Power distribution box and RIU testing device of airborne electromechanical system

Abstract

The utility model discloses a power supply distribution box and an airborne electromechanical system RIU test device. The power supply distribution box comprises a switching circuit, a power supply monitoring circuit and a main controller. According to the utility model, the main controller controls the switching circuit to switch and output the power supply and / or the power supply according to the power supply control signal sent by the program control terminal, so that the flexibility of power supply distribution is improved, and the RIU test efficiency is improved; and the main controller is used for controlling the on-off of the switching circuit according to the power supply parameter signal, so that the reliability of the RIU test is improved, the specific power supply requirements of different RIU modules are met, and the accuracy of the RIU test result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to airborne electromechanical system RIU test technical field especially relates to a power distribution box and airborne electromechanical system RIU testing device. BACKGROUND

[0002] In the RIU (Remote Interface Unit) test work of airborne electromechanical system, stable, reliable and independent working power supply and power supply for a plurality of different types of RIU modules or a plurality of power supply channels of the same RIU module are needed to ensure the accuracy and effectiveness of the test. However, the existing power distribution means has many drawbacks, such as poor stability of power supply, insufficient flexibility of distribution, difficulty in meeting the specific power supply requirements of different RIU modules, etc., which affects the results and efficiency of RIU test. SUMMARY

[0003] The main purpose of the utility model is to provide a power distribution box, which aims to solve the problem of poor stability of power supply, insufficient flexibility of distribution, difficulty in meeting the specific power supply requirements of different RIU modules, etc. of the existing power distribution means, which affects the results and efficiency of RIU test.

[0004] In order to achieve the above purpose, the utility model provides a power distribution box applied to airborne electromechanical system RIU testing device, which comprises:

[0005] Switching circuit, the switching circuit is used for switching output program-controlled power supply, and the program-controlled power supply includes power supply and power supply;

[0006] Power monitoring circuit, the power monitoring circuit is used for monitoring the power parameters of the program-controlled power supply and outputting the corresponding power monitoring signal;

[0007] Main controller, the input end of the main controller is connected with the power monitoring circuit, the control end of the main controller is connected with the switching circuit, and the main controller is also connected with the program-controlled terminal to establish communication connection, the main controller is used for receiving the power control signal sent by the program-controlled terminal, and the switching circuit is switched to output the power supply and / or power supply according to the power control signal; also used for controlling the switching circuit according to the power monitoring signal on / off.

[0008] In an embodiment, the switching circuit includes a plurality of single-pole single-throw switches.

[0009] In an embodiment, the power supply monitoring circuit comprises a current detection circuit, a detection end of the current detection circuit is arranged at the second end of the switching circuit, the current detection circuit is connected with the main controller, and the current detection circuit is used for detecting the current flowing through the switching circuit and outputting a corresponding current detection signal.

[0010] The main controller is used for controlling the switching circuit to work according to the current detection signal.

[0011] In an embodiment, the power supply monitoring circuit further comprises a voltage detection circuit, a detection end of the voltage detection circuit is arranged at the first end of the switching circuit, the voltage detection circuit is connected with the main controller, and the voltage detection circuit is used for detecting the voltage output by the program-controlled power supply and outputting a corresponding voltage detection signal.

[0012] The main controller is used for controlling the switching circuit to work according to the voltage detection signal.

[0013] In an embodiment, the power distribution box further comprises an indication circuit, a controlled end of the indication circuit is connected with the main controller, and the indication circuit is used for indicating the state of the program-controlled power supply.

[0014] The main controller is used for controlling the indication circuit to work according to the current detection signal and the voltage detection signal.

[0015] In an embodiment, the indication circuit comprises a double-color state lamp.

[0016] In an embodiment, the power distribution box further comprises:

[0017] A fan module, a controlled end of the fan module is connected with the main controller.

[0018] A temperature detection circuit, a detection end of the temperature detection circuit is arranged in the power distribution box, an output end of the temperature detection circuit is connected with the main controller, and the temperature detection circuit is used for detecting the temperature in the power distribution box and outputting a corresponding temperature detection signal.

[0019] The main controller is used for adjusting the rotating speed of the fan module according to the temperature detection signal.

[0020] The utility model discloses a kind of airborne electromechanical system RIU testing devices, the airborne electromechanical system RIU testing device includes the power distribution box described above.

