JP2006050277A - Work information management system, portable communication terminal, and work information management method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the outflow of a large amount of work information recorded in a portable terminal due to the missing and theft of a working portable terminal. <P>SOLUTION: A portable telephone communication means is imparted to the working portable terminal. All the work information is managed by a management server. Only the work information of the day is downloaded and stored in the portable terminal. Important detailed information for each working site in the work information is made browsable only within a communication range of communication equipment at the working site. A time limit is set to the work information. The work information is deleted after the time limit. When unauthorized utilization is suspected, positional information of portable communication equipment is obtained. Data including the positional information are transmitted to the registered mail addresses so as to prevent the unauthorized utilization. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a work information management system for obtaining work schedule information and the like from a management server using a mobile communication terminal such as a mobile phone, a mobile communication terminal used for the work information management method, and a work information management method.

  In the industry that provides maintenance services, maintenance workers have portable terminals for maintenance work, check maintenance schedules, and browse maintenance work procedures. Since this portable terminal can be easily carried, there is a high risk of theft or loss. In this case, the maintenance procedure mobile terminal leaks a large amount of customer data for maintenance and know-how for maintenance work that is stored in the mobile terminal rather than the loss of the mobile terminal hardware. There's a problem. In order to protect such data of the portable information terminal, as described in Patent Document 1, the current position of the maintenance worker is acquired with a portable terminal having a position information function, and the position information function is effective. The security is enhanced by enabling the activation of the application and the browsing of the data only when it operates within the allowable range of the preset position.

JP 2003-63750 A

  In the conventional method, the range of error becomes large indoors where the position cannot be accurately detected, and in particular, position information cannot be obtained at work sites where radio waves are blocked, and the application cannot be started and work cannot be performed. In addition, it is necessary to input an action range in advance, and it is impossible to add a sudden work or change an action.

  In order to solve the above problems, a portable communication terminal including a first wireless communication unit connected to a portable communication network according to the present invention and a second wireless communication unit connected to a local radio is a first wireless communication unit. Connected to a management server that stores work schedule information and customer information for work, connection means connected to a wireless control device by a second wireless communication means, and work from the management server Obtaining means for obtaining and storing the work information of the minimum radio control equipment necessary for the operation, work information management means for determining whether or not the obtained work information can be browsed, and the work information such as the management means being at the work site, etc. It is comprised from the work information browsing means which displays the work information acquired when it determines with browsing possible.

In addition, the work information management system according to the present invention includes:
A wireless communication device having a first wireless communication means for connecting to a portable communication network and a second communication means for connecting to a local wireless communication means, and a wireless communication means for communicating with the second wireless communication means And a management server storing radio control device information of the radio control device and work information of the radio control device,
The mobile communication terminal includes a work information obtaining unit that obtains work information of the management server, a work information management unit that determines whether or not the obtained work information can be browsed, and a work information when the work information management unit determines that viewing is possible. Is composed of work information browsing means for displaying and wireless control device detection means for detecting devices communicable with the second wireless communication means,
The work information management means of the mobile communication terminal determines that browsing is possible when the wireless control device information in the work information is detected by the wireless control device detection means, and the work information viewing range is defined as the wireless reachable range of the wireless communication control device. Is configured to do.

  The mobile communication terminal in the work information management system according to the present invention includes a mobile terminal ID, and the work information of the wireless control device stored in the management server is created for each mobile terminal ID of the mobile communication terminal. Includes radio control device information, and the radio control device information is configured to include only the radio control device information scheduled to perform the work in the work information.

  Further, the management server in the work information management system according to the present invention is provided with expiration date adding means for adding expiration date information to the work information, the mobile communication terminal has a clock function, and the work information management means of the mobile communication terminal has a clock function. A function to compare the current time obtained from the work time and the expiration date of the work information is provided, and the work information is erased when the work information is outside the expiration date or after the work is finished and the work report is given. Yes.

  The mobile communication terminal in the work information management system according to the present invention includes a common key that is different for each mobile communication terminal, and a decryption unit that decrypts the encrypted data using the common key, and the management server includes a plurality of mobile communication terminals. A storage means that associates a common key for each portable terminal ID and an encryption means are provided, and the management server encrypts work schedule information and work information for each worker using an encryption means using a public key for each portable communication terminal. And transmitted to the mobile communication terminal.

