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1. 发明专利

JPH0314336A SIGNAL SENDING CIRCUIT 失效
公开(公告)号：JPH0314336A
公开(公告)日：1991-01-23
申请号：JP15099789
申请日：1989-06-13
申请人： TOYONAKA KEISO KK
发明人： KOTANI KATSUYA
IPC分类号： H04J3/06 , H04L7/06
摘要： PURPOSE:To easily distinguish a synchronous signal from a data signal and to surely process the data signal by changing the polarity of voltage applied to both ends of a capacitor circuit with the change in the output of a synchronous circuit and sending the data signal having polarity reversed from the synchronous signal to a transmission line when a switching circuit is closed. CONSTITUTION:When the output of the synchronous circuit 13 is in an H level, one end side of the capacitor circuit 19 is turned to positive, the other end side is turned to negative by charging the capacitor. When the output of the circuit 13 is turned to an L level under the condition, the switching circuit 26 is closed and the circuit 19 is electrically connected to the transmission line 12. At this time, the one end side of the circuit 19 is turned to negative and the other end side is turned to positive. Thereby, the polarity of the capacitor is also inverted and the charged electricity is discharged. Since the negative data signal is sent while holding the synchronous signal at positive, the data signal can be easily distinguished from the synchronous signal and the data signal can surely be processed.

2. 发明专利

JPH10227682A WEIGHT SENSOR 失效
公开(公告)号：JPH10227682A
公开(公告)日：1998-08-25
申请号：JP4729997
申请日：1997-02-14
申请人： TOYONAKA KEISO KK
发明人： KOTANI KATSUYA
IPC分类号： G01G5/04 , G01L1/02
摘要： PROBLEM TO BE SOLVED: To obtain a weight sensor manufactured by a low cost by simply altering a weight range to be measured. SOLUTION: A weight sensor 10 comprises a container 12 having flexibility. Fluid 14 such as the air, water or oil is sealed in the container 12. A pressure sensor 16 is mounted in an opening of the container 12. A pressure receiving plate 18 is placed on the container 12, and material 20 to be measured is placed on the plate 18. A weight of the material 20 is transmitted to fluid 14 via the plate 18, and pressure change of the fluid 14 is detected by the sensor 16. A weight of the material 20 is detected from an output signal of the sensor 16 and an area of the plate 18.

3. 发明专利

JPH10201719A CARE SYSTEM 失效
公开(公告)号：JPH10201719A
公开(公告)日：1998-08-04
申请号：JP2424297
申请日：1997-01-22
申请人： TOYONAKA KEISO KK
发明人： KOTANI KATSUYA
IPC分类号： G01G19/52 , A61B5/00 , A61G12/00 , G01V9/00
摘要： PROBLEM TO BE SOLVED: To provide a care system securely detecting whether a person is or not in the bed and giving an alarm if the person is not in the bed. SOLUTION: A care system 10 comprises plural beds 12 and a weight sensor 14 arranged under the leg of each of beds. An output signal from each of the weight sensors 14 is transmitted in sequence to a central controlling unit 18 through multiplex transmission of a transmission apparatus 16. CPU 20 processes the signals and detects whether or not the person is in the bed and shows the existence of a person on a display 24 by a signal from an informing unit 22. After a given lapse of time set by a setting unit 26 if the person is not on the bed 12, an alarm is indicated on the display 24.

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