JP2020074204A - Work management system - Google Patents

Abstract

To provide a method by which a tool sort of a power tool is made readable.SOLUTION: A work management system 10 comprises a management device 1 and plural power tools. In each of the plural power tools, a medium in which information of a tool sort of the power tool is recorded is installed. The management device 1 has a reading part which reads information of a tool sort from the medium. The management device 1 determines the tool sort read by the reading part as the tool sort of the power tool.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a work management system.

  Conventionally, in the work of tightening fastening parts such as bolts to a predetermined position of an object, a tightening tool and a tightening position management system provided with devices and mechanisms for preventing forgetting to tighten have been proposed. It is disclosed in Reference 1.

  The tightening position management system described in Patent Document 1 includes a torque wrench that is a tightening tool, and a management device that manages tightening position information.

  The torque wrench outputs the tightening torque for tightening the fastening parts to the management device by wireless communication. In addition, the torque wrench specifies the tightening position based on the signals output from the acceleration sensor, gyro sensor, and geomagnetic sensor when the torque wrench is moved, and manages the tightening position information indicating the tightening position. Output to the device. When receiving the tightening position information and the tightening torque output from the torque wrench, the management device manages the received tightening position information and the tightening torque.

JP, 2013-188858, A

  In a work site such as a factory or a construction site, a plurality of fastening tools are assigned to a plurality of workers respectively, and a plurality of workers use the fastening tools assigned to each of them according to the work process, and in parallel. Sometimes work is done. In such a work site, in order to manage the work performed by a plurality of workers, there has been a demand for acquiring the tool type of the tightening tool (power tool) used by each worker.

  The present invention has been made in view of the above problems, and an object thereof is to provide a work management system capable of reading the tool type of a power tool.

  A work management system according to an aspect of the present disclosure includes a management device and a plurality of power tools. Each of the plurality of power tools is provided with a medium in which information on the tool type of the power tool is recorded. The management device includes a reading unit that reads information on the tool type from the medium. The management device sets the tool type read by the reading unit as the tool type of the power tool.

  According to the work management system of the present invention, the tool type of the power tool can be read.

It is a block diagram of the work management system of an embodiment. It is a system configuration diagram of a work management system of the embodiment. It is explanatory drawing which showed typically an example of the power tool used for the work management system of embodiment. It is a flowchart which shows operation | movement of the power tool used for the work management system of embodiment. It is a flow chart which shows operation of a management device used for a work management system of an embodiment. It is a time chart explaining operation | movement of the work management system of embodiment.

  The present embodiment relates to a work management system and a management device, and more particularly to a work management system and a management device for managing the work content using a power tool.

(1.1) Overall Overview Hereinafter, the work management system and the management device of the present embodiment will be described with reference to the drawings. However, the configuration described below is merely an example of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design etc. within the scope not departing from the technical idea of the present invention.

  In the present embodiment, an example will be described in which the power tool managed by the management device is an electric tool. The work management system of the present embodiment is used to manage the work content of the tightening work using an electric tool for tightening a tightening component such as a bolt in each of a plurality of work processes. A work site where this work management system is used is a work site (a factory, a construction site, etc.) in which a worker performs work using a power tool according to a predetermined work process. For example, a power generation capacity is a megawatt class. The construction site of the solar power generation facility is assumed. At the construction site of such a photovoltaic power generation facility, the pedestals for installing the solar cell panels are arranged in a plurality of rows, and a plurality of solar cell panels are mounted on the gantry. Work to tighten the individual bolts is performed. In a solar power generation facility with a power generation capacity of megawatts, the number of solar cell panels used is from tens of thousands to hundreds of thousands, and the number of bolts for tightening work is also enormous. In this way, when a large number of tightening members need to be tightened, multiple workers should share the work, and each worker should use a power tool to perform the screw tightening work at a specified location. The work process is fixed. If multiple workers share the work, there is a high possibility that they will forget to do the screw tightening work, and there may be variations in the tightening force. There is a desire to control what has been done. Therefore, in the work management system of the present embodiment, the management device determines the work content of the tightening work from each of the plurality of power tools used in each work process (for example, the number of screw tightening works, the tightening torque in each work, and the like). ) Is configured to collect and accumulate.