  In addition, the mobile communication terminal in the work information management system according to the present invention has position information acquisition means, acquires position information by the position information acquisition means in response to a request from the management server, transmits the position information to the management server, and manages An emergency contact mail address is registered for each portable terminal ID in the server, and the management server has password management means for registering and managing a password set for each portable terminal ID of the portable communication terminal. The management means requests the mobile communication terminal requesting connection to transmit a password, and notifies the emergency contact e-mail address of the location information together with the unauthorized use notification when the correct password is not input within a predetermined number of times. It is configured as follows.

  With the work information management system of the present invention, the most important information of the work information can be viewed only at the work site, and even if the portable communication terminal storing the data related to the work instructions is stolen and lost, it has passed to a third party. However, the work information cannot be easily seen, and the outflow of the work information can be prevented. Also, even if the work information can be known by analyzing data in the mobile communication terminal, for example, only one day of work information is recorded in the mobile communication terminal, so a large amount of information leaks. Can be prevented. Further, since the suspected unauthorized access to the management server is immediately notified by e-mail to, for example, a boss or the like, unauthorized use can be detected at an early stage, and work information data can be prevented from being leaked due to unauthorized access. Furthermore, in the present invention, since the amount of work information to be stored is small, a mobile phone with a small memory capacity can be used as a work terminal that can safely obtain work data on the go.

  According to the present invention, it is possible to provide a work information management system that is safe and easy to use.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram showing Embodiment 1 according to the present invention. 1 is a mobile communication terminal such as a mobile phone, 2 is a management server, 3 is a mobile phone communication network, 4 is a network such as the Internet, 5 is a server of a mobile phone carrier that connects the mobile phone communication network and the Internet, and 6 is a work site. Indicates a wireless control terminal (or device) to be installed. Since the cellular phone carrier server 5 is not the object of the present invention, the description thereof is omitted.

  The radio control terminal (or device) 6 has a local radio communication unit 31 and communicates with another device having the same radio communication unit. A wireless device ID 32 is a unique ID of the local wireless communication unit 31 or the wireless control terminal 6, and is used to determine a communication target device when the local wireless communication unit 31 communicates with another device. . Reference numeral 33 denotes an area where the wireless control terminal 6 can perform local wireless communication. For example, one or a plurality of the radio control terminals 6 of the present invention described above are installed for each work site, and there are a plurality of radio control terminals 6.

  The mobile communication terminal 1 is, for example, a mobile phone or a mobile information terminal, and includes a mobile phone communication means 7 for connecting to the mobile phone communication network, a display means 8 for displaying a screen, a user inputting text, An input unit 9 for selecting a button, a storage unit 12 storing an OS, an application, data, and the like, and a local wireless communication unit 11 for communicating with the wireless control terminal 6 are provided. The clock function 10 is a function for notifying the date and time. For example, the clock function 10 may be based on the time acquired when communicating with a mobile phone base station. A clock function based on the time obtained from the satellite may be used.

  The storage means 9 of the present invention stores a portable terminal ID 14, an information browsing means 15, a file management function 16, work schedule information 17, individual work information 18, and a wireless device confirmation (or detection) means 19. The mobile terminal ID 14 is information unique to the mobile communication terminal 1, and may be, for example, a telephone number in a mobile phone or information previously written in a ROM in a mobile information terminal. Alternatively, the data may be recorded on a secure memory card and attached to the mobile communication terminal 1. The information browsing means 15 is an application for browsing the work schedule information 17 and the individual work information 18, and indicates, for example, a browser. The file management means 16 confirms the presence / absence and validity of the work schedule information 17 and the individual work information 18 necessary for the work, and the work schedule information 17 and the individual work information from the management server 2 as necessary. 18 is downloaded.

  The work schedule information 17 is information including, for example, a work schedule time, a work place, a work name, and the like, and includes the wireless device ID of the wireless control terminal 6. The individual work information 18 is information necessary for performing work at a work site such as a work procedure or work history, for example. The work schedule information 17 and the individual information are created by the management server 2 and downloaded by the file management function. The wireless device confirmation unit 19 detects a wireless device that can communicate with the local wireless communication unit 11 and confirms whether or not the detected wireless device has a wireless device ID 20 registered in the work schedule information 17. Means. As described above, the portable communication terminal 1 of the present invention, for example, is one in which one worker has one kitchen, and there are a plurality of such terminals.

  The management server 2 includes a communication function 21, a connection terminal management function 22, a work information management function 25, a portable terminal ID database 23, a password database 24, a work schedule information database 26, an individual work information database 27, and a wireless device ID database. It has 28 databases. The communication function 21 is a function for providing an information browsing service by connecting to the network 4, and transmitting and receiving data between devices by designating a server name on the network from other devices connected to the network 4. be able to.

