Encoder-free detection method, system and device and storage medium
By employing an encoderless detection method and utilizing frequency conversion signal sampling and accumulation technology, non-contact detection of billet length and spindle angle is achieved. This solves the problems of high cost and limited accuracy in existing technologies, and improves the accuracy and stability of the detection system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 新余钢铁股份有限公司
- Filing Date
- 2026-02-06
- Publication Date
- 2026-04-21
AI Technical Summary
Existing detection methods rely heavily on the stability and accuracy of encoder and detection switch signals, resulting in high detection system costs and susceptibility to mechanical vibration and installation accuracy.
An encoderless detection method is adopted, which uses a detection switch to sample the variable frequency signal of the object to be tested on the transport equipment, and accumulates the variable frequency signal to calculate the information to be tested, including the length of the billet and the angle of the rotating spindle, etc. The variable frequency signal of the variable frequency equipment is used for non-contact detection.
It reduces the cost of the testing system, improves the accuracy of the test results, and avoids the impact on mechanical vibration and installation precision.
Smart Images
Figure CN121898320A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of industrial production automation technology, and more specifically, to an encoderless detection method, system, device, and storage medium. Background Technology
[0002] In the field of industrial production braking control, when it is necessary to measure the length or angle of a moving object, such as measuring the length of a steel billet on a roller conveyor or the rotation angle of a variable frequency circular rotating machine, it is usually necessary for the encoder on the roller conveyor to cooperate with the detection switch to read the pulse signal of the encoder in the PLC or DCS and perform equivalent conversion to finally obtain information such as the length or angle of the object. However, this method is highly dependent on the stability and accuracy of the encoder and detection switch signals, which greatly increases the cost of the detection system. Summary of the Invention
[0003] In view of this, the purpose of the present invention is to provide an encoderless detection method, system, device and storage medium to solve the problem that existing detection methods heavily rely on encoders.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides an encoderless detection method applied to a detection system, the detection system including a transport device, a frequency converter, and a detection switch, wherein the frequency converter is used to drive the transport device to transport an object to be detected, and the detection switch is positioned facing the transport device; the method includes: Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion equipment is sampled to obtain multiple frequency conversion signals; Multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
[0005] In an optional implementation, the detection system includes a length detection system, the transport equipment includes an outlet roller conveyor for transporting steel billets from the heating furnace to the rolling mill, and the step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the detection signal of the billet head by the detection switch, the frequency conversion device performs frequency conversion signal sampling; Based on the detection signal from the tail of the billet detected by the detection switch, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
[0006] In an optional implementation, the information of the object to be measured includes the length of the steel billet, and the step of calculating the information of the object to be measured based on the accumulated signal includes: Obtain the standard cumulative signal and standard billet length corresponding to the standard billet; The billet length is calculated based on the accumulated signal, the standard accumulated signal, and the standard billet length.
[0007] In an optional implementation, the method further includes: If the detection switch does not receive a detection signal for the billet, the multiple frequency conversion signals are accumulated, and the detection switch is controlled to continue detecting the billet on the roller conveyor. If the detection signal of the billet is not obtained within the preset time, it is determined that the tail of the billet has passed the detection switch, and the accumulated signal is obtained. If the detection signal of the billet is obtained within the preset time, it is determined that the billet has not passed the detection switch, the accumulation of the frequency conversion signal is stopped, and the sampling of the frequency conversion signal continues.
[0008] In an optional implementation, the detection system includes an angle detection system, the transport equipment includes a rotating spindle for driving components to perform circular motion, and the step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the first detection signal of the rotating spindle from the detection switch, the frequency conversion device samples the frequency conversion signal. Based on the second detection signal of the rotating spindle, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
[0009] In an optional implementation, the information of the object under test includes the displacement angle of the rotational spindle, and the step of calculating the test information of the object under test based on the accumulated signal includes: Acquire multiple accumulated signals, and use the largest accumulated signal among the accumulated signals as the target signal; The angle equivalent factor is determined based on the target signal and the circumferential angle. The displacement angle is calculated based on the current accumulated signal and the angle equivalent factor.
