Anti-theft alarm for oil leakage of oil delivery pipe of automobile

Abstract

The utility model discloses an anti-theft alarm for oil leakage of an oil delivery pipe of an automobile. The anti-theft alarm comprises a main controller, and a flow sampling module, an internal battery power supply management module, a power supply module and a sound-light alarm module which are electrically connected with the main controller, the power supply module further comprises a voltage conversion internal power supply unit and a voltage detection unit; the internal battery power management module further comprises an internal battery and a dual-power management unit; the flow sampling module adopts a flow meter to convert flowing of oil in an automobile oil conveying pipe into pulse signals and send the pulse signals to the main controller. The voltage detection unit is used for detecting the working voltage of the automobile; the sound-light alarm module uses a buzzer and an LED lamp to send an alarm event signal; when the automobile is in a starting state, the power supply unit is used for supplying power; when the automobile is not started, the internal battery is used for supplying power; the main controller is used for determining whether to trigger the alarm signal of the sound-light alarm module according to the working state of the automobile and the oil use state, collected by the flow sampling module, of the oil conveying pipe of the automobile.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, specifically relating to an anti-theft alarm for oil leaks in automotive fuel lines. Background Technology

[0002] Trucks and heavy engineering vehicles operating in the field may suffer fuel losses due to complex environments, malfunctions in their fuel supply systems, or fuel theft. Furthermore, on some outdated heavy machinery, repeated repairs have reduced the reliability of fuel pipelines, making it difficult to detect leaks or thefts in a timely manner. Utility Model Content

[0003] In view of the above-mentioned problems, this utility model provides an anti-theft alarm for oil leaks in automobile fuel lines.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An anti-theft alarm for a car fuel line leak includes a main controller and a flow sampling module, an internal battery power management module, a power module, and an audible and visual alarm module electrically connected to the main controller; the power module further includes a voltage conversion internal power supply unit and a voltage detection unit; the internal battery power management module further includes an internal battery and a dual power management unit.

[0006] The flow sampling module uses a flow meter to convert the flow of oil in the vehicle's fuel line into a pulse signal and send it to the main controller; the voltage detection unit is used to detect the vehicle's operating voltage; the audible and visual alarm module uses a buzzer and LED lights to emit alarm event signals; when the vehicle is running, it is powered by the power supply unit; when the vehicle is not running, it is powered by the internal battery; the main controller is used to determine whether to trigger the alarm signal of the audible and visual alarm module based on the vehicle's operating status and the oil usage status in the vehicle's fuel line collected by the flow sampling module.

[0007] In one possible implementation, the main controller uses an N32WB031KEQ6-2 chip.

[0008] In one possible implementation, the internal power supply unit for voltage conversion specifically includes: a terminal J1 connected to the automotive battery system, receiving a DC voltage of 0-80V; an output terminal of the first terminal J1 connected to one end of a fuse F1; the other end of the fuse F1 connected to one end of a bidirectional diode D2, one end of a third resistor R3, and the anode of the first diode D1; the cathode of the first diode D2 connected to one end of a first capacitor C1 and the input terminal of a voltage regulator chip U1; the other end of the first capacitor C1 grounded; the output terminal of the voltage regulator chip U1 connected to one end of a second capacitor C2 and a third capacitor C3, and the drain of a first switching transistor Q1; the gate of the first switching transistor Q1 connected to one end of a first resistor R1; the drain of the first switching transistor Q1 connected to the source of a second switching transistor Q2 and one end of a fifth resistor R5; the gate of the second switching transistor Q2 connected to one end of a second resistor R2; the drain of the second switching transistor Q2 connected to the second terminal J2; the other end of the third resistor R3 connected to one end of a fourth resistor R4; and the other end of the fourth resistor R4 connected to a seventh... One end of resistor R7, the anode of the third diode D3, one end of the fifth capacitor C5, and the first non-inverting input of the dual operational amplifier LM358 are connected. The first inverting input of the dual operational amplifier LM358 is connected to the first output of the dual operational amplifier LM358. The positive power supply terminal of the dual operational amplifier LM358 is connected to a 3.3V power supply and also to one end of the fourth capacitor C4. The other end of the fifth resistor R5 is connected to one end of the eighth resistor R8, the anode of the fourth diode D4, one end of the sixth diode C6, and the second non-inverting input of the dual operational amplifier LM358. The second inverting input of the dual operational amplifier LM358 is connected to the second output of the dual operational amplifier LM358. The other ends of the bidirectional diode D2, the first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the seventh resistor R7, the third diode D3, the fifth capacitor C5, the eighth resistor R8, the fourth diode D4, and the sixth diode C6 are grounded.

