Power consumption analysis device of sewing machine

Abstract

To acquire productivity of power consumption reference with respect to a sewing machine.SOLUTION: A power consumption analysis device of a sewing machine includes: a power acquisition part for acquiring power of a sewing machine 100 which performs sewing; a motor speed acquisition part 33 for acquiring rotation speed of a sewing machine motor 101 which becomes a driving source of sewing of the sewing machine 100; and a productivity acquisition part 22 which calculates power consumption from the power acquired by the power acquisition part, and which acquires productivity of power consumption reference from the correlation between the power consumption and the rotation speed. Thereby, it becomes possible to evaluate sewing work of the sewing machine not based on productivity from the viewpoint of work efficiency but based on productivity from the view point of power consumption.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a power consumption analysis device for a sewing machine. [Background technology]

[0002] 2. Description of the Related Art A production system that acquires various information from a sewing machine and provides various support for improving sewing productivity has been conventionally known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-117815 Summary of the Invention [Problem to be solved by the invention]

[0004] However, such production systems are aimed solely at improving productivity from the standpoint of work efficiency, and do not take power consumption into consideration.

[0005] An object of the present invention is to measure the productivity of a sewing machine based on its power consumption. [Means for solving the problem]

[0006] The present invention provides a power consumption analysis device for a sewing machine, comprising: A power acquisition unit that acquires power for a sewing machine that performs sewing; a motor speed acquisition unit that acquires a rotation speed of a sewing machine motor that serves as a drive source for sewing the sewing machine; a productivity acquisition unit that calculates power consumption from the power acquired by the power acquisition unit, and obtains productivity based on power consumption from a correlation between the power consumption and the rotation speed; The present invention is characterized by comprising: Effect of the Invention

[0007] According to the present invention, it is possible to measure productivity based on power consumption. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing a state in which a power consumption analysis device for a sewing machine according to an embodiment of the present invention is connected to a sewing machine; [Diagram 2] 1 is a block diagram showing a configuration of a power consumption analysis device for a sewing machine; [Diagram 3] Figures 3(A) and 3(B) are graphs showing the change in the rotational speed of the sewing machine motor over time and the change in the sewing machine's power over time, with Figure 3(A) showing the case of rapid acceleration and Figure 3(B) showing the case of gradual acceleration. [Figure 4] 4 is a flowchart showing a series of processes of the power consumption analysis device for a sewing machine. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings, in which: FIG.

[0010] [sewing machine] As shown in FIG. 1, the sewing machine 100 that is the subject of power consumption analysis by the power consumption analysis device 10 includes at least a sewing machine motor 101 that serves as the drive source for the up and down movement of the sewing needle, a pulley 105 that rotates simultaneously with the output shaft of the sewing machine motor 101, a control device 102 that controls the operation of the sewing machine motor 101, a power supply circuit 103 that supplies power to the entire sewing machine, and a pedal 104 as an operating means with which the operator inputs the target sewing speed (the rotational speed of the sewing machine motor 101) with his or her foot.

[0011] The control device 102 of the sewing machine 100 executes feedback control on the sewing machine motor 101 so that the number of rotations corresponds to the amount of depression of the pedal 104. For this reason, the sewing machine motor 101 is provided with an encoder (not shown), and the change in the number of rotations (rotation angle) of the output shaft of the sewing machine motor 101 is constantly input from the encoder to the control device 102. This allows the control device 102 to obtain the shaft angle, rotation speed, and rotation acceleration of the sewing machine motor 101.

[0012] The power supply circuit 103 receives power from an alternating current power source AC via a power cable 106, and supplies the necessary power to each part of the sewing machine 100.

[0013] [Power consumption analyzer] FIG. 2 is a block diagram showing the configuration of the power consumption analysis device 10. As shown in FIG. The power consumption analysis device 10 has a microcontroller 20, a current detection unit 31, a voltage detection unit 32, an interface 33 for making a wired connection to the control device 102 of the sewing machine 100, a wireless communication unit 34 for performing wireless communication with the outside, and a memory unit 35 for storing various programs and data.

[0014] The power consumption analysis device 10 is provided between the power supply circuit 103 and the power cable of the sewing machine 100 described above, midway through the power cable 106, or between the power cable 106 and the alternating current power source AC, and the current detection unit 31 detects the value of the current flowing through the power cable 106, and the voltage detection unit 32 detects the voltage value in the power cable 106.

