Failure prediction circuit, method, and storage medium

Abstract

The application provides a fault prediction circuit, a method and a storage medium, relates to the field of electromechanical control, and the fault prediction circuit is applied to a hydraulic coupling including an input shaft and an output shaft; the circuit comprises a presetting module, a counting module and a feedback module; the counting module is connected to the presetting module and the feedback module; the presetting module is used for setting a preset speed difference; the counting module is used for counting the input shaft and the output shaft based on the preset speed difference to obtain a counting result; and the feedback module is used for controlling the counting module according to the counting result and performing fault prediction. The fault prediction circuit provided by the embodiment of the application is applied to the fault prediction of the hydraulic coupling, the fault of the hydraulic coupling can be predicted in advance, and the probability of damage and accident expansion of the hydraulic coupling can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromechanical control, in particular, to a fault prediction circuit, method and storage medium. BACKGROUND

[0002] The hydraulic coupling is a kind of hydraulic transmission device using kinetic energy of liquid to transmit energy, which uses liquid oil as working medium, and converts mechanical energy and kinetic energy of liquid into each other through pump wheel and turbine, so as to connect prime mover and working machine to realize power transmission.

[0003] At present, the fault prediction of the hydraulic coupling mainly depends on the measurement of the temperature of the hydraulic coupling, compares the measured temperature with the set threshold value, and alarms when the measured temperature is greater than the threshold value, so as to realize the fault alarm of the hydraulic coupling. However, the temperature measurement method cannot accurately measure the temperature value of the hydraulic coupling, and cannot realize the prediction of the fault of the hydraulic coupling. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a fault prediction circuit, method and storage medium, which judges whether the hydraulic coupling has a fault based on the speed difference of the input shaft and the output shaft of the hydraulic coupling; the counting module starts counting the input shaft and the output shaft of the hydraulic coupling, and obtains the counting result; finally, the feedback module controls the working of the counting module according to the counting result of the counting module. The fault prediction circuit can detect the occurrence of the fault at the beginning of the fault of the hydraulic coupling, and ensures the safety of the equipment operation.

[0005] In the first aspect, the embodiment of the present application provides a fault prediction circuit, which is applied to a hydraulic coupling including an input shaft and an output shaft; the circuit includes a preset module, a counting module and a feedback module; the counting module is connected with the preset module and the feedback module; the preset module is used for setting a preset speed difference; the counting module is used for counting the speed of the input shaft and the output shaft based on the preset speed difference, to obtain a counting result; and the feedback module is used for controlling the counting module according to the counting result, and performing fault prediction.

[0006] In the implementation process, the fault prediction circuit provided by the embodiment of the present application judges whether the hydrodynamic coupling has a fault based on the speed difference between the input shaft and the output shaft of the hydrodynamic coupling; the preset module sets the corresponding threshold speed difference before the circuit starts to work; further, the counting module starts to count the input shaft and the output shaft of the hydrodynamic coupling and obtains a counting result; finally, the feedback module controls the working of the counting module according to the counting result of the counting module. Therefore, the fault prediction circuit provided by the embodiment of the present application can be used for fault prediction of the hydrodynamic coupling, can detect the occurrence of the fault at the initial stage of the fault of the hydrodynamic coupling, and can effectively reduce the probability of damage and accident expansion of the hydrodynamic coupling.

[0007] Optionally, in the embodiment of the present application, the counting module further comprises a speed sensor and a counter; the speed sensor is connected to the counter and is used to convert the speeds of the input shaft and the output shaft of the hydrodynamic coupling into pulse signals; and the counter is connected to the feedback module and is used to obtain the counting result according to the pulse signals.

[0008] In the implementation process, the counting module of the fault prediction circuit provided by the embodiment of the present application is provided with a speed sensor and a counter; during the working of the fault prediction circuit, the speed sensor converts the speed signals of the input shaft and the output shaft into pulse signals and outputs the pulse signals to the counter; so that the counter realizes accurate counting of the speeds based on the pulse signals, which is beneficial to obtaining accurate counting results.

[0009] Optionally, in the embodiment of the present application, the counting result comprises an input shaft counting result and an output shaft counting result; the counter comprises an input shaft counter and an output shaft counter; the input shaft counter and the output shaft counter are respectively connected to the feedback module; the input shaft counter is used to count the input shaft speed of the input shaft according to the input shaft speed, so as to obtain the input shaft counting result; the output shaft counter is used to count the output shaft speed of the output shaft according to the output shaft speed, so as to obtain the output shaft counting result; and the preset module is connected to one of the input shaft counter and the output shaft counter and provides a preset speed difference for the input shaft speed or the output shaft speed.

