Method, device, storage medium and processor for determining hose recovery length

Abstract

The embodiment of the present application provides a method, device, storage medium and processor for determining the recovery length of a water hose. The method includes: in the process of recovering multiple water hoses, periodically obtaining the rewinding current of the rewinding solenoid valve; determining the rewinding speed corresponding to the rewinding current in each cycle to determine the recovery length of the water hose in each cycle; determining the recovery operation duration of the water hose at the target time point based on the rewinding current; determining the first water hose length that has been recovered at the target time point based on the recovery operation duration and the recovery length of the water hose in each cycle; and determining the first water hose length as the actual recovery length of the water hose at the target time point. Through the above technical solution, the recovery length of the water hose can be determined based on the periodically obtained rewinding current, without the need for adding a speed measuring or distance measuring device, and without manual intervention. The actual recovery length of the water hose can be obtained in real time and accurately, reducing the time cost and labor cost of determining the recovery length of the water hose.

Description

Technical Field

[0001] The present application relates to the field of fire trucks, and in particular to a method, device, storage medium, and processor for determining a hose recovery length. Background Art

[0002] Currently, the laying and recovery of fire hoses is primarily a manual process. The actual length of the recovered hose is typically determined based on the fire truck's mileage or manual estimation. However, due to the complex working conditions of hose recovery operations, the hose may be misplaced during the retraction process. In these cases, the hose may need to be released and re-recovered. In this case, it is difficult to determine the actual length of the hose recovered in real time using these methods, and the determined length is not accurate, resulting in high time and labor costs. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a method, device, storage medium and processor for determining the length of a water hose recovery.

[0004] To achieve the above-mentioned object, the present application provides, in a first aspect, a method for determining the retraction length of a water hose, the method being applied to a fire truck, the fire truck including a plurality of water hoses connected by a connector and a retraction solenoid valve, the method comprising:

[0005] During the recovery operation of multiple hoses, the rewinding current of the rewinding solenoid valve is periodically obtained;

[0006] Determine the retraction speed corresponding to the retraction current in each cycle to determine the retraction length of the water hose in each cycle;

[0007] Determine the hose recovery operation time at the target time point based on the hose recovery current;

[0008] Determine the length of the first hose that has been recovered at the target time point based on the recovery operation duration and the recovered length of the hose in each cycle;

[0009] The first hose length is determined as the actual recovered length of the hose at the target time point.

[0010] In an embodiment of the present application, the fire truck also includes a hose unwinding solenoid valve, and the method also includes: when starting the hose unwinding operation for multiple water hoses, periodically obtaining the hose unwinding current of the hose unwinding solenoid valve; determining the hose unwinding speed corresponding to the hose unwinding current in each cycle to determine the hose unwinding length in each cycle; determining the hose unwinding operation duration at the target time point based on the hose unwinding current; determining the length of the second hose unwinding at the target time point based on the hose unwinding operation duration and the hose unwinding length in each cycle; and determining the actual recovery length of the hose at the target time point based on the first hose length and the second hose length.

[0011] In an embodiment of the present application, the method also includes: when the output current of the take-up solenoid valve or the unwinding solenoid valve is zero, determining that the fire truck stops the recovery operation or stops the unwinding operation; when the output current of the take-up solenoid valve or the unwinding solenoid valve is greater than zero, determining that the fire truck performs the recovery operation or performs the unwinding operation; determining the time period during which the output current of the take-up solenoid valve is greater than zero as the recovery operation time period during which the water hose performs the recovery operation; and determining the time period during which the output current of the unwinding solenoid valve is greater than zero as the unwinding operation time period during which the water hose performs the unwinding operation.

[0012] In an embodiment of the present application, the fire truck also includes a belt taking-up mechanism, which includes a joint detection device. The method also includes: determining a first number and a second number of joints detected by the joint detection device within the recovery operation time and the release operation time; determining the difference between the first number and the second number as the actual number of joints that the water hose has recovered at the target time point; determining the first recovery length of the water hose at the target time point based on the actual number of joints and the preset length of the water hose; determining the second recovery length of the water hose at the target time point based on the second number; and determining the sum of the first recovery length and the second recovery length as the actual recovery length of the water hose at the target time point.

[0013] In an embodiment of the present application, determining the first number and second number of joints detected by the joint detection device within the recovery operation time and the tape unwinding operation time includes: determining the time point when the joint reaches the center point of the detection area of ​​the joint detection device as the effective detection time point of the joint detection device; determining the first number and the second number as the number of first effective detection time points within the recovery operation time and the number of second effective detection time points within the tape unwinding operation time, respectively.

