阅读说明：本技术 针距检测方法、装置、设备和存储介质 (Method, device and equipment for detecting needle pitch and storage medium ) 是由 符志诚 余保记 徐永明 于 2019-11-28 设计创作，主要内容包括：本申请涉及一种针距检测方法、装置、设备和存储介质。其中,该方法包括：检测电信号,其中,电信号由感应器件感应缝纫机的传动部件的运动幅度得到,传动部件与缝纫机的机针具有相同的运动周期、且传动部件的运动幅度与缝纫机的针距值呈比例关系；判断电信号的特征值是否落入到参数表中的多个区间中的预设区间内,其中,多个区间中的每个区间一一对应于一个针距值；在判断到电信号的特征值落入到多个区间中的预设区间内的情况下,确定预设区间对应的针距值为缝纫机的针距值。通过本发明,解决了相关技术中存在无法准确地获取缝纫机的实际针距值的问题,提升了针距检测的准确性。(The application relates to a method, a device, equipment and a storage medium for detecting needle pitch. Wherein, the method comprises the following steps: detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation; judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one; and under the condition that the characteristic value of the electric signal is judged to fall into a preset interval in the plurality of intervals, determining the needle pitch value corresponding to the preset interval as the needle pitch value of the sewing machine. The invention solves the problem that the actual needle pitch value of the sewing machine cannot be accurately obtained in the related technology, and improves the accuracy of needle pitch detection.)

1. A method for detecting a needle pitch, comprising:

detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of a sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation;

judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one;

and under the condition that the characteristic value of the electric signal is judged to fall into the preset interval in the plurality of intervals, determining the needle pitch value corresponding to the preset interval as the needle pitch value of the sewing machine.

2. The method of claim 1, wherein the characteristic value comprises at least one of:

a maximum value, a minimum value of the electrical signal, a difference between the maximum value and the minimum value of the electrical signal.

3. The method of claim 1, wherein before determining whether the characteristic value of the electrical signal falls within a predetermined interval of a plurality of intervals in a parameter table, the method further comprises:

adjusting the actual stitch length value of one or more sewing machines to be a first stitch length value;

detecting a first electric signal under the first stitch length value, wherein the first electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device;

counting the characteristic value of the first electric signal of the one or more sewing machines to obtain a characteristic value interval corresponding to the first stitch length value;

and writing the first stitch length value and the characteristic value interval corresponding to the first stitch length value into the parameter table in an associated manner.

4. The method of claim 3, further comprising:

under the condition that the characteristic value of the electric signal is judged not to fall into any one of the intervals, judging whether the characteristic value of the electric signal is higher than the maximum endpoint value in the endpoints of the intervals;

and under the condition that the characteristic value of the electric signal is judged to be higher than the maximum endpoint value in the endpoint values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the maximum endpoint value is located as the needle pitch value of the sewing machine.

5. The method of claim 3, further comprising:

under the condition that the characteristic value of the electric signal is judged not to fall into any one of the intervals, judging whether the characteristic value of the electric signal is lower than the minimum endpoint value of the endpoints of the intervals;

and under the condition that the characteristic value of the electric signal is judged to be lower than the minimum end point value in the end point values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the minimum end point value is located as the needle pitch value of the sewing machine.

6. The method of claim 1, wherein detecting the electrical signal comprises:

the electric signal is generated by sensing the movement amplitude of a magnet arranged on the transmission component through a Hall sensor arranged near the transmission component.

7. The method of claim 1, wherein the transmission component comprises at least one of:

a tooth frame part of the feed dog, a tooth part of the feed dog and an end part of the feed shaft.

8. The method according to any one of claims 1 to 7, wherein after determining the stitch gauge value of the sewing machine, the method further comprises:

and adjusting the electric control parameters of the sewing machine according to the needle pitch value of the sewing machine.

9. A gauge detection apparatus, the apparatus comprising:

the detection module is used for detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation;

the judging module is used for judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one;

and the determining module is used for determining that the needle pitch value corresponding to the preset interval is the needle pitch value of the sewing machine under the condition that the characteristic value of the electric signal is judged to fall into the preset interval in the plurality of intervals.

10. A needle pitch detection device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 8 when executing the computer program.

11. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 8.

Technical Field

The present application relates to the field of sewing machine technology, and in particular, to a method, an apparatus, a device and a computer readable storage medium for detecting a needle pitch of a sewing machine.