[0009] In one possible implementation, the LED light includes a multi-color LED indicator: red indicates an alarm event; green indicates that the battery and device are functioning normally; blue indicates one-third of the normal battery life; and white indicates that the device has run out of safe usage cycles and cannot function properly.

[0010] The present invention has the following advantages: it can be used to inspect the safe operation of oil pipelines for vehicles or heavy engineering vehicles working in the field, prevent oil pipeline detachment, and prevent oil theft. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a car fuel line leak anti-theft alarm according to an embodiment of the present invention;

[0012] Figure 2 This is an electronic circuit diagram of the internal power supply unit of the medium-voltage conversion of an anti-theft alarm for oil leaks in automotive fuel lines, according to an embodiment of this utility model. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] Reference Figure 1 The diagram shown is a schematic block diagram of an anti-theft alarm for an automotive fuel line leak according to an embodiment of the present invention. It includes a main controller and, electrically connected to the main controller, a flow sampling module, an internal battery power management module, a power supply module, and an audible and visual alarm module. The power supply module further includes a voltage conversion internal power supply unit and a voltage detection unit. The internal battery power management module further includes an internal battery and a dual power management unit. The flow sampling module uses a flow meter to convert the flow of oil in the automotive fuel line into pulse signals, which are then sent to the main controller. The voltage detection unit is used to detect the operating voltage of the automotive vehicle. The audible and visual alarm module uses a buzzer and LED lights to emit alarm event signals. When the automotive vehicle is running, the power supply unit provides power; when the vehicle is not running, the internal battery provides power. The main controller determines whether to trigger the alarm signal of the audible and visual alarm module based on the operating status of the automotive vehicle and the oil usage status of the fuel line collected by the flow sampling module.

[0015] In a specific application example, the main controller uses the N32WB031KEQ6-2 chip.

[0016] See further Figure 2The internal power supply unit for voltage conversion specifically includes: terminal J1 connected to the car battery system, inputting DC voltage 0-80V; one output terminal of the first terminal J1 connected to one end of fuse F1; the other end of fuse F1 connected to one end of bidirectional diode D2, one end of third resistor R3, and the positive terminal of first diode D1; the negative terminal of first diode D2 connected to one end of first capacitor C1 and the input terminal of voltage regulator chip U1; the other end of first capacitor C1 grounded; the output terminal of voltage regulator chip U1 connected to one end of second capacitor C2 and third capacitor C3, and the drain of first switching transistor Q1; the gate of first switching transistor Q1 connected to one end of first resistor R1; the drain of first switching transistor Q1 connected to the source of second switching transistor Q2 and one end of fifth resistor R5; the gate of second switching transistor Q2 connected to one end of second resistor R2; the drain of second switching transistor Q2 connected to second terminal J2; the other end of third resistor R3 connected to one end of fourth resistor R4; the other end of fourth resistor R4 connected to one end of seventh resistor R7. The first non-inverting input of the LM358 is connected to the positive terminal of the third diode D3, one end of the fifth capacitor C5, and the first output terminal of the LM358. The positive power supply terminal of the LM358 is connected to a 3.3V power supply and also to one end of the fourth capacitor C4. The other end of the fifth resistor R5 is connected to one end of the eighth resistor R8, the positive terminal of the fourth diode D4, one end of the sixth diode C6, and the second non-inverting input of the LM358. The second inverting input of the LM358 is connected to the second output terminal of the LM358. The other ends of the bidirectional diode D2, the first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the seventh resistor R7, the third diode D3, the fifth capacitor C5, the eighth resistor R8, the fourth diode D4, and the sixth diode C6 are grounded. The protection voltage of diode D2 can be selected according to different power supply systems; in this specific application example, 12V or 24V input is used. Diode D1 is used to isolate power supply interference to the detection circuit. U1 stabilizes the input voltage at 3.3V to provide power to the subsequent circuits. Q1 and Q2 each form a zero-dropout unidirectional isolation circuit. The function of Q2 is to prevent the battery from being overcharged by high power supply voltage. The function of Q1 is to prevent battery energy from flowing out when the input voltage is too low or 0. The first voltage detection circuit composed of dual operational amplifiers LM358 proportionally reduces the high voltage signal of 0-60V input to a 0-3V circuit usable by the microcontroller. The second voltage detection circuit composed of dual operational amplifiers LM358 is used to detect the voltage of the internal power supply.

[0017] In a specific application example, the LED light includes a multi-color LED indicator: red indicates an alarm event; green indicates that the battery and device are in normal working condition; blue indicates that the battery life is one-third of its normal value; and white indicates that the device has run out of safe usage cycles and cannot work properly.

