JP2010257611A - Energy load control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy load control system suitable for a personal space inexpensively, the control system being capable of contributing to energy saving by preventing a malfunction such that a person's absence is determined when the person rests for a fixed time without being affected by disturbance, and appropriately controlling the operation of lighting and air conditioning or the like immediately after the person leaves to appropriately reduce the energy load. <P>SOLUTION: The energy load control system includes: devices having unit sections obtained by dividing the inside of a room as a personal space as an energy load target area; a controller which controls energy loads of the devices; and a high-accuracy human body detecting sensor disposed in each unit section, the sensor having a detection range substantially corresponding to each unit section. An infrared detection part of the sensor is composed of a multi-element thermopile array capable of detecting the energy load target area, and an assembled infrared light collector, whereby the energy load of the personal space is accurately controlled by precisely determining a person's presence/absence. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an energy load for appropriately controlling an energy load such as air conditioning and lighting based on an output of a human body detection sensor for detecting a stay / absence / entrance / exit of a person in a large space such as an office, a hospital, or a museum. It relates to the control system.

  Conventionally, when the human body detection sensor detects that there is a human body, the first operation that is the operation control level that consumes predetermined energy is the operation control level of the control target device corresponding to the detection area of the human body detection sensor. While controlling to a control level (normal operation control level), the control target apparatus corresponding to the surrounding detection area consumes energy smaller than the predetermined energy (for example, energy of 50% of the first operation control level). An operation level control system that controls to a second operation control level (an operation level such as a standby mode) is known.

  In this operation level control system, for example, a plurality of illumination lamps composed of discharge lamps such as fluorescent lamps are arranged along the passage on the ceiling of a passage such as a corridor or an underground mall, and each illumination lamp is individually controlled to be turned on / off. A lighting control device has been proposed. This illumination control device normally controls each illumination lamp to be turned off, and performs control to turn on the corresponding illumination lamp for a certain time according to the passage of a person or an object moving on the passage (Patent Literature). 1).

  However, in this driving level control system, when the movement speed of the person is high, the control target device in the direction of movement of the person is not driven at the first driving control level (for example, the control target device is a lighting fixture). In this case, the traveling direction is dark), so convenience is not sufficient.

  In order to solve this problem, a predetermined detection corresponding to the output range of the control target device is set as one control target device having a configuration capable of switching a plurality of operation control levels having different maximum outputs. An operation level that receives an output from a human body detection sensor that detects the presence or absence of a human body in an area, and is connected to another control unit that controls all control target devices adjacent to the control target device. A first control unit that determines whether a control target device controlled by the control unit is in the advancing direction of the human body based on an output from the human body detection sensor and instruction information from another control unit. Control level instruction means and instructions to instruct operation at the operation control level with the highest maximum output when it is determined that the human body is in the direction of travel The control unit of the operating level and a control level selection means for outputting the control target device for control of the control unit the broadcast has been proposed (Patent Document 2).

However, since the human body detection sensor used in the two driving level control systems described above is a pyroelectric infrared sensor, only the presence / absence of a person's movement could be detected, and a stationary human body could not be detected. .
For this reason, since the detection signal is held for a certain period of time by the timer and simulated as a human body detection signal, even if a person stays in a stationary state after a predetermined period of time (the stationary state in FIG. 9). ), The absence state is determined (absence determination in FIG. 10), and for example, the illumination is turned off (control signal OFF in FIG. 10).
As described above, the human body detection signal is not synchronized with the stay / absence / entrance / exit state of the person in the area, and as a result, as shown in FIGS. Will cause a malfunction.

In addition, since the human body detection signal is output for a certain period of time after the person leaves (stay determination in FIG. 10), it is not possible to appropriately reduce the energy load by performing lighting or air conditioning operation even in the absence of the person. .
For these reasons, offices, hospitals, etc. have been used only for some toilets, but have not yet spread throughout the buildings of offices, hospitals, etc.

Therefore, in order to solve the above problems of the pyroelectric infrared sensor,
A temperature distribution detecting means in which a thermopile is arranged in a matrix in correspondence with each region in order to divide the living space into a plurality of regions and simultaneously detect the temperature of each region;
Storage means for storing temperature data corresponding to the number of areas detected by the temperature distribution detection means in association with a predetermined area of the divided areas;
Human body detection means for recognizing the presence or absence of a human body existing in the living space based on the temperature distribution detection result of the living space stored in the storage means;
Has been proposed (Patent Document 3).

  When detecting the presence / absence of a human body from a temperature signal detected by a thermopile infrared sensor, this human body detection device increases the number of pixels (temperature signal detection density for a detection target) as in a thermograph, and its image shape A method for discriminating the human body from the above is used.

  However, when this is applied to office offices, etc., the elements are closely arranged in a matrix, so a large number of thermopiles are required to detect a human body over a wide area using a human body detection device. And enormous costs.

  Therefore, in order to reduce the number of use of thermopiles, a human body detection device has been proposed in which an infrared detection means including a multi-eye thermopile sensor for detecting infrared rays in a room is scanned in the horizontal direction by a drive means (Patent Document 4). ).

However, this human body detection device was developed mainly for home air conditioners and is suitable for home appliances even if its life is not as long as the left, but it is suitable for long life in offices and hospitals. It is not suitable for long-term use in building air conditioning systems and lighting systems.
Therefore, it is not practical to employ a mechanism that is always driven in the office from the viewpoints of both life and maintenance of the human body detection device.

  Furthermore, in the case of a technique for discriminating a human body from a change in a temperature detection signal detected by a thermopile infrared sensor (Patent Document 5), a person does not stay for a long time such as an intruder detection application or a crime prevention application. It is assumed that the environment is free from disturbances and is not suitable for general purpose use.

As described above, since the thermopile infrared sensor has a small detection area, in order to monitor the entire wide area such as an office or a hospital, a mechanism for moving many sensors or automatically moving the sensor is required. It was necessary and it was difficult to adopt from the viewpoint of durability and cost.
For these reasons, human body detection devices have been used only in some places such as toilets and corridors in offices and hospitals, and have not yet spread to buildings such as offices and hospitals.