[0010] In an optional implementation, the method further includes: Upon receiving the first detection signal, the accumulated signal is cleared to zero. Furthermore, after acquiring the accumulated signal and the second detection signal, the accumulated signal is cleared to zero.
[0011] Secondly, the present invention provides an encoderless detection system, comprising: a transport device, a frequency converter, a detection switch, and a signal processing device. The frequency converter is used to drive the transport device to transport the object to be detected. The detection switch is disposed opposite to the transport device. The signal processing device is communicatively connected to the transport device, the frequency converter, and the detection switch. The signal processing device is used for: Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion equipment is sampled to obtain multiple frequency conversion signals; Multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
[0012] Thirdly, the present invention provides an electronic device including a processor and a memory, the memory storing machine-executable instructions executable by the processor, the processor executing the machine-executable instructions to implement the encoderless detection method described in the first aspect.
[0013] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the encoderless detection method described in the first aspect.
[0014] The present invention provides an encoderless detection method, system, device and storage medium that does not require an encoder. It only needs to obtain the sampling information of the frequency converter to obtain the detection result corresponding to the object in motion. Moreover, the whole process adopts non-contact detection, which is not affected by the vibration of on-site mechanical equipment or the installation accuracy, thus improving the accuracy of the detection result.
[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A block diagram of an electronic device provided by an embodiment of the present invention is shown; Figure 2 A flowchart illustrating an encoderless detection method provided by an embodiment of the present invention is shown. Figure 3 A schematic diagram of a length detection system provided in an embodiment of the present invention is shown; Figure 4 A schematic diagram of an angle detection system provided in an embodiment of the present invention is shown.
[0018] icon: 100 - Electronic device; 110 - Memory; 120 - Processor; 130 - Communication module; 410 - Rotary spindle end face; 420 - Spindle center; 430 - Spindle positioning sensor; 440 - Proximity switch. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0022] Please refer to Figure 1 , Figure 1This is a block diagram of an electronic device 100 provided in this embodiment. The electronic device 100 includes a memory 110, a processor 120, and a communication module 130. The memory 110, processor 120, and communication module 130 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines.
[0023] The memory 110 is used to store programs or data. The memory 110 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc.
[0024] The processor 120 is used to read / write data or programs stored in the memory 110 and to perform corresponding functions.
[0025] The communication module 130 is used to establish a communication connection between the electronic device 100 and other communication terminals through the network, and to send and receive data through the network.
[0026] It should be understood that, Figure 1 The structure shown is only a schematic diagram of the electronic device 100. The electronic device 100 may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown. Figure 1 The components shown can be implemented using hardware, software, or a combination thereof.
[0027] Please refer to Figure 2 , Figure 2 This is a flowchart illustrating an encoderless detection method provided in this embodiment. The method includes: S210. Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion device is sampled to obtain multiple frequency conversion signals.
[0028] This method can be applied to a detection system, which includes a transport device, a frequency converter, and a detection switch. The frequency converter is used to drive the transport device to transport the object to be detected, and the detection switch is positioned opposite the transport device.
[0029] The core function of frequency converters is speed regulation. By sampling the frequency converter signal, the speed information of the object to be detected can be determined. Since the object is usually transported by equipment such as gears, rollers or conveyor belts, the object to be detected is in motion most of the time.
[0030] S220. The multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
[0031] The accumulated signal obtained by accumulating the frequency conversion signal is the accumulated velocity of the object to be detected. By performing corresponding conversion based on the accumulated velocity, the test information of the object to be detected, such as length information and angle information, can be obtained.
[0032] This embodiment does not require an additional encoder. It only needs to obtain the sampling information of the frequency converter to obtain the detection results corresponding to the object in motion. Moreover, the entire process adopts non-contact detection, which is not affected by the vibration of on-site mechanical equipment or the installation accuracy, thus improving the accuracy of the detection results.
