Train sleeper carriage personnel detection device based on millimeter wave radar

Abstract

The utility model discloses a train sleeping compartment personnel detection device based on millimeter wave radar, which comprises the following components: millimeter wave radar which is mounted opposite to a compartment door and above a window in a compartment; the control module is connected with the millimeter wave radar and used for power supply and data transmission; the display panel is connected with the control module; the millimeter-wave radar comprises an antenna unit, a main control unit and a millimeter-wave radar communication unit, and the millimeter-wave radar communication unit is connected with the control module for communication; data in a compartment are detected through the millimeter wave radar, the data are transmitted to the control module and interacted with the control module, and finally data information is displayed on the display panel. The millimeter wave radar main body can be used for monitoring the bed occupation state of a train sleeping berth carriage and passenger behaviors, and has the functions of carriage defense arrangement and early warning and the like; the state of each compartment can be monitored in real time through the upper computer at the PC end of a control room, and the privacy dispute risk involved in video monitoring does not exist.

Description

TECHNICAL FIELD

[0001] The utility model relates to millimeter wave radar early warning technical field, concretely is a train sleeper carriage personnel detection device based on millimeter wave radar. BACKGROUND

[0002] With the development of science and technology, various technologies are widely used in real life; At the same time, the conflict between safety needs, intelligent management and privacy is increasingly prominent; With the improvement of living standards, people's social range, travel destination distance span and domestic scenic market construction are increasingly improved, and travel demand grows rapidly; In long-distance travel, such as self-driving, bus, train, plane and other travel modes, the comparison of comfort, cost, safety, travel constraints, etc., the train sleeper travel mode has obvious advantages.

[0003] The existing train sleeper carriage management manual inspection efficiency is low, and the attendant needs to frequently check and check the passenger identity and berth use state, and the abnormal condition is easy to be missed at night; Nowadays, people pay more and more attention to safety and privacy protection, and there is certain pressure on the supervision work of public area; The contradiction between train sleeper carriage, which is a public area and has a privacy space, is particularly obvious. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a train sleeper carriage personnel detection device based on millimeter wave radar, to realize train sleeper carriage bed occupancy state, passenger behavior monitoring, carriage defense early warning, and improve railway operation efficiency and passenger safety level.

[0005] To achieve the above object, the utility model provides the following technical scheme: a train sleeper carriage personnel detection device based on millimeter wave radar, comprising:

[0006] Millimeter wave radar is installed opposite the carriage door in the carriage and above the window; Millimeter wave radar is used for train sleeper carriage bed occupancy state, passenger behavior monitoring, carriage defense early warning.

[0007] Control module is connected with millimeter wave radar and is used for power supply and data transmission, provides power supply for millimeter wave radar and display panel, and the power supply variable part is designed in the control module; The control module outputs 12V DC stabilized power supply; Simplify the power supply circuit of each module; And

[0008] Display panel is connected with control module; The communication unit of millimeter wave radar, the communication unit of control module and the communication unit of display panel are a group of mutually connected RS485 bus; The stable communication of each module is realized, and too many interface resources are avoided.

[0009] The millimeter wave radar comprises an antenna unit, a master control unit and a millimeter wave radar communication unit, the millimeter wave radar communication unit is connected with the control module for communication; data in the carriage is detected by the millimeter wave radar, the data is transmitted to the control module and interacts with the control module, and finally the data information is displayed on the display panel. The millimeter wave radar antenna is a PCB microstrip antenna with three transmitters and four receivers, the array element size is designed flexibly, the gain is strong, and the azimuth angle and the elevation angle are wide; the relative position of the target existing in the carriage can be effectively distinguished and recognized. The antenna unit is a microstrip antenna, which is processed and manufactured by using high-frequency PCB board; the processing precision is high, the gain is strong, the channel consistency is good, and the two sides of the radar installed above the carriage window and the corridor area of the carriage door can be perfectly covered. The master control unit sends and receives electromagnetic waves through the antenna unit, compares the echoes, and identifies the living bodies in the detection coverage area. The millimeter wave radar communication unit connects the control module for data interaction, and outputs the behavior state, relative position and early warning state information of the passengers in the carriage.