[0010] In the implementation process, the fault prediction circuit provided by the embodiment of the present application is provided with an input shaft counter and an output shaft counter, the input shaft counter and the output shaft counter can respectively realize counting of the input shaft speed and the output shaft speed based on the pulse signals of the speed sensor; and the subsequent feedback module can realize accurate prediction of the fault based on the input shaft counting result and the output shaft counting result.

[0011] Optionally, in the embodiment of the present application, the preset module is connected with the output shaft counter; the feedback module comprises an output shaft signal control sub-module; the output shaft signal control sub-module is connected with the output shaft counter and the input shaft counter, and is configured to control the input shaft counter to restart counting according to the output shaft counting result in the case that the output shaft counter overflows first.

[0012] In the implementation process, in the case that the output shaft counter overflows first, the output shaft signal control sub-module is configured to convert the high level into the low level through the inverter, and then control the input shaft counter to restart counting. The connection design of the output shaft counter and the input shaft counter can realize the control of the input shaft counter by the overflow of the output shaft. Therefore, the fault detection circuit provided by the embodiment of the present application has a simple structure and can effectively predict the fault of the hydraulic coupler.

[0013] Optionally, in the embodiment of the present application, the feedback module further comprises an input shaft signal control sub-module; the input shaft signal control sub-module is connected with the input end of the input shaft counter, the output end of the input counter and the output end of the output counter, and is configured to control the input shaft counter and the output shaft counter to stop counting according to the input shaft counting result in the case that the input shaft counter overflows first.

[0014] In the implementation process, the input shaft signal control sub-module is arranged in the fault prediction circuit, which can control the working state of the input shaft counter and the output shaft counter, so as to reflect whether the hydraulic coupler has a fault. For example, the preset module is connected with the output shaft counter. The output shaft counter counts on the basis of the preset speed difference, so that the output shaft counter should overflow first in the case that there is no fault. After the output shaft counter overflows, the input shaft counter restarts counting, that is, the input shaft counter should not overflow in the normal case. On the contrary, the input shaft counter overflows first, which indicates that the speed difference between the output shaft and the input shaft is large, and the hydraulic coupler has a fault.

[0015] Optionally, in the embodiment of the present application, the feedback module further comprises a pre-warning sub-module; the pre-warning sub-module is connected with the output end of the output shaft counter, and is configured to send a pre-warning signal in the case that the input shaft counter overflows first.

[0016] In the implementation process, the feedback module further includes a pre-warning submodule, the pre-warning submodule is connected to the output end of the input shaft counter and the input end of the inverter, that is, the pre-warning signal output terminal represents the input shaft counting result of the input shaft counter, and a corresponding pre-warning signal is sent according to the counting result, thereby realizing the fault prediction of the hydraulic coupler, sending prompt information in time, and effectively reducing the damage and accident expansion of the hydraulic coupler.

[0017] Optionally, in the embodiment of the application, the preset module includes a power supply, a switch and a protection resistor; the power supply is connected to the protection resistor through the switch, and the protection resistor is connected to the switch and the ground; the switch is connected to the counting module and is used for providing a high level for the counting module when the switch is closed and providing a low level for the counting module when the switch is opened.

[0018] In the implementation process, the preset module in the fault prediction circuit provided by the embodiment of the application sets a preset speed difference for the output shaft counter, thereby ensuring the smooth operation of the fault prediction circuit provided by the embodiment of the application.

[0019] In a second aspect, the embodiment of the application provides a fault prediction method, which is applied to a fault prediction circuit for predicting a hydraulic coupler including an input shaft and an output shaft; the prediction circuit includes a preset module, a counting module and a feedback module; the fault prediction method includes: setting, by the preset module, a preset speed difference; counting, by the counting module, the speeds of the input shaft and the output shaft based on the preset speed difference to obtain a counting result; and controlling, by the feedback module, the counting module according to the counting result and performing fault prediction.

[0020] In the implementation process, the fault prediction method provided by the second aspect of the application starts from the speed difference between the output shaft and the input shaft, measures the counting result through the counting module, controls the operation of the counting module according to the counting result, thereby realizing the prediction of the fault and making relevant feedback, which is conducive to timely prediction of the fault.

[0021] Optionally, in the embodiment of the application, the control of the counting module according to the counting result and the fault prediction include: if the counting of the input shaft overflows before the counting of the output shaft, it is determined that the hydraulic coupler has a fault.