[0014] In an embodiment of the present application, determining the second recovery length of the water hose at the target time point based on the second quantity includes: when the second number is greater than a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the first time length between the effective detection time point of the joint detected for the last time within the unwinding operation time and the target time point; determining the first unwinding length of the water hose based on the first time length and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the first unwinding length and the preset length of the water hose as the second recovery length of the water hose at the target time point.

[0015] In an embodiment of the present application, determining the second recovery length of the water hose at the target time point based on the second quantity includes: when the second number is equal to a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the second time period between the effective detection time point of the joint detected for the last time within the unwinding operation time and the stop time point of the recovery operation; determining the reeled-in length of the water hose within the second time period based on the second time period and the reeling current of the reeling solenoid valve in each cycle; determining the third time period between the start time point of the unwinding operation and the target time point; determining the second unwinding length of the water hose within the third time period based on the third time period and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the reeled-in length and the second unwinding length as the second recovery length of the water hose at the target time point.

[0016] A second aspect of the present application provides a machine-readable storage medium having instructions stored thereon. When the instructions are executed by a processor, the processor is configured to execute the above-mentioned method for determining the hose recovery length.

[0017] A third aspect of the present application provides a processor configured to execute the above-mentioned method for determining the hose recovery length.

[0018] A fourth aspect of the present application provides a device for determining the recovery length of a water hose, comprising the above-mentioned processor.

[0019] A fifth aspect of the present application provides a fire truck, comprising:

[0020] Multiple hoses connected by joints;

[0021] a take-up solenoid valve, configured to output a take-up current to perform a retrieving operation; and

[0022] The above-mentioned device for determining the length of the water hose recovery.

[0023] In an embodiment of the present application, the fire truck further includes: a tape-releasing solenoid valve for outputting a tape-releasing current to perform a tape-releasing operation.

[0024] In an embodiment of the present application, the fire truck further includes: a belt taking-up mechanism including a joint detection device for detecting the joint of the water hose.

[0025] Through the above technical solution, the corresponding belt-winding speed can be determined according to the periodically obtained belt-winding current, and the water hose recovery length can be determined according to the belt-winding speed in each cycle. There is no need to add speed measuring or distance measuring devices, and no manual participation is required. The actual recovery length of the water hose can be obtained in real time and accurately, reducing the time cost and labor cost of determining the water hose recovery length.

[0026] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0028] Figure 1 The structure diagram of a fire truck according to an embodiment of the present application is schematically shown;

[0029] Figure 2 The following schematically illustrates a flow chart of a method for determining a hose recovery length according to an embodiment of the present application;

[0030] Figure 3 The internal structure diagram of a computer device according to an embodiment of the present application is schematically shown.

[0031] Reference numerals

[0032] 1. Chassis; 2. Belt taking-up mechanism; 3. Belt sorting mechanism;

[0033] 4. Hose box; 21. Take-up rack; 22. Conveyor belt;

[0034] 23. Clamping device; 24. Hydraulic motor; 25. Hose joint detector;

[0035] 31. Motor; 32. Chain drive mechanism; 33. Torsion bar;

[0036] 34. Tape handling machine head. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] In one embodiment, a fire truck is provided, comprising:

[0039] Multiple hoses connected by joints;

[0040] a take-up solenoid valve, configured to output a take-up current to perform a retrieving operation; and

[0041] Device for determining hose recovery length.

[0042] The fire hose can refer to a fire hose, which is a flexible tube used to transport high-pressure water or flame-retardant liquids such as foam. The hose can be connected via connectors. If the retraction solenoid valve outputs a retraction current, the fire truck may be performing a retraction operation and can retract multiple hoses.

[0043] In one embodiment, the fire truck further includes: a tape unwinding solenoid valve, configured to output a tape unwinding current to perform a tape unwinding operation.

[0044] During the hose retraction process, the hose may become misaligned. In this case, the hose can be unwound a short distance and then retracted to correct any misalignment. Specifically, the unwinding solenoid valve can output a current to execute the unwinding operation. If the unwinding solenoid valve outputs a current, the fire truck may be unwinding, allowing multiple hoses to be unwound via the conveyor belt.

[0045] In one embodiment, the fire truck further includes a hose take-up mechanism including a joint detection device for detecting the joint of the hose. The joint detection device may be a detection device capable of detecting a target object. The joint detection device is mounted on the take-up frame and can be used to detect the joint of the hose.

[0046] In one embodiment, Figure 1 As shown, a structural schematic diagram of a fire truck is provided.

