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11. 发明专利

JP2001194330A GAS ALARM UNIT AND GAS ALARMING METHOD 失效
公开(公告)号：JP2001194330A
公开(公告)日：2001-07-19
申请号：JP2000004894
申请日：2000-01-13
申请人： YAZAKI CORP , TOKYO GAS CO LTD , FIS KK
发明人： TAKASHIMA HIROMASA , OMURA AKIRA , NAGATA SATOSHI , NAKAE HIROSHI , HONJO TAEKO , MATSUMOTO SHINICHI , OKINAGA KAZUO
IPC分类号： G08B21/14 , G01N27/00 , G01N27/12 , G08B23/00
摘要： PROBLEM TO BE SOLVED: To provide a gas alarm unit and a gas alarming method capable of beforehand detecting/reporting deterioration of a gas sensor in sensitivity in the event that the gas sensor is driven by a battery with limited capacity. SOLUTION: In this gas alarm unit, the gas sensor 1 is on-off driven with a specified period by a pulse drive signal generated by a sensor drive circuit 13 receiving a power supply voltage of the battery 5, the concentration of carbon monoxide is detected during off-drive periods of the sensor 1, and an alarm is given to indicate an abnormal concentration of carbon monoxide when a detected concentration of carbon monoxide exceeds an alarm point. A sensor detection circuit 9 detects the value of sensor resistance of a sensor element 3 during an on-drive period in each of the periods. A sensor abnormality judging circuit 16 judges whether the sensor 1 is abnormal based on variations in a plurality of detected values of sensor resistance. An LED 21 gives an alarm indicating the abnormality of the sensor 1 when the sensor 1 is judged to be abnormal.

12. 发明专利

JP2001357467A GAS ALARM FOR BATHROOM 失效
公开(公告)号：JP2001357467A
公开(公告)日：2001-12-26
申请号：JP2000177206
申请日：2000-06-13
申请人： FIGARO ENG , YAZAKI CORP , TOKYO GAS CO LTD
发明人： FUJIMORI YUKI , OTSUKA KAZUYUKI , TAKASHIMA HIROMASA , OMURA AKIRA , HONJO TAEKO
IPC分类号： F24H1/00 , G08B21/00 , G08B21/14
摘要： PROBLEM TO BE SOLVED: To reduce the initial malfunction time of a gas alarm for a bathroom. SOLUTION: A waterproof film is provided at the gas introduction hole of the gas alarm for a bathroom, the printed board of the alarm is coated with waterproof resin, and a gas sensor which heats a gas sensing body provided on an insulated board for 14 ms once every minute is used. During one minute after turning on a battery power source, a heating condition is changed to heating for 60 sec by 14 ms each once a second. After then, it is changed to heating for 14 ms once a minute, the alarm waits for one minute without detecting gas and the alarm is shifted to normal monitoring operation.

13. 发明专利

JP2001266262A ALARM, SIGNAL CONVERTER PROVIDED BETWEEN ALARM AND EXERNAL EQUIPMENT, AND ALARMING DEVICE 失效
公开(公告)号：JP2001266262A
公开(公告)日：2001-09-28
申请号：JP2000076738
申请日：2000-03-17
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： TOYODA KAZUO , NAGATA SATOSHI , NAKAE HIROSHI , HONJO TAEKO
IPC分类号： G01N27/00 , G08B17/00 , G08B21/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To provide an alarm, a signal converter and an alarming device capable of performing a gas alarm operation and a fire alarm operation. SOLUTION: This signal converter 40 is installed between the alarm 1 for outputting a voltage signal showing a gas alarm and a no voltage signal showing a fire alarm on the basis of a detection signal detected by a sensor and an interlocking device 30a for generating an alarm on the basis of the voltage signal from the alarm 1. The signal converter 40 is provided with a voltage decision circuit 31 for deciding whether a reception signal received from the alarm 1 is a voltage signal, a no voltage receiving circuit 33 receiving the no voltage signal from the alarm 1, and a voltage generation circuit 37 which outputs a voltage signal to the device 30a when the reception signal is decided to be a voltage signal, generates a voltage signal on the basis of the no voltage signal and outputs the voltage signal to the device 30a when the no voltage signal is received.