[0018] The above-described fuel line leak alarm system detects fuel leaks when the car is not running. If the flow meter outputs a pulse, it indicates a leak (or theft). When the car is running, if the flow meter's pulse count is greater than or less than the set threshold, it also indicates a leak (or theft).

[0019] When the car is not running, the device's input voltage is the vehicle battery voltage. There is no oil flow in the oil circuit, the main controller does not receive a pulse signal, and therefore does not trigger an alarm event. The device is powered by the vehicle battery. If an oil leak (oil theft) occurs at this time, the main controller will activate the alarm event.

[0020] When the car is started and operating, the device's input voltage is the vehicle battery charging voltage, oil flows in the oil circuit, the main controller receives a pulse signal, and if the pulse signal is within the set threshold range, the main controller does not trigger an alarm event, and the device is powered by the vehicle battery. If the pulse signal is greater than or less than the set threshold range, it indicates an oil leak (oil theft) event, and the main controller will activate an alarm event.

[0021] When the device's supply voltage is lower than the battery's minimum discharge voltage, or is 0V, the CPU initiates an alarm event. The device's operating power is supplied by its internal battery.

[0022] Through the above work process, we can test the safe operation of oil pipelines for vehicles or heavy engineering vehicles working in the field, prevent oil pipeline detachment, and prevent oil theft.

[0023] It should be understood that the exemplary embodiments described herein are illustrative and not restrictive. Although one or more embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A car fuel line leak alarm, characterized in that, It includes a main controller and a flow sampling module, an internal battery power management module, a power module, and an audible and visual alarm module electrically connected to the main controller; the power module further includes a voltage conversion internal power supply unit and a voltage detection unit; the internal battery power management module further includes an internal battery and a dual power management unit; The flow sampling module uses a flow meter to convert the flow of oil in the vehicle's fuel line into a pulse signal and send it to the main controller; the voltage detection unit is used to detect the vehicle's operating voltage; the audible and visual alarm module uses a buzzer and LED lights to emit alarm event signals; when the vehicle is running, it is powered by the power supply unit; when the vehicle is not running, it is powered by the internal battery; the main controller is used to determine whether to trigger the alarm signal of the audible and visual alarm module based on the vehicle's operating status and the oil usage status in the vehicle's fuel line collected by the flow sampling module.

2. The automotive fuel line leak alarm as described in claim 1, characterized in that, The main controller uses the N32WB031KEQ6-2 chip.

3. The automotive fuel line leak anti-theft alarm as described in claim 1, characterized in that, The internal power supply unit for voltage conversion specifically includes: terminal J1 connected to the car battery system, inputting DC voltage 0-80V; one output terminal of the first terminal J1 connected to one end of fuse F1; the other end of fuse F1 connected to one end of bidirectional diode D2, one end of third resistor R3, and the positive terminal of first diode D1; the negative terminal of first diode D2 connected to one end of first capacitor C1 and the input terminal of voltage regulator chip U1; the other end of first capacitor C1 grounded; the output terminal of voltage regulator chip U1 connected to one end of second capacitor C2 and third capacitor C3, and the drain of first switching transistor Q1; the gate of first switching transistor Q1 connected to one end of first resistor R1; the drain of first switching transistor Q1 connected to the source of second switching transistor Q2 and one end of fifth resistor R5; the gate of second switching transistor Q2 connected to one end of second resistor R2; the drain of second switching transistor Q2 connected to second terminal J2; the other end of third resistor R3 connected to one end of fourth resistor R4; the other end of fourth resistor R4 connected to seventh resistor R7. One end of the resistor R5 is connected to the positive terminal of the third diode D3, one end of the fifth capacitor C5, and the first non-inverting input terminal of the dual operational amplifier LM358. The first inverting input terminal of the dual operational amplifier LM358 is connected to the first output terminal of the dual operational amplifier LM358. The positive power supply terminal of the dual operational amplifier LM358 is connected to a 3.3V power supply and also to one end of the fourth capacitor C4. The other end of the fifth resistor R5 is connected to one end of the eighth resistor R8, the positive terminal of the fourth diode D4, one end of the sixth diode C6, and the second non-inverting input terminal of the dual operational amplifier LM358. The second inverting input terminal of the dual operational amplifier LM358 is connected to the second output terminal of the dual operational amplifier LM358. The other ends of the bidirectional diode D2, the first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the seventh resistor R7, the third diode D3, the fifth capacitor C5, the eighth resistor R8, the fourth diode D4, and the sixth diode C6 are grounded.

4. The automotive fuel line leak anti-theft alarm as described in claim 1, characterized in that, The LED lights include multi-color LED indicator lights: red indicates an alarm event; green indicates that the battery and device are working normally; blue indicates that the battery has one-third of its normal lifespan; and white indicates that the device has run out of safe usage cycles and cannot work properly.

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