Background

With the development of sewing machine manufacturing industry, the requirements for precision and intelligent control of sewing machine operation are higher and higher. In the sewing process, the actual needle pitch value of the sewing machine needs to be acquired for the purposes of automatically adjusting the needle pitch, controlling the length of the wire braid and other electric control parameters.

Disclosure of Invention

Based on the above, the present application provides a stitch length detection method, device, apparatus and computer readable storage medium to solve the problem in the related art that the actual stitch length value of the sewing machine cannot be accurately obtained.

In a first aspect, the present application provides a method for detecting a needle pitch, the method comprising: detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of a sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation; judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one; and under the condition that the characteristic value of the electric signal is judged to fall into the preset interval in the plurality of intervals, determining the needle pitch value corresponding to the preset interval as the needle pitch value of the sewing machine.

In one possible implementation, the characteristic value includes at least one of: a maximum value, a minimum value of the electrical signal, a difference between the maximum value and the minimum value of the electrical signal.

In one possible implementation manner, before determining whether the characteristic value of the electrical signal falls within a preset interval of a plurality of intervals in a parameter table, the method further includes: adjusting the actual stitch length value of one or more sewing machines to be a first stitch length value; detecting a first electric signal under the first stitch length value, wherein the first electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device; counting the characteristic value of the first electric signal of the one or more sewing machines to obtain a characteristic value interval corresponding to the first stitch length value; and writing the first stitch length value and the characteristic value interval corresponding to the first stitch length value into the parameter table in an associated manner.

In one possible implementation, the method further includes: under the condition that the characteristic value of the electric signal is judged not to fall into any one of the intervals, judging whether the characteristic value of the electric signal is higher than the maximum endpoint value in the endpoints of the intervals; and under the condition that the characteristic value of the electric signal is judged to be higher than the maximum endpoint value in the endpoint values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the maximum endpoint value is located as the needle pitch value of the sewing machine.

In one possible implementation, the method further includes: under the condition that the characteristic value of the electric signal is judged not to fall into any one of the intervals, judging whether the characteristic value of the electric signal is lower than the minimum endpoint value of the endpoints of the intervals; and under the condition that the characteristic value of the electric signal is judged to be lower than the minimum end point value in the end point values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the minimum end point value is located as the needle pitch value of the sewing machine.

In one possible implementation, detecting the electrical signal includes: the electric signal is generated by sensing the movement amplitude of a magnet arranged on the transmission component through a Hall sensor arranged near the transmission component.

In one possible implementation, the transmission component includes at least one of: a tooth frame part of the feed dog, a tooth part of the feed dog and an end part of the feed shaft.

In one possible implementation, after determining the stitch gauge value of the sewing machine, the method further comprises: and adjusting the electric control parameters of the sewing machine according to the needle pitch value of the sewing machine.

In a second aspect, the present application provides a gauge detection apparatus, the apparatus comprising: the detection module is used for detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation; the judging module is used for judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one; and the determining module is used for determining that the needle pitch value corresponding to the preset interval is the needle pitch value of the sewing machine under the condition that the characteristic value of the electric signal is judged to fall into the preset interval in the plurality of intervals.

In a third aspect, the present application provides a gauge detection apparatus comprising: the device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the needle distance detection method when executing the computer program.

In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the stitch length detection method described above.

According to the stitch length detection method, the stitch length detection device, the stitch length detection equipment and the computer readable storage medium, the electric signal is detected, wherein the electric signal is obtained by sensing the motion amplitude of the transmission part of the sewing machine through the sensing device, the transmission part and the needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the stitch length value of the sewing machine are in a proportional relation; judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in a parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one; under the condition that the characteristic value of the electric signal falls into the preset interval in the multiple intervals, the needle pitch value corresponding to the preset interval is determined to be the needle pitch value of the sewing machine, the problem that the actual needle pitch value of the sewing machine cannot be accurately obtained in the related art is solved, and the accuracy of needle pitch detection is improved.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a flow chart of a method for detecting a needle pitch according to an embodiment of the present application;

FIG. 2 is a diagram illustrating characteristic values of a voltage signal according to an embodiment of the present disclosure;

FIG. 3 is a flowchart illustrating a method for obtaining a preset parameter table through testing according to an embodiment of the present disclosure;

FIG. 4 is a diagram illustrating a default parameter table according to an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a logic for stitch detection according to an embodiment of the present application;

FIG. 6 is a schematic view of an installation structure of a needle gauge detecting end of a sewing machine according to an embodiment of the present application;

