JP2003215178A - System for measuring energy - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy measuring system that can reduce the facility cost, and easy to construct in a short time, by making a lighting lamp cord usable in a system to reduce new wiring works, by facilitating installation of a wattmeter and a calorimeter, by eliminating development for a communication software, and by making a commercially available network construction tool usable. <P>SOLUTION: This energy measuring system is constituted of a heat-quantity measuring detector 24 constituted of the clamp type wattmeter 14 for detecting electric power of a power plant or/and an electric power using equipment 13, radiation thermometers 21, 22 and an ultrasonic flowmeter 23 to detect a used heat quantity in an energy using equipment 17, and a communication line for transmitting used-power information detected by the wattmeter 14 and used heat-quantity information detected by the heat-quantity measuring detector 24 to a personal computer 1 for calculating energy, and the communication line is constituted of the lamp cords 3, 4, 8, 9, 10 and an open network of LONWORKS. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an energy measuring system.

[0002]

2. Description of the Related Art In ESCO business and PFI business, it is necessary to measure energy such as electric power consumption and heat consumption, and an energy measuring system is used to measure this energy. As a conventional energy measuring system, a system using a LON network is known and is shown in FIG. Here, the LON network is an intelligent distributed control network developed by Echelon.

In FIG. 2, for example, a is a personal computer arranged on the first floor of the building, b is an intelligent gateway arranged on each floor, c is a power distribution board arranged on each floor, various electric equipment such as lighting, and / or electric power. Device used, d is C for detecting the power used by the power facility or / and the device using power c
A T or PT type power meter, each intelligent gateway b and personal computer a are connected by a network e which is a medium speed LAN using a coaxial cable, and an intelligent gateway b and a power meter d use a twist bear cable. It is connected by the control network f.

For example, g is a cooling equipment arranged on each floor. The cooling equipment g is provided with a pipe h and a fan i through which cold water flows, and a cold water coil j is connected to the pipe h. or,
k and l are pipe insertion type thermometers, m is a pipe insertion type flow meter, and a calorific value measurement detector n is formed by the pipe insertion type thermometers k and l and the pipe insertion type flow meter m. The calorimetric detector n is connected to the intelligent gateway b by a control network o using a twist bear cable.

The electric power used in the electric power equipment or / and the electric power using device c is detected by the electric power meter d and is transmitted to the intelligent gateway b through the control network f as the used electric power information, and the intelligent gateway b.
Is transmitted to the personal computer a via the network e.

On the other hand, the heat quantity detected by the heat quantity measuring detector n is given as heat quantity information to the personal computer a via the control network o, the intelligent gateway b, and the network e.
Based on the heat quantity information, the energy consumption of the entire building is calculated using dedicated energy measurement software.

[0007]

In the above-mentioned conventional energy measuring system, it is necessary to construct the whole by a dedicated network for measuring the energy, and moreover, the cables for the network are all drawn and wired. New wiring work is required. In addition, there are many power meters and they must be connected to cables, and calorimeters must also be connected to piping.

Further, since dedicated software is required for communication of power consumption information, heat consumption information, etc., it takes a lot of time and effort to develop the software, and the dedicated software for energy measurement is also required. Since the software is required, it takes a lot of time and effort to construct the measurement system.

From the above points, in the conventional energy measuring system, the construction period is prolonged and the equipment cost is soared.

In view of the above-mentioned circumstances, the present invention makes it possible to use a power line in a system, thereby reducing new wiring work, facilitating installation of a power meter and a calorimeter, and The purpose of the present invention is to provide an energy measurement system that makes it unnecessary to develop communication software and makes it possible to use a commercially available network construction tool, so that equipment costs are low and construction is easy and in a short period of time. It is what you have done.

[0011]

According to the invention of claim 1, an electric power meter capable of detecting the electric power of an electric power facility or / and a device using electric power, and an amount of heat used by a device using thermal energy can be detected. An energy measuring system comprising: a calorific value measuring detector; and a communication line for transmitting the used electric power information detected by the power meter and the used calorific value information detected by the calorific value measuring detector to a means for calculating energy. Therefore, the communication line is composed of an electric power line and an open network of LONWORKS.

In the invention of claim 2, the communication line from the power meter to the outlet of the power line is LONWORKS.
It is composed of an open network.

According to the third aspect of the present invention, the communication line from the calorific value measurement detector to the power line outlet is LONW.
It is composed of the open network of ORKS.

