Circuit control system for unlocking electromagnetic valve lock by using PKE (passive keyless entry)

Abstract

The circuit control system comprises a PKE remote controller, a PKE host, an electromagnetic valve knob lock and an electrical connection circuit, the PKE host and the electromagnetic valve knob lock are installed on a whole vehicle, after the whole vehicle circuit is successfully connected according to a figure 3, the functions of close unlocking and away locking can be achieved through the PKE remote controller, and the PKE host and the electromagnetic valve knob lock can be unlocked through the PKE remote controller. The method has the advantages that the whole vehicle is intelligent, the characteristic that an electric vehicle in the current industry needs to be unlocked by carrying a Bluetooth device for intelligent approaching unlocking is improved, point-to-point and one-to-one approaching unlocking is achieved by applying a standard whole vehicle remote controller, the mutual unlocking rate is lower than 0.1%, and meanwhile the intelligent experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention relates to the field of control systems, and specifically to a circuit control system for unlocking a solenoid valve lock by approaching with PKE. Background Art

[0002] Electric bicycles, also known as "electric vehicles", are pure electric motor vehicles powered by a battery (electric battery) and driven by an electric motor (DC, AC, series excitation, shunt excitation). In recent years, they have been very widely popularized in China;

[0003] Domestic electric bicycles are mainly used for sightseeing passenger transportation, security patrol, and cargo handling. The main use of electric sightseeing vehicles is for passenger transportation in places such as parks, scenic spots, leisure resorts, universities, hospitals, golf courses, and real estate companies. The main use of electric patrol vehicles is for security patrol in station squares and crowded places. The main use of electric cargo handling vehicles is in factories, port terminals, logistics warehouses, etc. The main use of electric sanitation vehicles is for cleaning sites, washing roads, transporting garbage, etc. The service life of an electric bicycle is generally 8 to 12 years, and the service life of its battery is generally 1 - 4 years;

[0004] Under the existing technology, there are two states for starting the whole vehicle of an electric vehicle. One is unlocking with a pure mechanical key, and the other is unlocking through the vehicle control unit. However, there is no direct point - to - point control through PKE technology for the time being. The industry uses APP or Bluetooth to achieve keyless start, and the cost is relatively high. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the existing technology, the present invention provides a circuit control system for unlocking a solenoid valve lock by approaching with PKE, which solves the problem of relatively high cost in the existing technology of using APP or Bluetooth to achieve keyless start.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions: A circuit control system for unlocking a solenoid valve lock by approaching with PKE, including a PKE main unit part and a PKE remote control disposed inside the vehicle body;

[0009] The PKE remote control is composed of a microcontroller, a high - frequency transmitting circuit, a low - frequency receiving circuit, and a three - axis receiving antenna. The three - axis receiving antenna can sense radio frequency signals in any direction through an analog front - end;

[0010] The PKE main unit includes a trigger, an LF antenna, a PKE receiver, and an execution component. The trigger is connected to the LF transmitter, and the execution component is connected to the PKE receiver:

[0011] The PKE receiver includes an RF receiver, a decoder, and a driver. The decoder has an input end connected to the RF receiver and an output end connected to the driver, and the driver is connected to an actuator.

[0012] Preferably, a LE antenna is used for signal connection between the PKE remote control and the PKE host.

[0013] Preferably, the trigger includes a solenoid valve lock assembly disposed inside the vehicle body, and the actuator includes a vehicle switch.

[0014] Preferably, the wireless radio frequency module inside the PKE host uses an RFID chip of NXP.

[0015] Preferably, after the PKE remote control approaches the PKE host, RFID wireless radio frequency technology is used to achieve handshake interconnection. After the PKE host receives an instruction, it pulls down the 5V output signal of the solenoid valve to unlock the entire vehicle. After the PKE remote control moves away from the host, the connection is disconnected. After the PKE receives the instruction, it restores the 5V output of the solenoid valve lock to lock the entire vehicle.

[0016] Preferably, the PKE host uses the XTBCM-029 model, the PKE remote control uses the Audi model, and the solenoid valve lock uses the STD-39D3 model.

