A method and apparatus for controlling a cushion airbag of a marine work lifting platform

Abstract

The application relates to a buffer air bag control method and device of a marine lifting platform. The method comprises the following steps: collecting a pressure signal of the buffer air bag in real time through a pressure sensor, and transmitting the collected pressure signal to a control unit; the control unit calculates a real-time pressure value of the buffer air bag according to the received pressure signal; the control unit compares the calculated real-time pressure value with a threshold value, and when the real-time pressure value exceeds the threshold value, controls the buffer air bag to float or sink according to a preset control rule through a driving unit. The method compares the real-time pressure value of the buffer air bag with the threshold value, controls the floating and sinking of the buffer air bag according to the comparison result, so that the corresponding buffer air bag can be quickly and efficiently floated or sunk according to the real-time change of the air bag pressure during the loading and unloading process of the platform, the buffer effect is realized, and the load and the buffer air bag are protected from being damaged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air bag pressure, in particular to a buffer air bag control method and device for a marine lifting platform. BACKGROUND

[0002] The buffer air bag of the marine lifting platform is a buffer device for protecting the platform and load from collision with the edge of the platform when the load enters or exits the lifting platform. Air bag pressure acquisition and control is a main working state monitoring and analysis method during the process of the load entering or exiting the lifting platform in a static or dynamic mode.

[0003] At present, the air bag pressure is generally acquired in a separate independent mode. In the mode, the acquisition sensors are independently distributed at different parts of each air bag, and independently provide one-way pressure data, and then the data signals are transmitted to the central processing module in the form of current signals. The defect of the mode is that the value of the air bag pressure cannot be managed and controlled in real time, which is not conducive to the integration and automation of air bag pressure acquisition, and the sinking and floating of the air bag cannot be accurately and efficiently controlled, and the safety of the load entering or exiting the marine lifting platform is reduced. SUMMARY

[0004] In view of the above problems and technical requirements, the application provides a buffer air bag control method and device for a marine lifting platform, and the technical scheme is as follows:

[0005] In a first aspect, the application provides a buffer air bag control method for a marine lifting platform. The method comprises the following steps:

[0006] S1, acquiring a pressure signal of the buffer air bag in real time through a pressure sensor, and transmitting the acquired pressure signal to a control unit;

[0007] S2, calculating a real-time pressure value of the buffer air bag according to the received pressure signal by the control unit;

[0008] S3, comparing the calculated real-time pressure value with a threshold value by the control unit, and when the real-time pressure value exceeds the threshold value, controlling the buffer air bag to float or sink according to a preset control rule through a driving unit.

[0009] Further technical scheme is that step S1 specifically comprises the following steps:

[0010] One pressure sensor is installed at the top, middle and bottom of the buffer air bag respectively;

[0011] The top pressure signal, middle pressure signal and bottom pressure signal of the buffer air bag are acquired in real time through the pressure sensors respectively, and the acquired top pressure signal, middle pressure signal and bottom pressure signal are transmitted to the control unit.

[0012] Further, the step S2 specifically comprises:

[0013] The control unit calculates the top real-time pressure value, the middle real-time pressure value and the bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal respectively.

[0014] Further, the step S3 specifically comprises:

[0015] The control unit compares the calculated top real-time pressure value and bottom real-time pressure value with the threshold value respectively.

[0016] When the top real-time pressure value exceeds the threshold value, the buffer airbag is controlled to sink by the driving unit.

[0017] When the bottom real-time pressure value exceeds the threshold value, the buffer airbag is controlled to float by the driving unit.

[0018] Further, the method further comprises:

[0019] The control unit compares the calculated middle real-time pressure value with the threshold value, and when the middle real-time pressure value exceeds the threshold value, an alarm signal is sent by the alarm module.

[0020] In a second aspect, the application further provides a buffer airbag control device of a marine lifting platform. The device implements the steps of any of the above methods, and comprises a pressure signal acquisition unit, a control unit and a driving unit; the pressure signal acquisition unit is installed on the buffer airbag, and the driving unit is connected with the buffer airbag; the pressure signal acquisition unit and the driving unit are electrically connected with the control unit.

[0021] The pressure signal acquisition unit is used to acquire the pressure signal of the buffer airbag in real time, and transmit the acquired pressure signal to the control unit.

