JP2022142658A - Controller and control system - Google Patents

Abstract

To provide a technology for inhibiting a worker who does not fulfill a condition for entering a predetermined area from working in the predetermined area.SOLUTION: A controller comprises: an acquisition unit which acquires, from a worker who works within a predetermined area, worker information about the worker; a determination unit which determines whether or not a first condition which uses the worker information, and in which the worker can enter a predetermined area, is satisfied; and a changing unit which changes a state of a target device which the worker operates within the predetermined area, from an inhibited state in which it is inhibited to accept specific operation from the worker, to a permission state in which it is permitted to accept the specific operation from the worker, when the first condition is satisfied, and in which the specific operation is operation for the worker to work within the predetermined area, and the state of the target device is maintained in the inhibited state, when the first condition is not satisfied.SELECTED DRAWING: Figure 3

Description

The technology disclosed in this specification relates to a control device and a control system.

Patent Literature 1 discloses a wearable terminal that authenticates a worker using biometric information. The wearable terminal transmits the unit ID to the authentication operation terminal on condition that the wearable terminal is worn by an authorized worker. The authentication operation terminal executes predetermined processing on condition that the unit ID is received from the wearable terminal.

JP-A-2010-55368

For example, a worker working in a predetermined area such as a factory may be required to meet conditions for entering the predetermined area. In the above technology, the authentication operation terminal executes a predetermined process when the operator is successfully authenticated even though the conditions for entering the predetermined area are not satisfied. A worker who does not meet the conditions for entering the predetermined area may work in the predetermined area.

This specification provides a technique for suppressing a worker who does not meet the conditions for entering a predetermined area from working in the predetermined area.

The control device disclosed in the present specification includes an acquisition unit that acquires worker information about the worker from a worker working in a predetermined area, and a first condition that uses the worker information, a judgment unit for judging whether or not the first condition for the worker to enter the predetermined area is satisfied, and if the first condition is satisfied, the worker enters the predetermined area. a change unit that changes the state of a target device to be operated within a device from a prohibited state that prohibits receiving a specific operation from the worker to a permitted state that allows the user to receive the specific operation. The specific operation is an operation for the worker to work within the predetermined area, and the state of the target device is maintained in the prohibited state when the first condition is not satisfied. and the changing unit.

According to the configuration described above, the state of the target device is changed from the prohibited state to the permitted state when the first condition for entering the predetermined area is satisfied. On the other hand, if the first condition is not satisfied, the state of the target device is maintained in the prohibited state, and the operator cannot operate the target device. It is possible to prevent a worker who does not meet the conditions for entering the predetermined area from working in the predetermined area.

The worker information includes at least one of body temperature information indicating the body temperature of the worker and clothing information indicating the clothing worn by the worker, and the first condition is the body temperature. At least one of a body temperature condition using the information and a clothing condition using the clothing information may be included.

According to the above-described configuration, it is possible to limit the worker's work within a predetermined area by using the conditions regarding the worker's body temperature and the worker's clothing.

The acquisition unit may acquire the worker information including the body temperature information and the clothing information by analyzing an image captured by a camera.

For example, a comparative example is assumed in which clothing information is obtained from an image captured by a camera, and body temperature information is obtained from a device (for example, a temperature sensor) different from the camera. According to the above configuration, a device other than the camera is not required, and the configuration of the control device can be simplified.

The body temperature conditions are a condition in which the body temperature indicated by the body temperature information in the worker information exceeds a preset threshold, and a condition in which the body temperature indicated by the body temperature information in the worker information is and a condition exceeding a value calculated using the transition information indicating the transition of the body temperature.

For example, a situation is assumed in which the entry of a worker into a predetermined area is determined based on a preset threshold value. According to the above configuration, it is possible to restrict the worker's work within a predetermined area according to such a situation. Also, for example, there may be individual differences in the body temperature of workers. According to the above configuration, by using the transition information indicating the transition of the body temperature of the worker, it is possible to calculate a value that takes into consideration individual differences in the body temperature of the worker. In addition, it is possible to restrict the worker's work within a predetermined area in consideration of individual differences in the body temperature of the worker.

The determination unit determines that the first condition is satisfied when both the body temperature condition and the clothing condition are satisfied, and the determination unit selects one of the body temperature condition and the clothing condition. is not satisfied, it may be determined that the first condition is not satisfied.

As conditions for the worker to enter the predetermined area, a situation is assumed in which both a condition regarding the body temperature of the worker and a condition regarding the clothing worn by the worker are required. According to the above-described configuration, it is possible to restrict the worker's work within a predetermined area according to such a situation.

The determination unit determines that the body temperature information and the clothing information are acquired within a predetermined first time period and both the body temperature condition and the clothing condition are satisfied, and the first condition is satisfied. is satisfied, and the body temperature information and the clothing information are not acquired within the first time period, even if both the body temperature condition and the clothing condition are satisfied, the It may be determined that the first condition is not met.

The fact that the time between the acquisition of the body temperature information and the acquisition of the clothing information is relatively short means that the worker who supplied the body temperature information and the worker who supplied the clothing information are highly likely to be the same. On the other hand, the fact that the time between acquisition of body temperature information and acquisition of clothing information is relatively long indicates that the worker who supplied the body temperature information and the worker who supplied the clothing information may be different. is high. According to the above configuration, the state of the target device can be maintained in the prohibited state when there is a high possibility that the worker who supplied the body temperature information is different from the worker who supplied the clothing information. For example, it is possible to prevent the second worker from impersonating the first worker and working in the predetermined area.

The control device described above is a first notification unit that performs a predetermined first notification when the body temperature condition is not satisfied, and when the body temperature condition is satisfied and the clothing condition is not satisfied. , the first notification unit may further include the first notification unit in which the first notification is not performed.

If the body temperature requirement is not met, it is highly likely that the worker is unwell and urgent action is required. On the other hand, when the clothing condition is not met, it is less likely that urgent action is required than when the temperature condition is not met. According to the above configuration, the first notification is performed when there is a high possibility that urgent measures are required. As a result, for example, it is possible to prompt the administrator of the predetermined area to take urgent measures.