FIG. 7 is a schematic view of an installation structure of a needle gauge detecting end of a sewing machine according to an embodiment of the present application;

FIG. 8 is a schematic view of an alternative needle gauge detecting end mounting structure of a sewing machine according to an embodiment of the present application;

FIG. 9 is another table of preset electrical control parameters provided in accordance with a preferred embodiment of the present application;

fig. 10 is a block diagram illustrating a structure of a needle pitch detecting apparatus according to an embodiment of the present disclosure;

fig. 11 is a schematic hardware structure diagram of a needle pitch detection device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the examples in this application, are within the scope of protection of this application.

In the present embodiment, a method for detecting a needle pitch is provided. As shown in fig. 1, a flowchart of a method for detecting a needle pitch according to an embodiment of the present application is provided, where the flowchart includes the following steps:

step S102, detecting an electric signal, wherein the electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device, the transmission part and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission part and the needle pitch value of the sewing machine are in a proportional relation;

step S104, judging whether the characteristic value of the electric signal falls into a preset interval in a plurality of intervals in the parameter table, wherein each interval in the plurality of intervals corresponds to a needle pitch value one by one;

and S106, under the condition that the characteristic value of the electric signal is judged to fall into a preset interval in the plurality of intervals, determining the needle pitch value corresponding to the preset interval as the needle pitch value of the sewing machine.

Through the steps, when the needle distance detection end detects the electric signal of the sewing machine, the strength of the voltage signal is in a proportional relation with the size of the needle distance value, the electric control receives the electric signal and compares the electric signal with an electric control preset parameter table, and when the electric signal is judged to fall into a certain preset interval of a plurality of intervals, the needle distance value corresponding to the preset interval is determined. Because this application detects the gauge needle value through the motion range of induction elements response sewing machine's drive disk assembly, does not receive the interference of environmental factor such as dust, greasy dirt, can simply, detect the gauge needle fast, has solved the problem that exists the actual gauge needle value that can't accurately acquire sewing machine among the correlation technique, has promoted the accuracy that the gauge needle detected.

In the present embodiment, the needle pitch detecting end may be designed to have a direct proportional relationship or an inverse proportional relationship with the needle pitch value, and the application takes the direct proportional relationship as an example for description. The electrical signal may be a voltage signal or a current signal, and the present application takes the voltage signal as an example for description.

In one embodiment, the characteristic value of the voltage signal includes, but is not limited to, at least one of: a maximum value of the voltage signal, a minimum value of the voltage signal, a difference between the maximum value and the minimum value of the voltage signal. When the needle pitch is different, the timing of a certain position (referring to the timing of a certain position of the transmission member relative to the sensing device) or the maximum and minimum voltage values and the voltage difference value are different, and the embodiment will be described by way of illustration.

Fig. 2 is a schematic diagram of characteristic values of a voltage signal according to an embodiment of the present disclosure. Where Vmax1 denotes the maximum value of the voltage signal detected by the needle gauge detecting terminal when the sewing machine is at the D1 needle gauge, Vmin1 denotes the minimum value of the voltage signal detected by the needle gauge detecting terminal when the sewing machine is at the D1 needle gauge, and a difference δ V1 between the maximum value and the minimum value of the voltage signal is Vmax1-Vmin 1; similarly, Vmax2 represents the maximum value of the voltage signal detected by the needle pitch detecting terminal when the sewing machine is at the D2 needle pitch, Vmin2 represents the minimum value of the voltage signal detected by the needle pitch detecting terminal when the sewing machine is at the D2 needle pitch, and the difference δ V2 between the maximum value and the minimum value of the voltage signal is Vmax2-Vmin 2.

In one embodiment, as shown in fig. 3, a flowchart for obtaining a preset parameter table through testing according to an embodiment of the present application is provided, where the flowchart includes the following steps:

step S302, adjusting the actual stitch length value of one or more sewing machines to be a first stitch length value;

step S304, detecting a first electric signal under a first stitch length value, wherein the first electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device;

step S306, counting the characteristic values of the first electric signals of one or more sewing machines to obtain a characteristic value interval corresponding to the first stitch length value;

step S308, the first pin pitch value and the characteristic value interval corresponding to the first pin pitch value are associated and written into the parameter table.

