JP4827750B2 - Communication terminal device and local time setting method - Google Patents

Description

  The present invention relates to a communication terminal device mounted on a mobile body for remotely monitoring a mobile body such as a construction machine and capable of setting a local time, and a local time setting method for setting the local time of the communication terminal device. It is.

  Conventionally, in order to monitor a moving body such as a construction machine, a communication terminal device is mounted on the moving body, and the mobile body information such as the position, operating status, and condition of the moving body is transmitted from the communication terminal device to the management device side. On the other hand, the management device has realized a mobile management system that can promptly notify the manager of replacement of regular maintenance parts and the occurrence of abnormalities based on this mobile information, so that appropriate and quick measures can be taken. Yes.

  When trying to expand this mobile body globally, the setting of the local time is different for each site, and the local time cannot be determined uniformly. Therefore, the setting of the local time set in each communication terminal device becomes a problem. For example, in China, there is a longitude difference of about 60 degrees and there is one local time set by one time difference even though there is a time difference of about 4 hours, while in Russia there is a longitude difference of about 170 degrees , Eleven local times are provided.

  When setting the local time, conventionally, communication between the communication terminal device and the management device is established, and the local time is set based on the local time information sent from the management device after the establishment. However, when communication between the communication terminal device and the management device cannot be established, there is a problem that the local time cannot be set.

  In view of this, there has been a technique in which time difference data with GMT (World Standard Time) at a local site is stored in advance in a nonvolatile storage unit, and the local time is set based on the time difference data (see Patent Document 1).

JP 2001-279716 A

However, mobile objects such as construction machines are often assembled on site, and even if the time difference data is stored in advance in the non-volatile storage unit, the communication terminal device is not delivered reliably to the desired site. There was a problem that the local time could not be set reliably.
On the other hand, when the local time is set as it is, there is a problem that an erroneous input or the like is likely to occur and it takes time and effort.

  The present invention has been made in view of the above, and an object of the present invention is to provide a communication terminal device and a local time setting method capable of reliably setting a local time without establishing communication on site. To do.

  In order to solve the above-described problems and achieve the object, a communication terminal device according to the present invention is a communication terminal device mounted on a mobile body and capable of setting a local time, and at the current position of the mobile body. Setting means for setting a correction time difference obtained by subtracting an actual time difference from the world standard time at the current position of the mobile object from a time difference between the world standard time and the local time, a position acquisition means for acquiring the current position, and the position Obtain the actual time difference based on the longitude value acquired by the acquisition means, add the correction time difference set by the setting means from the actual time difference, and set the local time of the communication terminal apparatus based on the added time difference And processing means for performing processing.

  Moreover, the communication terminal device according to the present invention is characterized in that, in the above invention, the setting means sets a connection state of a terminal provided on a harness, which is a wiring connected to the communication terminal device. To do.

  In the communication terminal device according to the present invention as set forth in the invention described above, the setting means is a dip switch.

  In the communication terminal device according to the present invention as set forth in the invention described above, the setting means is an input means for inputting the correction time difference.

  The local time setting method according to the present invention is a local time setting method for setting a local time of a communication terminal device mounted on a mobile body, wherein the world standard time and the local time at the current position of the mobile body are A setting step for setting a correction time difference obtained by subtracting an actual time difference from the world standard time at the current position of the mobile object from the time difference of the mobile object, and the longitude value of the current position of the mobile object acquired by the position acquisition means A processing step of obtaining an actual time difference, adding the correction time difference set by the setting step from the actual time difference, and performing a setting process of the local time of the communication terminal device based on the added time difference. And

  Further, in the local time setting method according to the present invention, in the above invention, the setting step sets the correction time difference according to a connection state of terminals provided on a harness, which is a wiring connected to the communication terminal device. It is characterized by doing.

  In the local time setting method according to the present invention as set forth in the invention described above, the setting step sets the correction time difference using a dip switch.

  In the local time setting method according to the present invention as set forth in the invention described above, the setting step sets the correction time difference by inputting the correction time difference.

  In the communication terminal device and the local time setting method according to the present invention, the setting means calculates a real time difference between the world standard time at the current position of the mobile body from a time difference between the world standard time at the current position of the mobile body and the local time. The subtracted correction time difference is set, and the processing means obtains the actual time difference based on the longitude value acquired by the position acquisition means at the current position, and adds the correction time difference set by the setting means from the actual time difference, The local time setting process of the communication terminal is performed based on the added time difference, so even if communication with the management server has not been established, the local time is surely initialized. be able to.

  Hereinafter, a communication terminal apparatus and a local time setting method which are the best mode for carrying out the present invention will be described.

(Embodiment 1)
1 is a diagram showing a schematic configuration of a mobile monitoring system including a communication terminal device according to Embodiment 1 of the present invention. In this mobile body monitoring system, mobile bodies 1 such as a plurality of construction machines are geographically dispersed, and each mobile body 1 and management server 4 are connected via a communication satellite 2, a ground station 3, and a network N such as the Internet. Communication connection. An administrator terminal 5 that is a terminal of the administrator of the mobile unit 1 is connected to the network N. The moving body 1 transmits the moving body information, which is vehicle information including the position information of the moving body and the operating information indicating the operating time and operating status, to the management server 4.