[0021] The utility model has the advantages that:

[0022] The power distribution box controls the switching circuit to switch the output power supply and / or power supply through the main controller according to the power control signal sent by the program control terminal, so as to improve the flexibility of power distribution, thereby improving the RIU test efficiency; and the main controller controls the on-off of the switching circuit according to the power parameter signal, so as to improve the reliability of the RIU test, thereby meeting the specific power supply requirements of different RIU modules, and ensuring the accuracy of the RIU test results. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an overall block diagram of the power distribution box of the utility model;

[0024] Figure 2 It is a module schematic diagram of the power switching circuit of the power distribution box of the utility model;

[0025] Figure 3 It is a module schematic diagram of the current detection circuit of the power distribution box of the utility model;

[0026] Figure 4 It is a module schematic diagram of the voltage detection circuit of the power distribution box of the utility model;

[0027] Figure 5 It is a front side view of the power distribution box of the utility model;

[0028] Figure 6 It is a back side view of the power distribution box of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.

[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the testing of airborne electromechanical systems (RIUs), it is necessary to provide stable, reliable, and independent operating and power supplies for multiple different types of RIU modules or multiple power supply channels of the same RIU module to ensure the accuracy and effectiveness of the test. However, existing power distribution methods suffer from poor power stability, insufficient distribution flexibility, and difficulty in meeting the specific power requirements of different RIU modules, thus affecting the results and efficiency of RIU testing.

[0036] To address the aforementioned problems, this invention proposes a power distribution box for use in an airborne electromechanical system RIU testing device. The specific embodiments of this invention will be described in detail below with reference to the accompanying drawings.

[0037] like Figures 1-6 As shown, the power distribution box includes:

[0038] A switching circuit, wherein the switching circuit is used to switch the output programmable power supply, the programmable power supply including a power supply and a power supply;

[0039] A power monitoring circuit is used to monitor the power parameters of the programmable power supply and output corresponding power monitoring signals.

[0040] A main controller, an input end of the main controller is connected with the power supply monitoring circuit, a control end of the main controller is connected with the switching circuit, the main controller is further connected with a program control terminal to establish a communication connection, the main controller is used for receiving a power supply control signal sent by the program control terminal, and the switching circuit is controlled to switch the output of the power supply and / or power supply according to the power supply control signal; and is further used for controlling the switching of the switching circuit according to the power supply monitoring signal.

[0041] In an embodiment, the switching circuit includes a plurality of single-pole single-throw switches.

[0042] In the embodiment, the switching circuit can be implemented by any switching circuit capable of switching the output of the power supply and / or power supply, for example, a single-pole single-throw switch; the program control power supply can be provided with 4 DC 25A / 28V power supplies and 24 power supplies, accordingly, 4 single-pole single-throw switches are required to be connected with the 4 power supplies one by one, and 24 single-pole single-throw switches are required to be connected with the 24 power supplies one by one, and the number of power supplies and power supplies and the number of single-pole single-throw switches can also be set according to actual conditions.

[0043] In the embodiment, the main controller can be implemented by an MCU, a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array) or an SOC (System On Chip), and the main controller is connected with the program control terminal through Ethernet, that is, the program control terminal sends a corresponding power supply control signal to the main controller according to the RIU test requirement, and the main controller controls the switching circuit to switch the output of the power supply and / or power supply according to the received power supply control signal, so as to meet the specific power supply requirement of different RIU modules, improve the flexibility of power distribution, and improve the RIU test efficiency.

[0044] In the embodiment, the power supply monitoring circuit can be implemented by a current detection circuit or a voltage detection circuit to detect the current flowing through the switching circuit or the voltage output by the program control power supply, and output a corresponding current detection signal or voltage detection signal; the main controller controls the on / off of the switching circuit according to the current detection signal or voltage detection signal, for example, when the main controller detects that the current value corresponding to the current detection signal is greater than the preset current value, it is judged that the path barrier is opened, and the switching circuit is disconnected to disconnect the output power supply of the path, so as to improve the stability of the power supply and the reliability of the RIU test.

[0045] In the embodiment, the power distribution box has a height of 5U and a depth of 500mm, and can be arranged in a 19-inch standard cabinet; the box body is made of 60603 aluminum alloy, and the surface of the box body is sprayed with RAL7035; the box body is sprayed with a color of microcomputer white; the front panel is provided with 28 large-current breakers, and a double-color status lamp is arranged for each power supply to indicate overcurrent, overvoltage and undervoltage; the rear panel is provided with 10 large-current circular aviation connectors; and two fans are arranged on the two sides of the box body to adjust the rotating speed of the fan module or turn off the fan module according to the temperature.