The control device described above may further include an authentication unit that authenticates a specific worker. In that case, the changing unit may change the state of the target device from the prohibited state to the permitted state when the specific worker is successfully authenticated and the first condition is satisfied. .

According to the above-described configuration, in addition to the first condition using the worker information, success in authentication of a specific worker can be added as a condition for permitting the worker to work within the predetermined area. .

When the above-described control device satisfies the first condition and the second condition using the worker information and the second condition different from the first condition is not satisfied, may further include a first notification unit that performs a predetermined first notification.

A manager of a predetermined area requires a worker to enter various conditions. For example, it is assumed that the priority of the second condition is set lower than the priority of the first condition. According to the above configuration, if the first condition is met, the operator can operate the target device, but if the second condition is not met, the second notification is made. Accordingly, it is possible to prompt the worker to take action for satisfying the second condition. In addition, it is possible to prevent a situation in which the worker cannot operate the target device due to the second condition having a relatively low priority being not satisfied.

The control device described above may further include a storage control unit that stores the acquired worker information in a database when the worker information is acquired from the worker.

According to the configuration described above, past worker information can be accumulated in the database.

The acquiring unit further acquires the new worker information from the worker after a predetermined second time period has elapsed since the state of the target device was changed from the prohibited state to the permitted state. good too. In that case, the determination unit further uses the new worker information to determine whether the first condition is satisfied, and the change unit further uses the new worker information. The state of the target device may be changed from the permitted state to the prohibited state when the first condition is not satisfied.

According to such a configuration, it is possible to prevent a worker who no longer satisfies the first condition while working in the predetermined area from continuing to work in the predetermined area.

The target device may be a separate device from the control device.

According to such a configuration, it is possible to prevent a worker who does not meet the conditions for entering the predetermined area from working in the predetermined area using the target device separate from the control device. can be done.

This specification also discloses a control system comprising a control device and one or more operation terminals operated by a worker working within a predetermined area. The control device includes an acquisition unit that acquires worker information about the worker from a worker working within a predetermined area, and a first condition using the worker information, wherein the worker is the a judgment unit for judging whether or not the first condition for entering a predetermined area is satisfied; and the operator operating within the predetermined area when the first condition is satisfied. A transmitting unit that transmits a control signal for changing the state of the target device from a prohibited state to a permitted state to each of one or more target devices, wherein the prohibited state is set when the worker performs a specific operation. The permitted state is a state in which the specific operation is permitted to be received from the worker, and the specific operation is performed by the worker within the predetermined area. and the transmitting unit configured not to transmit the control signal to each of the one or more target devices when the first condition is not satisfied, wherein each of the one or more target devices is configured to change the state of the target device from the prohibited state to the permitted state when receiving the control signal from the control device, and when not receiving the control signal from the control device. , the state of the operation terminal may be maintained in the prohibited state.

According to such a configuration, it is possible to prevent a worker who does not meet the conditions for entering the predetermined area from working in the predetermined area using one or more target devices. Also, the controller can be used to control the state of one or more target devices.

Details and further improvements of the technique disclosed in this specification are described in the following "Mode for Carrying Out the Invention".

The front view of the terminal device 10 which is an example of the control device of 1st Example is shown. 2 shows a configuration diagram of the hardware of the terminal device 10. FIG. The terminal device 10 of 1st Example shows the flowchart of the process performed before a worker starts work. FIG. 4 shows a flowchart of processing executed by the terminal device 10 of the first embodiment while displaying a prohibited screen. The terminal device 10 of 1st Example shows the flowchart of the process performed during a worker's work. The terminal device 10 of 2nd Example shows the flowchart of the process performed before a worker starts work. A terminal device 10b of a third embodiment is shown. FIG. 2 shows a configuration diagram of hardware of a terminal device 10b. The terminal device 10b of 3rd Example shows the flowchart of the process which a worker performs before starting work. The block diagram of the control system 100 of 4th Example is shown. 4 shows a configuration diagram of the hardware of the control server 50. FIG. The control server 50 shows a flow diagram of processing executed before a worker starts work.

(First embodiment)
(Configuration of terminal device 10; FIGS. 1 and 2)
A terminal device 10 according to the present embodiment is a device used by workers in a predetermined area (for example, factory, office, etc.). The terminal device 10 is, for example, an information reading device for reading information in an information code. The terminal device 10 is used, for example, for inventory management of parts in a factory. Note that, in a modification, the terminal device 10 may be a mobile terminal such as a smart phone or a tablet PC. As shown in FIG. 1 , the terminal device 10 includes a camera 2 , a display section 4 , an operation section 6 , a fingerprint acquisition section 8 , a notification section 9 and a control section 20 .

The camera 2 captures an image of the worker positioned on the front side of the terminal device 10 (that is, on the front side of the paper surface of FIG. 1). Camera 2 includes a temperature sensor 2t. The temperature sensor 2t measures the body temperature of the worker by analyzing infrared rays radiated from the worker when capturing the image of the worker.

The display unit 4 is a display for displaying various information. The operation unit 6 has a plurality of keys. A user can input various instructions to the terminal device 10 by operating the operation unit 6 . Note that the display unit 4 may also function as a touch panel (that is, the operation unit 6) that receives instructions from the user.

The fingerprint acquisition unit 8 is a sensor that acquires the fingerprint of the worker from the finger of the worker. The notification unit 9 is a device that outputs voice, notification sound, warning sound, and the like. The notification unit 9 is, for example, a speaker.

The control unit 20 has a CPU 22 and a memory 24 . The CPU 22 executes various processes according to programs 30 stored in the memory 24 . The memory 24 is composed of a volatile memory, a nonvolatile memory, or the like. The memory 24 further stores fingerprint authentication information, transition information, an operator code, and an administrator code. The fingerprint authentication information is information indicating features of the fingerprint of the worker who uses the terminal device 10 . Fingerprint authentication information is stored in the memory 24 by the operator. The transition information is information indicating the transition of the worker's body temperature at a plurality of dates and times (for example, dates and times during the most recent month). The worker code is a code for authenticating the worker. The administrator code is a code for authenticating the administrator of a given area.

