Engine detection method and system, intelligent terminal and storage medium

Abstract

The invention relates to an engine detection method and system, an intelligent terminal and a storage medium, and relates to the technical field of engines. Controlling a preset acquisition device to detect alternating current generated by a preset power generation coil according to the starting trigger information so as to generate alternating current frequency detection information and running time information; the power generation coil is characterized in that the power generation coil is installed in the engine, and when the engine rotates, the power generation coil cuts an engine flywheel magnetic field to generate alternating current; analyzing according to the alternating current frequency detection information and preset frequency rotating speed relation information to determine real-time rotating speed information of the engine; outputting and displaying the real-time rotating speed information of the engine, and acquiring stop triggering information of the engine; and running time information is output and displayed according to the shutdown triggering information. The engine rotation parameter detection method has the effect of improving the accuracy of engine rotation parameter detection.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an engine detection method, system, intelligent terminal and storage medium. Background Art

[0002] An engine is a device that can convert some form of energy into mechanical energy, thereby generating continuous power output to drive various machines and equipment to enable them to work or move.

[0003] In the related technology, the rotation speed and time of the engine are very important for determining whether the engine is in good condition. At present, the speed sensor is usually used to detect the engine speed. First, the installation position is selected, and the speed sensor is installed near the engine's aircraft shell, crankcase or camshaft cover to facilitate access to the rotating target wheel or gear. In order to ensure the accuracy and reliability of the sensor, it is also necessary to adjust the distance between the sensor head and the rotating target wheel. The distance is usually between 1 mm and 2 mm. Then use suitable bolts or clamps to fix the speed sensor in the specified position to ensure that it is firmly installed and will not be displaced due to vibration. Then connect the sensor's wiring terminals to the controller that receives the signal to detect the sensor's speed and rotation time.

[0004] With regard to the above-mentioned related technologies, the use of a speed sensor to detect the rotation parameters of the engine requires not only the installation of the speed sensor in a narrow position in the device, but also the need to ensure that the speed sensor does not move at a fixed position. Once displacement occurs, the detection data of the speed sensor will be inaccurate. However, during the operation of the engine, strong vibration of the equipment is inevitable, and the speed sensor will inevitably move during long-term vibration, resulting in inaccurate detection of the engine rotation parameters. There is still room for improvement. Summary of the invention

[0005] In order to improve the accuracy of engine rotation parameter detection, the present application provides an engine detection method, system, intelligent terminal and storage medium.

[0006] In a first aspect, the present application provides an engine detection method, which adopts the following technical solution: An engine detection method, comprising: Get the engine start trigger information; According to the start trigger information, a preset acquisition device is controlled to detect the alternating current generated by a preset generator coil to generate alternating current frequency detection information and operation time information; the generator coil is characterized as a generator coil installed inside the engine, and when the engine rotates, the generator coil cuts the magnetic field of the engine flywheel to generate alternating current; Analyze the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information; Output the real-time engine speed information for display and obtain the engine shutdown trigger information; The operation time information is output and displayed according to the shutdown trigger information.

[0007] By adopting the above technical solution, after detecting the start trigger information of the engine, the control acquisition device detects the alternating current of the generating coil to generate alternating current frequency detection information and operating time information, and then calculates the real-time engine speed information based on the linear relationship between the alternating current frequency detection information and the engine speed, so that the real-time engine speed information is output and displayed, and there is no need to install another speed sensor. Therefore, there will be no displacement due to the vibration of the equipment, resulting in inaccurate speed detection, and the precise position determination and fixing means when installing the speed sensor are eliminated, thereby improving the convenience and accuracy of detecting the engine speed.

[0008] Optionally, the step of controlling a preset acquisition device to detect the alternating current generated by a preset generating coil according to the start trigger information to generate the alternating current frequency detection information and the operating time information includes: According to the start trigger information, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information; Determine whether the basic frequency information meets the requirements of the preset rotation frequency information; If it does not meet the requirements, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment; If it is in compliance, timing is performed to generate real-time operation time information, and analysis is performed based on the real-time operation time information to determine the operation time information; The AC power frequency detection information is determined by analyzing the real-time operation time information and the basic frequency information.

[0009] By adopting the above technical solution, when the basic frequency information is greater than the rotation frequency information, it indicates that the engine starts to rotate. At this time, the timing can be used to generate real-time operating time information, and the AC power frequency detection information can be determined based on the real-time operating time information and the basic frequency information, so as to only detect the AC power frequency when the engine speed is within the normal range, thereby improving the accuracy of the engine speed.

[0010] Optionally, the step of analyzing the real-time operation time information and the basic frequency information to determine the AC power frequency detection information includes: Determine whether the real-time operation time information meets the requirements of the preset minimum speed time information; If it does not meet the requirement, the timing will continue to generate real-time operation time information for cyclic judgment; If yes, then determine whether the basic frequency information meets the requirements of the preset minimum speed frequency information; If it does not meet the requirements, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment; If it is in compliance, the basic frequency information is defined as the AC power frequency detection information.