JP 2000-36392 A Japanese Patent No. 4151390 Japanese Patent No. 3805165 JP 2008-309379 A Japanese Patent No. 3451238

  The present invention was created to solve the various problems described above, and is not affected by disturbances such as solar radiation, residual heat of the human body, temperature changes of air conditioning, etc., and malfunctions that cause absence determination when a person is stationary for a certain period of time. An energy load control system suitable for personal spaces that can reduce energy load and contribute to energy saving by appropriately controlling lighting, air conditioning, etc. immediately after a person leaves. Is intended to be provided at low cost.

According to the first aspect of the present invention, there is provided a device that uses a unit section obtained by dividing a room as a personal space as an energy load target area, a controller that controls the energy load of the devices, and a detection that substantially corresponds to the unit section. In the energy load control system composed of a high-precision human body detection sensor arranged for each unit section, which is a range,
The high-precision human body detection sensor condenses the multi-element type thermopile array having three or more elements capable of detecting the energy load target area with a required accuracy and each of the plurality of elements. Infrared detector comprising: a plurality of unit infrared concentrators formed with a plurality of unit infrared condensing units in order to make it possible to detect the energy load target region almost without exception. A signal processing unit for processing an analog signal input from the detection unit, an arithmetic processing unit for performing data processing on the signal input from the signal processing unit to determine whether a person is present in the detection region, and It consists of an input / output unit that sends and receives information to and from the controller.
The controller comprises input / output means for transmitting / receiving information to / from the high-precision human body detection sensor, and arithmetic processing means for performing an arithmetic process on a signal from the high-precision human body detection sensor to control an energy load of the devices. And
Increase the output of the devices in the energy load target area that has received a signal that the person stays from the high-precision human body detection sensor, and output the devices in the energy load target area that have received the signal that the person does not stay Decreasing control was performed.

  According to a second aspect of the present invention, there is provided an integrated section in which the four high-precision human body detection sensors are integrated and integrated in four directions divided into four equal parts in the circumferential direction, and the four unit sections are integrated vertically and horizontally. It is characterized by being arranged in the center.

  According to a third aspect of the present invention, the controller includes a determination unit that determines whether or not a person stays in an area adjacent to the energy load target area where the person stays, and determines that the person does not stay in the adjacent area. In this case, the energy load of the devices in the area is reduced.

  According to a fourth aspect of the present invention, when the device is a lighting fixture, and the controller determines that a person does not stay in the energy load target region, the lighting fixture in the region is dimmed and the color temperature is lowered. It is characterized by doing so.

  The invention according to claim 5 uses the appliances as lighting fixtures, and the controller refers to an illuminance correction value table for illuminance by time zone and aged deterioration stored in a storage unit, and The illuminance is adjusted based on a human presence / absence signal from a high-precision human body detection sensor and a presence / absence signal of solar radiation.

  The invention according to claim 6 uses the equipment as an air conditioner, and the controller controls an air conditioning load based on human presence / absence information, number information, and presence / absence information of solar radiation from the high-precision human body detection sensor. It is characterized by doing so.

  In the invention according to claim 7, when the controller determines that the signal from the high-precision human body detection sensor is an OA device heat source and the detection temperature or the detection duration exceeds a predetermined value, the controller determines the energy load target region. It is characterized by issuing a specified alarm.

  The invention according to claim 8 is configured such that when the controller detects that a person stays in a time zone in which the high-precision human body detection sensor is set, the controller issues an alarm specifying the energy load target area. It is characterized by.

  The invention according to claim 9 is such that the controller determines that a fire has occurred when a detected temperature from the high-precision human body detection sensor exceeds a predetermined value, and issues an alarm specifying the energy load target area. It is characterized by that.

  The invention according to claim 10 is characterized in that the controller according to claims 8 to 9 lights up the lighting fixture in the energy load target area where a person stays.

According to the first aspect of the present invention, the energy load target area of the equipment is a unit section obtained by dividing the room into a personal space, while the high-precision human body detection sensor substantially corresponds to the unit section and its detection range. It is possible to finely control the energy load of equipment such as air conditioning and lighting based on the human body presence / absence signal of the high-precision human body detection sensor, resulting in excellent energy savings. It can be demonstrated.
In addition, the highly accurate human body detection sensor of the present invention can accurately detect the presence or absence of a human body without being affected by disturbances such as solar radiation, residual heat of the human body, and temperature changes of the air conditioning.

  According to the invention of claim 2, since the number of high-precision human body detection sensors can be reduced to 1/4, the sensor installation cost can be reduced, and maintenance work can be facilitated. it can.

  According to the invention according to claim 3, when it is determined that no person stays in the adjacent area, the energy load of the equipment in the area is reduced, so that the required operation of the equipment is ensured and the claim is made. The energy saving property of the invention according to item 1 can be further enhanced.

  According to the invention of claim 4, when the lighting controller determines that a person does not stay in the energy load target area, the lighting apparatus in the area is dimmed and the color temperature is lowered. While maintaining sex, it can give people a bright feeling.

According to the invention which concerns on Claim 5, since illumination intensity can be adjusted with reference to the illumination intensity table classified by time for every lighting fixture programmed and the illumination intensity correction value table of aged deterioration, fine illumination intensity adjustment can be performed.
In addition, the illuminance sensor is unnecessary, or the illuminance sensor installed in each of the four unit sections of the present embodiment can be reduced, and the installation cost of the illuminance sensor can be greatly reduced.

  According to the sixth aspect of the invention, the air conditioning controller controls the air conditioning load based on the presence / absence information of the person, the number of persons information, and the presence / absence information of the solar radiation from the high-precision human body detection sensor. Air conditioning can be controlled predictively while omitting.

According to the invention of claim 7, since it can be determined that the power of the OA device has not been turned off when absent, it is possible to alert the relevant person to this effect.
Thereby, while extending the lifetime of OA equipment, it can contribute to energy saving.

According to the invention according to claim 8, the fact that the high-precision human body detection sensor detects that a person stays in a set time zone such as a holiday means that an unscheduled person has entered. This means that at this time, a warning can be issued to the security officer informing that the intruder is in the specified unit zone.
At this time, even if the intruder attempts to escape, the miraculous movement of the intruder can be grasped for each unit section and can be easily tracked.

According to the ninth aspect of the present invention, it is possible to identify and notify the unit in charge of the fire occurrence place at the initial stage of fire occurrence to the security officer.
Security officers can take necessary measures such as initial fire fighting and contact with related departments to prevent fires.