A manager of a predetermined area asks workers for various conditions for entering the predetermined area. For example, for the purpose of managing the physical condition of the worker, the manager asks the worker for a condition regarding the physical condition of the worker (for example, a condition regarding body temperature). In addition, for the purpose of safety and hygiene management within a predetermined area, the manager asks the worker for conditions regarding what to wear, such as a mask, hat, and glasses.

The memory 24 also stores condition information indicating various conditions required of the worker. The condition information includes an absolute threshold Tth1 for body temperature, an average threshold Tth2 for body temperature, and wearing feature information. Absolute threshold Tth1 and average threshold Tth2 will be described later. The wearable article characteristic information is information indicating the features of the worn article such as a mask, hat, and glasses, and is image data, for example. Note that the condition information may be changed by the administrator in accordance with changes in rules and the like regarding work within the predetermined area.

For example, a worker operates the terminal device 10 in a factory, which is a predetermined area, to perform various tasks such as checking the inventory of parts and placing an order.

(Processing executed by the terminal device 10; FIGS. 3 to 5)
(Before starting work; Fig. 3)
Processing executed by the control unit 20 of the terminal device 10 before the worker starts work will be described with reference to FIG. 3 . For example, the terminal device 10 is arranged near the entrance of a predetermined area, and the worker picks up the terminal device 10 before entering the predetermined area. The processing in FIG. 3 is triggered by turning on the power of the terminal device 10 .

Here, the state of the terminal device 10 will be described first. The terminal device 10 operates in one of multiple states including a locked state, an unlocked state, and an allowed state. The locked state is a state before the operator is authenticated, and is a state in which acceptance of type 1 operations is allowed and acceptance of type 2 and 3 operations described later is prohibited. The first type of operation is an operation permitted by both the operator and a third party other than the operator, such as an emergency call operation.

In addition, the canceled state is a state after the operator has been successfully authenticated, in which both type 1 and type 2 operations are allowed to be accepted, and type 3 operations, which will be described later, are prohibited. is in a state to The second type of operation is an operation that is permitted by the operator and not permitted by a third party other than the operator. The second type of operation is, for example, an operation of browsing an image captured by the camera 2, an operation of browsing a web page, or the like.

In addition, the allowable state is a state after the operator has been successfully authenticated and the conditions described later are satisfied. is in a state to The third type of operation is an operation that is permitted for workers who meet the conditions described below and is not permitted for workers who do not meet the conditions described below. The third type of operation is, for example, operations related to various tasks such as part inventory confirmation and ordering.

For example, when the terminal device 10 is connected to a predetermined charging stand (not shown), the state of the terminal device 10 is changed from either the released state or the permitted state to the locked state. In the initial state of FIG. 3, the terminal device 10 is in the locked state.

In S<b>2 , the control unit 20 acquires fingerprint information representing the fingerprint of the operator from the fingerprint acquiring unit 8 in response to the operator's finger touching the fingerprint acquiring unit 8 . Next, in S4, the control unit 20 executes fingerprint authentication using the acquired fingerprint information. Specifically, the control unit 20 determines that the fingerprint authentication is successful when determining that the fingerprint features indicated by the acquired fingerprint information match the features indicated by the fingerprint authentication information in the memory 24. . On the other hand, the control unit 20 determines that the fingerprint authentication has failed when determining that the two characteristics do not match.

If the control unit 20 determines that the fingerprint authentication has succeeded (YES in S4), the process proceeds to S6 and subsequent steps. On the other hand, when the control unit 20 determines that the fingerprint authentication has failed (NO in S4), the control unit 20 skips the processing after S6 and ends the processing in FIG. That is, the state of the terminal device 10 is maintained in the locked state.

In S6, the control unit 20 shifts the state of the terminal device 10 from the locked state to the unlocked state.

In S10, the control unit 20 activates the camera 2 and causes the camera 2 to capture an image of the worker. Thereby, the control unit 20 acquires image data representing an image of the worker from the camera 2 . Here, the image data includes data indicating the temperature distribution acquired by the temperature sensor 2t.

In S12, the control unit 20 analyzes the image indicated by the acquired image data. In S14, the control unit 20 acquires the worker's body temperature T1 from the analysis result of S12.

In S<b>16 , the control unit 20 stores the acquired body temperature T<b>1 as transition information in the memory 24 .

In S<b>20 , the control unit 20 determines whether or not the acquired body temperature T<b>1 is lower than the absolute threshold Tth<b>1 included in the condition information in the memory 24 . The absolute threshold Tth1 is, for example, 37.5 degrees, which is a value preset by the administrator. If body temperature T1 is lower than absolute threshold value Tth1 (YES in S20), control unit 20 proceeds to S24. On the other hand, when body temperature T1 is equal to or greater than absolute threshold value Tth1 (NO in S20), control unit 20 proceeds to S60.

In S<b>24 , the control unit 20 calculates an average body temperature Ta, which is the average of a plurality of body temperatures included in the transition information in the memory 24 . In S26, the control unit 20 determines whether or not the body temperature T1 obtained in S14 is lower than the sum of the average threshold value Tth2 and the average body temperature Ta. The average threshold Tth2 is, for example, 1 degree and is a value preset by the administrator. If body temperature T1 is lower than the sum of average threshold value Tth2 and average body temperature Ta (YES in S26), control unit 20 proceeds to S30. On the other hand, when body temperature T1 is equal to or greater than the sum of average threshold value Tth2 and average body temperature Ta (NO in S26), control unit 20 proceeds to S60.

In S30, the control unit 20 analyzes the image of the worker captured in S10. Then, the control unit 20 uses the image of the clothing having the characteristics indicated by the clothing characteristic information included in the condition information in the memory 24 so that the clothing included in the image of the worker meets the clothing condition. Determine whether or not the requirements are met. Satisfaction of the clothing condition means that the worker is wearing predetermined clothing (mask, cap, glasses, etc.). If the control unit 20 determines that the clothing condition is satisfied (YES in S30), the process proceeds to S40. On the other hand, when the control unit 20 determines that the clothing condition is not satisfied (NO in S30), the process proceeds to S60.