[0011] By adopting the above technical solution, when the real-time operating time information reaches the minimum speed time information, it indicates that the engine speed should have reached the normal minimum speed within the time period. Therefore, it is judged whether the basic frequency information reaches the minimum speed frequency information. Once reached, the basic frequency information is defined as the AC power frequency detection information, thereby improving the accuracy of determining the AC power frequency detection information.

[0012] Optionally, the steps of timing to generate real-time operation time information and analyzing the real-time operation time information to determine the operation time information include: If the basic frequency information meets the requirements of the rotation frequency information, the timing generates real-time operation time information, and continues to determine whether the basic frequency information meets the requirements of the rotation frequency information; When the basic frequency information does not meet the requirements of the rotation frequency information, the timing is stopped and the historical operation time information is obtained; Calculate the sum of the real-time operation time information and the historical operation time information, and define the calculated sum as the operation time information; The real-time operation time information is cleared, and the basic frequency information is continuously judged whether it meets the requirements of the rotation frequency information to wait for timing again.

[0013] By adopting the above technical solution, when the engine starts to rotate, the timing starts, and when the engine stops rotating during the timing process, the timing is stopped, and the real-time operating time information and the historical operating time information are added to obtain the total operating time information, and the real-time operating time information is cleared and the engine is waited to rotate again to start timing again, thereby improving the accuracy of determining the operating time information.

[0014] Optionally, the step of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information includes: Determine whether the AC power frequency detection information meets the preset requirements of the minimum frequency information of the two-cylinder engine; If not, the preset single-cylinder engine parameter information is defined as the engine speed calculation parameter information; If it is in compliance, the preset dual-cylinder engine parameter information is defined as the engine speed calculation parameter information; The AC power frequency detection information and the engine speed calculation parameter information are analyzed and calculated according to the frequency-speed relationship information to determine the real-time engine speed information.

[0015] By adopting the above technical scheme, based on the comparison between the AC power frequency detection information and the minimum frequency information of the two-cylinder engine, it is determined whether the engine is a single-cylinder engine or a two-cylinder engine, so that different parameters are defined as engine speed calculation parameter information, and then the engine speed calculation parameter information and the AC power frequency detection information are calculated according to the frequency-speed relationship information to obtain the engine real-time speed information, thereby improving the accuracy of determining the engine real-time speed information.

[0016] Optionally, the step of analyzing and calculating the AC power frequency detection information and the engine speed calculation parameter information according to the frequency-speed relationship information to determine the real-time engine speed information includes: Analyze the engine speed calculation parameter information to determine the lowest frequency information of the engine speed; Calculate the difference between the AC power frequency detection information and the minimum speed frequency information, and define the calculated difference as the amplification frequency information; Analyze the engine speed calculation parameter information to determine the engine speed frequency increase information; Calculate the quotient between the amplification frequency information and the speed frequency amplification information, and define the calculated quotient as the increased speed information; Analyze the engine speed calculation parameter information to determine the minimum engine speed information; The sum of the minimum speed information and the increased speed information is calculated, and the calculated sum is defined as the real-time engine speed information.

[0017] By adopting the above technical solution, the difference between the AC power frequency detection information and the minimum speed frequency information is calculated to obtain the frequency increase value, and then the quotient between the frequency increase value and the frequency increase for each increase in speed is calculated to obtain the total increased speed. The increased speed is added to the minimum speed to obtain the real-time engine speed information, thereby improving the accuracy of determining the real-time engine speed information.

[0018] Optionally, the step of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information further includes: Determine whether the AC power frequency detection information meets the requirements of the preset specified frequency information; If not, determine whether the AC power frequency detection information meets the requirements of the minimum frequency information of the two-cylinder engine; If it is in compliance, the frequency and speed database is determined by analyzing the AC power frequency detection information and the frequency and speed relationship information; According to the AC power frequency detection information and the frequency speed database, the real-time engine speed information is matched and output.

[0019] By adopting the above technical solution, when the AC power frequency detection information is equal to the specified frequency information, it indicates that the engine speed has reached some integer values. Therefore, the AC power frequency detection information is directly input into the frequency speed database to match and output the corresponding engine real-time speed information, thereby improving the convenience and accuracy of determining the engine real-time speed information.

[0020] In a second aspect, the present application provides an engine detection system, which adopts the following technical solution: An engine detection system, comprising: An acquisition module is used to acquire start trigger information and stop trigger information; A memory for storing a program of an engine detection method as described in any one of the above items; The program in the processor memory can be loaded and executed by the processor to implement an engine detection method as described in any one of the above items.

[0021] By adopting the above technical solution, the processor loads and executes a program of an engine detection method stored in the memory, thereby controlling the acquisition module to obtain a series of data related to the engine detection, so as to detect the frequency and time of the alternating current generated by the engine's own generator coil, thereby obtaining the engine's operating time, and calculating the real-time speed based on the linear relationship between the alternating current frequency and the speed, without spending a lot of time and material costs due to the additional installation of a speed sensor, and without inaccurate detection due to the displacement of the speed sensor, thereby improving the accuracy of engine rotation parameter detection.