[0022] The control unit is used to receive the pressure signal, calculate the real-time pressure value of the buffer airbag according to the received pressure signal, and compare the real-time pressure value with the threshold value.

[0023] When the real-time pressure value exceeds the threshold value, the driving unit is used to control the buffer airbag to float or sink according to the preset control rule.

[0024] Further, the pressure signal acquisition unit comprises three pressure sensors, which are respectively installed on the top, middle and bottom of the buffer airbag, and are used to acquire and send the top pressure signal, middle pressure signal and bottom pressure signal of the buffer airbag in real time; the control unit is used to calculate the top real-time pressure value, middle real-time pressure value and bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal respectively.

[0025] Further, the control unit is further configured to compare the calculated top real-time pressure value and bottom real-time pressure value with a threshold value respectively, and when the top real-time pressure value exceeds the threshold value, the driving unit is configured to control the buffer air bag to sink, and when the bottom real-time pressure value exceeds the threshold value, the driving unit is configured to control the buffer air bag to float.

[0026] Further, the control unit further comprises an alarm module, and the control unit is further configured to compare the calculated middle real-time pressure value with a threshold value, and when the middle real-time pressure value exceeds the threshold value, the alarm module is configured to send an alarm signal.

[0027] Further, the control unit further comprises a display module, and the display module is configured to display the real-time pressure value of the buffer air bag.

[0028] The beneficial technical effects of the present application are as follows:

[0029] The present application uses multiple pressure sensors to collect pressure signals of different parts of the buffer air bag in real time, and then calculates the real-time pressure values of different parts of the air bag through the control unit and compares them with the threshold value, and controls the sinking and floating of the buffer air bag according to the comparison result, so that the corresponding buffer air bag can be quickly and efficiently floated or sunk according to the real-time change of the air bag pressure during the loading and unloading of the platform, and the buffer effect is realized while the load and the buffer air bag are protected from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a flowchart of a buffer air bag control method of a marine lifting platform according to an embodiment of the present application;

[0031] Figure 2 FIG. 2 is a flowchart of a buffer air bag control method of a marine lifting platform according to another embodiment of the present application;

[0032] Figure 3 FIG. 3 is a structural block diagram of a buffer air bag control device of a marine lifting platform according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0034] In one embodiment, as shown in FIG. 1, a buffer air bag control method of a marine lifting platform is provided, and the method comprises the following steps: Figure 1

[0035] ​Step 102, the pressure signal of the buffer air bag is collected in real time by the pressure sensor, and the collected pressure signal is transmitted to the control unit.

[0036] Step 104, the control unit calculates the real-time pressure value of the buffer air bag according to the received pressure signal.

[0037] Specifically, the control unit determines the pressure value of the buffer air bag by using its calculation module, wherein:

[0038] The linear relationship between the variables of the calculation module 1 is as follows:

[0039] OUT1=(VALUE1-MIN) / (MAX1-MIN1), wherein VALUE1 is the current signal sent by the pressure sensor to the control unit, MAX1 is the maximum value of the sensor output signal, and MIN1 is the minimum value of the sensor output signal;

[0040] The linear relationship between the variables of the calculation module 2 is as follows:

[0041] OUT2=VALUE(MAX-MIN)+MIN, wherein VALUE is OUT1 of the calculation module 1, MAX2 is the maximum range of the sensor 200KP, and MIN2 is the minimum range of the sensor 0KP.

[0042] The value of OUT2 output by the calculation module 2 is the calculated air bag pressure value, with the unit of KP.

[0043] Step 106, the control unit compares the calculated real-time pressure value with the threshold value, and when the real-time pressure value exceeds the threshold value, controls the buffer air bag to float or sink according to the preset control rule through the driving unit.

[0044] Specifically, the threshold value is 110-120kpa, preferably 120kpa.

[0045] In another embodiment, as shown in Figure 2 A buffer air bag control method of the Zhonghai Gong lifting platform is provided, and the method comprises the following steps in the embodiment:

[0046] Step 202, one pressure sensor is installed at the top, middle and bottom of the buffer air bag.

[0047] Step 204, the top pressure signal, middle pressure signal and bottom pressure signal of the buffer air bag are collected in real time by the pressure sensor respectively, and the collected top pressure signal, middle pressure signal and bottom pressure signal are transmitted to the control unit.