According to the invention of claim 10, since the alarm according to any one of claims 8 to 9 is issued and the illumination of the place is turned on at the same time, the intrusion place or the fire occurrence place is visually confirmed at night. It is easy to grasp.
Especially for intruders, it is difficult to escape because the lighting of the unit section of the destination is turned on.

FIG. 1 is an image diagram when the energy load of the present invention is office lighting. (A) is an image figure which shows the aspect which only turns on ambient lighting at the time of absence, and (b) is the image figure which shows the aspect which lights both ambient lighting and task lighting. FIG. 2 is a bird's eye view showing a unit section of the floor detection area of one human body detection sensor, in which one high-precision human body detection sensor of the present invention is attached to the ceiling per 1800 mm square. This unit section corresponds to the energy load range of the equipment. FIG. 3 is an enlarged view of the unit section of FIG. 2, and is a detection area overview diagram showing that the unit section of the high-precision human body detection sensor of the present invention is divided into six detection areas. FIG. 4 is a ceiling plan view showing an aspect in which one high-precision human body detection sensor, ambient lighting fixture, and air-conditioning air outlet are attached per 1800 mm square. FIG. 5 is a configuration diagram of the energy load control system of the present invention. FIG. 6 is an explanatory diagram showing an example of adjacent control of the lighting control system of the present invention. FIG. 7 is a drawing-substituting photograph showing the high-precision human body detection sensor of the present invention. FIG. 8 is a functional block diagram of the high-precision human body detection sensor of the present invention. FIG. 9 is a detection function diagram of the pyroelectric human body detection sensor. FIG. 10 is a diagram illustrating the relationship between the sensor detection value of the pyroelectric human body detection sensor and the control signal. FIG. 11 is a detection function diagram of the high-precision human body detection sensor of the present invention. FIG. 12 is a diagram showing the relationship between the sensor detection value and the control signal of the high-precision human body detection sensor of the present invention. FIG. 13 is a state transition diagram showing a state transition between an absent state, an approach state, a stay state, a human body motion detection state, and a leaving state. FIG. 14 is a flowchart showing a procedure from the absence state to the entry state. FIG. 15 is a flowchart showing a procedure from the entry state to the stay state or the absence state. FIG. 16 is a flowchart illustrating a procedure from the stay state to the transition to the human body motion detection state. FIG. 17 is a flowchart showing a procedure from the transition from the human body motion detection state to the leaving state or the staying state. FIG. 18 is a flowchart illustrating a procedure from the leaving state to the transition to the absent state or the staying state.

A present Example is an energy load control system which makes the output of a lighting fixture and an air conditioner an example of an energy load.
In the present embodiment, the room is divided into 1800 mm squares as personal spaces, and the divided sections are used as the target areas of the energy load of the lighting apparatus and the air conditioner.
Therefore, as shown in FIG. 3, in this energy load control system, the detection range of the high-precision human body detection sensor is matched with the target area of the energy load so as to correspond to the unit area divided into the compartments. It is supposed to monitor whether or not a person is present.
In other words, using a thermopile that could only monitor 300 mm square in the past, the presence of a person is accurately detected in a considerably wide area of 1800 mm square.

As shown in FIG. 5, the present system includes an apparatus composed of an air conditioner and a lighting fixture in which the unit section is an energy load target area, an air conditioning controller and a lighting controller that control the energy load of the apparatuses, It is composed of a high-precision human body detection sensor arranged for each unit section, and an illuminance sensor that uses the four unit sections as a collection section.
In addition, when performing the adjacent control of the energy load to be described later in a place where the unit section of the floor exceeds a predetermined number (64 unit sections in the present embodiment), a floor controller higher than the air conditioning controller and the lighting controller is provided. .

FIG. 4 shows a ceiling plan. From this figure, it can be understood that one air-conditioning air outlet and one ambient lighting fixture are arranged for each unit section.
This system aims to contribute to energy conservation by accurately reducing the operating energy load of personal air conditioning and personal lighting while ensuring safety without impairing comfort.

Since the human body detection sensor of the conventional energy load control system uses the pyroelectric human body detection sensor as an elemental technology, it cannot be applied to places where human bodies are stationary such as offices and hospitals. It is.
Therefore, in the present invention, the accuracy of the human body detection sensor is remarkably improved, and the human body detection sensor which is a premise for accurately controlling the energy load in the building that has not been applied so far has been improved. One characteristic is that a human body detection sensor is used.

  Therefore, hereinafter, in order to facilitate understanding of the energy load control system of the present invention, first, a high-precision human body detection sensor which is the element technology will be described, and then the entire energy load control system will be described.

With reference to FIG. 8, the system configuration | structure of the Example of the highly accurate human body detection sensor of this invention and its function are demonstrated.
≪Configuration of high-precision human body detection sensor≫
This high-precision human body detection sensor is composed of a multi-surface reflecting mirror or multi-surface lens composed of two or more surfaces and a thermopile array composed of three or more elements, a dust-proof cover and the surface temperature of the housing, or the location of the sensor. A temperature sensor for correction that measures the ambient air temperature, a signal processing unit that processes these analog signals, and a human body detection signal and heat source identification signal (OA equipment) through data analysis using the human body detection algorithm that captures the processed signal A calculation processing unit (CPU) for calculating information such as a determination signal, and an input / output unit for transmitting / receiving information to / from an external device.

Referring to FIGS. 3 and 7, the infrared detection unit of the present embodiment is composed of six-element thermopile array circle numbers 1 to 6 and six-surface reflecting mirrors A to F.
The surfaces A to F of the six-surface reflecting mirror correspond to the six unit detection target areas in the zones A to F shown in FIG. 3, and each of the six elements is included in each surface A to F of the reflecting mirror. On the other hand, it has a mirror surface that collects infrared rays.
That is, the unit section of the present embodiment is divided into six unit detection target areas of zones A to F. Thereby, the detection target area of the human body detection sensor is widened and the detection accuracy is enhanced.
Therefore, although detection signals are input from the six unit detection target areas A to F to each element, the sum of the detection signals from the six unit detection target areas is used as a detection signal for each element thermopile array.
Note that the output level of the detection signal decreases as the temperature increases and the amount of infrared rays increases.
In the present embodiment, the light collector is configured by a six-surface reflecting mirror, but may be configured by a lens that focuses light on six elements.