[0022] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution: An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute an engine detection method as described in any one of the above items.

[0023] By adopting the above technical solution, by operating the intelligent terminal, the processor loads and executes a program of an engine detection method stored in the memory, so as to detect the frequency and time of the alternating current generated by the engine's own generator coil, thereby obtaining the engine's operating time, and calculating the real-time speed based on the linear relationship between the alternating current frequency and the speed, without spending a lot of time and material costs due to the additional installation of a speed sensor, and without inaccurate detection due to the displacement of the speed sensor, thereby improving the accuracy of engine rotation parameter detection.

[0024] In a fourth aspect, the present application provides a computer storage medium capable of storing a corresponding program, which is convenient for improving the accuracy of engine rotation parameter detection, and adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and execute any of the above engine detection methods.

[0025] By adopting the above technical solution, a computer program of an engine detection method is stored in a computer-readable storage medium, so that the processor loads and executes the computer program in the storage medium, thereby detecting the frequency and time of the alternating current generated by the generator coil of the engine itself, thereby obtaining the engine operation time, and calculating the real-time speed based on the linear relationship between the alternating current frequency and the speed, without spending a lot of time and material costs due to the additional installation of a speed sensor, and without inaccurate detection due to the displacement of the speed sensor, thereby improving the accuracy of engine rotation parameter detection.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. After detecting the start trigger information of the engine, the acquisition device is controlled to detect the alternating current of the generator coil to generate the alternating current frequency detection information and the operation time information, and then the real-time engine speed information is calculated according to the linear relationship between the alternating current frequency detection information and the engine speed, so that the real-time engine speed information is output and displayed, and there is no need to install another speed sensor, so there will be no displacement caused by the vibration of the equipment, resulting in inaccurate speed detection, and the precise position determination and fixing means when installing the speed sensor are eliminated, thereby improving the convenience and accuracy of detecting the engine speed; 2. When the basic frequency information is greater than the rotation frequency information, it indicates that the engine starts to rotate. At this time, the real-time operation time information can be generated by timing, and the AC power frequency detection information is determined according to the real-time operation time information and the basic frequency information, so that only the AC power frequency within the normal range of the engine speed is detected, thereby improving the accuracy of the engine speed; 3. When the AC power frequency detection information is equal to the specified frequency information, it indicates that the engine speed has reached some integer value. Therefore, the AC power frequency detection information is directly input into the frequency speed database to match and output the corresponding engine real-time speed information, thereby improving the convenience and accuracy of determining the engine real-time speed information. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of an engine detection method in an embodiment of the present application.

[0028] Figure 2It is a flowchart of the steps of controlling a preset acquisition device according to startup trigger information to detect the alternating current generated by a preset generating coil to generate alternating current frequency detection information and operating time information in an embodiment of the present application.

[0029] Figure 3 It is a flowchart of the steps of analyzing the real-time operation time information and the basic frequency information to determine the AC power frequency detection information in the embodiment of the present application.

[0030] Figure 4 It is a flowchart of the steps of performing timing to generate real-time operation time information and performing analysis based on the real-time operation time information to determine the operation time information in an embodiment of the present application.

[0031] Figure 5 The present invention is a flow chart of the steps of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information. Figure 1 .

[0032] Figure 6 It is a flowchart of the steps of analyzing and calculating the AC power frequency detection information and the engine speed calculation parameter information according to the frequency-speed relationship information in an embodiment of the present application to determine the real-time engine speed information.

[0033] Figure 7 The present invention is a flow chart of the steps of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information. Figure 2 . DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-Figure 7 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] The embodiment of the present application discloses a method for detecting the real-time speed and operating time of an engine, and specifically discloses a processing terminal, a collection device and a generator coil. The collection device is connected to a charging line led out from the generator coil to detect the frequency of the alternating current generated by the generator coil and the time of generating the alternating current. The processing terminal and the collection device are connected via a data wire to realize data interaction and control. After the processing terminal receives the start trigger information of the engine, the processing terminal controls the collection device to detect the alternating current generated by the generator coil to generate alternating current frequency detection information and operating time information, thereby determining the real-time speed information of the engine after analyzing the alternating current frequency detection information and the frequency-speed relationship information, outputting the real-time speed information of the engine for display, and outputting the operating time information for display after the engine stops, thereby eliminating the need to install a complex speed sensor, and also preventing inaccurate speed detection due to displacement of the speed sensor, thereby improving the accuracy of engine rotation parameter detection.

[0036] Reference Figure 1 The present application discloses an engine detection method, comprising the following steps: Step S100: Acquire engine start trigger information.

[0037] The start trigger information refers to the trigger data for starting the engine. When the personnel control the device to start working, the device terminal sends the start trigger information to the processing terminal for acquisition.

