JP2009138340A - Method for controlling melting snow pump operation, melting snow pumping device, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for controlling melting snow pump operation for saving energy and amount of water used more than a conventional method. <P>SOLUTION: This melting snow pumping device is provided with a pump 22 for pressurizing the water sucked from a water source and supplying the pressurized water into a water spray pipe 27, a falling snow sensor 41 counting the number of snowflakes per unit hour to obtain a value of detected snow fall strength, and a control part 30 for controlling operation hour of the pump 22 based on the values of detected snow fall strength. The control part 30 sets this melting snow pumping device to operation stop conditions when the value of detected snow fall strength is smaller than a first value K1 of snow fall strength fixed in advance, intermittent operation conditions when the value M of detected snow fall strength is larger than the first value K1 of snow fall strength and is smaller than a second value K2 of snow fall strength, and continuous operation conditions when the value M of detected snow fall strength is larger than the second value K2 of snow fall strength. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a snow pump operation control method, a snow pump device, and a program for removing snow falling on a road surface by ground water or the like, and particularly to a device that can obtain a sufficient energy saving effect and water saving effect. .

  There is widely known a snow extinguishing pump device configured such that water from groundwater or the like is pumped into a pipe under a road and fed into a pipe, and groundwater is ejected from a nozzle provided in the pipe to the ground (for example, Patent Document 1). To 3).

  In order to save water, the snow-pumping pump device is devised to make the water supply amount and water supply pressure proportional to the snowfall intensity. However, if the amount of snowfall is small and the amount of sprinkling is too small, the sprinkled water flows in a plane shape and flows in a string shape, so that snow remains. In addition, if the amount of water spray is increased so that it flows in a plane, the snow-dissipating effect is good, but when there is little snowfall, the water will be excessively sprinkled. It becomes difficult.

In order to improve the water-saving effect, the variable speed pump with constant target pressure control changes the time ratio setting according to the snowfall intensity, so that when there is little snowfall, wasteful watering is not performed and the surface of the road is surfaced. A snow-pumping pump device is known that can flow in a shape and achieve both a snow-dissipating effect and water saving (see, for example, Patent Document 4).
Japanese Patent Application Laid-Open No. 56-167011 Japanese Utility Model Publication No. 63-45817 Japanese Examined Patent Publication No. 04-47081 Japanese Patent Laid-Open No. 08-193313

  The above-described snow pump operation method of the snow pump device has the following problems. That is, if the amount of snowfall is small and the amount of water spray is too small, the water sprayed flows in a plane shape and flows in a string shape, so that snow remains. In addition, if the amount of water spray is increased so that it flows in a plane, the snow-dissipating effect is good, but when there is little snowfall, the water will be excessively sprinkled. It becomes difficult. Further, in the control method for adjusting the amount of water sprayed from the snowpump, a complicated calculation formula must be used, which may complicate operation control. In addition, since water spraying is continuously performed even in a small amount, it could not be used in areas where there is a risk of ground subsidence due to the use of groundwater.

  Therefore, an object of the present invention is to provide a snow-pump operation control method, a snow-pump pump device, and a program that are more energy-saving and can perform control with an emphasis on water saving.

  In order to solve the above-mentioned problems and achieve the object, the snow-pump operation control method and the snow-pump device of the present invention are configured as follows.

  In the snow-pump operation control method for controlling the operation / stop of the snow-pump pump, the number of snowflakes per unit time is counted to determine the detected snow strength value, and the extinction based on the detected snow strength value. A control step of controlling the operation time of the snow pump based on a predetermined operation condition, wherein the operation condition is a stop operation condition when the detected snowfall intensity value is smaller than a predetermined first snowfall intensity value. When the detected snowfall intensity value is larger than the first snowfall intensity value and smaller than the second snowfall intensity value larger than the first snowfall intensity value, the intermittent operation condition is set, and the detected snowfall intensity value is the second snowfall intensity value. When it is larger than the snowfall intensity value, it is characterized by a continuous operation condition.

  A snow extinguishing pump that pressurizes water sucked from the water source and supplies it to the watering pipe, a snowfall sensor that counts the number of snowflakes per unit time to obtain a detected snowfall intensity value, and the extinction based on the detected snowfall intensity value. A control unit that controls an operation time of the snow pump, and the control unit sets an operation stop condition when the detected snowfall intensity value is smaller than a predetermined first snowfall intensity value, and the detected snowfall intensity value is The intermittent operation condition is set when the snowfall intensity value is greater than the first snowfall intensity value and smaller than the second snowfall intensity value greater than the first snowfall intensity value, and the detected snowfall intensity value is greater than the second snowfall intensity value. Is characterized by continuous operating conditions.

  In the program for operating the computer, in the snow-pump operation control method for controlling the operation / stop of the snow-pump, the snow-fall strength judgment function for counting the number of snowflakes per unit time and obtaining the detected snow-fall strength value, And a control function for controlling the operation time of the snowpump based on a predetermined operating condition based on the detected snowfall intensity value, wherein the operating condition is a first snowfall intensity value in which the detected snowfall intensity value is predetermined. The detected snowfall intensity value is greater than the first snowfall intensity value and is smaller than the second snowfall intensity value that is greater than the first snowfall intensity value, and the intermittent operation condition. When the detected snowfall intensity value is larger than the second snowfall intensity value, a continuous operation condition is set.

