Toll station management system

Abstract

The utility model provides a toll station management system, and belongs to the technical field of charge management. The toll station management system comprises a vehicle detection module, a first power supply control module, a first power supply, a timing module, a second power supply, a second power supply control module and a charge management module, the vehicle detection module is arranged at a vehicle entrance of the toll station, and the vehicle detection module is configured to detect vehicles entering the toll station; the control end of the first power supply control module is connected with the vehicle detection module, the first end of the first power supply control module is connected with a first power supply, the second end of the first power supply control module is connected with the power supply end of the timing module, and the output end of the timing module is connected with the control end of the second power supply control module. The first end of the second power supply control module is connected with the second power supply, and the second end is connected with the power supply end of the charging management module. According to the invention, electric energy waste caused by continuous operation of the toll station without vehicles can be avoided.

Description

Technical Field

[0001] This application relates to the field of toll management technology, and in particular to a toll station management system. Background Technology

[0002] In modern transportation systems, toll stations are key nodes, and the performance of their management systems is crucial. Currently, traditional toll station management systems generally suffer from serious energy waste. Many toll station management modules run continuously regardless of whether vehicles are passing through, resulting in the needless consumption of large amounts of electricity. This not only increases operating costs but also fails to meet the requirements of energy conservation and environmental protection in this era. Utility Model Content

[0003] This application provides a toll station management system to avoid the waste of electricity caused by the continuous operation of toll stations when there are no vehicles.

[0004] This application provides a toll station management system, including: a vehicle detection module, a first power supply control module, a first power supply, a timing module, a second power supply, a second power supply control module, and a toll management module;

[0005] The vehicle detection module is installed at the vehicle entrance of the toll station and is configured to detect vehicles entering the toll station.

[0006] The control terminal of the first power supply control module is connected to the vehicle detection module, the first terminal of the first power supply control module is connected to the first power source, the second terminal of the first power supply control module is connected to the power supply terminal of the timing module, the output terminal of the timing module is connected to the control terminal of the second power supply control module, the first terminal of the second power supply control module is connected to the second power source, and the second terminal of the second power supply control module is connected to the power supply terminal of the toll management module.

[0007] In one exemplary embodiment of this application, the vehicle detection module includes an excitation circuit and a vehicle detection circuit;

[0008] The excitation circuit is used to generate an excitation signal, and the vehicle detection circuit is configured to detect vehicles entering the toll station;

[0009] The excitation circuit is connected to the vehicle detection circuit, and the vehicle detection circuit is connected to the control terminal of the first power supply control module.

[0010] The excitation circuit includes: driver U1, inductor L1, diode D1, capacitor C1, rheostat RP1 and ground inductor L2;

[0011] The first end of the inductor L1 and the input end of the driver U1 are both used to connect to an external power supply. The control end of the driver U1 is connected to the second end of the inductor L1. The anode of the diode D1 is connected to the second end of the inductor L1. The cathode of the diode D1 is connected to the feedback end of the driver U1 through the rheostat RP1. The ground end of the driver U1 is grounded.

[0012] The cathode of the diode D1 is connected to the first end of the inductive coil L2, and the second end of the inductive coil L2 is grounded.

[0013] The first terminal of capacitor C1 is connected to the cathode of diode D1, and the second terminal of capacitor C1 is grounded.

[0014] In one exemplary embodiment of this application, the excitation circuit further includes: transistor Q1, resistor R1, resistor R11, and operational amplifier U2;

[0015] The collector of transistor Q1 is connected to the cathode of diode D1, and the emitter of transistor Q1 is connected to the first end of inductive coil L2.

[0016] The first end of the resistor R1 is connected to the second end of the inductive coil L2, and the resistor R1 is grounded;

[0017] The first end of the resistor R1 is connected to the inverting input of the operational amplifier U2. The non-inverting input of the operational amplifier U2 is used to connect to the reference voltage V1. The output of the operational amplifier U2 is connected to the inverting input of the operational amplifier U2 through the resistor R11. The output of the operational amplifier U2 is connected to the base of the transistor Q1.