[0010] As a further improvement of the above technical solution:

[0011] The control module comprises a control module microprocessor, a relay drive, a control relay, a CAN bus module, an external interface and a control module communication unit, the control module microprocessor is connected with the relay drive, the CAN bus module and the control module communication unit, the relay drive is connected with the control relay, and the external interface is connected with the control relay, the CAN bus module and the control module communication unit. The control relay, as a sleep early warning output, can be connected with the carriage ceiling lamp or the alarm; when the radar detects that the personnel on the carriage bed is in a sleep state, detects that the carriage door is opened, or detects that someone stays at the door when the carriage door is opened, the early warning is triggered. The CAN bus is connected with the vehicle, connects different carriages and control rooms of the train; supports connecting the CAN bus through a PC, and performs communication control on the host computer for carriage state output, time service, display panel nixie tube display information editing, maintenance setting, etc. The control module external interface is connected with the millimeter wave radar, the display panel and the train through a wire harness, and provides power supply for the millimeter wave radar and the display panel. The control module microprocessor communicates with the millimeter wave radar through the control module communication unit, and interacts with the data of the function modes such as the carriage scene, the bed occupancy state and the sleep early warning. The control module CAN bus connects different carriages and control rooms of the train, and can perform state output, time service, maintenance setting, etc. The control module relay drive circuit is used for controlling the control relay, and is used for alarm output when the sleep early warning is triggered.

[0012] The display panel includes a display panel microprocessor, a nixie tube driver, a nixie tube, a indicator light driver, a status indicator light and a display panel communication unit; the display panel microprocessor is connected with the nixie tube driver, the indicator light driver and the display panel communication unit; the nixie tube driver is connected with the nixie tube, and the indicator light driver is connected with the status indicator light. The nixie tube is a 10-group 16*16 LED dot matrix, and can display a carriage number, a full carriage status or other Chinese and English information prompts; and can realize subtitle prompts for passengers or groups that need special attention. The status indicator light is six double-color LEDs, and when there is no one in the corresponding carriage bed, the status indicator light is green, when there is someone in the corresponding carriage bed, the status indicator light is red, and when maintenance marking is needed, the status indicator light is yellow. The display panel communication unit communicates with the control module, and interacts with carriage scene data, bed occupancy status data, carriage number data and the like; and the display panel microprocessor controls the indicator light and the nixie tube according to the data received by the display panel communication unit, and displays carriage bed occupancy status data, carriage number data and the like.

[0013] The display panel is installed on the outside of the carriage and above the carriage door, and is used for indicating a carriage number and the presence of people in each bed in the carriage.

[0014] The indicator light driver includes control triodes Q1 and Q2, current limiting resistors R1, R2 and R3, and the status indicator light includes double-color light LED1,

[0015] When the millimeter wave radar identifies that there is no activity or micro-motion feature in the bed area echo in a period, the millimeter wave radar judges that the bed is empty, and outputs a state signal; after the display panel communication unit receives the signal, the display panel microprocessor controls the corresponding GPIO to output a high level, the control triode Q2 of the corresponding bed is saturated and turned on, the 3-pin of Q2 is equivalent to ground, the LED1 of the corresponding bed is turned on and lit, and the 3 status indicator lights of the display panel are green;

[0016] When the millimeter wave radar monitors that there is a human body in the corresponding bed and the human body lasts for a certain time, the millimeter wave radar identifies that the bed is occupied, and outputs a state signal; after the display panel communication unit receives the signal, the display panel microprocessor controls the corresponding GPIO to output a high level, the Q1 of the corresponding bed is saturated and turned on, the 3-pin of Q1 is equivalent to ground, the LED1 of the corresponding bed is turned on and lit, and the 3 status indicator lights of the display panel are red;

[0017] When maintenance or other special marking is needed, the display panel microprocessor controls the indicator light driver to simultaneously saturate and turn on all Q1 and Q2, so that all the LED1 of the corresponding beds are lit in yellow.

