Intelligent access control system for cab based on RFID (Radio Frequency Identification Device) technology and control method of intelligent access control system

Abstract

The invention relates to an intelligent access control system, in particular to a driver's cab intelligent access control system based on an RFID technology and a control method of the driver's cab intelligent access control system. The driver's cab intelligent access control system based on the RFID technology comprises an intelligent controller, the intelligent controller is connected with a central control touch screen, a reader-writer, an illuminance sensor, a temperature sensor, a heating system relay, an air conditioning system relay, a door lock motor relay, an illumination driving loop and an intelligent seat relay, and the heating system relay is connected with a heating system. The air-conditioning system relay is connected with an air-conditioning system, the door lock motor relay is connected with a door lock motor, the illumination driving loop is connected with cab illumination, the intelligent seat relay is connected with an intelligent seat, and the reader-writer is connected with an electronic key provided with an RFID chip. According to the structure, the door lock is automatically opened in advance before a driver enters a cab, the workload of the driver is reduced, and the intelligence and automation level of the locomotive cab door is improved.

Description

Technical Field

[0001] The invention relates to an access control system, and in particular to an intelligent access control system for a driver's cab based on RFID technology and a control method thereof. Background Art

[0002] In the operation of traditional locomotives, most operations are still performed manually, including the lighting, air conditioning system, heater, seat and door switch of the driver's cab. Long-term manual operation can easily lead to high workload and low efficiency for the driver, potential safety hazards, and poor driving experience in the driver's cab. Summary of the invention

[0003] The present invention aims to solve the above-mentioned defects and provides a driver's cab intelligent access control system based on RFID technology.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve its technical problems is: this RFID technology-based driver's cab intelligent access control system includes an intelligent controller, which is connected to the central control touch screen, a reader / writer, an illumination sensor, a temperature sensor, a heating system relay, an air-conditioning system relay, a door lock motor relay, a lighting drive circuit and an intelligent seat relay. The heating system relay is connected to the heating system, the air-conditioning system relay is connected to the air-conditioning system, the door lock motor relay is connected to the door lock motor, the lighting drive circuit is connected to the driver's cab lighting, the intelligent seat relay is connected to the intelligent seat, and the reader / writer is connected to an electronic key provided with an RFID chip.

[0005] According to another embodiment of the present invention, the central control touch screen further includes a remote / local status indicator light, a remote / local touch switch, a door open / close touch switch, an air conditioner on / off touch switch, a heater on / off touch switch, a lighting on / off touch switch, and a seat heater / fan touch switch.

[0006] According to another embodiment of the present invention, the electronic key further includes recording the driver's personal information in the electronic key, and sending the driver's personal information to the reader / writer in the form of a radio frequency signal.

[0007] According to another embodiment of the present invention, the reader is further used to receive the driver's personal information sent by the electronic key, and upload data to the intelligent controller via wired or wireless means, and the distance at which the reader receives the radio frequency signal is adjusted by adjusting the power of the reader.

[0008] According to another embodiment of the present invention, the intelligent controller further includes a PLC or a single-chip microcomputer, which receives uploaded signals from a reader / writer, a central control touch screen, an illuminance sensor and a temperature sensor, processes the information, and then issues control instructions to the outside to perform related actions; the intelligent controller can receive signals from the reader / writer, send an output signal to the door lock motor relay, and control the door of the driver's cab to open; the intelligent controller can receive signals from the reader / writer and the illuminance sensor, send a PWM signal to the lighting drive circuit, control the lighting in the driver's cab to turn on and adjust the brightness of the lighting; the intelligent controller can receive signals from the temperature sensor and the reader / writer, send control instructions to the air-conditioning system switch, and control the operation of the air-conditioning system in the driver's cab.

[0009] According to another embodiment of the present invention, the intelligent controller is further comprised of a microcomputer system or a PLC system.