[0047] A fire truck can be a hose laying truck. It includes a chassis 1, a hose take-up mechanism 2, a hose management mechanism 3, and a hose box 4. The hose take-up mechanism 2 is mounted directly above the cab where the chassis 1 is located and is used to transfer the hose to the hose box 4. The hose box 4 is used to store the hose.

[0048] The belt taking-up mechanism 2 includes a belt taking-up frame 21, a conveyor belt 22, a clamping device 23, a hydraulic motor 24 and a hose joint detector 25. The hydraulic motor 24 can be used to drive the conveyor belt 22 to rotate. The direction of rotation of the conveyor belt 22 can be a first direction from the front to the rear of the fire truck, or a second direction from the rear to the front of the fire truck. If the direction of rotation of the conveyor belt 22 is the first direction, the water hose can be conveyed to the water hose box 4. If the direction of rotation of the conveyor belt 22 is the second direction, the water hose can be transferred out of the water hose box 4. The clamping device 23 can be used to clamp the water hose to provide sufficient recovery force so that as much water hose as possible can be stored in the water hose box 4. The water hose joint detector 25 can be used to detect water hose joints.

[0049] The tape handling mechanism 3 includes a motor 31, a chain transmission mechanism 32, a torsion bar 33 and a tape handling head 34. The tape handling mechanism 3 can be used to place the water hose into the water hose box 4. Among them, the motor 31 can drive the chain transmission mechanism 32 to operate. The chain transmission mechanism 32 includes a left chain and a right chain. The head end of each chain is close to the tape taking-up mechanism 2, and the end is connected to the torsion bar 33. That is, the end of the left chain and the end of the right chain are connected by the torsion bar 33. The two ends of the tape handling head 34 are respectively installed on the left chain and the right chain of the chain transmission mechanism 32. When the motor 31 drives the chain transmission mechanism 32 to operate, it can drive the tape handling head 34 to move toward the head end of the chain, and can also drive the tape handling head 34 to move toward the end of the chain.

[0050] When the fire truck performs a recycling operation, the conveyor belt 22 rotates in a first direction, the clamping device 23 is activated, and the tape unwinding head 34 can move toward the beginning and end of the chain. At this time, the tape rewinding speed is the linear velocity of the conveyor belt 22 rotating in the first direction. Furthermore, if the tape unwinding mechanism 3 fails to neatly arrange the hose during the recycling operation, the conveyor belt 22 can be controlled to rotate in a second direction to recycle the hose. At this time, the tape unwinding speed is the linear velocity of the conveyor belt 22 rotating in the second direction.

[0051] Figure 2 The following schematically shows a flow chart of a method for determining the length of a hose recovery according to an embodiment of the present application. Figure 2 As shown, in one embodiment of the present application, a method for determining the retraction length of a water hose is provided. The method is applied to a fire truck, which includes a plurality of water hoses connected by a connector and a retraction solenoid valve, and includes the following steps:

[0052] Step 201 : During the process of recovering a plurality of water hoses, periodically obtain the retrieving current of the retrieving solenoid valve.

[0053] Step 202 : determining a take-up speed corresponding to the take-up current in each cycle to determine a reclaimed length of the hose in each cycle.

[0054] Step 203 : determining the hose retrieving operation duration at the target time point according to the hose retrieving current.

[0055] Step 204 : determining the length of the first hose that has been recovered at the target time point based on the recovery operation duration and the recovered length of the hose in each cycle.

[0056] Step 205 : determining the first hose length as the actual recovered length of the hose at the target time point.

[0057] During the recycling operation of multiple water hoses, the processor can periodically obtain the take-up current of the take-up solenoid valve. The periodic acquisition can refer to acquisition according to a preset interval. If the speed of the recycling operation is uniform, its instantaneous speed and actual speed are consistent. If the time interval is short enough, the instantaneous speed of the recycling operation can be used as the average speed to determine the actual recycling length of the water hose by the instantaneous speed of the take-up within a sufficiently short time interval. Thus, the preset interval length can be set as small as possible. For example, the take-up current of the take-up solenoid valve can be obtained every 1s. Afterwards, the processor can determine the take-up speed corresponding to the take-up current in each cycle to determine the recycling length of the water hose in each cycle.

[0058] In one embodiment, before initiating a recovery operation, the processor may first obtain the fire truck's historical take-up current and the historical take-up speeds corresponding to the historical take-up currents. The processor may then establish a take-up current-to-speed comparison table based on the historical take-up currents and speeds. The take-up current-to-speed comparison table includes each historical take-up current and the corresponding historical take-up speed. After determining the take-up current for each cycle, the processor may determine the take-up speed corresponding to the take-up current for each cycle based on the historical data in the take-up current-to-speed comparison table.