[0015] The interface 33 is an interface equipped with a connector for transmitting and receiving signals from the outside. For example, in a case where sewing machine 100 has a connector for communicating with the outside and has a function for transmitting and receiving predetermined data by connecting a communication cable, it can be used to connect the communication cable to power consumption analysis device 10. In this case, interface 33 is also configured to have a connector for connecting a communication cable. In this embodiment, the interface 33 is used to acquire data on the shaft angle, rotational speed, and rotational acceleration of the sewing machine motor 101 detected by an encoder in the sewing machine 100. In this case, the interface 33 functions as a "motor speed acquisition unit."

[0016] There are cases where the sewing machine 100 does not have a function for communicating with the outside. In that case, as illustrated in Fig. 1, a detection device 36 may be used that detects the rotation speed of the sewing machine motor from a pulley 105, which is a member that rotates outside the sewing machine 100 in synchronization with the rotation of the sewing machine motor 101. The detection device 36 includes, for example, a detection body that abuts against the outer circumferential surface of the pulley 105 and rotates together with the pulley 105, and a sensor that detects the rotation angle of the detection body, such as an encoder, a tachometer, a potentiometer, or a resolver. The interface 33 receives a detection signal from the sensor of the detection device 36. In this case, the interface 33 and the detection device 36 function as a "motor speed acquisition unit."

[0017] The wireless communication unit 34 is for the microcomputer 20 to communicate information with the outside of the device. The wireless communication unit 34 is, for example, a communication device that transmits and receives various commands and information to and from other information processing terminals and sewing machines having information processing functions through a predetermined communication network based on a predetermined wireless communication standard. The communication networks used may include, for example, a mobile communication network that terminates at a base station, a satellite communication network that uses communication satellites in the sky, a short-range communication network that complies with protocols such as WiFi or Bluetooth (registered trademark), an Internet communication network, etc. If the sewing machine 100 is equipped with a wireless communication device, data on the shaft angle, rotation speed, and rotation acceleration of the sewing machine motor 101 may be acquired from the wireless communication unit 34 instead of the above-mentioned interface 33. In this case, the wireless communication unit 34 functions as the "motor speed acquisition unit."

[0018] The storage unit 35 is a non-volatile storage device such as a HDD or semiconductor memory that stores various data and programs. The storage unit 35 stores, for example, a value of productivity based on power consumption calculated by the productivity acquisition unit 22, which will be described later.

[0019] [Microcomputer] The functions of the microcomputer 20 are realized by any hardware, software, or a combination of both. The microcomputer 20 is mainly configured with a microcomputer including, for example, a CPU, a RAM, a ROM, an I / O, and the like.

[0020] The microcomputer 20 has a functional configuration realized by software processing, which includes a power calculation unit 21, a productivity acquisition unit 22, a record processing unit 23, an image generation unit 24, a command generation unit 25, and a notification processing unit 26. Each of these functional configurations will now be described.

[0021] [Microcontroller: Power calculation section] The power calculation unit 21 calculates the power consumed by the sewing machine 100 during sewing based on the value of the current flowing through the power cable 106 of the sewing machine 100 detected by the current detection unit 31 and the voltage value in the power cable 106 detected by the voltage detection unit 32. As a result, the power calculation unit 21, the current detection unit 31, and the voltage detection unit 32 function as a "power acquisition unit."

[0022] [Microcomputer: Productivity Acquisition Unit] The productivity acquisition unit 22 obtains the productivity based on the power consumption from the correlation between the power consumption and the rotation speed of the sewing machine motor 101. The productivity based on the power consumption here refers to the amount of sewing work per a specified amount of power consumption, or the amount of power consumption per specified amount of sewing work. In the former case, the larger the value, the higher the productivity based on the power consumption, and in the latter case, the smaller the value, the higher the productivity based on the power consumption. The amount of sewing work is, for example, the total number of stitches (total number of revolutions of the sewing machine motor 101), the number of sewn pieces of workpieces, the number of sewing work completed for one predetermined process, etc. in a predetermined period of time.

[0023] Figures 3(A) and 3(B) are graphs showing the change over time in the rotational speed of the sewing machine motor 101 obtained through the interface 33 and the change over time in the power of the sewing machine 100 acquired by the power calculation unit 21, with Figure 3(A) showing the case where the pedal 104 is pressed abruptly, and Figure 3(B) showing the case where the pedal 104 is pressed gently.