[0018] In one exemplary embodiment of this application, the vehicle detection circuit includes: a detection coil L3, a resistor R4, a resistor R5, an operational amplifier U3, and a resistor R6;

[0019] The first end of the detection coil L3 is connected to the inverting input terminal of the operational amplifier U3 through the resistor R4, the second end of the detection coil L3 is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R5, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3 through the resistor R6, and the output terminal of the operational amplifier U3 is connected to the control terminal of the first power supply control module.

[0020] In one exemplary embodiment of this application, the first power supply control module includes: operational amplifier U4 and transistor Q2;

[0021] The non-inverting input of the operational amplifier U4 is connected to the output of the vehicle detection module. The output of the operational amplifier U4 is connected to the reference voltage V2. The output of the operational amplifier U4 is connected to the base of the transistor Q2. The collector of the transistor Q2 is connected to the power supply VCC, which serves as the first power supply.

[0022] The emitter of the transistor Q2 is connected to the power supply terminal of the timing module.

[0023] In one exemplary embodiment of this application, the timing module includes a counter U5, a capacitor C6, and a resistor R9;

[0024] The power supply terminal of the counter U5 is connected to the second terminal of the first power supply control module. The power supply terminal of the counter U5 is connected to the first terminal of the capacitor C6. The second terminal of the capacitor C6 is grounded through the resistor R9. The second terminal of the capacitor C6 is connected to the reset terminal of the counter U5. The output terminal of the counter U5 is connected to the control terminal of the second power supply control module.

[0025] In one exemplary embodiment of this application, the second power supply control module includes: a switching transistor Q3;

[0026] The control terminal of the switch Q3 is connected to the output terminal of the timing module. The first terminal of the switch Q3 is connected to the power supply VEE, which serves as a second power supply. The second terminal of the switch Q3 is connected to the power supply terminal of the toll management module.

[0027] The beneficial effects of the toll station management system provided in this application are as follows: This application uses a vehicle detection module to accurately detect vehicles at the toll station entrance. Power supply is only triggered when a vehicle is detected entering, enabling on-demand power supply to the toll management module. This effectively avoids energy waste caused by the module continuously operating when there are no vehicles, greatly improving energy efficiency and saving a significant amount of electricity. Secondly, the timing module in this application allows the toll management module to operate only during necessary periods when vehicles pass by, further optimizing energy consumption. This ensures that the toll station management system can stably and accurately complete the relevant tasks of the toll station while maintaining high efficiency and energy saving. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1This is a schematic diagram of the structure of a toll station management system provided in an embodiment of this application;

[0030] Figure 2 This is a circuit diagram of a toll station management system provided in an embodiment of this application. Detailed Implementation

[0031] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0032] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0033] The implementation of this application will be described in detail below with reference to the specific accompanying drawings:

[0034] Figure 1 This is a schematic diagram of a toll station management system provided in an embodiment of this application. (Refer to...) Figure 1 The toll station management system includes: a vehicle detection module, a first power supply control module, a first power supply, a timing module, a second power supply, a second power supply control module, and a toll management module;

[0035] The vehicle detection module is installed at the vehicle entrance of the toll station and is configured to detect vehicles entering the toll station.

[0036] The control terminal of the first power supply control module is connected to the vehicle detection module. The first terminal of the first power supply control module is connected to the first power source. The second terminal of the first power supply control module is connected to the power supply terminal of the timing module. The output terminal of the timing module is connected to the control terminal of the second power supply control module. The first terminal of the second power supply control module is connected to the second power source. The second terminal of the second power supply control module is connected to the power supply terminal of the toll management module.

