Multi-path direct-current power supply of high-frequency radio station

Abstract

The utility model discloses a multipath DC power supply of a high frequency radio station, comprising a power supply module and a voltage control module, the voltage control module comprises a buck-boost module, a negative voltage module and an isolation power supply module used for isolating and outputting power supply voltage and independently supplying power to a heat radiation fan motor, the isolation power supply module comprises a voltage stabilizing circuit, an isolation circuit and a driving control circuit. The power supply circuit not only can stably supply power to each module of the high-frequency radio station, but also can avoid mutual interference caused by signal crosstalk between power supply circuits.

Description

Technical Field

[0001] The utility model relates to the field of radio communication systems, in particular to a multi-channel direct current power supply for a high-frequency radio station. Background Art

[0002] High frequency radios are widely used. They can be used for broadcasting, radio demonstrations, shipping, air traffic control, government communications, etc. In addition, high frequency radios can also be used in the military field. In actual applications, the use of high frequency radios requires some technical adjustments and precautions. High frequency radios need to be adjusted in frequency when in use to ensure that there is no interference with signals from other radio stations.

[0003] The Chinese patent with application number "2020201112791" discloses a very high frequency radio adaptive interference suppression device and system. The very high frequency radio adaptive interference suppression device includes a power supply, a bandpass filter, an AD conversion unit, a preprocessing unit, a frequency conversion unit, a cancellation unit, a demodulation unit and a residual elimination unit; a system using the very high frequency radio adaptive interference suppression device includes a receiving device, the very high frequency radio adaptive interference suppression device, and an audio conversion device; another system using the very high frequency radio adaptive interference suppression device includes several receiving devices, a switching device, the very high frequency radio adaptive interference suppression device, and an audio conversion device. This technical solution uses digital adaptive interference suppression processing to achieve stronger interference suppression capabilities, improve the output voice signal-to-noise ratio of very high frequency radio stations in complex electromagnetic environments, and improve call quality. However, this technical solution only improves its interference suppression capabilities by making improvements on the basis of conventional circuit design of high frequency radio stations. However, in actual use, the problem of signal crosstalk interference between circuits on the integrated circuit has not been solved, especially the signal crosstalk interference between power supply circuits on the power control module of the radio station. Specifically, the interference signal generated by the heat dissipation device of the radio power supply will be connected to the entire circuit. The power supply of the high frequency radio station needs to power the radio station's transmitting module, terminal module, RF module and heat dissipation module. Each power supply control circuit will affect the transmission of the signal. How to reduce the crosstalk interference of the power control circuit to the signal is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-channel DC power supply for a high-frequency radio station, which can not only stably supply power to various modules of the high-frequency radio station, but also avoid signal crosstalk and mutual interference between power supply circuits, so as to solve the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A multi-channel DC power supply for a high-frequency radio station includes a power module and a voltage control module for processing the supply voltage of the power module, wherein the voltage control module includes a buck-boost module for performing buck-boost control on the supply voltage of the power module, a negative voltage module for performing feedback regulation on the supply voltage of the power module, and an isolated power supply module for isolating and outputting the supply voltage and independently supplying power to a cooling fan motor, wherein the isolated power supply module includes a voltage stabilizing circuit connected to the power module, an isolation circuit for isolating and stepping down the voltage of the voltage stabilizing circuit, and a drive control circuit connected to the voltage stabilizing circuit.

[0007] Furthermore, the isolation circuit includes an isolation transformer, a voltage stabilizing component and a cooling fan motor interface, the voltage stabilizing component is connected to the voltage output end of the isolation transformer, and the cooling fan motor interface is connected to the voltage output end of the voltage stabilizing component.

[0008] Furthermore, the voltage control module also includes a reverse connection protection circuit for protecting the circuit input in the voltage control module from overvoltage.

[0009] Furthermore, the power module includes a lithium battery module and an external power module, the power supply voltage range of the lithium battery module is 11.2V~16.8V, and the power supply voltage range of the external power module is 12V~25.2V.

