Ultrashort wave two-channel receiver

Abstract

The utility model discloses an ultrashort wave dual-channel receiver which comprises a shell and an upper cover, a cavity is formed in the shell, the upper cover covers the cavity, a substrate is arranged in the cavity, and a digital signal processing module is arranged on the substrate. The digital signal processing module comprises a power supply module, a main control module, a channel module, a clock module, an acquisition module and a calibration module which are sequentially arranged according to a digital signal processing line, one end, far away from the cavity, of the shell is provided with interfaces corresponding to the digital signal processing module, and the channel module comprises a first channel and a second channel; the first channel and the second channel have the same circuit connection; the base plate is arranged in the cavity, the base plate is convenient to carry by a user due to the conformal and miniaturized design of the structure, the portability and the flexibility of the whole equipment are improved, the base plate is directly connected with a direction-finding antenna base in an inverted buckling mode, a large number of lines are prevented from being erected manually, and the labor cost is saved; and a digital signal processing module is arranged on the substrate and is responsible for processing and analyzing signals, so that the design of miniaturization and low power consumption is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-short wave communication, in particular to an ultra-short wave dual-channel receiver. Background Art

[0002] Microwave communications have been developed after the integration of military and civilian industries. Efficient, reliable and miniaturized receivers have also become the strong players in the current field of special communications. Existing conventional direction-finding equipment usually adopts the method of separate deployment of direction-finding antennas and equipment in series in the entire system. This method is mostly used in fixed stations and vehicle-borne platforms. The equipment is installed indoors or in a cabin, which can reduce the environmental adaptability requirements of the equipment. In addition, the existing conventional lateral equipment is large in size and low in reliability, which affects its integration. For portable applications, it is necessary to carry a large number of cables for installation and removal in a preset environment, which not only affects the reliability of data transmission, but also increases manpower requirements. It cannot be applied to any different environment, and its flexibility and convenience are not high. In addition, most of the existing receivers are single-channel and can only be used for frequency sweep monitoring of signals, and its scope of application is limited. Utility Model Content

[0003] In order to solve the technical problems that the existing direction-finding equipment is not convenient, flexible, and has a limited scope of application, the present application provides an ultra-short wave dual-channel receiver.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is: an ultra-short wave dual-channel receiver, comprising a shell and an upper cover, the shell having a built-in cavity, and the upper cover covering the cavity, a substrate is arranged in the cavity, a digital signal processing module is arranged on the substrate, the digital signal processing module comprises a power module, a main control module, a channel module, a clock module, an acquisition module and a calibration module arranged in sequence according to the digital signal processing circuit, and an interface is provided at one end of the shell away from the cavity corresponding to the digital signal processing module, the channel module comprises a first channel and a second channel, and the circuit connection of the first channel and the second channel is the same.

[0005] As one of the optimized implementation schemes of the utility model, the channel module is used for filtering, frequency conversion, amplification, and outputting intermediate frequency signals; the clock module provides a local oscillator signal for the channel module and a sampling clock signal for the acquisition module; and the calibration module outputs a radio frequency signal.

[0006] As one of the optimized implementation schemes of the utility model, the interface is connected to the digital processing module and is provided with an interface processing circuit for controlling the digital processing module and returning status information.

[0007] As one of the optimized implementation schemes of the present utility model, the main control module is connected to the power supply module, and a temperature threshold is set in the main control module. If the ambient temperature obtained by the main control module is higher than the temperature threshold, the power supply module is controlled to disconnect; if the ambient temperature obtained by the main control module is lower than the temperature threshold, the power supply module operates normally.

[0008] As one of the optimized implementation schemes of the present utility model, if the ambient temperature obtained by the main control module is higher than the temperature threshold, the main control module controls the power module to disconnect until the ambient temperature is lower than the temperature threshold, and the power module resumes normal operation.

[0009] As one of the optimized implementation schemes of the present utility model, after the channel module is connected to the power module for thirty minutes, the phase difference drift in the channel module is less than 3° / h.

[0010] As one of the optimized implementation schemes of the utility model, a positioning structure is arranged on the cavity bottom of the cavity, a clearance opening is arranged on the substrate corresponding to the positioning structure, and the positioning structure is snap-connected with the clearance opening.