  The moving body 1 has a moving body monitoring device 10 and is connected to a GPS sensor 16 and a transceiver 17. Here, the mobile body monitoring device 10, the GPS sensor 16, and the transmitter / receiver 17 correspond to a communication terminal device. The GPS sensor 16 detects self-position information based on information sent from a plurality of GPS satellites 6 via the antenna 16a, and the mobile body monitoring device 10 acquires this self-position information. The transceiver 17 is communicatively connected to the communication satellite 2 via the antenna 17 a and performs transmission / reception processing between the mobile monitoring device 10 and the management server 4.

  The moving body 1 has a work machine 21 such as a bucket, and is driven and controlled by the work control unit 20. The moving body 1 has an engine 31 and is driven and controlled by the engine control unit 30. The engine 31 is a drive source for moving the vehicle body, and is connected to a generator (alternator) 33 and stores electric energy in the battery 34. The setting unit 22 performs various settings for the work machine 21 by the operator of the moving body 1. In particular, the setting unit 22 sets a work lock that locks the drive of the work machine, and an engine lock that prohibits engine restart. Is possible. The key switch 32 turns on the electrical component and generates an engine start signal.

  The mobile body monitoring device 10 is connected to the work machine control unit 20 and the engine control unit 30 and acquires operation information of the work machine and the engine, and the acquired operation information is stored in the storage unit 15 as a part of the mobile body information 15a. Remember. In addition, the moving body monitoring apparatus 10 monitors the output voltage of the generator 33, acquires operation information indicating whether the engine 33 is in an on state or an off state, and stores it in the storage unit 15 as part of the moving body information 15a. The moving body information 15a includes position information acquired from the GPS sensor 16. In addition, the mobile body information 15a includes the instruction content transmitted from the management server 4 side. In particular, when the start lock command for prohibiting engine start is issued from the management server 4 to the moving body, and the mobile body monitoring device 10 receives this start lock command, the control unit 11 The start-up lock is performed, and this lock state is stored as a part of the moving body information in the storage unit 15. Moreover, the lock state by the setting part 22 is also memorize | stored as mobile body information.

  As described above, the management server 4 can issue a start lock command for prohibiting restart of the engine, for example, to the mobile body 1, and the mobile body monitoring device 10 that has received this start lock command The restart of the engine 31 can be forcibly prohibited by always setting the starter signal to be restarted to the cutoff state. The management server 4 can also issue a release command for releasing the start lock.

  The control unit 11 includes a communication control unit 12, a clock 13, and a local time setting processing unit 14, and transmits the acquired mobile body information 15 a to the management server 4 side under the control of the communication control unit 12. . The clock 13 measures the world standard time and the local time, and the local time is set by the local time setting processing unit 13.

  The mobile body 1 is electrically connected to each part in the mobile body 1 by a harness H. On the harness H, there are terminals T1a, T1b, T2a, T2b for setting correction time differences. The wiring to be connected is connected in the moving object monitoring apparatus 10. Here, the correction time difference is a value obtained by subtracting the actual time difference between the world standard time at the current position of the mobile body from the time difference between the world standard time at the current position of the mobile body 1 and the local time. For example, as shown in FIG. 2, it is shown as 2-bit information depending on the connection state of the terminals T1a and T1b and the terminals T2a and T2b. That is, the correction time difference is set depending on the combination of the connection states of the terminals T1a and T1b and the terminals T2a and T2b being open or short (ground). For example, if the terminals T1a and T1b are open and the terminals T2a and T2b are short-circuited, a correction time difference of +1 hour is set. The terminals T1a, T1b, T2a, and T2b are provided on the harness H, and when the moving body 1 is assembled at the local factory, the terminals T1a, T1b, T2a, and T2b are connected to the local factory. In the 2-bit information shown in FIG. 2, correction time differences of −1 hour, 0 hour, +1 hour, and +2 hour are set.

  Here, the local time setting processing procedure by the local time setting processing unit 14 will be described with reference to the flowchart shown in FIG. The precondition in FIG. 3 is that the connection states of the terminals T1a, T1b, T2a, and T2b are set, and the setting unit 22 instructs the start of the local time setting process. The local time setting process is pop-up displayed by the control unit 11 at the time of initial setting at the time of assembly or inspection at the factory.

  In FIG. 2, when receiving an instruction for local time setting processing from the setting unit 22, the local time setting processing unit 14 reads correction information (step S101). Reading the correction information in the first embodiment is detecting the connection state of the terminals T1a, T1b, T2a, T2b and acquiring the correction time difference from the detection result.

  Thereafter, the local time setting processing unit 14 causes the GPS sensor 16 to acquire position information, and acquires the longitude of the position information (step S102). Thereafter, the local time setting processing unit 14 further divides the acquired longitude value by 15 and calculates an actual time difference which is a value obtained by rounding down the decimal part of the result of division (step S103).

