JPH06102124A - Differential pressure measuring device - Google Patents

Abstract

PURPOSE:To easily and accurately measure differential pressure in an arbitrary measuring position. CONSTITUTION:An outdoor machine 2 consisting of an outdoor pressure measuring part 5 and a transmission part 6 is arranged outdoors and an indoor machine 10 consisting of an indoor pressure measuring part 12, a receiving part 13, an operational control part 17 and a display part 16 is arranged indoors. The outdoor pressure measured by the outdoor machine is transmitted to the indoor machine as outdoor pressure data DAT 1 by a radio system and the indoor machine measures indoor pressure as indoor pressure data DAT 2 and differential pressure data DAT 3 and statistic data DAT 4 are calculated on the basis of the pressure data DAT 1, DAT 2 by the operational control part of the indoor machine to be displayed on the display part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a large building,
The present invention relates to a differential pressure measuring device suitable for measuring a differential pressure between indoor and outdoor arbitrary positions.

[0002]

2. Description of the Related Art Generally, in a large building such as a factory or a building where a large space is formed, the pressure difference between the outdoor pressure and the indoor pressure is measured when verifying the air conditioning performance such as maintenance of the air conditioner. By doing so, the air conditioning is performed as designed so that the indoor pressure is higher than the outdoor pressure, and whether the indoor / outdoor differential pressure is too large and the air conditioner is overloaded. It is necessary to confirm the performance. Also, in a clean room or the like, in order to maintain the cleanliness of the room, it is necessary to make the pressure inside the room higher than the pressure outside the room so as to prevent dust and the like from entering the room. In order to maintain a good working environment, it is possible to operate the fan as appropriate by grasping the natural ventilation volume to see how much natural ventilation is performed by the pressure difference between indoors and outdoors,
It is desired to open and close the gallery. Thus, the pressure difference between the indoor and outdoor needs to be measured for verification of air conditioning performance, maintenance of cleanliness, grasp of natural ventilation, and the like. Conventionally, this indoor / outdoor differential pressure has been measured by a manometer or the like. That is, two pressures, an outdoor pressure and an indoor pressure, are guided to a manometer by a tube to measure the differential pressure. Further, in many cases, an opening or the like for measuring the outdoor pressure is not provided in a building, so that the outdoor pressure can be controlled by taking the tip of the tube out through the opening such as a window to the outside. The tube led to the manometer.

[0003]

However, in this case, when the indoor pressure measurement point is remote from the outdoor, it is necessary to install the tube over a long distance, and the indoor tube cannot be moved to any place indoors. However, when performing the measurement, it was necessary to redraw the tube, which was very time-consuming and labor-intensive. Furthermore, when the tube is installed over a long distance, the effects of pressure loss of the tube, the effect of the air weight inside the tube being different indoors and outdoors, and the like have occurred as errors.

Therefore, in view of the above circumstances, an object of the present invention is to provide a differential pressure measuring device capable of easily and accurately measuring at an arbitrary measuring position.

[0005]

That is, the present invention has a reference station (2) and a mobile station (10), wherein the reference station is a first station.
Pressure measuring means (5) is provided, and the first communication control section (6) measures the pressure measured by the first pressure measuring means as the first pressure measuring means.
Pressure data (DAT1) for wireless transmission to the mobile station, the mobile station is provided with a second pressure measuring means (12), and a second communication control section (13) is provided.
Is provided in a form capable of receiving the first pressure data transmitted by the first communication control unit, and the mobile station is provided with a first control unit that receives arithmetic control means (17) by the second communication control unit. Differential pressure data (DAT) based on the second pressure data (DAT2) measured by the second pressure measuring means.
3, DAT 4) can be calculated, and a display unit (16) can be further provided in the mobile station so as to display the differential pressure data.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings. The same applies to the column of "action" below.

[0007]

With the above-mentioned structure, according to the present invention, when the reference station (2) is installed outdoors and the mobile station (10) is installed indoors,
The outdoor pressure is measured by the first pressure measuring means (5) of the reference station, and the outdoor pressure is measured as the first pressure data (DAT).
As 1), the first communication control unit (6) wirelessly transmits the data to the second communication control unit (13) of the mobile station installed indoors so that it can be installed indoors by using a long tube from the outdoors as in the past. A mobile station installed indoors acts so as to be able to acquire pressure outdoors, without leading to a manometer for differential pressure measurement.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an embodiment of a differential pressure measuring device according to the present invention, FIG. 2 is a control block diagram of an indoor unit of the differential pressure measuring device shown in FIG. 1, and FIG. 3 is shown in FIG. The figure which shows the flowchart of the calculation program of the indoor unit of a differential pressure measuring device,
FIG. 4 is a schematic diagram showing an example of measuring the differential pressure inside and outside a factory or the like using the differential pressure measuring device shown in FIG. 1, and FIG. 5 is a high-rise building using the differential pressure measuring device shown in FIG. It is a schematic diagram which shows the example which measures the pressure difference indoors and outdoors of a building etc.