[0038] Step S101: Start trigger information to control a preset acquisition device to detect the alternating current generated by a preset generator coil to generate alternating current frequency detection information and operating time information; the generator coil is characterized as a generator coil installed inside the engine. When the engine rotates, the generator coil cuts the engine flywheel magnetic field to generate alternating current.

[0039] When the processing terminal receives the start trigger information, it indicates that the engine will start to rotate, so the control acquisition device detects the AC power generated by the generator coil, thereby obtaining the AC power frequency detection information and the operation time information. The specific detection method refers to Figure 2 steps to provide data support for the subsequent determination of the engine speed.

[0040] The acquisition device refers to a device used to collect the frequency and time of the alternating current generated by the generating coil. The specific detection principle is as follows: the alternating current generated by the generating coil enters one input terminal of the comparator, and the other input terminal of the comparator is connected to a fixed threshold voltage. Whenever the alternating current signal exceeds the threshold voltage, the comparator will flip its output state, and the comparator outputs a square wave signal whose frequency is equal to the frequency of the alternating current. After the square wave signal enters the microcontroller unit, the timer / counter module in the microcontroller unit can measure the number of pulses to obtain the frequency of the alternating current, and start timing when receiving the alternating current to obtain the real-time operating time, and add the real-time operating time and the historical operating time to obtain the operating time.

[0041] The generator coil refers to the generator coil installed inside the engine, which is used to charge the device. The specific principle is: when the engine is rotating, the generator coil cuts the engine flywheel magnetic field to generate alternating current, which is led out of the engine through wires and rectified by a rectifier bridge to become direct current to charge the device. The collection device is connected between the rectifier bridge and the generator coil, and only collects alternating current.

[0042] The AC frequency detection information refers to the AC frequency that can be used to calculate the engine speed. The running time information refers to the total time the engine is running. Both are obtained by the acquisition device detecting the AC generated by the generator coil. For details, refer to Figure 2 steps.

[0043] Step S102: Analyze the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information.

[0044] Among them, the frequency-speed relationship information refers to the function formula and database of the engine speed obtained by analyzing the AC power frequency detection information. The database stores the AC power frequency corresponding to a specific speed value, and the function formula mainly calculates the speed based on the frequency corresponding to the non-specific speed, which is stored in the processing terminal by the operator.

[0045] The real-time engine speed information refers to the real-time engine speed value, which is determined by the processing terminal after analyzing the formula or database corresponding to the frequency corresponding to the AC power frequency detection information and the frequency-speed relationship information. The specific method is referred to Figure 5 and Figure 7 steps.

[0046] Step S103: output the real-time engine speed information for display, and obtain the engine shutdown trigger information.

[0047] Among them, after the processing terminal obtains the real-time engine speed information, the speed value is sent to the instrument end for display through serial communication, so that personnel can understand the speed of the equipment engine and detect the engine shutdown trigger information, providing a specific time for the subsequent determination of the output operation time.

[0048] The shutdown trigger information refers to the trigger data for the engine to stop rotating. When the acquisition device detects that the frequency of the alternating current is zero, it indicates that the engine has stopped rotating, and the shutdown trigger information is output at this time.

[0049] Step S104: Outputting the operation time information for display according to the shutdown trigger information.

[0050] Among them, after the processing terminal receives the shutdown trigger information, the operating time information is displayed on the instrument end, so that personnel can understand the total operating time of the engine, which is convenient for subsequent regular inspection and maintenance.

[0051] Reference Figure 2 The steps of controlling a preset acquisition device to detect the AC power generated by a preset generating coil according to the start trigger information to generate AC power frequency detection information and operation time information include: Step S200: According to the start trigger information, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information.

[0052] Among them, the basic frequency information refers to the frequency of the alternating current generated by the generating coil. After the processing terminal receives the start trigger information, the processing terminal responds to the start trigger information, thereby controlling the acquisition device to detect and send it to the processing terminal.

[0053] Step S201: determining whether the basic frequency information meets the requirements of the preset rotation frequency information.

[0054] The rotation frequency information refers to the frequency when the engine starts to rotate, which is slightly greater than zero. The requirement for the rotation frequency information is that it must be no less than the frequency corresponding to the rotation frequency information. The specific value is stored in the processing terminal by the operator.

[0055] The processing terminal determines whether the frequency corresponding to the basic frequency information is not less than the frequency corresponding to the rotation frequency information, thereby determining whether the generator coil generates alternating current and further determining whether the engine rotates.

[0056] Step S2011: If not, continue to control the acquisition device to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment.

[0057] Among them, if the processing terminal determines that the frequency corresponding to the basic frequency information is less than the frequency corresponding to the rotation frequency information, it indicates that the AC frequency is zero, and the generator coil does not generate AC power, so the engine does not rotate, thereby continuing to control the acquisition device to detect the AC frequency generated by the generator coil to continue to pay attention to the operation of the engine.

[0058] Step S2012: If it is in compliance, timing is performed to generate real-time operation time information, and analysis is performed based on the real-time operation time information to determine the operation time information.