  As shown in FIGS. 1 and 2, the work management system 10 of this embodiment includes a management device 1 and a plurality of electric tools 2 (2a to 2f). In the example of FIG. 2, the number of power tools 2 is 6, but the number of power tools 2 is not limited to 6 and may be any number according to the work content. In the following description, the power tools 2a, 2b, 2c, 2d, 2e, and 2f will be referred to when describing individual power tools, and the power tool 2 will be used when describing common to the six power tools 2a to 2f. Enter.

(1.2) Description of Power Tool In the present embodiment, the power tool managed by the management device 1 is the power tool 2, and the configuration of the power tool 2 will be described with reference to FIGS. 1 and 2. The power tool 2 is a power tool for a business operator used in, for example, a factory or a construction site. The electric power tool 2 is for performing a work of fastening a work target (for example, a solar cell panel or the like) to a mounted member (for example, a mount or the like) with a plurality of fastening members (for example, screws or bolts) according to a design drawing or a work instruction. Used for. An example of this type of electric tool 2 is an impact driver that tightens by rotating a tightening member and applying an impact force. The power tool 2 is not limited to an electric impact driver, and may be an electric impact wrench, or an electric drill driver or an electric torque wrench that does not give a striking force. Further, the power tool is not limited to the power tool 2, and may be, for example, a pneumatic power tool (for example, a driver or a nail driver) that uses a pneumatic pump as a power source and is driven by compressed air supplied from the pneumatic pump. However, a hydraulic power tool driven by hydraulic pressure supplied from a hydraulic source using a hydraulic pump as a power source may be used.

  The electric power tool 2 includes a control unit 21, a communication unit (second communication unit) 22, a storage unit 23, an operation unit 24, a driving unit 25, a measuring unit 26, a power supply unit 27, and a display lamp 29. Equipped with.

  Further, as shown in FIG. 3, the body 200 of the electric power tool 2 includes a tubular body portion 201 and a grip portion 202 that projects radially from the peripheral surface of the body portion 201. An output shaft 253 projects from one end side of the body portion 201 in the axial direction. The output shaft 253 is provided with a socket 254 to which a tip tool 256 (for example, a driver bit or the like) adapted to a tightening member to be worked is detachably attached. At one end (lower end in FIG. 3) of the grip portion 202, a battery pack 203 having a power source portion 27 housed in a resin case is detachably attached.

  The control unit 21 includes a microcomputer as a main hardware element. In the present embodiment, the microcomputer included in the control unit 21 executes the programs stored in the storage unit 23 to realize various functions included in the electric power tool 2. The circuit board 28 on which the circuits configuring the control unit 21 and the like are mounted is housed in the grip 202.

  The communication unit 22 is a communication module that performs short-range (about 10 m) wireless communication by a communication method that does not require a wireless license. This type of communication system includes a communication system based on the IEEE 802.15.1 standard standardized by the Institute of Electrical and Electronics Engineers, Inc. (IEEE). The communication unit 22 performs wireless communication with the management device 1 using this type of communication method. If the construction site is wider than the communication distance between the communication units 12 and 22, a relay machine that relays communication between the communication units 12 and 22 may be used.

  The storage unit 23 includes a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 23 stores a control program executed by the control unit 21. The storage unit 23 also stores information (tool type) such as identification information assigned to each power tool 2 and the type of each power tool 2 (for example, information including a manufacturer and a product number determined by the manufacturer). Information).

  The operation unit 24 has a trigger switch 241 provided on the grip 202. When the trigger switch 241 is operated, an operation signal having a magnitude proportional to the pull-in amount (operation amount) of the trigger switch 241 is input to the control unit 21.