[0046] The power distribution box controls the switching circuit to switch the output power supply and / or power supply according to the power control signal sent by the program control terminal through the main controller, so as to improve the flexibility of power distribution, thereby improving the RIU test efficiency; and the main controller controls the on-off of the switching circuit according to the power parameter signal, so as to improve the reliability of the RIU test, thereby meeting the specific power supply requirements of different RIU modules, and ensuring the accuracy of the RIU test result.

[0047] In an embodiment, the power monitoring circuit includes a current detection circuit, a detection end of the current detection circuit is arranged at the second end of the switching circuit, the current detection circuit is connected with the main controller, and the current detection circuit is used for detecting the current flowing through the switching circuit and outputting a corresponding current detection signal.

[0048] The main controller is used for controlling the switching circuit to work according to the current detection signal.

[0049] In an embodiment, the power monitoring circuit further includes a voltage detection circuit, a detection end of the voltage detection circuit is arranged at the first end of the switching circuit, the voltage detection circuit is connected with the main controller, and the voltage detection circuit is used for detecting the voltage output by the program-controlled power supply and outputting a corresponding voltage detection signal.

[0050] The main controller is used for controlling the switching circuit to work according to the voltage detection signal.

[0051] In an embodiment, the power distribution box further includes an indication circuit, a controlled end of the indication circuit is connected with the main controller, and the indication circuit is used for indicating the state of the program-controlled power supply.

[0052] The main controller is used for controlling the indication circuit to work according to the current detection signal and the voltage detection signal.

[0053] In an embodiment, the indication circuit includes a double-color status lamp.

[0054] In the embodiment, the current detection circuit can be implemented by any current detection circuit capable of detecting the current flowing through the switching circuit, such as a resistor, etc. It can be understood that, in order to reduce the voltage drop caused by the resistor, the current detection circuit can be implemented by using a current sensing resistor or a shunt with a small resistance value, such as a current sensing resistor with a resistance value of less than 5 mΩ. Specifically, when the main controller detects that the current value corresponding to the current detection signal is greater than a preset current value, i.e., overcurrent, it is determined that the path barrier is in an open state, and the output power supply of the switching circuit path is disconnected, thereby improving the stability of the power supply and the reliability of the RIU test.

[0055] In the embodiment, the voltage detection circuit can be implemented by a voltage dividing resistor or an amplifier, etc. The main controller controls the switching circuit to work according to the voltage detection signal. It can be understood that, when the main controller detects that the voltage value corresponding to the voltage detection signal is greater than a first preset voltage value or less than a second preset voltage value, i.e., overvoltage or undervoltage, it is determined that the path barrier is in an open state, and the output power supply of the switching circuit path is disconnected, thereby improving the stability of the power supply and the reliability of the RIU test. The first preset voltage value and the second preset voltage value can be set according to the requirements of the RIU test. The first preset voltage value is the maximum voltage value, and the second preset voltage value is the minimum voltage value.

[0056] In the embodiment, the indication circuit is configured to indicate the state of the program-controlled power supply, so that the working staff can know the working state of the power distribution box in time. Specifically, the indication circuit can be implemented by a double-color status lamp, etc. It can be understood that the double-color status lamp can be composed of a green LED lamp and a red LED lamp. When the main controller determines that the overcurrent, overvoltage or undervoltage condition occurs according to the current detection signal or the voltage detection signal, the red LED lamp of the double-color status lamp is controlled to be lit, thereby realizing the fault indication. Correspondingly, when the overcurrent, overvoltage or undervoltage condition does not occur, the green LED lamp is lit to indicate that the power distribution box is working normally, thereby ensuring the reliability of the RIU test result.

[0057] In an embodiment, the power distribution box further comprises:

[0058] a fan module, a controlled end of the fan module being connected to the main controller;

[0059] a temperature detection circuit, a detection end of the temperature detection circuit being arranged in the power distribution box, an output end of the temperature detection circuit being connected to the main controller, the temperature detection circuit being configured to detect the temperature in the power distribution box and output a corresponding temperature detection signal;

[0060] the main controller is configured to adjust the rotating speed of the fan module according to the temperature detection signal.