[0011] As one of the optimized implementation schemes of the utility model, the shell and the upper cover are correspondingly configured as regular tetradecagons.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: in the technical solution of the present application, the upper cover covers the cavity, which can not only ensure the sealing of the equipment, but also provide a stable working environment for the internal components. The substrate is arranged in the cavity, and its structural conformity and miniaturized design are convenient for users to carry, thereby improving the portability and flexibility of the overall equipment. It is directly connected to the direction-finding antenna base in an inverted manner, thereby avoiding the manual installation of a large number of lines and saving labor costs. A digital signal processing module is arranged on the substrate, which is responsible for processing and analyzing the signal, and each module in the digital signal processing module is arranged in sequence according to the digital signal processing circuit to jointly complete the signal processing process, that is, each functional module is constructed in a highly integrated processing method, and the cavity space is reasonably utilized to achieve a miniaturized and low-power design. Among them, the power supply module provides a stable power supply; the main control module realizes the control of each other according to the preset program and algorithm. The module schedules and coordinates the modules, and can realize the function of reporting status information, which is convenient for real-time feedback of data information; the channel module is responsible for data transmission and processing, and the circuit connection mode of the first channel and the second channel is the same, which can realize the same data processing, improve the compatibility and flexibility of the receiver, and expand the scope of application; the clock module can provide an accurate time reference, and ensure the working rhythm and synchronization of each module of the digital signal processing module by generating, controlling and synchronizing the clock signal; the acquisition module is responsible for collecting and converting real-time signals, converting analog signals into digital signals, which is convenient for subsequent digital signal processing; the calibration module calibrates the signal, and ensures its performance stability and accuracy under various working conditions by adjusting and optimizing the overall parameters of the receiver; and the interface arranged on the shell is used for the command of the corresponding digital signal processing module, tuning each functional module, and returning the status information of each module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 It is an exploded diagram of the ultrashort wave dual-channel receiver provided by the first embodiment of the utility model.

[0015] Figure 2 This is a circuit principle block diagram of an ultrashort wave dual-channel receiver provided by the first embodiment of the utility model.

[0016] In the figure:

[0017] 1. Ultra-short wave dual-channel receiver;

[0018] 10. Shell; 11. Upper cover; 12. Cavity; 13. Base plate; 14. Digital signal processing module; 15. Interface; 16. Positioning structure; 17. Yield opening. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Please combine Figure 1 and Figure 2 A first embodiment of the utility model provides an ultrashort wave dual-channel receiver 1, comprising a shell 10 and an upper cover 11, the shell 10 has a built-in cavity 12, and the upper cover 11 covers the cavity 12, a substrate 13 is arranged in the cavity 12, a digital signal processing module 14 is arranged on the substrate 13, the digital signal processing module 14 comprises a power module, a main control module, a channel module, a clock module, an acquisition module and a calibration module arranged in sequence according to a digital signal processing circuit, and an interface 15 is arranged at one end of the shell 10 away from the cavity 12 corresponding to the digital signal processing module 14, the channel module comprises a first channel and a second channel, and the circuit connection of the first channel and the second channel is the same.

[0026] As an optional implementation, the housing 10 and the upper cover 11 are both designed to be rainproof, so that the receiver has a protection level suitable for use in outdoor environments.

[0027] Furthermore, the shell 10 and the upper cover 11 are correspondingly arranged as a regular tetradecagon. In terms of structural commonality design, the regular tetradecagon is directly connected to the base of the direction-finding antenna in an inverted manner. It can be explained that each vertex of the regular tetradecagon is evenly distributed, and more vertex distributions can be achieved, which enables the direction-finding antenna to receive and send signals evenly in all directions. The direction-finding antenna has a higher transmission efficiency in the same space, which makes the antenna have higher stability and anti-interference ability when dealing with complex environments, thereby improving the communication quality.

[0028] As an optional implementation, the diameter × height of the ultra-short wave dual-channel receiver 1 is less than and equal to 240 mm × 70 mm, and its weight is less than and equal to 4 kg; preferably, the diameter × height of the ultra-short wave dual-channel receiver 1 is 240 mm × 70 mm, and the weight is 3.3 kg.