[0022] In the implementation process, the embodiment of the application judges whether the hydraulic coupler has a fault through the output shaft counter and the overflow of the output shaft counter; specifically, the input shaft counter overflows before the output shaft counter, which indicates that the hydraulic coupler has a fault; the output shaft counter overflows before the input shaft counter, which indicates that the hydraulic coupler does not have a fault. Thus, the prediction of the fault of the hydraulic coupler is realized, and the safety of the equipment operation is ensured.

[0023] In a third aspect, an electronic device is provided, and the electronic device includes a memory and a processor. The memory stores program instructions. When the processor reads and executes the program instructions, the steps in the implementation manners of the second aspect are performed.

[0024] In a fourth aspect, a computer readable storage medium is provided, and the readable storage medium stores computer program instructions. When a processor reads and executes the computer program instructions, the steps in the implementation manners of the second aspect are performed. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 The first schematic diagram of the module of the fault prediction circuit provided by the embodiments of the present application;

[0027] Figure 2 The second schematic diagram of the module of the fault prediction circuit provided by the embodiments of the present application;

[0028] Figure 3 The circuit connection example diagram provided by the embodiments of the present application;

[0029] Figure 4 The circuit structure example diagram of the preset module provided by the embodiments of the present application;

[0030] Figure 5 The flowchart of the fault prediction method provided by the embodiments of the present application;

[0031] Figure 6 The structural schematic diagram of the electronic device provided by the embodiments of the present application.

[0032] Icon: fault prediction circuit-100; preset module-120; counting module-130; rotating speed sensor-131; counter-132; input shaft counter-1321; output shaft counter-1322; feedback module-140; output shaft signal control sub-module-141; input shaft signal control sub-module-142; early warning sub-module-143. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. For example, the flowcharts and block diagrams in the drawings show the possible implementation architecture, functions and operations of the systems, methods and computer program products according to the embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing the specified logic function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders from those noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can also be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions. In addition, the functional modules in the various embodiments of the present application can be integrated together to form a separate part, or each module can exist independently, or two or more modules can be integrated to form a separate part.

[0034] The hydraulic coupling is a kind of hydraulic transmission device connected with a transmission device motor, and energy is transmitted by using kinetic energy of liquid, which is widely used in medium and large-sized equipment. At present, the fault prediction of the hydraulic coupling mainly depends on the measurement of the temperature of the hydraulic coupling, and the measured temperature is compared with the set threshold value, and when the measured temperature is greater than the threshold value, an alarm is given to realize the fault alarm of the hydraulic coupling.

[0035] The applicant found in the research process that the fault prediction of the hydraulic coupling by predicting the temperature has the following problems:

[0036] Since the hydraulic coupling rotates with the motor and the load shaft during operation, the temperature of the hydraulic coupling is measured by a non-contact method, the operating environment of the hydraulic coupling is harsh, and the hydraulic coupling body is contaminated, which results in inaccurate temperature measurement value, and is easy to cause fault misjudgment or cannot alarm in time, causing the accident to expand.

[0037] The temperature rise of the hydraulic coupling occurs only when the hydraulic coupling has existing problems, and when the temperature or temperature rise is greater than the threshold value, the hydraulic coupling may have failed, and the fault alarm only prevents the expansion of the hydraulic coupling failure, and cannot realize the prediction of the hydraulic coupling failure.

[0038] Based on this, the scheme provides a fault prediction circuit, which analyzes the working state of the hydraulic coupler through the speed difference of the input shaft and the output shaft of the hydraulic coupler; in the case of insufficient oil, oil deterioration, overload and other problems of the hydraulic coupler, the first thing that appears is that the speed difference between the output shaft and the input shaft of the hydraulic coupler becomes larger, and after the speed difference becomes larger for a certain period of time, the temperature of the hydraulic coupler becomes high.

[0039] Therefore, the fault prediction circuit provided by the present application can realize early warning based on the speed difference between the output shaft and the input shaft in the case of problems of the hydraulic coupler, effectively protecting the hydraulic coupler and the equipment. Since the fault prediction circuit provided by the present application can realize the function of early warning, in actual operation, if early warning occurs, the hydraulic coupler can continue to operate for a period of time according to actual needs, leaving time for starting the standby equipment, thereby ensuring that the working efficiency of the equipment is not affected and improving the production efficiency.

[0040] Please refer to Figure 1 , Figure 1 The first schematic diagram of the fault prediction circuit provided by the embodiment of the present application; the fault prediction circuit 100 is applied to a hydraulic coupler including an input shaft and an output shaft.