[0061] In the embodiment, the temperature detection circuit can be implemented by using a thermistor, a thermocouple or the like; specifically, the main controller adjusts the rotating speed of the fan module according to the temperature detection signal to regulate the temperature in the power distribution box, that is, a temperature-duty ratio mapping table is preset in the main controller, that is, each temperature corresponds to a voltage, and the voltage determines the rotating speed, and each rotating speed corresponds to a duty ratio; for example, when the actual temperature in the power distribution box is 40 degrees, the main controller determines the rotating speed of the current fan module as 3000 rpm and the corresponding duty ratio as 60% according to the preset temperature-duty ratio mapping table, and outputs the PWM signal with the duty ratio of 60% to the controlled end of the fan module to adjust the rotating speed of the fan module to 3000 rpm to adjust the temperature in the power distribution box.

[0062] The utility model also proposes a kind of airborne electromechanical system RIU testing device, the airborne electromechanical system RIU testing device includes the power distribution box described above;The specific structure of the power distribution box refers to the above embodiment, since the airborne electromechanical system RIU testing device of the utility model adopts all technical solutions of the above all embodiments, at least has all beneficial effects brought by the technical scheme of the above embodiment, and here is not repeated.

[0063] The utility model provides a kind of for airborne electromechanical system RIU testing device's stable, flexible and meet multiple specific power supply needs Power distribution box, it is realized remote control by Ethernet control;4-way 28VDC power supply and 24-way power supply switching output can be completed, and voltage / current monitoring is carried out to each power output, improve the efficiency of RIU test;And set off according to overvoltage, undervoltage, alarm and shut down passway according to overcurrent point etc., improve the flexibility and reliability of RIU test.

[0064] The above is only preferred embodiment of the utility model, it should be pointed out, for the ordinary skilled person in the prior art, without departing from the technical principle of the utility model, can make a number of improvements and refinements on the premise, these improvements and refinements also should be regarded as the protection scope of the utility model.

Claims

1. A power distribution box applied in a test device of airborne electromechanical system RIU, characterized in that, The power distribution box comprises: a switching circuit for switching output program-controlled power, the program-controlled power comprising a power supply and a power source; a power monitoring circuit for monitoring power parameters of the program-controlled power and outputting corresponding power monitoring signals; a main controller, an input end of which is connected with the power monitoring circuit, a control end of which is connected with the switching circuit, and which further establishes a communication connection with a program-controlled terminal, is used for receiving power control signals sent by the program-controlled terminal and controlling the switching circuit to switch output of the power supply and / or power source according to the power control signals, and is further used for controlling on / off of the switching circuit according to the power monitoring signals.

2. The power distribution box of claim 1, wherein, The switching circuit comprises a plurality of single-pole single-throw switches.

3. The power distribution box of claim 1, wherein, The power monitoring circuit comprises a current detection circuit, a detection end of which is arranged at a second end of the switching circuit, which is connected with the main controller, and which is used for detecting current flowing through the switching circuit and outputting corresponding current detection signals; The main controller is used for controlling work of the switching circuit according to the current detection signals.

4. The power distribution box of claim 3, wherein, The power monitoring circuit further comprises a voltage detection circuit, a detection end of which is arranged at a first end of the switching circuit, which is connected with the main controller, and which is used for detecting voltage output by the program-controlled power and outputting corresponding voltage detection signals; The main controller is used for controlling work of the switching circuit according to the voltage detection signals.

5. The power distribution cabinet of claim 4, wherein, The power distribution box further comprises an indication circuit, a controlled end of which is connected with the main controller, and which is used for indicating a state of the program-controlled power; The main controller is used for controlling work of the indication circuit according to the current detection signals and the voltage detection signals.

6. The power distribution box of claim 5, wherein, The indication circuit comprises a double-color state lamp.

7. The power distribution box of claim 1, wherein, The power distribution box further comprises: a fan module, a controlled end of which is connected with the main controller; a temperature detection circuit, a detection end of which is arranged in the power distribution box, and an output end of which is connected with the main controller, which is used for detecting temperature in the power distribution box and outputting corresponding temperature detection signals; The main controller is used for adjusting a rotating speed of the fan module according to the temperature detection signals.

8. An on-board electromechanical system RIU test device, characterized in that, The airborne machine electrical system RIU testing device comprises the power distribution box according to any one of claims 1-7.

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