[0059] If the processing terminal determines that the frequency corresponding to the basic frequency information is not less than the frequency corresponding to the rotation frequency information, it indicates that the generator coil generates alternating current, and the engine has started to rotate. Therefore, timing is performed to obtain real-time operation time information, and the operation time information is determined based on the real-time operation time information. For specific methods, refer to Figure 4 steps.

[0060] The operation time information in this step is consistent with the operation time information in step S101, and will not be described in detail here. The real-time operation time information refers to the time from the start of the engine operation to the present, which is obtained by the timer and sent to the processing terminal.

[0061] Step S202: Analyze the real-time operation time information and the basic frequency information to determine the AC power frequency detection information.

[0062] The AC power frequency detection information in this step is consistent with the AC power frequency detection information in step S101, and is determined by the processing terminal after analyzing the real-time operation time information and the basic frequency information. The specific method is as follows: Figure 3 steps.

[0063] Reference Figure 3 The steps of analyzing the real-time operation time information and the basic frequency information to determine the AC power frequency detection information include: Step S300: determining whether the real-time operation time information meets the requirement of the preset minimum speed time information.

[0064] The minimum speed time information refers to the time when the engine reaches the normal minimum speed, and the requirement for the minimum speed time information refers to the time corresponding to the minimum speed time information, both of which are stored in the processing terminal by the operator.

[0065] The processing terminal determines whether the time corresponding to the real-time operation time information is equal to the time corresponding to the minimum speed time information, thereby determining whether the engine can reach the normal minimum speed.

[0066] Step S301: If it does not meet the requirement, then continue to count and generate real-time operation time information for cyclic determination.

[0067] Among them, if the processing terminal determines that the time corresponding to the real-time operating time information is not equal to the time corresponding to the minimum speed time information, it means that the time corresponding to the real-time operating time information is shorter, and the engine cannot reach the normal minimum speed. Therefore, the timing continues to generate the real-time operating time information, thereby continuing to wait for the engine speed to reach the normal minimum speed.

[0068] Step S302: If yes, determine whether the basic frequency information meets the requirement of the preset minimum speed frequency information.

[0069] Among them, the minimum speed frequency information refers to the frequency of the alternating current generated by the generator coil when the engine rotates at the minimum speed. It is obtained by detecting the alternating current frequency of the generator coil when the operator controls the engine to rotate at the minimum speed. The requirement for the minimum speed frequency information is that it is not less than the frequency corresponding to the minimum speed frequency information.

[0070] If the processing terminal determines that the time corresponding to the real-time operating time information is equal to the time corresponding to the minimum speed time information, it indicates that the engine may have reached the normal minimum speed. Therefore, it is further determined whether the frequency corresponding to the basic frequency information is not lower than the frequency corresponding to the minimum speed frequency information, thereby determining whether the engine is in a normal operating state.

[0071] Step S3021: If not, continue to control the acquisition device to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment.

[0072] Among them, if the processing terminal determines that the frequency corresponding to the basic frequency information is lower than the frequency corresponding to the minimum speed frequency information, it means that even if the operation time has reached the time to speed up to the minimum speed, the speed has not actually reached the minimum speed. Therefore, the acquisition device continues to control the AC power frequency generated by the generating coil until the AC power frequency is equal to the minimum speed frequency.

[0073] Step S3022: If it is in compliance, the basic frequency information is defined as AC frequency detection information.

[0074] Among them, if the processing terminal determines that the frequency corresponding to the basic frequency information is not lower than the frequency corresponding to the minimum speed frequency information, it indicates that the engine speed is at a normal speed, and the AC power frequency at this time is the frequency when the engine is running normally. Therefore, the basic frequency information can be defined as AC power frequency detection information.

[0075] Reference Figure 4 The steps of timing to generate real-time operation time information and analyzing the real-time operation time information to determine the operation time information include: Step S400: If the basic frequency information meets the requirement of the rotation frequency information, then the timing generates the real-time operation time information, and continues to determine whether the basic frequency information meets the requirement of the rotation frequency information.

[0076] Among them, when the frequency corresponding to the basic frequency information is not less than the frequency corresponding to the rotation frequency information, it indicates that the engine starts to rotate. At this time, the control timer starts timing and sends it to the processing terminal to obtain real-time operating time information, and continues to judge whether the basic frequency information is not less than the frequency corresponding to the rotation frequency information, thereby ensuring that the real-time operating time information within one start and stop time of the engine is only the operating time within the start and stop time, and will not cause the real-time operating time information to be inaccurate due to the addition of the operating time during two starts and stops.

[0077] Step S401: When the basic frequency information does not meet the requirement of the rotation frequency information, stop timing and obtain historical operation time information.