[0010] A control method for a driver's cab intelligent access control system based on RFID technology, characterized in that the method comprises: The first step is that the driver brings the electronic key close to the locomotive and enters the setting range of the reader. The reader receives the driver's personal signal sent by the RFID chip inside the electronic key. The reader sends the signal to the intelligent controller to determine whether the driver is authorized normally and store the judgment result in the database. If it is determined to be authorized normally, the console mode switch is in manual state. At this time, the driver's room lighting, air conditioning, heater, and smart seat can be manually controlled through the console touch screen; if the console mode switch is in automatic state, the system automatically collects illumination signals and automatically adjusts the brightness and color temperature of the lighting system; the system automatically collects temperature signals inside and outside the driver's room, and automatically controls the air conditioning system, heater and smart seat, so that the temperature in the driver's room is controlled within the range of 18~23℃; The second step is that the driver's cab automatically opens the door, and when it detects the driver entering, it automatically closes the door.

[0011] The beneficial effects of the present invention are: 1. RFID technology is introduced to identify and authenticate the driver's personal information, and automatically upload it to the intelligent controller to realize the driver's identity authentication; 2. It realizes automatic door unlocking before the driver enters the cab, which reduces the driver's workload and improves the intelligence and automation level of the locomotive cab door; 3. It can automatically turn on the interior lighting and door lights of the driver's cab before the driver enters the cab, and automatically adjust the brightness of the lights according to the brightness of the interior lighting of the driver's cab, which improves the intelligence level of the lighting system and thus improves the driver's experience; 4. Before the driver enters the cab, the air conditioner or heater in the locomotive driver's cab is controlled in advance, so that the temperature in the driver's cab is maintained at the set value, realizing intelligent control of the temperature in the locomotive driver's cab and improving the comfort of the locomotive.

[0012] 5. According to the driver's identity collected by RFID technology, the driver's seat is adjusted to the appropriate shape and temperature in advance, such as the height of the shoulder rest, the tilt angle of the copy, etc., to improve the comfort of the locomotive driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural diagram of a lighting control system; Figure 3 It is a structural diagram of the door lock motor control circuit. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The intelligent access control system of the locomotive's intelligent driver's cab adopts RFID technology to realize the driver's identity authentication in a contactless manner, and completes the entry of the driver's personal information and transmits it to the intelligent controller; the intelligent controller issues control instructions to realize the power-on and logical control of the locomotive's cab lighting, air conditioning, heater, seats and cab doors.

[0017] like Figure 1 As shown in the figure, the intelligent controller is connected to the central control touch screen, the reader / writer, the illumination sensor, the temperature sensor, the heating system relay, the air-conditioning system relay, the door lock motor relay, the lighting drive circuit and the intelligent seat relay. The heating system relay is connected to the heating system, the air-conditioning system relay is connected to the air-conditioning system, the door lock motor relay is connected to the door lock motor, the lighting drive circuit is connected to the driver's room lighting, the intelligent seat relay is connected to the intelligent seat, and the reader / writer is connected to the electronic key with an RFID chip.

[0018] The central control touch screen includes remote / local status indicator light, remote / local touch switch, door open / close touch switch, air conditioning on / off touch switch, heater on / off touch switch, lighting on / off touch switch, and seat heater / fan touch switch.

[0019] The electronic key records the driver's personal information and sends it to the reader in the form of a radio frequency signal. The RFID chip in the electronic key can adopt three solutions: Solution 1: RFID uses a passive chip that can receive the radio frequency signal sent by the reader. When the electronic key enters the effective recognition range of the reader, the RFID chip receives the radio frequency signal and senses the energy to send out the information stored in the RFID chip. This solution is relatively mature and the most widely used.

[0020] Solution 2: RFID uses active chips, which have the characteristics of long-distance automatic identification, so it is applied to some large environments accordingly. Its disadvantage is that it requires an external power supply.

[0021] Solution 3: The RFID technology in the electronic key can be replaced by low-power technologies such as Bluetooth and Zigbee. It only requires adding a battery as a power source on the basis of the original solution.

