Start-stop control circuit based on RFID technology

Abstract

The utility model discloses a start-stop control circuit based on the RFID technology, and the circuit consists of a voltage stabilizing circuit, a stepping motor drive circuit, an MOS drive circuit, an LED drive circuit, a generator rotating speed sampling circuit, a generator flameout circuit, a temperature sampling circuit, a key sampling circuit, a fuel sampling circuit, a wireless receiving and signal processing circuit, and an MCU. The MCU is respectively connected with the voltage stabilizing circuit, the stepping motor driving circuit, the MOS driving circuit, the LED driving circuit, the generator rotating speed sampling circuit, the generator flameout circuit, the temperature sampling circuit, the key sampling circuit, the fuel sampling circuit and the wireless receiving and signal processing circuit, and the stepping motor driving circuit is connected with the stepping motor. The voltage stabilizing circuit comprises a 12V voltage stabilizing circuit and a 5V voltage stabilizing circuit. According to the start-stop control circuit based on the RFID technology, the RFID card is used as a generator wake-up key, and the RFID card is used for sending signals to the generator start-stop control unit to control the start-stop of the generator.

Description

Technical Field

[0001] The utility model relates to the technical field of RFID, in particular to a start-stop control circuit based on RFID technology. Background Art

[0002] The generator start-stop control uses an RFID card to wake up and start the generator, making the generator safer, with lower energy consumption and greater convenience.

[0003] The remote control of the traditional generator remote control start and stop control system requires battery power, the battery life is not long, the security is not high, and it may interfere with other wireless devices. Utility Model Content

[0004] The purpose of the utility model is to provide a start-stop control circuit based on RFID technology to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A start-stop control circuit based on RFID technology consists of a voltage stabilizing circuit, a stepper motor driving circuit, a MOS driving circuit, an LED driving circuit, a generator speed sampling circuit, a generator flameout circuit, a temperature sampling circuit, a key sampling circuit, a fuel sampling circuit, a wireless receiving and signal processing circuit and an MCU. The MCU is respectively connected to the voltage stabilizing circuit, the stepper motor driving circuit, the MOS driving circuit, the LED driving circuit, the generator speed sampling circuit, the generator flameout circuit, the temperature sampling circuit, the key sampling circuit, the fuel sampling circuit, the wireless receiving and signal processing circuit, and the stepper motor driving circuit is connected to the stepper motor.

[0007] As a further technical solution of the utility model: the wireless receiving and signal processing circuit includes an antenna and a signal processing circuit, and the signal processing circuit is connected to the antenna.

[0008] As a further technical solution of the utility model: the voltage stabilizing circuit includes a 12V voltage stabilizing circuit and a 5V voltage stabilizing circuit.

[0009] As a further technical solution of the utility model: the LED driving circuit controls the state of the LED lamp through a triode switch.

[0010] As a further technical solution of the utility model: a plurality of MOS tube switch elements are connected to the MOS drive circuit.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model adopts an RFID technology-based start-stop control circuit to use an RFID card as a generator wake-up key, and uses the RFID card to send a signal to a generator start-stop control unit to control the start-stop of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a functional block diagram of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model.

[0015] Figure 3 This is a logic block diagram of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Reference Figure 1-3 , a start-stop control circuit based on RFID technology, composed of a voltage stabilizing circuit, a stepper motor driving circuit, a MOS driving circuit, an LED driving circuit, a generator speed sampling circuit, a generator flameout circuit, a temperature sampling circuit, a key sampling circuit, a fuel sampling circuit, a wireless receiving and signal processing circuit and an MCU, wherein the MCU is respectively connected to the voltage stabilizing circuit, the stepper motor driving circuit, the MOS driving circuit, the LED driving circuit, the generator speed sampling circuit, the generator flameout circuit, the temperature sampling circuit, the key sampling circuit, the fuel sampling circuit, the wireless receiving and signal processing circuit, and the stepper motor driving circuit is connected to the stepper motor. The voltage stabilizing circuit includes a 12V voltage stabilizing circuit and a 5V voltage stabilizing circuit.

