CN218587298U

CN218587298U - Newspaper device based on speech recognition

Info

Publication number: CN218587298U
Application number: CN202222095275.0U
Authority: CN
Inventors: 关心如; 徐奥; 王振众
Original assignee: Advanced Institute of Information Technology AIIT of Peking University; Hangzhou Weiming Information Technology Co Ltd; Hangxiao Steel Structure Co Ltd
Current assignee: Advanced Institute of Information Technology AIIT of Peking University; Hangzhou Weiming Information Technology Co Ltd; Hangxiao Steel Structure Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-03-07
Anticipated expiration: 2032-08-09

Abstract

The utility model relates to a reporting device based on voice recognition, wherein a voice acquisition module and a voice output module in the device are both connected with a main operation module, and a voice recognition conversion module is respectively connected with the main operation module and a data output module; the voice acquisition module is used for acquiring a sound signal and converting the sound signal into a digital audio signal; the main operation module is used for transmitting the digital audio signal to the voice recognition conversion module; the voice output module is communicated with the voice recognition conversion module and used for receiving the feedback instruction and content and outputting the feedback instruction and content in a voice form; the voice recognition conversion module is used for recognizing the digital audio signal, extracting and verifying the newspaper worker information, and feeding back a verification result to the voice output module; and the data output module is used for outputting the work reporting information to an external management system. Based on this, realize comprehensive, in time obtaining the production data in the steel construction production water line.

Description

Newspaper device based on speech recognition

Technical Field

The utility model relates to a computer technology field especially relates to a report worker device based on speech recognition.

Background

The fine management of the steel structure production plant needs to depend on comprehensive and timely production data. However, due to the non-standardization of the building steel members, the huge investment of the automatic production line and the like, the automation degree of most steel structure production factories is low, and the manual filling mode is still adopted for reporting workers at present. Production data are filled manually, the management granularity is generally specific to days, real-time data collection cannot be achieved, and meanwhile the problems of high error rate, poor effectiveness and the like exist. Some factories can attach the work order information to the finished steel components in the form of bar codes, so as to realize the management of finished products, but the technology is not suitable for the management of work-in-process products.

Therefore, how to comprehensively and timely acquire production data in the steel structure production line in a non-automatic steel structure production line so as to realize fine management of a steel structure production factory is a problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a report worker device based on speech recognition for solve unable real-time among the prior art, comprehensive production data's that acquires the steelwork problem, realize comprehensively, in time acquire the production data in the steel construction production water line, realize steel construction production plant's the fine-grained management.

A newspaper worker device based on voice recognition, wherein a part or all of modules of the device form a wearable device, and the device comprises: the voice recognition and conversion device comprises a voice acquisition module, a voice output module, a main operation module, a voice recognition and conversion module and a data output module; the voice acquisition module and the voice output module are both connected with the main operation module, and the voice recognition conversion module is respectively connected with the main operation module and the data output module; the voice acquisition module is used for acquiring a sound signal containing work reporting information and converting the sound signal into a digital audio signal; the main operation module is used for supplying power, responding to user operation to execute corresponding instructions, and transmitting digital audio signals from the voice acquisition module to the voice recognition conversion module; the voice output module is communicated with the voice recognition conversion module through a main operation module, and is used for receiving the instruction and the content fed back by the voice recognition conversion module and outputting the fed instruction and the content to a user in a voice form; the voice recognition conversion module comprises a voice recognition unit, a work reporting information verification unit and a data conversion unit, the voice recognition unit is used for recognizing digital audio signals from the voice acquisition module and extracting work reporting information, the work reporting information verification unit verifies the work reporting information and feeds a verification result back to the voice output module through the main operation module, and the data conversion unit is used for converting the work reporting information into a preset format.

In one embodiment, the voice acquisition module, the voice output module and the main operation module form a wearable device; the voice recognition conversion module and the data output module are deployed on a remote server.

