Equipment nursing system based on millimeter wave radar

Abstract

The utility model discloses an equipment nursing system based on millimeter wave radar, which comprises a mounting bracket, and the mounting bracket comprises a first bracket, a second bracket and a first supporting column. The upper portion of one side of the first support is connected with a first connecting base, the first supporting column is arranged on one side of the first support, and the upper portion of the first supporting column is rotationally connected with the first connecting base. The top of the first support is further connected with a second connecting base, the second support is arranged on the top of the first support, and the lower portion of the second support is rotationally connected with the second connecting base. The radar assembly comprises a radar shell installed on the top of the second support and a radar module installed in the radar shell. Based on different sensing effects of the millimeter-wave radar on moving targets and static targets, wild animals and people close to our camp can be identified, whether the state of static equipment is changed or not is detected at the same time, the safety of the equipment is determined, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of microwave radar technology, and in particular to an equipment monitoring system based on millimeter-wave radar. Background Technology

[0002] The main methods currently used for theft prevention of outdoor equipment are as follows:

[0003] 1) The disadvantage of traditional GPS positioning is that it can only track devices after they have been stolen and cannot provide real-time warnings.

[0004] 2) Infrared sensors have the disadvantage of being susceptible to environmental influences (changes in light and temperature) and having low reliability in complex outdoor environments.

[0005] 3) Camera surveillance has the disadvantages of high power consumption, reliance on supplemental lighting for nighttime imaging, and difficulty in avoiding privacy issues.

[0006] In summary, the above solutions have shortcomings such as high power consumption, poor real-time performance, and high false alarm rate in outdoor scenarios. To address this, this invention uses a 24GHz millimeter-wave radar and a microwave sensor to detect and identify the movement of targets, thus constructing an anti-interference, portable outdoor equipment monitoring and anti-theft system. Utility Model Content

[0007] The purpose of this invention is to provide a millimeter-wave radar-based equipment monitoring system. This system uses the different perception effects of millimeter-wave radar on moving and stationary targets to identify wild animals and people approaching our camp, while also detecting whether the state of stationary equipment has changed to determine the safety of the equipment. It is highly practical.

[0008] To achieve the above objectives, the following technical solution is adopted:

[0009] A millimeter-wave radar-based equipment monitoring system, including

[0010] The mounting bracket includes a first bracket, a second bracket, and a first support column; a first connecting seat is connected to the upper part of one side of the first bracket, the first support column is arranged on one side of the first bracket, and the upper part of the first support column is rotatably connected to the first connecting seat; a second connecting seat is also connected to the top of the first bracket, the second bracket is arranged on the top of the first bracket, and the lower part of the second bracket is rotatably connected to the second connecting seat.

[0011] A radar assembly includes a radar housing mounted on top of a second bracket, and a radar module mounted inside the radar housing. The radar module includes an MCU module, a radio frequency module, a signal processing module, a power supply module, and an antenna modulation module. The antenna modulation module is connected to the radio frequency module, and the radio frequency module is connected to the signal processing module. The MCU module is connected to both the signal processing module and the power supply module.

[0012] Furthermore, a first U-shaped groove is provided on one side of the first connecting seat, and a first connecting shaft is connected between the inner walls of the two vertical ends of the U-shaped groove; a first connecting block is connected to the top of the first support column, and the first connecting block is sleeved on the first connecting shaft.

[0013] Furthermore, the top of the second connecting seat is provided with a second U-shaped groove, and a second connecting shaft is connected between the inner walls of the two vertical ends of the U-shaped groove; a second connecting block is connected to the lower part of the second bracket, and the second connecting block is sleeved on the second connecting shaft.

[0014] Furthermore, a limit baffle is also connected to the side of the second connecting seat near the first support column.

[0015] Furthermore, the mounting bracket also includes a second support column; a third connecting block is connected to the middle of one side of the first bracket, and a third connecting shaft is connected to one side of the third connecting block; a fourth connecting block is connected to the top of the second support column, and the fourth connecting block is rotatably connected to the third connecting shaft.

[0016] Furthermore, the radio frequency module includes a radio frequency processing unit, and a transmitting antenna and a receiving antenna connected to the radio frequency processing unit; the radio frequency processing unit is connected to the signal processing module.

[0017] Furthermore, the number of transmitting antennas is set to one, and the number of receiving antennas is set to two.

[0018] Furthermore, the radar housing is also equipped with indicator lights, level output interfaces, and serial port input interfaces that are connected to the MCU module.