  The drive unit 25 includes a motor 251 and a drive circuit that controls the rotation of the motor 251 according to a control signal input from the control unit 21. The rotation of the output shaft of the motor 251 is transmitted to the output shaft 253 via the impact mechanism 252. If the output torque is equal to or lower than the predetermined level, the impact mechanism 252 is configured to reduce the rotation of the output shaft of the motor 251 and transmit the decelerated rotation to the output shaft 253. When the output torque exceeds a predetermined level, the impact mechanism 252 is configured to apply a striking force to the output shaft 253 to screw in the screw or bolt to be worked. The motor 251 and the impact mechanism 252 are housed in the body 201.

  The measuring unit 26 measures the tightening force of the tightening member by the driving unit 25. The measuring unit 26 measures the torque applied to the output shaft 253 with the magnetostrictive torque sensor 255 attached to the output shaft 253, and obtains the tightening force from the measured value of the torque sensor 255. The measurement unit 26 measures the number of hits applied to the output shaft 253 by the impact mechanism 252 by measuring the vibration generated by the hit with a vibration sensor or detecting the hit sound generated by the hit with a microphone. The tightening force may be obtained by counting and counting the impact.

  The power supply unit 27 is housed in the battery pack 203. The power supply unit 27 includes a rechargeable battery, and the rechargeable battery in the power supply unit 27 is charged by connecting the battery pack 203 removed from the grip 202 to a charger. The power supply unit 27 supplies the electric power charged in the rechargeable battery to the electric circuit including the control unit 21 and the electric power required for the operation to the motor 251.

  The display lamp 29 is formed of a light emitting diode exposed on the surface of the body 200, and has, for example, a blue light emitting diode and a red light emitting diode.

(1.3) Management Device The management device 1 is a computer used by a site supervisor at a work site, and may be a mobile terminal (eg, tablet computer, smartphone, etc.) carried by the site supervisor, or in a site office or the like. It may be a personal computer installed.

  As illustrated in FIG. 1, the management device 1 includes a signal processing unit 11, a communication unit (first communication unit) 12, a storage unit 13, a display unit 14, and an operation unit 15. A bar code reader 3 (reading unit) is connected to the management device 1.

  The signal processing unit 11 is composed of, for example, a microcomputer. In the present embodiment, the signal processing unit 11 executes the programs stored in the storage unit 13 to implement various functions of the management device 1 (for example, the functions of the management unit 111).

  In each of the plurality of work processes, the management unit 111 causes the communication unit 12 to regularly or irregularly transmit a monitoring signal to the two or more power tools 2 used in the work process. Then, when the communication unit 12 cannot receive the response signal from at least one electric tool 2, the management unit 111 causes all of the two or more electric tools 2 used in the work process to transmit the work stop signal, and the electric power The tool 2 is disabled.

  Further, when the communication unit 12 receives the same number of registration request signals as the number of electric tools 2 used in the next work process before the start of the next work process, the management unit 111 receives the registration request signal from the communication unit 12. The power tool 2 of the transmission source of is transmitted a work permission signal, and the power tool 2 is brought into a usable state. If the communication unit 12 cannot receive the same number of registration request signals as the number of vehicles used in the next work process before the start of the next work process, the management unit 111 does not transmit the work permission signal from the communication unit 12. , The power tool 2 is disabled. Here, before the start of the next work process is, for example, at the start of the work of one day or when the work process is switched.

  The communication unit 12 is a communication module that performs short-distance wireless communication using the same communication method as that of the communication unit 22 of the power tool 2. In the present embodiment, the communication units 22 of the plurality of electric power tools 2 are registered as slaves in the communication unit 12 serving as a master, and wireless communication is performed between the communication units 12 and 22. In the work management system of the present embodiment, the management device 1 and the electric power tool 2 communicate with each other by a communication method that conforms to the IEEE802.15.1 standard. You can go. The communication method between the management device 1 and the power tool 2 is not limited to wireless communication, and wired communication may be used.