  Thereafter, the local time setting processing unit 14 adds the correction time difference to the actual time difference calculated in step S103, sets the local time of the timepiece 13 using the added value as the time difference (step S104), and ends this process. .

  For example, in China, there is a time difference of about 4 hours between the local time and the actual time difference. For each local factory, the actual time difference is obtained based on the longitude value obtained by the GPS sensor 16, and the local time with respect to the actual time difference is calculated. The time difference from the time can be corrected locally by the correction time difference. In this case, since all the local times are set locally, the local time of the communication terminal device can be surely initialized. Moreover, even if communication between the mobile unit and the ground station 3 on the management server side is not established, the initial setting of the local time can always be performed.

  Although the correction information described above is shown as 2 bits, the present invention is not limited to this, and when the amount of correction information is large, the number of bits may be increased corresponding to the amount of information. May be reduced.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. In the first embodiment, the correction information is set according to the connection state of the terminals on the harness H. However, in the second embodiment, the correction information for the correction time difference is set by the dip switch SW. Yes.

  That is, as shown in FIG. 4, the mobile monitoring device 10 is provided with a 2-bit dip switch SW, and the correction time difference is set according to the setting state of each switch SW1, SW2. Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same components. In this case, the local time setting processing unit 14 reads the setting information of the dip switch SW in step S101.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. In the first embodiment described above, the correction information is set according to the connection state of the terminals on the harness H. However, in this third embodiment, the correction information 15b is set on the site by the setting screen of the setting unit 22 in FIG. Is set in. In this case, the local time setting processing unit 14 reads the correction information 15b set and stored by the setting unit 22 in step S101.

  As shown in FIG. 5, the correction information 15 b is not stored on the site using the external interface 40 provided in the mobile object monitoring device 10 and the external inspection device 41 connected externally via the communication cable 42 instead of the setting unit 22. You may make it set in.

  Moreover, although Embodiment 1-3 mentioned above demonstrated as an example the system by which the mobile body 1 side and the management server 4 side were connected by communication via the communication satellite 2, it is not restricted to this, The mobile body 1 As long as it can transmit and receive to / from the remote management server 4, wireless communication using a general terrestrial wireless device such as terrestrial wireless communication or mobile communication is used. It may be a system.

It is a schematic diagram which shows the structure of the mobile body monitoring system containing the communication terminal device concerning Embodiment 1 of this invention. It is a figure which shows an example of the correction | amendment time difference set by the connection state of the terminal on a harness. It is a flowchart which shows the local time setting process sequence by the communication terminal device concerning Embodiment 1 of this invention. It is a schematic diagram which shows the structure of the mobile body monitoring system containing the communication terminal device concerning Embodiment 2 of this invention. It is a schematic diagram which shows the structure of the mobile body monitoring system containing the communication terminal device concerning Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile 2 Communication satellite 3 Ground station 4 Management server 5 Administrator terminal 6 GPS satellite 10 Mobile monitoring device 11 Control unit 12 Communication control unit 13 Clock 14 Local time setting processing unit 15 Storage unit 15a Mobile unit information 15b Correction information 16 GPS sensor 16a, 17a Antenna 17 Transmitter / receiver 20 Working machine control unit 21 Working machine 22 Setting unit 30 Engine control unit 31 Engine 32 Key switch 33 Generator 34 Battery 40 External interface 41 External inspection device N Network H harness T1a, T1b, T2a , T2b terminal SW DIP switch

Claims (8)

A communication terminal device mounted on a mobile body and capable of setting the local time,
Setting means for setting a correction time difference obtained by subtracting an actual time difference between the world standard time at the current position of the mobile object from a time difference between the world standard time at the current position of the mobile object and the local time;
Position acquisition means for acquiring the current position;
The actual time difference is obtained based on the longitude value obtained by the position obtaining means, the correction time difference set by the setting means is added from the actual time difference, and the local time of the communication terminal device is obtained based on the added time difference. Processing means for performing the setting process;
A communication terminal device comprising:   The communication terminal apparatus according to claim 1, wherein the setting unit sets a connection state of terminals connected to the communication terminal apparatus and provided on the harness.   The communication terminal apparatus according to claim 1, wherein the setting unit is a dip switch.   The communication terminal apparatus according to claim 1, wherein the setting unit is an input unit that inputs the correction time difference. A local time setting method for setting a local time of a communication terminal device mounted on a mobile body,
A setting step for setting a correction time difference obtained by subtracting an actual time difference between the world standard time at the current position of the mobile object from a time difference between the world standard time at the current position of the mobile object and the local time;
The actual time difference is obtained based on the longitude value of the current position of the moving object acquired by the position acquisition means, the correction time difference set by the setting step is added from the actual time difference, and the correction time difference set by the setting step is added. Processing steps for setting the local time of the communication terminal device;
A local time setting method.   The local time setting method according to claim 5, wherein the setting step sets the correction time difference according to a connection state of a terminal provided on a harness, which is a wiring connected to the communication terminal device.   The local time setting method according to claim 5, wherein the setting step sets the correction time difference using a dip switch.   The local time setting method according to claim 5, wherein the setting step sets the correction time difference by inputting the correction time difference.

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