[0022] Figure 1 This is the hardware composition diagram of the intelligent access control system for intelligent locomotives. The functions of each part are as follows: The electronic key is used to record the driver's personal information and send the driver's personal information to the reader in the form of a radio frequency signal; The reader is used to receive the driver's personal information sent by the electronic key, and upload the data to the intelligent controller via wired (Ethernet or serial communication) or wireless (4G / 5G). The distance at which the reader receives the RF signal can be adjusted by adjusting the power of the reader; The intelligent controller can be in the form of a PLC or a single-chip microcomputer. It can receive uploaded signals from readers, touch screens, illumination sensors, and temperature sensors, process the information, and then issue control instructions to the outside to perform related actions.

[0023] The intelligent controller can receive the signal from the reader / writer, send an output signal to the door lock motor relay, and control the opening of the driver's cab door.

[0024] The intelligent controller can receive signals from the reader and the illumination sensor, send a PWM signal to the lighting drive circuit, control the lighting in the driver's cab to turn on and adjust the brightness of the lighting.

[0025] The intelligent controller can receive signals from temperature sensors and readers, send control instructions to the air-conditioning system switch, and control the operation of the air-conditioning system in the driver's cab.

[0026] The illuminance sensor is mainly used to detect the light intensity in the driver's cab in real time, and is used as a basis for adjusting the brightness of the driver's cab lighting.

[0027] The temperature sensor is mainly used to detect the temperature of the driver's cab in real time, and is used as a basis for controlling the driver's cab air-conditioning system, heater, smart seat heater and fan.

[0028] The lighting drive circuit is mainly used to control the power supply, brightness and color temperature of the driver's cab lighting.

[0029] The door lock motor relay is mainly used to power the door lock motor. Through this relay, the door lock motor can be rotated forward and reverse, thereby controlling the opening and closing of the driver's cab door. In addition, it can also be manually controlled through the door opening button in the driver's cab.

[0030] The air conditioning system relay is mainly used to realize the power supply, mode and temperature value control of the air conditioning system.

[0031] The heater system relay is mainly used to realize the power supply and control of the heating system.

[0032] Smart seat relays are mainly used to control the shape and temperature of smart seats.

[0033] The selection switch on the operating console is mainly used to switch the remote / local mode to realize manual control of doors, air conditioners and heaters.

[0034] 2. Hardware system design: 1) Power system design: The power supply system is mainly used to power the reader / writer, intelligent controller, door lock motor, lighting, air conditioning system, heater and intelligent seat. The respective power supply voltages are shown in Table 1:

[0035] RFID loop: The RFID circuit mainly consists of two parts: the RFID chip and the reader. Considering the actual working conditions, when selecting the model, we chose to install the reader on the locomotive and install the RFID chip inside the electronic key, which is carried by the driver.

[0036] The reader output power is adjustable and has an independent antenna. The detection distance of the reader can be changed by adjusting the reader output power.

[0037] We use a passive method for RFID chips, which do not have their own power supply. The power supply is triggered by the pulse signal sent by the reader. When the driver wears the electronic key and enters the effective detection range of the reader, the electromagnetic wave sent by the reader charges the RFID chip, and the RFID chip sends a signal to realize information transmission.

[0038] Lighting circuit design: like Figure 2 As shown in the figure, the lighting circuit consists of three parts: intelligent controller, PWM controller and LED driver.

[0039] The intelligent controller is mainly used to receive illumination sensor signals and touch screen instructions, and send illumination and color temperature control signals to the lighting system; the PWM controller receives the intelligent controller signal and sends voltage signals and supply voltage to the LED driver; the LED driver directly controls the lighting fixtures.

[0040] Door lock motor control circuit: The door lock motor control circuit consists of two relays, which are used to control the forward and reverse rotation of the door lock motor to open and close the driver's cab door. Figure 3 As shown in the figure, K1 and K2 are two relays of the door lock motor. When K1 is energized, the motor rotates forward, and when K2 is energized, the motor rotates reversely. In order to prevent accidents during the control process, the K1 relay and the K2 relay are interlocked.

[0041] Central control touch screen: The central control touch screen is located on the operating console in the driver's cab and integrates virtual operation buttons and status indicators of various components.