[0018] Compared with the prior art, the display panel has the following beneficial effects:

[0019] The millimeter wave radar main body can be used for train sleeper compartment bed occupancy state, passenger behavior monitoring, compartment defense early warning and the like functions; the train sleeper compartment size and layout are basically same, and installation and adjustment work required by the millimeter wave radar in complex and various use scenes is avoided. The PC end host computer in the control room can realize real-time monitoring of each compartment state, and privacy controversy risk involved in video monitoring does not exist; effectively solve the special demand of the market on the train sleeper compartment which belongs to both public transport tool and environment with privacy exposure risk, and has requirements on safety and privacy. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a system block diagram of the utility model;

[0021] Figure 2 It is a control module principle block diagram in the utility model;

[0022] Figure 3 It is a display panel principle block diagram in the utility model;

[0023] Figure 4 It is a indicating lamp drive circuit principle schematic diagram in the utility model.

[0024] The drawing mark: 1, millimeter wave radar;101, antenna unit;102, main control unit;103, millimeter wave radar communication unit;2, control module;201, control module microprocessor;202, relay drive;203, control relay;204, CAN bus module;205, external interface;206, control module communication unit;3, display panel;301, display panel microprocessor;302, nixie tube drive;303, nixie tube;304, indicating lamp drive;305, state indicating lamp;306, display panel communication unit. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0026] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "installation", "setting", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] As shown in the figure, Figure 1 Figure 3 The train sleeper compartment personnel detection device based on millimeter wave radar of the embodiment, comprising:

[0030] Millimeter wave radar 1 is installed in the compartment door opposite, above the window in the compartment;

[0031] Control module 2 is connected with millimeter wave radar 1, for power supply and data transmission;And

[0032] Display panel 3 is connected with control module 2;

[0033] Through millimeter wave radar 1, the data in the compartment is detected, the data is transported to control module 2 and interacts with control module 2, and finally the data information is displayed on display panel 3.Millimeter wave radar 1 and display panel 3 are connected through control module 2, and a group of RS485 is used for communication between the three modules, and a bus network is formed.RS485 has long communication distance, its transceiver cost is low, supports multiple node connection, physical connection is simpler and more stable;It is widely used in short-distance equipment and module communication.

[0034] Millimeter wave radar 1 includes antenna unit 101, main control unit 102 and millimeter wave radar communication unit 103, millimeter wave radar communication unit 103 is connected with control module 2, and communication is carried out;

[0035] The control module 2 comprises a control module microprocessor 201, a relay driver 202, a control relay 203, a CAN bus module 204, an external interface 205 and a control module communication unit 206. The control module microprocessor 201 is connected with the relay driver 202, the CAN bus module 204 and the control module communication unit 206. The relay driver 202 is connected with the control relay 203. The external interface 205 is connected with the control relay 203, the CAN bus module 204 and the control module communication unit 206. The external interface 205 comprises a power input, an output, an interface of the control module communication unit 206, an interface of the CAN bus module 204 and an interface of the control relay 203. The system is connected with the train through the CAN bus. The nodes on the CAN bus are not divided into masters and slaves. Any node can actively send information to other nodes on the network at any time. The communication mode is flexible. The CAN can realize point-to-point, one-to-multiple point and global broadcast transmission and reception of data through message filtering without special "scheduling". The direct communication distance of the CAN is up to 10 km (below 5 kbps). The highest communication rate is up to 1 Mbps (the longest communication distance is 40 m). The number of nodes on the CAN is up to 110. The CAN bus communication has been widely used in the vehicle-mounted field. The PC host computer connected through the CAN bus laid to the control room is supported. The state of each car is monitored in real time through the host computer. The display information of the display panel of each car can be edited through the host computer. The system is maintained by updating the firmware.