[0048] Step 206, the control unit calculates the top real-time pressure value, the middle real-time pressure value and the bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal respectively.

[0049] Specifically, the control unit determines the real-time pressure values of the top, middle and bottom of the buffer airbag by using its calculation module, wherein:

[0050] The linear relationship between the variables of the calculation module 1 is as follows:

[0051] OUT1 = (VALUE1-MIN) / (MAX1-MIN1), wherein VALUE1 is the current signal sent by the pressure sensor to the control unit, MAX1 is the maximum value of the sensor output signal, and MIN1 is the minimum value of the sensor output signal; this step calculates the output signals of the top pressure sensor, middle pressure sensor and bottom pressure sensor respectively.

[0052] The linear relationship between the variables of the calculation module 2 is as follows:

[0053] OUT2 = VALUE(MAX-MIN) + MIN, wherein VALUE is OUT1 of the calculation module 1, MAX2 is the maximum range of the sensor 200KP, and MIN2 is the minimum range of the sensor 0KP.

[0054] The value of OUT2 output by the calculation module 2 is the calculated airbag pressure value, i.e. the top real-time pressure value, the middle real-time pressure value and the bottom real-time pressure value of the buffer airbag are calculated respectively, with the unit of KP.

[0055] Step 208, the control unit compares the calculated top real-time pressure value and bottom real-time pressure value with the threshold value respectively.

[0056] Step 210, when the top real-time pressure value exceeds the threshold value, the buffer airbag is controlled to sink by the driving unit; when the bottom real-time pressure value exceeds the threshold value, the buffer airbag is controlled to float by the driving unit.

[0057] Specifically, the threshold value is 110-120kpa, preferably 120kpa.

[0058] Optionally, in one embodiment, step 208 further comprises:

[0059] The control unit compares the calculated middle real-time pressure value with the threshold value, and when the middle real-time pressure value exceeds the threshold value, an alarm signal is sent by the alarm module.

[0060] Specifically, when the middle real-time pressure value exceeds the threshold value, the control unit sends an alarm signal to the outside through the alarm module, at which time the external action stops and the load stops entering and exiting, thereby avoiding damage.

[0061] Based on the same inventive concept, the application further provides a buffer airbag control device of a marine lifting platform for implementing the buffer airbag control method of the marine lifting platform as described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more buffer airbag control device embodiments of the marine lifting platform provided below can refer to the limitations of the buffer airbag control method of the marine lifting platform described above, which will not be repeated here.

[0062] In one embodiment, as shown in Figure 3 A buffer airbag control device of a marine lifting platform is provided, which includes a pressure signal acquisition unit, a control unit and a driving unit; the pressure signal acquisition unit is installed on the buffer airbag, and the driving unit is connected with the buffer airbag; the pressure signal acquisition unit and the driving unit are both electrically connected with the control unit.

[0063] The pressure signal acquisition unit is used to acquire the pressure signal of the buffer airbag in real time, and transmit the acquired pressure signal to the control unit.

[0064] The control unit is used to receive the pressure signal, calculate the real-time pressure value of the buffer airbag according to the received pressure signal, and compare the real-time pressure value with a threshold value.

[0065] When the real-time pressure value exceeds the threshold value, the driving unit is used to control the buffer airbag to float or sink according to a preset control rule.

[0066] Optionally, the pressure signal acquisition unit includes three pressure sensors, which are respectively installed at the top, middle and bottom of the buffer airbag, and are used to acquire and send the top pressure signal, middle pressure signal and bottom pressure signal of the buffer airbag in real time; the control unit is used to calculate the top real-time pressure value, middle real-time pressure value and bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal, respectively.

[0067] Specifically, the control unit uses its calculation module to determine the pressure values of the top, middle and bottom of the buffer airbag, wherein:

[0068] The linear relationship between the variables of the calculation module 1 is as follows:

[0069] OUT1=(VALUE1-MIN) / (MAX1-MIN1), wherein VALUE1 is the current signal sent by the pressure sensor to the control unit, MAX1 is the maximum value of the sensor output signal, and MIN1 is the minimum value of the sensor output signal.

[0070] The linear relationship between the variables of the calculation module 2 is as follows:

[0071] OUT2 = VALUE(MAX-MIN) + MIN, wherein VALUE is OUT1 of the calculation module 1, MAX2 is a maximum range 200KP of the sensor, and MIN2 is a minimum range 0KP of the sensor.