As shown in FIG. 1, a differential pressure measuring apparatus 1 to which the differential pressure measuring apparatus according to the present invention is applied is composed of an outdoor unit 2 and an indoor unit 10. The outdoor unit 2 and the indoor unit 10 are
It is provided so that data can be transmitted and received wirelessly.
That is, the outdoor unit 2 has the main body 3, and the outdoor pressure measuring unit 5 such as a barometer is provided on the side surface of the main body 3 with the outdoor pressure measuring unit 5.
The outdoor pressure P1, which is the atmospheric pressure around, is provided so that it can be measured. The transmitter 6 is connected to the outdoor pressure measuring unit 5 in such a manner that the outdoor pressure P1 measured by the outdoor pressure measuring unit 5 can be output to the transmitting unit 6 as outdoor pressure data DAT1. The outdoor pressure data DAT1 output by the measuring unit 5 is provided in a form capable of being transmitted to an indoor unit 10 described later via an antenna 6a. Also,
A battery 7 is provided in the main body 3 so as to be able to supply electric power to the transmitter 6 and the outdoor pressure measuring unit 5. Further, a handle 3a can carry the outdoor unit 2 on the upper portion of the main body 3. It is provided in the shape.

The outdoor pressure data DAT1 output by the outdoor pressure measuring unit 5 is capable of identifying the outdoor unit 2 transmitting the outdoor pressure P1 in addition to the outdoor pressure P1 measured by the outdoor pressure measuring unit 5. The number IDNO and the measurement time t at which the outdoor pressure P1 is measured are provided, that is, the measurement time t at which the outdoor pressure P1 is measured and the outdoor unit 2 that has transmitted the outdoor pressure P1 can be recognized. That is, for example, the outdoor unit 2
If the identification number IDNO of is set to IDNO = 9999,
When the outdoor pressure P1 of the outdoor 60 measured at 15:01:52 on June 19, 1992, by the outdoor unit 2 having the identification number IDNO of 9999 is 1020 mb,
For example, the outdoor pressure data DAT1 is "9999-19.
It is transmitted to the indoor unit 10 to be described later with a model such as “92061915025-1020”. Note that the outdoor pressure data DAT1 "9999-19920619".
"150152-1020", "9999" means that the identification number IDNO of the outdoor unit 2 is 9999, and "920619150152" means that the measurement time t at which the outdoor pressure P1 is measured is June 19, 1992 15 AD.
Means hour 01 minute 52 seconds, "1020" is the outdoor pressure P1
Means 1020mb.

Therefore, when the outdoor unit 2 is operated, the outdoor pressure measuring unit 5 and the transmitting unit 6 are supplied with electric power from the battery 7, and the outdoor pressure measuring unit 5 detects the outdoor pressure P1 around the outdoor unit 2. After the outdoor pressure P1 is measured, the outdoor unit 2 is identified by the identification number IDNO and the measurement time t, and the outdoor pressure data DAT1 is obtained.
Is output. The transmitter 6 uses the outdoor pressure data DAT1.
Is transmitted to the indoor unit 10 described later via the antenna 6a.

On the other hand, the indoor unit 10 is, as shown in FIG.
It has a main control unit 20, and an indoor pressure measuring unit 12, a receiving unit 13, an input unit 15, a display unit 16, an arithmetic control unit 17, etc. are connected to the main control unit 20 via a bus line 19. There is.
The display unit 16 includes a display control unit 16a and a display screen 16b. The calculation control unit 17 includes a differential pressure calculation unit 21, a statistical calculation unit 22, an outdoor pressure data memory 23, an indoor pressure data memory 25, and a differential pressure data memory. 26, a statistical data memory 27, a unit conversion unit 28, a storage medium information reading / writing unit 30, an arithmetic program memory 35, and the like. Also,
A buffer memory 29 is connected to the unit converter 28.

