A master-slave base station structure for a helicopter suspension swing monitoring device

Abstract

The utility model relates to a master-slave base station structure of a helicopter suspension swing monitoring device, the master-slave base station structure comprises: a master base station and a plurality of slave base stations, the master base station and the plurality of slave base stations perform wireless communication; the master base station and the slave base stations have the same structure, both comprising: a main control MCU module, a positioning UWB module, a video acquisition module, a power module and a communication serial port module; the main control MCU module is respectively connected with the positioning UWB module, the video acquisition module, the power module and the communication serial port module, and the master base station and the slave base stations are connected via the communication serial port module; when the utility model is unloaded or fully loaded and the driver is disabled, power supply current is consumed, the driver is limited by short-circuit current, and is protected from excessive power consumption by a thermal shutdown circuit, the circuit puts the driver output in a high impedance state, the receiver input has a fail-safe function, and can ensure a logic high output when the input is open, thereby stabilizing the power consumption of the communication serial port module and preventing the internal temperature from being too high.

Description

Technical Field

[0001] The utility model discloses a master-slave base station structure, belongs to the technical field of helicopter hanging swing monitoring devices, and specifically relates to a master-slave base station structure of a helicopter hanging swing monitoring device. Background Art

[0002] The hanging swing monitoring device is used to monitor the relative position of the hanging objects relative to the fuselage when the helicopter is flying with hanging objects. This system is based on ultra-wideband radio frequency signal (UWB) positioning technology to solve the problem that the existing technology cannot monitor the swing information of the hanging objects under the belly of the aircraft in real time.

[0003] It includes: a positioning tag, a master-slave positioning base station and an infrared camera; the positioning tag is installed on the external hanging object of the helicopter or near the hanging point of the external hanging object, and is used to send data to the positioning base station; the main positioning base station is installed on the belly of the helicopter, and is used to receive the positioning tag data, solve its position and angle information, and cross-link data with the onboard terminal; three slave positioning base stations are respectively installed at different positions on the belly of the helicopter, and are used to receive the positioning tag data; the infrared camera is installed on the main positioning base station, and covers the swing range of the hanging object through its wide-angle lens, and provides a real-time infrared image of the swing of the hanging object. The present invention has a simple structure, can intuitively and conveniently display the swing information of the hanging object to the helicopter operator, and can be used for military and civilian helicopter flight transportation tasks.

[0004] However, the wireless communication technology between the main base station and the slave base station of the hanging swing monitoring device in the prior art will cause excessive power consumption of the serial ports of the main base station and the slave base station when the main base station and the slave base station are unloaded or fully loaded, thereby causing the temperature of the main base station and the slave base station to rise, and in severe cases, cause the main base station and the slave base station to malfunction. Utility Model Content

[0005] The purpose of the utility model is to provide a master-slave base station structure for a helicopter suspension swing monitoring device to solve the above-mentioned problems.

[0006] Technical solution: A master-slave base station structure of a helicopter hanging swing monitoring device, the master-slave base station structure includes: a master base station and a plurality of slave base stations, the master base station and the plurality of slave base stations communicate wirelessly; the master base station and the slave base stations have the same structure, both including: a main control MCU module, a positioning UWB module, a video acquisition module, a power module and a communication serial port module;

[0007] The main control MCU module is respectively connected to the positioning UWB module, the video acquisition module, the power module and the communication serial port module, and the main base station is connected to the slave base station via the communication serial port module.

[0008] In a further embodiment, the main control MCU module is composed of an MCU chip, and the MCU chip adopts the GD32F407ZKT6 series.

[0009] In a further embodiment, the positioning UWB module is composed of a positioning chip, and the positioning chip adopts a dual-frequency positioning chip with model number TSG5162UWB+BLE5.1.

[0010] In a further embodiment, the video acquisition module is composed of a camera and a high-definition video encoding chip of model GM7123.

[0011] In a further embodiment, the communication serial port module is composed of a full-duplex RA422A interface and a low-power transceiver of model CBM3485AS, and the low-power transceiver includes a driver and a receiver.

