JP3885269B2 - Fluid control valve control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluid shutoff valve control device built in a gas meter that controls opening and closing of a flow of a gas fluid flowing in a flow path.
[0002]
[Prior art]
Conventionally, this type of fluid control valve control device has been disclosed in Japanese Patent Laid-Open No. 5-71656. The configuration will be described below with reference to the drawings. FIG. 16 is a block diagram of a conventional valve control device . Reference numeral 1 is a stepping motor, 2 is a detector such as the number of revolutions, 3 is a comparator, 4 is a microcomputer, 5 is a drive unit, and 6 is a power source. The control method is such that when the valve is opened (or when the valve is closed), the fluid pressure in the reverse direction applied to the valve element (not shown) is large. Therefore, the drive unit 5 is actuated by a signal from the microcomputer 4 to drive the motor thrust of the stepping motor 1. In order to obtain this, deceleration driving (applying a wide pulse width) was performed, and after a certain time, switching to acceleration driving (applying a narrow pulse width) was made. Further, constant speed tribe (applying equal pulse width) was performed when the valve was closed (or opened).
[0003]
[Problems to be solved by the invention]
However, the conventional control device has a problem that the power consumption of the stepping motor is large because of control for changing only the number of pulses.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a valve portion that opens and closes a flow path, a valve body provided inside the valve section , a driving means that drives the valve body , and a fluid to be detected that flows in the flow path. A flow rate measuring means for measuring the flow rate of the gas, an arithmetic processing unit for arithmetically processing a signal from the flow rate measuring means, and a drive for inputting a signal from the arithmetic processing unit and outputting a drive signal as a pulse signal to the driving means a circuit, and a voltage control means for variably controlling the output voltage of the driving circuit, and a power supply unit, the driving signal to the driving means during the opening operation and the closing operation of the valve body, the valve body When the fluid pressure due to the fluid flow acts in the forward direction with respect to the moving direction, the fluid pressure due to the fluid flow acts in the opposite direction with respect to the driving voltage and the pulse output frequency with respect to the moving direction of the valve body. Drive voltage and pulse output frequency Voltage, a fluid control valve control apparatus with a low frequency. In general, in the valve part, when the valve part is opened and closed due to the position and direction of the inlet and outlet of the fluid, the fluid pressure due to the flow of fluid acts in the reverse direction relative to the moving direction of the valve body. May work. Therefore, basically, the force and energy required for the opening operation of the valve body are different from the force and energy required for the closing operation. The present invention controls the opening and closing of the valve section by operating the driving means by changing the driving voltage and the pulse output frequency in accordance with the forces required for the opening operation and the closing operation. In addition, the power consumption of the driving means can be reduced, and the capacity of the battery power source can be reduced.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In order to solve the above-mentioned problem, the invention according to claim 1 of the present invention includes a valve portion that opens and closes a flow path, a valve body provided inside the valve portion , a driving means that drives the valve body , A flow rate measuring means for measuring the flow rate of the fluid to be detected flowing through the flow path, an arithmetic processing unit for arithmetic processing of a signal from the flow rate measuring means, and a signal input from the arithmetic processing unit to drive the driving means and a drive circuit for outputting a pulse signal, the output voltage of the driver circuit and a voltage control means for variably controlling, and a power supply unit, to the drive means in the opening operation and the closing operation of the valve body The drive signal is based on the flow of fluid in the direction of movement of the valve body with respect to the drive voltage and pulse output frequency when the fluid pressure due to the flow of fluid acts in the forward direction with respect to the direction of movement of the valve body. Driving voltage when fluid pressure acts in the opposite direction The pulse output frequency high voltage, a fluid control valve control apparatus with a low frequency. In general, in the valve part, when the valve part is opened and closed due to the position and direction of the inlet and outlet of the fluid, the fluid pressure due to the flow of fluid acts in the reverse direction relative to the moving direction of the valve body. May work. Therefore, basically, the force and energy required for the opening operation of the valve body are different from the force and energy required for the closing operation. The present invention controls the opening and closing of the valve section by operating the driving means by changing the driving voltage and the pulse output frequency in accordance with the forces required for the opening operation and the closing operation. In addition, the power consumption of the driving means can be reduced, and the capacity of the battery power source can be reduced.