[0041] The fault prediction circuit 100 includes a preset module 120, a counting module 130 and a feedback module 140.

[0042] The counting module 130 is connected to the preset module 120 and the feedback module 140.

[0043] The preset module 120 is used to set a preset speed difference; the counting module 130 is used to count the speeds of the input shaft and the output shaft based on the preset speed difference to obtain a counting result; and the feedback module 140 is used to control the counting module 130 according to the counting result and perform fault prediction.

[0044] Since in the case of insufficient oil, oil deterioration, overload and other problems of the hydraulic coupler, the first thing that appears is that the speed difference between the output shaft and the input shaft of the hydraulic coupler becomes larger; therefore, the fault prediction circuit 100 provided by the embodiment of the present application starts from the speed difference between the output shaft and the input shaft, and obtains a counting result by the counting module 130; it should be noted that the counting result in the above process can be understood as a parameter related to the speed difference.

[0045] The feedback module 140 judges whether the hydraulic coupler has a fault based on the counting result obtained by the counting module 130, and controls the counting module 130 according to the counting result; for example, the feedback module 140 controls the counting module 130 to continue counting when the hydraulic coupler has no fault, or the feedback module 140 controls the counting module 130 to stop working when the hydraulic coupler has a fault.

[0046] In some embodiments, the feedback module 140 can send a pre-warning signal when controlling the counting module 130 to stop working, so as to realize pre-warning.

[0047] It should be noted that the preset module 120 is set because the output speed of the hydraulic coupler is slightly less than the input speed when the hydraulic coupler is running; therefore, the fault prediction circuit 100 can set a preset speed difference for the output shaft speed or the output shaft speed through the preset module 120 before counting, and the preset speed difference is related to the speed difference between the input shaft and the output shaft. For example, if the preset speed difference is set for the input shaft, the preset speed difference should be set to a negative number; if the preset speed difference is set for the output shaft, the preset speed difference should be set to a positive number.

[0048] Through Figure 1 It can be seen that the fault prediction circuit 100 provided by the embodiment of the present application judges whether the hydraulic coupler has a fault based on the speed difference between the input shaft and the output shaft of the hydraulic coupler; the preset module 120 sets the corresponding threshold speed difference before the circuit starts working; further, the counting module 130 starts counting the input shaft and the output shaft of the hydraulic coupler and obtains a counting result; finally, the feedback module 140 controls the working of the counting module 130 according to the counting result of the counting module 130. Therefore, the fault prediction circuit 100 provided by the embodiment of the present application can be used for fault prediction of the hydraulic coupler, which can effectively avoid damage and accident expansion of the hydraulic coupler when the fault of the hydraulic coupler is initially detected.

[0049] Please refer to Figure 2 , Figure 2 The second schematic diagram of the modules of the fault prediction circuit provided by the embodiment of the present application; in the optional implementation manner of the embodiment of the present application, the counting module 130 further includes a speed sensor 131 and a counter 132.

[0050] The speed sensor 131 is connected to the counter 132 and is used to convert the speed of the input shaft and the output shaft of the hydraulic coupler into a pulse signal.

[0051] The rotating speed sensor 131 is a sensor that converts the rotating speed of a rotating object into an electric quantity output. The rotating speed sensor 131 belongs to an indirect measuring device and can be manufactured by mechanical, electrical, magnetic, optical and hybrid methods. According to different signal forms, the rotating speed sensor 131 can be divided into two types of analog and digital. Common rotating speed sensors 131 include a projection type photoelectric rotating speed sensor 131, a reflection type photoelectric rotating speed sensor 131, a variable magnetic resistance type rotating speed sensor 131, a capacitive type rotating speed sensor 131 and a Hall rotating speed sensor 131. In the embodiment of the application, the rotating speed sensor 131 converts the measured rotating speed signal into a pulse signal and outputs to the counter 132.

[0052] The counter 132 is connected to the feedback module 140 and is configured to obtain a counting result according to the pulse signal.

[0053] Through Figure 2 It can be known that the counting module 130 of the fault prediction circuit 100 provided in the embodiment of the application is provided with the rotating speed sensor 131 and the counter 132. In the working process of the fault prediction circuit 100, the rotating speed sensor 131 converts the rotating speed signals of the input shaft and the output shaft into pulse signals and outputs to the counter 132. Thus, the counter 132 realizes accurate counting of the rotating speed based on the pulse signal, which is beneficial to obtaining an accurate counting result.