[0012] In a further embodiment, the communication serial port module includes: resistor R752, resistor R751, resistor R763, resistor R764, low power transceiver U301, resistor R303, capacitor C301, resistor R301, resistor R302, voltage regulator D330, transistor Q751;

[0013] The gate B of the transistor Q751 is connected to one end of the resistor R751, the collector C is connected to pin 2 of the low-power transceiver U301 and one end of the resistor R752, and the emitter E is grounded. The other end of the resistor R751 is connected to the RA422A interface, the other end of the resistor R752 is input with voltage, one end of the resistor R763 is input with voltage and the other end is connected to pin 1 of the low-power transceiver U301, one end of the resistor R764 is input with voltage and the other end is connected to pin 4 of the low-power transceiver U301, pins 1 and 4 of the low-power transceiver U301 are connected to the main control MCU module, and the low Pin 8 of the power transceiver U301 is connected to one end of the capacitor C301 and inputs voltage, the other end of the capacitor C301 is connected to one end of the resistor R301 and grounded, pin 7 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R302, the other end of the resistor R301 and pin 2 of the voltage regulator D330 and outputs, pin 6 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R303, the other end of the resistor R302 and pin 1 of the voltage regulator D330 and outputs, the other end of the resistor R303 inputs voltage, and pin 5 of the low-power transceiver U301 is grounded.

[0014] In a further embodiment, the power supply module includes a rectifier and filter circuit, a 5V voltage output circuit and a 3.3V voltage output circuit, the input end of the rectifier and filter circuit is connected to the power interface, the output end outputs a 28V voltage and is connected to the input end of the 5V voltage output circuit, the output end of the 5V voltage output circuit outputs a 5V voltage to other modules and is connected to the input end of the 3.3V voltage output circuit, and the 3.3V voltage output circuit outputs a 3.3V voltage.

[0015] In a further embodiment, the power module includes a power interface J1-1, a power interface J1-2, a capacitor C801, a capacitor C802, a capacitor C803, a varistor RV1, a voltage regulator D802, a rectifier DM, a capacitor C805, a voltage regulator U801, a voltage regulator D803, an inductor L1, a capacitor C807, a capacitor C808, a capacitor C816, a capacitor C817, a voltage regulator U802, a capacitor C818, a capacitor C819, a capacitor C820, and a resistor R807;

[0016] Pin 2 of the rectifier DM is simultaneously connected to pin 1 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C801, one end of capacitor C803, one end of varistor RV1 and pin 2 of the voltage regulator D802, and pin 3 of the rectifier DM is simultaneously connected to pin 2 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C802, the other end of capacitor C803, the other end of varistor RV1 and pin 2 of the voltage regulator D802. The first pin of the voltage regulator U801 is connected to the first pin of the voltage regulator D805, the other end of the capacitor C801 and the other end of the capacitor C802 are connected to the common end, the first pin of the rectifier DM outputs a 28V voltage, and the first pin of the voltage regulator U801 is connected to one end of the capacitor C805 and inputs a 28V voltage, the fifth pin of the voltage regulator U801 is connected to the third pin and the other end of the capacitor C805 and is grounded, and the second pin of the voltage regulator U801 is connected to the negative electrode of the voltage regulator tube D803 and one end of the inductor L1 at the same time. The first end of the voltage regulator U801 is connected to the other end of the inductor L1, one end of the capacitor C807, and one end of the capacitor C808, and outputs a 5V voltage. The second end of the voltage regulator U801 is connected to the positive electrode of the voltage regulator tube D803, the other end of the capacitor C807, and the other end of the capacitor C808, and is grounded. The third end of the voltage regulator U802 is connected to one end of the capacitor C816 and one end of the capacitor C817, and inputs a 5V voltage. Pin 4 is connected to pin 2, and is also connected to one end of the capacitor C819, one end of the capacitor C820, and one end of the resistor R807. The resistor R807 outputs a 3.3V voltage. Pin 2 of the voltage regulator U802 is connected to one end of the capacitor C818. Pin 1 of the voltage regulator U802 is also connected to the other end of the capacitor C816, the other end of the capacitor C817, the other end of the capacitor C818, the other end of the capacitor C819, and the other end of the capacitor C820 and is grounded.

[0017] Beneficial effects: The communication serial port modules in the master base station and the slave base station of the utility model are composed of a full-duplex RA422A interface and a low-power transceiver. When the drivers are unloaded or fully loaded and disabled, these transceivers consume 120μA to 500μA of power supply current. All components are powered by a single 3.3V power supply. The drivers are limited by short-circuit current and are protected from excessive power consumption by a thermal shutdown circuit, which puts the driver output in a high-impedance state. The receiver input has a fail-safe function that ensures a logic high output when the input is open, so that the utility model can stabilize the power consumption of the communication serial port module and prevent the internal temperature from being too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the utility model.