[0006]
The invention of claim 2, wherein the present invention, further to the first aspect of the invention, a timer means to count between time, during opening operation of the valve body opposite to the moving direction of the valve body When a fluid pressure is applied to the valve body, after the time sufficient for valve opening has elapsed due to the counting of the timer means, the valve body is driven with a pulse signal having a high frequency and a driving voltage lower than the pulse output frequency at the initial stage of the opening operation. When the fluid pressure is applied in the same direction as the moving direction of the valve body during the closing operation of the valve body, a sufficient time has passed for the valve body to be closed by counting of the timer means The latter is a fluid control valve control device that drives the valve body with a drive signal at the initial stage of the closing operation and a pulse signal that is higher in voltage and lower in frequency than the pulse output frequency, and moves the valve body in opposition to the fluid flow. Configuration of valve section for valve opening operation Oite Since the valve opening formed operation time of initial performing valve opening formed operation from the valve closed state the valve element is subjected to pressure of the fluid flow in a direction opposite to the movement direction, the high voltage and strong low-frequency pulse performs drive by force, is passed predetermined time counting by the timer means, after the pressure had received by the flow of the fluid becomes sufficiently small by valve formed opened by moving the valve body, a low voltage, and high By controlling to switch to driving by frequency pulses, the power consumption of the driving means required for the valve opening operation can be reduced.
[0007]
In the initial stage of the closing operation of the valve body, the driving means is driven with a low voltage and high frequency pulse, and after a predetermined time has elapsed, the driving means is driven with a high voltage and low frequency pulse, thereby allowing fluid flow. in the structure of the valve unit for performing closed valve formed operation by moving the valve body in the direction, strong when performing closed valve formed operation from the valve open state, the valve element is subjected to pressure due to the flow of fluid in a forward direction forces driving is required by, and driven at low voltage and high frequency pulses, the predetermined time counted by the timer means has elapsed, a high voltage, and low in valve closed formation state where the valve body is in contact with the valve seat By controlling to drive with a strong force by the frequency pulse, the urging force of the valve body to the valve seat is increased, and the sealing performance of the valve portion can be improved. Further, it is possible to reduce the power consumption of the drive means required for the closed valve formed operation.
[0008]
Further, the invention according to claim 3 of the present invention, further to the first aspect of the invention, a valve closing detecting means for detecting the opening and closing of the valve body, said valve body during opening operation of the valve body When fluid pressure is applied in the direction opposite to the moving direction, if the valve opening / closing detection means detects that the valve body is open, a pulse with a lower frequency and higher frequency than the drive voltage and pulse output frequency before detection is detected. When the valve body is driven by a signal and the fluid pressure acts in the same direction as the movement direction of the valve body during the closing operation of the valve body, the valve body is closed by the valve opening / closing detection means. Is a fluid control valve control device that drives the valve body with a pulse signal that is higher in voltage and lower in frequency than the drive voltage and pulse output frequency before detection , and is opposed to the flow of fluid. In the configuration of the valve part that moves the valve and opens the valve, When the state performing the valve opening formed operation, the valve body is valve opening formed direction opposite to the high voltage to the valve opening forming the beginning of the operation receiving fluid pressure, and subjected to intense driving by the low frequency pulses, the valve detecting means Detecting the open / closed state of the valve part, so that the valve body is opened slightly, and the urging force of the fluid pressure acting on the valve body in the reverse direction is reduced, so that it is driven with a low voltage and high frequency pulse. power consumption of the drive means necessary for the valve opening formed operation by controlling can be reduced.