[0024] The productivity acquisition unit 22 performs time integration on the acquired change over time in the rotation speed of the sewing machine motor 101 over a predetermined period, and calculates the total number of rotations of the sewing machine motor 101 (corresponding to the total number of stitches) during that period as the amount of sewing work. Furthermore, the productivity obtaining unit 22 performs time integration on the obtained change in power of the sewing machine motor 101 over time over the same predetermined period as the change in the rotation speed over time, and calculates it as the amount of power consumption for that period.

[0025] The productivity acquisition unit 22 calculates, for example, a ratio between the amount of sewing work and the amount of power consumption, for example, (amount of sewing work) / (power consumption), as the productivity based on the power consumption, and outputs the calculated productivity based on the power consumption. The calculated productivity based on the power consumption is recorded in the storage unit 35. In this case, the productivity based on the power consumption may be recorded in the storage unit 35 together with information on the date and time of measurement.

[0026] The "predetermined period" when integrating the rotation speed and the power may be a very short time of less than a second, or may be a certain work time of several tens of seconds to several minutes. It may also be the period until a series of sewing operations is completed. For example, it may be the period from when the sewing machine motor 101 starts from a stopped state until it returns to the next stopped state. The productivity acquisition unit 22 periodically calculates the power consumption-based productivity, but the calculation period does not need to be the same as the above-mentioned "default period." Therefore, for example, the power consumption-based productivity may be calculated by continuously repeating the calculation at a very short repetition period that is much shorter than the default period.

[0027] 3A shows a change in which the rotation speed of the sewing machine motor 101 increases abruptly when the pedal 104 is suddenly depressed, and the speed change increases and decreases repeatedly as the depression of the pedal 104 is eased. Also, there are cases where the speed increases and decreases repeatedly due to feedback control. On the other hand, when the pedal 104 is gently depressed as shown in FIG. 3B, the sewing machine motor 101 increases the rotation speed gently up to the target rotation speed. Since the increase in power consumption relative to a sudden increase in rotation speed is proportionally large, the productivity based on power consumption tends to decrease in an operation pattern such as that shown in FIG. 3(A).

[0028] [Microcontroller: Recording processing unit] For example, when the recording processing unit 23 is able to obtain operator identification information (ID, etc.) from the sewing machine 100 through the interface 33 or the wireless communication unit 34, the recording processing unit 23 records the power consumption standard productivity calculated by the productivity acquisition unit 22 in association with the operator identification information in the memory unit 35.

[0029] The source of the operator's identification information is not limited to the sewing machine 100. For example, the sewing machine 100 may be provided with a terminal 110, which is an information processing terminal, in order to collect data on productivity based on the work performance of the operator of the sewing machine 100. In this way, when an information processing terminal such as the terminal 110 is provided with the sewing machine 100, the operator's identification information may be obtained from the terminal 110. The operator's identification information may be obtained from the terminal 110 through either wired or wireless communication.

[0030] [Microcontroller: Image generation section] The image generating unit 24 generates display data for displaying, as an image, the change over time in the power calculated by the power calculating unit 21 and the change over time in the rotation speed of the sewing machine motor 101 acquired through the interface 33 . In this case, the display data may be image data of a graph showing the changes in power and rotation speed over time, or data showing the numerical values ​​of power and rotation speed that change over time to plot the changes in power and rotation speed over time. Since the power consumption analysis device 10 does not have a display means, it is not possible to display an image based on the display data generated by the image generation unit 24 on the power consumption analysis device 10. However, the display data may be sent to a surrounding information processing terminal capable of data communication to display the image. For example, if the sewing machine 100 is equipped with a display means such as a display panel, the display data may be transmitted to and displayed on the sewing machine 100. The display data may also be transmitted to and displayed on the above-mentioned terminal 110. Furthermore, the display data may also be transmitted to and displayed on another information processing terminal that can be connected to the terminal 110 through a network to which the terminal 110 belongs. Furthermore, the power consumption analyzing apparatus 10 may be configured to include a display means for displaying the data.

