Frequency signal switching shunt device based on domestic platform
By designing frequency signal switching split devices based on the domestic platform, using domestic components and module combinations, the problem of restriction of imported components in domestic equipment is solved, and high isolation and wide application are achieved.
Patent Information
- Application Number
- CN202422096813.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-28
AI Technical Summary
There are a large number of imported components in domestic frequency signal switching split devices, which are difficult to meet the requirements of independent control, and limit the use scenarios.
A frequency signal switching split device based on the domestic platform is designed, using domestic components, including power supply filters, power modules, frequency signal switching split modules and indicator light boards. Through the combination of input switching modules, signal split modules, signal output modules and signal detection modules, signal switching and splitting are realized.
It fills the gap in this field in China, improves signal isolation, is simple and easy to implement, and expands the application space.
Smart Images
Figure CN223040015U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of frequency signal splitting, in particular to a frequency signal switching and splitting device based on a domestic platform. Background Art
[0002] The input of the frequency signal switching and splitting device is multiple frequency signals, and one of the frequency signals can be selected for splitting output to meet the user's demand for multiple synchronous frequency signals, with a wide range of applications.
[0003] However, there are a large number of imported components in current domestic related products, which do not meet the requirements of self-control and controllability, resulting in limited usage scenarios. Therefore, developing a frequency signal switching and splitting device based on a domestic platform has a broader application space. Summary of the Utility Model
[0004] In view of this, the utility model proposes a frequency signal switching and splitting device based on a domestic platform. This device fills the domestic gap in this field, and has high signal isolation degree inside the device, and the device structure is simple and easy to implement.
[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0006] A frequency signal switching and splitting device based on a domestic platform includes a power filter, a power supply module, a frequency signal switching and splitting module, and an indicator board;
[0007] The power input port of the power filter receives external 220V alternating current, and the power output port of the power filter is connected to the power input port of the power supply module; the power output port of the power supply module is connected to the power input port of the frequency signal switching and splitting module;
[0008] The frequency signal switching and splitting module includes N signal input ports, M signal output ports, and N + M signal status output ports;
[0009] The N signal input ports of the frequency signal switching and splitting module respectively receive an external frequency input signal, and the M signal output ports of the frequency signal switching and splitting module all output a split output signal of the same external frequency input signal;
[0010] The indicator board includes N + M indicators, each indicator has a signal status input port, and the signal status input ports of the indicator board are connected to the signal status output ports of the frequency signal switching and splitting module in a one-to-one correspondence.
[0011] Further, the frequency signal switching and splitting module includes an input switching module, a signal splitting module, a signal output module, and a signal detection module;
[0012] The input switching module includes a plurality of switching switches, and the plurality of switching switches form a binary tree structure, receiving N external frequency input signals and outputting one of the external frequency input signals; each switching switch has two signal input ports and one signal output port. For the switching switch directly connected to the external frequency input signal, its two signal input ports respectively receive an external frequency input signal and a GND signal, and the signal output port outputs one of the signals; the two signal input ports of the remaining switching switches receive the outputs of the two switching switches connected to them.
[0013] The signal splitting module includes a first-stage signal splitting circuit and M second-stage signal splitting circuits; the first-stage signal splitting circuit and the second-stage signal splitting circuit have the same structure, and both include a driving and amplifying chip and a power supply chip.
[0014] The power input port of the power supply chip is the power input port of the frequency signal switching and splitting module, connected to the power output port of the power supply module, and the power output port of the power supply chip is connected to the power input port of the driving and amplifying chip.
[0015] For each first-stage signal splitting circuit, the signal input port of its driving and amplifying chip receives the output of the input switching module; for the c-th first-stage signal splitting circuit, the signal output port of its driving and amplifying chip is connected to the signal input ports of the driving and amplifying chips in b c second-stage signal splitting circuits, where c = 1, 2, 3,..., a.
[0016] The signal output module includes M signal output circuits, and the signal output circuits are connected to the second-stage signal splitting circuits in a one-to-one correspondence; each signal output circuit includes a filtering circuit and a π attenuation circuit. The signal input port of the filtering circuit is connected to the signal output port of the driving and amplifying chip in the second-stage signal splitting circuit, the signal output port of the filtering circuit is connected to the signal input port of the π attenuation circuit, and the signal output port of the π attenuation circuit is the signal output port of the frequency signal switching and splitting module, outputting the frequency signal split output signal.