[0009]
Also, closing operation time of initial is the driving means low voltage of the valve body, and driven at a high frequency pulse, a high voltage the drive means after the valve portion is closed, and by driving at low frequencies, the fluid of the the valve unit configured to perform closed valve formed operation by moving the valve body in the direction of flow, strong force closed valve formed operation is not required, the low voltage from the closing operation at the initial of the valve portion, and a high frequency performs driving by the pulse, a high voltage after the valve closing detecting means detects the closed state of the valve body, and subjected to intense driving by a low frequency, to increase the urging force of the valve seat of the valve body when the valve closing adult . Therefore, by this drive control, the power consumption of the drive means can be reduced and the sealing performance of the valve portion can be improved.
[0010]
Embodiments of the present invention will be described below with reference to the drawings. In addition, in Example 1-3 , the same code | symbol is attached | subjected about the equivalent component and description is abbreviate | omitted partially.
[0011]
Example 1
FIG. 1 is a configuration diagram of a gas meter according to Embodiment 1 of the present invention. FIG. 2 is a block diagram of the gas meter. 3 and 4 are sectional views when the gas meter valve portion is opened, and FIG. 5 is a sectional view when the gas meter valve portion is closed. FIG. 6 is a flowchart of the operation during the valve closing operation of the valve portion of the gas meter, and FIG. 7 is an operation flowchart during the valve opening operation of the valve portion of the gas meter.
[0012]
1 and 2, 7 is the housing of the gas meter, in the interior of the housing 7, the passage 10 for communicating the inlet 8 and outlet 9 is formed. The flow path 10 includes a valve unit 11 that opens and closes the flow path 10, a stepping motor 12 that is a driving unit that drives the valve unit 11, and a flow rate measurement unit that measures a flow rate of a gas that is a detected fluid that flows through the flow path 10. 13, an arithmetic processing unit 14 that performs arithmetic processing on the signal from the flow rate measuring unit 13, a driving circuit 15 that inputs a signal from the arithmetic processing unit and outputs a driving signal to the stepping motor 12 of the driving unit, and a driving circuit The voltage control means 16 which changes the output voltage from the pulse from 15 (it abbreviate | omits pulse hereafter) and the battery power supply part 17 are comprised. Reference numeral 18 denotes display means for displaying the flow rate. 3 to 5, the valve portion 11 having the inlet joint 19 and the outlet joint 20 is connected to the linear motion conversion portion 21 that converts the rotation of the stepping motor 12 into the direct motion, and the linear motion conversion portion 21. There is provided a valve body 23 that moves up and down and comes into contact with the valve seat 22 to be closed. 6 and 7, step 1 is a flow rate measuring operation, step 2 is a flow rate integrating operation, step 3 is an operation for comparing the set value of the integrated flow rate stored in the arithmetic processing unit 14 with the value integrated with the flow rate, step 4 is a valve closing signal output operation for instructing valve closing, step 5 is an operation for driving a stepping motor 12 as a driving means at a certain voltage A and a pulse output frequency A, and step 6 is a closing state of the valve unit 11. Indicates. Step 7 is a valve opening signal output operation for commanding valve opening, Step 8 is an operation for driving a stepping motor 12 as a driving means at a certain voltage B and pulse output frequency B, and Step 9 is an opening state of the valve portion 11. .