That is, the indoor unit 10 is, as shown in FIG.
It has a main body 11, and an indoor pressure measuring unit 12 such as a barometer is provided on a side surface of the main body 11 in a form capable of measuring an indoor pressure P2 around the indoor pressure measuring unit 12. The indoor pressure measuring unit 12 is connected in such a manner that the indoor pressure P2 measured by the indoor pressure measuring unit 12 can be output to the main control unit 20 as indoor pressure data DAT2. The indoor pressure data DAT2 output by the indoor pressure measurement unit 12 includes the identification number I that can identify the indoor unit 10 that measured the indoor pressure P2 in addition to the indoor pressure P2 measured by the indoor pressure measurement unit 12.
DNO and a form in which a measurement time t at which the indoor pressure P2 is measured is added, that is, a measurement time t at which the indoor pressure P2 is measured.
Also, the indoor unit 10 is formed in such a form that the measured indoor unit 10 can be recognized. Further, as shown in FIG. 1, a receiving unit 13 is provided in the main body 11 in a form capable of receiving the outdoor pressure data DAT1 transmitted by the transmitting unit 6 of the outdoor unit 2 via the antenna 13a. The reception unit 13 is connected in such a manner that the outdoor pressure data DAT1 received by the reception unit 13 can be output to the main control unit 20. Further, the main body 11 is provided with an input unit 15 such as a keyboard in a form capable of inputting an operator's instruction to the main control unit 20.
Display unit 1 including display control unit 16a and display screen 16b
6 is provided in a form capable of displaying the data processed by the arithmetic control unit 17.

Therefore, when the indoor unit 10 is operated, the indoor pressure measuring unit 12, the receiving unit 13, the arithmetic control unit 17 and the like are supplied with power from a power source (not shown), and the indoor pressure measuring unit 1
2 measures the indoor pressure P2 around the indoor unit 10, adds the identification number IDNO and the measurement time t to the indoor pressure P2, sets the indoor pressure data DAT2, and then the indoor pressure data DAT2 to the main controller 20. Output. In addition, the receiving unit 13
Is the outdoor pressure data DA output from the transmitter 6 of the outdoor unit 2.
The main controller 20 receives T1 via the antenna 13a.
The outdoor pressure data DAT1 is output to. Then, the main control unit 20 reads the outdoor pressure data DAT1 and the indoor pressure data DAT2, and the outdoor pressure data DA
The T1 and the indoor pressure data DAT2 are stored in the outdoor pressure data memory 23 and the indoor pressure data memory 25, respectively, and various calculations as described below are executed.

Since the present invention has the above-mentioned configuration, in order to measure the indoor and outdoor differential pressure using the differential pressure measuring device 1, for example, as shown in FIG. 1st factory 41, 2nd factory 42, 3rd factory 43 which should measure
In the indoor units 41a, 42a, 43a of the first to third factories 41, 42, 43, respectively,
A, 10B, and 10C are installed, and the outdoor unit 2 is installed outdoors 60. Then, the outdoor unit 2 and each indoor unit 10
Activate A, 10B, 10C.

First, when the outdoor unit 2 is operated, the transmitter 6 and the outdoor pressure measuring unit 5 shown in FIG. The pressure P1 is measured, and the outdoor pressure P1 measured by the outdoor pressure measuring unit 5 is output to the transmitting unit 6 as the outdoor pressure data DAT1, and the transmitting unit 6 determines the first to third factories 41, 42, 4 and 4.
The outdoor pressure data DAT1 which is the outdoor pressure P1 of the outdoor 60 shown in FIG. 4 via the antenna 6a shown in FIG. 1 with respect to each indoor unit 10A, 10B, 10C installed in each indoor 41a, 42a, 43a of No. 3 To send. For example, assuming that the identification number IDNO of the outdoor unit 2 is IDNO = 9999, the outdoor pressure of the outdoor unit 60 measured at 15:01:52 on June 19, 1992 AD by the outdoor unit 2 with the identification number IDNO of 9999. When P1 is 1020 mb, for example, the outdoor pressure data DAT1 is set to "9999.
It is transmitted to each indoor unit 10A, 10B, 10C in a model such as "-19920619150152-1020".

On the other hand, each indoor unit 1 installed in each room 41a, 42a, 43a of the first to third factories 41, 42, 43
Each indoor unit 10 when operating 0A, 10B, 10C
Regarding the movements relating to A, 10B, and 10C, the indoor units 10A, 10B, and 10C have the same configuration, and the outdoor pressure data DAT1 to which the identification number IDNO and the measurement time t are added is similarly received from the outdoor unit 2. Therefore, the case where the indoor unit 10A installed in the room 41a of the first factory 41 is operated will be described below as a representative.

That is, when the indoor unit 10A installed in the room 41a of the first factory 41 is operated, the indoor pressure measuring unit 12 shown in FIG. 1 starts measuring the indoor pressure of the room 41a around the indoor unit 10A. Then, the indoor pressure data DAT2 is formed in such a manner that the indoor pressure P1 measured by the indoor pressure measuring unit 12 is provided with the identification number IDNO (for example, IDNO = 0001) of the indoor unit 10A and the measurement time t, and the main control unit is formed. Start outputting to 20. Further, the receiver 13 receives the outdoor pressure data DAT1 output by the transmitter 6 of the outdoor unit 2 from the antenna 13a.
To start receiving via.