14. 发明专利

JP2001194331A GAS ALARM UNIT AND GAS ALARMING METHOD 失效
公开(公告)号：JP2001194331A
公开(公告)日：2001-07-19
申请号：JP2000004899
申请日：2000-01-13
申请人： YAZAKI CORP , TOKYO GAS CO LTD , FIS KK
发明人： TAKASHIMA HIROMASA , OMURA AKIRA , NAGATA SATOSHI , NAKAE HIROSHI , HONJO TAEKO , MATSUMOTO SHINICHI , OKINAGA KAZUO
IPC分类号： G08B21/14 , G01N27/00 , G01N27/12 , G08B23/00
摘要： PROBLEM TO BE SOLVED: To provide a gas alarm unit and a gas alarming method capable of securing stable sensor sensitivity for a long time even when a gas sensor is driven by a battery with limited capacity and even in a severe environment such as high humidity. SOLUTION: A sensor drive circuit 13 generates pulse drive signals. The drive signals have first pulses with first cycles and second pulses with second cycles longer than the first cycles. Each of the first and second pulses has a high-level period during which it holds a high level, a low-level period during which it holds a low level, and a zero-level period during which it holds a zero level smaller than the low level. The second pulses are larger than the first pulses. The gas sensor 1 is driven by the drive signals. A sensor detecting circuit 9 detects the concentration of carbon monoxide based on an output of a sensor element during the low-level period of the drive signals in each of the first cycles. An alarm judging circuit 14 judges whether the detected concentration of carbon monoxide has exceeded an alarm point. An LED 21 gives an alarm indicating the abnormality of the concentration of carbon monoxide when the concentration of carbon monoxide has exceeded the alarm point.

15. 发明专利

JP2000132761A ALARM 失效
公开(公告)号：JP2000132761A
公开(公告)日：2000-05-12
申请号：JP32138498
申请日：1998-10-28
申请人： YAZAKI CORP , HOCHIKI CO
发明人： NISHINO MITSUSHIGE , NAKAE HIROSHI , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G08B17/10 , G01K7/02 , G01N27/00 , G01N27/12 , G08B17/00 , G08B21/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To provide an alarm which does not give so much incorrect information by uniting a gas alarm and a fire alarm and integrating and processing the signals of a gas sensor and a fire sensor. SOLUTION: This alarm contains a thermally sensitive sensor 11, a smoke sensor 13, a CO sensor 15 and a hydrocarbon sensor 17. An initial fire is discriminated when the thermally sensitive sensor detects heat that is equal to or more than threshold or when the smoke sensor detects smoke that is equal to or more than threshold, and an initial alarm is issued. A real fire is further discriminated when the CO sensor exceeds 1st threshold and, and a real alarm is issued. The initial alarm indicating the risk of fire breaking is issued to rouse the confirmation of the actual place involved, and when CO gas concentration further becomes higher than the 1st threshold in addition to this situation, the real alarm is issued, based on reliable information related to the fire occurrence.

16. 发明专利

JPH1130537A TURBINE TYPE FLOWMETER 失效
公开(公告)号：JPH1130537A
公开(公告)日：1999-02-02
申请号：JP12867098
申请日：1998-05-12
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , TASHIRO TAKESHI , SATO SHINICHI , HONJO TAEKO
IPC分类号： G01F1/115 , G01F1/12
摘要： PROBLEM TO BE SOLVED: To provide a turbine type flowmeter that can measure the correct flow rate of a fluid by making the rotational speed of an impeller follow the change of flow velocity even when the flow rate of the fluid such as a gas or the like changes. SOLUTION: A rotational speed control means is constituted of an electromagnetic coil 1ab and a magnetized vane 19a set at an inner wall face of a flowmeter main body 11. A flow velocity sensor 18 as a flow rate change detection means is set at the inner wall face of the main body 11. A flow velocity of a gas 20 at a flow path 17 is measured by the flow velocity sensor 18. When a flow rate is detected to decrease, stop or increase, a current corresponding to a change of the flow velocity is fed to the pair of electromagnetic coils 19b with a predetermined timing. At this time, a brake force or rotation-assisting force is applied to an impeller 14 because of an electromagnetic force generated between the conductive electromagnetic coil 19b and magnetized vane 19a to achieve a rotational speed corresponding to the flow rate.