[0017] The signal detection module includes N + M signal input ports and N + M signal status output ports. The N + M signal input ports of the signal detection module respectively receive N external frequency input signals and M frequency signal split output signals, and the signal status output port of the signal detection module is the signal status output port of the frequency signal switching and splitting module.
[0018] Due to the adoption of the above technical solution, the beneficial effects of the present utility model compared with the prior art are as follows:
[0019] 1. The utility model first proposes a frequency signal switching and splitting device based on a domestic platform, filling the gap in this field.
[0020] 2. Through the design of the overall structure of the input switching module in the utility model, different external frequency input signals are not in the same switching switch, avoiding interference between input signals and improving the signal isolation degree.
[0021] 3. The filter circuit in the utility model is designed as a general topology structure. By configuring different resistors and capacitors, frequency signals at different frequency points can be filtered, having a certain expandability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of the frequency signal switching and splitting device based on a domestic platform in the embodiment of the utility model.
[0023] Figure 2 is Figure 1 a schematic structural diagram of the frequency signal switching and splitting module in
[0024] Figure 3 and Figure 4 is Figure 2 two of the schematic structural diagrams of the input switching module in
[0025] Figure 5 is Figure 2 a schematic structural diagram of the signal splitting module in this embodiment in
[0026] Figure 6 is Figure 2 a schematic structural diagram of the signal output module in this embodiment in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The following further describes the content of the utility model in conjunction with the drawings and specific embodiments.
[0028] A frequency signal switching and splitting device based on a domestic platform, as Figure 1 shown, includes a power filter, a power supply module, a frequency signal switching and splitting module, and an indicator board;
[0029] Specifically, in this embodiment, the power filter, the power supply module, the frequency signal switching and splitting module, and the indicator board are installed inside the chassis housing, and an external interface of the frequency signal switching and splitting device is installed on the chassis housing;
[0030] The power input port of the power filter receives external 220V alternating current, and the power output port of the power filter is connected to the power input port of the power supply module; the power output port of the power supply module is connected to the power input port of the frequency signal switching and splitting module;
[0031] Specifically, in this embodiment, the power filter is the FLHE83M-3A of Beijing Zhongshi Zhengqi Co., Ltd.; the power module is the customized power supply CETC54-LSP54-2G of Chaoyang Power Supply Co., Ltd.
[0032] The frequency signal switching and splitting module includes N signal input ports, M signal output ports, and N+M signal status output ports;
[0033] The N signal input ports of the frequency signal switching and splitting module respectively receive an external frequency input signal, and the M signal output ports of the frequency signal switching and splitting module all output a split output signal of the same external frequency input signal;
[0034] Specifically, in this embodiment, N is 2 and M is 16;
[0035] The indicator board includes N+M indicators, each indicator has a signal status input port, and the signal status input ports of the indicator board are connected to the signal status output ports of the frequency signal switching and splitting module in a one-to-one correspondence.
[0036] Specifically, in this embodiment, the indicators on the indicator board are the KTR-F5G-LC of Shenzhen Kete Ling Technology Co., Ltd.
[0037] Further, as Figure 2 shown, the frequency signal switching and splitting module includes an input switching module, a signal splitting module, a signal output module, and a signal detection module;
[0038] The input switching module includes multiple switching switches, and the multiple switching switches form a binary tree structure, receiving N external frequency input signals and outputting one of the external frequency input signals; each switching switch has two signal input ports and one signal output port. For the switching switch directly connected to the external frequency input signal, its two signal input ports respectively receive an external frequency input signal and a GND signal, and the signal output port outputs one of the signals; the two signal input ports of the remaining switching switches receive the outputs of the two switching switches connected to them;
[0039] Specifically, as Figure 3As shown, in this embodiment, there are two frequency input signals, namely A and B. The first stage of the input switching module includes two switching switches, which receive the two frequency input signals of A and B. The second stage includes one switching switch, which is used to output one of the frequency input signals of A and B. The switching switches of the input switching module are selected as HFD4 / 5 of Suzhou Inovance Company. When the A-channel input signal is selected, the two switching switches in the first stage respectively output the A-channel input signal and GND, and the switching switch in the second stage outputs the A-channel input signal. When the B-channel input signal is selected, the two switching switches in the first stage respectively output GND and the B-channel input signal, and the switching switch in the second stage outputs the B-channel input signal. In this way, after the switching of the first-stage switching switches, only one input signal remains, avoiding the interference of the other input signal and improving the isolation degree of the input signal.