  When the connection terminal management function 22 permits access to the management server in the mobile communication terminal 1, the mobile terminal ID of the mobile communication terminal 1 and a password for confirming a user are obtained. It is a means for registering and managing in the database 23 and the password database 24, and prevents unauthorized mobile communication terminals 1 and users from accessing data in the management server 2. The mobile terminal ID of a stolen or lost mobile communication terminal is registered with an investigation required flag, and special processing is performed when a connection request is received from a mobile communication terminal having the corresponding mobile terminal ID. Also good.

  In the wireless device ID database 28, the wireless device ID 32 of the wireless control terminal 6 at each work site is registered. The work schedule information base 26 is created for each portable terminal ID, and for example, work time, work place, and work name information are registered. The work schedule information may be created by inputting necessary data by the work schedule manager, or may be automatically generated from the customer information and work history. The individual work information database 27 stores work information necessary for work, for example, customer information, work history for each customer, work procedures for work objects, and the like. The work information management means 25 collects necessary information from the work schedule information database 26, the individual work information database 27, and the wireless device ID database 28, and creates information that can be browsed by the information browsing means 15 of the mobile communication terminal 1. To do.

Hereinafter, the process for obtaining the work schedule information of the mobile communication terminal 1 of the present invention will be described with reference to the process flow diagram of one embodiment of the present invention shown in FIG. In addition, the same number is attached | subjected to the same thing as FIG. 1, and description is abbreviate | omitted.
First, when the information browsing unit 15 of the mobile communication terminal 1 is activated 601, the information browsing unit 15 requests work schedule information from the file management function 16. When there is no valid individual work schedule information 18, for example, when there is no work schedule information on the scheduled work date or when the work schedule information has expired, the file management function 16 carries it to the management server 2. The terminal ID and the connection request are transmitted 605, and when there is valid individual work schedule information 18, the work schedule information 17 is passed 615 to the information browsing means.

  When the management server 2 receives the mobile terminal ID and the connection request, the connection terminal management function 22 confirms whether the transmitted mobile terminal ID is registered, and transmits the password request 606 if it is registered. If not registered, for example, a notification that connection cannot be made may be transmitted, or the connection request may be ignored. The file management unit 16 that has received the password request 606 passes the password request 607 to the information browsing unit 15.

  The information browsing unit 15 that has received the password request 606 displays a password input screen. When the user inputs a password by the input unit 9 and selects a transmission button, the information browsing unit 15 passes the password 609 to the file management unit 16. The file management unit 16 transmits 610 a password to the management server. The management server 2 uses the connection terminal management function 22 to manage the work managed by the work information management function 25 if the password corresponding to the mobile terminal ID received earlier and the received password 610 match 612. The schedule information, the individual work information necessary for performing the work in the work schedule information, and the wireless device ID at the work planned location are transmitted.

  If the sent password does not match the registered password, the wrong password input count is counted. If the password is less than the predetermined count, the management server 2 sends the password request 606 to the mobile communication terminal 1 again. If the predetermined number of times is exceeded, an unauthorized access process described later is performed. When the file management unit 16 receives the work schedule information, the individual work information, and the wireless device ID, the file management unit 16 stores them and passes the work schedule information 615 to the information browsing unit 15. The work browsing means 15 that has received the work schedule information 615 creates display screen data and displays it on the display means 8.

  FIG. 3 shows an example of a work schedule information display screen. Reference numeral 35 denotes a display screen of the display unit 8 of the mobile communication terminal 1, 36 denotes a scheduled work time, and 37 denotes a work site name. The user can check the daily work schedule information by looking at the display screen 35. Furthermore, when the work schedule information includes work items for each work site, for example, when a work site name is selected, a work name to be performed at the selected work site may be displayed.

Next, the process of browsing the individual work information will be described with reference to FIG.
FIG. 4 is an individual information display processing flow according to the embodiment of the present invention. The same parts as those in FIG. 1 and FIG. When the work schedule information is displayed 616, the user of the mobile communication terminal 1 selects an item of individual work information which is detailed work information 401, and the information browsing function is a work site name, individual work An information acquisition request is passed to the file management means 16. The file management means 16 passes a wireless device search command 403 to the wireless device confirmation means 19, and the wireless device confirmation means 19 starts a wireless device search 404 and passes the search result 405 to the file management means 16.