[0010] Furthermore, the negative voltage module includes a regulating control circuit and a filtering circuit, and the filtering circuit is connected to a detection circuit for performing undervoltage detection on the voltage of the regulating control circuit.

[0011] Furthermore, the stable output voltage of the negative voltage module is -48V.

[0012] Furthermore, the stable output voltage of the isolated power supply module is 12V.

[0013] The beneficial effects of the utility model are as follows: the utility model performs a modular design of power supply control by dividing the voltage control module into a buck-boost module, a volt-voltage module and an isolated power supply module, distributes each control module according to power and digitalization, and especially performs a separate modular power supply for the cooling fan motor through the isolated power supply module, thereby achieving the purpose of reducing signal crosstalk interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural block diagram of a high-frequency radio multi-channel DC power supply provided by the utility model;

[0015] Figure 2 This is a circuit diagram of the isolated power supply module of the utility model;

[0016] Figure 3This is the circuit diagram of the buck-boost module of the utility model;

[0017] Figure 4 This is a circuit diagram of a negative voltage module of the utility model;

[0018] Figure 5 The utility model is a circuit diagram of a reverse connection protection circuit. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0020] The examples are as follows:

[0021] like Figures 1 to 5 The high-frequency radio multi-channel DC power supply shown includes a power module and a voltage control module for processing the power supply voltage of the power module. The voltage control module includes a buck-boost module for buck-boost control of the power supply voltage of the power module, a negative voltage module for feedback regulation of the power supply voltage of the power module, and an isolated power supply module for isolating the supply voltage and outputting it to supply power to the cooling fan motor separately.

[0022] Among them, Figure 1 As shown, the buck-boost module supplies power to the terminal module, RF module and receiving module of the high-frequency radio station respectively, the negative voltage module supplies power to the transmitting module of the high-frequency radio station, and the isolated power supply module supplies power to the cooling fan motor.

[0023] like Figure 2The isolated power supply module shown includes a voltage stabilizing circuit connected to a power supply module, an isolation circuit for isolating and reducing the voltage of the voltage stabilizing circuit, and a drive control circuit connected to the voltage stabilizing circuit. The isolation circuit includes an isolation transformer, a voltage stabilizing component, and a cooling fan motor interface. The voltage stabilizing component is connected to the voltage output end of the isolation transformer, and the cooling fan motor interface is connected to the voltage output end of the voltage stabilizing component. Specifically, U1 in the isolated power supply module is a stepper motor drive processor with model number MP6006GL. The voltage stabilizing component includes a voltage stabilizing diode DZ1, a resistor R2, a resistor R5, and a field effect transistor Q1 connected in parallel with the anode of the voltage stabilizing diode DZ1. The model of the field effect transistor Q1 is RC3P06. The model of the voltage regulator diode is BZT52C12S. The power module inputs voltage to the isolated power supply module separately through the peripheral circuit. The voltage connected to the power module can be 11.5V-16.8V or 17-25.2V. The connected voltage enters U1 through the voltage regulator component for control and adjustment. The 18th and 19th pins of U1 are connected in parallel with the power inductor L1 with model MPL-AT2512-100. The filtering effect of L1 reduces the interference of high-frequency signals, so that the stable DC power passes through the isolation transformer T1 with model FL-APM0011-EP7 to power the cooling fan motor interface. The stable output voltage of the isolated power supply module is 12V.

[0024] The use of isolation transformer T1 achieves full isolation of power and power supply, provides good isolation measures with the output voltage of other modules, and prevents the interference signal of the fan from entering the whole machine.