[0059] For example, if the take-up current in a cycle is 10.5A, and the take-up current-to-speed comparison table includes a historical take-up speed of 6m / s corresponding to a historical take-up current of 10A, and a historical take-up speed of 8m / s corresponding to a historical take-up current of 11A, the processor can interpolate the historical take-up speeds of 6m / s and 8m / s to determine the take-up speed corresponding to a take-up current of 10.5A. In other words, the take-up speed corresponding to a take-up current of 10.5A is 7m / s. If the cycle is 1s, the take-up length of the cycle can be determined to be 7m.

[0060] After determining the hose reclaim length within each cycle, the processor can determine the hose reclaim operation duration at the target time point based on the hose reclaim current. The processor can then determine the first hose length reclaimed at the target time point based on the reclaim operation duration and the hose reclaim length within each cycle. Specifically, the processor can determine the sum of the hose reclaim lengths within each cycle within the reclaim operation duration, and determine this sum as the first hose length reclaimed at the target time point. The processor can further determine this first hose length as the actual hose reclaim length at the target time point.

[0061] Through the above technical solution, the corresponding belt-winding speed can be determined according to the periodically obtained belt-winding current, and the water hose recovery length can be determined according to the belt-winding speed in each cycle. There is no need to add speed measuring or distance measuring devices, and no manual participation is required. The actual recovery length of the water hose can be obtained in real time and accurately, reducing the time cost and labor cost of determining the water hose recovery length.

[0062] In one embodiment, the fire truck also includes a hose unwinding solenoid valve, and the method also includes: when starting the hose unwinding operation for multiple water hoses, periodically obtaining the hose unwinding current of the hose unwinding solenoid valve; determining the hose unwinding speed corresponding to the hose unwinding current in each cycle to determine the hose unwinding length in each cycle; determining the hose unwinding operation duration at a target time point based on the hose unwinding current; determining the length of the second hose unwinding at the target time point based on the hose unwinding operation duration and the hose unwinding length in each cycle; and determining the actual recovery length of the hose at the target time point based on the first hose length and the second hose length.

[0063] The fire truck may also include a hose retraction solenoid valve. During the hose retraction process, the hose may become misaligned. In this case, the hose can be unwound for a short time and then retracted to eliminate any misalignment. Specifically, the unwinding operation of multiple hoses can be initiated. When the unwinding operation is initiated, the processor can periodically acquire the unwinding current of the unwinding solenoid valve. Periodic acquisition can refer to acquisition at preset intervals. If the unwinding operation is uniform, the instantaneous speed and the actual speed are consistent. If the time interval is sufficiently short, the instantaneous speed of the unwinding operation can be used as the average speed, allowing the unwinding length of the hose to be determined based on the instantaneous speed within the sufficiently short time interval. Therefore, the preset interval can be set as short as possible. For example, the unwinding current of the unwinding solenoid valve can be acquired every 1 second. The processor can then determine the unwinding speed corresponding to the unwinding current within each cycle to determine the unwinding length of the hose within each cycle.

[0064] In one embodiment, before initiating a tape unwinding operation, the processor may first obtain the fire truck's historical unwinding current and the historical unwinding speeds corresponding to the historical unwinding currents. The processor may then establish a unwinding current-unwinding speed comparison table based on the historical unwinding currents and speeds. The unwinding current-unwinding speed comparison table includes each historical unwinding current and the corresponding historical unwinding speed. After determining the unwinding current for each cycle, the unwinding speed corresponding to the unwinding current for each cycle may be determined based on the historical data in the unwinding current-unwinding speed comparison table.

[0065] For example, if the payout current for a cycle is 8A, and the payout current-payout speed comparison table includes a historical payout speed of 4m / s corresponding to the historical payout current of 8A, then the payout speed corresponding to the payout current for that cycle can be determined to be 4m / s. If the payout current-payout speed comparison table does not include a historical payout speed corresponding to the historical payout current of 8A, but instead includes a historical payout speed of 7m / s corresponding to the historical payout current of 7A and a historical payout speed of 9m / s corresponding to the historical payout current of 9A, then the processor can determine the payout speed corresponding to the payout current of 8A through interpolation based on the historical payout speeds of 7m / s and 9m / s. In other words, the payout speed corresponding to the payout current of 8A is 8m / s. If the cycle is 1s, then the payout length of that cycle can be determined to be 8m.