  FIG. 5 shows a processing flow when there is a wireless device within the wireless communication range of the mobile communication terminal 1. The wireless communication confirmation unit 19 of the mobile communication terminal 1 searches for a wireless device via the local wireless communication unit 11. When the wireless control terminal 6 is within the wireless communication range of the mobile communication terminal 1, the wireless control terminal 6 transmits a wireless device ID 32 to notify the mobile communication terminal 1 that wireless communication is possible. The detected wireless device is set as a wireless device detection result 405 in FIG.

  The file management function 16 checks whether or not there is a wireless device whose wireless terminal ID corresponding to the work site name previously received from the information browsing means 15 matches the search result received from the wireless device confirmation means. When there is no matching wireless terminal ID, that is, when the mobile communication terminal 1 is outside the wireless connection range 33 of the wireless control terminal 6 shown in FIG. hand over. The information browsing means 15 to which the notification 407 indicating that the individual work information cannot be viewed is passed, displays a non-viewable screen 408, for example, a screen such as “cannot be displayed at the current position”, and the individual work screen cannot be viewed by the user. To be notified.

  Note that nothing may be displayed as a countermeasure against unauthorized use. On the other hand, when the detected wireless device has a wireless device ID for the designated work place name, that is, the mobile communication terminal 1 is in the wireless connection range 33 of the wireless control terminal 6 shown in FIG. In this case, the file management function passes the individual work information to the information browsing means 15. The information browsing means 15 displays the individual work information 410, and the user of the mobile communication terminal 1 can proceed with work at the work site by viewing this screen.

As described above, the work schedule information and the individual work information can be obtained anywhere in the present invention, and the individual work information can be browsed only at a predetermined place. Therefore, it is important to maintain the convenience of the mobile communication terminal. It is possible to prevent work information from being leaked.
In the above description, there is no restriction on activation of the information browsing means, but user authentication may be performed by password or fingerprint authentication at the time of activation.

Furthermore, FIG. 6 shows a processing flow in the case where an expiration date is added to the work schedule information. FIG. 6 shows an expiration date processing flow of the work information management system which is an embodiment of the present invention. The same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.
When the file management means 16 receives the work schedule information request from the information browsing means 15, the file management means 16 determines whether or not the work schedule information exists, and if there is work schedule information, passes the current date acquisition request 702 to the clock function 10. The date 703 is acquired. Next, the file management function 16 compares the use deadline of the work schedule information with the current date and time 703, and if it is within the use deadline, passes the individual work information 409 to the information browsing means, and if the use deadline has passed, the work schedule information is passed. And all related individual information and wireless device ID are deleted.

  After all these are deleted, a connection request 604 is transmitted to the file management server 2 assuming that there is no work schedule information. Hereinafter, since it is the same as FIG. 2, description is abbreviate | omitted. According to the present invention, it is possible to always obtain new information without accumulating excess work information past the scheduled work date in the mobile communication terminal, and to minimize outflow of work information due to loss or theft of the mobile communication terminal.

  Next, an operation example of the present invention will be described with reference to FIGS. FIG. 7 shows an example of a display screen of the mobile communication terminal according to the second embodiment of the present invention. (1) of FIG. 7 shows a display screen example of work schedule information of the mobile communication terminal 1a, and (2) shows a display screen example of work schedule information of the mobile communication terminal 1b. Note that the mobile communication terminal 1a and the mobile communication terminal 1b have the same configuration and functions as the mobile communication terminal 1, and a description thereof will be omitted. 91 indicates a first work site of the mobile communication terminal 1a, and 92 indicates a second work site of the mobile communication terminal 1a. Reference numeral 93 denotes a first work site of the mobile communication terminal 1b, and 94 denotes a second work site of the mobile communication terminal 1a. A connection example of the mobile communication terminal 1a and mobile communication terminal 1b having the work schedule information of FIG. 7 and the radio control terminal 6 is shown in FIG. 8, and will be described below.

FIG. 8 is a diagram for explaining connection between the portable communication terminal and the wireless control device (terminal) according to the second embodiment of the present invention. Reference numerals 1a and 1b denote mobile communication terminals, and reference numerals 6a and 6b and 6c denote wireless control devices. The functions and configurations are the same as those of the mobile communication terminal 1 and the wireless control terminal 6, respectively, and thus description thereof is omitted. Reference numerals 33a, 33b, and 33c denote areas in which the wireless control devices 6a, 6b, and 6c can perform wireless communication.
The place where the wireless control device 6a is located is the work site a, the place where the wireless control device 6b is located is the work site b, and the place where the wireless control device 6c is located is the work site c.

