阅读说明：本技术 一种汽油发电机上油位监控传感器及控制方法 (Oil level monitoring sensor on gasoline engine generator and control method ) 是由 杨加军 张洪明 彭波 于 2021-07-15 设计创作，主要内容包括：一种汽油发电机上油位监控传感器及控制方法,传感器设置有电容传感器模块,该电容传感器模块的输出端与滤波模块的输入端连接,该滤波模块的输出端与控制器MCU的输入端连接,该控制器MCU的输出端与电磁阀模块的控制端连接。控制方法为步骤一：采集传感器参考极电容值；步骤二：对参考极电容值进行滤波处理,送入控制模块中；步骤三：采集电容模块检测极电容值；步骤四：对检测极电容值进行滤波处理,并将信号送入控制模块中；步骤五：将参考极电容值和检测极电容值进行对比,超过阈值则发出控制指令,控制电磁阀模块,未超过则进入步骤一。(The sensor is provided with a capacitance sensor module, the output end of the capacitance sensor module is connected with the input end of a filtering module, the output end of the filtering module is connected with the input end of a controller MCU, and the output end of the controller MCU is connected with the control end of a solenoid valve module. The control method comprises the following steps: collecting a capacitance value of a reference electrode of the sensor; step two: filtering the reference electrode capacitance value, and sending the filtered reference electrode capacitance value into a control module; step three: the collecting capacitor module detects the electrode capacitance value; step four: filtering the capacitance value of the detection electrode, and sending a signal into a control module; step five: and comparing the reference electrode capacitance value with the detection electrode capacitance value, sending a control instruction when the reference electrode capacitance value exceeds a threshold value, controlling the electromagnetic valve module, and entering the step one when the reference electrode capacitance value does not exceed the threshold value.)

1. The utility model provides a level monitoring sensor on petrol generator which characterized in that: the output end of the capacitance sensor module is connected with the input end of the filtering module, the output end of the filtering module is connected with the input end of the controller MCU, and the output end of the controller MCU is connected with the control end of the electromagnetic valve module.

2. The oil level monitoring sensor on the gasoline engine generator as set forth in claim 1, wherein: the power supply management module is also arranged and supplies power to the capacitance sensor module, the filtering module, the controller MCU and the electromagnetic valve module.

3. The oil level monitoring sensor on the gasoline engine generator as set forth in claim 1, wherein: the controller MCU is provided with a controller U2, the input end of the controller U2 is respectively connected with the output end of the capacitance sensor module, the output end of the controller U2 is connected with the base electrode of a triode Q3 through a resistor R10, the base electrode of the triode Q3 is grounded through a resistor R11, the emitting electrode of the triode Q3 is grounded, the collecting electrode is connected with the anode of a diode D2, the cathode of the diode D2 is connected with a power supply end, and the anode of the diode D2 is a circuit control signal output end.

4. The method for controlling the oil level monitoring sensor on the gasoline generator as claimed in claim 1, 2 or 3, wherein the method comprises the following steps:

the method comprises the following steps: collecting a capacitance value of a reference electrode of the sensor;

step two: filtering the reference electrode capacitance value, and sending the filtered reference electrode capacitance value into a control module;

step three: the collecting capacitor module detects the electrode capacitance value;

step four: filtering the capacitance value of the detection electrode, and sending a signal into a control module;

step five: and comparing the reference electrode capacitance value with the detection electrode capacitance value, sending a control instruction when the reference electrode capacitance value exceeds a threshold value, controlling the electromagnetic valve module, and entering the step one when the reference electrode capacitance value does not exceed the threshold value.

Technical Field

The invention relates to the technical field of gasoline generator equipment, in particular to a gasoline generator oil level monitoring sensor and a control method.

Background

In the prior art, a carburetor of a gasoline generator adopts a float mechanical principle to control oil inlet, when the gasoline level in the carburetor reaches a certain height, a float floats upwards to drive an ejector pin to seal an oil inlet loop, but in actual work, the oil inlet loop is not tightly sealed due to the jamming of a float mechanical structure, the shaking of the generator and the like, and the gasoline overflows from an oil overflow hole on the carburetor to cause other disasters.

Disclosure of Invention

The invention provides a gasoline generator oil level monitoring sensor and a control method thereof, aiming at the defects of the prior art, which adopt non-contact electronic equipment to carry out detection and control, avoid the defects of the original mechanical structure, ensure that gasoline does not overflow from a carburetor and ensure that a generator can work more reliably and stably, and the specific technical scheme is as follows:

the utility model provides a level monitoring sensor on gasoline engine generator, is provided with the capacitance sensor module, and the output of this capacitance sensor module is connected with the input of filter module, and the output of this filter module is connected with controller MCU's input, and this controller MCU's output is connected with the control end of solenoid valve module.