[0066] In one embodiment, the method also includes: when the output current of the take-up solenoid valve or the unwinding solenoid valve is zero, determining that the fire truck stops the recovery operation or stops the unwinding operation; when the output current of the take-up solenoid valve or the unwinding solenoid valve is greater than zero, determining that the fire truck performs the recovery operation or performs the unwinding operation; determining the time period during which the output current of the take-up solenoid valve is greater than zero as the recovery operation time period during which the water hose performs the recovery operation; and determining the time period during which the output current of the unwinding solenoid valve is greater than zero as the unwinding operation time period during which the water hose performs the unwinding operation.

[0067] If the output current of the take-up solenoid valve or the unwinding solenoid valve is zero, the processor can determine that the fire truck has stopped the retrieving operation or the unwinding operation. If the output current of the take-up solenoid valve or the unwinding solenoid valve is greater than zero, the processor can determine that the fire truck has performed a retrieving operation or the unwinding operation. Furthermore, the processor can determine the duration during which the output current of the take-up solenoid valve is greater than zero as the retrieving operation duration of the hose, and can determine the duration during which the output current of the unwinding solenoid valve is greater than zero as the unwinding operation duration of the hose.

[0068] In one embodiment, the fire truck also includes a belt-retracting mechanism, which includes a joint detection device. The method also includes: determining a first number and a second number of joints detected by the joint detection device within the recovery operation time and the release operation time; determining the difference between the first number and the second number as the actual number of joints that the water hose has recovered at the target time point; determining a first recovery length of the water hose at the target time point based on the actual number of joints and the preset length of the water hose; determining a second recovery length of the water hose at the target time point based on the second number; and determining the sum of the first recovery length and the second recovery length as the actual recovery length of the water hose at the target time point.

[0069] Among them, the fire truck also includes a belt-retracting mechanism. The belt-retracting mechanism includes a joint detection device. The joint detection device may refer to a detection device with the function of detecting a target object. The joint detection device may be used to detect the joints of the water hose. The processor may determine the first number and the second number of joints detected by the joint detection device within the recovery operation time and the release operation time. Thereafter, the processor may determine the difference between the first number and the second number as the actual number of joints that have been recovered in the water hose at the target time point. The processor may determine the first recovery length of the water hose at the target time point based on the actual number of joints and the preset length of the water hose. Thereafter, the processor may determine the second recovery length of the water hose at the target time point based on the second number, and may determine the sum of the first recovery length and the second recovery length as the actual recovery length of the water hose at the target time point.

[0070] In one embodiment, determining the first number and second number of joints detected by the joint detection device within the recycling operation time and the tape unwinding operation time includes: determining the time point when the joint reaches the center point of the detection area of ​​the joint detection device as the effective detection time point of the joint detection device; determining the first number and the second number as the number of first effective detection time points within the recycling operation time and the number of second effective detection time points within the tape unwinding operation time, respectively.

[0071] Since the joint detection device may have a certain detection area, the joint detection device can detect the joint multiple times from the time the joint enters the detection area to the time the joint leaves the detection area. That is, the situation where the same joint is detected multiple times at multiple time points may occur. At this time, the processor can determine the time point when the joint detection device reaches the center point of the detection area as the effective detection time point of the joint detection device. If the joint detection device also detects the joint at other time points, at this time, although the joint is in the detection area, its detection time point is an invalid detection time point. If joint A stays there after arriving at the center point of the detection area, then the joint detection device will still detect the joint A. For example, the time point when joint A arrives at the center point of the detection area is 9:05. At 9:06, joint A is still in the center of the detection area and the joint detection device detects the joint A. At this time, the time point 9:06 when the joint A is detected is also an invalid detection time point.

[0072] From the start of the recycling operation, if the joint reaches the center point of the detection area, the joint detection device detects the joint, and the detection time point is an effective detection time point. At this time, the first number of joints detected within the duration of the recycling operation can be increased by one until the recycling operation stops. That is, the first number of joints detected within the duration of the recycling operation is the number of the first effective detection time point within the duration of the recycling operation. From the start of the unwinding operation, if the joint reaches the center point of the detection area, the joint detection device detects the joint, and the detection time point is an effective detection time point. At this time, the second number of joints detected within the duration of the unwinding operation can be increased by one until the unwinding operation stops. That is, the second number of joints detected within the duration of the unwinding operation is the number of the second effective detection time point within the duration of the unwinding operation.