  At the work site a, since the mobile communication device 1a is included in the work schedule information, it can communicate with the wireless control device 6a and can browse the individual work information, but the mobile communication device 1b includes the work schedule information. Therefore, communication with the wireless communication device 6a cannot be performed and the individual work information cannot be browsed. In the work site b, the mobile communication device 1b can communicate with the wireless control device 6b, and the individual work information can be browsed. However, the mobile communication device 1a cannot communicate with the wireless communication device 6a. Individual work information cannot be viewed. Further, at the work site c, both the mobile communication device 1c and the mobile communication device 1b can communicate with the wireless control device 6a, and the individual work information can be browsed. As described above, according to the present invention, work information cannot be obtained at a work site that is not included in the work schedule information, and unauthorized use is not possible.

  FIG. 9 is a functional configuration diagram of the third embodiment which is another embodiment of the present invention. The same parts as those in FIG. 61 of the mobile communication terminal 1 is a common key, 62 is an encryption / decryption means, 65 of the management server 2 is a common key database, and 66 is an encryption / decryption means. The same common key 61 of the mobile communication terminal 1 is stored in the common key database of the management server 2 and is managed in association with the mobile terminal ID by the connection terminal management function. The encryption / decryption means 62 of the mobile communication terminal 1 and the encryption / decryption means 66 of the management server output the same result for the same input. Details of each will be described below.

  When the mobile communication terminal 1 transmits the mobile terminal ID to the management server, the management server 2 transmits a password request to the mobile communication terminal 1 and a common key corresponding to the mobile terminal ID sent from the common key database 65. Take out. When the portable communication terminal 1 receives the password request, it displays a password input screen. When the worker inputs a password and selects a transmission button, the mobile communication terminal 1 encrypts the input password with an encryption unit using a common key, and transmits the encrypted password to the management server 2. The management server 2 decrypts the received encrypted password with the decryption key extracted first, and then authenticates with the registered password.

  If the authentication is OK, the work schedule information corresponding to the received mobile terminal ID is taken out, encrypted with a common key using the encryption means, and the encrypted work schedule information is transmitted to the mobile communication terminal 1 To do. In the mobile communication terminal 1, the received encryption work schedule information is decrypted by the decryption means using the common key. The decrypted work schedule information is stored as a work schedule information file and displayed on the screen by an information display application. According to the present invention, it is possible to transmit and receive a password, work schedule information, and work detailed information with higher security between the mobile communication terminal 1 and the management server.

FIG. 10 is a functional configuration diagram of the fourth embodiment which is another embodiment of the present invention. The same parts as those in FIG. 81 of the mobile communication terminal 1 is a position detection means, for example, means for acquiring the position information of the mobile communication terminal 1 using GPS or a mobile phone base station. When the mobile communication terminal 1 mistakes the password for the management server 2 a predetermined number of times or more, the management server 2 transmits a management server authentication code and a location acquisition request to the mobile communication terminal 1. When the mobile communication terminal determines that the management server 2 is not illegal based on the management server authentication code, the mobile communication terminal acquires location information by the location acquisition means 81 and transmits the location information to the management server 2.
The management server 2 collates the position information with the work schedule information. If the management server 2 exceeds the predetermined range, the management server 2 transmits a URL creation means erasure command together with the management code.

When the mobile communication terminal 1 determines that the management server is not illegal based on the received management code, the mobile communication terminal 1 deletes the URL creation means. Thereby, the mobile communication terminal 1 cannot be connected to the management server 2.
If the location information of the mobile communication terminal 1 is within the work allowable range of the work schedule information, the management server 2 has found that the emergency contact mail address of the mobile terminal ID for which the wrong password has been entered is illegally used. The worker position is transmitted together with the effect. According to the present invention, it is possible to prevent an unauthorized management server from accessing a mobile communication terminal that has not been reported lost or stolen.