[0025] like Figure 3 In the buck-boost module shown, U6 is a power management chip of model MP4245GVE. As a special-purpose voltage stabilizer, the 11.5V-25.2V voltage connected to the power module is filtered through three sets of parallel capacitors C57, C58, and C59 and then connected to the VIN pin of U6. The 15V voltage is output stably through programming, and is sampled and controlled internally by the chip U6, and output at the SW1 pin of U6. After being filtered by L6, the output voltage is sampled by resistors R43, R45, and R47 and then sent to the FB pin of U6 for voltage regulation and control, so that the output voltage is always maintained at 15V.

[0026] like Figure 4The negative voltage module shown includes a regulation control circuit and a filter circuit. The filter circuit is connected to a detection circuit for undervoltage detection of the voltage of the regulation control circuit. Specifically, U2 in the negative voltage module is a high-efficiency synchronous buck converter with integrated power MOSFET of model MP4581GN. The 11.5V-25.2V voltage connected to the power module enters the main circuit through the potential control switches Q3 and Q4. Q3 and Q4 are both field effect transistors of model RC3P06. After internal regulation and control of U2, the voltage is output to the outside through the SW pin of U2, and then filtered by the power inductor L2 and parallel capacitors C21, C22, C23, and C24 before output. At the same time, the output voltage is sampled by resistors R18, R21, and R22 and sent to the FB pin of chip U2 for feedback regulation to ensure that the stable output voltage of the negative voltage module is -48V.

[0027] In addition, the power module input has two modes: lithium battery module and external power module. The supply voltage range of the lithium battery module is 11.2V~16.8V. The input mode of the external power module is adapter power supply or DC power supply. The supply voltage range of the external power module is 12V~25.2V.

[0028] As a technical solution of this embodiment, further, Figure 5 The voltage control module shown also includes a reverse protection circuit for protecting the circuit input in the voltage control module from overvoltage. Specifically, the control chip U7 of the reverse protection circuit is a controller with model MX50514D, and Q9 is a field effect transistor with model RC3P06. When the power supply of the entire module is normally input, U7 controls the potential control switch Q9 to be turned on normally, and outputs power to each module of the radio station. When the input is reversed, U7 samples abnormally and turns off the potential control switch Q9 to prevent a short circuit in the subsequent stage. U7 can shorten the turn-off time of the potential control switch Q9.

[0029] To sum up: the utility model performs a modular design of power supply control by dividing the voltage control module into a buck-boost module, a volt-voltage module and an isolated power supply module, distributes each control module according to power and digitalization, and especially performs a separate modular power supply for the cooling fan motor through the isolated power supply module, thereby achieving the purpose of reducing signal crosstalk interference.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-channel DC power supply for a high-frequency radio station, comprising a power module and a voltage control module for processing the supply voltage of the power module, characterized in that: The voltage control module includes a buck-boost module for buck-boosting the supply voltage of the power module, a negative voltage module for feedback-adjusting the supply voltage of the power module, and an isolated power supply module for isolating the supply voltage and outputting it to power the cooling fan motor separately. The isolated power supply module includes a voltage stabilizing circuit connected to the power module, an isolation circuit for isolating and stepping down the voltage of the voltage stabilizing circuit, and a drive control circuit connected to the voltage stabilizing circuit.

2. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The isolation circuit includes an isolation transformer, a voltage stabilizing component and a cooling fan motor interface. The voltage stabilizing component is connected to the voltage output end of the isolation transformer, and the cooling fan motor interface is connected to the voltage output end of the voltage stabilizing component.

3. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The voltage control module also includes a reverse connection protection circuit for protecting the circuit input in the voltage control module from overvoltage.

4. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The power module includes a lithium battery module and an external power module. The supply voltage range of the lithium battery module is 11.2V~16.8V, and the supply voltage range of the external power module is 12V~25.2V.

5. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The negative voltage module includes a regulating control circuit and a filtering circuit. The filtering circuit is connected to a detection circuit for performing undervoltage detection on the voltage of the regulating control circuit.

6. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The stable output voltage of the negative voltage module is -48V.

7. The high frequency radio multi-channel DC power supply according to claim 1, characterized in that: The stable output voltage of the isolated power supply module is 12V.

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