In the invention of claim 4, the communication line from the means for calculating the energy to the outlet of the power line is constituted by an open network of LONWORKS.

In the invention of claim 5, the power meter is of a clamp type, and in the invention of claim 6, the calorimeter for detecting the temperature of the heat medium and the flow rate of the heat medium are detected by the calorimeter. Consists of a flow meter for
In the invention of claim 7, the thermometer is a radiation thermometer,
The flowmeter is an ultrasonic flowmeter.

The used power information detected by the power meter and the used heat amount information detected by the calorific value measuring detector are transmitted from the communication line to the means for calculating energy, and the used energy is calculated. As a result, it is possible to ascertain the current state of energy usage and to confirm the effects of energy saving equipment and energy saving means.

According to the present invention, a power line can be used as a communication line used in a network for measuring energy, and since the power line can be an existing line, new wiring work is unnecessary. Also, the power meter can be easily and quickly installed by making it a clamp type, and the thermometer of the calorific value measurement detector is composed of a radiation thermometer and the flow meter is composed of an ultrasonic flow meter. Since the thermometer and the flowmeter may be placed near the pipe through which the heat medium flows, they can be easily and quickly installed.

Further, since LONWORKS is an open network, development of communication software is unnecessary and a commercially available network construction tool can be used.

From the above, in the energy measuring system of the present invention, the construction period can be shortened and the equipment cost can be reduced.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an example of an embodiment for carrying out the present invention. In the figure, 1 is, for example, a personal computer arranged on the first floor of the building, 2 is a distribution board arranged on each floor, and 3 is a power line connecting the distribution boards 2 arranged on each floor.

Reference numeral 4 is a power line connected to the distribution board 2 arranged at one end and the other end is connected to an outlet 5 provided on the wall surface of the building interior, and 6 is connected to a transformer type linear adapter 7 at one end. LONWORKS Applicat
Ion control network (open network)
Is a cable. One end of cable 6 is PC 1
Connected to the linear adapter 7 and the outlet 5 at the other end.
Is connected to the electric power line 4. The cable 6 and the linear adapter 7 are commercial products, and the linear adapter 7 has a built-in communication transformer.

8 is a power line connected to each distribution board 2 and wired inside the building, 9 and 10 are power lines branched from the power line 8, and 11 and 12 are provided on the wall surface of the building. It is an outlet to which the ends of the wires 9 and 10 are connected.

Reference numeral 13 denotes various electric power equipment or / and electric power using equipment such as a switchboard arranged on each floor, lighting, and 14 is a clamp type electric power meter for measuring electric power used by the electric power equipment or / and electric power using equipment 13. 15 is a LONWORKS Ap with a transformer type linear adapter 16 connected to one end
It is a cable that is a control network (open network) for application. A power meter 14 is clamped from the outside to a power line of the power facility or / and the power using device 13, and a cable 15 is connected to the power line 9 via a linear adapter 16 and an outlet 11. The cable 15 and the linear adapter 16 are commercial products, and the linear adapter 16 has a built-in communication transformer.

Reference numeral 17 denotes a cooling facility which is a device using heat energy arranged on each floor, for example. The cooling facility 17 is provided with a pipe 18 and a fan 19 through which cold water flows, and a cold water coil 20 is connected to the pipe 18. . Further, 21 and 22 are radiation thermometers arranged near the pipe 18, 23 is an ultrasonic flowmeter arranged near the pipe 18, and the radiation thermometers 21 and 21 are arranged.
2 and the ultrasonic flowmeter 23 form a calorie measuring detector 24.

Reference numeral 25 is a LONWORKS Applica with a transformer type linear adapter 26 connected to one end.
It is a cable that is a control network (open network) for the TV edition. The cable 25 is connected to the power line 10 via the linear adapter 26 and the outlet 12. The cable 25 and the linear adapter 26 are commercial products, and the linear adapter 26 includes a communication transformer. The power lines 3, 4, 8, 9, 1
0, outlets 5, 11 and 12 can use existing ones.

Next, the operation of the illustrated example will be described. The power consumption information used by the power facility or / and the power-using device 13 is detected by the power meter 14 and LONWORKS is used.
A cable 15 which is a control network for application is transmitted, and if it is on the first floor, it goes through the power lines 9 and 8, the distribution board 2 and the power line 4, and if it is on the second floor and above, the power line 9 and 8, the predetermined floor. LONWORKS Appl through the distribution board 2, the power line 3, the first-level distribution board 2, and the power line 4 respectively.
Cable 6 which is a control network for ication
Is transmitted to the personal computer 1.