[0029] Furthermore, the channel module is used for filtering, frequency conversion, amplification, and outputting intermediate frequency signals; the clock module provides a local oscillator signal for the channel module and a sampling clock signal for the acquisition module; and the calibration module outputs a radio frequency signal.

[0030] Furthermore, the interface 15 is connected to the digital processing module and is provided with an interface 15 processing circuit for controlling the digital processing module and returning status information.

[0031] As an optional implementation, the power module provides a stable power supply for the entire receiver to ensure the normal operation of the receiver. It has overvoltage, overcurrent, and overtemperature protection to improve the feasibility of the entire circuit operation.

[0032] It is explained that the main control module is responsible for controlling the operation of the entire receiver and realizing signal processing and analysis. The channel module is responsible for receiving and sending RF signals and realizing filtering, frequency conversion and signal amplification between channels to output intermediate frequency signals. The clock module provides local oscillator signals for the channel modules and sampling clock signals for the acquisition module to ensure signal accuracy. The acquisition module is responsible for collecting and preprocessing signals to provide a basis for subsequent signal processing. The calibration module regularly calibrates the receiver to ensure the stability and accuracy of signal processing and outputs RF signals. The interface 15 processing circuit responds to the control commands of the digital signal processing module 14, tunes each functional module, and returns the status information of each module.

[0033] Furthermore, after the channel module is connected to the power module for thirty minutes, the phase difference drift in the channel module is less than 3° / h.

[0034] It is explained that the phase difference refers to the phase difference between voltage and current, which is used to measure the power transmission effect; when the channel module and the power module are stably connected, the phase difference drift in the channel module will be significantly reduced, and the phase difference drift is less than 3° / h, indicating that the connectivity between the channel module and the power module is good, which can meet the needs of power transmission and ensure the efficiency and stability of power transmission.

[0035] As an optional implementation, the frequency range of the ultrashort wave dual-channel receiver 1 is controlled to be 20MHz to 3600MHz, the isolation of the channel module is greater than and equal to 60dB, the comb spectrum frequency interval is 500kHz, and the power consumption is less than and equal to 25W; preferably, during the operation of the ultrashort wave dual-channel receiver 1, its frequency range is 20MHz to 3600MHz, the isolation of the channel module is 65dB, the comb spectrum frequency interval is 500kHz, and the power consumption is 18W.

[0036] It can be understood that in the technical solution of the present application, the upper cover 11 covers the cavity 12, which can not only ensure the sealing of the equipment, but also provide a stable working environment for the internal components. The substrate 13 is arranged in the cavity 12. Its structural conformity and miniaturized design are convenient for users to carry, which improves the portability and flexibility of the overall equipment. It is directly connected to the base of the direction-finding antenna in an inverted manner, which avoids the artificial installation of a large number of lines and saves labor costs. A digital signal processing module 14 is arranged on the substrate 13, which is responsible for processing and analyzing the signal, and each module in the digital signal processing module 14 is arranged in sequence according to the digital signal processing circuit to jointly complete the signal processing process, that is, a highly integrated processing method is adopted to construct each functional module, and the space of the cavity 12 is reasonably utilized to achieve a miniaturized and low-power design. Among them, the power supply module provides a stable power supply; the main control module realizes the control of other modules according to the preset program and algorithm. Scheduling and coordination, and can realize the function of reporting status information, which is convenient for real-time feedback of data information; the channel module is responsible for data transmission and processing, and the circuit connection mode of the first channel and the second channel is the same, which can realize the same processing of data, improve the compatibility and flexibility of the receiver, and expand the scope of application; the clock module can provide an accurate time reference, and through the generation, control and synchronization of the clock signal, ensure the working rhythm and synchronization of each module of the digital signal processing module 14; the acquisition module is responsible for collecting and converting real-time signals, converting analog signals into digital signals, which is convenient for subsequent digital signal processing; the calibration module calibrates the signal, and through the adjustment and optimization of the overall parameters of the receiver, ensures its performance stability and accuracy under various working conditions; and the interface 15 arranged on the shell 10 is used to respond to the command of the digital signal processing module 14, tune each functional module, and return the status information of each module.

