Flow safety monitoring and prevention control method

Abstract

The application discloses a flow safety monitoring and prevention control method, comprising the following steps: defining the installation mode of a flowmeter; setting the installation mode of the flowmeter in an electronic monitor, and defining the corresponding button; detecting the installation mode of the flowmeter by using an image recognition algorithm, and inputting a signal into a controller; selecting the corresponding button when the flowmeter is extended or retracted in the forward direction, and sending a corresponding installation signal to the controller by the electronic monitor; comparing the signal sent by the electronic monitor with the detected image recognition signal by the controller, and performing corresponding control; setting a machine opening and closing flow automatic detection start button in the electronic monitor, sliding the handle sliding key at this time, and the controller does not respond; and entering an automatic flow calibration process at this time. The method can realize automatic detection of the flow of the machine in the whole machine batch offline state, is higher in production efficiency, is more accurate in data, and avoids the problems of reverse flow of hydraulic oil caused by bidirectional sliding keys of manual operation handles and damage of the flowmeter.

Description

Technical Field

[0001] This invention relates to the field of excavator control technology, specifically to a method for flow safety monitoring and prevention control. Background Technology

[0002] Excavators are not only used in traditional earthmoving projects, but also widely applied in agriculture, forestry, municipal construction, and mining. Different scenarios have different requirements for the equipment, necessitating adjustable flow rates. Before leaving the factory, the opening and closing flow rate settings of the equipment must be verified. Currently, operators need to install electronic flow meters, set the flow rate value in the electronic monitor according to specific step sizes, and then compare it with the collected flow rate value. This method is inefficient and not conducive to batch vehicle factory inspection. Furthermore, some flow meters are currently designed for unidirectional operation. If operators mistakenly operate the bidirectional handle slide key, causing the oil circuit to reverse, the hydraulic oil flow direction will be opposite to the arrow on the flow meter, potentially damaging internal components and shortening its service life.

[0003] Among the existing technical solutions, patent number 2017105910929, entitled "A Hydraulic Excavator Multi-Tool Flow Limiting System and Method," includes a quick-change switch, a quick-change solenoid valve, an electromagnetic proportional pressure reducing valve, a main pump, a multi-tool, a controller, an electronic monitor, and a switching solenoid valve group. The controller is electrically connected to the electromagnetic proportional pressure reducing valve, the quick-change solenoid valve, and the switching solenoid valve group, respectively. The quick-change switch is electrically connected to the quick-change solenoid valve. The electronic monitor is connected to the controller via a CAN bus. The main pump is connected to the electromagnetic proportional pressure reducing valve via a hydraulic pipeline. By changing the flow rate of the main pump, the multi-tool is limited to operate under appropriate flow conditions. This solution achieves the purpose of protecting the tool by directly changing the tool mode and the maximum flow rate in this mode through the electronic monitor.

[0004] Patent No. 2021116519738, entitled "Control Method for a Multi-functional Excavator Utility," includes an electronic monitor, a controller, an electric control handle, and a proportional solenoid valve. The electric control handle, proportional solenoid valve, and electronic monitor are all electrically connected to the controller. After receiving an input signal from the electric control handle, the controller sends the input signal to the electronic monitor via CAN communication. The electronic monitor performs logical judgment and sends an output signal to the controller via CAN communication. The controller then outputs a signal to the proportional solenoid valve. The electronic monitor can be set with multiple utility control modes. Once the current utility control mode is selected, the flow rate can be adjusted in the utility flow rate setting interface. Each utility mode corresponds to a specific flow rate setting interface, and the flow rate settings are memorized. By setting multiple utility control modes through the electronic monitor, users can select the appropriate control mode for different utility types, making operation more convenient.

[0005] Both of these methods use electronic monitors to switch the equipment, but they still do not solve the problem that the hydraulic oil may flow in the opposite direction if the manual operation of the two-way sliding key is performed. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a flow safety monitoring and prevention control method, which solves the problem of data inaccuracy and device damage caused by the opposite flow direction of the unidirectional flow meter and hydraulic oil, and ensures the reliability of monitoring data and the safety of the flow meter.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a traffic security monitoring and prevention control method, comprising the following steps: Step 1: Define the installation method of the flow meter. When the machine clamps, the hydraulic cylinder extends, which is defined as the extended positive installation; when the machine releases, the hydraulic cylinder retracts, which is defined as the retracted positive installation. Step 2: Configure the flow meter's installation method in the electronic monitor, defining three buttons: Extended Forward Installation, Retracted Forward Installation, and Uninstallation. Step 3: Use image recognition algorithms to detect the installation method of the flow meter and connect the signal to the controller; Step 4: When extending the device in the correct orientation, select the corresponding button. The electronic monitor sends an extension signal to the controller. The controller compares the signal from the electronic monitor with the detected image recognition signal and performs corresponding control. Step 5: When retracting the forward installation, select the corresponding button. The electronic monitor sends a retract forward installation signal to the controller. The controller compares the signal sent by the electronic monitor with the detected image recognition signal and performs corresponding control. Step 6: Set the automatic flow detection start button for machine opening and closing in the electronic monitor. At this time, slide the handle key and the controller will not respond; then the automatic flow verification process will begin.