In one embodiment, the voice acquisition module comprises two throat microphones, the two throat microphones are respectively positioned at two ends of the arc-shaped connecting beam and are connected with the main operation module through flexible wires; the arc-shaped connecting beam is used for connecting the throat microphones and is adjusted through the arc-shaped connecting beam overlapping buckle, so that the two throat microphones are respectively fixed on two sides of the vocal cords of the neck; the voice output module comprises an ear-hanging type earphone and is connected with at least one of the two throat microphones through a soft wire.

In one embodiment, the work report information verification unit includes a work report information matching unit and a work report result feedback unit, and the work report information matching unit is used for being connected with the work report result feedback unit:

the work reporting information matching unit is used for comparing the work order information in the work reporting information with the work order information of the work reporting user in the external management system and outputting a comparison result to the work reporting result feedback unit;

the work report result feedback unit is used for feeding back the success of work report under the condition that the work order information in the work report information is matched with the work order information of the work report user in the external management system; and the report server is used for feeding back the report failure under the condition that the work order information in the report information is not matched with the work order information of the report user in the external management system.

In one embodiment, the main operation module comprises a power supply unit and a control circuit board, and the control circuit board comprises a control unit and a communication unit; the power supply unit is used for supplying power to the newspaper device, the control unit responds to user operation to execute corresponding instructions, and the communication unit is used for transmitting digital audio signals from the voice acquisition module to the voice recognition conversion module.

In one embodiment, the main operation module further comprises an operation key, an LED indicator light and a vibration motor, and a control circuit board in the main operation module is connected with the operation key, the LED indicator light and the vibration motor.

In one embodiment, the operation key includes: a main key, an auxiliary key and a volume key; the main key is used for enabling the newspaper device to be in a standby state or awakening the newspaper device; the auxiliary key is used for re-listening to feedback instructions and contents or for abnormal alarm or in-plant communication; the volume key is used for adjusting the volume.

In one embodiment, the main operation module further comprises a housing for enclosing the power supply unit and the control circuit board; the operation key is positioned on the shell.

In one embodiment, the housing is a flat cylinder, the main key and the auxiliary key are both located on the round surface of the flat cylinder, and the volume key is located on the side surface of the flat cylinder.

In one embodiment, the power supply unit is a lithium battery.

Above-mentioned report worker device based on speech recognition, through adopting the speech acquisition module, the speech output module, the main operation module, speech recognition conversion module and data output module, realize through gathering pronunciation, the mode of discernment pronunciation confirms that report worker's data, and report worker success and failure through speech feedback, can make the user report worker through pronunciation, and to the steel construction production factory, the steel member is in process of production, the workman will often wear the protective equipment, characteristics such as both hands hold machinery, it establishes to be wearable equipment to report the worker, be favorable to the workman in time to report the worker to the goods, thereby can be timely acquire the report worker's data of goods, thereby make the production data in the steel construction production water line more comprehensive, be convenient for realize steel construction production factory's refined management. And the obtained work reporting information is verified, so that the accuracy of the obtained work reporting information is improved.

Drawings

FIG. 1 is a block diagram of a speech recognition based reporter apparatus in one embodiment;

fig. 2 is a schematic structural diagram of a newspaper worker device based on voice recognition in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in 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 invention and are not intended to limit the invention.

It is to be noted that technical terms or scientific terms used in the embodiments of the present disclosure should have a general meaning as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

For the sake of easy understanding, the technical terms related to the present invention are first explained.

(1) Throat microphone

The laryngeal mask is also called a laryngeal knot vibration earphone, is a noise-proof solid sound transmission earphone and conducts sound by using laryngeal knot vibration. The novel bicycle is particularly suitable for noisy occasions, such as riding motorcycles, shopping malls, disco and the like. It can be understood that the general communication system uses the loudspeaker based on the traditional pick-up principle, the received voice is converted by the sound wave transmitted by air, and the throat microphone uses the non-traditional pick-up method, the received voice is converted by the sound signal made by the flutter of the throat phonation system, and the noise of most external environment can be isolated because the voice is not transmitted by air. The utility model discloses in, the larynx wheat is arranged in gathering the newspaper worker information in the steel construction production mill.

