JPH03176252A - Key managing system for heavy construction equipment - Google Patents

Abstract

PURPOSE:To prevent a heavy equipment accident effectively by constituting a key managing system by a card writer, an ID card, a card reader, a seating detection sensor and an engine driving means for controlling the driving of an engine by the output from the above card reader and the output from the seating detection sensor. CONSTITUTION:In a construction site office, register data such as qualification for operation, belonging company, entry date, etc. and the qualification code of qualification for operation are entried on an ID card 5 by a card writer 2, and the ID card 5 is delivered to an operator with a key 3. The operator applys the ID card 5 to a card reader 6 on the operation seat of a heavy equipment operated to check up the qualification for operation by means of a microcomputer 8, upon proper qualification, the computor 8 issues, simultaneously, a ultrasonic sensor 10 confirms the seating of the operator to issue the signal of the seating, and an engine 12 is started by an engine control circuit 11. After starting the engine, as the engine is stopped when about one minute passes, the card 5 is pulled out quickly after the engine is started.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a key management system for heavy construction equipment.

[Conventional technology]

In recent years, the proportion of heavy machinery work in the construction industry has increased, and along with this, the number of accidents caused by heavy machinery has also increased.

Most of these are caused by unqualified operators operating the equipment or by the heavy equipment running out of control when the operator leaves his or her seat.

Traditionally, keys for heavy machinery have been managed in offices, etc., and although a check can be made when the key is taken out, it is up to the worker who took the key to decide who will receive the key.

[Problem to be solved by the invention] Various measures have been taken to prevent heavy equipment from running out of control when unqualified workers or when the operator leaves his/her seat. There was no effective method.

SUMMARY OF THE INVENTION An object of the present invention is to provide a key management system for heavy construction machinery that can eliminate the disadvantages of the conventional example and effectively prevent accidents with heavy machinery.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a card-like device connected to an office computer provided in a field office, etc., and an ID card written by the card writer and handed to an operator together with the key. A card reader that is installed in the operator's seat of heavy machinery and is connected to a microcomputer to read the ID card, a seating detection sensor such as an ultrasonic sensor, and a card reader output via these microcomputers. It consists of an engine drive means that controls the engine drive based on the output of a seat detection sensor, or a human power means for personal identification using a keyboard, fingerprint or voice print connected to an office computer installed in a field office, etc. It is equipped with a driver's personal identification input means connected to a microcomputer using key operations or fingerprints or voice prints, a seating detection sensor such as an ultrasonic sensor, and proper input from these driver's personal identification input means. and an engine drive means for controlling the drive of the engine via a microcomputer based on the input from the seating detection sensor.

(Operation) According to the present invention as set forth in claim 1, registration data such as driving qualification, affiliated company, entry date, etc., and the qualification code of the driving qualification can be written on the ID card with a card writer at a field office or the like. This ID card is handed to the operator along with the key, and the operator reads the ID card into a card reader at the driver's seat of the heavy equipment he is driving, inserts the key into the ignition key, and starts the engine.

The engine of a heavy machine will not start unless the microcomputer receives an output indicating the appropriate driving qualification from the ID card and an output from the seat detection sensor indicating that the operator is in the driver's seat.

Furthermore, to prevent the ID card from being left unattended, the engine will automatically stop if the ID card is not removed from the card reader within a certain period of time.

Furthermore, if the operator leaves the driver's seat even during work, the output of the seating detection sensor changes and the engine automatically stops.

According to the present invention as set forth in claims 2 and 3, the personal information of the driver is stored in numerical form in the microcomputer installed in the operator's seat of the heavy equipment, and the operator can read information from the operator's seat of the heavy equipment. The user inputs personal information by operating keys connected to the microcomputer or by using his or her fingerprint or voice on a personal identification input means using a fingerprint or voiceprint.

Then, insert the engine key into the ignition key and start the engine.

The engine of heavy equipment will not start unless the driver's personal information matches what is already stored via the microcomputer and the output from the seat detection sensor indicates that the operator is in the driver's seat.

Furthermore, if the operator leaves the driver's seat during work, the output of the seating detection sensor changes and the engine automatically stops.

〔Example〕 Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram showing a first embodiment of the key management system for heavy construction machinery of the present invention. In the figure, 1 is an office computer installed in a field office, etc. The office computer 1 has a card writer as a peripheral device. 2 is connected, and a key box 4 for storing keys 3 of each heavy machine is also connected. 5 in the figure is an ID card to which the card writer 2 writes information.