[0008] Furthermore, in step four, the corresponding control is as follows: if consistent, the controller responds to the electronic monitor setting information, slides the handle slide key, and executes the extension of the hydraulic cylinder to activate the corresponding tool clamping sensor.

[0009] Furthermore, if there is a discrepancy, the controller will invalidate the corresponding tool clamping sensor signal when the cylinder extends, and the controller will not respond to the corresponding input. It will also send an alarm message to the electronic monitor to remind personnel that the installation method is incorrect, thus avoiding the problem of the hydraulic oil flow direction being reversed with the installation method, which could cause damage to the flow meter and inaccurate data. At this time, the retraction and forward installation command can be executed.

[0010] Furthermore, in step five, the corresponding control is as follows: if consistent, the controller responds to the electronic monitor setting information, slides the handle slide key, and executes the extension of the hydraulic cylinder to activate the corresponding tool clamping sensor.

[0011] Furthermore, if there is a discrepancy, the controller will invalidate the corresponding tool clamping sensor signal when the cylinder extends, and the controller will not respond to the corresponding input. It will also send an alarm message to the electronic monitor to remind personnel that the installation method is incorrect, thus avoiding the problem of the hydraulic oil flow direction being reversed with the installation method, which could cause damage to the flow meter and inaccurate data. At this time, the retraction and forward installation command can be executed.

[0012] Furthermore, in step six, the automatic flow verification process involves the electronic monitor sending discrete flow values ​​of a specific step size to the controller in sequence, either from small to large or from large to small. The controller receives the discrete flow values ​​sent by the electronic monitor and checks whether they are within the set flow threshold.

[0013] Furthermore, if the flow rate exceeds the set threshold, the controller will not respond; if the flow rate is within the set threshold, the controller will automatically output the corresponding main pump solenoid valve current.

[0014] Furthermore, the actual flow rate collected by the electronic flow meter is connected to the controller to determine whether it is within the set deviation threshold range. If it exceeds the deviation threshold, the electronic monitor will alert an abnormality; if it does not exceed the deviation threshold, the electronic monitor will display a normal reading.

[0015] The beneficial effects of this invention are: this method can realize the automatic detection of the flow rate of the whole machine batch production line, resulting in higher production efficiency, more accurate data, and avoids the problem of hydraulic oil flow reversal caused by manual operation of the two-way sliding key of the handle, which would damage the flow meter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the process of the present invention; Figure 2 This is a flowchart illustrating the automatic traffic verification process. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0019] A traffic safety monitoring and prevention control system includes: an electronic monitor setting operation interface and prompts; The present invention provides a method for automatic flow verification and control of the controller and electronic monitor; based on this system, it provides a method for flow security monitoring and prevention control.

[0020] like Figure 1 As shown, a traffic security monitoring and prevention control method includes the following steps: Step 1: Define the installation method of the flow meter. When the clamping device tightens, the hydraulic cylinder extends, which is defined as an extended positive installation; when the clamping device loosens, the hydraulic cylinder retracts, which is defined as a retracted positive installation. This is to allow for defining the installation method on the electronic monitor.

[0021] Step 2: Configure the flow meter's installation method in the electronic monitor, defining three buttons: Extended Forward Installation, Retracted Forward Installation, and Uninstallation. Step 3: Utilize image recognition algorithms to detect the flow meter's installation method and connect the signal to the controller. This is primarily used to collect information on the electronic flow meter's installation method and compare it with the installation method set in the electronic monitor.

