JP3386519B2 - Gas shut-off device with re-registration function when mistaken shut-off - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas shut-off device for ensuring safety when using gas after a gas meter. 2. Description of the Related Art Conventionally, as shown in FIG. 3, this type of gas shut-off device has a flow rate measuring means 21 for outputting a flow rate signal g in accordance with a passing gas amount, and a flow rate sent from the flow rate measuring means 21. A flow rate calculating unit 22 that receives the signal g and calculates the actual flow rate p1,
During a predetermined learning period (30 days), the learning processing unit 23 calculates and holds the flow rate pattern q from the actual flow rate p1 as the learning result, the flow rate pattern q of the learning result sent from the learning processing unit 23 and the flow rate calculation unit 22 Receives and compares the flow pattern p2 sent from the learning processing unit 23, and detects an abnormal flow pattern p2 that is not included in the flow pattern q of the learning result sent from the learning processing unit 23. A flow rate determining unit 24 that outputs a signal r, a shutoff / alarm unit 2 that receives a shutoff / alarm signal r sent from the flow rate determination unit 24, and issues a warning or shuts off a gas passage based on the shutoff / alarm signal r.
It consists of five. However, since such a gas shut-off device uses only a specific period as a learning period, a flow rate pattern in a specific period is held as a learning result, and the Changes in gas consumption due to changes in gas consumption, changes in gas consumption due to combinations due to simultaneous use of multiple appliances, and changes in gas consumption due to the use of newly added gas appliances. The pattern p2 was different from the flow pattern q of the learning result, and a false alarm and a false cutoff were made. That is, the conventional gas shut-off device has a problem that a false alarm and a false shut-off that do not conform to the actual usage of gas are performed. Accordingly, it is an object of the gas shut-off device of the present invention to improve the reliability of the gas shut-off device by eliminating the erroneous shut-off again due to the flow pattern causing the erroneous shut-off. Means for Solving the Problems To achieve the above object, a means of the present invention comprises a flow rate measuring means for outputting a flow rate signal corresponding to the amount of passing gas, and a flow rate signal converted to an actual flow rate. And a learning processing unit that calculates and holds a flow pattern from the actual flow rate as a learning result during a predetermined learning period, and compares the flow pattern of the learning result with the flow pattern of the actual flow rate. A flow rate determination unit that detects a flow pattern of an abnormal actual flow rate that is not included in the flow rate pattern of the learning result and outputs a shutoff / warning signal when determining an abnormality, and issues a warning or gas based on the shutoff / warning signal of the flow rate determination unit. A blocking alarm unit for blocking the passage, a blocking flow rate storage unit for storing an abnormal flow rate pattern detected by the flow rate determining unit, and transmitting a re-registration signal by receiving a re-registration start signal from outside Re-registration processing at the time of erroneous shut-off which receives the re-registration signal from the re-registration signal input means at the time of the erroneous cut-off and the re-registration signal input means at the time of the erroneous cut-off, and instructs the learning processing unit to hold an abnormal flow pattern in the cut-off flow storage unit And a part. According to the above-mentioned means, the present invention uses a gas appliance which is changed due to a change in gas consumption due to a change of seasons, a change in gas consumption due to combination due to simultaneous use of a plurality of appliances, or a newly added gas appliance. In the event of an erroneous shutoff, the re-learning start signal is input to the erroneous shutoff re-registration signal input means, thereby updating the learning result of the learning processing unit based on the used flow rate pattern that caused the erroneous shutoff. In this way, the erroneous alarm and the erroneous shutoff due to the used flow rate pattern of the gas which caused the erroneous shutoff are eliminated, and the reliability is improved. An embodiment of the gas shut-off device of the present invention will be described below with reference to the drawings. In FIG. 1, a flow rate measuring means 1 which outputs a flow rate signal G in accordance with a passing gas amount, receives a flow rate signal G sent from the flow rate measuring means 1 and converts it into an actual flow rate P1
The flow calculation unit 2 calculates a flow pattern Q from the actual flow rate P1 as a learning result during a predetermined learning period, and holds the learning result.
It is assumed that a flow rate of 6, 8 m ³ / h is registered), a flow rate pattern Q of a learning result sent from the learning processing unit 3 and a flow rate pattern P2 sent from the flow rate calculation unit 2.
The flow determination unit 4 and the flow determination unit 4 that output a shut-off / warning signal R in the case of an abnormal flow pattern P2 that is not included in the flow pattern Q of the learning result sent from the learning processing unit 3 after being compared and determined. Shut-off alarm means 5 which receives a shut-off / alarm signal R sent from the vehicle and issues a warning or a gas passage.
It has. Further, the flow rate determination unit 4 (now, 5
m ³ / h and 6 m ³ / 11m combination flow generated by the h ³ / h is to have been detected) interrupting the flow storage unit 6 for holding an abnormal flow pattern F was detected (11m ³
/ H is held), an NCU communication line for performing communication between a communication line extending from the gas shutoff device and a gas supply center or a gas shutoff by receiving a reregistration start signal from outside. Utilize the reed switch and LED parts that make up the device, and input using an LED setting device that communicates using a phototransistor and electromagnet.)
Re-registration signal input means 7 for transmitting a re-registration signal T at the time of erroneous interruption
Receiving the re-registration signal T from the re-registration signal input means 7 at the time of erroneous shutdown, and instructing the learning processing unit 3 to hold the abnormal flow pattern F (11 m ³ / h) in the interruption flow rate storage unit 6 Re-registration processing unit 8 (As a result, learning results are 5, 6,
8, 11 m ³ / h). FIG. 2 shows a program flow of the above means over steps 11 to 17. Now, it is assumed that the flow from the processing start to the processing end is periodically processed by an interval calendar or the like. The flow rate determination unit 4 determines whether or not the flow rate is abnormal in process 11 (the number at the upper left of each block).
If the flow rate is abnormal, the shutdown alarm means 5 performs processing 12
Then, an alarm or cutoff is performed, and the process proceeds to step S13. Processing 13
The processing 14 stores the cutoff flow rate in the cutoff flow storage unit 6 and
Move to In step 14, re-registration signal input means 7 upon erroneous cutoff
It is determined whether there is a signal for starting re-registration at the time of erroneous shutdown. If no signal is received, the process is terminated. If a signal is received, a re-registration signal is transmitted in process 15 and process 16 is performed.
Move to In the process 16, the erroneous shut-off re-registration processing unit 8 processes the erroneous shut-off flow rate using the re-registration start signal as a starting point of the process (processing may or may not multiply the cut-off flow rate by a safety coefficient). Then, the erroneous cutoff flow rate processed in the learning processing unit 3 in processing 17 is registered in the learning result, and the processing is terminated. As is apparent from the above description, the gas shut-off device with the re-registration function at the time of erroneous shut-off of the present invention updates the erroneous shut-off flow rate as a new learning result by the erroneous shut-off re-registration means. By holding the information, it is possible to adapt to the flow rate pattern of the learning result similar to the actual flow rate, to eliminate the repetition of false alarms and false cutoffs that hinder gas use, and to improve the reliability of the apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a functional block diagram of a gas shut-off device having a re-registration function at the time of an erroneous shut-off according to one embodiment of the present invention. FIG. 2 is a program flowchart in the device. [Description of reference numerals] 1 Flow rate measuring means 2 Flow rate calculating unit 3 Learning processing unit 4 Flow rate determining unit 5 Shutdown alarm means 6 Shutdown flow rate storage unit 7 Re-registration signal input unit at the time of erroneous shut-off Department

