Abstract: The present invention includes: a preliminary photography unit 521 that performs preliminary photography which is photography at a stage before the main photography for photographing the driving state of a driver of a vehicle using a photographing device 1 that photographs a prescribed range including the face of the driver; and a lighting control unit 522 that lights a lighting device 2 for emitting light which is attached to the photographing device 1 or around the photographing device 1 when the preliminary photography is performed by the preliminary photography unit 521. A control device 5 may be provided with an output unit 523 that outputs a message instructing the driver to look at the lighting device when the preliminary photography is performed by the preliminary photography unit 521.

Abstract: A molten metal feed apparatus which can feed molten metal into a casting apparatus by opening a vessel and which is free from leakage of the molten metal from the opening/closing part of the vessel, provided with a holding vessel having an opening at its bottom and holding a metal material, a lid for closing the opening, a drive means for making the lid move with respect to the holding vessel to open or close the opening, and an induction heating coil for heating the metal material by induction of a current to the metal material in the holding vessel and generating a magnetic field applying to the molten metal a force preventing leakage of the molten metal in the holding vessel from between the opening and the lid.

Abstract: A molten metal feed apparatus which can feed molten metal into a casting apparatus by opening a vessel and which is free from leakage of the molten metal from the opening/closing part of the vessel, provided with a holding vessel having an opening at its bottom and holding a metal material, a lid for closing the opening, a drive means for making the lid move with respect to the holding vessel to open or close the opening, and an induction heating coil for heating the metal material by induction of a current to the metal material in the holding vessel and generating a magnetic field applying to the molten metal a force preventing leakage of the molten metal in the holding vessel from between the opening and the lid.

Abstract: A distributed control device in a decentralized supervisory control system comprises an I/O interface, a data storage section for storing PIO data from a controller and additional information such as data obtention time, a time obtention section for adding a time to the data when the data is stored in the data storage section, a data distribution section for distributing the PIO data and other supervisory information, a supervisory control section for carrying out supervisory control using the PIO data from the controller, a network interface for communicating with other distributed control devices and the supervisory device, and a communication section for connecting this distributed control device to the other distributed control devices and the supervisory device.