[0013]
Next, the operation and action of the above configuration will be described with reference to FIGS. First, the valve closing operation of the valve unit 11 shown in FIG. 6 will be described. Normally, the valve body 23 of the valve unit 11 built in the gas meter is in an open state, and in step 1, the flow rate is measured. In step 2, the flow rate integration is performed by the arithmetic processing unit 14 based on the measured flow rate value. Step 3 The flow rate integrated value are compared with a set value of the integrated flow rate stored in the arithmetic processing unit 14, the value of the flow rate integration is below the set value of the integrated flow rate Ru Tei stored in the arithmetic processing unit 14 If it is larger, it is judged as abnormal, a valve closing signal is outputted from the arithmetic processing unit 14 in step 4, voltage A and pulse output frequency A are applied from the drive circuit 15 to the stepping motor 12 in step 5, and the stepping motor 12 is turned on. To drive. The rotation of the stepping motor 12 is converted into a linear motion by the linear motion conversion unit 21, the valve body 23 moves and comes into contact with the valve seat 22, and the valve is closed in Step 6. At this time, since the flow path 10 is closed by the valve portion 11 of the gas meter, the gas does not flow to the instrument side (not shown). Next, the valve opening operation of the valve body shown in FIG. 7 will be described. When it is determined that there is no abnormality on the instrument side, a valve opening signal instructing opening of the valve is output from the arithmetic processing unit 14 in step 7, 8, the voltage B and the pulse output frequency B are applied from the drive circuit 15 to the stepping motor 12, and the stepping motor is driven. The rotation of the stepping motor 12 is converted into a linear motion by the linear motion changing unit 21, the valve body 23 moves, and is disengaged from the valve seat 22, and the valve is opened in Step 9. That is, in the valve portion 11 as in the present embodiment shown in FIGS. 3 to 5, the gas flowing direction and the moving direction of the valve body 23 are reversed during the opening operation, and the gas pressure opposite to the valve opening direction is set to the valve body 23. However, when the valve is closed, the valve body 23 moves in the same direction as the flow of gas flowing from the inlet joint 19 toward the outlet joint 20. When the valve body 23 receives the pressure due to the flow in the valve closing direction, a directional force for closing the valve body 23 acts, and the force necessary for closing the valve body 23 is reduced, and the voltage is lower than that during the opening operation. And can be driven at a high pulse frequency. This low voltage indicates a voltage lower than the maximum output voltage (for example, 3 V) of the battery power supply unit 17. In general, the design value of the operating voltage of the valve is 2 V or less when the maximum output voltage of the battery power supply unit 17 is 3 V, for example, considering the output voltage drop characteristics, temperature characteristics, gas pressure, etc. of the battery power supply unit 17 over time. Designed so that the valve can be opened. Further, the operation voltage at the time of closing is operated below the voltage at the time of opening. Further, the high pulse frequency means a high frequency at which a force necessary for closing the valve body 23 can be obtained below the step-out torque of the stepping motor. The operation pulse frequency at the closing time is operated at a frequency higher than the opening frequency. As described above, since the force and energy required for the valve opening operation and the valve closing operation are different, in this embodiment, the drive voltage and the pulse frequency are changed according to the force and energy required for each operation. The power consumption required for the valve opening operation and the valve closing operation can be reduced by the control, and the capacity of the battery power supply unit 17 can be reduced.
[0014]
(Example 2)
FIG. 8 is a gas meter structure diagram of Embodiment 2 of the present invention. FIG. 9 is a block diagram of the gas meter. FIG. 10 is an operation flowchart at the time of valve opening operation of the valve portion of the gas meter, FIG. 11 is an operation flowchart at the time of valve closing operation of the valve portion of the gas meter, and the point different from the first embodiment is that the time is shown in FIGS. Provided is a timer means 24 for counting, an operation for driving the stepping motor 12 as a driving means with a high voltage, low frequency pulse, step 10, an operation step 11 for counting the timer means 24 and a predetermined time, a low voltage, a high voltage Each operation program of the operation step 12 for driving the stepping motor 12 which is a driving means by the frequency pulse is provided.