  The storage unit 13 includes a ROM and a RAM, and an electrically rewritable nonvolatile memory such as an EEPROM (Electrically Erasable and Programmable ROM). The storage unit 13 stores a program executed by the signal processing unit 11. In addition, the storage unit 13 stores the number of electric tools 2 used in each of the plurality of work processes. Here, the storage unit 13 may store, for each work process, the tool type of the power tool 2 used in each of the plurality of work processes and the number of units used for each tool type. In addition, the storage unit 13 also stores information on the work content collected from the power tool 2 used in the work process that has been performed. The program executed by the signal processing unit 11 may be provided in a state of being written in a recording medium such as an optical disk, a hard disk, or a semiconductor memory, or through an electric communication line such as the Internet or a mobile communication network. May be provided. The storage unit 13 may be a built-in memory or a memory card installed in a card slot included in the computer.

  The display unit 14 is a display device such as a liquid crystal display device or an OLED (Organic Light Emitting Diode) display device, and the display content is controlled by the signal processing unit 11.

  The operation unit 15 is, for example, an electrostatic or pressure-sensitive touch panel provided on a display device that constitutes the display unit 14. When the operation section 15 is touched, the operation section 15 outputs an operation signal corresponding to the operation content to the signal processing section 11. Here, “touching” the operation unit 15 includes an operation of touching with a finger of a hand and an operation of touching with an input pen or the like.

  Further, the information read by the barcode reader 3 is input to the signal processing unit 11. There are various tools as the tip tool 256 driven by the drive unit 25 of the electric tool 2, and the tip tool 256 has a label 31 (medium) on which a bar code representing the tool type is printed (a medium). 3). Here, the information of the tool type recorded by the barcode is, for example, information including at least the type of the tool (driver, socket, drill, etc.) and size. The signal processing unit 11 acquires, from the barcode reader 3, information obtained by reading the barcode of the label 31 provided on the tip tool 256 with the barcode reader 3. Although the barcode reader 3 is connected to the management device 1 in the present embodiment, a reading unit that reads the barcode is realized by the camera built in the management device 1 and the application software installed in the management device 1. May be done. Further, although the reading unit is the barcode reader 3 in the present embodiment, an RFID (Radio Frequency Identification) storing information indicating the tool type may be embedded in the tip tool 256. In this case, even if the reader device that reads information from the RFID tag in a non-contact manner is connected to the management device 1 and the signal processing unit 11 obtains the tool type information obtained by the reader device reading from the tip tool 256 from the reader device. Good.

(2) Description of Operation The operation of the work management system 10 of this embodiment will be described with reference to FIGS. 4 to 7.

  First, a registration process for registering the identification information of the power tool 2 used in the next work process in the management device 1 will be described. Below, the registration processing in the management device 1 will be described based on the flowchart of FIG. 4, and the registration processing in the electric power tool 2 will be described based on the flowchart of FIG.

  The registration processing in the management device 1 will be described based on the flowchart of FIG. The site supervisor operates the operation unit 15 of the management device 1 to select a work process to be started from a plurality of work processes, for example, at the start of a day or when the work process is switched, and then the management device 1 The operation mode is set to the registration mode (S11 in FIG. 4). The registration mode is to collect the information indicating the work content from the power tool 2 used in the next work process (selected work process), so that the management device 1 controls the power tool 2 used in the next work process. This is an operation mode to be associated (registered).

  When the operation mode of the management device 1 is set to the registration mode, the signal processing unit 11 reads from the storage unit 13 the number of electric tools 2 used in the work process (next work process) selected in S11.

  Further, the signal processing unit 11 activates an internal timer and waits for reception of a registration request signal transmitted from the electric power tool 2 until a predetermined time T2 elapses after switching to the registration mode. During this time, when the communication unit 12 receives the registration request signal and the identification information transmitted from the power tool 2, the management unit 111 causes the storage unit 13 to store the identification information of the power tool 2 that has transmitted the registration request signal. (S12).

  Until the fixed time T2 elapses (No in S13), the monitoring device 1 waits to receive the registration request signal from the electric power tool 2. Then, if the communication unit 12 can receive the same number of registration request information as the number of units used in the next work process before the predetermined time T2 elapses (Yes in S13), the management unit 111 determines that the required number of units is electrically operated. It is determined that the tool 2 has been registered, and the identification information received during this time is confirmed as the identification information of the power tool 2 to be used in the next work process. Then, the management unit 111 causes the communication unit 12 to transmit a work permission signal to the electric power tool 2 that has transmitted the registration request information until the predetermined time T2 has elapsed (S14), and then sets the registration mode. finish. As a result, the electric power tool 2 that has transmitted the registration request information until the elapse of the certain time T2 becomes ready for work, and becomes ready for work using the electric power tool 2.