By the way, the functions of the indoor unit 10 include calculation and display of differential pressure, display of statistical data of the calculated differential pressure, conversion of pressure unit, and the like, and the main control unit 2 is operated via the input unit 15.
These functions can be selectively commanded to 0. That is, the differential pressure display function for calculating and displaying the differential pressure is the result of calculating the differential pressure DP between the outdoor pressure P1 outside 60 and the indoor pressure P2 inside the room 41a (differential pressure DP = outdoor pressure P1-indoor pressure P2). Is displayed on the display unit 16, and when the operator selects this differential pressure display function, the operator uses the input unit 15
A differential pressure display command DPC is input from the above to command the main control unit 20 to display the differential pressure DP. In addition, the statistical processing display function that displays the statistical data of the calculated differential pressure,
The result of calculating the average value, the maximum value, the minimum value, and the standard deviation of the calculated differential pressure DP is displayed on the display unit 16. When the statistical display function is selected, the statistical processing display is performed from the input unit 15. The command SPC is input to command the main control unit 20 to display the statistical data DAT4.
Further, in the pressure unit conversion function for converting the pressure unit, the outdoor pressure P1, the indoor pressure P2, the differential pressure DP, and the statistical data DAT4 are usually used as the pressure unit, which is normally used. The pressure unit "mb" is, for example, "mmA
It is converted into pressure units such as "q", "Pa", "kg / cm ² ", etc., and the pressure unit of the data displayed on the display unit 16 is "m".
When it is desired to display in a unit other than “b”, a desired pressure unit (for example, the unit conversion command UCC from the input unit 15 (for example,
(mmAq, Pa, kg / cm ^2, etc.) to instruct the main control unit 20 to convert the pressure unit of the data displayed on the display unit 16 into a desired pressure unit.

Therefore, for example, when it is desired to confirm the differential pressure DP between the indoor 41a and the outdoor 60 of the first factory 41 at each measurement time t, the differential pressure display command DPC is input from the input unit 15 of the indoor unit 10A shown in FIG. 2 is input to the main control unit 20 shown in FIG.
Command to display at 6. If you want to display the pressure unit in units of "mmAq", for example, input unit 1
Input the desired pressure unit (in this case, mmAq) together with the unit conversion command UCC from 5, and convert the pressure unit of the data displayed on the display unit 16 into the pressure unit of “mmAq” to the main control unit 20. Command to do so. Then, the main control unit 20 shown in FIG. 2, which receives the differential pressure display command DPC, reads out the arithmetic program DDT composed of a plurality of steps S shown in FIG. 3 from the arithmetic program memory 35, and operates based on the arithmetic program DDT. Proceed.

First, as step S1 of the arithmetic program DDT shown in FIG. 3, the main controller 20 shown in FIG. 2 confirms whether to display the differential pressure data DAT3 or the statistical data DAT4. That is, the main controller 20
It is confirmed whether the differential pressure display command DPC or the statistical processing display command SPC is received from the input unit 15. In this case, it is recognized that the differential pressure display command DPC has been received, and then the process proceeds to step S2 to calculate the differential pressure as described later. If the statistical processing display command SPC has been input from the input unit 15, the main control unit 2 executes the step S1.
0 recognizes the statistical processing display command SPC, then proceeds to step S7 and performs statistical processing as described later. When neither the differential pressure display command DPC nor the statistical processing display command SPC is received, as in the case of a malfunction, etc., the processing ends.

Therefore, in step S1, the main control unit 20 that has recognized the differential pressure display command DPC proceeds to step S2 of the calculation program DDT, and in step S2, the main control unit 20 receives the reception unit 13. The outdoor pressure data DAT1 is read, the outdoor pressure data DAT1 is stored in the outdoor pressure data memory 23, the indoor pressure data DAT2 measured by the indoor pressure measuring unit 12 is read, and the indoor pressure data memory 25 of the calculation control unit 17 is indoors. The pressure data DAT2 is stored. Next, as step S3 of the calculation program DDT, the main control unit 20 sets the differential pressure DP between the outdoor pressure P1 of the outdoor 60 and the indoor pressure P2 of the indoor 41a to the differential pressure calculation unit 21 of the arithmetic control unit 17. It is instructed to calculate the differential pressure data DAT3.