[0037] In this embodiment, a vehicle detection module is installed at the vehicle entrance of the toll station, for example, an inductive loop is installed approximately 30-50 meters before the entrance. The inductive loop detects whether a vehicle is about to enter the toll station using the principle of electromagnetic induction. When a vehicle approaches, its metal parts can change the magnetic field around the inductive loop, thus being detected by the inductive loop.

[0038] After the vehicle detection module detects a vehicle, it sends a signal to the control terminal of the first power supply control module. Upon receiving this signal, the first power supply control module triggers its switching function, connecting the first power source to the power supply terminal of the timing module. The first power source provides power to the timing module, enabling it to start operating. Once powered, the timing module begins operation and can keep time according to a preset duration, while simultaneously outputting a control signal to the control terminal of the second power supply control module. This control signal informs the second power supply control module that a vehicle has entered the detection range and that it needs to prepare to supply power to the toll management module.

[0039] Upon receiving the control signal from the timing module, the second power supply control module triggers its switching function, connecting the second power source to the power supply terminal of the toll management module. The second power source then provides power to the toll management module, enabling it to enter operational mode.

[0040] In this embodiment, the toll management module may include a camera unit, a toll calculation unit, a data statistics unit, and a communication unit. The toll management module may also include a power management unit, which can convert a second power source into a power source suitable for the camera unit, toll calculation unit, data statistics unit, and communication unit. The camera unit begins taking photos or videos of the vehicle to obtain relevant information, such as vehicle type and license plate number. The toll calculation unit calculates the toll based on vehicle type, mileage, and other information. The data statistics unit is responsible for statistically analyzing and recording toll data for passing vehicles. The communication unit is used for data transmission with external systems, such as uploading toll data to the management center or receiving instructions from the management center.

[0041] Once the timing module completes its preset timing task, it can stop outputting control signals to the second power supply control module. Upon losing the control signal, the second power supply control module disconnects the second power source from the power supply terminal of the toll management module. The toll management module then stops operating due to the loss of power, thus ensuring that it only operates when a vehicle arrives, thereby saving energy.

[0042] As can be seen from the above, this embodiment uses a vehicle detection module to accurately detect vehicles at the toll station entrance. Power supply is only triggered when a vehicle is detected, enabling on-demand power supply to the toll management module. This effectively avoids energy waste caused by the module continuously operating when no vehicles are present, significantly improving energy efficiency and saving a substantial amount of electricity. Secondly, the timing module in this embodiment allows the toll management module to operate only during necessary periods when vehicles pass by, further optimizing energy consumption. This ensures that the toll station management system can stably and accurately complete its tasks while maintaining high efficiency and energy conservation.

[0043] like Figure 2 As shown, in one embodiment of this application, the vehicle detection module includes an excitation circuit and a vehicle detection circuit;

[0044] The excitation circuit is used to generate an excitation signal, and the vehicle detection circuit is configured to detect vehicles entering the toll station;

[0045] The excitation circuit is connected to the vehicle detection circuit, and the vehicle detection circuit is connected to the control terminal of the first power supply control module.

[0046] The excitation circuit includes: driver U1, inductor L1, diode D1, capacitor C1, rheostat RP1 and ground inductor L2;

[0047] The first terminal of inductor L1 and the input terminal of driver U1 are both used to connect to an external power supply. The control terminal of driver U1 is connected to the second terminal of inductor L1. The anode of diode D1 is connected to the second terminal of inductor L1. The cathode of diode D1 is connected to the feedback terminal of driver U1 through rheostat RP1. The ground terminal of driver U1 is grounded.

[0048] The cathode of diode D1 is connected to the first terminal of inductor L2, and the second terminal of inductor L2 is grounded.

[0049] The first terminal of capacitor C1 is connected to the cathode of diode D1, and the second terminal of capacitor C1 is grounded.