(2) Piezoelectric ceramic piece

The piezoelectric ceramic piece is an electronic sound producing element, a piezoelectric ceramic dielectric material is placed between two copper round electrodes, and when an alternating current audio signal is connected to the two electrodes, the piezoelectric piece can vibrate according to the magnitude frequency of the signal to produce corresponding sound.

(3) Article of manufacture

An article is understood to mean a component of a product, for example a pen, comprising a nib, a barrel and an ink. Therefore, in the production process of one pen, the product formed by only completing the manufacturing process of one pen point, one pen tube or some ink can be called as a product. The utility model discloses in, an off-the-shelf steel construction can comprise at least one steel member goods.

(4) Work order information

The work order is a detailed production process, which is a real reaction of the production process. The work order information may include: the production line, the work stations, the production task data and other work order data, wherein the production task data can comprise the number of the products to be produced and the labels of the products to be produced; other work order data may include, for example, work order material requisites, work order warehousing, number of articles produced, number of products produced, etc.

It can be understood that, among the steel construction production factory, because the size and the size of each steel member all probably are different, consequently not good batch production, the cost of the automation line construction that consequently corresponds is higher to because in the steel member production process, the workman will wear protective equipment, both hands often and hold the instrument, therefore inconvenient through both hands to report worker data and take notes. Consequently, to in most steel construction manufacturing plant non-automation line at present, can not in time report the problem of the goods production data of steel member with comprehensively, provide the utility model discloses a report worker device based on speech recognition.

The following describes the reporting device based on voice recognition with reference to the drawings.

Fig. 1 is a schematic block diagram of a newspaper worker device based on speech recognition provided by the present invention. It is understood that some or all modules of the voice recognition-based reporter apparatus constitute a wearable device. As shown in fig. 1, the utility model provides a newspaper device based on speech recognition includes: the system comprises a voice acquisition module 110, a voice output module 120, a main operation module 130, a voice recognition and conversion module 140 and a data output module 150; the voice collecting module 110 and the voice outputting module 120 are both connected to the main operating module 130, and the voice recognition and conversion module 140 is respectively connected to the main operating module 130 and the data outputting module 150.

The voice acquisition module 110 is configured to acquire a sound signal containing work reporting information, and convert the sound signal into a digital audio signal; the main operation module 130 is used for supplying power, responding to user operation to execute corresponding instructions, and transmitting the digital audio signal from the voice acquisition module 110 to the voice recognition conversion module; the voice output module 120 is in communication with the voice recognition and conversion module 140 through the main operation module 130, and is configured to receive the instruction and the content fed back by the voice recognition and conversion module 140, and output the fed-back instruction and content to the user in a voice form; the voice recognition conversion module 140 comprises a voice recognition unit 1401, a work reporting information verification unit 1402 and a data conversion unit 1403; the voice recognition unit 1401 is used for recognizing a digital audio signal from a voice acquisition module and extracting employee information; the work reporting information checking unit 1402 checks the work reporting information and feeds a checking result back to the voice output module through the main operation module; the data conversion unit 1403 is configured to convert the reporting information into a preset format.

The external management system includes, but is not limited to, a production management system such as a Material Requirement Planning (MRP), an Enterprise Resource Planning (ERP), and a constraint-based production management system (TOC). Accordingly, the preset format is a data storage format satisfying any one of the above-described external management systems.

Specifically, the voice capture module 110 may convert the sound signal into a digital audio signal through audio encoding and decoding.

It is understood that the voice collecting module 110 can collect the voice signal corresponding to the reporter voice from the staff of the steel structure production plant.

It can also be understood that because in the steel structure production factory, the steel member is in the production process, and the workman will wear protective equipment, both hands often, consequently will report the frock design to wearable equipment to confirm to report the worker data through the mode of gathering pronunciation, discernment pronunciation, and report the worker success and failure through voice feedback, can reduce the operation complexity of reporting the worker device, be favorable to the workman in time to report the worker to the goods.