Then, the differential pressure calculation unit 21 that has received the differential pressure calculation instruction receives the outdoor pressure data D at the same measurement time t.
The AT1 and the indoor pressure data DAT2 are read from the outdoor pressure data memory 23 and the indoor pressure data memory 25, respectively. For example, the differential pressure calculation unit 21 reads the outdoor pressure data D at the measurement time t1 from the outdoor pressure data memory 23.
At the same time as reading AT1, the indoor pressure data DAT2 at the measurement time t1 is read from the indoor pressure data memory 25. Then, the indoor / outdoor differential pressure data DAT3 is calculated based on the outdoor pressure data DAT1 and the indoor pressure data DAT2 at the same measurement time t1. That is,
After recognizing that the measurement time t1 in the outdoor pressure data DAT1 and the measurement time t1 in the indoor pressure data DAT2 are the same, the differential pressure calculation unit 21 determines the outdoor pressure data DAT.
The indoor pressure P2 in the indoor pressure data DAT2 is subtracted from the outdoor pressure P1 in 1 to obtain the differential pressure DP. The differential pressure data DAT3 calculated by the differential pressure calculation unit 21 is the differential pressure D between the outdoor pressure P1 and the indoor pressure P2 obtained as described above.
In addition to P, an identification number IDNO capable of identifying the indoor unit 10A that has calculated the differential pressure data DAT3 and a measurement time t at which the outdoor pressure P1 and the indoor pressure P2 are measured, that is, the outdoor pressure The measurement time t at which P1 and the indoor pressure P2 are measured and the calculated indoor unit 10 are formed so as to be recognizable. Then, the differential pressure calculation unit 21 stores the calculated differential pressure data DAT3 in the differential pressure data memory 26.
And stores the differential pressure data DAT3 in the differential pressure data memory 26.
The differential pressure calculation unit 21 stored in the table outputs to the main control unit 20 that the differential pressure calculation has been completed.

Next, the main control unit 20 having received the differential pressure calculation of the differential pressure calculation unit 21 of the calculation control unit 17 proceeds to step S4 of the calculation program DDT, and as step S4,
Check the necessity of pressure unit conversion. That is, the main controller 20
Confirms whether the unit conversion command UCC is received from the input unit 15. In this case, the main control unit 20 recognizes that the unit conversion command UCC is input from the input unit 15, and converts the pressure unit. On the other hand, if the unit conversion command UCC has not been input from the input unit 15, the main control unit 20 sets the unit conversion command U from the input unit 15 in step S4.
Recognizing that CC is not input, the pressure unit is not converted, and then the process proceeds to step S6 to display on the display unit 16 as described later.

Therefore, in step S4, the main control unit 20 that has recognized the unit conversion command UCC proceeds to step S5 of the calculation program DDT, and in step S5, the main control unit 20 determines the unit of the calculation control unit 17. Converter 28
To the conversion unit of the pressure difference data DAT3. Then, the unit conversion unit 28 that has received the pressure unit conversion instruction reads the differential pressure data DAT3 from the differential pressure data memory 26, and reads the differential pressure data D.
Desired pressure unit "mm" instructed AT3 unit "mb"
Aq ”, unit conversion differential pressure data DAT3M is formed and immediately stored in the buffer memory 29. Then, the unit conversion unit 28 that has stored the unit conversion differential pressure data DAT3M that has completed the unit conversion in the buffer memory 29 outputs the end of the unit conversion to the main control unit 20. In the differential pressure data memory 26, the state before being converted into the instructed desired pressure unit, that is, the unit “m” of the read differential pressure data DAT3.
The differential pressure data DAT3 is stored in the state of "b".

Next, the main control unit 20 which has received the completion of the unit conversion of the unit conversion unit 28 of the arithmetic control unit 17 displays on the display control unit 16a of the display unit 16 as step S6 of the arithmetic program DDT. The display screen 16b of the unit 16 is instructed to display the unit conversion differential pressure data DAT3M after the unit conversion in the form of numerical values and a graph (a graph in which the horizontal axis represents time and the vertical axis represents differential pressure). Then, the display control unit 16a receiving the instruction to display the differential pressure data after the unit conversion is performed by the calculation control unit 1
The unit conversion differential pressure data DAT3M converted into a desired pressure unit is read out from the buffer memory 29 of FIG.
As shown in, the unit conversion differential pressure data DAT3M is displayed on the display screen 16b of the display unit 16 in the form of numerical values and graphs. If the unit conversion command UCC is not input from the input unit 15 and the pressure unit conversion is not performed, the display control unit 16a that has received the differential pressure display instruction from the main control unit 20 determines that the pressure difference has not been converted in step S6. The differential pressure data DAT3 is read from the pressure data memory 26 and displayed on the display screen 1 of the display unit 16.
The differential pressure data DAT3 is displayed on 6b in the form of numerical values and graphs.

As described above, the interior 41a of the first factory 41
In the indoor unit 10A installed in, the main control unit 20 is based on steps S1 to S6 of the calculation program DDT,
By executing the differential pressure calculation display, the differential pressure DP between the outdoor 60 and the indoor 41a at the measurement time t1 can be displayed. Therefore, by repeating the above-described series of processes at each measurement time t, the interior 41a of the first factory 41
In the indoor unit 10A installed in, the differential pressure DP between the outdoor 60 and the indoor 41a can be confirmed at each measurement time t.