[0042] A control method for a driver's cab intelligent access control system based on RFID technology, the method comprising: The first step is that the driver brings the electronic key close to the locomotive and enters the setting range of the reader. The reader receives the driver's personal signal sent by the RFID chip inside the electronic key. The reader sends the signal to the intelligent controller to determine whether the driver is authorized normally and store the judgment result in the database. If it is determined to be authorized normally, the console mode switch is in manual state. At this time, the driver's room lighting, air conditioning, heater, and smart seat can be manually controlled through the console touch screen; if the console mode switch is in automatic state, the system automatically collects illumination signals and automatically adjusts the brightness and color temperature of the lighting system; the system automatically collects temperature signals inside and outside the driver's room, and automatically controls the air conditioning system, heater and smart seat, so that the temperature in the driver's room is controlled within the range of 18~23℃; The second step is that the driver's cab automatically opens the door, and when it detects the driver entering, it automatically closes the door.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A driver's cab intelligent access control system based on RFID technology, characterized by: It includes an intelligent controller, which is connected to the central control touch screen, a reader / writer, an illumination sensor, a temperature sensor, a heating system relay, an air-conditioning system relay, a door lock motor relay, a lighting drive circuit and an intelligent seat relay. The heating system relay is connected to the heating system, the air-conditioning system relay is connected to the air-conditioning system, the door lock motor relay is connected to the door lock motor, the lighting drive circuit is connected to the driver's room lighting, the intelligent seat relay is connected to the intelligent seat, and the reader / writer is connected to an electronic key equipped with an RFID chip.

2. The driver's cab intelligent access control system based on RFID technology as claimed in claim 1, characterized in that: The central control touch screen includes a remote / local status indicator light, a remote / local touch switch, a door open / close touch switch, an air conditioner on / off touch switch, a heater on / off touch switch, a lighting on / off touch switch, and a seat heater / fan touch switch.

3. The driver's cab intelligent access control system based on RFID technology as claimed in claim 1, characterized in that: The electronic key records the driver's personal information and sends the driver's personal information to the reader / writer in the form of a radio frequency signal.

4. The driver's cab intelligent access control system based on RFID technology as claimed in claim 1, characterized in that: The reader is used to receive the driver's personal information sent by the electronic key, and upload data to the intelligent controller in a wired or wireless manner. The distance at which the reader receives the radio frequency signal is adjusted by adjusting the power of the reader.

5. The driver's cab intelligent access control system based on RFID technology as claimed in claim 1, characterized in that: The intelligent controller adopts the form of PLC or single-chip microcomputer, receives the uploaded signals from the reader / writer, central control touch screen, illumination sensor and temperature sensor, processes the information, and then sends control instructions to the outside to execute related actions; the intelligent controller can receive the signal from the reader / writer, send an output signal to the door lock motor relay, and control the door of the driver's cab to open; the intelligent controller can receive the signal from the reader / writer and the illumination sensor, send a PWM signal to the lighting drive circuit, control the lighting in the driver's cab to turn on and adjust the brightness of the lighting; the intelligent controller can receive the signal from the temperature sensor and the reader / writer, send a control instruction to the air-conditioning system switch, and control the operation of the air-conditioning system in the driver's cab.

6. The driver's cab intelligent access control system based on RFID technology as claimed in claim 1, characterized in that: The intelligent controller is a microcomputer system or a PLC system.

7. The control method of the driver's cab intelligent access control system based on RFID technology as claimed in claim 1 is characterized by: The method includes: The first step is that the driver brings the electronic key close to the locomotive and enters the setting range of the reader. The reader receives the driver's personal signal sent by the RFID chip inside the electronic key. The reader sends the signal to the intelligent controller to determine whether the driver is authorized normally and store the judgment result in the database. If it is determined to be authorized normally, the console mode switch is in manual state. At this time, the driver's room lighting, air conditioning, heater, and smart seat can be manually controlled through the console touch screen; if the console mode switch is in automatic state, the system automatically collects illumination signals and automatically adjusts the brightness and color temperature of the lighting system; the system automatically collects temperature signals inside and outside the driver's room, and automatically controls the air conditioning system, heater and smart seat, so that the temperature in the driver's room is controlled within the range of 18~23℃; The second step is that the driver's cab automatically opens the door, and when it detects the driver entering, it automatically closes the door.

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