[0073] In one embodiment, determining the second recovery length of the water hose at a target time point based on the second quantity includes: when the second number is greater than a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the first time length between the effective detection time point of the joint detected for the last time within the unwinding operation time and the target time point; determining the first unwinding length of the water hose based on the first time length and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the first unwinding length and the preset length of the water hose as the second recovery length of the water hose at the target time point.

[0074] Among them, the preset value can be zero. If the second number is greater than the preset value, it can be said that a joint is released during the unwinding operation. At this time, the processor can determine the effective detection time point of the joint detected by the joint detection device for the last time during the unwinding operation. Afterwards, the processor can determine the first time period between the effective detection time point of the joint detected for the last time during the unwinding operation and the target time point, and can determine the first unwinding length of the water hose within the first time period based on the first time period and the unwinding current of the unwinding solenoid valve in each cycle. At this time, the processor can further determine the length difference between the first unwinding length and the preset length of the water hose as the second recovery length of the water hose at the target time point. Among them, the preset length of the water hose can refer to the standard length of the water hose. For example, it can be 100m.

[0075] In one embodiment, determining the second recovery length of the water hose at the target time point based on the second quantity includes: when the second number is equal to a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the second time period between the effective detection time point of the joint detected for the last time within the unwinding operation time and the stop time point of the recovery operation; determining the reeled-in length of the water hose within the second time period based on the second time period and the reeling current of the reeling solenoid valve in each cycle; determining the third time period between the start time point of the unwinding operation and the target time point; determining the second unwinding length of the water hose within the third time period based on the third time period and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the reeled-in length and the second unwinding length as the second recovery length of the water hose at the target time point.

[0076] The preset value may be zero. If the second number is equal to the preset value, it indicates that no joints were released during the unwinding operation. At this point, the processor may determine the effective detection time point of the last joint detected by the joint detection device during the unwinding operation. The processor may then determine a second duration between the effective detection time point of the last joint detected during the unwinding operation and the stop time point of the reclaiming operation, and determine the retracted length of the hose during the second duration based on the second duration and the retracting current of the retracting solenoid valve during each cycle. The processor may determine a third duration between the start time point of the unwinding operation and the target time point, and determine the second unwinding length of the hose during the third duration based on the third duration and the unwinding current of the unwinding solenoid valve during each cycle. The processor may determine the difference between the retracted length of the hose during the second duration and the second unwinding length of the hose during the third duration, and may determine this length difference as the second retracted length of the hose at the target time point.

[0077] In one embodiment, after determining the actual hose recovery length at the target time, the processor may transmit the actual recovery length to a display device for display. The display device may be a touch screen or display screen with display capabilities. Displaying the actual recovery length on the display device facilitates recovery supervisors to understand the hose recovery status.

[0078] Through the above technical solution, the corresponding belt-winding speed can be determined according to the periodically obtained belt-winding current, and the water hose recovery length can be determined according to the belt-winding speed in each cycle. There is no need to add speed measuring or distance measuring devices, and no manual participation is required. The actual recovery length of the water hose can be obtained in real time and accurately, reducing the time cost and labor cost of determining the water hose recovery length.

[0079] Figure 2 FIG. 1 is a flow chart of a method for determining the length of a hose recovery in one embodiment. Figure 2The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 2 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0080] In one embodiment, a storage medium is provided, on which a program is stored. When the program is executed by a processor, the method for determining the hose recovery length is implemented.

[0081] In one embodiment, a processor is provided, and the processor is configured to run a program, wherein the program executes the above-mentioned method for determining the hose recovery length when running.

[0082] In one embodiment, a device for determining a hose recovery length is provided, comprising the processor described above.

[0083] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 3 As shown. The computer device includes a processor A01, a network interface A02, a memory (not shown in the figure) and a database (not shown in the figure) connected via a system bus. Among them, the processor A01 of the computer device is used to provide computing and control capabilities. The memory of the computer device includes an internal memory A03 and a non-volatile storage medium A04. The non-volatile storage medium A04 stores an operating system B01, a computer program B02 and a database (not shown in the figure). The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 in the non-volatile storage medium A04. The database of the computer device is used to store data such as the actual recovery length of the water hose at the target time point. The network interface A02 of the computer device is used to communicate with an external terminal through a network connection. When the computer program B02 is executed by the processor A01, a method for determining the recovery length of the water hose is implemented.

[0084] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0085] An embodiment of the present application provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, the following steps are implemented: in the process of recovering multiple water hoses, the belt-receiving current of the belt-receiving solenoid valve is periodically obtained; the belt-receiving speed corresponding to the belt-receiving current in each cycle is determined to determine the recovered length of the water hose in each cycle; the recovery operation duration of the water hose at a target time point is determined based on the belt-receiving current; the length of the first water hose that has been recovered at the target time point is determined based on the recovery operation duration and the recovered length of the water hose in each cycle; and the length of the first water hose is determined as the actual recovered length of the water hose at the target time point.