[0072] The value of OUT2 output by the calculation module 2 is a calculated airbag pressure value at a position of the pressure sensor, in units of KP.

[0073] Optionally, the control unit is further configured to compare the calculated top real-time pressure value and bottom real-time pressure value with a threshold value respectively, and when the top real-time pressure value exceeds the threshold value, the driving unit is configured to control the buffer airbag to sink, and when the bottom real-time pressure value exceeds the threshold value, the driving unit is configured to control the buffer airbag to float.

[0074] Specifically, the threshold value is 110-120kpa, and preferably 120kpa.

[0075] Optionally, the control unit further comprises an alarm module, and the control unit is further configured to compare the calculated middle real-time pressure value with a threshold value, and when the middle real-time pressure value exceeds the threshold value, the alarm module is configured to send an alarm signal.

[0076] Specifically, when the middle real-time pressure value exceeds the threshold value, the control unit sends an alarm signal to the outside through the alarm module, at which time the external action stops and the load stops in and out, so as to avoid damage.

[0077] Optionally, the control unit further comprises a display module, and the display module is configured to display the real-time pressure value of the buffer airbag.

[0078] Specifically, the display module is preferably a touch display screen, which can monitor the real-time buffer airbag pressure value.

[0079] The technical features of the above embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0080] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method of controlling a cushion gas bag of a marine lift platform, characterized by, The method comprises: S1, collecting the top pressure signal, the middle pressure signal and the bottom pressure signal of the buffer airbag in real time through three pressure sensors respectively installed on the top, middle and bottom of the buffer airbag, and transmitting the collected top pressure signal, middle pressure signal and bottom pressure signal to a control unit; S2, the control unit calculates the top real-time pressure value, the middle real-time pressure value and the bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal respectively; S3, the control unit compares the calculated top real-time pressure value and bottom real-time pressure value with a threshold value respectively, and when the top real-time pressure value exceeds the threshold value, controls the buffer airbag to sink through a driving unit; When the bottom real-time pressure value exceeds the threshold value, the buffer airbag is controlled to float up by the driving unit.

2. The method of claim 1, wherein, The method further comprises: the control unit compares the calculated middle real-time pressure value with a threshold value, and when the middle real-time pressure value exceeds the threshold value, the alarm module sends an alarm signal.

3. A cushion gas control device for a marine lift platform, characterized by, The device implements the steps of the method of claim 1 or 2, and comprises a pressure signal acquisition unit, a control unit and a driving unit; The pressure signal acquisition unit is installed on the buffer airbag, and the driving unit is connected with the buffer airbag; the pressure signal acquisition unit and the driving unit are electrically connected with the control unit; The pressure signal acquisition unit is used for collecting the pressure signal of the buffer airbag in real time and transmitting the collected pressure signal to the control unit; The control unit is used for receiving the pressure signal, calculating the real-time pressure value of the buffer airbag according to the received pressure signal, and comparing the real-time pressure value with a threshold value; When the real-time pressure value exceeds the threshold value, the driving unit is used for controlling the buffer airbag to float up or sink according to a preset control rule; The pressure signal acquisition unit comprises three pressure sensors, which are respectively installed on the top, middle and bottom of the buffer airbag, and are used for collecting and sending the top pressure signal, the middle pressure signal and the bottom pressure signal of the buffer airbag in real time; The control unit is used for calculating the top real-time pressure value, the middle real-time pressure value and the bottom real-time pressure value of the buffer airbag according to the received top pressure signal, middle pressure signal and bottom pressure signal respectively; The control unit is also used for comparing the calculated top real-time pressure value and bottom real-time pressure value with a threshold value respectively, and when the top real-time pressure value exceeds the threshold value, the driving unit is used for controlling the buffer airbag to sink; When the bottom real-time pressure value exceeds the threshold value, the driving unit is used for controlling the buffer airbag to float up.

4. The apparatus of claim 3, wherein, The control unit further comprises an alarm module; The control unit is also used for comparing the calculated middle real-time pressure value with a threshold value, and when the middle real-time pressure value exceeds the threshold value, the alarm module is used for sending an alarm signal.

5. The apparatus of claim 3 or 4, wherein, The control unit further comprises a display module for displaying the real-time pressure value of the buffer air bag.

Images