[0036] The display panel 3 comprises a display panel microprocessor 301, a nixie tube driver 302, a nixie tube 303, an indicator lamp driver 304, a state indicator lamp 305 and a display panel communication unit 306. The display panel microprocessor 301 is connected with the nixie tube driver 302, the indicator lamp driver 304 and the display panel communication unit 306. The nixie tube driver 302 is connected with the nixie tube 303. The indicator lamp driver 304 is connected with the state indicator lamp 305.

[0037] The display panel 3 is installed on the outside of the car and above the car door, which is used to indicate the car number and the existence of the personnel in each bed.

[0038] In use, the millimeter wave radar 1 is installed above the window of the car, in the middle position of the bed on both sides, and the detection surface faces the car door. The millimeter wave radar 1 monitors the car area of the train, judges and identifies the functions of bed occupancy state, passenger behavior monitoring and car defense early warning.

[0039] Bed occupancy state monitoring function: after the radar is installed, its position and the train bed are relatively fixed. The millimeter wave radar 1 identifies the bed as empty according to the comparison of the bed area echo on both sides of the car, and the bed area echo has no activity or micro-motion characteristics in the identification period. The bed is identified as occupied when there is human activity or micro-motion characteristics.

[0040] Car passenger behavior state monitoring function: the millimeter wave radar 1 monitors the car in real time, compares the bed area echo point cloud information of the bed area and the central aisle area of the car, and combines the change time period, target moving area range and other characteristics to distinguish and identify the active state, slight state and sleep state.

[0041] Car defense early warning function: when the system enters the "sleep state", the millimeter wave radar 1 starts the defense early warning mode for the central bed of the car; when the car door is open, if the millimeter wave radar 1 detects that the living body target in the front door area is close, stays or other conditions, the defense early warning is triggered; the control module 2 controls the external connected ceiling lamp or alarm to work, which plays a role of early warning, warning and driving away. When the car door is closed, the millimeter wave radar 1 immediately triggers the defense early warning according to the echo detection that the car door is opened.

[0042] Bed occupancy state indication. Figure 4 The circuit principle diagram of the indicator lamp driving 304, wherein Q1 and Q2 are control triodes; R1, R2 and R3 are current limiting resistors; and the state indicating lamp 305 adopts a double-color lamp LED1.

[0043] The millimeter wave radar 1 identifies the bed as empty according to the comparison of the bed area echo on both sides of the car, and the bed area echo has no activity or micro-motion characteristics in the identification period. The millimeter wave radar communication unit 103 outputs the state signal through the RS485 bus; after the display panel communication unit 306 receives the signal, the corresponding GPIO outputs high level through the display panel microprocessor 301, controls the display panel indicating lamp driving 304 circuit corresponding to the bed of Q2 saturated conduction (Q1 cut-off), and the 3 pins of Q2 are equivalent to ground. The LED1 corresponding to the bed is turned on and the state indicating lamp 305 is green. When the millimeter wave radar 1 monitors that the corresponding bed exists human body and lasts for a certain time, the bed is identified as occupied, the millimeter wave radar communication unit 103 outputs the state signal through the RS485 bus, and the display panel communication unit 306 receives the signal. After the display panel microprocessor 301 controls the corresponding GPIO to output high level, the display panel indicating lamp driving 304 circuit corresponding to the bed of Q1 saturated conduction (Q2 cut-off) is controlled, and the 3 pins of Q1 are equivalent to ground. The LED1 corresponding to the bed is turned on and the state indicating lamp 305 is red. When maintenance or other special marking is needed, the display panel microprocessor 301 controls the display panel indicating lamp driving 304 circuit of all Q1 and Q2 to be saturated conduction at the same time, so that all the LED1 corresponding to the bed is turned on to yellow.