Through the steps, the preset parameter table can be obtained through testing on a plurality of sewing machines, and specifically, as shown in fig. 4, the preset parameter table is a schematic diagram of the preset parameter table provided according to the embodiment of the application. The voltage signal value interval and the voltage signal difference interval form an association relation with the needle pitch, and the voltage signal value interval can be a maximum value interval of the voltage signal or a minimum value interval of the voltage signal. The parameter table is used as an electric control internal preset parameter table, and then when the sewing machine works, the needle distance detection end detects a voltage signal, and the needle distance is judged at the current needle distance without calculating the needle distance through a voltage value as long as the voltage signal is judged in which interval, so that the beneficial effect of a calibration process when the sewing machine is installed in a factory is eliminated.

In one embodiment, as shown in fig. 5, a schematic diagram illustrating a logic of a stitch length detection according to an embodiment of the present application includes the following steps:

step S502, starting sewing;

step S504, detecting a voltage signal at a needle pitch detection end;

step S506, outputting a current voltage signal V (or delta V);

step S508, the electric control judges the relation between the current voltage signal and the parameter table;

wherein 510 represents a specific implementation manner of the electronic control to determine the relationship between the current voltage signal and the parameter table, and compares the detected voltage signal value V (or the difference δ V of the voltage signal) with the interval in the preset parameter table with reference to the preset parameter table in fig. 4.

For example, whether V1 < V2 exists or not is judged, and under the condition that the current voltage signal V is judged to fall into a V1-V2 interval, the needle pitch value D1 corresponding to the V1-V2 interval is determined to be the needle pitch value of the current voltage signal V, namely the needle pitch value of the current sewing machine; under the condition that the current voltage signal V is judged not to fall into the interval V1-V2, whether V2) < V3 is judged, and under the condition that the current voltage signal V is judged to fall into the interval V2-V3, the needle pitch value D2 corresponding to the interval V2-V3 is determined to be the needle pitch value of the current voltage signal V, namely the needle pitch value of the current sewing machine; by analogy, under the condition that the current voltage signal V is judged not to fall into the interval V2-V3, the comparison is continued according to the parameter table until the needle pitch is output.

Or judging whether delta V1 is less than delta V2, and determining that the needle pitch value D1 corresponding to the delta V1-delta V2 interval is the needle pitch value of the current voltage signal delta V, namely the needle pitch value of the current sewing machine under the condition that the current voltage signal difference value delta V is judged to fall into the delta V1-delta V2 interval; under the condition that the current voltage signal difference value delta V is judged not to fall into a delta V1-delta V2 interval, judging whether delta V2 is less than delta V < delta V3 or not, and under the condition that the current voltage signal difference value delta V is judged to fall into a delta V2-delta V3 interval, determining a needle pitch value D2 corresponding to a delta V2-delta V3 interval as a needle pitch value of the current voltage signal delta V, namely a needle pitch value of the current sewing machine; by analogy, under the condition that the difference value delta V of the current voltage signal is judged not to fall into the interval delta V2-delta V3, the comparison is continued according to the parameter table until the needle pitch is output.

In the embodiment of the invention, if the parameter table is obtained in a statistical manner, each interval of the parameter table is a bounded interval, and the union of all the intervals in the parameter table is also the bounded interval. When the actual needle pitch value is measured according to the characteristic value of the electric signal generated by the motion amplitude of the transmission component, the actually measured characteristic value of the electric signal may exceed the union of all the intervals in the parameter table, so that the actual needle pitch value cannot be obtained by looking up the table.

In order to solve the above problem, in a preferred embodiment, in a case where it is determined that the characteristic value of the electric signal does not fall within any one of the plurality of intervals, it is determined whether the characteristic value of the electric signal is higher than a maximum endpoint value among endpoint values of the plurality of intervals; and under the condition that the characteristic value of the electric signal is judged to be higher than the maximum endpoint value in the endpoint values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the maximum endpoint value is located as the needle pitch value of the sewing machine. Specifically, when the voltage signal detected by the stitch length detecting end exceeds the range of the parameter table, if the actual detected voltage signal is greater than the maximum value of the parameter table, the output stitch length is output by the maximum value Dmax of the stitch length range, that is, V (or delta V) > Vmax (or delta Vmax), the output stitch length value Dmax is output.