[0015]
Next, the operation and action of the above configuration will be described. The opening operation of the valve unit 11 shown in FIG. 10 will be described. In step 7, a valve opening signal instructing opening of the valve is output from the arithmetic processing unit 14, and in step 10, a driving signal by a high voltage, low frequency pulse is processed. The driving circuit 15 output from the unit 14 is driven by applying high voltage and low frequency pulses to the stepping motor 12, and at the same time, the timer means 24 is operated in step 11, and the timer means 24 is activated for a predetermined time (sufficient to open the valve). When the time is counted, a drive signal based on the low voltage and high frequency pulse is output from the arithmetic processing unit 14 in step 12, and the low voltage and high frequency pulse is applied from the drive circuit 15 to the stepping motor 12 for driving. Then, the valve element 23 is moved by the linear motion conversion unit 21 and is separated from the valve seat 22 to reach the valve open state in Step 9. In this operation, when the valve portion 11 is opened, the gas pressure due to the gas flow acts in the direction opposite to the moving direction of the valve body. Therefore, the valve 11 is initially opened with a strong driving force by a high voltage, low frequency pulse to open the valve. When the valve body 23 moves after a sufficient time has passed and the urging force of the pressure affected by the gas flow becomes sufficiently small, control is performed so as to switch to driving with a low voltage, high frequency pulse, thereby opening the valve. It is possible to reduce the power consumption of the driving means required for this.
[0016]
Next, the closing operation and action of the valve unit 11 shown in FIG. 11 will be described. In the comparison operation with the set value in Step 3, the value of the flow rate integration performed in the arithmetic processing unit 14 in Step 2 is stored in the arithmetic processing unit 14. If it is larger than the set value of the integrated flow rate, a valve closing signal is output from the arithmetic processing unit 14 in step 4, and a drive signal based on a low voltage and high frequency pulse is output from the arithmetic processing unit in step 12. The circuit 15 is driven by applying a low voltage, high frequency pulse to the stepping motor 12. At the same time, when a predetermined time (a time sufficient for the valve to close) is counted by the timer means 24 in step 11, a drive signal with a high voltage and low frequency pulse is output from the arithmetic processing unit 14 in step 10 and driven. A high voltage, low frequency pulse is applied from the circuit 15 to the stepping motor 12 to drive with a strong force, and the valve element 23 comes into contact with the valve seat 22 with a strong force by the linear motion conversion unit 21 to close the valve in step 9. To the state. In the closing operation of the valve, the moving direction of the valve body 23 and the direction in which the gas pressure acts are the same. Most of the closing operation of the valve is driven by a low voltage, high frequency pulse, and only in the last stage. By performing strong driving with high voltage and low frequency pulses, power consumption can be reduced and the valve body 23 can be closed against the valve seat 22 with a strong force, and the sealing performance of the valve can be improved. .
[0017]
(Example 3)
FIG. 12 is a configuration diagram of the gas meter according to the third embodiment of the present invention. FIG. 13 is a block diagram of the gas meter. FIG. 14 is an operation flowchart when the valve portion of the gas meter is opened, and FIG. 15 is an operation flowchart when the valve portion of the gas meter is opened.
[0018]
The difference from the first and second embodiments is that the valve opening / closing detection means 25 for detecting the opening / closing of the valve unit 1 is provided in FIGS. 12 to 15, the operation step 14 for detecting the open state of the valve unit 11, and the valve unit 11 has an operation step 15 for detecting the closed state. The valve opening / closing detection means 25 detects the opening / closing state of the valve section 11 by processing the signal of the flow rate measurement means 13 by the arithmetic processing section 14 and determining whether or not there is a flow.
[0019]
Next, the operation and action of the above configuration will be described. The opening operation of the valve unit 11 shown in FIG. 14 will be described. In step 7, a valve opening signal instructing opening of the valve is output from the arithmetic processing unit 14, and in step 10, a driving signal based on high voltage and low frequency pulses is processed. The high pressure and low frequency pulses are applied to the stepping motor 12 from the driving circuit 15 and driven, and the valve element 23 is moved by the linear motion conversion unit 21. Next, in step 14, a valve opening operation for detecting the opening state of the valve portion 11 is performed, and when it is detected that the valve body 23 is opened, a drive signal based on a low voltage, high frequency pulse is calculated in step 12. A low voltage, high frequency pulse is applied from the drive circuit 15 to the stepping motor 12 from the processing unit 14, and driving by the low voltage is continued. In this operation, when the valve portion 11 is opened, the valve body 23 initially moves in opposition to the gas pressure, so that a strong drive with a high voltage and low frequency pulse is required, but when the valve body 23 is slightly opened, The effect of the gas pressure due to the gas flow received by the body 23 is reduced. Accordingly, the valve opening / closing detection means 25 detects that the valve body 23 has been slightly opened, and the power consumption of the drive means required for opening the valve can be reduced by immediately switching to drive with a low voltage, high frequency pulse. it can.