[0040] In addition, as Figure 4 shown, for the input switching module corresponding to the three frequency input signals of A, B, and C, the first stage of the input switching module includes three switching switches, which receive the three frequency input signals of A, B, and C. The second stage includes one switching switch, which is used to output one of the frequency input signals of A and B. The third stage includes one switching switch, which is used to output one of the frequency input signals of A, B, and C.
[0041] From the above two structures, the structure of the input switching module corresponding to multiple frequency input signals can be analogized, that is, multiple switching switches form a binary tree structure, which receives N external frequency input signals and outputs one of the external frequency input signals.
[0042] The signal splitting module includes a first-stage signal splitting circuits and M second-stage signal splitting circuits. The first-stage signal splitting circuits and the second-stage signal splitting circuits have the same structure, and both include a driving and amplifying chip and a power supply chip.
[0043] The power input port of the power supply chip is the power input port of the frequency signal switching and splitting module, which is connected to the power output port of the power supply module. The power output port of the power supply chip is connected to the power input port of the driving and amplifying chip.
[0044] For each first-stage signal splitting circuit, the signal input port of its driving and amplifying chip receives the output of the input switching module. For the c-th first-stage signal splitting circuit, the signal output port of its driving and amplifying chip is connected to the signal input port of the driving and amplifying chip in b c second-stage signal splitting circuits, where c = 1, 2, 3,......, a.
[0045] Specifically, as Figure 5As shown in the figure, in this embodiment, it includes 4 first-stage signal splitting circuits, and each first-stage signal splitting circuit is connected to 4 second-stage signal splitting circuits. The two-stage signal splitting circuits can avoid too low amplitude of the output signal. The driving and amplifying chip selects the SGM7SZ04YN5G chip of Sigmund Microelectronics, and the power supply chip selects the ME6211C33M5G chip of Winbond Electronics. Each signal splitting circuit is powered by an independent power supply chip, which can reduce the influence of power supply ripple on the phase noise of the frequency signal.
[0046] As Figure 6 shown, the signal output module includes M signal output circuits, and the signal output circuits are connected to the second-stage signal splitting circuits in one-to-one correspondence. Each signal output circuit includes a filtering circuit and a π attenuation circuit. The signal input port of the filtering circuit is connected to the signal output port of the driving and amplifying chip in the second-stage signal splitting circuit, the signal output port of the filtering circuit is connected to the signal input port of the π attenuation circuit, and the signal output port of the π attenuation circuit is the signal output port of the frequency signal switching and splitting module, and the output frequency signal is split and output.
[0047] Specifically, in this embodiment, the filtering circuit is designed as a general topology structure. By configuring different resistors and capacitors, frequency signals of different frequency points can be filtered. At the same time, by configuring different resistance values in the π attenuation circuit, the attenuation value of the π attenuation circuit can be adjusted, and then the power value of the frequency signal output by the frequency signal switching and splitting device can be adjusted.
[0048] The signal detection module includes N + M signal input ports and N + M signal status output ports. The N + M signal input ports of the signal detection module respectively receive N external frequency input signals and M frequency signal split output signals, and the signal status output port of the signal detection module is the signal status output port of the frequency signal switching and splitting module.
[0049] Specifically, in this embodiment, the signal detection module is a single-chip microcomputer, and the product GD32F450VKT6 of GigaDevice is selected. The N external frequency input signals and the M frequency signal split output signals are all connected to the IO ports of the single-chip microcomputer. The single-chip microcomputer can detect the signal status and indicate the status of one signal through the indicator board. The indicator light on indicates that the signal of this path is normal, and the indicator light off indicates that the signal of this path is abnormal.
[0050] The working principle of this embodiment is as follows:
[0051] The power filter is directly connected to 220V alternating current, filters and stabilizes the input 220V alternating current and then outputs it to the power supply module.
[0052] The power supply module converts the filtered 220V alternating current into low-voltage direct current and outputs it to the frequency signal switching and splitting module.
[0053] The frequency signal switching and splitting module has two input frequency signals and can select to split and output one of the frequency signals.
[0054] The indicator board indicates the status of the frequency signals for each input and split output. When the light is on, it means the frequency signal of this path is normal; when the light is off, it means the frequency signal of this path is abnormal.