  In addition, when the management unit 111 receives the same number of registration request signals as the number of used tools for each tool type for each tool type of the power tool used in the next work process, the management unit 111 determines that the power tool that is the transmission source of the registration request signal has the same registration request signal. A work permission signal may be transmitted. When a plurality of types of power tools 2 are used in the next work process, when the number of power tools 2 that has transmitted the registration request signal for each type of power tools 2 matches the number of power tools used for each type. The management unit 111 transmits a work permission signal to the electric power tool 2 that has transmitted the registration request signal. Accordingly, the management unit 111 can bring the electric power tool 2 into a usable state only when the appropriate electric power tool 2 is used.

  On the other hand, if the communication unit 12 cannot receive the same number of pieces of registration request information as the number of units used in the next work process before the fixed time T2 elapses after switching to the registration mode, the management unit 111 determines the next It is determined that the required number of power tools 2 could not be registered in the work process. In this case, the management unit 111 does not cause the communication unit 12 to transmit the work permission signal to the electric power tool 2 that has transmitted the registration request information until the predetermined time T2 elapses, and ends the registration mode. As a result, the electric power tool 2 that has transmitted the registration request information until the elapse of the predetermined time T2 becomes in a work-disabled state, and a state in which the power tool 2 cannot be used for work.

  Next, the registration process in the power tool 2 will be described with reference to the flowchart of FIG. A worker who performs work under the supervision of the site supervisor or the site supervisor selects and selects the power tool 2 to be used in the next work process in a state where the operation mode of the management device 1 is set to the registration mode. A process of registering the power tool 2 in the management device 1 is performed. After the battery pack 203 is removed from the power tool 2 (S21) and the battery pack 203 is attached to the power tool 2 (S22), the control unit 21 of the power tool 2 performs a reset operation.

  When the trigger switch 241 is operated (Yes in S24) between the reset operation of the control unit 21 and the elapse of the predetermined time T1 (No in S23), the control unit 21 discriminates from the registration request signal. Information is transmitted from the communication unit 22 to the management device 1 (S25). At this time, the control unit 21 may notify by flashing the red-light-emitting display lamp 29 that it is in a state of waiting for registration in the management device 1. As a result, the power tool 2 transmits the registration request signal and the identification information to the management device 1, and the management device 1 performs the registration process. If the communication unit 22 can receive the work permission signal from the management device 1 after transmitting the registration request signal, the power tool 2 turns off the red-lighting display lamp 29 and turns on the green-lighting display lamp 29, for example. Notifies that the registration process to the management device 1 is completed.

  On the other hand, when the trigger switch 241 is not operated (No in S24) and the predetermined time T1 has elapsed from the time when the control unit 21 performed the reset operation (Yes in S23), the control unit 21 registers with the management device 1. Normal processing is executed without processing.

  As described above, when the trigger switch 241 of the power tool 2 used in the next work step is operated while the management device 1 is set to the registration mode, the power tool 2 discriminates the management device 1 from the registration request signal. Send information and. Then, if the same number of registration request signals as the number of units used in the next work process are transmitted to the management device 1, the management device 1 uses the power tool 2 that has transmitted the registration request signal in the next work process. 2 is registered, and a work permission signal is transmitted to these electric tools 2.

  Here, if the power tool 2 that has transmitted the registration request signal can receive the work permission signal from the management device 1, it becomes a state in which the drive operation by the drive unit 25 can be performed according to the operation signal input from the trigger switch 241. The green-emitting display lamp 29 is turned on. Then, when the trigger switch 241 is operated, the electric power tool 2 causes the drive unit 25 to perform a drive operation according to the operation signal input from the trigger switch 241, and transmits information indicating the work content to the management device 1.