[0033] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a length detection system provided in this embodiment.
[0034] In one embodiment, the detection system includes a length detection system, the transport equipment includes an outlet roller conveyor for transporting steel billets from the heating furnace to the rolling mill, and the step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the detection signal of the billet head by the detection switch, the frequency conversion device performs frequency conversion signal sampling; Based on the detection signal from the tail of the billet detected by the detection switch, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
[0035] like Figure 3 As shown, when the furnace door is opened, the high-temperature steel billet heated to the rolling temperature in the furnace will run towards the mill via the furnace exit roller conveyor. The steel billet passes through the first hot inspection point HDM1, the roughing mill pre-pinch roll, the second hot inspection point HDM2, the 1H mill and the subsequent mill in sequence.
[0036] When the billet head passes the first hot check point HDM1, HDM1 generates a rising transition from the "0" state to the "1" state. The system's PLC records this transition moment and starts the counting program block. The counting program block records the frequency conversion signal of the frequency converter once every preset time interval, such as every 10ms. The frequency conversion signal can be the feedback speed value.
[0037] When all the steel billets have passed the first hot inspection point HDM1, the recording of the feedback speed value of the frequency converter is stopped, thus obtaining multiple frequency conversion signals.
[0038] This embodiment records the speed of the object to be detected by using the frequency conversion signal of the frequency converter. Then, the length and other information of the object can be obtained by converting the speed. No additional encoder is required, which reduces the cost of the detection system.
[0039] In one embodiment, the information of the object to be measured includes the length of the steel billet, and the step of calculating the information of the object to be measured based on the accumulated signal includes: Obtain the standard cumulative signal and standard billet length corresponding to the standard billet; The billet length is calculated based on the accumulated signal, the standard accumulated signal, and the standard billet length.
[0040] The first 10ms frequency conversion feedback speed value is stored as a constant n0 when the first hot detection point HMD1 is in the "1" state. When the second 10ms arrives, the frequency conversion feedback speed value n is read again and added to the previously recorded speed value n0 to get n1. When the third 10ms arrives, the frequency conversion feedback speed value is read again and added to the previously recorded speed value to get n2, and so on. When the billet has completely passed through the HMD1 detection device (HMD1 generates a drop-off transition from the "1" state to the "0" state), the "0" state of this HMD blocks the counter value from accumulating, and the final accumulated signal value is c=nn.
[0041] Taking a standard steel billet with a length of 12000 mm as an example, the accumulated signal value obtained by the standard steel billet through the first hot inspection point HDM1 is P. Then the length factor e of the steel billet is P ÷ 12000.
[0042] Then the current length of the billet is T = c ÷ e.
[0043] In this embodiment, the frequency conversion feedback speed is sampled and accumulated by the detection signal of the thermal detection point to obtain the accumulated signal. Then, the length of the steel billet to be tested is calculated based on the accumulated signal, without the need to use an encoder.
[0044] In one embodiment, the method further includes: If the detection switch does not receive a detection signal for the billet, the multiple frequency conversion signals are accumulated, and the detection switch is controlled to continue detecting the billet on the roller conveyor. If the detection signal of the billet is not obtained within the preset time, it is determined that the tail of the billet has passed the detection switch, and the accumulated signal is obtained. If the detection signal of the billet is obtained within the preset time, it is determined that the billet has not passed the detection switch, the accumulation of the frequency conversion signal is stopped, and the sampling of the frequency conversion signal continues.
[0045] When the HDM1 detection status at the first hot check point is "0", indicating no steel, the billet detection on the roller conveyor can continue for a period of time. If no billet is detected, it is determined that all billets have passed the first hot check point, and the length of the billet can be calculated normally. If a billet is detected, it means that the billet has not yet passed the first hot check point, and frequency converter signal sampling needs to continue.
[0046] This embodiment detects the billet even when the detection signal for the billet has not been obtained. Since billet detection is usually a hot inspection, the delay can avoid interference from dust, billet temperature, water vapor, and mist, thereby improving detection accuracy.