The office computer 1 writes and outputs an ID card 5 to a card writer 2, and a key box 4.
The management information for the key 3 used to open and close the door is automatically input into this office computer 1.

In the figure, numerals 6 and 7 are card readers for reading the ID card 5. The card reader 6 is for starting, and the card reader 7 is for inspection.

These card readers 6 and 7 are installed in the driver's seat of heavy machinery at the site, and are connected to microcomputers 8 and 9 such as microprocessors, respectively, and the outputs of these microcomputers 8 and 9 control the driving of the engine 12 of the heavy machinery. The output of the ultrasonic sensor 10 as a seat detection sensor provided in the driver's seat is also introduced into the engine control circuit 11 as an engine driving means.
to be introduced.

Note that instead of the ultrasonic sensor 10, an optical sensor or an infrared sensor may be used as a seating detection sensor. You can also use temperature sensors and pressure sensor limit switches.

FIG. 2 shows the details of such an engine control circuit 11. As is well known as a normal engine drive circuit, a series connection circuit of an ignition key 14 and a starter motor 15 is connected to a DC power source 13 using a battery, and a DC power source A fuel supply pump 16 is connected to 13.

The present invention provides relay 17.1 in such an engine drive circuit.
8.19, the relay 17 connects the output of the ultrasonic sensor 10 and the card reader 6 via the microcomputer 8.
shall be closed when the outputs of relays 18 and 1 are aligned.
9 are connected in parallel with each other, and the relay 17 opens when either the output of the timer 20 for preventing forgetting to remove the card, the seating detection signal output of the ultrasonic sensor 10, or the output of the card reader 6 is exhausted. do.

Further, the relay 19 closes when there is either an output from the card reader 7 via the microcomputer 9 or an output from the start-up inspection timer 21.

The timer 20 for preventing forgetting to remove the card has an ID in the card reader 6.
It is valid for 1 minute after the card 5 is inserted (this time can be set freely with the built-in timer of the microcomputer 9), and the timer 21 for start-up inspection is set for 3 minutes after the engine starts.
It is valid for 0 minutes.

5 and 6 show the external appearance of the control device containing the engine control circuit 11 shown in FIG.
2 is attached to the driver's seat of heavy machinery with a vibration-proof rubber 23 interposed therebetween.

Next, how to use the device will be explained.

As shown in the flowchart in Figure 3, what is carried out at the office is training upon new admission, driving qualification check, issuance of ID card 5, and removal of key 3. ID card 5 includes one for driving and one for inspection. The S-input specifications include (1) driving qualification, name, affiliated company, date of admission as registered data, or inspection qualification, affiliated company, date of admission, (2) qualification code as Driving qualification (4-digit integer *
(2 models), (3) Inspection qualification as inspection code (4-digit integer * common to all models).

In this way, the driving qualification, name, affiliated company, date of entry, or inspection qualification, affiliated company, and date of entry are stored in the office computer 1, and the door of the key box 4 is stored when the key 3 is taken out. Since the opening/closing information is automatically input into the office computer 1 as information, the office computer 1 can centrally manage keys.

The operator takes the ID card 5 and key 3 that have been written on.
I picked it up at the office and headed to the heavy equipment I had to drive.

When the ID card 5 is inserted into the card reader 6 at the driver's seat of heavy equipment, the microcomputer 8 verifies the driver's qualifications, and the microcomputer 8 outputs an output when the driver's qualifications are suitable.

At the same time, the ultrasonic sensor IO confirms that the operator is seated.
Give a seat signal.

As shown in FIG. 4, when the qualification code is input by the ID card 5 and the seating signal is received by the ultrasonic sensor 10, the relay 17 closes and the card reader 6 of the ID card 5
Since the timer 20 to prevent forgetting to remove the battery is activated for one minute after insertion into the engine, the relay 18 is closed, so when the ignition key 14 is turned using the key 3, the starter motor 15 operates, and the fuel supply pump 16 supplies fuel to start the engine. It takes.

After starting the engine, you can remove the ID card 5 immediately, but if you leave it as it is, the timer 2 will start after the one minute has elapsed.
When the output becomes OFF, the relay 18 opens and the engine stops, which prevents you from forgetting to remove it.