[0054] Please continue to refer to Figure 2 In the optional implementation of the embodiment of the application, the counting result includes an input shaft counting result and an output shaft counting result. The counter 132 includes an input shaft counter 1321 and an output shaft counter 1322.

[0055] The input shaft counter 1321 and the output shaft counter 1322 are respectively connected to the feedback module 140.

[0056] The input shaft counter 1321 is configured to count the input rotating speed according to the input shaft rotating speed of the input shaft to obtain the input shaft counting result. The output shaft counter 1322 is configured to count the output shaft rotating speed according to the output shaft rotating speed of the output shaft to obtain the output shaft counting result.

[0057] The counter 132 in the counting module 130 provided in the embodiment of the application includes the input shaft counter 1321 and the output shaft counter 1322. Correspondingly, the input shaft counter 1321 and the output shaft counter 1322 are respectively connected to the rotating speed sensor 131. The independent rotating speed sensor 131 respectively realizes rotating speed detection of the input shaft and the output and converts the rotating speed into a pulse signal, which is respectively output to the input shaft counter 1321 and the output shaft counter 1322, and then respectively realizes rotating speed calculation of the input shaft and the output shaft.

[0058] The preset module 120 is connected with one of the input shaft counter 1321 and the output shaft counter 1322, and provides a preset speed difference for the input shaft speed or the output shaft speed.

[0059] For example, when the preset module 120 is connected with the input shaft counter 1321, the preset speed difference for the input shaft should be set as a negative number; when the preset module 120 is connected with the output shaft counter 1322, the preset speed difference for the output shaft should be set as a positive number.

[0060] It is worth noting that the counter 132, the input shaft counter 1321 and the output shaft counter 1322 in the embodiments of the present application can be an integrated synchronous counter 132, such as a four-bit synchronous binary counter 132, a synchronous decimal counter 132, a four-bit synchronous binary reversible counter 132, a synchronous decimal reversible counter 132, etc. In actual application, the type of the counter 132 cannot limit the protection scope of the counter 132, the input shaft counter 1321 and the output shaft counter 1322 in the embodiments of the present application, as long as the speed of the input shaft and the output shaft can be counted. For example, it can be a four-bit synchronous binary counter 74161, a four-bit synchronous binary counter 74163, a synchronous decimal counter 74160, etc. Those skilled in the art can carry out corresponding cascades according to different types of counters 132 to realize the functions of the fault prediction circuit 100 provided in the embodiments of the present application.

[0061] Therefore, the fault prediction circuit 100 provided in the embodiments of the present application is provided with the input shaft counter 1321 and the output shaft counter 1322, which can count the speeds of the input shaft and the output shaft based on the pulse signals of the speed sensor 131 respectively, so that the subsequent feedback module 140 can accurately predict the fault based on the counting results of the input shaft and the output shaft.

[0062] Please refer to Figure 3 , Figure 3 for an example of the circuit connection provided in the embodiments of the present application. In the optional implementation of the embodiments of the present application, the counter 132 is cascaded by three 74161 counters 132, and the preset module 120 is connected with the output shaft counter 1322, to illustrate the fault detection circuit provided in the embodiments of the present application.

[0063] In Figure 3 , the preset module 120 is connected with the output shaft counter 1322.

[0064] The feedback module 140 includes an output shaft signal control sub-module 141.

[0065] The output shaft signal control sub-module 141 is connected with the output shaft counter 1322 and the input shaft counter 1321, and is used to control the input shaft counter 1321 to restart counting according to the output shaft counting result in the case that the output shaft counter 1322 overflows first.

[0066] For example, referring to Figure 3 In the case that Figure 3 The output shaft signal control sub-module 141 can be an inverter 7404, and the output end of the output shaft counter 1322 is connected with the inverter. In the case that the output shaft counter 1322 overflows first, the high level is converted to low level by the inverter, and the output end of the inverter is connected with the The input shaft counter 1321 is set to zero, and the input shaft counter 1321 is controlled to restart counting.

[0067] Those skilled in the art can understand that, when the output shaft counter 1322 counts on the basis of the preset rotating speed difference, the output shaft counter 1322 should overflow first in the case that there is no fault, and the input shaft counter 1321 is further controlled to restart counting according to the circuit structure described above after the output shaft counter 1322 overflows. That is to say, in the case that the hydraulic coupler works normally, the input shaft counter 1321 should not overflow.