[0031] [Microcontroller: command generation section] The command generating unit 25 generates an operation limiting command for the sewing machine motor 101 for the purpose of improving productivity based on power consumption. As shown in FIGS. 3A and 3B described above, a sudden increase in the rotation speed of the sewing machine motor 101 is accompanied by a large amount of power consumption. Therefore, the command generating unit 25 sets an upper limit of the speed or the acceleration for the rotational speed of the sewing machine motor 101 acquired through the interface 33, etc. Then, when the rotational speed of the sewing machine motor 101 acquired through the interface 33, etc. exceeds the upper limit of the speed, or when the command generating unit 25 calculates the acceleration from the rotational speed of the sewing machine motor 101 acquired through the interface 33, etc. and the calculated value exceeds the upper limit of the acceleration, the command generating unit 25 may input, to the control device 102 of the sewing machine 100, a command to reduce the rotational speed or the acceleration of the sewing machine motor 101, if the command generating unit 25 is able to communicate with the sewing machine 100 through the interface 33 wireless communication unit 34. On the other hand, in the case where the sewing machine 100 is configured not to be able to communicate with the power consumption analysis device 10, when the rotation speed or acceleration of the sewing machine motor 101 exceeds the upper limit, a message indicating that the rotation speed should be reduced and an appropriate value for the rotation speed or acceleration (for example, the above-mentioned upper limit value or a value obtained by subtracting a specified value from the above-mentioned upper limit value) may be obtained and displayed on an external information processing terminal capable of data communication, such as the above-mentioned terminal 110 or another information processing terminal capable of communication with the terminal 110. In addition, in the case where the power consumption analysis device 10 is provided with a display means, the display means may be used to display the information.

[0032] The power consumption analysis apparatus 10 may have an input means for setting the numerical value of the upper limit of the speed or the upper limit of the acceleration. Furthermore, the command generating unit 25 may be configured to have both an upper limit value for speed and an upper limit value for acceleration, and to monitor both the rotation speed and acceleration of the sewing machine motor 101. Alternatively, the command generating unit 25 may be configured to have only one of an upper limit value for speed and an upper limit value for acceleration, and to monitor only one of the rotation speed and acceleration of the sewing machine motor 101.

[0033] [Microcomputer: Notification processing unit] The notification processing unit 26 judges whether or not the value of the productivity based on the power consumption standard, which is periodically obtained by the productivity obtaining unit 22, is appropriate, and performs notification processing if an abnormality is detected. As described above, the power consumption standard productivity values ​​periodically obtained by the productivity obtaining unit 22 are stored in the storage unit 35 in sequence. Therefore, the notification processor 26 may determine the suitability of the power consumption standard productivity value from past values. For example, when a certain number of power consumption standard productivity values ​​are accumulated, the notification processor 26 performs statistical processing on the accumulated values, such as averaging (or moving average processing), and sets the calculated value as a reference value for determining suitability. The notification processing unit 26 determines a lower limit for the productivity value of the power consumption standard that is periodically obtained by the productivity acquisition unit 22 by subtracting a predetermined value from the standard value, and judges the productivity value to be "appropriate" if it is equal to or above the lower limit, and "inappropriate" if it is below the lower limit.

[0034] If the notification processor 26 determines that the information is "inappropriate," it executes notification processing. The notification process may be executed on a surrounding information processing terminal capable of communication. For example, if the sewing machine 100 is equipped with a display means such as a display panel, a command to execute the notification process may be sent to the sewing machine 100 to display the occurrence of the decrease in productivity based on the power consumption standard. Also, a command to execute the notification process may be sent to the above-mentioned terminal 110 to display the occurrence of the decrease in productivity based on the power consumption standard. Furthermore, the occurrence of the decrease in productivity based on the power consumption standard may be displayed on other information processing terminals that can be connected to the terminal 110 through a network to which the terminal 110 belongs. Furthermore, the power consumption analysis device 10 may be configured to include an output unit that outputs an abnormality in a manner that can be perceived by humans, and may notify the occurrence of a decrease in productivity based on power consumption. The output unit that outputs an abnormality in a manner that can be perceived by humans may be an image display means, a lit lamp, or an audio output means.

[0035] [Power Consumption Analyzer Processing] The overall process performed by the microcomputer 20 of the power consumption analysis device 10 will be described with reference to the flowchart of FIG.

[0036] When the CPU of the microcomputer 20 detects the current and voltage from the power cable 106 of the sewing machine 100 and inputs the rotation speed of the sewing machine motor 101 from the interface 33 (step S1), it calculates the power of the sewing machine 100 (step S3: power calculation unit 21).