At the time of pre-work inspection after starting the engine, the ID card 5 must be inserted into the card reader 7 for inspection.By inserting the ID card 5, the inspection qualification code is referenced in the microcomputer 9, and if appropriate, the ID card 5 is inserted into the card reader 7 for inspection. The output closes the relay 19 and further activates the start-up inspection timer 21.

During this pre-work inspection, it does not matter whether or not the ultrasonic sensor 10 receives a seating signal, and 30 minutes after the engine starts, the output of the timer 21 disappears, the relay 19 opens, and the engine automatically stops.

On the other hand, when the operator leaves his/her seat during heavy equipment work, the signal from the ultrasonic sensor 10 changes to a leave signal, and the relay 18
Since the fuel supply pump 16 is opened, the fuel supply pump 16 is stopped, and the fuel supply to the engine is cut off, so the engine is stopped.

On the other hand, during regular inspections, the relay 19 refers to the inspection qualification code by inserting the ID card 5 into the card reader 7.
It is possible to perform inspection work with the engine running by keeping it closed.

In this case, the engine can be maintained in operation without worrying about leaving the seat or the passage of time.

In addition, as another embodiment, the driver's personal information is inputted into the microcomputer 8.9 in advance, and the driver's personal identification input means by key operation is connected to the microcomputer 8.9, so that the ID card can be used. 5 can also be omitted.

Furthermore, as another embodiment, the driver's personal identification means may not be based on key operations, but may be input means using fingerprints, voice prints, or the like.

Microcomputer installed in the heavy equipment operator's seat 8.9
The personal information of the driver is stored in the form of numbers, etc., and the operator inputs his or her own fingerprint or voiceprint into the personal identification input means using keys or fingerprints or voiceprints connected to the microcomputers 8 and 9 from the driver's seat of the heavy equipment being operated. Call out and enter your personal information.

Then, the engine key 3 is inserted into the ignition key to start the engine 12.

The heavy machinery uses microcomputers 8 and 9 to confirm that the driver's personal information matches what is already stored, and an ultrasonic sensor 10 that is a seating detection sensor to detect that the operator is in the driver's seat. If they are not aligned, the engine 12 will not start.

Further, if the operator leaves the driver's seat even during work, the output of the ultrasonic sensor 10 changes and the engine automatically stops.

〔Effect of the invention〕

As described above, the key management system for heavy construction machinery of the present invention can effectively prevent accidents with heavy machinery because it can exclude unqualified persons from the heavy machinery and automatically stop the engine when the person leaves the seat. be.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the first embodiment of the key management system for heavy construction machinery of the present invention, Fig. 2 is a block circuit diagram of the same as above, Fig. 3 is an overall flowchart, and Fig. 4 shows processing in the heavy equipment driver's seat. Flowchart, FIG. 5 is a front view of the control device provided in the driver's seat, and FIG. 6 is a side view of the same. ■...Office computer 2...Card writer 3...Key 4...Key box 5...ID card 6.7...Card reader 8.9...Microcomputer 10...Super Sonic sensor 11...Engine control circuit 12...Engine 13...DC power supply 14...Ignition key 15...Start motor 1
6...Fuel supply pump 17.18.19...Relay 20...Timer for preventing forgetting to remove 21...Timer for start-up inspection 22...Exterior case 23...Vibration-proof rubber

Claims (3)

[Claims] (1) A card writer connected to an office computer provided in a field office, etc., and an ID card written with the card writer and handed to the operator along with the key;
It is installed in the operator's seat of heavy equipment, and includes a card reader connected to a microcomputer to read the ID card, a seating detection sensor such as an ultrasonic sensor, and card reader output and seating detection via these microcomputers. A key management system for heavy construction equipment, comprising a sensor output and an engine drive means for controlling engine drive. (2) A driver's personal identification input means connected to a microcomputer by key operation, which is installed in the heavy equipment driver's seat, and a seating detection sensor using an ultrasonic sensor or the like;
A key management system for heavy construction machinery, comprising an engine drive means that controls engine drive via a microcomputer based on proper input from the driver's personal identification input means and input from the seating detection sensor. (3) A device installed inside the operator's seat of heavy equipment, including input means for personal identification of the driver using fingerprints, voice prints, etc. connected to a microcomputer, a seat detection sensor using an ultrasonic sensor, etc., and personal identification of the driver. 1. A key management system for heavy construction equipment, comprising an engine drive means for controlling engine drive via a microcomputer based on proper input from an input means and input from a seating detection sensor.