As shown in FIG. 3, the elements corresponding to the unit detection target areas A to F are composed of two sets of six elements, circle numbers 1 to 3 and circle numbers 4 to 6, and each set of elements. Is composed of the central main element round numbers 2, 5 and the subelement round numbers 1, 3, 4 and 6 on both sides.
In this way, one set of three elements, with the center as the main element and both sides as the sub elements, the element located at the center is highly sensitive, and as can be understood from FIG. This is because the temperature information signal of other areas other than the monitoring area is hardly received.
Therefore, the present invention requires at least three elements.
And when adding this, since 3 elements are performed as 1 set, the element of the multiple of 3 will be provided.
In this embodiment, this means that two sets of elements are provided.
Note that the number of elements in each set need not be an odd number, and can be an even number. In this case, the average of the detection values of the two elements on the center side may be used as the detection value of the main element.

The signal processing unit filters the signal detected by each element of the thermopile array with a hardware filter, receives the signal from the temperature sensor for correction shown in FIG. 8, corrects the detected value of each element, and outputs the output level. It is intended to adjust.
The processing for receiving the signal from the correction temperature sensor and correcting the detection value of each element can also be executed in the arithmetic processing unit.
Therefore, in the following, it is described that correction processing is performed in the arithmetic processing unit.

And the detection signal from a sensor and the signal from the temperature sensor for correction | amendment are input into the said arithmetic processing part (CPU), and the parameter calculated in an arithmetic processing part is as follows.
・ Fluctuation amount per unit time of detection value of each element, that is, slope of detection value ・ Increase / decrease (increase / decrease) in detection value of each element
-Amount of change in the detected value of each element-An element in which the detected value changes (classification of main element or sub-element)
-Number of elements in which the detected value changes-Difference in detection value change start time between each element-Difference in detected value change between each element-Difference in detected value between each element (for example, element 1) And difference between elements 3)

In addition, what is calculated by the CPU and stored in a storage unit (not shown) and used to determine the current state of each detection area is as follows.
・ Absence base value ・ Detected value before human body movement ・ Correction judgment value ・ Human body detected value (used to detect the approximate number of people or one / multiple)
・ Estimated number of people (approximate number or one / multiple detection)
-Residual heat judgment value (used to exclude the effects of residual heat remaining after the human body leaves)

≪High-precision human body detection sensor function≫
As shown in FIGS. 11 and 12, the high-accuracy human body detection sensor of the present invention can not only detect an approaching state and a leaving state, but can also continue to detect a stationary staying state.
As a result, it can be determined that the person is staying even if the person does not move at all for a long time in the detection area and remains completely stationary.
And this high-precision human body detection sensor is affected by temperature change in a short time (several minutes to several tens of minutes) due to air conditioning control, etc., and temperature change in the external environment and the entire area for a long time (1 to several hours). Remove the effects of solar radiation in the perimeter zone.
For this reason, it is possible to distinguish between the human body and other heat sources such as PC (personal computer), copier, and fax machines, and to distinguish between the human body and the remaining heat of the human body remaining on a chair or desk, etc. / Determination status and human body motion detection status, can detect a stationary human body over a long period of time and detect a completely stationary human body, know whether one or more people stay in the detection area, The human body can be detected in a non-steady state when the temperature is lower than the floor surface temperature.

  As shown in FIG. 13, the wide-area human body detection sensor of the present invention is characterized by a state transition between an absent state / an approach state / a stay state / a human body motion detection state / a leaving state.

Here, the meaning of each state and the mode of transition from each state will be described.
The absence state means a state in which no human body exists in the detection area, and shifts from the leaving state to the entering state.
The entry state means a state in which a human body has entered the detection area from the absence state, and shifts from the absence state to the stay state or absence state.
The staying state means a state in which a human body stays in the detection area and is stationary or does not move greatly. The staying state shifts from the entry state / withdrawal state / human body motion detection state to the human body motion detection state.
The human body motion detection state means a state in which the human body is in the staying state and is moving, and shifts from the staying state to a leaving state or a staying state.
The leaving state means a state in which the human body that has been in the staying state has left the detection area, and shifts from the human body motion detection state to the staying state or the absence state.

As can be understood from the state transition mode described above, there is no direct state transition from the stay state to the absent state.
In order to make a state transition from the staying state to the absent state, as shown in FIG. 13, the state transition is determined for the first time through the state transition of the human body motion detection state and the leaving state.
For this reason, even if the person continues in a completely stationary state where the person does not move at all for a long time in the detection area, it can be determined that he / she is staying, in other words, not being absent.
In this respect, if the pyroelectric infrared sensor is stationary for a certain period of time, it is remarkably different from one in which the stay state cannot be determined, and no erroneous determination is made.

Hereinafter, the human body state determination method as a basic algorithm will be described for each state transition mode.
In this state transition main routine, the absent state is the basic state (initial state), and when the state transitions to the absent state, the routine up to that point is temporarily terminated, returning to the beginning of FIG. Cycle through an infinite loop until the value change criterion is met.
Thereafter, when the human body enters again, the value in the absence state immediately before the transition to the entry state is set as a reference value used for each determination.
In the following, it is divided for convenience of explanation, but it should be understood that the actual routine is continuous.

<Transition from absence to entry state (transition)>
Referring to FIG. 14, in the absence state, the CPU satisfies each determination criterion (change is greater than or equal to the threshold value), and each parameter continuously satisfies the determination criterion even after waiting for a certain period of time. If it is determined that the detected value of each parameter in the absence state is stored in the storage unit, the state shifts from the absence state to the entry state.
The parameters used here are the amount of change in the detected value, the element where the change is observed (main element and sub-element), the number of elements where the change is observed, the difference in the change start time between each element, and the difference between each element There are five differences in the amount of change.

<Transition from the entry state to the stay state / absence state (transition)>
As shown in FIG. 15, after the thermopile detection signal is stabilized (the change is within the threshold), the CPU compares the detected value in the absence state read from the storage unit of each parameter with the current detected value. When it is determined that the difference is within the threshold value (judgment reference value), the value of each parameter stored in the storage unit is cleared to the absence state, and is equal to or greater than the threshold value. When it is determined, it shifts to a staying state.