In one embodiment, as shown in fig. 1, the main operation module 130 includes a power supply unit 1301 and a control circuit board, where the control circuit board includes a control unit 1302 and a communication unit 1303; the power supply unit 1301 is configured to supply power to the speech recognition device, the control unit 1302 executes a corresponding instruction in response to a user operation, and the communication unit 1303 is configured to transmit a digital audio signal from the audio acquisition module 110 to the speech recognition conversion module 140.

The operation key is used for starting a corresponding program by a user. The LED indicator light and the vibration motor are used for reminding of receiving new information.

In one embodiment, the operation keys may include: a main key, an auxiliary key and a volume key; the main key is used for enabling the reporting device to be in a standby state or awakening the reporting device; the auxiliary key is used for re-listening to feedback instructions and contents or for abnormal alarm or in-plant communication; the volume key is used for adjusting the volume.

In one embodiment, the housing is a flat cylinder, the main key and the auxiliary key are both located on the round surface of the flat cylinder, and the volume key is located on the side surface of the flat cylinder. In particular, the shape and position of the housing and the operating keys can be referred to fig. 2.

Specifically, the use method of the main key and the auxiliary key may be: continuously pressing the main key for no more than a first preset time to enable the alarm device to be in a standby state; if the main key is continuously pressed for more than a first preset time, awakening the work reporting device; and if the auxiliary key is continuously pressed for no more than second preset time, the feedback information is listened again, and if the auxiliary key is continuously pressed for no more than second preset time, abnormal alarm or in-plant communication is carried out.

the work reporting result feedback unit is used for feeding back the success of work reporting under the condition that the work order information in the work reporting information is matched with the work order information of the work reporting user in the external management system; and the report server is used for feeding back the report failure under the condition that the work order information in the report information is not matched with the work order information of the report user in the external management system.

Specifically, the account of the work reporting device may be bound to work order information of the work reporting user in the external management system, so that the work order information matching unit compares the work order information in the work reporting information with the work order information of the work reporting user in the external management system. And then, the newspaper worker information matching unit checks and screens the text recognition result according to a preset check rule to extract effective newspaper worker information. The preset check rule is that the work order information in the text recognition result is matched with the work order information of an external management system, and the work order information matched with the work order information in the text recognition result can be found, so that the work reporting success is determined; otherwise, determining that the reporting of the labor fails. Wherein, the work order information may include: production line, station, number of products to be produced, label of the products to be produced and the like.

It can be understood that the account of the work reporting device is bound with the work order information of the work reporting user in the external management system, so that the work reporting information reported by the user can be matched with the work order information of the work reporting user in the external management system, and the work reporting information can be verified.

In order to facilitate understanding of the above verification process for the newspaper worker information, the verification process for the newspaper worker information is described below with reference to an example. Illustratively, when a worker finishes welding of a work order on a certain working section, such as 2 sections of welding, say "BL05, complete", after the reporting device based on voice recognition receives "BL05," the corresponding voice information recognizes the work order number "BL05" and the operation instruction "complete", retrieve the work order of the account number corresponding to the reporting device issued by the external management system, if the work order number "BL05" can be retrieved, execute a work order entry command, send a new piece of work order data to the external management system, and give a voice prompt of "success in work" to the user through the voice output module; if the work order information sent to the account corresponding to the work reporting device does not contain 'BL 05', the fact that the work reporting is wrong or the voice recognition is wrong is indicated, and a voice prompt of 'failure in work reporting and please report work again' is fed back to the user.

It can be understood that the accuracy of the obtained work reporting information is improved by verifying the work reporting information.

The utility model provides a report worker's device based on speech recognition, through adopting the voice acquisition module, the speech output module, main operating module, speech recognition conversion module and data output module, realize through gathering pronunciation, the mode of discernment pronunciation confirms to report worker's data, and report worker's success and failure through speech feedback, can make the user report worker through pronunciation, and to in the steel construction production plant, the steel member is in process of production, the workman will wear the protective equipment often, both hands hold characteristics such as machinery, it is wearable equipment to report the frock design, be favorable to the workman in time to report worker to the goods, thereby can be timely acquire the report worker's data of goods, thereby make the production data in the steel construction production water line more comprehensive, be convenient for realize steel construction production plant's the fine-grained management. And the obtained work reporting information is verified, so that the accuracy of the obtained work reporting information is improved.