[0068] By Figure 3 It can be known that, by the setting of the output shaft signal control sub-module, in the case that the output shaft counter 1322 overflows first, the high level is converted to low level by the inverter, and the input shaft counter 1321 is controlled to restart counting. The counting of the input shaft counter 1321 can be controlled by the overflow of the output shaft counter 1322 through the connection design of the output shaft counter 1322 and the input shaft counter 1321. It can be known that the structure of the fault detection circuit provided in the embodiment is simple, and the effective prediction of the fault of the hydraulic coupler can be realized.

[0069] For example, referring to Figure 3 In the optional implementation of the embodiment, the feedback module 140 further includes an input shaft signal control sub-module 142.

[0070] The input shaft signal control sub-module 142 is connected with the input end of the input shaft counter 1321, the output end of the input counter 132 and the output end of the output counter 132, and is used to control the output shaft counter 1322 and the input shaft counter 1321 to stop counting according to the input shaft counting result in the case that the input shaft counter 1321 overflows first.

[0071] It can be understood that the input shaft counter overflows before the output shaft counter, which represents that the speed difference between the input shaft and the output shaft becomes large; therefore, the case that the input shaft counter 1321 overflows before the output shaft counter 1322 represents that the hydraulic coupling is malfunctioning.

[0072] In some embodiments, the input shaft signal control submodule can be an inverter 7404 connected to the input end and the output end of the input shaft counter 1321; in the case that the input shaft counter 1321 overflows before the output shaft counter 1322, the high level is converted to a low level through the inverter 7404; and the low level signal controls the counter 132 to stop working. Figure 3 In some embodiments, the input shaft signal control submodule can be an inverter 7404 connected to the input end and the output end of the input shaft counter 1321; in the case that the input shaft counter 1321 overflows before the output shaft counter 1322, the high level is converted to a low level through the inverter 7404; and the low level signal controls the counter 132 to stop working.

[0073] In an alternative embodiment, an AND gate 7408 is arranged between the output shaft signal control submodule 141 and the output counter 132 and between the input shaft signal control submodule 142 and the input counter 132; in the case that the input shaft counter 1321 overflows before the output shaft counter 1322, the high level is converted to a low level through the inverter 7404; and the low level is output to the AND gate 7408 arranged between the output shaft signal control submodule 141 and the output counter 132 and between the input shaft signal control submodule 142 and the input counter 132, so as to realize the control of the input shaft counter 1321 and the output shaft counter 1322 to stop working by the input shaft counting result of the input shaft counter 1321.

[0074] It can be seen that the input shaft signal control submodule 142 is arranged in the fault prediction circuit 100 provided by the embodiments of the present application, and the input shaft signal control submodule 142 can realize the control of the working state of the input shaft counter 1321 and the output shaft counter 1322, so as to reflect whether the hydraulic coupling is malfunctioning.

[0075] In an alternative embodiment, the feedback module 140 further comprises a pre-warning submodule 143.

[0076] The pre-warning submodule 143 is connected to the output end of the output shaft counter 1322 and is used to output a pre-warning signal in the case that the input shaft counter 1321 overflows before the output shaft counter 1322; for details, refer to the pre-warning signal output terminal in Figure 3

[0077] In some embodiments, the pre-warning signal output terminal can be connected to an alarm device, such as a buzzer, a light alarm, etc.

[0078] ​Therefore, the feedback module 140 in this embodiment also includes an early warning submodule 143. The early warning submodule 143 is connected to the output terminal of the input shaft counter 1321 and the input terminal of the inverter 7404. That is, the early warning signal output terminal represents the input shaft counting result of the input shaft counter 1321. Based on the counting result, a corresponding early warning signal is issued, which realizes the prediction of the hydraulic coupler fault and issues timely prompt information, which can reduce the damage to the hydraulic coupler and the expansion of the accident in a timely manner.

[0079] Please refer to Figure 4 , Figure 4 The circuit structure example diagram of the preset module provided in the embodiment of this application is shown; in an optional embodiment of this application, the preset module includes a power supply, a switch and a protection resistor.

[0080] like Figure 4 As shown, the power supply is connected to the protection resistor via a switch, and the protection resistor is connected to the switch and ground.

[0081] The switch connects to the counting module 130 and is used to provide a high level to the counting module 130 when the switch is closed and a low level to the counting module 130 when the switch is open.

[0082] Those skilled in the art will understand that, as an optional approach, the D0, D1, D2, and D3 terminals of the preset module 120 are connected to the D0, D1, D2, and D3 terminals of the output shaft counter 1322; through the connection of the switch control circuit, corresponding high and low levels are output to the D0, D1, D2, and D3 terminals of the output shaft counter 1322, thereby achieving the preset speed difference of the output shaft counter 1322. It should be noted that there are various methods for setting a preset number for the counter 132, and the preset number module provided in the above process is merely exemplary and should not be construed as limiting the protection scope of the fault prediction circuit 100 of this application.

