JPH0346940U

JPH0346940U -

Info

Publication number: JPH0346940U
Application number: JP10685889U
Authority: JP
Priority date: 1989-09-12
Filing date: 1989-09-12
Publication date: 1991-04-30

Description

[Brief explanation of drawings]

第１図は本考案に係るフロースイツチの構成を
示すブロツク図、第２図は警報信号及び予知信号
の出力処理動作を示すフローチヤート、第３図は
流量に対する予知信号及び警報信号のオンオフ状
態を示す図である。１……フロースイツチ、１１……センサー、１
２……流量検出部（流量検出手段）、１３……基
準流量設定部（基準流量設定手段）、１４……比
率設定部（比率設定手段）、１５……予知流量演
算部（予知流量演算手段）、１６……警報出力部
（警報出力手段）、１７……予知出力部（予知出
力手段）、２２……ロータ、Ｓ１……パルス信号
、Ｓ２……警報信号、Ｓ３……予知信号、Ｆｒ…
…検出流量値、Ｆｋ……基準流量、Ｒｓ……比率
、Ｆｙ……予知流量。 Fig. 1 is a block diagram showing the configuration of the flow switch according to the present invention, Fig. 2 is a flowchart showing the output processing operation of the alarm signal and prediction signal, and Fig. 3 shows the on/off state of the prediction signal and alarm signal with respect to the flow rate. FIG. 1...Flow switch, 11...Sensor, 1
2...Flow rate detection section (flow rate detection means), 13...Reference flow rate setting section (reference flow rate setting means), 14...Ratio setting section (ratio setting means), 15...Predicted flow rate calculation section (predicted flow rate calculation means) ), 16... Alarm output section (alarm output means), 17... Prediction output section (prediction output means), 22... Rotor, S1... Pulse signal, S2... Alarm signal, S3... Prediction signal, Fr …
...Detected flow rate value, Fk...Reference flow rate, Rs...Ratio, Fy...Predicted flow rate.

Claims

[Claims for Utility Model Registration] A flow switch that operates according to the flow rate of a fluid, comprising: a rotor that rotates at a speed approximately proportional to the flow rate of the fluid; and a sensor that outputs a pulse signal in accordance with the rotation of the rotor. , a flow rate detection means for determining a detected flow rate value corresponding to the flow rate from the pulse width or pulse period of the pulse signal output by the sensor; a reference flow rate setting means for setting a reference flow rate; and a reference flow rate setting means for setting a reference flow rate; a ratio setting means for setting a ratio based on the reference flow rate and the ratio; a predicted flow rate calculation means for calculating a predicted flow rate from the reference flow rate and the ratio; and a prediction output means that compares the predicted flow rate and the detected flow rate value and outputs a prediction signal when the detected flow rate value is small. flow switch.