In order to solve the above problem, in a preferred embodiment, in a case where it is determined that the characteristic value of the electric signal does not fall within any one of the plurality of intervals, it is determined whether the characteristic value of the electric signal is lower than a minimum end value among end values of the plurality of intervals; and under the condition that the characteristic value of the electric signal is judged to be lower than the minimum end point value in the end point values of the plurality of intervals, determining the needle pitch value corresponding to the interval where the minimum end point value is located as the needle pitch value of the sewing machine. Specifically, when the voltage signal detected by the needle pitch detection end exceeds the range of the parameter table, if the actual detection voltage signal is smaller than the minimum value of the range of the parameter table, the needle pitch is output according to the minimum value Dmin of the needle pitch range, namely V (or delta V) < Vmin (or delta Vmin), and the needle pitch Dmin is output.

By the mode, the defect that the actually measured characteristic value of the electric signal exceeds the union set of all the intervals in the parameter table, so that the needle pitch value cannot be obtained through query is overcome.

In one embodiment, the sensing device is preferably comprised of a hall sensor and a magnet. Wherein detecting the electrical signal comprises: an electrical signal is generated by a hall sensor disposed near the drive member sensing the amplitude of movement of a magnet disposed on the drive member. Compared with photoelectric encoders in the related art, the Hall sensor and the magnet have the advantages of strong environmental adaptability, dust resistance, oil stain resistance and the like.

In one embodiment, the transmission component comprises at least one of: a tooth frame part of the feed dog, a tooth part of the feed dog and an end part of the feed shaft.

Fig. 6 is a schematic view of an installation structure of a needle space detecting end of a sewing machine according to an embodiment of the present application, fig. 7 is a schematic view of an installation structure of a needle space detecting end of a sewing machine according to an embodiment of the present application, fig. 6 and 7 are schematic views of two different installation structures of a needle space detecting end of the same sewing machine, and the two embodiments will be described and explained with reference to fig. 6 and 7. As shown in fig. 6, the device for detecting the electrical signal, i.e., the needle space detecting end 601, is mounted on the left upper cover 602, which is fixed to the housing. As shown in fig. 7, a magnetic steel 702 (corresponding to the above-described magnet) is attached to the upper portion of the holder portion 701 of the feed dog. Preferably, the needle distance detection end 601 is internally provided with a hall sensor. In the process of forward and backward movement of the dental articulator, the needle pitch detection end 601 can continuously obtain the forward and backward voltage value signals of the dental articulator, and the voltage value range is in direct proportion to the needle pitch.

Fig. 8 is a schematic view of a mounting structure of a needle space detecting end of another sewing machine according to an embodiment of the present application, and the two embodiments will be described and explained with reference to fig. 8. As shown in fig. 8, the device for detecting electrical signals, i.e. the needle space detecting end 801, is installed on the casing, the hall sensor is installed inside the needle space detecting end 801, the magnetic ring 802 (equivalent to the above-mentioned magnet) is installed on the cloth feeding shaft of the sewing machine, and the hall sensor inside the needle space detecting end 801 can detect the position of the magnetic ring 802 in real time and convert it into a voltage value signal. The swing angle of the cloth feeding shaft is in direct proportion to the needle pitch, and the detection structure can convert the swing angle of the cloth feeding shaft into a voltage value signal in real time and feed the voltage value signal back to the electronic control unit.

In a preferred embodiment, after determining the stitch length value of the sewing machine, the method further comprises: and adjusting the electric control parameters of the sewing machine according to the needle pitch value of the sewing machine. Fig. 9 is another preset electrical control parameter table provided according to the preferred embodiment of the present application, which will be described and explained below with reference to fig. 9. Such as

As shown in fig. 9, when the needle pitch is obtained by comparing the voltage values or the voltage difference values, the electronic control parameters are adjusted, for example, related parameters of trimming are adjusted according to the current needle pitch value. Specifically, when the cloth passes through the front trimming sensor, the current sewing speed N is recorded in an electric control mode, meanwhile, the needle pitch D is combined, and a preset electric control parameter table is compared, so that the front trimming control parameter Tm can be automatically adjusted, and the front trimming control parameter Tm can be rapidly applied to the current sewing. The relationship between the needle pitch, the sewing speed and the front trimming control parameter value can be summarized through multiple tests. In addition, other parameters are similarly available.