As an optimization: the power supply management module is also arranged and supplies power to the capacitance sensor module, the filtering module, the controller MCU and the electromagnetic valve module.

As an optimization: the controller MCU is provided with a controller U2, the input end of the controller U2 is respectively connected with the output end of the capacitance sensor module, the output end of the controller U2 is connected with the base electrode of a triode Q3 through a resistor R10, the base electrode of the triode Q3 is grounded through a resistor R11, the emitting electrode of the triode Q3 is grounded, the collecting electrode is connected with the anode of a diode D2, the cathode of the diode D2 is connected with a power supply end, and the anode of the diode D2 is a circuit control signal output end.

The control method of the oil level monitoring sensor on the gasoline generator adopts the following concrete steps:

the method comprises the following steps: collecting a capacitance value of a reference electrode of the sensor;

step two: filtering the reference electrode capacitance value, and sending the filtered reference electrode capacitance value into a control module;

step three: the collecting capacitor module detects the electrode capacitance value;

step four: filtering the capacitance value of the detection electrode, and sending a signal into a control module;

step five: and comparing the reference electrode capacitance value with the detection electrode capacitance value, sending a control instruction when the reference electrode capacitance value exceeds a threshold value, controlling the electromagnetic valve module, and entering the step one when the reference electrode capacitance value does not exceed the threshold value.

The invention has the beneficial effects that: 1. the capacitance sensor module is adopted to replace a mechanical detection device in the traditional technology, so that the sensitivity is higher, and the installation is more convenient; 2. the invention relates to a detection device for gasoline oil level, which is characterized in that a principle of a capacitance type sensor is utilized, the detection device is embedded into a carburetor from the side surface of the carburetor to detect the gasoline oil level, in order to avoid the interference of factors such as external temperature, electromagnetic waves and the like, a reference electrode and test electrode bipolar capacitance detection means is adopted, after digital and hardware double filtering is carried out on the bipolar capacitance sensor, reference operation judgment is carried out, finally, the threshold value of a detection electrode is determined, whether the oil level reaches a detection position or not is judged, an external electromagnetic valve is controlled to switch an oil way according to the detection result, safety and reliability are realized, meanwhile, signals can be output to an external controller or a display device according to requirements, and the intelligent degree is higher.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a circuit schematic diagram of the controller MCU of the present invention.

Fig. 3 is a flow chart of the control method of the invention.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

As shown in fig. 1: the utility model provides a level monitoring sensor on gasoline engine generator, is provided with the capacitance sensor module, and the output of this capacitance sensor module is connected with the input of filter module, and the output of this filter module is connected with controller MCU's input, and this controller MCU's output is connected with the control end of solenoid valve module, and controller MCU's signal output part is connected with the display module, still is provided with power management module, and this power management module does capacitance sensor module, filter module, controller MCU and solenoid valve module power supply.

As shown in fig. 2: the controller MCU is provided with a controller U2, the input end of the controller U2 is respectively connected with the output end of the capacitance sensor module, the output end of the controller U2 is connected with the base electrode of a triode Q3 through a resistor R10, the base electrode of the triode Q3 is grounded through a resistor R11, the emitting electrode of the triode Q3 is grounded, the collecting electrode is connected with the anode of a diode D2, the cathode of the diode D2 is connected with a power supply end, and the anode of the diode D2 is a circuit control signal output end. The reference pole of the capacitance sensor is connected with the controller U2 through the SCL end, the detection pole of the capacitance sensor is connected with the controller U2 through the SDA end, after comparison, the capacitance values of the detection pole and the reference pole exceed a set value, then the P01 end sends a control signal, the triode Q3 is conducted, the power supply VIN is conducted, the electromagnetic valve module is controlled to act, and the oil circuit is disconnected.

A control method of a gasoline engine generator oil level monitoring sensor comprises the following steps:

the method comprises the following steps: collecting a capacitance value of a reference electrode of the sensor;

step two: filtering the reference electrode capacitance value, and sending the filtered reference electrode capacitance value into a control module;

step three: the collecting capacitor module detects the electrode capacitance value;

step four: filtering the capacitance value of the detection electrode, and sending a signal into a control module;

step five: and comparing the reference electrode capacitance value with the detection electrode capacitance value, sending a control instruction when the reference electrode capacitance value exceeds a threshold value, controlling the electromagnetic valve module, and entering the step one when the reference electrode capacitance value does not exceed the threshold value.