[0019] Furthermore, the mounting housing includes a front shell and a rear shell connected to the front shell; the inner wall of the rear shell has a wiring hole that extends into the front shell; the front shell and the rear shell each have a first groove with a semi-circular structure on opposite sides, and the two first grooves form a mounting hole; the top of the second bracket is connected to a connecting post, which is installed in the mounting hole.

[0020] Furthermore, an alarm connected to the MCU module is also installed inside the radar housing.

[0021] By adopting the above solution, the beneficial effects of this utility model are:

[0022] This invention is based on the different perception effects of millimeter-wave radar on moving and stationary targets to identify wild animals and people approaching our camp, while also detecting whether the state of stationary equipment has changed to determine the safety of the equipment. It is highly practical. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the mounting bracket of this utility model;

[0025] Figure 3 This is a structural schematic diagram of the radar assembly of this utility model (omitting part of the housing);

[0026] Figure 4 for Figure 3 A structural diagram from another perspective;

[0027] Figure 5 This is a schematic block diagram of the present invention;

[0028] Figure 6 This is a schematic diagram of the radio frequency module of this utility model;

[0029] Figure 7 This is a circuit diagram of the signal processing module of this utility model;

[0030] Figure 8 This is a circuit diagram of the antenna modulation module of this utility model;

[0031] The following are explanations of the labels in the attached diagram:

[0032] 1. Mounting bracket; 2. Radar housing; 11. First bracket; 12. Second bracket; 13. First support column; 14. First connecting seat; 15. Second connecting seat; 16. First connecting block; 17. Limiting baffle; 18. Second support column; 19. Connecting column; 21. Transmitting antenna; 22. Receiving antenna; 23. Front shell; 24. Rear shell; 25. Alarm; 26. Fixing bracket; 27. Power module; 181. Third connecting block; 182. Fourth connecting block. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 8 As shown, this utility model provides a device monitoring system based on millimeter-wave radar. In one embodiment, it includes...

[0035] Mounting bracket 1 includes a first bracket 11, a second bracket 12, and a first support column 13; a first connecting seat 14 is connected to the upper part of one side of the first bracket 11, the first support column 13 is arranged on one side of the first bracket 11, and the upper part of the first support column 13 is rotatably connected to the first connecting seat 14; a second connecting seat 15 is also connected to the top of the first bracket 11, the second bracket 12 is arranged on the top of the first bracket 11, and the lower part of the second bracket 12 is rotatably connected to the second connecting seat 15;

[0036] The radar assembly includes a radar housing 2 mounted on the top of the second bracket 12, and a radar module mounted inside the radar housing 2. The radar module includes an MCU module, a radio frequency module, a signal processing module, a power supply module 27, and an antenna modulation module. The antenna modulation module is connected to the radio frequency module, and the radio frequency module is connected to the signal processing module. The MCU module is connected to both the signal processing module and the power supply module 27.

[0037] Continue to refer to Figures 1 to 8 As shown, in this embodiment, the first bracket 11 includes two parallel first columns and a reinforcing beam connected between the two first columns. The upper part of the first support column 13 is rotatably connected to the first connecting seat 14. When using the system, the mounting bracket 1 can be placed next to the equipment to be monitored, and the radar component can be directed to the equipment. At the same time, the first support column 13 can be rotated at a certain angle to open and support it, ensuring the stability of the placement. When the system is not in use, the first support column 13 can be rotated and stored in one side of the mounting bracket 1, and the second bracket 12 can be rotated and stored in the other side of the first bracket 11 for easy handling and carrying.

[0038] In this embodiment, the radio frequency module includes a radio frequency processing unit, and a transmitting antenna 21 and a receiving antenna 22 connected to the radio frequency processing unit; the radio frequency processing unit is connected to the signal processing module. Simultaneously, the radar operates in the ISM band (24.0–24.25 GHz). The signal processing module includes two signal filtering and amplification units, one for processing IFI signals and the other for processing IFQ signals; each signal filtering and amplification unit includes a signal filtering unit and a signal amplification unit connected to the signal filtering unit; the signal filtering unit is connected to the radio frequency processing unit, and the signal amplification unit is connected to the MCU module. Furthermore, as... Figure 6As shown, the radio frequency processing unit includes a voltage-controlled oscillator, a first power divider, a second power divider, a 90° phase shifter, a first mixer, a second mixer, a power amplifier, and a low-noise amplifier. The input terminal of the first power divider is connected to the voltage-controlled oscillator, the first output terminal of the first power divider is connected to the transmitting antenna 21, and the second output terminal of the first power divider is connected to the input terminal of the second power divider. The first output terminal of the second power divider is connected to the first input terminal of the first mixer, and the second output terminal of the second power divider is connected to the input terminal of the 90° phase shifter. The second input terminal of the first mixer is connected to the first output terminal of the power divider. The first input terminal of the second mixer is connected to the output terminal of the 90° phase shifter, and the second input terminal of the second mixer is connected to the second output terminal of the power divider. The input terminal of the power divider is connected to the output terminal of the low-noise amplifier, and the input terminal of the low-noise amplifier is connected to the receiving antenna 22.