1 is a configuration explanatory diagram of a work management system according to a first embodiment of the present invention. It is processing-flow explanatory drawing of the work management system of Example 1 of this invention. It is an example of a screen display of the portable communication terminal of Example 1 of this invention. It is processing flow explanatory drawing at the time of work schedule information acquisition of Example 1 of this invention. It is a portable communication terminal of Example 1 of this invention, and a radio | wireless control apparatus connection process explanatory drawing. It is explanatory drawing of the example of a processing flow of the file management means of Example 1 of this invention. It is an example of a screen display of the portable communication terminal of Example 2 of this invention. It is connection explanatory drawing of the mobile communication terminal of Example 2 of this invention, and a radio | wireless control apparatus. It is composition explanatory drawing of the work management system of Example 3 of this invention. It is composition explanatory drawing of the work management system of Example 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile communication terminal 2 Management server 3 Mobile phone communication network 4 Network 6 Wireless control terminal 7 Mobile phone communication means 8 Display means 9 Input means 10 Clock function 11, 31 Local wireless communication means 14 Mobile terminal ID
15 Information browsing means 16 File management means 17 Work schedule information 18 Individual work information 19 Wireless device confirmation means 21 Communication function 22 Connection terminal management function 25 Work information management function 26 Work schedule information database 27 Individual work information databases 61 and 65 Common key 62 66 Encryption / decryption means 81 Position detection means

Claims (9)

A wireless communication terminal comprising a first wireless communication means for connecting to a mobile communication network, a portable communication terminal comprising a second wireless communication means for connecting to a local radio, and a wireless communication means for communicating with the second wireless communication means A work information management system comprising a control device, a radio control device information of the radio control device, and a management server storing work information of the radio control device,
The mobile communication terminal determines work information obtaining means for obtaining the work information of the management server, work information management means for judging whether or not the obtained work information can be browsed, and the work information management means judges that viewing is possible. Work information browsing means for displaying work information in the case, and wireless control device detection means for detecting a device communicable by the second wireless communication means,
The work information management means determines that browsing is possible when the wireless control device information in the work information is detected by the wireless control device detection means, and the wireless communication control device wirelessly reaches the work information viewing range. Work information management system characterized by its scope.   There are a plurality of the mobile communication terminal and the radio control device, the mobile communication terminal has a mobile terminal ID, and the work information of the radio control device stored in the management server is the mobile terminal ID of the mobile communication terminal. The wireless control device information is created for each operation, and the wireless control device information is included in the work information, and the wireless control device information is only wireless control device information scheduled to perform a work in the work information. The work information management system described.   The management server is provided with expiration date adding means for adding expiration date information to the work information, the portable communication terminal has a clock function, and the work information management means of the portable communication terminal is obtained from the clock function. The comparison function between the time and the expiration date of the work information is provided, and the work information is deleted when the work information is outside the expiration date. Work information management system.   The plurality of portable communication terminals include a common key that is different for each portable communication terminal, and a decryption unit that decrypts encrypted data using the common key, and the management server uses a common key for the plurality of portable communication terminals. A storage unit associated with each portable terminal ID; and an encryption unit. The management server uses the encryption unit to store work schedule information and work information for each worker using a public key for each portable communication terminal. The work information management system according to claim 2, wherein the work information management system is encrypted and transmitted to the mobile communication terminal.   The portable communication terminal has position information acquisition means, acquires position information by the position information acquisition means in response to a request from the management server, transmits the position information to the management server, An emergency contact e-mail address is registered for each terminal ID, and the management server has password management means for registering and managing a password set for each mobile terminal ID of the mobile communication terminal. The means requests the mobile communication terminal requesting connection to transmit a password, and notifies the emergency contact mail address of location information together with notification of unauthorized use when a correct password is not input within a predetermined number of times. The work information management system according to any one of claims 2, 3, and 4, wherein:   6. The work information management means of the portable communication terminal is provided with a function for receiving a command from a management server, and the work information is erased in response to an information erase request for the work information from the management server. The work information management system described.   7. The work information management system according to claim 6, wherein a management server authentication unit is provided in the portable communication terminal, and the management server authenticates the management server before making the erasure request. A mobile communication terminal comprising a first wireless communication means for connecting to a mobile communication network and a second wireless communication means for connecting to a local radio,
The portable communication terminal is connected to a management server on the Internet by the first wireless communication means;
Connection means for connecting to a wireless control device by the second wireless communication means;
Obtaining means for obtaining work information of the wireless control device from the management server;
Work information management means for determining whether or not the obtained work information can be browsed;
Work information A mobile communication terminal comprising: work information browsing means for displaying the obtained work information when the management means determines that browsing is possible. A work information management method for a mobile communication terminal including a first wireless communication unit connected to a mobile communication network and a second wireless communication unit connected to a local radio,
Connecting the portable communication terminal to a management server on the Internet by the first wireless communication means;
Connecting to a wireless control device by the second wireless communication means;
Obtaining work information of the wireless control device from the management server;
Determining whether the obtained work information can be browsed;
A work information management method for a mobile communication terminal, comprising: a step of displaying the obtained work information when it is determined that browsing is possible in the step.

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