Next, in the calculated differential pressure data DAT3 between the indoor 41a of the first factory 41 and the outdoor 60, statistical data DAT4 such as average value, maximum value, minimum value and standard deviation of the differential pressure data DAT3. 1 is input to the indoor unit 10A, the statistical processing display command SPC is input to the main control unit 20 illustrated in FIG. Differential pressure data DAT
It is instructed to display the statistical data DAT4 such as the average value, the maximum value, the minimum value and the standard deviation of 3. Then, the main control unit 20 shown in FIG. 2 which receives the statistical processing display command SPC,
An arithmetic program DDT composed of a plurality of steps S shown in FIG. 3 is read from the arithmetic program memory 35, and the work is advanced based on the arithmetic program DDT.

First, as step S1 of the arithmetic program DDT shown in FIG. 3, the main controller 20 shown in FIG. 2 confirms whether to display the differential pressure data DAT3 or the statistical data DAT4. That is, the main controller 20
It is confirmed whether the differential pressure display command DPC or the statistical processing display command SPC is received from the input unit 15. In this case, recognizing that the statistical processing display command SPC has been received,
Next, in step S7, statistical processing is performed as described later. In addition, as step S1, the differential pressure display command DP
If neither C nor the statistical processing display command SPC has been received, the process ends.

Therefore, in step S1, the main control unit 20 that has recognized the statistical processing display command SPC proceeds to step S7 of the calculation program DDT, and in step S7, the main control unit 20 controls the calculation control unit 17 to execute. Statistical calculation unit 2
For 2, the statistical processing calculation such as calculation of the average value, the maximum value, the minimum value and the standard deviation of the differential pressure data DAT3 is instructed.
Then, the statistical calculation unit 22 that has received the instruction of the statistical processing calculation
Reads the differential pressure data DAT3 from the differential pressure data memory 26. Next, as step S8 of the calculation program DDT, the statistical calculation unit 22 of the calculation control unit 17 calculates the statistical data DAT4 such as the average value, the maximum value, the minimum value and the standard deviation of the differential pressure data DAT3. DAT4
Are stored in the statistical data memory 27. Then, the statistical calculation unit 22 that stores the statistical data DAT4 in the statistical data memory 27 outputs the end of the statistical processing calculation to the main control unit 20.

Next, the main control unit 20 having received the end of the statistical processing calculation of the statistical calculation unit 22 of the calculation control unit 17 proceeds to step S4 of the calculation program DDT, and as the step S4, the main control unit 20 determines the pressure. Check the necessity of unit conversion.
That is, the main control unit 20 receives the unit conversion command U from the input unit 15.
Confirm whether you have received CC. In this case, the main controller 2
0 recognizes that the unit conversion command UCC is not input from the input unit 15, and does not convert the pressure unit.

Therefore, in step S4, the main control unit 20 recognizing that there is no unit conversion command UCC,
Proceeding to step S6 of the calculation program DDT, as step S6, the main control unit 20 instructs the display control unit 16a of the display unit 16 to display the statistical data DAT4 on the display screen 16b of the display unit 16. Then, the display control unit 16a receiving the instruction to display the statistical data receives the statistical data DAT from the statistical data memory 27 of the arithmetic control unit 17.
4 is read out and displayed on the display screen 16b of the display unit 16. As described above, in the indoor unit 10A installed in the room 41a of the first factory 41, with respect to the already calculated differential pressure data DAT3 between the outdoor 60 and the room 41a, the average value and the maximum value of the differential pressure data DAT3. The statistical data DAT4 such as the minimum value and the standard deviation can be confirmed. It is needless to say that the statistical data DAT4 and the like can also be converted into the desired pressure unit by inputting the unit conversion command UCC from the input unit 15 and the desired pressure unit as described above. .