[0050] In this embodiment, the output terminal of the driver U1 is used to output a pulse signal. The driver U1, inductor L1, diode D1, and capacitor C1 in the excitation circuit together constitute a boost circuit. The first terminal of inductor L1 and the input terminal of driver U1 are connected to an external power supply. When driver U1 is working, its output terminal outputs a pulse signal. Under the action of the pulse signal, inductor L1 stores and releases energy. When the pulse signal of driver U1 causes current to flow through inductor L1, inductor L1 stores energy; when the pulse signal changes and the current decreases, inductor L1 releases energy, charging capacitor C1 through diode D1. Through this process, the voltage of the external power supply is boosted, and finally the boosted voltage is applied to both ends of the inductive coil L2. The purpose of this is to ensure that a uniform and sufficiently strong magnetic field is generated around the inductive coil L2 for accurate vehicle detection.

[0051] The function of the variable resistor RP1 is to collect the voltage across the inductor L2. The collected voltage signal is sent to the feedback terminal of the driver U1. The driver U1 can adjust the duty cycle of its output pulse signal based on the magnitude of the feedback voltage. This change in duty cycle alters the charging and discharging time of capacitor C1. If the voltage across inductor L2 increases, the driver U1 decreases the duty cycle of the output pulse signal, reducing the charging time of capacitor C1 and causing the voltage across inductor L2 to decrease; conversely, if the voltage across inductor L2 decreases, the driver U1 increases the duty cycle of the output pulse signal, increasing the charging time of capacitor C1 and causing the voltage across inductor L2 to increase. This method ensures that the voltage across inductor L2 remains stable.

[0052] The vehicle detection circuit connects the inductive loop coil L2 to the control terminal of the first power supply control module. When a vehicle enters the vicinity of the inductive loop coil L2, the vehicle's metal components alter the magnetic field around the coil, causing changes in the parameters of the coil. Upon detecting these changes, the vehicle detection circuit indicates that a vehicle has entered the toll station and then sends a signal to the control terminal of the first power supply control module.

[0053] As can be seen from the above, the excitation circuit can generate a stable excitation signal, and its boost circuit can increase the external power supply voltage to ensure that a uniform magnetic field is formed around the inductive coil, thereby improving the accuracy of vehicle detection. The rheostat RP1 can collect the voltage of the inductive coil and provide feedback, enabling the driver to adjust the duty cycle of the output pulse and stabilize the voltage across the inductive coil.

[0054] like Figure 2 As shown, in one embodiment of this application, the excitation circuit further includes: transistor Q1, resistor R1, resistor R11, and operational amplifier U2;

[0055] The collector of transistor Q1 is connected to the cathode of diode D1, and the emitter of transistor Q1 is connected to the first end of inductor L2.

[0056] The first end of resistor R1 is connected to the second end of inductor L2, and resistor R1 is grounded.

[0057] The first end of resistor R1 is connected to the inverting input of op-amp U2. The non-inverting input of op-amp U2 is used to connect to the reference voltage V1. The output of op-amp U2 is connected to the inverting input of op-amp U2 through resistor R11. The output of op-amp U2 is connected to the base of transistor Q1.

[0058] In this embodiment, transistor Q1, resistors R1 and R11, and operational amplifier U2 constitute a constant current circuit. Transistor Q1 operates in amplification mode to ensure a stable operating current for the inductor L2, thereby ensuring that the magnetic field strength generated by the inductor L2 remains unchanged. Resistor R1 is connected in series with the inductor L2. Operational amplifier U2 compares the reference voltage V1 at the non-inverting input terminal with the voltage at the inverting input terminal (i.e., the voltage across resistor R1). When there is a deviation between the voltage across resistor R1 and the reference voltage V1, operational amplifier U2 outputs a corresponding voltage signal. For example, if the voltage across resistor R1 is lower than the reference voltage V1, operational amplifier U2 outputs a higher voltage; conversely, if the voltage across resistor R1 is higher than the reference voltage V1, operational amplifier U2 outputs a lower voltage.