  In this way, when a person once enters the detection area and immediately leaves, the pyroelectric infrared sensor imitates the time stay state set by the timer and continues to illuminate, for example. According to the high-precision human body detection sensor, it is possible to immediately determine the absence state and reduce the loads such as lighting and air conditioning of the energy load control system of the present invention, thereby contributing to energy saving.

<Transition from stay state to human body motion detection state (transition)>
Referring to FIG. 16, in the staying state, when the CPU determines that the amount of change in the detected value of each parameter is equal to or greater than the threshold value, the CPU holds the value of each parameter before the change in the storage unit. Transition to the motion detection state.
On the other hand, when it is determined that the amount of change in the detected value of each parameter is less than or equal to the threshold value in the stay state, the CPU determines whether there is an environmental change effect and whether there is an influence from another heat source. If it is determined that there is an environmental change or the influence of other heat sources, a heat source other than a person is detected and the correction judgment value of each parameter is corrected, and the correction judgment value held in the storage unit is Rewrite and return to the stay state.
That is, when there is no change in the detected value of each parameter in the staying state, it circulates through an infinite loop and does not shift to the human body motion detection state, and hence to the absence state described later.
Therefore, although the person is staying, there is no malfunction that the person is absent.

<Transition from human body motion detection state to stay state / exit state (transition)>
Referring to FIG. 17, after determining that the thermopile detection signal is stable (the change is within a threshold value), the CPU determines the value of each parameter read from the storage unit and the current detection value before detecting the human body motion. In comparison, when it is determined that the detected value has increased by a threshold value (judgment reference value) or more, the assumed number of persons is decreased and the process shifts to the leaving state.
When it is determined that the detected value has decreased by more than the threshold value, the assumed number of persons is increased. The assumed number of people will be described in detail later.
In this case, the determination reference value (threshold value) of each parameter is corrected and the state transitions to the stay state, as in the case where it is determined that none of them applies.
Here, it can be understood from FIG. 16 and FIG. 17 that a large infinite loop is formed that transitions from the staying state to the human body motion detection state and returns to the staying state again.

  Even if the CPU shifts from the staying state to the human body motion detection state, it does not shift to the retreating state as long as it does not determine that the detected value has increased beyond the threshold value, so the staying person stays without moving It can return to the state and maintain that state. In this respect, it is greatly different from the conventional pyroelectric human body detection sensor.

<Transition from the leaving state to the staying state / absent state (transition)>
Referring to FIG. 18, the present embodiment is a method for determining whether to move from the staying state to the staying state or the absence state, and includes the following three procedures.
The first procedure is to determine whether or not the difference between the determination reference value in the absence of each parameter read from the storage unit or the corrected determination value obtained by correcting the value and the current detection value is within a threshold value. , Whether each parameter has returned to the value in the absence state,
The second procedure is to determine whether or not the detected value of each parameter satisfies criteria such as the assumed number of people and the difference in the detected value between the elements,
The third procedure is whether there is residual heat from a chair or desk,
Are determined in order, and when it is determined that the exit determination condition of these procedures is satisfied, the storage of each parameter is canceled and the absence state is entered.

  In addition, the CPU determines all of the above-described exit determination conditions. If none of the conditions is satisfied, the CPU determines whether the change in each parameter is equal to or greater than a threshold value. When the determination is made, the assumed number of people is decreased, and when it is determined that the number is equal to or less, the determination reference value of each parameter is corrected without changing the assumed number of people and the state is shifted to the stay state.

≪High-precision human body detection technique≫
As described above, the state determination method of the human body has been described for each state transition mode. However, if the wide-area, high-precision human body detection sensor of the present invention is incorporated into an actual building air conditioning control or lighting control system, the human body It is conceivable that the detection accuracy is insufficient.
Therefore, the present invention provides a method for improving the accuracy of human body detection described below in order to further improve the accuracy of human body detection.
There are the following three techniques for improving the accuracy of human body detection.

The first high accuracy method measures the surface temperature of the dust-proof cover and housing of the human body detection sensor or the air temperature around the sensor installation location by the above-described correction temperature sensor, and the information is subjected to the above signal processing. This is to prevent the influence of temperature change due to air conditioning control or the like by inputting to the CPU via the unit and causing the CPU to correct the thermopile detection value.
This high accuracy method can be applied to exclude the influence of temperature change in a short time (several minutes to several tens of minutes) due to air conditioning control or the like.
A specific application example will be described later.

  The second high-accuracy technique allows the CPU to remove or require the influence of temperature change due to air conditioning control or the like by filtering the sensor detection value with a high-pass filter having an appropriate cutoff frequency and filter order. To extract information.

This high accuracy technique can be applied to various events.
That is, if the cutoff frequency and filter order of the high-pass filter are set according to the target to be removed or extracted and filtered, various influences can be removed or target information can be extracted. .
For example, the influence factors that can be removed include the effect of temperature change in a short time (several minutes to several tens of minutes) due to air conditioning control, etc., and the temperature change in a long time (1 to several hours) due to air conditioning control, etc. There are influences, the influence of other heat sources such as PC / copy / fax office automation equipment and humidifiers, and the residual heat of the human body remaining on chairs and desks.
In addition, information extracted in this embodiment includes entry / exit information.
A specific application example will be described later.

The third high accuracy method is a method for analyzing the parameters of each element of the thermopile array, and it is a large analysis method when a change occurs in all elements and an analysis method when a change occurs in some elements. Separated.
A specific application example will be described later.

≪Example of application of high precision method≫
In the present embodiment, a high accuracy technique is applied for the next information processing.
(1) Excluding the effects of temperature changes in a short time (several minutes to several tens of minutes) due to air conditioning control, etc.
(2) Excluding the effects of temperature changes over a long period (1 to several hours) in the external environment or the entire area,
(3) Exclusion of solar radiation effects in the perimeter zone,
(4) Knowing the number of people staying in the surveillance area (one / multiple),
(5) Discrimination from other heat sources (OA equipment: PC, copy, FAX, humidifier, etc.)
(6) Recognizing the remaining heat of the human body remaining on a chair or desk, and
(7) Non-stationary human body detection, such as during extreme heat and severe winter, when the human body temperature is different from normal (when human body temperature <ambient temperature / floor temperature)
Hereinafter, an algorithm for each technical item will be described.