  According to the present invention, it is possible to perform control that is more energy-saving and emphasizes water saving.

  FIG. 1 is an explanatory view showing a snow-pumping pump device 10 controlled by a snow-pumping pump operation control method according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a control principle in the snow-pumping pump device 10, and FIG. FIG. 4 is a timing chart showing an example of control in the snow pump device 10. In addition, P in FIG. 1 indicates a well that stores groundwater.

  The snow-pumping pump device 10 includes a pump unit 20, a control unit 30 that controls the operation state of the pump unit 20, and a sensor unit 40.

  The pump unit 20 is submerged in the well P, and a variable speed motor 21 and a pump 22 for pumping up groundwater driven by the motor 21 are submerged.

  The discharge side of the pump 22 is connected to a water supply pipe 26 through a water supply pipe 23, a check valve 24, and a gate valve 25. Further, a water spray pipe 27 is connected downstream of the water supply pipe 26. The watering pipe 27 is provided with a plurality of watering nozzles 28 for melting snow.

  The control unit 30 is based on a drive unit 31 for operating the electric motor 21 at an appropriate speed, a signal input unit 32 to which a signal is input from the sensor unit 40, a signal calculated by the signal input unit 32, and the like. A control circuit 33 for controlling the drive unit 31 is provided, and these are operated by a program inputted in advance.

  In the control circuit 33, various values are set in advance, and operating conditions are determined based on the set values, and the drive unit 31 is controlled according to the operating conditions. Specifically, three types of operation conditions are defined: “continuous operation conditions”, “intermittent operation conditions”, and “stop operation conditions”. Here, the detected snow intensity value is M, the first snow intensity value is K1, the second snow intensity value is K2, the operation frequency is H, and the operation coefficient is n.

  In the “continuous operation condition”, when the detected snowfall intensity value M per predetermined observation time (unit time) is larger than the second snowfall intensity value K2, “continuous operation mode” in which continuous operation is performed is set.

  In the “intermittent operation condition”, intermittent operation is performed when the detected snowfall intensity value M per predetermined observation time (unit time) is larger than the first snowfall intensity value K1 and smaller than the second snowfall intensity value K2. “Intermittent operation mode” is set. In the “intermittent operation mode”, intermittent operation is performed at an operation frequency with an operation frequency of H. Note that n is an operation coefficient, and a numerical value of 0.5 or more and 2 or less is set in advance.

H = {(“M” − “K1”) / “K2” − “K1”)} ⁿ (1)
H obtained from this relational expression (1) is a value larger than 0 and smaller than 1 as shown in the graph of FIG. Based on this operation frequency H, intermittent operation is performed in which operation at time T1 × H and stop at time T1 × (1-H) are repeated.

  In the “stop operation condition”, when the detected snowfall intensity value M per predetermined observation time (unit time) is smaller than the first snowfall intensity value K1, the “stop operation mode” in which the stop operation is performed is set.

  The sensor unit 40 includes a snowfall sensor 41 that counts the number of snowflakes per minute, a moisture sensor 42 that detects moisture, an air temperature sensor 43 that detects air temperature, and a ground temperature sensor 44 that detects ground temperature. .

  The snowplow pump device 10 configured as described above is driven as follows. That is, output signals from the snowfall sensor 41, the moisture sensor 42, the temperature sensor 43, and the ground temperature sensor 44 are input to the signal input unit 32 to determine whether it is raining or snowing. When it is determined that it is snowing, the number of snowflakes per minute is counted by the snowfall sensor 41, and the detected snowfall intensity value M is obtained.

  This detected snowfall intensity value M is input to the control circuit 33, and the above-described operating conditions are determined. When the detected snowfall intensity value M is greater than the first snowfall intensity value K1, the “startup condition” is satisfied, the startup condition is determined, and the vehicle is operated for a preset initial operation time Ts. During this time, a newly detected snowfall intensity value M is detected. Here, it is determined whether the “continuous operation condition”, “intermittent operation condition”, or “stop operation condition” is met.

  When the detected snowfall intensity value M is larger than the second snowfall intensity value K2, “continuous operation mode”, when larger than the first snowfall intensity value K1 and smaller than the second snowfall intensity value K2, “intermittent” When the “operation mode” is smaller than the first snowfall intensity value K1, the “stop operation mode” is set.

  In the “continuous operation mode”, the operation is continuously performed until the detected snowfall intensity value M meets other conditions.

  In the “intermittent operation mode”, the operation frequency H is obtained as described above, and the operation for the time T1 × H and the stop for the time T1 × (1-H) are performed until other conditions are met.

  In the “stop operation mode”, when the stop condition is determined, the operation and the stop are repeated at the immediately preceding operation frequency H for a preset end operation time Te, and the operation ends.