[0086] In one embodiment, the fire truck also includes a hose unwinding solenoid valve, and the method also includes: when starting the hose unwinding operation for multiple water hoses, periodically obtaining the hose unwinding current of the hose unwinding solenoid valve; determining the hose unwinding speed corresponding to the hose unwinding current in each cycle to determine the hose unwinding length in each cycle; determining the hose unwinding operation duration at a target time point based on the hose unwinding current; determining the length of the second hose unwinding at the target time point based on the hose unwinding operation duration and the hose unwinding length in each cycle; and determining the actual recovery length of the hose at the target time point based on the first hose length and the second hose length.

[0087] In one embodiment, the method also includes: when the output current of the take-up solenoid valve or the unwinding solenoid valve is zero, determining that the fire truck stops the recovery operation or stops the unwinding operation; when the output current of the take-up solenoid valve or the unwinding solenoid valve is greater than zero, determining that the fire truck performs the recovery operation or performs the unwinding operation; determining the time period during which the output current of the take-up solenoid valve is greater than zero as the recovery operation time period during which the water hose performs the recovery operation; and determining the time period during which the output current of the unwinding solenoid valve is greater than zero as the unwinding operation time period during which the water hose performs the unwinding operation.

[0088] In one embodiment, the fire truck also includes a belt-retracting mechanism, which includes a joint detection device. The method also includes: determining a first number and a second number of joints detected by the joint detection device within the recovery operation time and the release operation time; determining the difference between the first number and the second number as the actual number of joints that the water hose has recovered at the target time point; determining a first recovery length of the water hose at the target time point based on the actual number of joints and the preset length of the water hose; determining a second recovery length of the water hose at the target time point based on the second number; and determining the sum of the first recovery length and the second recovery length as the actual recovery length of the water hose at the target time point.

[0089] In one embodiment, determining the first number and second number of joints detected by the joint detection device within the recycling operation time and the tape unwinding operation time includes: determining the time point when the joint reaches the center point of the detection area of ​​the joint detection device as the effective detection time point of the joint detection device; determining the first number and the second number as the number of first effective detection time points within the recycling operation time and the number of second effective detection time points within the tape unwinding operation time, respectively.

[0090] In one embodiment, determining the second recovery length of the water hose at a target time point based on the second quantity includes: when the second number is greater than a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the first time length between the effective detection time point of the joint detected for the last time within the unwinding operation time and the target time point; determining the first unwinding length of the water hose based on the first time length and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the first unwinding length and the preset length of the water hose as the second recovery length of the water hose at the target time point.

[0091] In one embodiment, determining the second recovery length of the water hose at the target time point based on the second quantity includes: when the second number is equal to a preset value, determining the effective detection time point of the joint detected by the joint detection device for the last time within the unwinding operation time; determining the second time period between the effective detection time point of the joint detected for the last time within the unwinding operation time and the stop time point of the recovery operation; determining the reeled-in length of the water hose within the second time period based on the second time period and the reeling current of the reeling solenoid valve in each cycle; determining the third time period between the start time point of the unwinding operation and the target time point; determining the second unwinding length of the water hose within the third time period based on the third time period and the unwinding current of the unwinding solenoid valve in each cycle; and determining the length difference between the reeled-in length and the second unwinding length as the second recovery length of the water hose at the target time point.

[0092] The present application also provides a computer program product, which, when executed on a data processing device, is adapted to execute a program that initiates the steps of the method for determining the hose recovery length.

[0093] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0094] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0095] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0096] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0097] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0098] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0099] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0100] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0101] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for determining the length of a hose recovery, characterized in that: The method is applied to a fire truck, which includes a plurality of water hoses connected by joints, a hose-releasing solenoid valve, and a hose-retracting solenoid valve. The method includes: During the process of recycling multiple hoses, periodically obtaining the belt-receiving current of the belt-receiving solenoid valve; Determine the retraction speed corresponding to the retraction current in each cycle to determine the retraction length of the water hose in each cycle; Determining the recovery operation duration of the water hose at a target time point according to the recovery current; Determine the length of the first hose that has been recovered at the target time point based on the recovery operation duration and the recovered length of the hose in each cycle; Determining the first hose length as the actual recovered length of the hose at the target time point; When starting a belt-releasing operation for a plurality of water hoses, periodically obtaining a belt-releasing current of the belt-releasing solenoid valve; Determining a tape payout speed corresponding to the tape payout current in each cycle to determine a tape payout length of the water hose in each cycle; Determining the unwinding operation duration of the water hose at the target time point according to the unwinding current; Determine the length of the second hose that has been unwound at the target time point based on the unwinding operation duration and the unwound length of the hose in each cycle; The actual recovery length of the water hose at the target time point is determined based on the first water hose length and the second water hose length.