[0017] (III) Beneficial effects

[0018] The present invention provides a circuit control system for unlocking a solenoid valve lock by approaching with PKE, having the following beneficial effects:

[0019] 1. By improving the intelligent approach unlocking of electric vehicles in the current industry, which requires carrying a Bluetooth device to unlock, the present invention uses the standard vehicle remote control to achieve point-to-point and one-to-one approach unlocking, with an inter-opening rate lower than 1‰, and at the same time enhances the user's intelligent experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall process of the present invention;

[0021] Figure 2 It is a flowchart of unlocking of the present invention;

[0022] Figure 3 It is a wiring schematic diagram of the PKE anti-theft device of the present invention.

[0023] In the figure: 1. PKE remote control; 2. PKE host; 3. Solenoid valve knob lock. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0025] Embodiment:

[0026] As Figures 1-3 shown, the embodiment of the present invention provides a circuit control system for unlocking a solenoid valve lock by approaching with PKE, including a PKE host part and a PKE remote control provided inside the vehicle body;

[0027] The PKE remote control consists of a microcontroller, a high-frequency transmitting circuit, a low-frequency receiving circuit, and a three-axis receiving antenna. The three-axis receiving antenna can sense radio frequency signals in any direction through an analog front end. The PKE remote control is powered by a 3V button battery. In the absence of low-frequency excitation, the PKE remote control operates in the standard RKE mode. When receiving an effective low-frequency excitation, the microcontroller responds as if pressing a virtual button, pulling down the 5V output signal of the solenoid valve to achieve vehicle unlocking. On the contrary, when the PKE remote control moves away from the host and disconnects, after receiving the PKE command, the solenoid valve lock restores the 5V output to achieve vehicle locking;

[0028] The PKE remote control realizes the reception of the low-frequency wake-up signal sent by the PKE host through the 3-channel analog front end of PIC16F639. PIC16F639 has three antenna connection pins (LCX, LCY, LCZ) with an analog input sensitivity as high as 3mvpp. By connecting three antennas respectively pointing to the x-axis, y-axis, and z-axis, the PKE remote control can receive signals from any direction at any time, thereby reducing the possibility of signal loss caused by the directivity of the antenna;

[0029] The PKE host includes a trigger, an LF antenna, a PKE receiver, and an actuator. The trigger is connected to the LF transmitter, and the actuator is connected to the PKE receiver. In the entire PKE unlocking system, the low-frequency transmission uses 125KHz as the uplink, which is sent from the vehicle end to the key end; the radio frequency reception uses 315MHz or 434MHz as the downlink, which is sent from the key end to the vehicle end. The reason for using 125KHz is, on the one hand, to be compatible with relevant anti-theft technologies. More importantly, the 125KHz signal is sensitive to distance, which can achieve precise distance detection and play a key positioning role. At the same time, the entire RKE system uses a radio frequency communication method with a radio frequency of 315MHz or 433MHz. This communication method communicates through radio waves, allowing two-way communication between the remote control and the vehicle, thus realizing functions such as remote control unlocking and one-to-one proximity unlocking:

[0030] The PKE receiver includes an RF receiver, a decoder, and a driver. The decoder has an input terminal connected to the RF receiver and an output terminal connected to the driver. The driver is connected to the actuator. The PKE remote control and the PKE host are signal-connected using an LE antenna. The trigger includes a solenoid valve lock assembly installed inside the vehicle body. The actuator includes a vehicle switch. The wireless radio frequency module inside the PKE host uses an RFID chip from NXP. After the PKE remote control approaches the PKE host, handshake interconnection is achieved using RFID wireless radio frequency technology. After the PKE host receives the instruction, it pulls down the 5V output signal of the solenoid valve to unlock the entire vehicle. After the PKE remote control moves away from the host, the connection is disconnected. After the PKE receives the instruction, it allows the solenoid valve lock to restore the 5V output to lock the entire vehicle. The principle of the solenoid valve lock assembly is as follows: After the PKE host receives the instruction, it sends a signal to the car lock, the electromagnetic relay will close, the magnetic field will disappear, and the lock core will lose its attraction and become easy to turn. At this time, the car owner can use the key or manually turn the car lock to unlock and restore the lock core to its original state, and the car lock will open. After the PKE remote control moves away from the host, the connection is disconnected. After the PKE receives the instruction, it triggers the internal electromagnetic relay, and the electromagnetic relay will open a circuit. There is an electromagnet in this circuit. When the electromagnetic relay is opened, the electromagnet will generate a magnetic field. When the car lock receives the signal, the electromagnetic relay opens, and the magnetic field generated by the electromagnet will attract the lock core. The lock core is made of metal and has good electrical conductivity. It will be firmly attracted by the adsorption force, preventing the lock core from turning. In this way, the car lock will automatically lock and remain in the closed state.