In S40, the control unit 20 analyzes the image of the worker captured in S10, and determines whether the worker's clothing (for example, a hat) is dirty. For example, the control unit 20 compares the color of the clothing indicated by the clothing characteristic information in the memory 24 with the color of the clothing included in the image of the worker. The control unit 20 determines that the worker's clothing is dirty when the color difference between the two exceeds a predetermined standard, and determines that the worker's clothing is dirty when the color difference does not exceed the predetermined standard. judge not. If the control unit 20 determines that the worker's clothing is not dirty (NO in S40), the control unit 20 skips the processing of S42 and proceeds to S50. On the other hand, when the control unit 20 determines that the worker's clothing is dirty (YES in S40), the process proceeds to S42. In S<b>42 , the control unit 20 causes the notification unit 9 to output a notification sound to notify that the clothing is dirty. After completing S24, the control unit 20 proceeds to S50.

In S50, the control unit 20 changes the state of the terminal device 10 from the release state to the allowable state. Specifically, the control unit 20 causes the display unit 4 to display an operation reception screen capable of receiving the third type of operation (for example, operations related to various tasks such as inventory checking of parts). Thereby, the worker executes the third type operation via the operation reception screen. On the other hand, in S<b>60 after any one of S<b>20 , S<b>26 and S<b>30 is NO, the control unit 20 displays a prohibition screen on the display unit 4 . As a result, the state of the terminal device 10 is maintained in the released state.

(During prohibition screen display; Fig. 4)
The processing executed by the control unit 20 during display of the prohibited screen in S60 of FIG. 3 will be described with reference to FIG.

S62 is the same as S20 in FIG. If the body temperature T1 obtained in S14 of FIG. 3 is lower than the absolute threshold value Tth1 (YES in S62), the controller 20 proceeds to S64. S64 is the same as S26 in FIG. If body temperature T1 is lower than the sum of average threshold value Tth2 and average body temperature Ta (YES in S64), control unit 20 proceeds to S70.

At S<b>70 , the control unit 20 monitors whether the worker code is correctly input via the operation unit 6 . If the operator code is correctly input (YES in S70), the controller 20 proceeds to S72. If the operator code is not entered correctly (NO in S70), the prohibition screen is kept displayed.

In S72, the control unit 20 executes the same process as in S10 again. After that, in S74, the control unit 20 analyzes the image acquired in S72, and determines whether or not the clothing included in the image of the worker acquired in S72 satisfies the clothing conditions, as in S30. . If the control unit 20 determines that the clothing condition is satisfied (YES in S74), the process proceeds to S76. S76 is the same as S50 in FIG. On the other hand, when the control unit 20 determines that the wearing conditions are not satisfied (NO in S74), the control unit 20 returns to S72 and acquires the image of the worker. That is, the control unit 20 repeats the processing of S72 to S74 until the conditions for the clothing worn by the worker are satisfied.

If body temperature T1 is equal to or greater than absolute threshold value Tth1 (NO in S62), or if body temperature T1 is equal to or greater than the sum of average threshold value Tth2 and average body temperature Ta (NO in S64), control unit 20 proceeds to S80. move on.

In S80, the control unit 20 causes the display unit 4 to display an administrator calling screen. In subsequent S82, the control unit 20 causes the notification unit 9 to output a warning sound. In subsequent S90, the control unit 20 determines whether or not the administrator code is correctly input via the operation unit 6. If the administrator code is entered correctly (YES in S90), control unit 20 stops the warning sound in S92. That is, the control unit 20 continues to output the warning sound until the administrator code is correctly input. After completing S92, the control unit 20 proceeds to S74.

In S74, as described above, it is determined whether or not the worker satisfies the wear condition. Here, the control unit 20 determines whether or not the image of the worker acquired in S10 of FIG. 3 satisfies the wear condition. As a result, it is possible to prevent the terminal device 10 from entering an allowable state for a worker who has not satisfied the body temperature condition and the clothing condition.

(During work; Fig. 5)
Processing executed by the terminal device 10 during work performed by the worker will be described with reference to FIG. 5 . The processing in FIG. 5 is executed after the operation acceptance screen (S50 in FIG. 3 or S74 in FIG. 4) is displayed.

In S102, the control unit 20 monitors whether or not a predetermined time (for example, two hours) has elapsed since the operation reception screen was displayed. If the predetermined time has passed (YES in S102), the control unit 20 proceeds to S110.

S110 to S130 are the same as S10 to S30 in FIG. Here, in S110 of FIG. 5, the control unit 20 newly acquires the image data representing the image of the worker, and in S114 of FIG. 5, newly acquires the body temperature T2 of the worker. That is, the control unit 20 determines again whether both the condition using the body temperature of the worker (S120 and S126) and the clothing condition (S132) are satisfied.

If the control unit 20 determines that both the condition using the body temperature of the worker and the clothing condition are satisfied (YES in all of S120, S126, and S132), the process of S160, which will be described later, is skipped. Then, the processing of FIG. 5 ends. That is, the state of the terminal device 10 is maintained in the allowable state.

Further, when the control unit 20 determines that at least one of the condition using the body temperature of the worker and the wearing condition is not satisfied (NO in at least one of S120, S126, and S130), Proceed to S160. In S<b>160 , the control unit 20 changes the state of the terminal device 10 from the allowable state to the canceled state, and causes the display unit 4 to display the prohibition screen. When S160 ends, the process of FIG. 5 ends.

(Effect of this embodiment)
A situation is assumed in which both a body temperature condition related to the body temperature of the worker and a clothing condition related to the clothing worn by the worker are required as conditions for the worker to enter the predetermined area. According to the configuration of this embodiment, when the body temperature condition is satisfied (YES in both S20 and S26) and the clothing condition is satisfied (YES in S30), the state of the terminal device 10 changes from the released state The state is changed to the allowable state (S50). On the other hand, if at least one of the body temperature condition and the clothing condition is not satisfied (NO in at least one of S20, S26, and S30), the state of the terminal device 10 is maintained in the released state. In this case, the operator cannot operate the terminal device 10 via the operation reception screen. A worker cannot work within a predetermined area. It is possible to prevent a worker who does not meet the conditions for entering the predetermined area from working in the predetermined area.