[0039] The output of the first mixer is used to output the IFI signal, and the output of the second mixer is used to output the IFQ signal. When using this system, the voltage-controlled oscillator generates a detection signal with a certain bandwidth according to the modulation signal (the antenna modulation module controls the radar's transmission frequency at certain time intervals). This signal is transmitted to the transmitting antenna 21 via the first power divider, and then directed towards the area to be detected via the transmitting antenna 21. The radar records the placement of all objects within the current beam range (i.e., the environmental background of the radar target). When a target within the radar beam range moves, the radar senses the change in the object and subsequently issues an alarm. Specifically, after the signal encounters the target, the reflected signal is converted into a high-frequency electrical signal by the receiving antenna 22, amplified by a low-noise amplifier, and then transmitted to the second power divider. The two power dividers distribute the signal to the first mixer and the second mixer respectively. The first mixer and the second mixer mix the signal with the detection signal before transmission by the transmitting antenna 21 to obtain intermediate frequency signals (IF signals, IFQ signals). Then, the signal filtering unit of the signal processing module filters out a portion of the low-frequency component of the intermediate frequency signal (the intermediate frequency signal contains low-frequency noise signals and low-frequency signals reflected from non-targets, in order to reduce modulation leakage caused by mixing). Subsequently, the signal amplification unit amplifies the filtered signal and transmits it to the MCU module. The MCU module has a built-in audio A / D conversion unit, which can convert it into a digital signal. Then, the target's distance information, speed information and azimuth information can be extracted from the digital signal, thereby realizing target detection.

[0040] In addition, the radar can also detect intrusion targets entering the monitored area and can activate the alarm 25 to drive away wild animals and prevent the equipment from being damaged by wild animals. The radar can also be linked with multiple sensors to trigger, such as activating the camera to take pictures when a target intrusion is detected, to further determine whether it is a human target or an animal target intrusion. The radar can be used as a standalone module and an intrusion sensing module. At the same time, multiple radar modules can form a network connection to monitor equipment and intrusion targets in an open area, making it highly practical.

[0041] In one embodiment, the number of transmitting antennas 21 is set to one, and the number of receiving antennas 22 is set to two. The radar housing 2 is also equipped with an indicator light, a level output interface, and a serial port input interface connected to the MCU module. An alarm 25 connected to the MCU module is also installed inside the radar housing 2. After the signal is reflected by the target, it is received by the two receiving antennas 22 of the radar. From the mixing result of the two receiving antennas 22 and the transmitting antenna 21, the distance, speed, and azimuth information of the target can be obtained, thereby achieving target location detection. Simultaneously, an indicator light and an alarm 25 are provided. Upon detecting a target intrusion, an alert will be issued to the outside world. Furthermore, the level output interface can be directly linked to other devices (such as cameras or alarms) to form a complete security monitoring network. A serial port input interface is also provided for easy expansion, allowing direct connection to Bluetooth and Wi-Fi modules for network deployment, further expanding the monitoring range and improving the security level.

[0042] In one embodiment, a first U-shaped groove is provided on one side of the first connecting seat 14, and a first connecting shaft is connected between the inner walls of the two vertical ends of the U-shape of the first U-shaped groove; a first connecting block 16 is connected to the top of the first support column 13, and the first connecting block 16 is sleeved on the first connecting shaft; a second U-shaped groove is provided on the top of the second connecting seat 15, and a second connecting shaft is connected between the inner walls of the two vertical ends of the U-shape of the second U-shaped groove; a second connecting block is connected to the lower part of the second bracket 12, and the second connecting block is sleeved on the second connecting shaft; a limiting baffle 17 is also connected to the side of the second connecting seat 15 near the first support column 13. The limiting baffle 17 can limit the rotation angle of the second bracket 12.