[0019] Figure 2 The utility model is a circuit diagram of a communication serial port module.

[0020] Figure 3 This is a circuit diagram of a power module of the utility model.

[0021] Figure 4 It is a schematic diagram of a video acquisition module of the utility model.

[0022] Figure 5 It is a principle diagram of the utility model. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] A master-slave base station structure of a helicopter suspension swing monitoring device, such as Figure 5As shown, the master-slave base station structure includes: a master base station and several slave base stations, and the master base station communicates wirelessly with the several slave base stations; the master base station and the slave base station have the same structure, and both include: a main control MCU module, a positioning UWB module, a video acquisition module, a power module and a communication serial port module;

[0027] The main control MCU module is respectively connected to the positioning UWB module, the video acquisition module, the power module and the communication serial port module, and the main base station is connected to the slave base station via the communication serial port module.

[0028] In one embodiment, Figure 1 As shown, the main control MCU module is composed of an MCU chip, and the MCU chip adopts the GD32F407ZKT6 series, and the peripherals / functions / protocol stacks include: on-chip temperature sensor; DMA; watchdog; LIN bus protocol; PWM; Ethernet protocol stack; IrDA; SDIO; and RTC real-time clock.

[0029] In one embodiment, Figure 1 As shown, the positioning UWB module is composed of a positioning chip, and the positioning chip adopts a dual-frequency positioning chip with model number TSG5162UWB+BLE5.1.

[0030] In one embodiment, Figure 4 As shown in the figure, the video acquisition module is composed of a camera and a high-definition video encoding chip of model GM7123. The video encoding chip is a 9-bit video input pre-processing chip. The chip adopts CMOS technology and is connected to a PC or DSP through an I2C bus to form an application system. It contains an analog processing channel inside, which can realize CVBS, S-Video video signal source selection, A / D conversion, automatic clamping, automatic gain control (AGC), clock generation (CGC), multi-standard decoding, brightness / contrast / saturation control (BCS).

[0031] In one embodiment, Figure 1 As shown, the communication serial port module consists of a full-duplex RA422A interface and a low-power transceiver model CBM3485AS, which contains a driver and a receiver. CBM3485 is a low-power transceiver for RS-485 and RS-422 communications. The integrated circuit contains a driver and a receiver. The driver conversion rate of CBM3485 is not limited, allowing them to transmit up to 10Mbps.

[0032] These transceivers consume supply currents ranging from 120μA to 500μA when unloaded or fully loaded with the drivers disabled. All parts operate from a single 3.3V supply. The drivers are short-circuit current limited and are protected from excessive power dissipation by a thermal shutdown circuit that places the driver outputs in a high-impedance state. The receiver inputs have a fail-safe feature that guarantees a logic-high output when the inputs are open circuit.

[0033] In one embodiment, Figure 2 As shown, the communication serial port module includes: resistor R752, resistor R751, resistor R763, resistor R764, low power transceiver U301, resistor R303, capacitor C301, resistor R301, resistor R302, voltage regulator D330, transistor Q751;

[0034] The gate B of the transistor Q751 is connected to one end of the resistor R751, the collector C is connected to pin 2 of the low-power transceiver U301 and one end of the resistor R752, and the emitter E is grounded. The other end of the resistor R751 is connected to the RA422A interface, the other end of the resistor R752 is input with voltage, one end of the resistor R763 is input with voltage and the other end is connected to pin 1 of the low-power transceiver U301, one end of the resistor R764 is input with voltage and the other end is connected to pin 4 of the low-power transceiver U301, pins 1 and 4 of the low-power transceiver U301 are connected to the main control MCU module, and the low Pin 8 of the power transceiver U301 is connected to one end of the capacitor C301 and inputs voltage, the other end of the capacitor C301 is connected to one end of the resistor R301 and grounded, pin 7 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R302, the other end of the resistor R301 and pin 2 of the voltage regulator D330 and outputs, pin 6 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R303, the other end of the resistor R302 and pin 1 of the voltage regulator D330 and outputs, the other end of the resistor R303 inputs voltage, and pin 5 of the low-power transceiver U301 is grounded.

[0035] In one embodiment, Figure 1 As shown, the power supply module includes a rectifier and filter circuit, a 5V voltage output circuit and a 3.3V voltage output circuit. The input end of the rectifier and filter circuit is connected to the power interface, and the output end outputs a 28V voltage and is connected to the input end of the 5V voltage output circuit. The output end of the 5V voltage output circuit outputs a 5V voltage to other modules and is connected to the input end of the 3.3V voltage output circuit. The 3.3V voltage output circuit outputs a 3.3V voltage.

