Abstract: A function changing system of construction machinery includes a hydraulic excavator and a base station. The hydraulic excavator is deployed at a construction site and is provided with a rewritable memory storing control programs and/or data required for control of the machinery, a CPU for reading out the control programs from the memory and executing them, and a communications device The base station is provided with a communications device, a center server for identifying the serial number of the hydraulic excavator and transferring information with the control unit, and a database managed by the center server and storing control programs corresponding to the hydraulic excavator. When changing or switching an attachment of the hydraulic excavator, information is transferred with the center server of the base station and the control programs or data stored in the storage unit are rewritten to enable work suited to the changed part.

Abstract: A photothermographic imaging material containing a support having thereon light-insensitive organic silver salt grains, photosensitive silver halide grains, a reducing agent for silver ions and a binder, wherein, (i) each of the organic silver salt grains has a structure having different silver ion dissociation constants at a surface portion and at an inner portion of the grain; (ii) each of the silver halide grains produces a larger number of latent images in a surface portion than in an inner portion of the grain by exposure to light; (iii) each of the silver halide grains produces a larger number of latent images in the inner portion than in the surface portion of the grain after being subjected to a thermal development; and (iv) a surface photographic speed of each of the silver halide grains decreases after being subjected to the thermal development.

Abstract: Construction machine management, permitting operation of a construction machine only under specified conditions and inhibiting its operation in case it is in a state incongruent with preset working conditions. Working conditions for each construction machine are set up by a working conditions setup means, including a geographically divided working area and a working time zone in which a construction machine is allowed to operate in a specified working area. Setup working conditions are stored in a memory means. At the time of starting a construction machine, the status of the construction machine is checked for by a status checkup means which is adapted to check for current position of the construction machine and current time against the working area and working time zone of the setup working conditions.

Abstract: A method and system for managing a construction machine and processing apparatus therefor includes a controller 2 mounted on a hydraulic excavator 1 working in fields. An operating time for each of an engine 32, a front 15, a swing body 13 and a travel body 12 is measured and stored in a memory of the controller 2. The measured data is transferred to a base station computer 3 and stored in a database 100 inside the base station computer 3. The base station computer 3 reads, per hydraulic excavator, the data stored in the database 100 and then prepares and outputs a distribution graph of the number of operated machines with respect to the working time (engine running time) of the hydraulic excavator. While looking at the distribution graph, a machine maker estimates the number of hydraulic excavators to be renewed and estimates the sales quantity of hydraulic excavators, thereby setting up a production plan of hydraulic excavators.

Abstract: A hydraulic excavator periodically measures its current location at predetermined time intervals by the GPS device in an inoperative state where its engine key is in the off position and sends the current location data and time data to a management server by a main controller and communicator. The management server receives the periodically sent location data at its communicator and successively stores it in its memory. The current location data and the measurement time data to provide a location confirmation service by a location information provider. Changes in location can be confirmed on a map, the movement of the hydraulic excavator can be tracked, and assistance can be given for confirmation of location and prevention of theft.

Abstract: To permit grasping operation conditions of a working machine at a control station located at a remote place no matter whether or not a trouble has occurred on the working machine, a CPU of a controller arranged on a hydraulic excavator produces operation data in accordance with signals outputted from operation detecting unit such as various sensors. These operation data are stored in a memory unit on the basis of time outputted from a clock unit, for example, depending upon the day. The operation data stored depending upon the day are outputted from an output unit of the controller to satellite communication terminal equipment, for example, when a key switch has been turned on.

Abstract: To provide an information transmitting device for a construction machine such that operation data of the construction machine can be supplied only as much as needed by its user or the like without unnecessary data, the information transmitting device is provided with an information control device 4, a base station 9 arranged at a remote place, a transmission means such as a communication satellite 6, and a selected data outputting means for selecting and predetermined operation data from operation data collected in an operation data collecting unit 4a of the information control device 4 and transmitting them. The information control device includes an operation data collecting unit 4a and a communication control unit 4b which includes transmitting and receiving parts.

Abstract: A security system of a construction machine of the present invention has a construction machine, a base station and a communication device. The construction machine comprises a data sending and receiving portion for sending first information, a storage portion for storing received information, and a control portion for controlling an operation of the construction machine. The base station receives the first information from the data sending and receiving portion of the construction machine and sends second information to the construction machine and manages the construction machine. It is configured so that the communication device is connected to the base station through a communication network and can send third information to the construction machine through the base station.

Abstract: The position of a working machine is detected, a position signal representing the detected position is transmitted, the position signal is received, management information relating to the working machine is calculated based on the received position signal, and the calculated management information is transmitted to the working machine. Example of management information is type of attachment depending on soil quality, and weather forecasts.