[0083] pass Figure 4 As can be seen, the preset module 120 in the fault prediction circuit 100 provided in this application embodiment sets a preset speed difference for the output shaft counter 1322, thereby ensuring the smooth operation of the fault prediction circuit 100 provided in this application embodiment.

[0084] Please refer to Figure 5 , Figure 5 A flowchart of a fault prediction method provided in an embodiment of this application; the fault prediction method is applied to a fault prediction circuit for a hydraulic coupler including an input shaft and an output shaft; the prediction circuit includes a preset module, a counting module, and a feedback module.

[0085] In this embodiment of the application, the fault prediction method includes the following steps:

[0086] Step S100: setting a preset speed difference by a preset module.

[0087] In the step S100, the preset module is set because the output speed of the fluid coupling is slightly less than the input speed when the fluid coupling is running; therefore, the preset module is set to ensure the normal operation of the circuit. It should be noted that the preset speed difference is related to the speed difference between the input shaft and the output shaft.

[0088] Step S102: counting the speed of the input shaft and the output shaft based on the preset speed difference by a counting module to obtain a counting result.

[0089] In the step S102, the counting module is used to count the speed of the input shaft and the output shaft based on the preset speed difference to obtain a counting result, because the output shaft and the input shaft of the fluid coupling have a large speed difference in the case of insufficient oil, oil deterioration, overload and other problems.

[0090] Step S103: controlling the counting module according to the counting result by a feedback module and predicting the fault.

[0091] In the step S103, the feedback module judges whether the fluid coupling has a fault based on the counting result obtained by the counting module, and the feedback module controls the counting module according to the counting result; for example, the feedback module controls the counting module to continue counting when the fluid coupling has no fault, or the feedback module controls the counting module to stop working when the fluid coupling has a fault.

[0092] Through the above steps, the counting module is controlled according to the counting result, and the fault is predicted. Figure 5 It can be seen that the fault prediction method provided by the second aspect of the present application starts from the speed difference between the output shaft and the input shaft, measures the counting result by the counting module, controls the working of the counting module according to the counting result, thereby realizing the prediction of the fault and making relevant feedback, which is beneficial to timely predicting the fault.

[0093] In an optional embodiment, the counting module is controlled according to the counting result, and the fault is predicted, including: if the counting of the input shaft is overflowed before the counting of the output shaft, it is determined that the fluid coupling has a fault.

[0094] It should be noted that, since the output rotation speed of the fluid coupling is slightly less than the input rotation speed during operation, if the counter is cascaded by three 74161 counters, and the preset module is connected to the output shaft counter, the output shaft counter counts on the basis of the preset rotation speed difference, so that the output shaft counter should overflow before the input shaft counter in the case of no fault; after the output shaft counter overflows, the input shaft counter starts counting again, that is, the input shaft counter should not overflow in the normal case. On the contrary, if the input shaft counter overflows before the output shaft counter, it indicates that the rotation speed difference between the output shaft and the input shaft is large, and the fluid coupling is faulty.

[0095] Therefore, it can be known that the embodiment of the application determines whether the fluid coupling is faulty by the overflow of the output shaft counter and the input shaft counter; specifically, if the input shaft counter overflows before the output shaft counter, it indicates that the fluid coupling is faulty; if the output shaft counter overflows before the input shaft counter, it indicates that the fluid coupling is not faulty. Thus, the prediction of the fault of the fluid coupling is realized, and the safety of the equipment operation is ensured.

[0096] Please refer to Figure 6 , Figure 6 The structure schematic diagram of the electronic device provided by the embodiment of the application is shown. The electronic device 300 provided by the embodiment of the application comprises a processor 301 and a memory 302, the memory 302 stores machine readable instructions executable by the processor 301, and the machine readable instructions are executed by the processor 301 to perform the method as above.

[0097] Based on the same inventive concept, the embodiment of the application further provides a computer readable storage medium, the computer readable storage medium stores computer program instructions, and the computer program instructions are read and run by a processor to perform the steps in any of the implementation manners.

[0098] The computer readable storage medium can be a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) and the like various media that can store program codes. Among them, the storage medium is used to store programs, and the processor executes the programs after receiving execution instructions. The method executed by the electronic terminal defined by the process disclosed in any of the embodiments of the present application can be applied to the processor or implemented by the processor.