[0044] The carriage passenger behavior state monitoring function, the millimeter wave radar 1 monitors the carriage in real time, the millimeter wave radar master control unit 102 identifies and divides the passengers into active state, slightly rest state and sleep state through real-time echo comparison, combined with bed, ground and other carriage environment fixed point cloud information, target moving area, change duration, period and other characteristics; used for the starting condition of carriage defense early warning; at the same time, the millimeter wave radar communication unit 103 outputs the carriage passenger behavior state information data, the control module communication unit 206 receives the data and outputs to the control module CAN bus module 204 through the control module microprocessor 201, and then outputs to the train CAN bus through the control module external interface 205; the train control room connects the CAN bus through the terminal equipment such as PC installed with corresponding APP, and displays the passenger behavior state of each carriage in real time on the PC host computer.

[0045] The above is only the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described in detail. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A millimeter wave radar-based train sleeper compartment personnel detection device, characterized by, The utility model relates to a kind of vehicle compartment number display system, including: Millimeter wave radar (1) is installed in the vehicle compartment, and it is opposite to the vehicle door, above the window; Control module (2) is connected with millimeter wave radar (1), for power supply and data transmission;And Display panel (3) is connected with control module (2); The millimeter wave radar (1) includes antenna unit (101), main control unit (102) and millimeter wave radar communication unit (103), the millimeter wave radar communication unit (103) is connected with control module (2), and communication is carried out;Data is transported to control module (2) and is interacted with control module (2) by millimeter wave radar (1) detection vehicle compartment data, and finally data information is shown on display panel (3).

2. The millimeter wave radar-based train sleeper car personnel detection apparatus of claim 1, wherein: The control module (2) includes control module microprocessor (201), relay drive (202), material control relay (203), CAN bus module (204), external interface (205) and control module communication unit (206), the control module microprocessor (201) is connected with relay drive (202), CAN bus module (204) and control module communication unit (206), the relay drive (202) is connected with material control relay (203), and the external interface (205) is connected with material control relay (203), CAN bus module (204) and control module communication unit (206).

3. The millimeter wave radar based train sleeper car personnel detection apparatus of claim 1, wherein: The display panel (3) includes display panel microprocessor (301), nixie tube drive (302), nixie tube (303), indicator light drive (304), status indicator light (305) and display panel communication unit (306);The display panel microprocessor (301) is connected with nixie tube drive (302), indicator light drive (304) and display panel communication unit (306);The nixie tube drive (302) is connected with nixie tube (303), and the indicator light drive (304) is connected with status indicator light (305).

4. The millimeter-wave radar-based train sleeper compartment personnel detection apparatus according to any one of claims 1 to 3, characterized by: The display panel (3) is installed on the outside of the vehicle compartment, above the vehicle door, for indicating the number of the vehicle compartment and the presence of each bed in the vehicle compartment.

5. The millimeter wave radar based train sleeper car personnel detection apparatus of claim 3, wherein: The indicator light drive (304) includes control triode Q1 and Q2, current-limiting resistor R1, R2 and R3, and the status indicator light (305) includes double-color lamp LED1; The millimeter wave radar (1) identifies the bed as empty when there is no activity or micro-motion feature in the bed area echo in the period according to the bed area echo contrast on both sides of the vehicle compartment;The millimeter wave radar (1) outputs a status signal;After the display panel communication unit (306) receives the signal, the corresponding GPIO is controlled to output high level by the display panel microprocessor (301), the control triode Q2 of the corresponding bed is saturated and turned on, the 3-pin of Q2 is equivalent to ground, the LED1 of the corresponding bed is turned on and lit, and the status indicator light of the display panel 3 is green. When the millimeter wave radar (1) monitors the presence of a human body corresponding to the bed and lasts for a certain period of time, it is identified as bed occupancy, and the millimeter wave radar (1) outputs a state signal; after the display panel communication unit (306) receives the signal, it controls the corresponding GPIO to output high level through the display panel microprocessor (301), Q1 of the corresponding bed is saturated and turned on, the 3-pin of Q1 is equivalent to ground, LED1 of the corresponding bed is turned on and lit, and the 3-state indicator light of the display panel is red; When maintenance or other special markings are needed, the display panel microprocessor (301) controls the indicator light driver (304) to saturate and turn on all Q1 and Q2 at the same time, so that all the corresponding bed LED1 is lit yellow.

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