Abstract: A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A [&OHgr;] of the film and a volume resistivity of B [&OHgr;·cm] of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T [cm], the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A [&OHgr;] of the film and the volume resistivity of B [&OHgr;·cm] of the film satisfy a relationship of; A[&OHgr;]'T [cm]>B [&OHgr;·cm]. This film can be prepared by a centrifugal molding method.

Abstract: A construction machine management system includes a receiver provided at a remote location from a plurality of construction machines, which receives information related to the lengths of operating time of the construction machines individually transmitted from the construction machines and a decision-making device that makes a decision as to whether or not there is any over-operated construction machine based upon the operating time information that has been received.

Abstract: A construction machine refueling system receives information transmitted from a construction machine at a receiver provided in a base station, and the construction machine includes a detector that detects a residual fuel amount and a transmitter that, when the residual amount of fuel is less than a specified value, transmits information indicating that fact to the base station.

Abstract: This system is comprised of a hydraulic excavator 1 and a base station 16. The hydraulic excavator 1 is deployed at a construction site and is provided with a rewritable memory 402 storing control programs and/or data required for control of the machinery, a CPU 401 for reading out the control programs etc. from the memory 402 and executing them, and a communications device 42. The base station 16 is provided with a communications device 16a, a management server 17 for identifying the serial number of the hydraulic excavator and transferring information with the control unit, and a database 18 managed by the management server 17 and storing control programs etc. corresponding to the hydraulic excavator such as control programs for each model of the hydraulic excavator. When changing or switching the attachment etc. at the hydraulic excavator etc.

Abstract: A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A [&OHgr;] of the film and a volume resistivity of B [&OHgr;·cm] of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T [cm], the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A [&OHgr;] of the film and the volume resistivity of B [&OHgr;·cm] of the film satisfy a relationship of: A [&OHgr;]×T [cm]>B [&OHgr;·cm]. This film can be prepared by a centrifugal molding method.

Abstract: A working time for each of an engine 32, a front 15, a swing body 13, and a travel body 12 of a hydraulic excavator 1 working in fields is measured. Measured data is stored in a memory of a controller 2 and then transferred to a base station computer 3 via satellite communication, an FD, etc. to be stored in a database 100. At each repair/replacement of a part in each hydraulic excavator, the base station computer 3 calculates, based on the operation data, a replacement time interval of the part on the basis of the working time per section to which the part belongs, and then stores and accumulates it. The base station computer also reads the stored data for each hydraulic excavator, determines, for each part, a replacement rate of the part having the substantially equal replacement time interval, and calculates a target replacement time interval of the part in accordance with the replacement time interval corresponding to a maximum replacement rate.

Abstract: A construction machine rental fee setting system comprises a receiver, provided at a location remote from a construction machine, that receives information relating to the usage conditions and/or the usage environment of the construction machine transmitted from the construction machine, and a rental fee setting device that sets a construction machine rental fee based on the information received at the receiver.

Abstract: A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A [&OHgr;] of the film and a volume resistivity of B [&OHgr;·cm] of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T [cm], the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A [&OHgr;] of the film and the volume resistivity of B [&OHgr;·cm] of the film satisfy a relationship of; A [&OHgr;]×T [cm]>B [&OHgr;·cm]. This film can be prepared by a centrifugal molding method.

Abstract: A construction machine comprises a location detector for detecting location information for the construction machine, a determination device for determining whether or not location information is to be transmitted and outputting a transmission signal if it is determined that information is to be transmitted, and a transmitter for transmitting the detected location information to a base station in response to the transmission signal.

Abstract: A silver salt photothermographic material is disclosed, comprising on a support (a) a light-insensitive organic silver salt, (b) light-sensitive silver halide and (c) a reducing agent capable of reducing a silver ion of the organic silver salt to silver upon heating, wherein when the exposed and thermally processed photothermographic material having a density of 3.0 have been kept at 50° C. and 50% RH for 120 hr., the photothermographic material exhibits a variation of density from 3.0 being within ±0.2.

Abstract: To permit grasping operation conditions of a working machine at a control station located at a remote place no matter whether or not a trouble has occurred on the working machine, CPU 12 of a controller 3 arranged on a hydraulic excavator 1 produces operation data in accordance with signals outputted from operation detecting means 4 such as various sensors. These operation data are stored in a memory unit 13 on a basis of a time outputted from a clock unit 11, for example, depending upon the day. The operation data stored depending upon the day are outputted from an output unit 14 of the controller 3 to satellite communication terminal equipment 2, for example, when a key switch has been turned on.