  On the other hand, if the power tool 2 that has transmitted the registration request signal cannot receive the work permission signal from the management device 1, the drive unit 25 will not operate even if the trigger switch 241 is operated, and, for example, the red-emitting display lamp 29. Is lit up to inform that it is in an unusable state.

  As described above, when the power tool 2 used in the next work process is registered in the management device 1, regular communication is performed between the management device 1 and the power tool 2 registered in the management device 1. (See FIG. 6). FIG. 6 shows that when four power tools 2a, 2b, 2c, 2d are registered in the management device 1 in a certain work process, the management device 1 and the four power tools 2a, 2b, 2c, 2d The state of the communication performed between is shown.

  The management device 1 transmits the monitoring signal A1 to the electric power tools 2a, 2b, 2c, 2d that have transmitted the work permission signal, every time a certain transmission interval t1 has elapsed. The monitoring signal A1 may include identification information of the power tools 2a, 2b, 2c, 2d to be controlled, and work information (e.g., information such as the number of tightening times and tightening torque) indicating the work content.

  When the power tools 2a, 2b, 2c, 2d receive the monitoring signal A1, respectively, the management device 1 sends the ACK signals B1, B2, B3, B4 at the transmission timing set in synchronization with the transmission timing of the monitoring signal A1. Send to. Note that the power tools 2a, 2b, 2c, 2d ACK information indicating work contents such as tightening torque and the number of tightening screws if the drive unit 25 is performing screw tightening work after the time when the ACK signal was transmitted last time. You may transmit to the management apparatus 1 with a signal. As a result, the management device 1 can manage the work content performed by each of the electric power tools 2a, 2b, 2c, 2d, and the actual value of the tightening torque indicates whether or not the specified number of tightening operations have been performed. It is possible to know whether the tightening torque is within the allowable range.

  Here, the order in which the four electric tools 2a, 2b, 2c, 2d transmit the ACK signals may be determined, for example, in ascending order of the numbers represented by the identification information, and the timings for transmitting the ACK signals do not overlap. It suffices to shift the transmission timing as described above. The transmission interval t2 at which the plurality of electric power tools 2 transmit the ACK signal is expressed as t2 = t1 / N2. Here, t1 is the transmission interval of the monitoring signal A1, N2 is the number of divisions into which the transmission interval t1 of the monitoring signal A1 is divided, and the number of divisions N2 is N1 when the number of electric tools 2 that have given the work permission signal is N1. It may be set to an integer larger than N1. If the transmission interval t1 of the monitoring signal A1 is, for example, several hundreds of milliseconds and the division number N2 is, for example, one thousand, the transmission interval t2 of the ACK signal will be several hundreds of microseconds.

  In this way, the management device 1 can confirm the existence of each power tool 2 by periodically communicating with the plurality of power tools 2 in each work process, and the power tool 2 can also be used. The work status can be collected from. The communication between the management device 1 and the plurality of power tools 2 is not limited to be performed regularly, and may be performed once or a plurality of times in each work process.

  By the way, when the management device 1 is in communication with the power tools 2a to 2d used in the current work process and cannot receive a response signal from at least one of the power tools 2a to 2d, the management unit 111. Causes the power tool 2a to 2d to transmit a work stop command from the communication unit 12. When the management device 1 is in a state of being unable to communicate with a part of the power tools 2a to 2d used in the current work process, the management device 1 cannot grasp the operating state of the power tool that cannot communicate. Therefore, the management unit 111 of the management device 1 causes the communication unit 12 to transmit a work stop command from the communication unit 12 to the power tools 2a to 2d when communication with some of the power tools 2a to 2d is disabled. As a result, the work in the current work process can be stopped, and a state in which the management device 1 cannot grasp the work content using the power tools 2a to 2d can be avoided.

  Here, the management unit 111 of the management device 1 may change the communication sequence according to the communication state with the power tool 2 that is the communication partner.