[0078] Among them, in the process of continuing to judge whether the frequency corresponding to the basic frequency information is not less than the frequency corresponding to the rotation frequency information, when it is determined that the frequency corresponding to the basic frequency information is less than the frequency corresponding to the rotation frequency information, it indicates that the engine has stopped rotating. At this time, the timing is stopped to prevent the real-time operating time information from exceeding the accurate operating time, and the historical operating time information is called to provide data support for the subsequent determination of the operating time information.

[0079] The historical operation time information refers to the total operation time before the engine is started and stopped, which is accumulated by the processing terminal after recording the real-time operation time each time and stored in the memory waiting for calling.

[0080] Step S402: Calculate the sum of the real-time operation time information and the historical operation time information, and define the calculated sum as the operation time information.

[0081] The operation time information in this step is consistent with the operation time information in step S101, and is obtained by the processing terminal adding the time corresponding to the real-time operation time information to the time corresponding to the historical operation time information.

[0082] Step S403: clear the real-time operation time information, and continue to determine whether the basic frequency information meets the requirements of the rotation frequency information to wait for timing again.

[0083] Among them, after obtaining the operation time information, the processing terminal clears the time corresponding to the real-time operation time information, and continues to determine whether the frequency corresponding to the basic frequency information is not less than the frequency corresponding to the rotation frequency information, thereby waiting for the next engine start and stop to start timing.

[0084] Reference Figure 5The steps of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information include: Step S500: Determine whether the AC power frequency detection information meets the preset requirement of the minimum frequency information of the two-cylinder engine.

[0085] Among them, the minimum frequency information of the two-cylinder engine refers to the frequency of the alternating current generated by the generator coil when the two-cylinder engine runs at the lowest speed, which is usually 125Hz. The requirement for the minimum frequency information of the two-cylinder engine refers to a frequency not lower than that corresponding to the minimum frequency information of the two-cylinder engine, which is stored in the processing terminal by the operator.

[0086] In the same speed range, the frequency of the two-cylinder engine driving the generator coil to generate AC is much greater than the frequency of the single-cylinder engine driving the generator coil to generate AC. For example, at 1000-4000rpm / min, the frequency range of the single-cylinder engine driving the generator coil to generate AC is 46.5-125Hz, while the frequency range of the two-cylinder engine driving the generator coil to generate AC is 125Hz-618.44Hz. Therefore, the frequencies of the two are two unrelated ranges. Therefore, the processing terminal determines whether the frequency corresponding to the AC frequency detection information is not lower than the frequency corresponding to the minimum frequency information of the two-cylinder engine, thereby determining whether the detected engine is a single-cylinder engine or a two-cylinder engine, providing data support for the subsequent determination of the speed.

[0087] Step S501: If not, the preset single-cylinder engine parameter information is defined as the engine speed calculation parameter information.

[0088] Among them, if the processing terminal determines that the frequency corresponding to the AC power frequency detection information is lower than the frequency corresponding to the minimum frequency information of the two-cylinder engine, it indicates that the detected engine is a single-cylinder engine. Therefore, the single-cylinder engine parameter information is defined as the engine speed calculation parameter information to provide data support for subsequent calculation of the speed.

[0089] The single-cylinder engine parameter information refers to the minimum speed of the single-cylinder engine, the frequency corresponding to the minimum speed, and the frequency of the alternating current increase when the speed increases by one revolution, and is stored in the processing terminal by the operator. The engine speed calculation parameter information refers to the relevant parameters for calculating the engine speed. The engine speed calculation parameter information in this step is actually consistent with the parameters corresponding to the single-cylinder engine parameter information.

[0090] Step S502: If it is in compliance, the preset two-cylinder engine parameter information is defined as the engine speed calculation parameter information.

[0091] Among them, if the processing terminal determines that the frequency corresponding to the AC power frequency detection information is not lower than the frequency corresponding to the minimum frequency information of the two-cylinder engine, it indicates that the detected engine is a two-cylinder engine. Therefore, the two-cylinder engine parameter information is defined as the engine speed calculation parameter information to provide data support for the subsequent calculation of the speed.

[0092] The two-cylinder engine parameter information refers to the minimum speed of the two-cylinder engine, the frequency corresponding to the minimum speed, and the frequency of the alternating current increase when the speed increases by one revolution, and is stored in the processing terminal by the operator. The engine speed calculation parameter information refers to the relevant parameters for calculating the engine speed. The engine speed calculation parameter information in this step is actually consistent with the parameters corresponding to the two-cylinder engine parameter information.

[0093] Step S503: Analyze and calculate the AC power frequency detection information and the engine speed calculation parameter information according to the frequency-speed relationship information to determine the real-time engine speed information.

[0094] After the processing terminal determines the engine speed calculation parameter information, the processing terminal analyzes and calculates the frequency corresponding to the AC frequency detection information and the parameters corresponding to the engine speed calculation parameter information according to the functional relationship corresponding to the frequency-speed relationship information to obtain the real-time engine speed information. The specific method is as follows: Figure 6 steps.