<Exclusion of effects of temperature changes in a short time>
In order to exclude the influence of the temperature change in a short time, the first to third high accuracy techniques described above were applied.
First, the correction temperature sensor measures the surface temperature of the dust-proof cover of the sensor and the housing, or the air temperature around the sensor installation location, and inputs the information to the CPU via the signal processing unit. Then, by causing the CPU to correct the thermopile detection value, there is no influence of temperature change in a short time (several minutes to several tens of minutes) due to air conditioning control or the like.

  Second, by letting the CPU filter the sensor detection value with a high-pass filter with an appropriate cutoff frequency and filter order corresponding to temperature changes in a short time, a short time (several minutes to several tens of minutes) by air conditioning control, etc. The effect of temperature change in units) is removed.

The third method is an analysis method when all elements are changed in the third high accuracy method.
When the CPU determines that the amount of change per unit time of all the elements of the six-element thermopile array is the same, it can be regarded as an influence due to an environmental change.
Therefore, by causing the CPU to calculate and monitor the difference between the elements, the influence of the temperature change in a short time (several minutes to several tens of minutes) due to air conditioning control or the like is prevented.

<Exclusion of long-term temperature change>
The sensor change value is filtered by the CPU with a high-pass filter with an appropriate cutoff frequency and filter order corresponding to the temperature change over a long period of time, so that the temperature change over a long period of time (1 to several hours) due to air conditioning control, etc. Remove the effects of.

<Exclusion of the effects of solar radiation>
When changes in the detected values due to temperature rise due to solar radiation on the floor surface and sensor body (dust-proof cover / housing) in the perimeter zone appear in all elements, the effect of solar radiation is the same as described in paragraph 0060. This prevents the malfunction that is detected when a person stays due to the temperature rise caused by solar radiation.

On the other hand, when the difference between the elements is calculated, an event (change in the detected value) that occurs in the same manner in both elements is canceled, and an event (change in the detected value) that occurs only in one of the elements can be captured.
Therefore, when the influence of solar radiation is observed on a plurality of elements (5 to 2 elements) that are not all of the six elements of the present embodiment, the difference between the elements of the sub elements is calculated and there is no difference. Since the influence can be eliminated by excluding the change, it is prevented that a person stays due to a temperature rise due to solar radiation.
This corresponds to an analysis method when a change occurs in some elements in the third high accuracy method.

  Also, the probability of sensor placement is assumed to be very low, but if only one element is affected by solar radiation, the slope of the sensor output from the human body should be greater than the slope of the sensor output due to the influence of solar radiation. From the difference between the inclination of the sensor output value when the surface temperature of the floor or desk changes due to the influence of solar radiation and the inclination of the sensor output value when the human body enters, it can be determined whether the human body or solar radiation.

  In any case, only the human body is discriminated by causing the CPU to calculate and monitor the difference or inclination of the detection value of each element, thereby eliminating the influence of solar radiation.

<Understanding the number of people staying in the monitoring area (single / multiple)>
There are two methods for grasping the number of people staying in the monitoring area.
One is to cause the CPU to filter the sensor detection value with a high-pass filter having an appropriate cutoff frequency and filter order corresponding to entry / exit.
Thereby, the entry information and the exit information are extracted, and the number of times is counted to detect whether the number of people in the area is one, or one or more.
The detected number of persons is stored as a human body detection value in the storage unit.

Second, by letting the CPU classify the detected value of each parameter based on a threshold value as to whether it is one or a plurality of persons, it is assumed that a rough number of persons or one / a plurality of persons in the area are calculated.
The CPU stores the estimated number of persons in the storage unit as the assumed number of persons.

The two methods of grasping the number of people staying in the monitoring area described above constitute the number of people assumption means of the present invention.
This subroutine for grasping the number of visitors is incorporated in an appropriate part of the state transition routine for transitioning between the states described above.
Then, when the CPU detects the human body detection value and / or the assumed number of people, the CPU outputs it to the outside from the input / output unit.

<Distinction from other heat sources>
This is a method for distinguishing other heat sources such as PC, copy, FAX and other heat sources such as humidifiers from short- and long-term temperature changes and solar radiation by the air conditioning control described above.
Short- and long-term temperature changes due to air-conditioning control, etc., and temperature changes due to solar radiation change the detection values of all elements in the thermopile, while office equipment such as PCs, copy machines, and fax machines are installed throughout the target area. Since this is rarely performed, the detection values of some elements are changed.
Therefore, when a change appears in the detection values of some elements, it can be determined that the influence is due to other heat sources such as OA equipment.

One of the methods is that the CPU calculates a difference in detection value change start time between elements (whether or not they are simultaneous) or a difference in detection value change amount between elements (whether or not the changes are the same). If it is within the threshold value, it is judged as the influence of the environmental change.
In addition, since the inclination of the sensor output based on the influence of the human body is larger than the inclination of the sensor output based on the influence of other heat sources, the difference between the inclinations of the sensor output values of the two causes the human body or another heat source such as OA equipment. Is determined.
When it is determined that there is an environmental change effect or another heat source effect, the determination value of each parameter is corrected.
These determination results may be output from the input / output unit to the air conditioning control unit and reflected in the air conditioning control.

The second is to let the CPU filter the sensor detection value with a high-pass filter having an appropriate cutoff frequency and filter order corresponding to another heat source.
Thereby, other heat source information is removed, or the delay time until it discriminate | determines from a human body is shortened.

<Determination of the residual heat of the human body>
This is a technique for discriminating the residual heat of the human body remaining on a chair or desk, but there are two techniques.
One is to eliminate the influence of the residual heat of the human body remaining on the chair or desk by causing the CPU to filter the sensor detection value with a high-pass filter having an appropriate cutoff frequency and filter order corresponding to the residual heat of the human body.
As another method, the CPU calculates and monitors the difference between the elements to determine that the heat is not the human body, or shortens the delay time until it is determined that the heat is not the human body, Determine the absence of a person.