  For example, the communication unit 12 of the management device 1 has a function of measuring the reception signal strength of the ACK signal transmitted from the electric power tool 2, and the management unit 111 includes the ACK signal received by the communication unit 12 and the reception signal thereof. Get strength information. The management unit 111 sets the number of retransmissions of each power tool 2 so that the power tool 2 having a lower received signal strength increases the number of signal retransmissions, and the communication unit 12 transmits a setting signal for setting the number of retransmissions from the transmission source. Send to tool 2. As a result, the lower the received signal strength is, that is, the worse the communication environment is, the more the number of times the electric power tool 2 is retransmitted is set. Therefore, even if the communication between the electric power tool 2 and the management device 1 fails, the signal is transmitted. Re-sending improves the likelihood of successful communication.

  The communication unit 22 of the power tool 2 has a function of measuring the reception signal strength of the monitoring signal A1 transmitted from the management device 1, and the control unit 21 controls the reception signal strength of the communication unit 22 according to the reception signal strength. The number of retransmissions may be set such that the number of retransmissions increases as the received signal strength decreases. After setting the number of signal retransmissions, the control unit 21 transmits a signal notifying the setting of the number of retransmissions from the communication unit 22 to the management device 1. Also in this case, the lower the received signal strength is, that is, the worse the communication environment is, the larger the number of times the electric power tool 2 is retransmitted is, so that the electric power tool and the management device 1 can be reliably communicated.

  Further, in the present embodiment, the control unit 21 of each power tool 2 causes the communication unit 22 to transmit the registration request signal and the identification information to the management device 1 in a state before starting the work. The communication sequence between the power tool 2 and the management device 1 may be changed according to the information. For example, among the plurality of electric tools 2, for the electric tool 2 to be focused on (hereinafter referred to as the focused power monitoring target electric tool 2), information on the work content transmitted from the electric tool 2 is managed by the management device 1. There is a demand for reliable reception. Here, the power tool 2 to be the priority monitoring target is, for example, the power tool 2 that is mainly used by a worker who has many construction errors, or the power tool 2 that is used for work on an important part where quality control is strict.

  Therefore, the management unit 111 of the management device 1 determines whether or not the power tool 2 is a priority monitoring target based on the identification information transmitted from the power tool 2. Then, if the power tool 2 of the communication partner is the power tool 2 of the priority monitoring target, the management unit 111 of the management device 1 increases the number of retransmissions of the power tool 2 as compared with the power tool 2 other than the power monitoring target. The number of times of retransmission is set to, and the signal for setting the number of times of retransmission is transmitted from the communication unit 12 to the power tool 2. As a result, between the power tool 2 that is the priority monitoring target and the management device 1, the number of times of retransmitting a signal can be set higher than that in the communication sequence between the other power tool 2 and the management device 1. 1 can reliably receive the work content information. Here, the management unit 111 may adjust the number of resends of the power tool 2 to be focused monitoring according to the communication state with the power tool 2, and further increases the number of resends when the received signal strength is low. Thus, the number of signal retransmissions may be set.

  As described above, the work management system 10 of this embodiment includes the management device 1 and a plurality of power tools (power tools 2). The management device 1 includes a first communication unit (communication unit 12) and a management unit 111. Each of the plurality of power tools has a second communication unit (communication unit 22) and a control unit 21. The control unit 21 is configured to, when the second communication unit receives the monitor signal transmitted from the management device 1, cause the response signal for the monitor signal to be transmitted from the second communication unit to the management device 1. The management unit 111 causes the plurality of power tools to transmit the monitoring signal from the first communication unit, and if the response signal cannot be received from at least one of the plurality of power tools, the management unit 111 causes all of the plurality of power tools to have the first communication unit. Is configured to transmit a work stop signal.

  As a result, when at least one of the plurality of power tools and the management device 1 cannot communicate with each other, the management unit 111 transmits a work stop signal to all of the plurality of power tools from the first communication unit, thereby managing It is possible to avoid the state where the device 1 cannot grasp the operating state of the power tool. Therefore, the plurality of power tools can be operated in a state in which communication can be reliably performed between each of the plurality of power tools and the management device 1.

  The management apparatus 1 of the present embodiment is a management apparatus used in the work management system 10 described above, and includes a first communication unit (communication unit 12) and a management unit 111. The management unit 111 causes the plurality of power tools (power tool 2) to transmit the monitoring signal from the first communication unit, and when the response signal cannot be received from at least one of the plurality of power tools, all of the plurality of power tools are received. To transmit a work stop signal from the first communication unit.