[0037] Furthermore, the main control module is connected to the power supply module, and a temperature threshold is set in the main control module. If the ambient temperature obtained by the main control module is higher than the temperature threshold, the power supply module is controlled to disconnect; if the ambient temperature obtained by the main control module is lower than the temperature threshold, the power supply module operates normally.

[0038] Furthermore, if the ambient temperature acquired by the main control module is higher than the temperature threshold, the main control module controls the power module to be disconnected until the ambient temperature is lower than the temperature threshold, and the power module resumes normal operation.

[0039] It is explained that the temperature threshold is set in the main control module to ensure that the receiver operates at a suitable ambient temperature, to prevent damage to the receiver due to excessively high or low temperature, and to improve the stability of the entire device operation; when the ambient temperature detected by the main control module is higher than the set temperature threshold, an instruction is issued to control the power module to disconnect to prevent damage to the power module caused by the high temperature environment; conversely, if the ambient temperature detected by the main control module is lower than the temperature threshold, the power module is allowed to operate normally to ensure the normal use of the equipment.

[0040] In addition, when the main control module detects that the ambient temperature is continuously higher than the temperature threshold, it will continue to control the power module to disconnect until the ambient temperature drops below the temperature threshold. At this time, the power module resumes normal operation, which can ensure that the receiver can operate stably under various environmental conditions, extend the service life of the receiver, and improve its operating performance.

[0041] Furthermore, a positioning structure 16 is provided on the bottom of the cavity 12, and a clearance opening 17 is provided on the substrate 13 corresponding to the positioning structure 16. The positioning structure 16 is snap-fitted with the clearance opening 17. This arrangement enables the substrate 13 to be accurately and firmly set in the cavity 12, thereby preventing unstable circuit transmission during operation and affecting the stability of data transmission.

[0042] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ultra-short wave dual-channel receiver, characterized in that: The invention comprises a shell and an upper cover, wherein the shell has a built-in cavity, and the upper cover covers the cavity, a substrate is arranged in the cavity, a digital signal processing module is arranged on the substrate, the digital signal processing module comprises a power module, a main control module, a channel module, a clock module, an acquisition module and a calibration module which are arranged in sequence according to a digital signal processing circuit, and an interface is arranged at one end of the shell away from the cavity corresponding to the digital signal processing module, and the channel module comprises a first channel and a second channel, and the circuit connection of the first channel and the second channel is the same.

2. The ultrashort wave dual-channel receiver as claimed in claim 1, characterized in that: The channel module is used for filtering, frequency conversion, amplification, and outputting an intermediate frequency signal; the clock module provides a local oscillator signal for the channel module and a sampling clock signal for the acquisition module; and the calibration module outputs a radio frequency signal.

3. The ultrashort wave dual-channel receiver as claimed in claim 2, characterized in that: The interface is connected to the digital processing module and is provided with an interface processing circuit for controlling the digital processing module and returning status information.

4. The ultrashort wave dual-channel receiver as claimed in claim 1, characterized in that: The main control module is connected to the power module, and a temperature threshold is set in the main control module. If the ambient temperature obtained by the main control module is higher than the temperature threshold, the power module is controlled to be disconnected; if the ambient temperature obtained by the main control module is lower than the temperature threshold, the power module operates normally.

5. The ultrashort wave dual-channel receiver as claimed in claim 4, characterized in that: If the ambient temperature acquired by the main control module is higher than the temperature threshold, the main control module controls the power module to be disconnected until the ambient temperature is lower than the temperature threshold, and the power module resumes normal operation.

6. The ultrashort wave dual-channel receiver as claimed in claim 1, characterized in that: After the channel module is connected to the power module for thirty minutes, the phase difference drift in the channel module is less than 3° / h.

7. The ultrashort wave dual-channel receiver as claimed in claim 1, characterized in that: A positioning structure is arranged on the cavity bottom of the cavity, a clearance opening is arranged on the substrate corresponding to the positioning structure, and the positioning structure is clamped with the clearance opening.

8. The ultrashort wave dual-channel receiver as claimed in claim 1, characterized in that: The shell and the upper cover are correspondingly arranged in a regular tetradecagon.

Images