Further, for example, a situation is assumed in which the entry of a worker into a predetermined area is determined based on a preset threshold value. According to the configuration of the present embodiment, depending on such a situation, it is possible to restrict the worker's work within the predetermined area by the determination in S20 of FIG. 3 using the absolute threshold value Tth1. Also, for example, there may be individual differences in the body temperature of workers. According to the configuration of the present embodiment, the threshold considering individual differences in the worker's body temperature is calculated as the sum of the average body temperature Ta calculated from the transition information indicating the transition of the worker's body temperature and the average threshold Tth2. can be done. Then, by the judgment in S26 of FIG. 3, which takes into consideration individual differences in the body temperature of the worker, it is possible to limit the worker's work within a predetermined area.

Further, according to the configuration of the present embodiment, the terminal device 10 authenticates the operator who operates the terminal device 10 based on the judgment in S4 of FIG. In addition to the body temperature condition and the clothing condition, the successful authentication of the worker can be added as a condition for permitting the worker to work within the predetermined area.

In addition, the manager of a predetermined area requires various conditions for workers to enter, and for example, a situation is assumed in which the manager decides the relative merits of each of the various conditions. For example, the various conditions include the condition that the wearer is wearing the wearer, the condition that the wearer is not soiled, and the like. Then, it is assumed that the priority of the condition that the clothing is not soiled is lower than the priority of the condition that the clothing is worn. According to the configuration of the present embodiment, when the condition that the worker is wearing the clothing is satisfied (YES in S30 of FIG. 3), the worker can perform the third type operation, but the clothing is dirty. (YES in S40), a notification sound is output (S42). As a result, it is possible to prompt the worker to take action to satisfy the condition that the worn article is not soiled. In addition, it is possible to suppress the occurrence of a situation in which the operator cannot perform the type 3 operation due to the condition having a relatively low priority being not satisfied.

Further, according to the configuration of the present embodiment, the terminal device 10 stores transition information indicating the transition of the body temperature of the worker in the memory 24 . That is, the terminal device 10 can store the body temperature of the worker in the past. For example, the manager can see the transition of the worker's body temperature indicated by the transition information and use it to manage the physical condition of the worker. Further, in a modified example, the terminal device 10 may store in the memory 24 not only the body temperature of the worker, but also image data representing past images of the worker. For example, a manager can view images of workers at multiple dates and times indicated by the accumulated image data and use them for safety and hygiene management.

Further, for example, a comparative example is assumed in which clothing information is obtained from an image captured by the camera 2 and body temperature is measured by a temperature sensor separate from the camera. According to the configuration of this embodiment, the temperature sensor 2t is integrated with the camera 2, eliminating the need for a separate temperature sensor from the camera. The configuration of the terminal device 10 can be simplified. In addition, the configuration of the above comparative example may be employed in the modified example.

Also, if the body temperature condition is not met, there is a high possibility that the worker is in poor physical condition and urgent measures are required. On the other hand, when the clothing condition is not met, it is less likely that urgent action is required than when the temperature condition is not met. According to the configuration of the present embodiment, when the body temperature condition is not satisfied (NO in at least one of S62 and S64 in FIG. 4), that is, when there is a high possibility that emergency measures are required, the terminal device 10 An administrator calling screen is displayed and a warning sound is output (S80, S82). As a result, for example, it is possible to prompt the administrator of the predetermined area to take urgent measures.

Further, according to the configuration of the present embodiment, when the terminal device 10 determines that both the body temperature condition and the clothing condition are not satisfied during the work of the worker (NO in all of S120, S126, and S132). ), the state of the terminal device 10 is changed from the permitted state to the canceled state (S160). According to such a configuration, a worker who no longer satisfies both the body temperature condition and the clothing condition while working in the predetermined area (that is, the worker unsuitable for entering the predetermined area) continues to perform the predetermined work. work in the area of

(correspondence relationship)
The terminal device 10 is an example of a “control device” and a “target device”. The body temperature T1, the average body temperature Ta, and the image of the worker are examples of "worker information." The camera 2 is an example of an "acquisition unit". Whether the body temperature T1 is lower than the absolute threshold Tth1 and whether the body temperature T1 is lower than the sum of the average threshold Tth2 and the average body temperature Ta are examples of the "body temperature condition". An example of the 'wearing condition' is that the worker wears predetermined clothing (mask, hat, glasses, etc.). An operation of the terminal device 10 in the allowable state (that is, a third type operation, an operation on the operation reception screen of S50 in FIG. 3) is an example of the "specific operation". The control unit 20 that executes the processes of S20, S26, and S30 in FIG. 3 is an example of the "determining unit." The control unit 20 that executes the process of S50 in FIG. 3 is an example of the "change unit". A locked state and an unlocked state are examples of a “prohibited state”. The sum of the average threshold value Tth2 and the average body temperature Ta is an example of "a value calculated using transition information indicating the transition of the worker's body temperature". The control unit 20 that performs fingerprint authentication in S4 is an example of the "authentication unit". An example of the "second condition" is that the clothing is clean. The control unit 20 that executes the process of S42 in FIG. 3 is an example of the "first notification unit". The control unit 20 that stores the worker's body temperature T1 in S16 is an example of the "storage control unit." The predetermined time determined in S102 of FIG. 5 is an example of the "second time". The information acquired in S112 and S114 of FIG. 5 is an example of "new worker information". The control unit 20 that executes the process of S82 in FIG. 4 is an example of the "second notification unit".

(Second embodiment)
The present embodiment is the same as the first embodiment, except that part of the processing executed before work by the worker is different.

(Before starting work; Fig. 6)
Processing executed by the control unit 20 of this embodiment will be described with reference to FIG. The processes of S202 and S204 in FIG. 6 are the same as the processes of S2 and S4 in FIG. If the control unit 20 determines that the fingerprint authentication has succeeded (YES in S204), the control unit 20 causes a timer (not shown) provided therein to start counting up in S208. The processing from S214 to S226 is the same as the processing from S14 to S26 in FIG.

If body temperature T1 is lower than the sum of average threshold Tth2 and average body temperature Ta (YES in S226), control unit 20 acquires an image of the worker by camera 2 in S228. The subsequent processing of S230 is the same as the processing of S30 in FIG.