2. The method for determining the hose recovery length according to claim 1, characterized in that: The method further comprises: When the output current of the tape-receiving solenoid valve or the tape-releasing solenoid valve is zero, determining that the fire truck stops the retrieving operation or stops the tape-releasing operation; When the output current of the tape-retrieving solenoid valve or the tape-releasing solenoid valve is greater than zero, determining that the fire truck performs the retrieving operation or the tape-releasing operation; Determine the time duration during which the output current of the belt retracting solenoid valve is greater than zero as the retracting operation time duration of the water hose retracting operation; The time duration during which the output current of the unwinding solenoid valve is greater than zero is determined as the unwinding operation time duration during which the water hose performs the unwinding operation.

3. The method for determining the hose recovery length according to claim 1, characterized in that: The fire truck further includes a belt taking-up mechanism, the belt taking-up mechanism including a joint detection device, and the method further includes: Determining a first quantity and a second quantity of joints detected by the joint detection device within the duration of the retrieving operation and the duration of the unwinding operation; determining the difference between the first number and the second number as the actual number of joints of the hose that have been recovered at the target time point; Determining a first recovery length of the hose at the target time point according to the actual number of joints and the preset length of the hose; determining a second recovery length of the hose at the target time point according to the second quantity; The sum of the first recovery length and the second recovery length is determined as the actual recovery length of the hose at the target time point.

4. The method for determining the hose recovery length according to claim 3, characterized in that: Determining the first number and the second number of joints detected by the joint detection device within the recovery operation duration and the unwinding operation duration includes: Determining the time point when the joint reaches the center point of the detection area of ​​the joint detection device as the effective detection time point of the joint detection device; The first number and the second number are respectively determined to be the number of first valid detection time points within the recovery operation duration and the number of second valid detection time points within the tape placement operation duration.

5. The method for determining the hose recovery length according to claim 3, characterized in that: Determining a second recovery length of the hose at the target time point according to the second quantity includes: When the second number is greater than a preset value, determining the effective detection time point of the joint detected last time by the joint detection device within the duration of the tape unwinding operation; Determine a first duration between the effective detection time point of the last detected joint within the duration of the tape unwinding operation and the target time point; Determine a first unwinding length of the water hose according to the first time length and the unwinding current of the unwinding solenoid valve in each cycle; The length difference between the first unwinding length and the preset length of the hose is determined as the second recovery length of the hose at the target time point.

6. The method for determining the hose recovery length according to claim 3, characterized in that: Determining a second recovery length of the hose at the target time point according to the second quantity includes: When the second number is equal to a preset value, determining the effective detection time point of the joint detected last time by the joint detection device within the duration of the tape unwinding operation; Determining a second duration between the effective detection time point of the last detected joint within the duration of the tape unwinding operation and the stop time point of the recycling operation; determining a retracted length of the hose within the second time period according to the second time period and a retracting current of the retracting solenoid valve in each cycle; Determining a third duration between the start time point of the tape placement operation and the target time point; Determine a second unwinding length of the water hose within the third time period according to the third time period and the unwinding current of the unwinding solenoid valve in each cycle; The difference between the reeled-in length and the second unreeled length is determined as the second recovered length of the hose at the target time point.

7. A machine-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by a processor, the processor is configured to perform the method for determining the hose recovery length according to any one of claims 1 to 6.

8. A processor, characterized in that: The method is configured to perform the method for determining the hose recovery length according to any one of claims 1 to 6.

9. A device for determining the length of a hose recovery, characterized in that: The apparatus comprises: a processor according to claim 8.

10. A fire truck, characterized in that: The fire truck comprises: Multiple hoses connected by joints; a take-up solenoid valve, configured to output a take-up current to perform a retrieving operation; and The device for determining the hose recovery length according to claim 9.

11. The fire truck according to claim 10, characterized in that: The fire truck also includes: The unwinding solenoid valve is used to output unwinding current to perform unwinding operation.

12. The fire truck according to claim 10, characterized in that: The fire truck also includes: The belt taking-up mechanism includes a joint detection device for detecting the joint of the water hose.

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