 It is a control flow chart of the method for monitoring field strength of multiple communication standards of vehicle-mounted wireless equipment of the present invention. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0035] Example 1

[0036] This technical solution involves a multi-communication standard field strength monitoring device for vehicle-mounted wireless equipment. The hardware components of the device are as follows: Figure 1 As shown, it includes two independent directional couplers, which can respectively monitor the field strength of uplink transmission and downlink reception; the two independent directional couplers are respectively connected to an independent RF IC through an independent RF switch, and the two independent RF ICs are connected to the same MCU.

[0037] Among them, one end of the two independent RF switches is connected to the corresponding independent RF IC, and the other end is grounded through the load, so that the uplink and downlink signals can be independently conducted and processed by two independent RF ICs, and the uplink and downlink signals can be independently collected; one MCU can control the RF IC and read data to perform related collection operations; the RF IC can switch between multiple frequencies and standards and process the corresponding data under the processing of the MCU.

[0038] The monitoring device proposed by the present invention is designed for vehicle-mounted equipment and is installed on the vehicle to meet the mobility requirements of vehicle-mounted equipment. It adopts 2 independent RF switches and 2 independent RF ICs to meet the needs of uplink only, downlink only, and uplink and downlink simultaneous acquisition. It adopts independent uplink and downlink directional coupling design to flexibly design coupling parameters for different coupling needs of uplink and downlink, and has stronger adaptability. Through controllable RF IC, it can directly and quickly switch between multiple frequency bands and standards to meet the needs of multiple standards and multi-frequency band acquisition. The monitoring device has high integration and flexibility and can be applied to a variety of acquisition scenarios.

[0039] Example 2

[0040] As another embodiment of the present invention, the present invention also provides a field strength monitoring method using the multi-communication standard field strength monitoring device for vehicle-mounted wireless devices as described in the above embodiment 1, such as Figure 2 As shown, the specific process is as follows:

[0041] 1. When starting up, turn on RF switch 1 and turn off RF switch 2:

[0042] 1.1) MCU controls the RF IC to work in the 400MHz downlink receiving frequency band and perform field strength reading operations.

[0043] 1.2) MCU controls the RF IC to work in the 450MHz downlink receiving frequency band and perform field strength reading operations.

[0044] 1.3) MCU controls the RF IC to work in the 800MHz downlink receiving frequency band and perform field strength reading operations.

[0045] 2. After completing step 1, turn on RF switch 2 and turn off RF switch 1:

[0046] 2.1) MCU controls the RF IC to operate in the 400MHz uplink transmission frequency band and perform field strength reading operations.

[0047] 2.2) MCU controls the RF IC to operate in the 450MHz uplink transmission frequency band and perform field strength reading operations.

[0048] 2.3) MCU controls the RF IC to operate in the uplink transmission frequency band of 800MHz and performs field strength reading operations.

[0049] 3. After completing step 2, repeat step 1.

[0050] Example 3

[0051] As a third embodiment of the present invention, the present invention further provides a vehicle-mounted wireless communication device, which includes a communication radio station and a vehicle-mounted antenna, and a vehicle-mounted wireless device multi-communication standard field strength monitoring device as described in Example 1 above is arranged between the communication radio station and the vehicle-mounted antenna, and the field strength monitoring device cyclically executes the steps of the monitoring method as described in Example 2:

[0052] The RF switch corresponding to the directional coupler used to monitor the downlink receiving field strength is turned on, and the RF switch corresponding to the directional coupler used to monitor the uplink transmitting field strength is turned off. The MCU controls the RF IC to work in different downlink receiving frequency bands in turn, and reads the receiving field strength of the corresponding downlink frequency band;

[0053] Turn on the RF switch corresponding to the directional coupler used to monitor the uplink transmission field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the downlink reception field strength. The MCU controls the RF IC to work in different uplink transmission frequency bands in turn and reads the transmission field strength of the corresponding uplink frequency band.

[0054] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A multi-communication standard field strength monitoring device for vehicle-mounted wireless equipment, characterized in that: The monitoring device is arranged between the vehicle-mounted antenna and the communication radio station, and includes two independent directional couplers, which are respectively used for monitoring the field strength of uplink transmission and downlink reception. The two directional couplers are respectively connected to an independent RF IC through an independent RF switch, and the two independent RF ICs are respectively connected to the MCU signal; The two independent radio frequency switches are used to control the independent conduction of uplink and downlink signals respectively; The two independent radio frequency ICs are used to independently collect uplink and downlink signals respectively; The MCU is used to control the two independent radio frequency ICs to switch between multiple frequencies and standards and read corresponding field strength data.