[0059] The voltage signal output by operational amplifier U2 controls the base current of transistor Q1. Since transistor Q1 operates in amplification mode, changes in the base current cause a proportional change in the collector current. When it is necessary to increase the current of the inductor L2, operational amplifier U2 outputs a higher voltage, increasing the base current of transistor Q1, which in turn increases the collector current, thus increasing the current through inductor L2. Conversely, when it is necessary to decrease the current of inductor L2, operational amplifier U2 outputs a lower voltage, decreasing the base current of transistor Q1, decreasing the collector current, and consequently decreasing the current through inductor L2.

[0060] In this embodiment, through the comparison feedback of operational amplifier U2 and the current adjustment of transistor Q1, the constant current circuit can dynamically adjust the current according to the operating condition of the inductive coil L2, so that the voltage across resistor R1 is always close to the reference voltage V1. Since the resistance value of resistor R1 is fixed, the current of the inductive coil L2 can remain stable, thereby ensuring the stability of the magnetic field strength generated by the inductive coil L2 and ensuring the accuracy and reliability of vehicle detection.

[0061] like Figure 2 As shown, in one embodiment of this application, the vehicle detection circuit includes: a detection coil L3, a resistor R4, a resistor R5, an operational amplifier U3, and a resistor R6;

[0062] The first end of the detection coil L3 is connected to the inverting input terminal of the operational amplifier U3 through resistor R4, the second end of the detection coil L3 is connected to the non-inverting input terminal of the operational amplifier U3 through resistor R5, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3 through resistor R6, and the output terminal of the operational amplifier U3 is connected to the control terminal of the first power supply control module.

[0063] In this embodiment, when no vehicle passes by, the magnetic field generated by the inductive loop L2 is stable, and the magnetic field around the detection coil L3 remains unchanged. According to the principle of electromagnetic induction, the current in the detection coil L3 also remains stable. At this time, the input signal of the amplifier circuit composed of resistors R4 and R5, operational amplifier U3, and resistor R6 is stable, and the output voltage of operational amplifier U3 does not change, indicating that no vehicle has entered the detection area.

[0064] When a vehicle passes over the inductive loop L2, it interferes with the magnetic field generated by the inductive loop L2, causing a change in the magnetic field around the detection coil L3. According to the law of electromagnetic induction, the current in the detection coil L3 changes accordingly. This changing current signal serves as the input signal for the amplification circuit. It is amplified by the amplification circuit consisting of resistors R4 and R5, operational amplifier U3, and resistor R6, causing a change in the output voltage of operational amplifier U3. This change in voltage is then output to the control terminal of the first power supply control module, thereby informing the system that a vehicle has entered the toll station.

[0065] As can be seen from the above, this embodiment utilizes the detection coil L3 to sense changes in the surrounding magnetic field. When no vehicle is passing by, the magnetic field is stable, and the current and operational amplifier output voltage remain unchanged, ensuring the system is in a stable standby state and reducing false triggering. When a vehicle passes by, the change in the magnetic field can be captured in time, and the amplified output voltage change signal is sent to the first power supply control module. This can accurately trigger subsequent power supply and toll management processes, improving the accuracy and reliability of vehicle detection at the toll station and ensuring the efficient and stable operation of the system.

[0066] like Figure 2 As shown, in one embodiment of this application, the first power supply control module includes: operational amplifier U4 and transistor Q2;

[0067] The non-inverting input of operational amplifier U4 is connected to the output of the vehicle detection module. The output of operational amplifier U4 is used to connect to the reference voltage V2. The output of operational amplifier U4 is connected to the base of transistor Q2. The collector of transistor Q2 is connected to the power supply VCC. Power supply VCC serves as the first power supply.

[0068] The emitter of transistor Q2 is connected to the power supply terminal of the timing module.