[0047] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of an angle detection system provided in this embodiment.
[0048] In one embodiment, the detection system includes an angle detection system, the transport equipment includes a rotating spindle for driving components to perform circular motion, and the step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the first detection signal of the rotating spindle from the detection switch, the frequency conversion device samples the frequency conversion signal. Based on the second detection signal of the rotating spindle, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
[0049] like Figure 4 As shown, the angle detection system includes a rotating spindle end face 410, a spindle center 420, a spindle positioning sensing iron 430, and a proximity switch 440.
[0050] When the spindle is driven to rotate by the variable frequency motor, the positioning induction iron installed on the spindle rotates synchronously with the spindle. When the induction iron rotates to the proximity switch position, the proximity switch jumps from the "0" state to the "1" state. The system PLC records this jump moment and starts the counting program block. This counting program block records the variable frequency feedback speed value once every preset time interval, such as every 10ms.
[0051] When the spindle rotates one revolution, it senses the proximity switch again. The proximity switch then generates a second rising transition from the "0" state to the "1" state. At this point, recording the frequency conversion feedback speed value can be stopped.
[0052] This embodiment records the speed of the object to be detected by using the frequency conversion signal of the frequency converter. Then, by converting the speed, information such as the displacement angle of the object to be detected can be obtained. No additional encoder is required, which reduces the cost of the detection system.
[0053] In one embodiment, the information of the object under test includes the displacement angle of the rotational axis, and the step of calculating the test information of the object under test based on the accumulated signal includes: Acquire multiple accumulated signals, and use the largest accumulated signal among the accumulated signals as the target signal; The angle equivalent factor is determined based on the target signal and the circumferential angle. The displacement angle is calculated based on the current accumulated signal and the angle equivalent factor.
[0054] During the first 10ms (which may be "0" as the spindle has passed the proximity switch position), the frequency converter feedback speed value is recorded and stored as a constant n0. When the second 10ms arrives, the frequency converter feedback speed value n is read again and added to the previously recorded value to form n1. At the third 10ms, another frequency converter feedback speed value is recorded and added to the previously recorded value to form n2. Simultaneously, with each accumulation of n, the spindle rotation angle changes proportionally to the accumulated value c, and the PLC calculates and outputs the corresponding angle value. This displacement angle value is fed back to the control system, forming a closed-loop negative feedback loop to control the target displacement angle of the spindle rotation.
[0055] When the spindle sensing element reaches the proximity switch, and the proximity switch changes from state "0" to state "1", the PLC's internal accumulator resets to "0". Starting from the next 10ms, every 10ms, the PLC accumulator increments the inverter's feedback speed value until the spindle sensing element rotates one revolution and reaches the proximity switch's sensing position again. At this point, the proximity switch changes from state "0" to state "1" again, and the maximum value nn in the accumulator is latched. This maximum value nn ÷ 360 degrees = angle equivalent factor e. This equivalent factor e is the calibration parameter.
[0056] The accumulated value in the PLC is the displacement angle c ÷ e = ɑ.
[0057] In this embodiment, the frequency conversion feedback speed is sampled and accumulated by the detection signal of the hot detection point to obtain the accumulated signal. Then, the displacement angle is calculated based on the accumulated signal, without the need to use an encoder.
[0058] In one embodiment, the method further includes: Upon receiving the first detection signal, the accumulated signal is cleared to zero. Furthermore, after acquiring the accumulated signal and the second detection signal, the accumulated signal is cleared to zero.
[0059] When the sensing iron rotates to the proximity switch position, the PLC first clears the accumulator to zero and then starts the counting program block. After the spindle rotates one revolution, it senses the proximity switch again, and the PLC clears the accumulator to zero to continue the next round of accumulation, thereby improving the accuracy of the detection data.