[0037] Meanwhile, the CPU compares the rotation speed of the sewing machine motor 101 or the acceleration calculated from the rotation speed with a preset upper limit (step S5: command generating unit 25). If the upper limit is exceeded, a command to reduce the rotation speed or acceleration of the sewing machine motor 101 is input to the control device 102 of the sewing machine 100 (step S7). Also, a message indicating that the rotation speed should be reduced or an appropriate value for the rotation speed or acceleration may be displayed.

[0038] Next, the CPU generates display data for displaying an image of the change over time in the rotation speed of the sewing machine motor 101 and the change over time in the power of the sewing machine 100 (step S9: image generating unit 24). The display data is recorded in the storage unit 35, and when the display destination has been determined, the display data is transmitted.

[0039] Next, the CPU integrates the calculated change over time in the electric power of the sewing machine 100 and the calculated change over time in the rotation speed of the sewing machine motor 101 to calculate the power consumption and the amount of sewing work (step S11: productivity acquisition unit 22). Furthermore, the CPU calculates the productivity based on the power consumption standard based on the calculated power consumption and sewing work volume (step S13: productivity acquisition section 22).

[0040] Furthermore, the CPU records the calculated productivity based on the power consumption in the storage unit 35 (step S15: recording processing unit 23). When recording, if information identifying the current operator of the sewing machine 100 is available, the calculated productivity based on the power consumption is recorded in the storage unit 35 in association with the information identifying the operator.

[0041] Next, the CPU compares the calculated productivity based on power consumption with a preset lower limit (step S17: notification processing unit 26). If it is below the lower limit, the CPU executes a process of notifying the occurrence of a decrease in the productivity based on power consumption of the sewing machine 100 (step S19: notification processing unit 26). If the notification destination has been determined, the CPU transmits a command to execute the notification process to the notification destination.

[0042] Furthermore, if the calculated power consumption standard productivity is equal to or greater than the lower limit, the CPU ends the process. The CPU repeatedly executes the processes from step S1 to step S15 in a short cycle.

[0043] [Technical Effects of the Embodiments] The power consumption analysis device 10 includes a productivity acquisition unit 22 that calculates the power consumption from the power of the sewing machine 100 based on the detection, and obtains the productivity based on the power consumption from the correlation between the power consumption and the rotation speed of the sewing machine motor 101. This makes it possible to evaluate the sewing performance of the sewing machine 100 in terms of productivity based on power consumption, rather than productivity based on work efficiency.

[0044] In addition, in the power consumption analysis device 10, the image generation unit 24 generates display data for displaying an image of the change in power over time in the sewing machine 100 and the change in the rotational speed of the sewing machine motor 101 over time, so that the display data makes it possible to easily understand the correlation between operations on the sewing machine 100 and the change in power.

[0045] Moreover, the power consumption analysis device 10 includes a record processing unit 23 that records the productivity obtained by the productivity obtaining unit 22 in association with specific information of the operator who operated the sewing machine 100. Therefore, it becomes possible to evaluate the handling of the sewing machine by a specific operator from the productivity based on the power consumption.

[0046] The power consumption analyzing device 10 also includes a command generating unit 25 that generates an operation limit command for the sewing machine motor 101, with the aim of improving productivity based on power consumption. Therefore, when the sewing machine 100 receives an operation restriction command and restricts the rotation speed or acceleration of the sewing machine motor 101, it is possible to reduce wasteful consumption of power.

[0047] Furthermore, the power consumption analysis device 10 includes a notification processing unit 26 that determines whether the productivity based on the power consumption standard obtained by the productivity acquisition unit 22 is appropriate and performs notification processing in the event of an abnormality, making it possible to make the occurrence of a decline in productivity known to the outside. This makes it possible to quickly take action to avoid a decline in productivity and to easily grasp the cause of the decline in productivity. In particular, if the power consumption analysis device 10 is equipped with an output section that outputs an abnormality in a manner that can be perceived by humans based on the alarm processing, the occurrence of a decline in productivity can be recognized on the spot, making it possible to take action to avoid the decline in productivity more quickly and to more clearly understand the cause of the decline in productivity.

[0048] Furthermore, if the power consumption analysis device 10 is configured to include a detection device 36 that detects the rotation speed of the sewing machine motor 101 from a pulley 105 that rotates outside the sewing machine 100 in synchronization with the rotation of the sewing machine motor 101, it is possible to detect the rotation speed of the sewing machine motor 101 without modifying the sewing machine 100 even if the sewing machine 100 does not have a function for outputting the rotation speed of the sewing machine motor 101 to the outside. This makes it possible to obtain the productivity based on power consumption for many sewing machines.