[0018] in:

[0019] The 12V voltage regulator circuit adopts a non-isolated MOS step-down structure to obtain a 12V stable DC to power the stepper motor drive and 5V voltage regulator circuit;

[0020] The 5V voltage regulator circuit uses a non-isolated linear voltage regulator circuit to reduce the 12V voltage to 5V to power the main control MCU and user interface control circuit;

[0021] The stepper motor drive circuit controls the rotation direction of the stepper motor to achieve the opening angle and closing of the generator damper;

[0022] MOS drive circuit drives P MOS to output input voltage to control the start relay and oil valve to open and close;

[0023] LED driving circuit, driving the generator working status indicator light (working indicator light, fault indicator light) to turn on and off;

[0024] Generator speed sampling circuit, collecting generator speed to determine the generator working status;

[0025] A generator flameout circuit turns off the generator upon receiving a flameout signal;

[0026] The temperature sampling circuit collects the generator cylinder temperature to determine the damper opening mode during startup;

[0027] The key sampling circuit detects the one-key start switch signal to control the start and stop of the generator;

[0028] The fuel sampling circuit detects whether the generator uses fuel oil or gas, and determines the starting mode (fuel start, gas start) when the generator starts;

[0029] The wireless receiving and signal processing circuit identifies the RFIF card tag and sends the RFIF card tag information to the MCU;

[0030] The MCU identifies RFID tag information, receives key signals, speed signals, and temperature signals, thereby controlling the stepper motor drive circuit, MOS drive circuit, flameout circuit, and LED drive circuit.

[0031] Here’s how it works:

[0032] 1.RFID tag matching:

[0033] 1. When the generator is stopped, press and hold the one-button start button for more than 5 seconds, the red indicator light will work, and the module will enter the RFID card matching mode;

[0034] 2. Place the RFID card in the sensing area. When the module recognizes the RFID card, the red light flashes, and the RFID card tag is read;

[0035] 3. Repeat step 2, one module can match multiple RFID cards;

[0036] 4. Press and hold the one-button start button for more than 5 seconds again, the red indicator light goes out, and the RFID card tag information is matched successfully;

[0037] 2.Damper status:

[0038] 1. Temperature is less than 5℃: Start with the damper closed 1 / 2 / 3 times, open the damper after successful start, keep it open for 10 seconds and then slowly open the damper; start with the damper open 4 / 5 / 6 times;

[0039] 2. When the temperature is less than 40℃: Start with the damper closed 1 / 2 / 3 times, and slowly open the damper after successful start; start with the damper open 4 / 5 / 6 times;

[0040] 3. Temperature greater than 40°C: 1 / 3 / 5 times close the damper for 1 second and then slowly open it; 2 / 4 / 6 times fully open the damper to start.

[0041] 3. Startup:

[0042] 1. When the module is in standby mode, after reading the matched RFID card tag for more than 0.5 seconds or the one-key start button is pressed for more than 1 second;

[0043] 2. Start the generator, the green indicator light flashes, and the damper is controlled to open and close during the starting process;

[0044] 3. If the startup fails, the system will continue to perform the 2nd operation to start the system, with a maximum of 6 startups;

[0045] 4. After successful startup, the green indicator light is always on;

[0046] 5. If the startup fails for 6 times, the red indicator light will flash for 1 minute.

[0047] 4. Turn off the flame:

[0048] When the module is in working state, after reading the matched RFID card tag for more than 1 second or the one-touch start button is pressed for more than 1 second, the green indicator light flashes, the flameout line is connected to the ground, the fuel solenoid valve is connected, and the fuel solenoid valve and the flameout line are disconnected after 5 seconds. After the flameout is successfully turned off, the module enters the standby mode.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0050] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. A start-stop control circuit based on RFID technology, consisting of a voltage stabilizing circuit, a stepper motor drive circuit, a MOS drive circuit, an LED drive circuit, a generator speed sampling circuit, a generator flameout circuit, a temperature sampling circuit, a key sampling circuit, a fuel sampling circuit, a wireless receiving and signal processing circuit and an MCU, characterized in that: The MCU is respectively connected to a voltage stabilizing circuit, a stepper motor driving circuit, a MOS driving circuit, an LED driving circuit, a generator speed sampling circuit, a generator flameout circuit, a temperature sampling circuit, a key sampling circuit, a fuel sampling circuit, and a wireless receiving and signal processing circuit, and the stepper motor driving circuit is connected to the stepper motor.

2. The start-stop control circuit based on RFID technology according to claim 1, characterized in that: The wireless receiving and signal processing circuit comprises an antenna and a signal processing circuit, and the signal processing circuit is connected to the antenna.

3. The start-stop control circuit based on RFID technology according to claim 2, characterized in that: The voltage stabilizing circuit includes a 12V voltage stabilizing circuit and a 5V voltage stabilizing circuit.

4. The start-stop control circuit based on RFID technology according to claim 2, characterized in that: The LED driving circuit controls the state of the LED lamp through a triode switch.

5. The start-stop control circuit based on RFID technology according to claim 2, characterized in that: The MOS drive circuit is connected to a plurality of MOS tube switch elements.

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