[0031] The PKE host uses the XTBCM-029 model, the PKE remote control uses the Audi model, and the solenoid valve lock uses the STD-39D3 model. Both the PKE host and the PKE remote control are from Suzhou Xuantu Information Technology Co., Ltd., while the solenoid valve lock is from Ruian Sutian Motorcycle Parts Co., Ltd.

[0032] The following is the specific working principle of the Bluetooth anti-theft lock:

[0033] (1) After the PKE remote control approaches the PKE host, handshake interconnection is achieved using RFID wireless radio frequency technology. After the 4th port receives the interconnection signal, the lock cover light flashes, indicating successful connection and the vehicle being disarmed;

[0034] (2) After the PKE host receives the instruction, the knob lock button is pressed. After the 11th port receives the trigger signal, it pulls down the 5V output signal of the solenoid valve. According to the normal unlocking logic, rotate the knob to the right to power on the vehicle and unlock it;

[0035] (3) After rotating the knob to the left and the person has not left, the PKE host remains connected to the PKE anti-theft device. At this time, the lock cover light of the knob lock continues to flash, indicating that the vehicle is not armed;

[0036] (4) After the PKE remote control moves away from the host, the lock cover light of the knob lock goes out, and the host makes a "beep" sound, indicating disconnection. After the PKE receives the instruction, it restores the 5V output of the 11th port of the solenoid valve lock to arm the vehicle and lock it;

[0037] (5) In the armed state, when the 6th port is triggered by a vibration or wheel movement signal, the 12th port and the controller pull down the voltage to achieve the vehicle anti-theft state;

[0038] (6) When the vehicle is in the disarmed state, press the knob lock button twice continuously. The 8th and 9th ports are in a conducting state, outputting 5V voltage to the solenoid valve to start the lock plate motor and achieve the function of opening the seat cushion.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit control system for unlocking a solenoid valve lock by approaching with PKE, characterized in that, It includes a PKE host part and a PKE remote control set inside the vehicle body; The PKE remote control consists of a microcontroller, a high-frequency transmitting circuit, a low-frequency receiving circuit, and a 3-axis receiving antenna. The 3-axis receiving antenna can sense radio frequency signals in any direction through an analog front end; The PKE host includes a trigger, an LF antenna, a PKE receiver, and an execution component. The trigger is connected to the LF transmitter, and the execution component is connected to the PKE receiver; The PKE receiver includes an RF receiver, a decoder, and a driver. The decoder has an input end connected to the RF receiver, the decoder has an output end connected to the driver, and the driver is connected to the execution component.

2. The circuit control system for unlocking a solenoid valve lock by proximity using PKE according to claim 1, wherein: A LE antenna is used for signal connection between the PKE remote control and the PKE host.

3. The circuit control system for unlocking a solenoid valve lock by approaching with PKE according to claim 1, wherein: The trigger includes a solenoid valve lock assembly set inside the vehicle body, and the execution component includes a vehicle switch.

4. The circuit control system for unlocking a solenoid valve lock by approaching with PKE according to claim 1, wherein: The radio frequency module inside the PKE host uses an RFID chip of NXP.

5. The circuit control system for unlocking a solenoid valve lock by proximity using PKE according to claim 1, wherein: After the PKE remote control approaches the PKE host, handshake interconnection is achieved using RFID radio frequency technology. After the PKE host receives the instruction, it pulls down the 5V output signal of the solenoid valve to unlock the whole vehicle. After the PKE remote control moves away from the host, the connection is disconnected. After the PKE receives the instruction, it restores the 5V output of the solenoid valve lock to lock the whole vehicle.

6. The circuit control system for unlocking a solenoid valve lock by proximity using PKE according to claim 1, characterized in that: The PKE host uses the XTBCM-029 model, the PKE remote control uses the Audi model, and the solenoid valve lock uses the STD-39D3 model.

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