  As described above, the snow-pumping pump device 10 obtains the detected snowfall intensity value M based on the number of snowflakes per minute, and drives the pump unit 20 based on the detected snowfall intensity value M. Appropriate watering can be performed accordingly, and snow can be removed. For this reason, it is possible to enhance the water-saving effect without using wasted power, and to minimize the amount of groundwater used.

  When there is little snowfall, repeat the surface watering for a short time in the "intermittent operation mode", and when there is a lot of snow, the surface watering will be performed continuously in the "continuous operation mode". . In the “intermittent operation mode”, the time during which watering is stopped is several tens of seconds to several minutes, and this time is shortened as the snowfall intensity increases. Therefore, there is very little snow accumulation while watering is stopped, and this snow accumulation is extinguished by watering after several tens of seconds to several minutes. And since watering is performed only for the time according to the snowfall intensity, the watering stops again when the snow cover disappears. When such watering is converted into the amount of water sprayed per unit time, the snowfall intensity and the water sprayed amount are in a proportional relationship, and necessary and sufficient water spraying can be performed.

  Therefore, when the amount of snowfall is small, energy saving and water saving can be realized by intermittently driving the pump unit 20.

  In addition, the operation frequency, which is the drive time of the pump unit 20, can be calculated with a simple calculation formula, and control only by turning on and off the electric motor 21 is sufficient, so that the apparatus cost can be reduced and the durability is improved. Can be made.

  Further, by setting an appropriate operation coefficient n based on the snow quality, temperature, humidity, ground temperature, etc., it becomes possible to perform more accurate control.

  As described above, according to the snow-pumping pump device 10 according to the present embodiment, it is possible to perform a control method that is more energy-saving and emphasizes water saving.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

Explanatory drawing which shows the snow-pumping pump apparatus controlled by the snow-pumping pump operation control method concerning one embodiment of this invention. Explanatory drawing which shows the control principle in the snow extinguishing pump apparatus. The timing chart which shows the example of control in the snow extinguishing pump apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Snow-pumping device, 20 ... Pump part, 21 ... Electric motor, 22 ... Pump, 27 ... Sprinkling pipe, 30 ... Control part, 31 ... Drive part, 32 ... Signal input part, 33 ... Control circuit, 40 ... Sensor part 41 ... Snowfall sensor, 42 ... Moisture sensor, 43 ... Air temperature sensor, 44 ... Ground temperature sensor, P ... Well.

Claims (7)

In the snow-pump operation control method for controlling the operation / stop of the snow-pump pump,
A snowfall strength judgment process for counting the number of snowflakes per unit time and obtaining a detected snowfall strength value,
A control step of controlling the operation time of the snowpump pump based on a predetermined operation condition based on the detected snowfall intensity value,
The operation condition is a stop operation condition when the detected snowfall intensity value is smaller than a predetermined first snowfall intensity value, and the detected snowfall intensity value is larger than the first snowfall intensity value. A snow extinguishing pump characterized in that an intermittent operation condition is set when the second snowfall intensity value is larger than the intensity value, and a continuous operation condition is set when the detected snowfall intensity value is larger than the second snowfall intensity value. Operation control method. The intermittent operation conditions are as follows: when the operation frequency is H, the operation coefficient is n, the detected snow intensity value is M, the first snow intensity value is K1, and the second snow intensity value is K2.
H = {("M"-"K1") / "K2"-"K1")} ⁿ
The snow-pump operation control method according to claim 1, wherein:   The operation coefficient n is 0.5 or more and 2 or less, The snow-pumping operation control method of Claim 2 characterized by the above-mentioned.   The snowfall pump operation control method according to claim 1, wherein the snowfall intensity determination step determines raindrops and snowflakes based on at least one of moisture, air temperature, and ground temperature.   The snow-control pump operation control method according to claim 1, wherein the operation control step makes the drive speed of the snow-pump pump variable. A snow pump that pressurizes the water sucked from the water source and supplies it to the watering pipe;
A snowfall sensor that counts the number of snowflakes per unit time and obtains the detected snowfall intensity value;
A control unit for controlling an operation time of the snowpump based on the detected snowfall intensity value,
The control unit sets an operation stop condition when the detected snowfall intensity value is smaller than a predetermined first snowfall intensity value, and the detected snowfall intensity value is larger than the first snowfall intensity value. A snow extinguishing pump characterized in that an intermittent operation condition is set when the second snowfall intensity value is larger than an intensity value, and a continuous operation condition is set when the detected snowfall intensity value is larger than the second snowfall intensity value. apparatus. In a program for operating a computer,
In the snow-pump operation control method for controlling the operation / stop of the snow-pump pump,
Snowfall strength judgment function that counts the number of snowflakes per unit time and obtains the detected snowfall strength value,
A control function for controlling an operation time of the snowpump based on a predetermined operation condition based on the detected snowfall intensity value;
The operation condition is a stop operation condition when the detected snowfall intensity value is smaller than a predetermined first snowfall intensity value, and the detected snowfall intensity value is larger than the first snowfall intensity value. A program characterized in that the intermittent operation condition is set when the second snowfall intensity value is larger than the intensity value, and the continuous operation condition is set when the detected snowfall intensity value is larger than the second snowfall intensity value.

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