As before, the utility model provides a partial or whole module can constitute wearable equipment in the newspaper device based on speech recognition. Therefore, in one embodiment, the voice acquisition module, the voice output module and the main operation module form a wearable device for a user to carry; the speech recognition translation module and the data output module may be deployed on a remote server.

Fig. 2 is an exemplary diagram of a wearable device. The wearable device shown in fig. 2 is composed of a voice acquisition module, a voice output module, and a main operation module. As shown in fig. 2, the wearable device includes: a left throat microphone 201, a right throat microphone 202, an ear-hanging earphone 203, an auxiliary button 204, a main button 205, an LED indicator light 206, a volume key 207, an arc-shaped connecting beam lap buckle 208 and an arc-shaped connecting beam 209. The left throat microphone 201 and the right throat microphone 202 correspond to the voice acquisition module 110. The ear-hook type earphone 203 may correspond to the voice output module 120 above. The auxiliary key 204, the main key 205, the LED indicator 206, and the volume key 207 are part of the above main operation module 130, and may be regarded as hardware modules of the main operation module 130 that can be externally viewed. Arc tie-beam overlap joint knot 208 and arc tie-beam 209 are used for connecting voice acquisition module, speech output module and main operating module, make the user can dress, conveniently gather the voice signal and feed back to the voice prompt that the user reported the worker success or failed.

As shown in fig. 2, two throat microphones, a left throat microphone 201 and a right throat microphone 202, are respectively located at two ends of the arc-shaped connecting beam 209 and connected to the main operation module 130 through flexible electric wires; the arc-shaped connecting beam 209 is used for connecting the left larynx mic 201 and the right larynx mic 202, and the arc-shaped connecting beam 209 is adjusted through the arc-shaped connecting beam overlapping buckle 208 to enable the two larynx mics to be fixed on two sides of the vocal cords of the neck respectively; an in-ear headphone 203 is connected to the right throat microphone 202 by a flexible wire.

Wherein, the throat microphone can be a piezoelectric ceramic piece. It can be understood that most of noises can be filtered by the aid of the throat microphones in a noisy factory environment, clear sound signals are collected, and accordingly work reporting data can be acquired conveniently and subsequently according to sound information. And connect arc tie-beam overlap joint knot and arc tie-beam through the arc, make whole equipment hang on the neck to user's both hands have been liberated.

It is understood that the main operation module 130 further includes a power supply unit, a control circuit board, and a vibration motor therein. Specifically, the detailed content may refer to the related description in fig. 1, and is not repeated here for brevity. Wherein, the power supply unit may be a lithium battery. It can be understood that the lithium battery is small in size, high in voltage and high in energy density, so that the lithium battery is adopted as a power supply to supply power to the reporting device, and a user can conveniently wear the reporting device.

It can be further understood that fig. 2 only shows a schematic diagram of a wearable device composed of a voice acquisition module, a voice output module, and a main operation module, and in an actual application process, part of the structure of fig. 2 may be adjusted. For example, the ear-hook type earphone 203 may also be connected to the left throat microphone 201 through a flexible wire, or an ear-hook type earphone is added to the earphone of fig. 2, and the two ear-hook type earphones are respectively connected to the two throat microphones. For another example, the arched beams and the arched beam straps may be replaced with other attachment means. In addition, the positions, shapes and sizes of the auxiliary key 204, the main key 205, the LED indicator 206 and the volume key 207 may be different from those shown in fig. 2, which is not limited by the present invention.

