JP3723130B2 - Information transmission device for construction machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information transmission apparatus for construction machines, and more particularly to an information transmission apparatus with reduced communication frequency.
[0002]
[Prior art]
In a construction machine such as a hydraulic excavator, the operation information of the machine is stored in the memory in the controller, and this operation information is wirelessly transmitted to a management center using a communication means such as satellite communication, a cellular phone, or a PHS for remote operation. A machine that manages machine information is known. When transmitting machine operation information, the following transmission timing can be considered.
(1) Sent when the machine key switch is turned on.
(2) Sent when the engine is started.
(3) A transmission switch is provided separately, and transmission is performed when the switch is operated.
[0003]
[Problems to be solved by the invention]
Of the operation information transmission timings described above, in the case of (1), in a usage situation where the key switch is turned on and off many times, frequent transmission is performed and communication costs increase. Similarly, in the case of (2), in a usage situation where the engine is started and stopped many times, frequent transmission is performed and communication costs increase. On the other hand, in the case of (3), the number of transmissions can be suppressed, but the switch must be operated each time, and the operation is complicated.
[0004]
In addition, a clock function can be provided in the controller or transmitter of the machine body, and the clock function can be set to perform transmission only once a day. However, in order to take advantage of the clock function, it is necessary to always connect the power source even when the machine is not in operation, and there is a possibility that the battery may be raised when the vehicle is stopped for a long time.
[0005]
Therefore, a technical problem to be solved arises in order to enable periodic transmission while suppressing the transmission frequency regardless of the use state of the machine, and the present invention solves this problem. For the purpose.
[0006]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object, and includes a means for detecting machine operation information, a calculation processing unit and a storage unit, a controller connected to a key switch, and the operation information. In a construction machine information transmitting device comprising means for wirelessly transmitting to a management center, a means for measuring the operating time of the machine is connected to the controller, and the operating time measured by the arithmetic processing unit of the controller is added. provided with a means for comparing the means and operating time of the storage unit of the controller stores the time preset in the nonvolatile memory and summed operating time, when the machine is powered on, first, the non the set comparison time and reads the summed operating time stored in the sexual memory, when operation time of the addition is greater than the set time, the addition of And the operating time and reset the operating time that has been added after the wireless transmission to the control center together with other operation information, whereas, when operating time of the addition is less than the set time, the radio transmission of the operational information continuously measuring and addition uptime without executing, when the key switch off operation, the summed operating time information transmission for a construction machine is configured to turn off the power and then stored in the nonvolatile memory A device is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of the information transmitting apparatus 10, and means 11 for detecting machine operation information, means 12 for measuring machine operation time, a key switch 13, and the like are connected to a controller 20.
[0008]
The controller 20 includes an arithmetic processing unit 21 such as a CPU, a nonvolatile memory 22 as a storage unit, an IO (not shown), and the like. The arithmetic processing unit 21 includes a machine measured by the operating time measuring unit 12. Means 23 for adding the operating time and means 24 for comparing a predetermined set time stored in advance in the nonvolatile memory 22 with the added operating time are provided. Then, the controller 20 wirelessly transmits machine operation information data from the transmission means 25 to the management center in accordance with a control procedure described later, or stores the added operation time in the nonvolatile memory 22.
[0009]
Thus, when the machine is powered on, the operation information detecting unit 11 detects the operation information of the machine and the operation time measuring unit 12 measures the operation time. These operation information and operation time data are read into the calculation unit 21 of the controller 20 and the operation time adding means 23 adds the operation time. As shown in the flowchart of FIG. 2, first, in the case of the first time after the power is turned on, the added operating time (cumulative time) is read from the nonvolatile memory 22 (step 1 → step 2) and set in advance. The set time and the accumulated time are compared by the operating time comparing means 24 (step 3). At this time, if the accumulated time is longer than the set time (including the case where accumulated time = set time), the controller 20 transmits the operation information data from the transmission means 25 to the management center (step 4). Thereafter, the accumulated time so far is reset (step 5).
[0010]
If step 5 is reached, or if it is not the first time in step 1 or if the accumulated time is less than the set time in step 3, jump to step 6 and add the operating time Accumulate (step 6). When it is detected that the key switch 13 is turned off (step 7), the accumulated time is stored in the nonvolatile memory 22 (step 8), and then the machine is turned off (step 9). .
[0011]
For example, when the operating time of the machine per day is 8 hours, if the set time is set to 16 hours, the operation information data is automatically transmitted only once every two days. Thus, the frequency of transmission of machine operation information is suppressed, and communication costs are reduced.
[0012]
It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
[0013]
【The invention's effect】
As described in detail in the above embodiment, the present invention compares the added operation time with a preset set time, and if the added operation time is longer than the set time, machine operation information is obtained. When the operation time is transmitted to the management center and the operation time is shorter than the set time, the operation information is not transmitted wirelessly. When the key switch is turned off, the added operation time is stored in the nonvolatile memory, and then the machine is turned off. Therefore, it is possible to perform regular transmission while suppressing the transmission frequency regardless of the use state of the machine, and it is possible to reduce the communication cost as much as possible.
[Brief description of the drawings]
The figure shows an embodiment of the present invention.
FIG. 1 is a block diagram of an information transmission apparatus.
FIG. 2 is a flowchart showing a control procedure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Information transmitter 11 Operation information detection means 12 Operation time measurement means 13 Key switch 20 Controller 21 Operation processing part 22 Non-volatile memory 23 Operation time addition means 24 Operation time comparison means 25 Transmission means

Claims (1)

Information transmission device for construction machine comprising means for detecting machine operation information, controller having built-in arithmetic processing unit and storage unit, connected to key switch, and means for wirelessly transmitting said operation information to management center A means for measuring the operating time of the machine is connected to the controller, and a means for adding the measured operating time and a means for comparing the operating time are provided in the arithmetic processing unit of the controller, and the memory of the controller is stored. parts as a nonvolatile memory stores the time preset and summed run time, the setting time of the machine power is turned on, first, reads the operation time of said summed stored in non-volatile memory compared time, when operation time of the addition is greater than the set time, wirelessly transmits to the summed operating time to the management center along with other operational information Reset the operating time that has been added after the other hand, when operation time of the addition is less than the set time, the radio transmission of the operational information will continue to measure and addition uptime without executing the A construction machine information transmission device configured to turn off the power after storing the added operation time in a nonvolatile memory when the key switch is turned off.

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