If the control unit 20 determines that the clothing condition is satisfied (YES in S230), the process proceeds to S240. In S240, the control unit 20 determines the time difference between the value indicating the timing of acquiring the body temperature T1 in S214 and the value indicating the timing of acquiring the worker image in S228, among the values of the timer started in S208. Determine whether Tg is shorter than a predetermined threshold time TL (eg, 1 second).

If the difference time Tg is shorter than the threshold time TL (YES in S240), the control unit 20 proceeds to S250. If the difference time Tg is equal to or greater than the threshold time TL (NO in S240), the controller 20 proceeds to S260. The processing of S250 is the same as the processing of S50 in FIG. 3, and the processing of S160 is the same as the processing of S60. When the processing of S250 and S260 ends, the processing of FIG. 6 ends.

(Effect of this embodiment)
The fact that the difference time Tg is short, that is, the time between the acquisition of the body temperature T1 (S214) and the acquisition of the clothing information (S228) is relatively short, is the reason why the worker who supplies the body temperature T1 and the clothing information It is highly likely that the same worker is the supplier of the On the other hand, if the difference time Tg is relatively long, there is a high possibility that the worker who supplied the body temperature T1 is different from the worker who supplied the clothing information. According to the above configuration, when the differential time Tg is relatively long and there is a high possibility that the worker supplying the body temperature T1 is different from the worker supplying the clothing information (NO in S240), the terminal device 10 state can be maintained in the released state. For example, it is possible to prevent the second worker from impersonating the first worker and working in the predetermined area. The threshold time TL is an example of the "first time".

(Third embodiment)
(Terminal device 10b; FIGS. 7 and 8)
As shown in FIG. 7, the terminal device 10b of the third embodiment can communicate with three scanners 32,34,36. The three scanners 32, 34, 36 are separate from the terminal device 10b. Each scanner 32, 34, 36 is a device that reads an information code in a predetermined area (for example, inside a factory). Note that the number of scanners is not limited to three, and may be, for example, two or four or more.

As shown in FIG. 8, the terminal device 10b differs in that it further includes a communication interface 11, in that the memory 24 further stores a scanner table 26, and in part of the processing that is executed before work by the worker. It is the same as the first embodiment except for the points. Below, an interface is described as "I/F." A communication I/F 11 is an I/F for executing communication with each scanner 32 , 34 , 36 . The communication I/F 11 is, for example, an I/F for executing communication via a LAN. The LAN may be wired or wireless.

In the scanner table 26, fingerprint authentication information FP2, FP4, FP6 of workers and scanner IDs 32n, 34n, 36n for identifying the scanners operated by the workers are stored in association with each other. For example, the worker identified by the fingerprint authentication information FP2 operates the scanner 32 identified by the scanner ID32n.

Also, each scanner 32, 34, 36 operates in either a sleep state or an allowable state. The sleep state is a state in which the power of the scanner (for example, 32) is turned on, but reception of all operations using the scanner is prohibited. The permitted state is a state in which all operations using a scanner, such as an operation instructing reading of an information code, are permitted.

For example, the worker operates the terminal device 10b before entering the predetermined area. 9, which will be described later, is executed by the terminal device 10b, and when the conditions described later are satisfied, the state of the scanner corresponding to the worker shifts from the sleep state to the allowable state.

(Before starting work; Fig. 9)
The processing from S2 to S42 in FIG. 9 is the same as the processing from S2 to S42 in FIG. The control unit 20 proceeds to S53 when it is determined as NO in S40 or when the process of S42 is completed.

In S53, the control unit 20 identifies from the scanner table 26 the scanner ID stored in association with the fingerprint information that matches the fingerprint information acquired in S2. Then, the control unit 20 transmits, via the communication I/F 11, to the scanner identified by the specified scanner ID, a permission signal requesting that the state of the scanner be changed from the release state to the permission state. This permits operation of the scanner to a worker who meets both body temperature and clothing requirements.

If at least one of the body temperature condition and the clothing condition is not satisfied (NO in at least one of S20, S26, and S30), the control unit 20 skips the process of S53 and proceeds to S60. move on. That is, if at least one of the body temperature condition and the clothing condition is not met, no acceptance signal is sent to the scanner and the scanner is kept in the sleep state. When S60 ends, the process of FIG. 9 ends.

(Effect of this embodiment)
According to the configuration of this embodiment, the terminal device 10b determines whether or not the worker meets the body temperature condition and the clothing condition (that is, the condition for entering the predetermined area). Then, when the above conditions are satisfied, the state of the separate scanner is shifted from the sleep state to the allowable state by the terminal device 10b (S53 in FIG. 9). On the other hand, if the above conditions are not met, the scanner state is maintained in the sleep state. As described above, it is possible to prevent a worker who does not meet the conditions for entering the predetermined area from working in the predetermined area using the scanner.

Further, each scanner 32, 34, 36 operated by the operator merely monitors receipt of the acceptance signal, and does not need to perform various processes of FIG. Therefore, the scanners 32, 34, 36 operated by the operator do not need to be equipped with high-performance CPUs. According to the configuration of the present embodiment, it is possible to use the terminal device 10b to control the states of the scanners 32, 34, and 36 having CPUs with lower processing capabilities than the terminal device 10b.

(correspondence relationship)
Scanners 32, 34, and 36 are each an example of a "target device (and one or more target devices)." A sleep state is an example of a "prohibited state." An operation of reading the information code with the scanners 32, 34, 36 is an example of the "specific operation".

(Configuration of control system 100; FIG. 10)
A configuration of a control system 100 that is another embodiment of the technology disclosed in this specification will be described with reference to FIG. 10 . The control system 100 includes a control server 50 , a gate device 60 and three terminal devices 72 , 74 and 76 . The control system 100 is a system that manages a plurality of workers entering a predetermined area (for example, factory, office, etc.) and a plurality of terminal devices 72, 74, 76 operated by the workers. be. Each terminal device can operate in either a locked state or an allowed state. The control server 50 is configured to be able to communicate with the gate device 60 and each terminal device 72 , 74 , 76 . Note that the number of terminal devices is not limited to three, and may be, for example, two or four or more.