2. The multi-communication standard field strength monitoring device for vehicle-mounted wireless equipment according to claim 1, characterized in that: One end of the independent radio frequency switch is connected to the corresponding independent radio frequency IC, and the other end is grounded through a load.

3. A method for monitoring field strength of multi-communication standards of vehicle-mounted wireless equipment, characterized in that: The method adopts the field strength monitoring device according to any one of claims 1 to 2, and cyclically performs the following steps: Turn on the RF switch corresponding to the directional coupler used to monitor the downlink receiving field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the uplink transmitting field strength. The MCU controls the RF IC to work in different downlink receiving frequency bands and reads the receiving field strength of the corresponding downlink frequency band. Turn on the RF switch corresponding to the directional coupler used to monitor the uplink transmission field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the downlink reception field strength. The MCU controls the RF IC to work in different uplink transmission frequency bands and reads the transmission field strength of the corresponding uplink frequency band.

4. A method for monitoring field strength of multiple communication modes of vehicle-mounted wireless equipment according to claim 3, characterized in that: The downlink receiving frequency bands in which the radio frequency IC controlled by the MCU works include: a downlink receiving frequency band of 400 MHz, a downlink receiving frequency band of 450 MHz and a downlink receiving frequency band of 800 MHz.

5. A method for monitoring field strength of multiple communication modes of vehicle-mounted wireless equipment according to claim 4, characterized in that: The MCU sequentially controls the RF IC to operate in a downlink receiving frequency band of 400 MHz, a downlink receiving frequency band of 450 MHz, and a downlink receiving frequency band of 800 MHz, and collects receiving field strengths of corresponding downlink frequency bands; When the MCU finishes reading the data of the RF IC in the current downlink receiving frequency band, it controls the RF IC to work in the next downlink receiving frequency band and reads the data of the RF IC in the corresponding downlink receiving frequency band; After completing the reading of the band RF IC data of all downlink receiving bands, switch the RF switch, and the MCU controls the RF IC and reads the transmission field strength of different uplink bands.

6. A method for monitoring field strength of multiple communication modes of vehicle-mounted wireless equipment according to claim 3, characterized in that: The uplink transmission frequency bands of the radio frequency IC controlled by the MCU include: an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz and an uplink transmission frequency band of 800 MHz.

7. A method for monitoring field strength of multiple communication modes of vehicle-mounted wireless devices according to claim 6, characterized in that: The MCU sequentially controls the radio frequency IC to operate in an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz, and an uplink transmission frequency band of 800 MHz, and collects the field strength of the corresponding uplink transmission frequency band; After the MCU finishes reading the data of the RF IC in the current uplink transmission frequency band, it controls the RF IC to work in the next uplink transmission frequency band and reads the data of the RF IC in the corresponding uplink transmission frequency band; After completing the reading of the band RF IC data of all uplink transmission bands, switch the RF switch, and the MCU controls the RF IC and reads the receiving field strength of different downlink frequency bands.

8. A vehicle-mounted wireless communication device, comprising a communication radio station and a vehicle-mounted antenna, characterized in that: A vehicle-mounted wireless equipment multi-communication standard field strength monitoring device as described in any one of claims 1-2 is arranged between the communication radio station and the vehicle-mounted antenna.

9. The vehicle-mounted wireless communication device according to claim 8, characterized in that: The field intensity monitoring device cyclically performs the following steps: Turn on the RF switch corresponding to the directional coupler used to monitor the downlink receiving field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the uplink transmitting field strength. MCU controls the RF IC to work in different downlink receiving frequency bands and reads the receiving field strength of the corresponding downlink frequency bands; Turn on the RF switch corresponding to the directional coupler used to monitor the uplink transmission field strength, and turn off the RF switch corresponding to the directional coupler used to monitor the downlink reception field strength. The MCU controls the RF IC to work in different uplink transmission frequency bands and reads the transmission field strength of the corresponding uplink frequency band.

10. The vehicle-mounted wireless communication device according to claim 9, characterized in that: The downlink receiving frequency bands of the radio frequency IC controlled by the MCU include: a downlink receiving frequency band of 400 MHz, a downlink receiving frequency band of 450 MHz, and a downlink receiving frequency band of 800 MHz; The uplink transmission frequency bands of the radio frequency IC controlled by the MCU include: an uplink transmission frequency band of 400 MHz, an uplink transmission frequency band of 450 MHz, and an uplink transmission frequency band of 800 MHz.

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