[0095] Reference Figure 6 The step of analyzing and calculating the AC power frequency detection information and the engine speed calculation parameter information according to the frequency-speed relationship information to determine the real-time engine speed information includes: Step S600: Analyze the engine speed calculation parameter information to determine the lowest frequency information of the engine speed.

[0096] The minimum speed frequency information refers to the frequency of the alternating current generated by the generator coil when the engine is at the lowest speed, and is obtained by the processing terminal identifying and calling the parameters corresponding to the engine speed calculation parameter information.

[0097] Step S601: Calculate the difference between the AC power frequency detection information and the minimum rotation speed frequency information, and define the calculated difference as the amplification frequency information.

[0098] The frequency increase information refers to the increase in the frequency of the current AC power compared to the minimum frequency, and is obtained by calculating the difference between the frequency corresponding to the AC power frequency detection information and the frequency corresponding to the minimum frequency information of the rotation speed by the processing terminal.

[0099] Step S602: Analyze the engine speed calculation parameter information to determine the engine speed frequency increase information.

[0100] The speed frequency increase information refers to the frequency change value of the alternating current generated by the generator coil every time the engine speed increases by one revolution, and is obtained by the processing terminal identifying and calling the parameters corresponding to the engine speed calculation parameter information.

[0101] Step S603: Calculate the quotient between the increase frequency information and the rotation speed frequency increase information, and define the calculated quotient as the increase rotation speed information.

[0102] The increased speed information refers to the increased speed corresponding to the frequency increased on the lowest frequency, which is obtained by the processing terminal calculating the quotient between the frequency corresponding to the frequency increase information and the frequency value increased by one revolution per rotation corresponding to the speed frequency increase information.

[0103] Step S604: Analyze the engine speed calculation parameter information to determine the minimum engine speed information.

[0104] The minimum speed information refers to the minimum speed of the engine, which is obtained by the processing terminal identifying and calling the parameters corresponding to the engine speed calculation parameter information.

[0105] Step S605: Calculate the sum of the minimum speed information and the increased speed information, and define the calculated sum as the real-time engine speed information.

[0106] The real-time engine speed information in this step is consistent with the real-time engine speed information in step S102, and is obtained by the processing terminal calculating the sum of the speed corresponding to the minimum speed information and the speed corresponding to the increased speed information.

[0107] Reference Figure 7 The step of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information also includes: Step S700: determining whether the AC power frequency detection information meets the requirements of the preset designated frequency information.

[0108] Among them, the specified frequency information refers to the frequency of the alternating current generated by the generator coil when the engine speed is at 1000, 2000, 3000, and 4000 rpm / min. The corresponding frequencies for a single-cylinder engine are 46.5, 75, 89.3, and 118.75 Hz, and the corresponding frequencies for a two-cylinder engine are 128.24, 357, 424, and 618.44 Hz. The requirement for the specified frequency information is that the frequency is equal to the frequency corresponding to the specified frequency information.

[0109] By judging whether the frequency corresponding to the AC power frequency detection information is equal to the frequency corresponding to the specified frequency information, it is determined whether the engine speed is exactly at some specified values, and the speed can be directly matched without further calculation.

[0110] Step S701: If not, determine whether the AC power frequency detection information meets the requirements of the minimum frequency information of the two-cylinder engine.

[0111] Among them, if the processing terminal determines that the frequency corresponding to the AC power frequency detection information is not equal to the frequency corresponding to the specified frequency information, it means that the engine speed is not at some specified value, and calculation is required to obtain the real-time speed. Therefore, it is determined whether the frequency corresponding to the AC power frequency detection information is not lower than the frequency corresponding to the minimum frequency information of the two-cylinder engine, so as to Figure 5 The real-time speed is calculated by following the steps in

[0112] Step S702: If it is in compliance, then analyze the AC power frequency detection information and the frequency-speed relationship information to determine the frequency-speed database.

[0113] Among them, if the processing terminal determines that the frequency corresponding to the AC power frequency detection information is equal to the frequency corresponding to the specified frequency information, it indicates that the engine speed is at some specified value. Therefore, according to the AC power frequency detection information, the corresponding frequency-speed database is called in the frequency-speed relationship information to provide data support for the subsequent determination of the real-time speed.

[0114] The frequency-speed database refers to a database that stores the corresponding relationship between the current engine's specified speed and frequency. The operator stores the frequency-speed database of the single-cylinder engine and the two-cylinder engine in the processing terminal to form frequency-speed relationship information. The processing terminal then selects the corresponding database as the frequency-speed database for speed matching based on the frequency corresponding to the AC power frequency detection information.

[0115] Step S703: Match and output the real-time engine speed information according to the AC power frequency detection information and the frequency and speed database.

[0116] The real-time engine speed information in this step is consistent with the real-time engine speed information in step S102, and the processing terminal inputs the frequency corresponding to the AC power frequency detection information into the frequency speed database to match the output speed.

[0117] Based on the same inventive concept, an embodiment of the present invention provides an engine detection system, comprising: An acquisition module is used to acquire startup trigger information, shutdown trigger information and historical operation time information; A memory for storing a program of an engine detection method; The program in the memory can be loaded and executed by the processor to implement an engine detection method.