17. 发明专利

JP2000285335A ALARM 失效
公开(公告)号：JP2000285335A
公开(公告)日：2000-10-13
申请号：JP9086099
申请日：1999-03-31
申请人： TOKYO GAS CO LTD
发明人： NISHINO MITSUSHIGE , NAKAE HIROSHI , HONJO TAEKO , MACHINO AKIRA , KOBAYASHI YASUHIRO , AKIYAMA JUNICHI
IPC分类号： G08B17/117 , G08B17/06
摘要： PROBLEM TO BE SOLVED: To provide a fire alarm which reduces false alarms and operates accurately by detecting generating gas in case a fire actually takes place. SOLUTION: This alarm 1 is provided with an organic compound sensor 2 which detects an organic compound including oxygen in a specific molecular structure existing in air, a deciding part 3 to which a signal from the sensor is inputted to decide a fire and alarming parts 4 and 5 which generate alarms in accordance with the decision. The specific compound is any among methylfuran, glycol aldehyde, hydroxyacetone, formaldehyde, acetaldehyde, formic acid or acetic acid. It is possible to issue an accurate alarm because of detecting main gas generating in case of an actual fire.

18. 发明专利

JP2000311284A SECURITY SYSTEM UTILIZING FIRE ALARM DEVICE AND GAS METER 失效
公开(公告)号：JP2000311284A
公开(公告)日：2000-11-07
申请号：JP2000045525
申请日：2000-02-23
申请人： TOKYO GAS CO LTD
发明人： NAKAE HIROSHI , YOKOYAMA MUTSUTO , KUMANO TOSHINOBU , TOGO SATOSHI , NISHINO MITSUSHIGE , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G08B21/14 , G08B17/00 , G08B21/16 , G08B25/08 , G08B29/02 , H04M11/04
摘要： PROBLEM TO BE SOLVED: To obtain a security system which improves the detection accuracy of fire occurrence and can be connected to a quicker and appropriate security activity in accordance with a security level. SOLUTION: This security system has a gas meter 10 which is installed in a customer house and measures a flow rate, a fire alarm 22 installed in the customer house, a security device 30 which is connected to the gas meter and the fire alarm in a communicable way and installed at the customer house and a gas center 40 which is connected to the security device through a communication line and receives fire information and gas information from the security device. The center 40 receives the fire information and gas information collected by the device 30, and automatically notifies a fire station 42 from those information or performs quick and appropriate correspondence corresponding to a security level such as to call to the customer house to check absence and subsequently to perform automatic notification. Since the gas information and the fire information are collected to the gas center, for instance, the predictive capability of the so-called TEMPURA (deep batter fried food) fire being the highest cause of a fire can be improved and security activity such as more appropriate and quick dispatching of fire-fighting can be connected.

19. 发明专利

JPH11188573A DRILLING CONTROL DEVICE 失效
公开(公告)号：JPH11188573A
公开(公告)日：1999-07-13
申请号：JP36946597
申请日：1997-12-26
申请人： TOKYO GAS CO LTD
发明人： HONJO TAEKO , SUYAMA KENJI , MASUDA TOMONORI
IPC分类号： B23Q15/013 , B23B47/18
摘要： PROBLEM TO BE SOLVED: To stop drilling immediately before rupture when a material extendable against an external force is drilled by a rotating cutting tool. SOLUTION: A rotating blade 3 uses a square-cut end mill in order to make it difficult for an object to be drilled 11 to be projected from a drill hole end. When a material extendable against the external force is cut, a load current of a motor 5 for feeding varies at a gentle inclination. In a control circuit 9, drilling is made while the load current of the motor 5 for feeding is detected. Then, before the rotating blade 3 is projected from the drill hole end of the object to be drilled 11, a stop instruction is given to the motor for feeding 5 when a load current value corresponding to this case is detected so as to automatic perform a drilling stop control. Whether the rotating blade 3 is already projected or not can be judged by a comparison of a load current of the motor for feeding with a predetermined threshold.

20. 发明专利

JPH11188517A PUNCHING CONTROLLER 失效
公开(公告)号：JPH11188517A
公开(公告)日：1999-07-13
申请号：JP36946497
申请日：1997-12-26
申请人： TOKYO GAS CO LTD
发明人： HONJO TAEKO , SUYAMA KENJI
IPC分类号： B23B47/18
摘要： PROBLEM TO BE SOLVED: To automatically control feeding and returning of a rotational cutting part in case where the rotational cutting part is hydraulically or pneumatically driven. SOLUTION: The punching time and the non-punching time can be judged from a load current value of a feeding electric motor 5. A control circuit 9 performs punching while detecting the load current of the feeding electric motor 5, feeds a stop command to the feeding electric motor 5 when the unload current value is detected in a finish of punching, and automatically controls stopping punching. The judgement whether punching is finished or not is performed by comparison to a preset threshold value.

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