<Human body detection during non-stationary>
This is a technique for detecting a human body in a non-stationary state where the human body temperature is lower than the ambient temperature and the floor temperature.
In the normal routine of this embodiment, it is created on the assumption that the human body temperature is higher than the ambient temperature and the floor temperature.
However, it is assumed that the human body temperature is different from the normal time when the human body temperature is higher than the ambient temperature and the floor surface temperature, such as in the extremely hot season and the severe winter season.
In such a case, the sensor detection value is filtered by an appropriate constant / order (high-pass filter) to extract the entry / exit information, and the number of times is counted to determine the approximate number of people. Detects the human body at all times.
Alternatively, as another method, by causing the CPU to calculate and monitor the difference between the elements, the human body in the non-stationary state is detected or the delay time until the non-stationary human body is detected is reduced, and / Confirm the absence state.

The configuration and functions of the above high-accuracy human body detection sensor can be summarized as the following embodiments.
Embodiment 1 includes an infrared detection unit, a signal processing unit for processing an analog signal input from the infrared detection unit, and a person in the detection area by processing the signal input from the signal processing unit In the wide-area / high-precision human body detection sensor configured with an arithmetic processing unit that determines whether or not to perform and an input / output unit that transmits and receives information to and from an external device, the infrared detection unit has a unit detection target area as a required area. A unit infrared condensing body in which a multi-element type thermopile array having three or more elements that can be detected with high accuracy and a condensing part that condenses light on each of the plurality of elements is formed. This is an aspect in which a plurality of target infrared areas are integrally provided so that the entire target area including a plurality of target areas can be detected almost without exception.

According to the first aspect of the present invention, it is possible to prevent the occurrence of a malfunction that makes an absence determination that a person is not present even if the person is stationary for a long time in the detection area. Can be possible.
In addition, immediately after leaving the human detection area, it is possible to appropriately control the transmission of lighting, air conditioning, etc., and to appropriately reduce the power load, thereby contributing to energy saving.
Furthermore, since this wide-area, high-precision human body detection sensor does not have a drive unit, it has durability suitable for long-term use in air-conditioning systems and lighting systems for long-life buildings such as offices and hospitals.
Furthermore, the detection area is broadened so that a relatively small unit detection target area can be detected by a plurality of elements and the entire target area consisting of a plurality of unit target areas can be detected without fail while maintaining high accuracy. In addition, the sensor can be miniaturized and provided at low cost.

  The second aspect of the embodiment is a mode in which the arithmetic processing unit is subjected to state transition among the absence state, the approach state, the stay state, the human body motion detection state, and the leaving state.

  In the aspect 3 of the embodiment, when the operation processing unit determines that the person stays in the completely stationary state where the person does not move at all in the detection area for a long time in the stay state, the operation processing unit remains in the stay state and enters another state. This is a mode in which no transition occurs.

  A fourth aspect of the embodiment is a mode in which the arithmetic processing unit does not transition to the absent state unless it has transitioned from the staying state to the human body motion detection state and then to the leaving state.

  The fifth aspect of the embodiment is a procedure for transitioning the arithmetic processing unit from the human body motion detection state to the withdrawal state during the transition state from the stay state to the human body motion detection state in the stay state procedure. Among them, any of the procedures for transitioning from the leaving state to the absent state constitutes an infinite loop that returns to the starting point of the staying state, and circulates through any of the infinite loops, whereby the absent state This is a mode in which no transition is made.

According to 2 to 5 of the embodiment, since the state transition is performed between the absence state, the approach state, the stay state, the human body motion detection state, and the leaving state, the entering state and the leaving state are clearly distinguished. Therefore, it cannot transition to the absent state unless it has gone through the leaving state.
In other words, the absence determination is not performed unless it is detected that the person has moved out, so that a malfunction that does not exist is not caused although a person is staying, unlike a conventional human body detection sensor.

  Embodiment 6 includes a number assumption means for assuming the number of people who stay in the arithmetic processing unit, and when transitioning from the human body motion detection state to the withdrawal state, the assumed number of people is decreased, and the human body motion detection state When transitioning to the staying state, the assumed number of people is increased.

  According to this embodiment, since it is possible to assume the approximate number of people staying in the detection area, this assumption result can be applied to control of the air conditioning load.

  In Embodiment 7 of the present invention, when the arithmetic processing unit determines that the human body temperature is lower than the ambient temperature / floor temperature, it continuously extracts the entry information and the exit information, and counts the number of times. This is a mode in which a human body in a non-stationary state is detected by grasping the above or calculating / monitoring a difference in detection value between each element.

  According to this embodiment, the number of times of entering / leaving is counted to grasp the approximate number of people, or the difference in the detected value between each element is calculated and monitored to detect the human body in the non-steady state. Therefore, even when the human body temperature is lower than the ambient temperature of the sensor or the floor surface temperature of the detection area, the human body can be detected.

  The embodiment 8 further includes a correction temperature sensor that measures either the surface temperature of the sensor itself or the air temperature around the sensor, and the signal processing unit or the arithmetic processing unit receives the input detection signal. In this aspect, the correction is performed based on the correction detection signal and is not affected by the room temperature.

  According to this embodiment, since the correction temperature sensor is further provided and the input detection signal is corrected based on the correction detection signal, the accuracy of human body detection that is not affected by the indoor temperature is improved. Can be planned.

  In the embodiment 9, the arithmetic processing unit, the detection value of each element of the infrared detection unit, the fluctuation amount per unit time of the detection value of each element, increase / decrease of the detection value, change amount of the detection value, detection Analyze parameters such as the number of elements that change in value, the number of elements that change in detection value, the difference in detection value change start time, the amount of change between elements, and the difference in detection value between elements Thus, a heat source other than a person is detected, or an influence of a temperature change derived from a person other than the person is removed.

According to this embodiment, it is possible to accurately remove the influence of temperature changes caused by any heat source derived from a person other than a person, and to improve the accuracy of human body detection.
In addition, when a heat source is detected, it is possible to specify whether the influencing factor for temperature change is the temperature change of the entire indoor environment due to air conditioning, solar radiation, OA equipment, or the residual heat of the human body. Independently of this, the presence / absence information of a person can be acquired.
Therefore, these data processing results can be utilized for air conditioning and lighting control, and appropriate operation control can be performed to contribute to energy saving.

  According to the tenth aspect of the present invention, the calculation processing unit filters the detection value of the infrared detection unit with a high-pass filter having an appropriate cutoff frequency and filter order, thereby removing the influence of a temperature change derived from other than a person. Alternatively, it is a mode of extracting necessary information.