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takuhisa Otani 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Teruhisa Kojima 1-7-16 Weir, Tama-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Taneaki Katsuno 3-1-20, Akihara, Kashiwa City, Chiba Prefecture (72) Inventor Hideji Fujino Central Osaka, Osaka 4-1-2, Hirano-cho, Ward, Osaka Gas Co., Ltd. (72) Inventor Toshiaki Hojo 507-2 Shinhocho, Tokai-shi, Aichi Toho Gas Co., Ltd. (56) References JP-A-3-191206 (JP, A JP-A-3-237986 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G05D 7/06 G01F 3/00-9/02

Claims (1)

(57) [Claims 1] A flow rate measuring means for outputting a flow rate signal corresponding to a passing gas amount, a flow rate calculating section for calculating the actual flow rate by converting the flow rate signal, and a predetermined learning. During the period, a learning processing unit that calculates and holds a flow rate pattern from the actual flow rate as a learning result, compares the flow rate pattern of the learning result with the flow rate pattern of the actual flow rate, and includes the flow rate pattern of the learning result. A flow determining unit that outputs a shut-off / warning signal when an abnormal flow rate is detected by detecting a flow pattern of an abnormal actual flow rate, and a warning notification or a gas passage is shut off based on the shut-off / warning signal of the flow determining unit. A cutoff alarm unit, a cutoff flow storage unit for storing an abnormal flow pattern detected by the flow judgment unit, and a re-registration signal upon erroneous cut-off for transmitting a re-registration signal by receiving a re-registration start signal from outside. Means for receiving the re-registration signal from the erroneous cut-off re-registration signal input means and instructing the learning processing unit to hold an abnormal flow pattern in the cut-off flow storage unit, Gas shut-off device with re-registration function at the time of erroneous shut-off provided.