[0020]
Next, the closing operation and action of the valve unit 11 shown in FIG. 15 will be described. In the comparison operation with the set value in Step 3, the value of the flow rate integration performed in the arithmetic processing unit 14 in Step 2 is stored in the arithmetic processing unit 14. When the integrated flow rate is larger than the set value, a valve closing signal is output from the arithmetic processing unit 14 in step 4, and a drive signal based on a low voltage and high frequency pulse is output from the arithmetic processing unit 14 in step 12. Low voltage and high frequency pulses are applied from the drive circuit 15 to the stepping motor 12 to drive the stepping motor 12, and the valve element 23 moves toward the valve seat 22 by the linear motion converter 21. Next, in step 15, when the valve opening / closing detection means 25 detects the closed state of the valve portion 11 and detects that the valve body 23 is closed, a drive signal by a high voltage, low frequency pulse is detected. Is output from the arithmetic processing unit 14, and high voltage and low frequency pulses are applied from the driving circuit 15 to the stepping motor 12. The stepping motor 12 is driven with a strong force and is already in contact with the valve seat 22 by the linear motion conversion unit 21. In a state where the valve body 23 is further urged strongly against the valve seat 22, the valve closing of Step 9 is reached. This action can improve the sealing characteristics of the valve portion 11. Moreover, the power consumption of the drive means required for the valve closing operation can be reduced.
[0021]
【The invention's effect】
As is apparent from the above effects, according to the first aspect of the present invention, the driving power of the driving means during the opening operation and the closing operation of the valve portion is controlled to have different voltages and different pulse output frequencies. by, since it is possible to drive at a voltage corresponding to the respective force required valve opening formed and closed valve formed, it is possible to reduce the power consumption required for driving means. As a result, the capacity of the power supply unit can be reduced.
[0022]
According to the second aspect of the present invention, the driving means is driven with a high voltage and low frequency pulse in the initial stage of the opening operation of the valve body , and after a predetermined time has elapsed, the timer means is driven with the low voltage and high frequency pulse. By controlling to switch to driving, the power consumption of the driving means required for the valve opening operation can be reduced. As a result, the capacity of the power supply unit can be reduced.
[0023]
In the initial stage of the closing operation of the valve body, the driving means is driven with a low voltage and high frequency pulse, and the timer means is controlled to drive the driving means with a high voltage and low frequency pulse after a predetermined time has elapsed. As a result, the power consumption during the valve closing operation from when the valve is opened is reduced, and the valve body is closed when driven by a strong force with a high voltage and low frequency pulse when the valve is closed for a predetermined time. The urging force to the valve seat is increased and the sealing performance of the valve part is improved.
[0024]
Further, according to the third aspect of the present invention, opening operation upon initial valve element drives the driving means high voltage and the low frequency pulse, to detect the opening formed state of the valve unit in the valve closing detecting means, the valve Power consumption of the drive means required for valve opening operation to control to drive with low voltage and high frequency pulse in a state where the body is slightly opened and the urging force of the fluid acting in the opposite direction on the valve body is reduced Can be reduced.
[0025]
Also, the closing formed during operation initially the driving means low voltage of the valve body, and the high-frequency driven by the pulse, the drive means after detecting that the detected valve body valve-closed forming state valve detection means has closed Is controlled so as to switch to driving with a high voltage and low frequency pulse, thereby reducing the power consumption of the driving means required for the valve closing operation and increasing the urging force to the valve seat of the valve body when the valve is closed. It is possible to improve the valve sealing performance.