[0049] [others] Above, each embodiment of the present invention has been described. However, the present invention is not limited to the above-mentioned embodiments. For example, in the embodiments, a component integrally formed from a single member may be replaced with a component divided into a plurality of members and connected or fixed to each other. Also, a component formed by connecting a plurality of members may be replaced with a component integrally formed from a single member. In addition, the details shown in the embodiments can be appropriately changed without departing from the spirit of the invention.

[0050] Since the power consumption analysis device 10 is configured as an independent device from the sewing machine 100, it is possible to connect it externally to an existing sewing machine 100 and determine the productivity based on power consumption without making any modifications to the existing sewing machine 100. However, the present invention is not limited to this configuration, and the power consumption analysis device 10 may be incorporated as a part of the sewing machine 100.

[0051] Furthermore, the power consumption analysis device 10 may be disposed between the outlet of the alternating current power source AC and a plug provided at the end of the power cable 106 of the sewing machine 100. With this configuration, it becomes possible to more easily detect the current and voltage of the sewing machine 100 from outside the sewing machine 100. Furthermore, the power consumption analysis device 10 may be configured to detect the current and voltage of the sewing machine 100 from outside the cable sheath of the power cable 106 of the sewing machine 100 .

[0052] In the above embodiment, the sewing machine 100 is exemplified in which the rotation speed of the sewing machine motor 101 changes in response to pedal operation by the operator, but the present invention is not limited to this. For example, the power consumption analysis device 10 may be installed in a sewing machine that automatically sews at a predetermined target speed when a trigger to start sewing is input. In this case, it is possible to use the power consumption analysis device 10 when reviewing the setting value of the sewing machine's target speed, the gain value when performing feedback control, etc. [Explanation of symbols]

[0053] 10 Power consumption analyzer 20 Microcomputer 21 Power calculation unit (power acquisition unit) 22 Productivity Acquisition Department 23 Recording processing section 24 Image Generation Unit 25 Command generation section 26 Notification processing section 31 Current detection section (power acquisition section) 32 Voltage detection unit (power acquisition unit) 33 Interface (motor speed acquisition section) 34 Wireless Communication Section 35 Storage section 36 Detection Device 100 Sewing Machine 101 Sewing machine motor 102 Control device 103 Power supply circuit 104 Pedals 105 Pulley 106 Power Cable Terminal 110 AC alternating current power supply

Claims

1. A power acquisition unit that acquires power for a sewing machine that performs sewing; a motor speed acquisition unit that acquires a rotation speed of a sewing machine motor that serves as a drive source for sewing the sewing machine; a productivity acquisition unit that calculates power consumption from the power acquired by the power acquisition unit, and obtains productivity based on power consumption from a correlation between the power consumption and the rotation speed; A power consumption analysis device for a sewing machine comprising:

2. The sewing machine power consumption analysis device according to claim 1, further comprising an image generation unit that generates display data for displaying an image of the change over time in power acquired by the power acquisition unit and the change over time in rotational speed of the sewing machine motor acquired by the motor speed acquisition unit.

3. 2. The power consumption analysis device for a sewing machine according to claim 1, further comprising a record processing unit that records the productivity obtained by the productivity obtaining unit in association with specific information of an operator who operates the sewing machine.

4. 2. The power consumption analysis device for a sewing machine according to claim 1, further comprising a command generating unit configured to generate an operation restriction command for the sewing machine motor for the purpose of improving productivity based on the power consumption standard.

5. 2. The power consumption analysis device for a sewing machine according to claim 1, further comprising a notification processing unit that determines whether the productivity based on the power consumption standard obtained by the productivity obtaining unit is appropriate, and that performs a notification process when the productivity is abnormal.

6. 6. The power consumption analyzing device for a sewing machine according to claim 5, further comprising an output unit that outputs, based on the notification process, an abnormality in a manner that can be perceived by a human being.

7. 2. The power consumption analysis device for a sewing machine according to claim 1, wherein the motor speed acquisition unit detects the rotation speed of the sewing machine motor from a member that rotates outside the sewing machine in synchronization with the rotation of the sewing machine motor.

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