  As a result, when at least one of the plurality of power tools and the management device 1 cannot communicate with each other, the management unit 111 transmits a work stop signal to all of the plurality of power tools from the first communication unit, thereby managing It is possible to avoid the state where the device 1 cannot grasp the operating state of the power tool. Therefore, the plurality of power tools can be operated in a state in which communication can be reliably performed between each of the plurality of power tools and the management device 1.

  In the work management system 10 of the present embodiment, the management device 1 may further include a storage unit 13 that stores the number of power tools (power tools 2) used in each of the plurality of work processes. The control unit 21 of the power tool used in the next work process among the plurality of power tools has a registration request signal from the second communication unit (communication unit 22) to the management device 1 and the power tool in the state before the work is started. It is preferable to transmit the identification information of When the first communication unit (communication unit 12) receives the same number of registration request signals as the number of units used in the next work process, the management unit 111 works on the power tool that is the transmission source of the registration request signal from the first communication unit. It is preferable to transmit the permission signal.

  As described above, when the first communication unit receives the same number of registration request signals as the number of units used in the next work process, the management unit 111 permits the power tool that is the transmission source of the registration request signal from the first communication unit to perform work. Sending a signal. Therefore, it is possible to reliably perform communication between each of the power tools used in the next work process and the management device 1.

  In the work management system 10 of the present embodiment, the storage unit 13 stores, for each work process, the tool type of the power tool (power tool 2) used in each of the plurality of work processes and the number of units used for each tool type. May be. When the management unit 111 receives the same number of registration request signals as the number of tools used for each tool type for each tool type of the power tool used in the next work process, the management unit 111 permits the power tool that is the transmission source of the registration request signal to perform work. A signal may be transmitted.

  As a result, when a plurality of types of power tools are used in the next work process and the number of power tools stored for each tool type transmits a registration request signal, the management device 1 sends a work permission signal. Can be sent.

  In the work management system 10 according to the present embodiment, the management device 1 includes a reading unit (for example, a barcode, which is provided in the power tool (power tool 2) and reads information on the tool type from a medium in which the information on the tool type of the power tool is recorded. (Reader 3, reader device, etc.) may be further included. When the first communication unit (communication unit 12) receives the registration request signal transmitted from the power tool, the management unit 111 of the management device 1 is a medium (for example, label 31, RFID tag, etc.) provided in the power tool. ), The tool type read by the reading unit is set as the tool type of the power tool.

  The management device 1 can read the information on the tool type of the power tool from the medium provided in the power tool using the reading unit.

  In the work management system of the present embodiment, each of the plurality of power tools (power tool 2) is configured to set the number of signal retransmissions according to the communication state between the power tool and the management device 1. May be.

  Each of the plurality of power tools can reliably communicate between each of the plurality of power tools and the management device 1 by setting the number of times the signal is retransmitted according to the communication state.

  Further, the management device 1 may set the number of retransmissions of the power tool of the priority monitoring target among the plurality of power tools (power tool 2) to a number larger than the number of retransmissions of other power tools.

  As a result, the management device 1 can more reliably receive the signal from the power tool of the priority monitoring target.

  In the present embodiment, the torque wrench is illustrated as the tightening tool, but the tightening tool is not limited to a torque tool capable of tightening with a predetermined torque, and a tightening tool capable of tightening a screw member may be used. The present invention can be applied to any tool.

1 Management device 2 Power tool (power tool)
3 Bar code reader (reading section)
111 management unit 12 communication unit (first communication unit)
13 storage unit 21 control unit 22 communication unit (second communication unit)
24 Operation Unit 25 Drive Unit 31 Label (Medium)

Claims (1)

With a management device and multiple power tools,
Each of the plurality of power tools is provided with a medium recording information of the tool type of the power tool,
The management device has a reading unit that reads information on the tool type from the medium,
The management device sets the tool type read by the reading unit as the tool type of the power tool.
Work management system.

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