[0036] In one embodiment, Figure 3 As shown, the power module includes a power interface J1-1, a power interface J1-2, a capacitor C801, a capacitor C802, a capacitor C803, a varistor RV1, a voltage regulator D802, a rectifier DM, a capacitor C805, a voltage regulator U801, a voltage regulator D803, an inductor L1, a capacitor C807, a capacitor C808, a capacitor C816, a capacitor C817, a voltage regulator U802, a capacitor C818, a capacitor C819, a capacitor C820, and a resistor R807;

[0037] Pin 2 of the rectifier DM is simultaneously connected to pin 1 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C801, one end of capacitor C803, one end of varistor RV1 and pin 2 of the voltage regulator D802, and pin 3 of the rectifier DM is simultaneously connected to pin 2 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C802, the other end of capacitor C803, the other end of varistor RV1 and pin 2 of the voltage regulator D802. The first pin of the voltage regulator U801 is connected to the first pin of the voltage regulator D805, the other end of the capacitor C801 and the other end of the capacitor C802 are connected to the common end, the first pin of the rectifier DM outputs a 28V voltage, and the first pin of the voltage regulator U801 is connected to one end of the capacitor C805 and inputs a 28V voltage, the fifth pin of the voltage regulator U801 is connected to the third pin and the other end of the capacitor C805 and is grounded, and the second pin of the voltage regulator U801 is connected to the negative electrode of the voltage regulator tube D803 and one end of the inductor L1 at the same time. The first end of the voltage regulator U801 is connected to the other end of the inductor L1, one end of the capacitor C807, and one end of the capacitor C808, and outputs a 5V voltage. The second end of the voltage regulator U801 is connected to the positive electrode of the voltage regulator tube D803, the other end of the capacitor C807, and the other end of the capacitor C808, and is grounded. The third end of the voltage regulator U802 is connected to one end of the capacitor C816 and one end of the capacitor C817, and inputs a 5V voltage. Pin 4 is connected to pin 2, and is also connected to one end of the capacitor C819, one end of the capacitor C820, and one end of the resistor R807. The resistor R807 outputs a 3.3V voltage. Pin 2 of the voltage regulator U802 is connected to one end of the capacitor C818. Pin 1 of the voltage regulator U802 is also connected to the other end of the capacitor C816, the other end of the capacitor C817, the other end of the capacitor C818, the other end of the capacitor C819, and the other end of the capacitor C820 and is grounded.

[0038] In one embodiment, Figure 1As shown, an electronic tag is provided between the master base station and the slave base station, and the electronic tag adopts a UWB micro tag and is used in conjunction with a UWB chip. UWB micro tag.

[0039] In one embodiment, Figure 1 As shown, the master base station and the slave base station communicate with the positioning server at the same time.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A master-slave base station structure of a helicopter suspension swing monitoring device, characterized in that: The master-slave base station structure includes: a master base station and several slave base stations, and the master base station communicates wirelessly with the several slave base stations; the master base station and the slave base stations have the same structure, and both include: a main control MCU module, a positioning UWB module, a video acquisition module, a power module and a communication serial port module; The main control MCU module is respectively connected to the positioning UWB module, the video acquisition module, the power module and the communication serial port module, and the main base station is connected to the slave base station via the communication serial port module.

2. According to claim 1, a master-slave base station structure of a helicopter suspension swing monitoring device is characterized in that: The main control MCU module is composed of an MCU chip, and the MCU chip adopts the model of GD32F407ZKT6 series.

3. According to claim 1, a master-slave base station structure of a helicopter suspension swing monitoring device is characterized in that: The positioning UWB module is composed of a positioning chip, and the positioning chip adopts a dual-frequency positioning chip with model number TSG5162UWB+BLE5.

1.

4. According to claim 1, a master-slave base station structure of a helicopter suspension swing monitoring device is characterized in that: The video acquisition module is composed of a camera and a high-definition video encoding chip of model GM7123.

5. According to claim 1, a master-slave base station structure of a helicopter suspension swing monitoring device is characterized in that: The communication serial port module is composed of a full-duplex RA422A interface and a low-power transceiver of model CBM3485AS, wherein the low-power transceiver includes a driver and a receiver.