[0069] In this embodiment, operational amplifier U4 forms a comparator. Its non-inverting input is connected to the output of the vehicle detection module, and its output is connected to a reference voltage V2. When the vehicle detection module detects a vehicle entering the toll station, the voltage output by the vehicle detection module is greater than the reference voltage V2, and the output of operational amplifier U4 outputs a high-level signal. Conversely, the output of operational amplifier U4 outputs a low-level signal.

[0070] Transistor Q2 operates in switching mode. When operational amplifier U4 outputs a high-level signal, transistor Q2 conducts. At this time, a path is formed between the power supply VCC and the power supply terminal of the timing module, and the power supply VCC supplies power to the timing module, which then begins to operate.

[0071] When operational amplifier U4 outputs a low-level signal, transistor Q2 is cut off. This disconnects the power supply VCC from the timing module's power supply terminal, causing the timing module to stop receiving power and cease operation.

[0072] In this embodiment, the first power supply control module compares the output signal of the vehicle detection module with the reference voltage through operational amplifier U4, controls the conduction and cutoff of transistor Q2, and thus controls the power supply to the timing module to ensure that the timing module only starts working when a vehicle enters the toll station.

[0073] like Figure 2 As shown, in one embodiment of this application, the timing module includes a counter U5, a capacitor C6, and a resistor R9;

[0074] The power supply terminal of counter U5 is connected to the second terminal of the first power supply control module. The power supply terminal of counter U5 is connected to the first terminal of capacitor C6. The second terminal of capacitor C6 is grounded through resistor R9. The second terminal of capacitor C6 is connected to the reset terminal of counter U5. The output terminal of counter U5 is connected to the control terminal of the second power supply control module.

[0075] In this embodiment, capacitor C6 and resistor R9 constitute a reset circuit. Initially, when the power is first turned on, capacitor C6 is effectively short-circuited, and its second terminal is at a low level. This resets counter U5, ensuring it starts counting from its initial value. As the power supply continues to charge capacitor C6, the voltage across it gradually increases. After a period of time, the voltage at the second terminal of capacitor C6 rises to a level that causes the reset terminal of counter U5 to no longer be at a valid reset level, and counter U5 begins counting normally. At this point, counter U5 outputs a high-level signal to the control terminal of the second power supply control module.

[0076] like Figure 2 As shown, in one embodiment of this application, the second power supply control module includes: a switching transistor Q3;

[0077] The control terminal of the switching transistor Q3 is connected to the output terminal of the timing module. The first terminal of the switching transistor Q3 is connected to the power supply VEE, which serves as the second power supply. The second terminal of the switching transistor Q3 is connected to the power supply terminal of the toll management module.

[0078] In this embodiment, when counter U5 is working, counter U5 outputs a high level. Since the control terminal of switch Q3 is connected to the output terminal of counter U5, the high-level signal acts on the control terminal of switch Q3. The characteristics of switch Q3 determine that it will conduct when it receives a high-level signal at its control terminal.

[0079] The first terminal of the switching transistor Q3 is connected to the power supply VEE (i.e., the second power supply), and the second terminal is connected to the power supply terminal of the toll management module. When the switching transistor Q3 is turned on, a path is formed between the power supply VEE and the power supply terminal of the toll management module. The second power supply VEE can provide power to the toll management module, enabling the toll management module to enter the working state and begin to perform tasks such as power management, camera operation, toll calculation, data statistics, and communication.

[0080] When the timing module finishes timing, the signal output by counter U5 goes low, and switch Q3 is turned off. At this time, the connection between power supply VEE and the power supply terminal of the toll management module is cut off, the toll management module stops receiving power and stops working, thus achieving on-demand power supply to the toll management module and saving energy.