[0043] In addition, to further improve the stability of the system placement, the mounting bracket 1 also includes a second support column 18; a third connecting block 181 is also connected to the middle of one side of the first bracket 11, and a third connecting shaft is also connected to one side of the third connecting block 181; a fourth connecting block 182 is connected to the top of the second support column 18, and the fourth connecting block 182 is rotatably connected to the third connecting shaft.

[0044] In one embodiment, the mounting housing includes a front shell 23 and a rear shell 24 connected to the front shell 23; the inner wall of the rear shell 24 has a wiring hole that extends into the front shell 23; the front shell 23 and the rear shell 24 each have a semi-circular first groove on opposite sides, and the two first grooves form a mounting hole; the top of the second bracket 12 is connected to a connecting post 19, which is installed in the mounting hole. The power module 27 and the alarm 25 are installed in the rear shell 24, and a fixing bracket 26 is also installed in the front shell 23. The fixing bracket 26 has a T-shaped structure, and the vertical end of the T-shaped fixing bracket 26 is connected to the inner wall of the front shell 23. The MCU module, the radio frequency module, the signal processing module, and the antenna modulation module are installed on the horizontal end of the T-shaped fixing bracket 26. The cable of the power module 27 passes through the wiring hole and is connected to the above modules to supply power.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A millimeter wave radar-based device baby-sitting system, characterized by, Comprising The mounting bracket comprises a first bracket, a second bracket, a first support column; a first connecting seat is connected to the upper part of one side of the first bracket, the first support column is arranged on one side of the first bracket, and the upper part of the first support column is rotationally connected with the first connecting seat; a second connecting seat is further connected to the top of the first bracket, the second bracket is arranged on the top of the first bracket, and the lower part of the second bracket is rotationally connected with the second connecting seat; The radar assembly comprises a radar shell mounted on the top of the second bracket, and a radar module mounted in the radar shell; the radar module comprises an MCU module, a radio frequency module, a signal processing module, a power module and an antenna modulation module; the antenna modulation module is connected with the radio frequency module, the radio frequency module is connected with the signal processing module; the MCU module is connected with the signal processing module and the power module respectively. 2.The millimeter wave radar-based device babysitting system according to claim 1, wherein, A first U-shaped notch is formed in one side of the first connecting seat, and a first connecting shaft is connected between the inner walls of the two vertical ends of the first U-shaped notch; a first connecting block is connected to the top of the first support column, and the first connecting block is sleeved on the first connecting shaft. 3.The millimeter wave radar-based device babysitting system according to claim 2, characterized in that, A second U-shaped notch is formed in the top of the second connecting seat, and a second connecting shaft is connected between the inner walls of the two vertical ends of the second U-shaped notch; a second connecting block is connected to the lower part of the second bracket, and the second connecting block is sleeved on the second connecting shaft. 4.The millimeter wave radar-based device babysitting system according to claim 3, wherein, The side of the second connecting seat close to the first support column is further connected with a limiting baffle. 5.The millimeter wave radar-based device babysitting system according to claim 1, wherein, The mounting bracket further comprises a second support column; a third connecting block is further connected to the middle of one side of the first bracket, and a third connecting shaft is further connected to one side of the third connecting block; a fourth connecting block is connected to the top of the second support column, and the fourth connecting block is rotationally connected with the third connecting shaft. 6.The millimeter wave radar-based device babysitting system according to claim 1, wherein, The radio frequency module comprises a radio frequency processing unit, and a transmitting antenna and a receiving antenna connected with the radio frequency processing unit; the radio frequency processing unit is connected with the signal processing module. 7.The millimeter wave radar-based device babysitting system according to claim 6, characterized in that, The number of transmitting antennas is set to one, and the number of receiving antennas is set to two. 8.The millimeter wave radar-based device babysitting system according to claim 1, wherein, An indicator light, a level output interface and a serial port input interface connected with the MCU module are further mounted on the radar shell. 9.The millimeter wave radar-based device babysitting system according to claim 1, wherein, The mounting shell comprises a front shell and a rear shell connected with the front shell; a wiring hole penetrating into the front shell is formed in the inner wall of the rear shell; a first recess in a semicircular structure is formed in the side opposite to the front shell of the rear shell, and an installation hole is surrounded between the two first recesses; a connecting column is connected to the top of the second bracket, and the connecting column is mounted in the installation hole. 10.The millimeter wave radar-based device babysitting system according to claim 1, wherein, An alarm connected with the MCU module is further mounted in the radar shell.

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