A method for monitoring water in oil

Abstract

This invention relates to the field of engineering machinery technology, specifically to a method for detecting water in oil. The method includes the following steps: S1, receiving a signal from a water sensor and determining the difference between the resistance values ​​of the current frame and the previous frame; S2, if the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to a first preset value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than a second preset value, then water is considered to be present in the oil, and an alarm is triggered; if the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the second preset value, then the vehicle is considered to be in a bumpy state. If the resistance value is less than the first preset value in at least one frame, water is considered to be absent in the oil; if the resistance value is greater than or equal to the first preset value and less than the second preset value in multiple consecutive frames, water is considered to be present in the oil, and an alarm is triggered. In use, the current water level is determined based on the resistance values ​​monitored by the water sensor in the current frame and the previous frame, reducing the risk of false alarms.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a method for monitoring water in oil. Background Technology

[0002] Excavators have a fuel filtration system that filters out water from the fuel to prevent it from entering the engine and damaging the cylinders. When the water content in the filtration system reaches a set level, a water-in-fuel alarm is triggered, reminding the operator to drain the water. However, excavators operate under harsh conditions, often experiencing bumpy rides, which can cause water to splash onto the sensor probe, leading to a false water-in-fuel alarm. Summary of the Invention

[0003] The purpose of this invention is to provide a method for monitoring water in oil to address the above problems, determine the current state of the water cup, and reduce the risk of false alarms.

[0004] To achieve the above objectives, this invention discloses a method for monitoring water in oil, which includes the following steps:

[0005] S1. Receive the signal from the water sensor and determine the difference between the resistance values ​​of the current frame and the previous frame;

[0006] S2. If the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, then it is considered that there is water in the oil and an alarm is triggered.

[0007] If the difference between the resistance value of at least one current frame and the resistance value of the previous frame is greater than or equal to the second set value, the vehicle is considered to be in a bumpy state. If the resistance value is less than the first set value for at least one frame, it is considered that there is no water in the oil. If the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, it is considered that there is water in the oil and an alarm is triggered.

[0008] When in use, the current state of the water cup is determined based on the resistance values ​​monitored by the water sensor in the current frame and the previous frame, reducing the risk of false alarms.

[0009] Preferably, in step S1, the signal from the water sensor is received via the CAN bus.

[0010] Signal transmission is convenient during use.

[0011] Preferably, in step S2, a signal is sent via the CAN bus to trigger an alarm via a buzzer or indicator light.

[0012] Signal transmission is convenient during use.

[0013] Preferably, in step S2, if the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to a first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than a second set value, the signal is output according to the real-time resistance value.

[0014] When the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, the vehicle is considered not to be in a bumpy state, and the water sensor outputs a signal normally.

[0015] Preferably, when the vehicle is in a bumpy state and the resistance value is less than the first set value for at least one frame, the signal is continuously output according to the resistance value of that frame.

[0016] When in use, the water sensor continuously outputs a stable signal to avoid frequent signal fluctuations that could cause the alarm to sound intermittently.

[0017] Preferably, when the vehicle is in a bumpy state and the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, the signal is continuously output according to the preset value.

[0018] When in use, the water sensor continuously outputs a stable signal to avoid frequent signal fluctuations that could cause the alarm to sound intermittently.

[0019] Preferably, the preset value is 4.8V.

[0020] This voltage is the output voltage converted from the preset fixed resistor of the water sensor, which facilitates the alarm of the buzzer or indicator light.

[0021] In summary, the beneficial effects of this invention are as follows: when in use, the current state of the water cup is determined based on the resistance values ​​monitored by the water sensor in the current frame and the previous frame, thereby reducing the risk of false alarms. Attached Figure Description

[0022] Figure 1 This is a schematic flowchart of a method for monitoring water in oil according to the present invention;

[0023] Figure 2 This is a schematic diagram of the equipment used in the oil-water monitoring method of the present invention. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] like Figure 1 , 2 As shown, a method for monitoring water in oil includes the following steps:

[0026] S1. Receive the signal from the water sensor and determine the difference between the resistance values ​​of the current frame and the previous frame;

[0027] S2. If the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, then it is considered that there is water in the oil and an alarm is triggered.

[0028] Preferably, the signal from the water sensor is received via a CAN bus.

[0029] Signal transmission is convenient during use.

[0030] If the difference between the resistance value of at least one current frame and the resistance value of the previous frame is greater than or equal to the second set value, the vehicle is considered to be in a bumpy state. If the resistance value is less than the first set value for at least one frame, it is considered that there is no water in the oil. If the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, it is considered that there is water in the oil and an alarm is triggered.

[0031] Preferably, a signal is sent via the CAN bus to trigger an alarm via a buzzer or indicator light.

[0032] Signal transmission is convenient during use.

[0033] When in use, the current state of the water cup is determined based on the resistance values ​​monitored by the water sensor in the current frame and the previous frame, reducing the risk of false alarms.

[0034] Preferably, in step S2, if the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to a first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than a second set value, the signal is output according to the real-time resistance value.

[0035] When the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, the vehicle is considered not to be in a bumpy state, and the water sensor outputs a signal normally.

[0036] Preferably, when the vehicle is in a bumpy state and the resistance value is less than the first set value for at least one frame, the signal is continuously output according to the resistance value of that frame.

[0037] When in use, the water sensor continuously outputs a stable signal to avoid frequent signal fluctuations that could cause the alarm to sound intermittently.

[0038] When the vehicle is in a bumpy state and the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, the alarm signal will continue according to the preset value.

[0039] When in use, the water sensor continuously outputs a stable signal to avoid frequent signal fluctuations that could cause the alarm to sound intermittently.

[0040] The default value is 4.8V.

[0041] This voltage is the output voltage converted from the preset fixed resistor of the water sensor, which facilitates the alarm of the buzzer or indicator light.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for monitoring water in oil, characterized in that, Includes the following steps: S1. Receive the signal from the water sensor and determine the difference between the resistance values ​​of the current frame and the previous frame; S2. If the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, then it is considered that there is water in the oil and an alarm is triggered. If the difference between the resistance value of at least one current frame and the resistance value of the previous frame is greater than or equal to the second set value, the vehicle is considered to be in a bumpy state. If the resistance value is less than the first set value for at least one frame, it is considered that there is no water in the oil. If the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, it is considered that there is water in the oil and an alarm is triggered.

2. The method for monitoring water in oil as described in claim 1, characterized in that, In step S1, the signal from the water sensor is received via the CAN bus.

3. The method for monitoring water in oil as described in claim 2, characterized in that, In step S2, a signal is sent via the CAN bus to trigger an alarm via a buzzer or indicator light.

4. The method for monitoring water in oil as described in any one of claims 1 to 3, characterized in that, In step S2, if the difference between the resistance values ​​of at least one current frame and the previous frame is greater than or equal to the first set value, and the difference between the resistance values ​​of multiple consecutive current frames and the previous frame is less than the second set value, an alarm signal is output according to the real-time resistance value.

5. The method for monitoring water in oil as described in any one of claims 1 to 3, characterized in that, When the vehicle is in a bumpy state, and the resistance value is less than the first set value for at least one frame, an alarm signal will be continuously output according to the resistance value of that frame.

6. The method for monitoring water in oil as described in any one of claims 1 to 3, characterized in that, When the vehicle is in a bumpy state and the resistance value is greater than or equal to the first set value and less than the second set value for multiple consecutive frames, an alarm signal will be continuously output according to the preset value.

7. The method for monitoring water in oil as described in claim 6, characterized in that, The default value is 4.8V.

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