[0118] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the above-described system, device and unit can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0119] An embodiment of the present invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and execute an engine detection method.

[0120] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0121] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute an engine detection method.

[0122] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the above-described system, device and unit can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0123] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. An engine detection method, characterized in that: include: Get the engine start trigger information; According to the start trigger information, a preset acquisition device is controlled to detect the alternating current generated by the preset generating coil to generate alternating current frequency detection information and operation time information; The generator coil is characterized as a generator coil installed inside the engine. When the engine rotates, the generator coil cuts the magnetic field of the engine flywheel to generate alternating current; Analyze the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information; Output the real-time engine speed information for display and obtain the engine shutdown trigger information; The operation time information is output and displayed according to the shutdown trigger information.

2. An engine detection method according to claim 1, characterized in that: The steps of controlling a preset acquisition device to detect the AC generated by a preset generating coil according to the start trigger information to generate AC frequency detection information and operation time information include: According to the start trigger information, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information; Determine whether the basic frequency information meets the requirements of the preset rotation frequency information; If it does not meet the requirements, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment; If it is in compliance, timing is performed to generate real-time operation time information, and analysis is performed based on the real-time operation time information to determine the operation time information; The AC power frequency detection information is determined by analyzing the real-time operation time information and the basic frequency information.

3. An engine detection method according to claim 2, characterized in that: The steps of analyzing the real-time operation time information and the basic frequency information to determine the AC power frequency detection information include: Determine whether the real-time operation time information meets the requirements of the preset minimum speed time information; If it does not meet the requirement, the timing will continue to generate real-time operation time information for cyclic judgment; If yes, then determine whether the basic frequency information meets the requirements of the preset minimum speed frequency information; If it does not meet the requirements, the acquisition device is controlled to detect the alternating current generated by the generating coil to generate basic frequency information for cyclic judgment; If it is in compliance, the basic frequency information is defined as the AC power frequency detection information.

4. An engine detection method according to claim 2, characterized in that: The steps of timing to generate real-time operation time information and analyzing the real-time operation time information to determine the operation time information include: If the basic frequency information meets the requirements of the rotation frequency information, the timing generates real-time operation time information, and continues to determine whether the basic frequency information meets the requirements of the rotation frequency information; When the basic frequency information does not meet the requirements of the rotation frequency information, the timing is stopped and the historical operation time information is obtained; Calculate the sum of the real-time operation time information and the historical operation time information, and define the calculated sum as the operation time information; The real-time operation time information is cleared, and the basic frequency information is continuously judged whether it meets the requirements of the rotation frequency information to wait for timing again.

5. The engine detection method according to claim 1, characterized in that: The step of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information includes: Determine whether the AC power frequency detection information meets the preset requirements of the minimum frequency information of the two-cylinder engine; If not, the preset single-cylinder engine parameter information is defined as the engine speed calculation parameter information; If it is in compliance, the preset dual-cylinder engine parameter information is defined as the engine speed calculation parameter information; The AC power frequency detection information and the engine speed calculation parameter information are analyzed and calculated according to the frequency-speed relationship information to determine the real-time engine speed information.

6. An engine detection method according to claim 5, characterized in that: The step of analyzing and calculating the AC power frequency detection information and the engine speed calculation parameter information according to the frequency-speed relationship information to determine the real-time engine speed information includes: Analyze the engine speed calculation parameter information to determine the lowest frequency information of the engine speed; Calculate the difference between the AC power frequency detection information and the minimum speed frequency information, and define the calculated difference as the amplification frequency information; Analyze the engine speed calculation parameter information to determine the engine speed frequency increase information; Calculate the quotient between the amplification frequency information and the speed frequency amplification information, and define the calculated quotient as the increased speed information; Analyze the engine speed calculation parameter information to determine the minimum engine speed information; The sum of the minimum speed information and the increased speed information is calculated, and the calculated sum is defined as the real-time engine speed information.

7. The engine detection method according to claim 5, characterized in that: The step of analyzing the AC power frequency detection information and the preset frequency-speed relationship information to determine the real-time engine speed information also includes: Determine whether the AC power frequency detection information meets the requirements of the preset specified frequency information; If not, determine whether the AC power frequency detection information meets the requirements of the minimum frequency information of the two-cylinder engine; If it is in compliance, the frequency and speed database is determined by analyzing the AC power frequency detection information and the frequency and speed relationship information; According to the AC power frequency detection information and the frequency speed database, the real-time engine speed information is matched and output.

8. An engine detection system, characterized in that: include: An acquisition module is used to acquire start trigger information and stop trigger information; A memory for storing a program of an engine detection method according to any one of claims 1 to 7; The program in the memory can be loaded and executed by the processor to implement an engine detection method as claimed in any one of claims 1 to 7.

9. An intelligent terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes an engine detection method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute an engine detection method according to any one of claims 1 to 7.

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