6. The master-slave base station structure of the helicopter suspension swing monitoring device according to claim 5, characterized in that: The communication serial port module includes: resistor R752, resistor R751, resistor R763, resistor R764, low power transceiver U301, resistor R303, capacitor C301, resistor R301, resistor R302, voltage regulator D330, transistor Q751; The gate B of the transistor Q751 is connected to one end of the resistor R751, the collector C is connected to pin 2 of the low-power transceiver U301 and one end of the resistor R752, and the emitter E is grounded. The other end of the resistor R751 is connected to the RA422A interface, the other end of the resistor R752 is input with voltage, one end of the resistor R763 is input with voltage and the other end is connected to pin 1 of the low-power transceiver U301, one end of the resistor R764 is input with voltage and the other end is connected to pin 4 of the low-power transceiver U301, pins 1 and 4 of the low-power transceiver U301 are connected to the main control MCU module, and the low Pin 8 of the power transceiver U301 is connected to one end of the capacitor C301 and inputs voltage, the other end of the capacitor C301 is connected to one end of the resistor R301 and grounded, pin 7 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R302, the other end of the resistor R301 and pin 2 of the voltage regulator D330 and outputs, pin 6 of the low-power transceiver U301 is simultaneously connected to one end of the resistor R303, the other end of the resistor R302 and pin 1 of the voltage regulator D330 and outputs, the other end of the resistor R303 inputs voltage, and pin 5 of the low-power transceiver U301 is grounded.

7. The master-slave base station structure of a helicopter suspension swing monitoring device according to claim 1, characterized in that: The power supply module includes a rectifier and filter circuit, a 5V voltage output circuit and a 3.3V voltage output circuit. The input end of the rectifier and filter circuit is connected to the power interface, and the output end outputs a 28V voltage and is connected to the input end of the 5V voltage output circuit. The output end of the 5V voltage output circuit outputs a 5V voltage and is connected to the input end of the 3.3V voltage output circuit. The 3.3V voltage output circuit outputs a 3.3V voltage.

8. The master-slave base station structure of a helicopter suspension swing monitoring device according to claim 7, characterized in that: The power module includes a power interface J1-1, a power interface J1-2, a capacitor C801, a capacitor C802, a capacitor C803, a varistor RV1, a voltage regulator D802, a rectifier DM, a capacitor C805, a voltage regulator U801, a voltage regulator D803, an inductor L1, a capacitor C807, a capacitor C808, a capacitor C816, a capacitor C817, a voltage regulator U802, a capacitor C818, a capacitor C819, a capacitor C820, and a resistor R807; Pin 2 of the rectifier DM is simultaneously connected to pin 1 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C801, one end of capacitor C803, one end of varistor RV1 and pin 2 of the voltage regulator D802, and pin 3 of the rectifier DM is simultaneously connected to pin 2 of the power interface J1-1, pin 1 of the power interface J1-2, one end of capacitor C802, the other end of capacitor C803, the other end of varistor RV1 and pin 2 of the voltage regulator D802. The first pin of the voltage regulator U801 is connected to the first pin of the voltage regulator D805, the other end of the capacitor C801 and the other end of the capacitor C802 are connected to the common end, the first pin of the rectifier DM outputs a 28V voltage, and the first pin of the voltage regulator U801 is connected to one end of the capacitor C805 and inputs a 28V voltage, the fifth pin of the voltage regulator U801 is connected to the third pin and the other end of the capacitor C805 and is grounded, and the second pin of the voltage regulator U801 is connected to the negative electrode of the voltage regulator tube D803 and one end of the inductor L1 at the same time. The first end of the voltage regulator U801 is connected to the other end of the inductor L1, one end of the capacitor C807, and one end of the capacitor C808, and outputs a 5V voltage. The second end of the voltage regulator U801 is connected to the positive electrode of the voltage regulator tube D803, the other end of the capacitor C807, and the other end of the capacitor C808, and is grounded. The third end of the voltage regulator U802 is connected to one end of the capacitor C816 and one end of the capacitor C817, and inputs a 5V voltage. Pin 4 is connected to pin 2, and is also connected to one end of the capacitor C819, one end of the capacitor C820, and one end of the resistor R807. The resistor R807 outputs a 3.3V voltage. Pin 2 of the voltage regulator U802 is connected to one end of the capacitor C818. Pin 1 of the voltage regulator U802 is also connected to the other end of the capacitor C816, the other end of the capacitor C817, the other end of the capacitor C818, the other end of the capacitor C819, and the other end of the capacitor C820 and is grounded.

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