[Brief description of the drawings]
FIG. 1 is a block diagram of a gas meter in Embodiment 1 of the present invention. FIG. 2 is a block diagram of the gas meter. FIG. 3 is a sectional view of the gas meter when a valve is opened. Sectional view when the valve of the gas meter is opened [Fig. 5] Sectional diagram when the valve portion of the gas meter is closed [Fig. 6] Flow chart when the valve portion of the gas meter is closed [Figure 7] Valve portion of the gas meter FIG. 8 is a block diagram of the gas meter according to the second embodiment of the present invention. FIG. 9 is a block diagram of the gas meter. FIG. 10 is a valve meter of the gas meter. Flowchart [FIG. 11] Operation flow chart during valve closing operation of valve portion of same gas meter [FIG. 12] Block configuration diagram of gas meter in Embodiment 3 of the present invention [FIG. 13] Block configuration diagram of same gas meter [FIG. Flowchart during valve opening operation of the valve portion of the gas meter. FIG. 15 Flowchart of valve operation during valve closing operation of the valve portion of the gas meter. FIG. 16 Block configuration diagram in a conventional valve control method.
10 channel 11 valve part 12 stepping motor (drive means)
DESCRIPTION OF SYMBOLS 13 Flow measurement means 14 Operation processing part 15 Drive circuit 16 Voltage control means 17 Battery power supply part 22 Valve seat 23 Valve body 24 Timer means 25 Valve opening / closing detection means

Claims (3)

A valve part that opens and closes the flow path, a valve body provided inside the valve part , a drive unit that drives the valve body , a flow rate measurement unit that measures the flow rate of the fluid to be detected flowing through the flow path, An arithmetic processing unit that performs arithmetic processing on a signal from the flow rate measuring unit, a driving circuit that inputs a signal from the arithmetic processing unit and outputs a driving signal as a pulse signal to the driving unit, and an output voltage of the driving circuit and voltage control means for variably controlling, and a power supply unit, the driving signal to the driving means during the opening operation and the closing operation of the valve body, due to the flow of fluid with respect to the direction of movement of the valve body The drive voltage and pulse output frequency when the fluid pressure due to the flow of fluid acts in the opposite direction to the moving direction of the valve body are higher than the drive voltage and pulse output frequency when the fluid pressure acts in the forward direction. voltage, the low frequency and the fluid control valve Control device. A timer means to count between time, if at the time of opening operation of the valve element acting fluid pressure in the moving direction opposite of said valve body, sufficient time elapses counted by the valve opening of said timer means After that , the valve body is driven by a pulse signal having a lower frequency and a higher frequency than the drive voltage and the pulse output frequency at the initial stage of the opening operation , and at the same time as the moving direction of the valve body during the closing operation of the valve body. When fluid pressure is applied, after a sufficient time has passed for the valve body to close by counting of the timer means, a pulse having a voltage higher than the driving voltage and pulse output frequency at the initial stage of the closing operation and a low frequency is applied. The fluid control valve control device according to claim 1 , wherein the valve body is driven by a signal. Valve opening / closing detecting means for detecting opening / closing of the valve body , and when the valve body is opened, when the fluid pressure acts in the direction opposite to the moving direction of the valve body, the valve body is detected by the valve opening / closing detection means. When it is detected that the valve body is open, the valve body is driven by a pulse signal having a voltage lower than and higher than the drive voltage and pulse output frequency before detection , and at the time of closing the valve body. When the fluid pressure acts in the same direction as the movement direction of the valve, if the valve opening / closing detection means detects that the valve body is closed, the drive voltage before detection and the pulse output frequency are higher than The fluid control valve control device according to claim 1 , wherein the valve body is driven by a low-frequency pulse signal.

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