Further, when it is desired to use the differential pressure data DAT3 and the statistical data DAT4 and the like in an external computing unit, for example, when the differential pressure data DAT3 is used in an external computing unit and the like, as shown in FIG. After setting the storage medium 31 such as an IC memory card in the storage medium information reading / writing unit 30 of the indoor unit 10, the data writing command DWC is input from the input unit 15 of the indoor unit 10 and the storage medium Three
The data to be written in 1 (outdoor pressure data DAT1, indoor pressure data DAT2, differential pressure data DAT3, statistical data DAT4 or all selected) is designated.
For example, the main control unit 20 shown in FIG. 2 is instructed to write the differential pressure data DAT3 into the storage medium 31 via the input unit 15. When receiving the data write command DWC, the main control unit 20 shown in FIG. 2 instructs the storage medium information reading / writing unit 30 of the arithmetic control unit 17 to write the differential pressure data DAT3 to the storage medium 31. To do. The storage medium information reading / writing unit 30 that has received the data writing instruction reads the differential pressure data DAT3 from the differential pressure data memory 26,
The read differential pressure data DAT3 is written in the storage medium 31. Then, the storage medium information reading / writing unit 30 that has finished writing the differential pressure data DAT3 to the storage medium 31 outputs the end of the data writing to the main control unit 20, and the differential pressure data DAT3 to the storage medium 31. Writing ends. Then, the storage medium 31 can be removed from the storage medium information reading / writing unit 30 and used in a desired external computing device or the like. In addition, the differential pressure data DA is stored in the differential pressure data memory 26.
T3 is stored. Similarly, outdoor pressure data D
AT1, indoor pressure data DAT2, statistical data DAT4
Also for the storage medium 31, the storage medium information reading / writing unit 3
Can be written through 0.

Above, typically, the interior 41 of the first factory 41
The indoor unit 10A installed in a has been described.
-Each indoor unit 10B, 10C installed in each room 42a, 43a of the third factory 42, 43 also has each room 42
The indoor pressure P2 of a and 43a is set to the indoor unit 10B,
By performing the same measurement at 10C, the outdoor pressure data DAT1 received from the outdoor unit 2 and each indoor unit 10B, 1
Based on each indoor pressure data DAT2 measured at 0C,
Since the differential pressure data DAT3, the statistical data DAT4, etc. can be calculated in the respective rooms 42a and 43a, the indoor units installed in the respective rooms 42a and 43a of the second to third factories 42 and 43, which are not described. The same applies to 10B and 10C.

As described above, one outdoor unit 2 is installed in the outdoor 60, and the first to third factories 4 which desire to measure the differential pressure DP.
The indoor unit 10 is installed in each of the indoors 41a, 42a, 43a, etc. of 1, 42, 43 (or one indoor unit 1
0 is carried in these rooms 41a, 42a, 43a, etc.), and the indoor pressure P2 is measured to measure the indoor pressure P2 and the indoor pressure data DAT2 measured by the indoor unit 10 based on the outdoor pressure data DAT1. The differential pressure DP can be calculated by the machine 10. That is, 60 outdoors
Outdoor atmospheric pressure data D
As AT1, wirelessly, the first to third factories 41, 42,
It is necessary to guide the atmospheric pressure of the outdoor 60 to each indoor room 41a, 42a, 43a by a long tube as in the conventional case by transmitting to the indoor unit 10 installed in each indoor room 41a, 42a, 43a of 43, etc. Therefore, it is possible to easily move to a desired measurement position and measure easily, and since there is no influence of the air weight in the tube, it is possible to perform accurate measurement.

In the above embodiment, the outdoor unit 2
The outdoor pressure data measured by the outdoor pressure measuring unit 5 is unilaterally transmitted to the indoor unit 10 by the transmitting unit 6 from the outdoor pressure data DA.
Although T1 was always transmitted, the indoor unit 10 only needs to be able to acquire the desired outdoor pressure. For example, when the indoor unit 10 requests the indoor unit 2 to transmit the outdoor pressure data DAT1. Only the outdoor unit 2 has the outdoor pressure data DAT
1 may be provided so as to be transmitted to the indoor unit 10.

In the high-rise building 50 and the like as shown in FIG. 5, the outdoor unit 2 is installed at one point in the outdoor 60. Therefore, in the floor where the indoor unit 10 is installed to measure the differential pressure. Depending on the altitude, the altitude difference between the outdoor unit 2 and the indoor unit 10 becomes large, and the pressure difference depending on the altitude may affect the measured pressure difference. That is, when it is necessary to consider the influence of altitude in the differential pressure measurement, as shown in FIG. 5, the outdoor unit 2 is installed on the workbench 56a or the like of the gondola 56 to measure the differential pressure DP. In order to correspond to the floor on which the indoor unit 10 is installed, the gondola 56 is moved in the vertical direction to position the outdoor unit 2 at the height position of the floor on which the indoor unit 10 is installed. And the altitude of the indoor unit 10 can be made to substantially match, and the influence of the altitude can be ignored.