The gate device 60 is located at the entrance of a predetermined area, and includes a reading section 60r, a gate thermostat 64, and a gate camera 62. As shown in FIG. The reading unit 60r is a so-called IC card reader. The gate thermostat 64 is positioned on the entrance side of the gate device 60 (that is, on the lower side of the paper surface of FIG. 1), and measures the body temperature of a worker who passes through the gate device 60 and enters a predetermined area. The gate camera 62 is positioned on the exit side of the gate device 60 (that is, on the upper side of the paper surface of FIG. 1), and captures an image of the worker positioned around the gate device 60 viewed from the front.

The worker W2 brings the IC card C2 close to the reading unit 60r of the gate device 60 when entering the predetermined area. As a result, the reading unit 60 r reads the worker ID “ww” for identifying the worker W2 recorded in the IC card C2 and transmits the worker ID “ww” to the control server 50 . When the reading unit 60r reads the worker ID "ww", the gate thermo 64 measures the body temperature T3 of the worker W2. After that, the gate thermo 64 transmits the measured body temperature T3 to the control server 50 . Further, when the reading unit 60r reads the worker ID "ww", the gate camera 62 captures the front image IM2 of the worker W2. After that, the gate camera 62 transmits the captured image IM2 (that is, image data) to the control server 50 .

(Configuration of control server 50; FIG. 11)
The control server 50 includes a communication I/F 51 and a control section 40 . The communication I/F 51 is an I/F for executing communication with each device (reading unit 60r, gate camera 62, gate thermostat 64) of the gate device 60 and each terminal device 72, 74, 76. FIG. The control unit 40 has a CPU 42 and a memory 44 . The CPU 42 executes various processes according to programs 43 stored in the memory 44 . The memory 44 is composed of a volatile memory, a nonvolatile memory, or the like. The memory 44 stores condition information and a worker table 46 . In the worker table 46, worker IDs, terminal IDs, body temperatures, images, and determination results are stored in association with each other for each date. Note that the worker ID and the terminal ID are registered in advance in the worker table 46 by, for example, an administrator of a predetermined area. The determination result is information indicating the result of determination in FIG. 12 to be described later.

(Processing executed by control server 50; FIG. 12)
Processing executed by the control unit 40 of the control server 50 before the worker starts work will be described with reference to FIG. 12 . The processing of FIG. 12 is triggered by receiving a worker ID (for example, “ww”) from the reading unit 60r.

In S<b>302 , the control unit 40 receives the body temperature T<b>3 from the gate thermostat 64 and also receives the image of the worker W<b>2 from the gate camera 62 . After that, in S<b>304 , the control unit 40 determines whether the received worker ID is registered in the worker table 46 . If the received worker ID is not registered in the worker table 46 (NO in S304), the worker identified by the received worker ID (eg W2 in FIG. 10) should enter the factory. Determining that it is not, the control unit 40 skips the processing from S320 onwards and ends the processing of FIG.

Further, when the received worker ID is registered in the worker table 46 (YES in S304), the control unit 40 proceeds to S320. S320 is the same as T20 in FIG. 3 except that the body temperature T3 received from the gate thermostat 64 in S302 is used. If body temperature T3 is lower than absolute threshold value Tth1 (YES in S320), control unit 40 proceeds to S330. On the other hand, when body temperature T3 is equal to or greater than absolute threshold value Tth1 (NO in S320), control unit 40 skips S330 and S350 and proceeds to S370.

The processing of S330 is the same as S30 of FIG. 3 except that the image received from the gate camera 62 is used in S302. If the control unit 40 determines that the clothing condition is satisfied (YES in S330), the process proceeds to S350. On the other hand, when the control unit 40 determines that the clothing condition is not satisfied (NO in S332), the control unit 40 skips S350 and proceeds to S370.

In S<b>350 , the control unit 40 identifies the terminal ID stored in association with the received worker ID from the worker table 46 in the memory 44 . And the control part 40 transmits a permission signal to the terminal device (for example, 72 of FIG. 10) identified by specified terminal ID via communication I/F51. The permission signal is information for changing the state of the terminal device from the locked state to the permitted state. As a result, the state of the terminal device shifts from the locked state to the permitted state. A worker can operate a terminal device to work within a predetermined area. After the process of S350 is completed, the process proceeds to S370.

In S370, the control unit 40 stores in the worker table 46 the determination results indicating the determination results of S320 and S330 in association with the received worker ID. As shown in FIG. 11, the determination results are a value "G" indicating that both the body temperature condition and the clothing condition are satisfied, and a value "G" indicating that at least one of the body temperature condition and the clothing condition is not satisfied. and the value "N" indicating that When the process of S370 ends, the process of FIG. 12 ends.

With such a configuration, the control server 50 can be used to control the state of one or more terminal devices 72 , 74 , 76 .

(correspondence relationship)
The control system 100 and the control server 50 are examples of the "control system" and the "control device", respectively. Terminal devices 72, 74, and 76 are examples of "one or more target terminals."

Specific examples of the technology disclosed in this specification have been described above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. Modifications of the above embodiment are listed below.

(Modification 1) The first condition can be changed according to the rules of the factory where the terminal device 10 is operated. In this modification, the wear condition may include whether the worker is wearing safety shoes, wearing a helmet, wearing appropriate work clothes, wearing a safety belt, etc. . Also, the first condition may include the complexion of the worker.

(Modification 2) In the first embodiment, the determinations of S20 and S26 in FIG. 3 may be performed, and the determination of S30 may not be performed. Further, the judgments of S20 and S26 of FIG. 3 may not be executed, and the judgment of S30 may be executed. Generally speaking, the "first condition" may include at least one of the body temperature condition and the wearing condition.

(Modification 3) In the first embodiment, either one of S20 and S26 in FIG. 3 may be determined. In this modified example, either the “preset threshold value” or the “value calculated using transition information” can be omitted. In another modification, instead of the average body temperature value, it may be determined whether the body temperature T1 is equal to or greater than the sum of the average threshold value Tth2 and the body temperature of the previous day. In that case, the previous day's body temperature is an example of "change information."