Furthermore, can understand, the utility model provides a report worker device based on speech recognition not only can be applied to in the steel construction production factory, also can use with the similar application scene of steel construction production factory in, the utility model discloses do not limit to this. It can be understood that the utility model provides a report worker device based on speech recognition, except being applicable to steel construction production, still be applicable to other factory productions who are main with manual operation.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

It is to be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A newspaper worker device based on voice recognition is characterized in that part or all modules of the device form a wearable device, and the device comprises: the voice recognition and conversion system comprises a voice acquisition module, a voice output module, a main operation module, a voice recognition and conversion module and a data output module; the voice acquisition module and the voice output module are both connected with the main operation module, and the voice recognition conversion module is respectively connected with the main operation module and the data output module; wherein, the first and the second end of the pipe are connected with each other,

the voice acquisition module is used for acquiring a sound signal containing work reporting information and converting the sound signal into a digital audio signal;

the main operation module is used for supplying power, responding to user operation to execute corresponding instructions, and transmitting digital audio signals from the voice acquisition module to the voice recognition conversion module;

the voice output module is communicated with the voice recognition conversion module through a main operation module, and is used for receiving the instruction and the content fed back by the voice recognition conversion module and outputting the fed instruction and the content to a user in a voice form;

the voice recognition conversion module comprises a voice recognition unit, a work reporting information verification unit and a data conversion unit, the voice recognition unit is used for recognizing digital audio signals from the voice acquisition module and extracting work reporting information, the work reporting information verification unit verifies the work reporting information and feeds a verification result back to the voice output module through the main operation module, and the data conversion unit is used for converting the work reporting information into a preset format;

and the data output module is used for outputting the work reporting information converted into the preset format to an external management system in real time.

2. The speech recognition-based reporter apparatus according to claim 1, wherein the speech acquisition module, the speech output module and the main operation module constitute a wearable device; the voice recognition conversion module and the data output module are deployed on a remote server.

3. The voice recognition-based reporter device according to claim 2, wherein the voice collecting module comprises two throat microphones respectively located at two ends of the arc-shaped connecting beam and connected to the main operation module through flexible wires; the arc-shaped connecting beam is used for connecting the throat microphones and is adjusted through the arc-shaped connecting beam overlapping buckle, so that the two throat microphones are respectively fixed on two sides of the vocal cords of the neck; the voice output module comprises an ear-hanging type earphone and is connected with at least one of the two throat microphones through a soft wire.

4. The newspaper worker device based on voice recognition as recited in claim 1, wherein the newspaper worker information checking unit comprises a newspaper worker information matching unit and a newspaper worker result feedback unit, and the newspaper worker information matching unit is configured to be connected to the newspaper worker result feedback unit:

5. The voice recognition-based reporter device according to claim 3, wherein the main operation module includes a power supply unit and a control circuit board, and the control circuit board includes a control unit and a communication unit; the power supply unit is used for supplying power to the newspaper device, the control unit responds to user operation to execute corresponding instructions, and the communication unit is used for transmitting digital audio signals from the voice acquisition module to the voice recognition conversion module.

6. The voice recognition-based reporting device as claimed in claim 5, wherein the main operation module further comprises an operation key, an LED indicator light and a vibration motor, and a control circuit board in the main operation module is connected with the operation key, the LED indicator light and the vibration motor.

7. The speech recognition-based reporter apparatus of claim 6 wherein said operational buttons comprise: a main key, an auxiliary key and a volume key; the main key is used for enabling the newspaper device to be in a standby state or awakening the newspaper device; the auxiliary key is used for re-listening to feedback instructions and contents or for abnormal alarm or in-plant communication; the volume key is used for adjusting the volume.

8. The speech recognition-based reporter apparatus of claim 7 wherein the primary operating module further comprises a housing for enclosing the power supply unit and control circuit board; the operation key is positioned on the shell.

9. The speech recognition-based teller device of claim 8 wherein said housing is a flat cylinder, said primary key and said secondary key are located on the circular face of said flat cylinder, and said volume key is located on the side of said flat cylinder.

10. The voice recognition-based reporter apparatus according to any of claims 5 to 9, wherein the power supply unit is a lithium battery.