For example, when measuring the differential pressure DP in the room 51a of the nth floor 51 whose height from the ground is H1, as shown by the solid line in FIG. 5, the room 51a of the nth floor 51 is shown.
In addition to installing the indoor unit 10 in, the work table 56a of the gondola 56 in which the outdoor unit 2 is installed is appropriately moved up and down to be substantially positioned on the nth floor 51 which is the height H1, and then the differential pressure measurement is performed. The outdoor pressure P1 at the same altitude
The differential pressure DP can be calculated based on the indoor pressure P2. In addition, the room 51a of the nth floor 51 having the height H1
After measuring the differential pressure DP at, the indoor unit 10 is installed in the room 52a of the m-th floor 52 whose height from the ground is H2, as indicated by the chain double-dashed line in FIG. ,
The workbench 56a of the gondola 56 having the outdoor unit 2 is appropriately moved up and down to be substantially positioned on the mth floor 52 which is the height H2, and then the differential pressure measurement is performed to outdoors at the same altitude. The differential pressure DP can be calculated based on the pressure P1 and the indoor pressure P2.

Although the outdoor unit 2 is moved up and down so that the workbench 56a of the gondola 56 corresponds to the floor where the measurement of the differential pressure DP is desired, the influence of altitude is ignored. Outdoor unit 2 installed in and the differential pressure DP
The influence of altitude may be ignored by calculating the pressure difference due to the altitude difference from the floor desired to be measured and correcting the outdoor pressure P1 or the indoor pressure P2.

[0040]

As described above, the present invention has the reference station such as the outdoor unit 2 and the mobile station such as the indoor unit 10, and the first pressure measuring means such as the outdoor pressure measuring unit 5 is provided in the reference station. And the first communication controller such as the transmitter 6 wirelessly transmits the pressure measured by the first pressure measuring means to the mobile station as the first pressure data such as the outdoor pressure data DAT1. The indoor pressure measuring unit 12 is provided in
And the like, and a second communication control unit such as the receiving unit 13 is transmitted by the first communication control unit.
Is provided so as to be able to receive the pressure data of the first pressure data, and the mobile station is provided with arithmetic control means such as an arithmetic control section 17 for the first pressure data and the second pressure measurement received by the second communication control section. Differential pressure data DAT3 and statistical data D based on the second pressure data such as the indoor pressure data DAT2 measured by the means.
Since the differential pressure data of AT4 or the like can be calculated, and the mobile station is further provided with a display unit such as the display unit 16 that can display the differential pressure data,

When the reference station is installed outdoors and the mobile station is installed indoors, the first pressure measuring means of the reference station measures the outdoor pressure to wirelessly use the first communication controller as the first pressure data. By transmitting to the second communication control unit of the mobile station installed indoors, the mobile station installed indoors does not need to lead to a manometer for differential pressure measurement installed indoors from the outside with a long tube as in the past. Since the outdoor pressure can be obtained, the mobile station is moved to any desired measurement position, and the first pressure received by the second communication control unit of the mobile station at the desired measurement position. By comparing the data with the second pressure data measured by the second pressure measuring unit of the mobile station, not only the differential pressure can be easily calculated, but also the weight of air in the tube, pressure loss, etc. No impact Since, it is possible to accurately measure. Therefore, it is possible to easily and accurately measure the differential pressure at any measurement position.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a differential pressure measuring device according to the present invention.

FIG. 2 is a control block diagram of an indoor unit of the differential pressure measuring device shown in FIG.

3 is a diagram showing a flowchart of a calculation program of an indoor unit of the differential pressure measuring device shown in FIG.

FIG. 4 is a schematic diagram showing an example of measuring the differential pressure inside and outside a factory or the like using the differential pressure measuring device shown in FIG.

5 is a schematic diagram showing an example of measuring the differential pressure inside and outside a high-rise building or the like using the differential pressure measuring device shown in FIG.

[Explanation of symbols]

 2 ... Reference station (outdoor unit) 5 ... First pressure measuring means (outdoor pressure measuring unit) 6 ... First communication control unit (transmitting unit) 10 ... Mobile station (indoor unit) 12 ... Second Pressure measuring means (indoor pressure measuring section) 13 ... Second communication control section (receiving section) 16 ... Display section (display section) 17 ... Calculation control section (calculation control section) DAT1 ... First pressure Data (outdoor pressure data) DAT2 ... Second pressure data (indoor pressure data) DAT3 ... Differential pressure data (differential pressure data) DAT4 ... Differential pressure data (statistical data)

Claims (1)

[Claims] 1. A reference station and a mobile station are provided, a first pressure measuring means is provided in the reference station, and a pressure measured by the first pressure measuring means by the first communication control unit is a first pressure. Data transmitted wirelessly to the mobile station as data is provided, second pressure measuring means is provided in the mobile station, and a second communication control unit is transmitted by the first communication control unit. The mobile station is provided with a first pressure data received by the second communication control unit and a second pressure measurement unit measured by the second pressure measurement unit. 2. A differential pressure measuring device, wherein the differential pressure data is provided in a form capable of calculating the differential pressure data based on the pressure data 2, and the mobile station is further provided with a display unit capable of displaying the differential pressure data.