[0055] The frequency signal switching and splitting module includes an input switching module, a signal splitting module, a signal output module, and a signal detection module. Among them,
[0056] The input switching module selects and switches the two input frequency signals and outputs one frequency signal to the signal splitting module.
[0057] The signal splitting module splits the selected and switched frequency signal into 16 paths, amplifies it, and then outputs it to the signal output module.
[0058] The signal output module filters and π - attenuates the split and amplified signal and then outputs the final signal. The filter circuit is designed as a general topology structure. By configuring different resistors and capacitors, frequency signals of different frequency points can be filtered.
[0059] The signal detection module detects the status of the frequency signals for each input and split output, and controls the lighting and extinguishing of the corresponding indicator lights on the indicator board. When the light is on, it means the frequency signal of this path is normal; when the light is off, it means the frequency signal of this path is abnormal.
[0060] In summary, the present utility model proposes a frequency signal switching and splitting device based on a domestic platform, filling the domestic gap in this field; through the design of the overall structure of the input switching module, different external frequency input signals are not in the same switching switch, avoiding interference between input signals and improving the signal isolation degree; the filter circuit is designed as a general topology structure. By configuring different resistors and capacitors, frequency signals of different frequency points can be filtered, and the device has a simple structure and is easy to implement.
[0061] Those skilled in the art will realize that the described embodiments are to help readers understand the principles of the present utility model, and it should be understood that the protection scope of the present utility model is not limited to the described embodiments. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.
Claims
1. A frequency signal switching and branching device based on a domestic platform, characterized in that: It includes a power filter, a power module, a frequency signal switching branch module and an indicator light board; The power input port of the power filter receives external 220V AC power, and the power output port of the power filter is connected to the power input port of the power module; the power output port of the power module is connected to the power input port of the frequency signal switching shunt module; The frequency signal switching branch module includes N signal input ports, M signal output ports and N+M signal state output ports; The N signal input ports of the frequency signal switching branch module receive one external frequency input signal respectively, and the M signal output ports of the frequency signal switching branch module output branch output signals of the same external frequency input signal; The indicator light board includes N+M indicator lights, each indicator light has a signal state input port, and the signal state input port of the indicator light board is connected to the signal state output port of the frequency signal switching branch module in a one-to-one correspondence.
2. According to claim 1, a frequency signal switching and branching device based on a domestic platform is characterized in that: The frequency signal switching branch module includes an input switching module, a signal branch module, a signal output module and a signal detection module; The input switching module includes a plurality of switching switches, which form a binary tree structure, receive N external frequency input signals, and output one of the external frequency input signals; each switching switch has two signal input ports and one signal output port, and the switching switch directly connected to the external frequency input signal has two signal input ports that receive one external frequency input signal and a GND signal, respectively, and a signal output port that outputs one of the signals; The two signal input ports of the remaining switching switches receive the outputs of the two switching switches connected thereto; The signal branching module includes a first-stage signal branching circuit and M second-stage signal branching circuits; the first-stage signal branching circuit and the second-stage signal branching circuit have the same structure, and both include a driving amplifier chip and a power supply chip; The power input port of the power supply chip is the power input port of the frequency signal switching shunt module, which is connected to the power output port of the power module, and the power output port of the power supply chip is connected to the power input port of the driving amplifier chip; For each first-stage signal shunt circuit, the signal input port of the driving amplifier chip receives the output of the input switching module; for the cth first-stage signal shunt circuit, the signal output port of the driving amplifier chip is connected to b c The signal input port of the driving amplifier chip in the second-stage signal branch circuit, c = 1, 2, 3, ..., a, The signal output module includes M signal output circuits, and the signal output circuits are connected to the second-stage signal shunt circuits in a one-to-one correspondence; each signal output circuit includes a filter circuit and a π decay circuit, the signal input port of the filter circuit is connected to the signal output port of the driving amplifier chip in the second-stage signal shunt circuit, the signal output port of the filter circuit is connected to the signal input port of the π decay circuit, and the signal output port of the π decay circuit is the signal output port of the frequency signal switching shunt module, and outputs the frequency signal shunt output signal; The signal detection module includes N+M signal input ports and N+M signal state output ports. The N+M signal input ports of the signal detection module respectively receive N external frequency input signals and M frequency signal branch output signals. The signal state output port of the signal detection module is the signal state output port of the frequency signal switching branch module.