| 摘要 |
PURPOSE:To eliminate inconvenience in using and to make petroleum supply smooth by providing a redisual oil quantity detecting device at a consuming desitination, providing a consumer-classified residual oil quantity display device at an oil selling source, and linking them with a telephone line. CONSTITUTION:A consuming desitination information device 10 consists of a petroleum tank 11, a residual oil detector 12, a level display meter 13, a signal output level device 14, an exchange device 15, etc., while, a selling source destination information device 20 consists of an exchange device 21, an information processor 22, a display device 23, a printer, 24, etc., and the device 10 and 20 are connected by a general subscriber telephone line 30. Here, the detector 12 is provided to the tank 11, and the device 14 displays the residual oil quantity, supplied oil quantity, integrated using quantity, etc. In such system constitution, the petroleum selling source can grasp the intra-tank residual oil quantity of the respective consumers on a real time basis, when the residual oil quantity goes to smaller than the prescribed quantity, since the delivery source is instructed, and the petroleum is supplied to the consumer, the inconvenience of the consumer can be eliminated, and the smooth petroleum supply is attained. |