[0081] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A toll station management system, characterized in that, include: The system includes a vehicle detection module, a first power supply control module, a first power supply, a timing module, a second power supply, a second power supply control module, and a toll management module. The vehicle detection module is installed at the vehicle entrance of the toll station and is configured to detect vehicles entering the toll station. The control terminal of the first power supply control module is connected to the vehicle detection module, the first terminal of the first power supply control module is connected to the first power source, the second terminal of the first power supply control module is connected to the power supply terminal of the timing module, the output terminal of the timing module is connected to the control terminal of the second power supply control module, the first terminal of the second power supply control module is connected to the second power source, and the second terminal of the second power supply control module is connected to the power supply terminal of the toll management module. The vehicle detection module includes an excitation circuit and a vehicle detection circuit; The excitation circuit is used to generate an excitation signal, and the vehicle detection circuit is configured to detect vehicles entering the toll station; The excitation circuit is connected to the vehicle detection circuit, and the vehicle detection circuit is connected to the control terminal of the first power supply control module. The excitation circuit includes: driver U1, inductor L1, diode D1, capacitor C1, rheostat RP1 and ground inductor L2; The first end of the inductor L1 and the input end of the driver U1 are both used to connect to an external power supply. The control end of the driver U1 is connected to the second end of the inductor L1. The anode of the diode D1 is connected to the second end of the inductor L1. The cathode of the diode D1 is connected to the feedback end of the driver U1 through the rheostat RP1. The ground end of the driver U1 is grounded. The cathode of the diode D1 is connected to the first end of the inductive coil L2, and the second end of the inductive coil L2 is grounded. The first terminal of capacitor C1 is connected to the cathode of diode D1, and the second terminal of capacitor C1 is grounded.

2. The toll station management system as described in claim 1, characterized in that, The excitation circuit also includes: transistor Q1, resistor R1, resistor R11, and operational amplifier U2; The collector of transistor Q1 is connected to the cathode of diode D1, and the emitter of transistor Q1 is connected to the first end of inductive coil L2. The first end of the resistor R1 is connected to the second end of the inductive coil L2, and the resistor R1 is grounded; The first end of the resistor R1 is connected to the inverting input of the operational amplifier U2. The non-inverting input of the operational amplifier U2 is used to connect to the reference voltage V1. The output of the operational amplifier U2 is connected to the inverting input of the operational amplifier U2 through the resistor R11. The output of the operational amplifier U2 is connected to the base of the transistor Q1.

3. The toll station management system as described in claim 1, characterized in that, The vehicle detection circuit includes: detection coil L3, resistor R4, resistor R5, operational amplifier U3, and resistor R6; The first end of the detection coil L3 is connected to the inverting input terminal of the operational amplifier U3 through the resistor R4, the second end of the detection coil L3 is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R5, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3 through the resistor R6, and the output terminal of the operational amplifier U3 is connected to the control terminal of the first power supply control module.

4. A toll station management system as described in claim 1, characterized in that, The first power supply control module includes: operational amplifier U4 and transistor Q2; The non-inverting input of the operational amplifier U4 is connected to the output of the vehicle detection module. The output of the operational amplifier U4 is connected to the reference voltage V2. The output of the operational amplifier U4 is connected to the base of the transistor Q2. The collector of the transistor Q2 is connected to the power supply VCC, which serves as the first power supply. The emitter of the transistor Q2 is connected to the power supply terminal of the timing module.

5. A toll station management system as described in claim 1, characterized in that, The timing module includes a counter U5, a capacitor C6, and a resistor R9; The power supply terminal of the counter U5 is connected to the second terminal of the first power supply control module. The power supply terminal of the counter U5 is connected to the first terminal of the capacitor C6. The second terminal of the capacitor C6 is grounded through the resistor R9. The second terminal of the capacitor C6 is connected to the reset terminal of the counter U5. The output terminal of the counter U5 is connected to the control terminal of the second power supply control module.

6. A toll station management system as described in claim 1, characterized in that, The second power supply control module includes: a switching transistor Q3; The control terminal of the switch Q3 is connected to the output terminal of the timing module. The first terminal of the switch Q3 is connected to the power supply VEE, which serves as a second power supply. The second terminal of the switch Q3 is connected to the power supply terminal of the toll management module.

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