[0022] Step 4: When extending the cylinder for forward installation, select the corresponding button. The electronic monitor sends an extension signal to the controller. The controller compares the signal from the electronic monitor with the detected image recognition signal. If they match, the controller responds to the electronic monitor's settings, slides the handle key, and activates the corresponding tool clamping sensor for cylinder extension. If they don't match, the controller invalidates the tool clamping sensor signal, does not respond to the corresponding input, and sends an alarm to the electronic monitor to alert personnel that the installation is incorrect. This prevents hydraulic oil flow from being reversed, which could damage the flow meter and cause inaccurate data. The retraction command for forward installation can also be executed at this time. Step 5: When retracting the hydraulic cylinder for forward installation, select the corresponding button. The electronic monitor sends a retraction signal to the controller. The controller compares the signal from the electronic monitor with the detected image recognition signal. If they match, the controller responds to the electronic monitor's settings and executes the hydraulic cylinder retraction, confirming the corresponding tool release sensor. If they don't match, the controller sets the corresponding tool release sensor signal to invalid, does not respond to the corresponding input, and sends an alarm to the electronic monitor, alerting personnel that the installation method is incorrect. This prevents hydraulic oil flow from being reversed, which could damage the flow meter and cause inaccurate data. Furthermore, the forward installation extension command can be executed at this time. Step 6: Set the automatic flow detection start button for machine opening and closing in the electronic monitor. At this time, sliding the handle slider will not respond to the controller. The automatic flow verification process will then begin.

[0023] like Figure 2 As shown, the automatic flow verification process is as follows: The electronic monitor sends discrete flow values ​​of a specific step size to the controller in sequence from small to large or from large to small. The controller receives the discrete flow values ​​sent by the electronic monitor and checks whether they are within the flow setting threshold. If they exceed the flow setting threshold, the controller does not respond; if they are within the flow setting threshold, the controller automatically outputs the corresponding main pump solenoid valve current.

[0024] The actual flow rate collected by the electronic flow meter is connected to the controller to determine whether it is within the deviation threshold range of the set flow rate. If it exceeds the deviation threshold, the electronic monitor will alert an abnormality; if it does not exceed the deviation threshold, the electronic monitor will display a normal reading.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for traffic security monitoring and prevention control, characterized in that, Includes the following steps: Step 1: Define the installation method of the flow meter. When the machine clamps, the hydraulic cylinder extends, which is defined as the extended positive installation; when the machine releases, the hydraulic cylinder retracts, which is defined as the retracted positive installation. Step 2: Configure the flow meter's installation method in the electronic monitor, defining three buttons: Extended forward installation, Retracted forward installation, and Cancel installation. Step 3: Use image recognition algorithms to detect the installation method of the flow meter and connect the signal to the controller; Step 4: When extending the device in the forward direction, select the corresponding button. The electronic monitor sends an extension signal to the controller. The controller compares the signal sent by the electronic monitor with the detected image recognition signal and performs corresponding control. Step 5: When retracting the forward installation, select the corresponding button. The electronic monitor sends a retract forward installation signal to the controller. The controller compares the signal sent by the electronic monitor with the detected image recognition signal and performs corresponding control. Step 6: Set the automatic flow detection start button for machine opening and closing in the electronic monitor. At this time, slide the handle key and the controller will not respond; then the automatic flow verification process will begin. In step four, the corresponding control is as follows: If they match, the controller responds to the electronic monitor's setting information, slides the handle key, and activates the corresponding tool clamping sensor for cylinder extension; if they do not match, the controller sets the corresponding tool clamping sensor signal for cylinder extension to invalid, does not respond to the corresponding input, and sends an alarm message to the electronic monitor to remind personnel that the installation method is incorrect, thus avoiding the problem of flow meter damage and inaccurate data caused by the hydraulic oil flow direction being reversed with the installation method; and at this time, a retraction and forward installation command can be executed. In step five, the corresponding control is as follows: If they are consistent, the controller responds to the electronic monitor's setting information, slides the handle key, and executes the corresponding tool release sensor activation for cylinder retraction; if they are inconsistent, the controller sets the tool release sensor signal corresponding to cylinder retraction to invalid, the controller does not respond to the corresponding input, and sends an alarm message to the electronic monitor to remind personnel that the installation method is incorrect, thus avoiding the problem of flow meter damage and inaccurate data caused by the hydraulic oil flow direction being reversed with the installation method; and at this time, the forward installation command can be executed.

2. The method for traffic security monitoring and prevention control according to claim 1, characterized in that, In step six, the automatic flow verification process involves the electronic monitor sending discrete flow values ​​of a specific step size to the controller in sequence, either from small to large or from large to small. The controller receives the discrete flow values ​​sent by the electronic monitor and checks whether they are within the set flow threshold.

3. The method for traffic security monitoring and prevention control according to claim 2, characterized in that, If the flow rate exceeds the set threshold, the controller will not respond; if the flow rate is within the set threshold, the controller will automatically output the corresponding main pump solenoid valve current.

4. The method for traffic security monitoring and prevention control according to claim 3, characterized in that, The actual flow rate collected by the electronic flow meter is connected to the controller to determine whether it is within the deviation threshold range of the set flow rate. If it exceeds the deviation threshold, the electronic monitor will alert an abnormality; if it does not exceed the deviation threshold, the electronic monitor will display a normal reading.

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