In this embodiment, a needle pitch detection device is further provided, and the device is used to implement the above embodiments and preferred embodiments, which have already been described and are not described again. As used below, the term module may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 10 is a block diagram of a needle pitch detection device according to an embodiment of the present application, and as shown in fig. 10, the device includes:

the detection module 1002 is configured to detect an electrical signal, where the electrical signal is obtained by sensing a motion amplitude of a transmission component of the sewing machine by a sensing device, the transmission component and a needle of the sewing machine have the same motion period, and the motion amplitude of the transmission component and a needle pitch value of the sewing machine are in a proportional relationship;

a judging module 1004, coupled to the detecting module 1002, for judging whether the characteristic value of the electrical signal falls within a preset interval of a plurality of intervals in the parameter table, wherein each of the plurality of intervals corresponds to a needle pitch value one by one;

the determining module 1006, coupled to the determining module 1004, is configured to determine, if it is determined that the characteristic value of the electrical signal falls within a preset interval of the multiple intervals, a gauge value corresponding to the preset interval as a gauge value of the sewing machine.

In one embodiment, the apparatus further comprises: the adjusting module is used for adjusting the actual stitch length value of one or more sewing machines to be a first stitch length value; the first detection module is used for detecting a first electric signal under a first stitch length value, wherein the first electric signal is obtained by sensing the motion amplitude of a transmission part of the sewing machine by a sensing device; the statistical module is used for counting the characteristic values of the first electric signals of one or more sewing machines to obtain a characteristic value interval corresponding to the first stitch length value; and the writing module is used for associating the first pin pitch value and the characteristic value interval corresponding to the first pin pitch value and writing the first pin pitch value and the characteristic value interval into the parameter table.

In one embodiment, the apparatus further comprises: the first judgment module is used for judging whether the characteristic value of the electric signal is higher than the maximum endpoint value in the endpoint values of the multiple intervals or not under the condition that the characteristic value of the electric signal is judged not to fall into any one of the multiple intervals; the first determining module is used for determining the needle pitch value corresponding to the section where the maximum end point value is located as the needle pitch value of the sewing machine under the condition that the characteristic value of the electric signal is judged to be higher than the maximum end point value in the end point values of the plurality of sections.

In one embodiment, the apparatus further comprises: the second judging module is used for judging whether the characteristic value of the electric signal is lower than the minimum endpoint value in the endpoint values of the multiple intervals or not under the condition that the characteristic value of the electric signal is judged not to fall into any one of the multiple intervals; and the second determining module is used for determining the needle pitch value corresponding to the section where the minimum end point value is located as the needle pitch value of the sewing machine under the condition that the characteristic value of the electric signal is judged to be lower than the minimum end point value in the end point values of the plurality of sections.

In one embodiment, the apparatus further comprises: and the generating module is used for sensing the motion amplitude of the magnet arranged on the transmission component through a Hall sensor arranged near the transmission component to generate an electric signal.

In one embodiment, the apparatus further comprises: and the adjusting module is used for adjusting the electric control parameters of the sewing machine according to the needle pitch value of the sewing machine.

In addition, the needle pitch detection method of the embodiment of the present application described in conjunction with fig. 1 may be implemented by a needle pitch detection apparatus. Fig. 11 shows a hardware structure diagram of a needle pitch detection device provided in an embodiment of the present application.

The needle gauge detection device may comprise a processor 111 and a memory 112 storing computer program instructions.

Specifically, the processor 111 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.

Memory 112 may include mass storage for data or instructions. By way of example, and not limitation, memory 112 may include a Hard Disk Drive (HDD), a floppy Disk Drive, flash memory, an optical Disk, a magneto-optical Disk, tape, or a Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 112 may include removable or non-removable (or fixed) media, where appropriate. The memory 112 may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory 112 is a non-volatile solid-state memory. In a particular embodiment, the memory 112 includes Read Only Memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or a combination of two or more of these.

The processor 111 may implement any of the above described needle gauge detection methods by reading and executing computer program instructions stored in the memory 112.

In one example, the needle gauge detection device may also include a communication interface 113 and a bus 110. As shown in fig. 11, the processor 111, the memory 112, and the communication interface 113 are connected via the bus 110 to complete communication therebetween.

The communication interface 113 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present application.

The bus 110 includes hardware, software, or both to couple the components of the stitch detection device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 110 may include one or more buses, where appropriate. Although specific buses are described and shown in the embodiments of the application, any suitable buses or interconnects are contemplated by the application.

The needle pitch detection device may perform the needle pitch detection method in the embodiment of the present application based on the detected electrical signal data, thereby implementing the needle pitch detection method described in conjunction with fig. 1.

In addition, in combination with the stitch length detection method in the foregoing embodiments, the embodiments of the present application may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the stitch detection methods in the above embodiments.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.