(Modification 4) The processes of S2 and S4 in FIG. 3 can be omitted. In this modified example, the "authentication unit" can be omitted. Also, in another modification, instead of fingerprint authentication in S2 and S4, biometric authentication using other biometric information such as iris may be used to authenticate the worker. Furthermore, in another modified example, a password entered by the worker may be used to authenticate the worker. Biometric authentication using other biometric information and password authentication are examples of processing implemented by the “authentication unit”.

(Modification 5) The processing of S40 and S42 in FIG. 3 can be omitted. In this modified example, the "second condition" can be omitted. In another modification, the "second condition" may be, for example, "wearing a mask".

(Modification 6) The transition information in the memory 24 in the first embodiment and the information for each date in the worker table 46 in the third embodiment can be omitted. In this modified example, "database" can be omitted. Further, in the first embodiment, the timing for storing the body temperature T1 as transition information is not limited to the timing of S16, and may be, for example, the timing after S50.

(Modification 7) In the first embodiment, the process of FIG. 5 may not be executed. In this modified example, "new worker information" can be omitted.

(Modification 8) In the first embodiment, the process of FIG. 4 may not be executed. In this modified example, the "first notification unit" can be omitted.

In addition, "below" in this specification includes the case where the value to be compared is included (i.e., the target value or less), and the case where the value to be compared is not included (i.e., lower than the target value). It is a concept that indicates either.

Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims as of the filing. In addition, the techniques exemplified in this specification or drawings can simultaneously achieve a plurality of purposes, and achieving one of them has technical utility in itself.

2: camera 2t: temperature sensor 4: display unit 6: operation unit 8: fingerprint acquisition unit 9: notification units 10, 10a, 10b, 72, 74, 76: terminal devices 11, 52: communication I/F
20, 40: control units 22, 42: CPU
24, 44: memory 26: scanner tables 30, 43: programs 32, 34, 36: scanner 46: worker table 50: control server 60: gate device 60r: reading unit 62: gate camera 64: gate thermostat 100: control system

Claims (13)

a controller,
an acquisition unit that acquires worker information about a worker from a worker working within a predetermined area;
a determination unit that determines whether or not the first condition using the worker information and for the worker to enter the predetermined area is satisfied;
When the first condition is satisfied, the state of the target device operated by the worker within the predetermined area is changed from a prohibition state of prohibiting acceptance of a specific operation from the worker to a state from the worker. A change unit that changes to an allowable state that allows acceptance of the specific operation, wherein the specific operation is an operation for the worker to work within the predetermined area, and the first condition is not satisfied, the state of the target device is maintained in the prohibited state. The worker information includes at least one of body temperature information indicating the body temperature of the worker and clothing information indicating the clothing worn by the worker,
The first condition is
a body temperature condition using the body temperature information;
clothing conditions using the clothing information;
2. The controller of claim 1, comprising at least one of: The control device according to claim 2, wherein the acquisition unit analyzes an image captured by a camera to acquire the worker information including the body temperature information and the clothing information. The body temperature condition is
a condition where the body temperature indicated by the body temperature information in the worker information is below a preset threshold;
a condition in which the body temperature indicated by the body temperature information in the worker information falls below a value calculated using transition information indicating transitions in body temperature of the worker;
4. A control device according to claim 2 or 3, comprising at least one of The determining unit determines that the first condition is satisfied when both the body temperature condition and the clothing condition are satisfied,
5. The determination unit according to any one of claims 2 to 4, wherein the determining unit determines that the first condition is not satisfied when at least one of the body temperature condition and the clothing condition is not satisfied. Control device. The determination unit
It is determined that the first condition is satisfied when the body temperature information and the clothing information are obtained within a predetermined first time period and both the body temperature condition and the clothing condition are satisfied. death,
When the body temperature information and the clothing information are not acquired within the first time period, the first condition is not satisfied even if both the body temperature condition and the clothing condition are satisfied. 6. The control device according to claim 5, which determines that A first notification unit that performs a predetermined first notification when the body temperature condition is not satisfied, wherein the first notification is performed when the body temperature condition is satisfied and the clothing condition is not satisfied. 7. The control device according to claim 5 or 6, further comprising the first notification unit that does not execute. further comprising an authentication unit that authenticates a specific worker,
2. From claim 1, wherein the changing unit changes the state of the target device from the prohibited state to the permitted state when authentication of the specific worker is successful and the first condition is satisfied. 8. The control device according to any one of 7. When the first condition is satisfied and a second condition for the worker to enter the predetermined area, the second condition different from the first condition is not satisfied 9. The control device according to any one of claims 1 to 8, further comprising a second notification unit that performs a predetermined second notification. The control device according to any one of claims 1 to 9, further comprising a storage control unit that stores the acquired worker information in a database when the worker information is acquired from the worker. Further, the acquisition unit acquires new worker information from the worker after a predetermined second time has passed since the state of the target device was changed from the prohibited state to the permitted state,
The determination unit further uses the new worker information to determine whether the first condition is satisfied,
11. The changing unit further changes the state of the target device from the permitted state to the prohibited state when the first condition using the new worker information is not satisfied. or the control device according to claim 1. The control device according to any one of claims 1 to 11, wherein the target device is a separate device from the control device. A control system comprising a control device and one or more target devices communicable with the control device,
The control device is
an acquisition unit that acquires worker information about a worker from a worker working within a predetermined area;
a determination unit that determines whether or not the first condition using the worker information and for the worker to enter the predetermined area is satisfied;
for changing the state of each of the one or more target devices operated by the worker within the predetermined area from the prohibited state to the permitted state when the first condition is satisfied; A transmission unit that transmits a control signal, wherein the prohibition state is a state in which acceptance of a specific operation from the worker is prohibited, and the allowable state is a state in which acceptance of the specific operation from the worker is prohibited. the specific operation is an operation for the worker to work within the predetermined area; and when the first condition is not satisfied, the control signal is the one or more the transmitting unit that is not transmitted to each of the target devices;
with
each of the one or more target devices is configured to change a state of the target device from the prohibited state to the permitted state when receiving the control signal from the control device;
The control system, wherein the state of the target device is maintained in the inhibited state when the control signal is not received from the control device.

Images