JPS6293701A - Set opening controller - Google Patents

Abstract

PURPOSE:To control an opening of an actual gate device (or a valve device) so as to become '0'% or 100% substantially in accordance with setting of the opening of '0'% or 100% by an opening setting signal, by inputting an SV signal from the gate device (or the valve device) to a set opening deciding circuit and a setting comparing circuit. CONSTITUTION:The titled device is provided with a set opening deciding circuit 2 for outputting a control signal 8 by deciding a set opening of '0'% or 100% from an opening setting signal 5 from a remote controller, a setting comparing circuit 3 for inputting the opening setting signal 5, the control signal 8 and an actual opening signal 6 from a gate device (or a valve device), and an SV signal, and outputting a relay control input signal 9 by an AND condition of the actual opening signal 6 and the SV signal 7, and an outputting circuit 4 which is controlled by the relay control input signal 9 and outputs a relay control output signal 10 so that an opening of the gate device (or the valve device) becomes '0'% of 100% substantially. In this way, a set opening controller for controlling the opening of the actual gate device (or the valve device) to '0'% and 100% is obtained, without being influenced by a dead zone of a set opening controller, when the set opening from a distance has been set to '0'% and 100%.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a water management system remote monitoring i! In the i11618 system, an opening setting signal for setting the opening degree of the gate device (or valve device) is input from a distance,
The present invention relates to a set opening degree control device that fully controls the opening degree of a gate device.

[Conventional technology]

In a water management system, a gate device (or valve device) has the role of controlling the flow of water, and its opening degree is 0% during irrigation periods, non-irrigation periods, and in emergencies.
Or it needs to be 100%.

In order to prevent hunting of the gate device (or valve device), the conventional set opening control device always provides a dead zone of about 2 to 3% with respect to the set value from a distance.

[Problem that the invention seeks to solve]

However, the conventional setting opening degree 'MIJ H'A' mentioned above
Since M has a dead zone, the set opening is set to 0% and 10%.
Even if it is 0%, the actual gate device (or valve device)
The opening degree is not 0% or ioo%, and there is a drawback that the gate device (or valve device) must be operated on site to achieve that opening degree.

The purpose of the present invention is to set the opening degree to 0% from a distance.

The purpose of the present invention is to provide a set opening control device that controls the actual opening of a gate device (or valve device) to 0% and 100% without being affected by the dead zone of the set opening control device when it is set to 100%. .

[Means for solving problems]

In the set opening control device of the present invention, the remote device includes a set opening determination circuit that determines a set opening of 0% or 100% from an opening setting signal from the remote control device and outputs a control signal;
Setting to input the opening setting signal, control signal, actual opening signal from the gate device t or valve device, and Sv scratch signal, and output a relay control input signal based on the AND condition of the actual opening signal and the Sv scratch signal. a comparison circuit; and an output circuit that is controlled by the relay control signal and outputs a first control output signal to make the opening degree of the gate device or valve device substantially 0% or 100%. It is 'tri' to have.

[Practical]

FIG. 1 shows an embodiment of the present invention, in which the set opening control device ii determines the set opening of 0% or 100% from the opening setting signal 5 from the remote control device and outputs the control 1 signal 8. A set opening determination circuit 2 to output, and an opening setting signal 5. Control signal 8. ji- and actual opening signal from the gate device (or valve device)6. Input the sv signal 7, and input the actual opening signal 6 and S
A setting comparison circuit 3 outputs a relay control input signal 9 according to an AND condition with the v signal 7, and is controlled by the relay control input signal 9 to substantially set the opening degree of the gate device (or valve device) to 0% or 100%. It has an output circuit 4 that outputs a relay control output signal 10 so that the relay control output signal 10 becomes as follows.

〔Effect of the invention〕

As explained above, the present invention provides an S
By inputting the v scratch signal, the opening setting signal can be set to 0%.
Or, depending on the opening degree setting of 100%, the actual gate equipment f (
or valve device) to substantially 0% or 100%
There is an effect that can be controlled to be %.

[Brief explanation of drawings]

FIG. WE1 is a block diagram of an embodiment of the present invention.

Claims (1)

[Claims] 0% or 100 from the opening setting signal from the remote control device
A set opening determination circuit that judges the set opening of % and outputs a control signal, and inputs the opening setting signal, the control signal, and the actual opening signal and SV signal from the gate device or pulp device. a setting comparison circuit that outputs a relay control input signal based on an AND condition of the opening degree signal and the SV signal; and a setting comparison circuit that outputs a relay control input signal based on an AND condition of the opening degree signal and the SV signal, and controlling the opening degree of the gate device or valve device to substantially 0% or 100% under the control of the relay control signal. and an output circuit that outputs a relay control output signal to make the opening degree control device.