[0099] In the embodiments provided by the present application, it should be understood that the disclosed device and method can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There can be another division during actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0100] In addition, the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, some or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0101] Furthermore, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0102] Alternatively, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.

[0103] The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in or transmitted from a computer readable storage medium, such as a website site, a computer, a server or a data center, to another computer readable storage medium via a wired (e.g., coaxial cable, fiber optics, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0104] In this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0105] The embodiments of the present application described above are merely used to illustrate the present application and not to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A failure prediction circuit, characterized by, The fault prediction circuit is applied to a hydraulic coupling comprising an input shaft and an output shaft; the circuit comprises a presetting module, a counting module and a feedback module; wherein the counting module comprises a counter, the counter comprising an input shaft counter and an output shaft counter; the feedback module comprises an input shaft signal control submodule; The counting module is connected to the presetting module and the feedback module; The presetting module is used for setting a preset speed difference; The counting module is used for counting the speeds of the input shaft and the output shaft based on the preset speed difference to obtain a counting result; wherein the counting result comprises an input shaft counting result and an output shaft counting result; The feedback module is used for controlling the counting module according to the counting result and performing fault prediction; The input shaft signal control submodule is connected to an input end of the input shaft counter, an output end of the input shaft counter and an output end of the output shaft counter, and is used for controlling the input shaft counter and the output shaft counter to stop counting according to the input shaft counting result in the case that the input shaft counter overflows prior to the output shaft counter. The case that the input shaft counter overflows prior to the output shaft counter represents that the coupling has a fault.

2. The prediction circuit of claim 1, wherein, The counting module further comprises a speed sensor; The speed sensor is connected to the counter and is used for converting the speeds of the input shaft and the output shaft of the hydraulic coupling into pulse signals; The counter is connected to the feedback module and is used for obtaining the counting result according to the pulse signals.

3. The prediction circuit according to claim 2, wherein The input shaft counter and the output shaft counter are respectively connected to the feedback module; The input shaft counter is used for counting the input shaft speed of the input shaft to obtain the input shaft counting result; The output shaft counter is used for counting the output shaft speed of the output shaft to obtain the output shaft counting result; The presetting module is connected to one of the input shaft counter and the output shaft counter, and provides the preset speed difference for the input shaft speed or the output shaft speed.

4. The prediction circuit of claim 3, wherein, The presetting module is connected to the output shaft counter; The feedback module comprises an output shaft signal control submodule; The output shaft signal control submodule is connected to the output shaft counter and the input shaft counter, and is used for controlling the input shaft counter to restart counting according to the output shaft counting result in the case that the output shaft counter overflows prior to the input shaft counter.

5. The prediction circuit of claim 1, wherein, The feedback module further comprises a warning submodule; The warning submodule is connected to an output end of the output shaft counter, and is used for sending a warning signal in the case that the input shaft counter overflows prior to the output shaft counter.

6. The prediction circuit of claim 1, wherein, The presetting module comprises a power supply, a switch and a protection resistor; The power supply is connected to the protection resistor through the switch, and the protection resistor is connected to the switch and the ground. The switch is connected to the counting module, and is configured to provide a high level to the counting module when the switch is closed, and provide a low level to the counting module when the switch is opened.

7. A failure prediction method characterized by, The fault prediction method is applied to a prediction circuit of a hydraulic coupling including an input shaft and an output shaft; the prediction circuit includes a preset module, a counting module and a feedback module; the counting module includes a counter, and the counter includes an input shaft counter and an output shaft counter; the feedback module includes an input shaft signal control submodule; the input shaft signal control submodule is connected to an input end of the input shaft counter, an output end of the input shaft counter and an output end of the output shaft counter; and the fault prediction method includes: setting a preset speed difference by the preset module; counting speeds of the input shaft and the output shaft based on the preset speed difference by the counting module to obtain a counting result; the counting result includes an input shaft counting result and an output shaft counting result; controlling the counting module according to the counting result and performing fault prediction by the feedback module. The controlling the counting module according to the counting result and performing fault prediction includes: controlling the input shaft counter and the output shaft counter to stop counting according to the input shaft counting result when the input shaft counter overflows before the output shaft counter; and the case that the input shaft counter overflows before the output shaft counter indicates that the coupling has a fault.

8. The prediction method of claim 7, wherein, The controlling the counting module according to the counting result and performing fault prediction includes: If the counting of the input shaft overflows before the counting of the output shaft, it is determined that the hydraulic coupling has a fault.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer program instructions, and the computer program instructions are run by a processor to execute the steps in the method of claim 7 or 8.

Images