[0060] In one embodiment, this embodiment provides an encoderless detection system, including: a transport device, a frequency converter, a detection switch, and a signal processing device. The frequency converter is used to drive the transport device to transport the object to be detected. The detection switch is positioned opposite the transport device. The signal processing device is communicatively connected to the transport device, the frequency converter, and the detection switch. The signal processing device is used for: Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion equipment is sampled to obtain multiple frequency conversion signals; Multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
[0061] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.
[0062] In addition, the functional modules in the various embodiments of the present invention 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.
[0063] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. An encoderless detection method, characterized in that, The method is applied to a detection system, which includes a transport device, a frequency converter, and a detection switch. The frequency converter drives the transport device to transport the object to be detected. The detection switch is positioned opposite the transport device. Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion equipment is sampled to obtain multiple frequency conversion signals; Multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
2. The encoderless detection method according to claim 1, characterized in that, The detection system includes a length detection system, and the transport equipment includes an outlet roller conveyor for transporting steel billets from the heating furnace to the rolling mill. The step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the detection signal of the billet head by the detection switch, the frequency conversion device performs frequency conversion signal sampling; Based on the detection signal from the tail of the billet detected by the detection switch, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
3. The encoderless detection method according to claim 2, characterized in that, The information of the object to be tested includes the length of the steel billet. The step of calculating the test information of the object to be tested based on the accumulated signal includes: Obtain the standard cumulative signal and standard billet length corresponding to the standard billet; The billet length is calculated based on the accumulated signal, the standard accumulated signal, and the standard billet length.
4. The encoderless detection method according to claim 3, characterized in that, The method further includes: If the detection switch does not receive a detection signal for the billet, the multiple frequency conversion signals are accumulated, and the detection switch is controlled to continue detecting the billet on the roller conveyor. If the detection signal of the billet is not obtained within the preset time, it is determined that the tail of the billet has passed the detection switch, and the accumulated signal is obtained. If the detection signal of the billet is obtained within the preset time, it is determined that the billet has not passed the detection switch, the accumulation of the frequency conversion signal is stopped, and the sampling of the frequency conversion signal continues.
5. The encoderless detection method according to claim 1, characterized in that, The detection system includes an angle detection system, and the transport equipment includes a rotating spindle for driving components to perform circular motion. The step of sampling the frequency conversion signal of the frequency conversion device to obtain multiple frequency conversion signals based on the detection signal of the object to be measured on the transport equipment by the detection switch includes: Based on the first detection signal of the rotating spindle from the detection switch, the frequency conversion device samples the frequency conversion signal. Based on the second detection signal of the rotating spindle, the sampling of the frequency conversion signal is stopped to obtain multiple frequency conversion signals.
6. The encoderless detection method according to claim 5, characterized in that, The information of the object under test includes the displacement angle of the rotational spindle. The step of calculating the test information of the object under test based on the accumulated signal includes: Acquire multiple accumulated signals, and use the largest accumulated signal among the accumulated signals as the target signal; The angle equivalent factor is determined based on the target signal and the circumferential angle. The displacement angle is calculated based on the current accumulated signal and the angle equivalent factor.
7. The encoderless detection method according to claim 6, characterized in that, The method further includes: Upon receiving the first detection signal, the accumulated signal is cleared to zero. Furthermore, after acquiring the accumulated signal and the second detection signal, the accumulated signal is cleared to zero.
8. An encoderless detection system, characterized in that, include: The system includes a transport device, a frequency converter, a detection switch, and a signal processing device. The frequency converter drives the transport device to transport the object to be detected. The detection switch is positioned opposite the transport device. The signal processing device is communicatively connected to the transport device, the frequency converter, and the detection switch. The signal processing device is used for: Based on the detection signal of the object to be tested on the transport equipment by the detection switch, the frequency conversion equipment is sampled to obtain multiple frequency conversion signals; Multiple frequency conversion signals are accumulated to obtain an accumulated signal, and the test information of the object under test is calculated based on the accumulated signal.
9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing machine-executable instructions that can be executed by the processor to implement the encoderless detection method according to any one of claims 1-7.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the encoderless detection method as described in any one of claims 1-7.