On the other hand, the heat quantity detected by the heat quantity measuring detector 24 is transmitted through the cable 25 as heat quantity information, and in the case of the first floor, it goes through the power lines 10 and 8, the distribution board 2 and the power line 4, and then again. If it is above the floor, power lines 10 and 8, distribution board 2 on the predetermined floor,
It is given to the personal computer 1 from the cable 6 through the electric power line 3, the 1st floor distribution board 2, and the electric power line 4, and the personal computer 1 uses commercially available energy measurement software based on the used electric power information and the used calorific value information. Energy consumption of the entire building is calculated.

As a result, it is possible to grasp the current state of energy usage and to confirm the effects of energy saving equipment and energy saving means.

Further, according to the illustrated example of the present invention, the electric power lines 3, 4, 8, 9,
10 can be used and the power lines 3, 4, 8 and
Since 9 and 10 can be existing lines, new wiring work is unnecessary. Further, since the power meter 14 is of a clamp type, it can be easily and quickly installed, and the calorie measuring detector 24
Radiation thermometers 21 and 22 and ultrasonic flowmeter 23
Does not need to be connected to the pipe 18 and can be placed near the pipe 18 for easy and quick installation.

Further, since LONWORKS is an open network, development of communication software is unnecessary and a commercially available network construction tool can be used.

From the above, in the energy measuring system of the illustrated example, the construction period can be shortened and the equipment cost can be reduced.

In the energy measuring system of the present invention, the case where the switchboard and the lighting are used as the power equipment and the power-using equipment and the cooling equipment is used as the heat energy-using equipment has been described, but it is limited to the switchboard, the lighting and the cooling equipment. Needless to say, various modifications may be made without departing from the scope of the present invention.

[0033]

As described above, the first aspect of the present invention is as described above.
According to the energy measurement system described in any of 1 to 7, the construction period can be shortened and the facility cost can be reduced, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an example of an embodiment of an energy measuring system of the present invention.

FIG. 2 is a schematic diagram of an example of a conventional energy measuring system.

[Explanation of symbols]

1 PC (means for calculating energy) 3 power lines 4 power lines 5 outlets 6 cables (open network) 8 power lines 9 power lines 10 power lines 11 outlets 12 outlets 13 Electric power equipment or / and electric power use equipment 14 electricity meter 15 cables (open network) 17 Cooling equipment (equipment using heat energy) 21 Radiation thermometer (thermometer) 22 Radiation thermometer (thermometer) 23 Ultrasonic flowmeter (flowmeter) 24 Calorimeter detector 25 cables (open network)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Isamu Suzuki             3-4-1 Yurakucho, Chiyoda-ku, Tokyo             Machine Industry Co., Ltd. F-term (reference) 2F056 YF06                 2F073 AA09 AA19 AA27 AA40 AB01                       AB06 BB08 BC01 CC01 DD02                       EE01 GG01                 5K046 AA03 BB05 CC05 PS17 YY01

Claims (7)

[Claims] 1. A power meter adapted to detect the electric power of an electric power facility or / and a device using electric power, and a calorimeter measuring detector adapted to detect the amount of heat used by a device using thermal energy.
An energy measuring system comprising: a communication line for transmitting the used power information detected by the power meter and the used heat amount information detected by the calorific value measurement detector to a means for calculating energy; Power line and L
An energy measurement system characterized by being configured by an ONWORKS open network. 2. The energy measuring system according to claim 1, wherein the communication line from the power meter to the outlet of the power line is configured by an open network of LONWORKS. 3. The energy measuring system according to claim 1, wherein a communication line from the calorific value measuring detector to the outlet of the electric power line is configured by an open network of LONWORKS. 4. The energy measuring system according to claim 1, 2 or 3, wherein the communication line from the means for calculating the energy to the outlet of the power line is constituted by an open network of LONWORKS. 5. A clamp type electric power meter,
The energy measuring system according to 2, 3, or 4. 6. The heat quantity measuring detector according to claim 1, 2, 3, 4 or 5, comprising a thermometer for detecting the temperature of the heat medium and a flow meter for detecting the flow rate of the heat medium. Energy measurement system. 7. The energy measuring system according to claim 6, wherein the thermometer is a radiation thermometer and the flowmeter is an ultrasonic flowmeter.