According to this embodiment, it is possible to accurately remove the influence of temperature changes caused by any heat source derived from a person other than a person, and to improve the accuracy of human body detection.
In addition, the entry / exit information can be extracted to roughly determine the number of people, one person, or a plurality of persons.

Next, the example which applied the energy load control system of this invention to the air-conditioning and illumination control system shown in FIGS. 1-6 is demonstrated.
≪Air conditioning and lighting control system≫
The air conditioning / lighting control system of the present embodiment realizes a personal space by dividing the room into 1800 mm squares.
The personal space is set as an output range of personal air conditioning and personal lighting, and the range is set as an energy load target area as a unit section of the air conditioner and the lighting fixture.
The above-described high-precision human body detection sensor is arranged for each unit section.
In the actual layout, the high-accuracy human body detection sensor is integrated in four directions that are assembled and divided into four equal parts in the circumferential direction (see FIG. 5), and as shown in FIG. It is arranged at the center of the stacking section in which the four unit sections surrounded by four corners are stacked.

The controller includes input / output means for transmitting / receiving information to / from the high-precision human body detection sensor, and arithmetic processing means for calculating the signal from the high-precision human body detection sensor and controlling the energy load of the devices. .
The controller that controls the air conditioner and the lighting fixture is configured such that the lighting controller and the air conditioning controller are independent.
The output of the high-precision human body detection sensor is input to the input / output means of the lighting controller, is processed by the CPU, and the output of the lighting fixture is controlled to adjust the light.
The lighting fixture may be ambient lighting or task-and-ambient lighting.
In any lighting fixture, when a person stays in the sensor detection range, the presence signal output from the sensor is received to increase the illuminance, and when no person stays in the sensor detection range, The absence signal output from the sensor is received to reduce the illuminance.

On the other hand, the air conditioning controller receives the presence / absence signal via the lighting controller, and the CPU receives the presence signal output from the sensor when a person stays in the sensor detection range, like the lighting controller. When the air volume is increased and a person is not staying in the sensor detection range, the person absence signal output from the sensor is received and the air volume is decreased.
Of course, the air conditioning intensity of the air conditioner body may be directly controlled.

In this embodiment, the signal from the high-precision human body detection sensor is received by the lighting controller, and the raw signal is transmitted to the air conditioning controller without processing the received signal, but the order is reversed. There is no problem.
Both controllers of this embodiment can be connected to a maximum of 64 high-precision human body detection sensors.
At this time, a floor controller is arranged, and this floor controller controls lighting and air conditioning of the entire floor.

Here, when there is a means for determining whether or not a person stays in an area adjacent to the energy load target area where the person stays, and it is determined that no person stays in the adjacent area, the energy load of the equipment in the area An embodiment of an adjacent energy load control system (hereinafter referred to as “adjacent control”) for reducing the above will be described.
Referring to FIG. 6, when the CPU of the floor controller determines that a person stays, the illuminance of the unit section is set to the first lighting level 800 lx, and the air conditioning is adjusted to the first air volume level and then stored. All the unit sections are stored in the means. In this embodiment, J-3 and L-5 are stored as the person unit block.
The CPU reads out the person unit block J-3 from the storage means, and confirms that the unit block of J +/- 1 and the circled number 3 +/- 1 is not stored as the person unit block. The unit section is set to the second illumination level 400 lx, while the air conditioning is adjusted to the second air volume level.
Next, it is confirmed that the unit block of L +/- 1 and the circled number 5 +/- 1 is not stored as a human unit block, and the unit block is set to the third illumination level 200lx, Adjust the air conditioning to the third air volume level.

In this embodiment, since the unit section is set to 25, all the lamps are illuminated. However, when the unit section has a large space of several hundreds, the above processes of +/- 2 and then +/- 3 are repeated. The fourth lighting / air conditioning level with zero energy load may be adjusted. In this way, energy saving can be further promoted.
In addition, an address is assigned to each unit partition, and a table storing addresses adjacent to the address for each address is created, and this unit is referred to for a unit partition where a person stays, and adjacent to the unit partition. It is good also as confirming the presence or absence of the person of the division to perform.

The illumination controller described above merely adjusts the illuminance. However, when the illuminance is reduced, the color temperature may be lowered so as not to give a dark feeling.
The air conditioning controller may control the air conditioning load based on the presence / absence information of the person, the number of persons information, and the presence / absence information of the solar radiation from the high-precision human body detection sensor.

The lighting controller stores the illuminance table for each time zone for each lighting fixture and the illuminance correction value table for aging deterioration in the storage means, and refers to the illuminance table for each lighting zone for each lighting fixture and the illuminance correction value table for aging degradation. In addition, the illuminance may be adjusted based on the presence / absence signal of the person and the presence / absence signal of solar radiation from the high-precision human body detection sensor.
When executing this illumination control, the illuminance sensor is unnecessary, or the illuminance sensor installed in each of the four unit sections of the present embodiment can be reduced, greatly increasing the installation cost of the illuminance sensor. You can save.

In the present embodiment, the illuminance sensor is disposed at the center position of the set unit section surrounded by four corners in which four unit sections are assembled as shown in FIG.
When the lighting controller determines that a person is staying in all the four unit sections, the conventionally known illuminance constant control may be preferentially performed with the illuminance of the collective section as the representative illuminance.

Either the lighting controller or the air conditioning controller described above generates an alarm specifying the unit section when it is determined that the signal from the high-precision human body detection sensor is an OA device heat source and the detection temperature or detection duration exceeds a predetermined value. Can be emitted.
As described above, since the high-precision human body detection sensor of the present invention has a function of recognizing that the heating element is an OA device, when the detected temperature exceeds a threshold value, an abnormality of the OA device is detected. I can know.
Further, when the detection duration exceeds the threshold, the administrator can notify the user of the OA device that the device has been forgotten to turn off the power based on the alarm and call attention.

Furthermore, when either the lighting controller or the air conditioning controller determines that the high-accuracy human body detection sensor stays in a set time zone such as a holiday or at night, an alarm specifying a unit section is issued. You can also.
In this way, it is possible to identify the location of the intrusion and notify the person in charge of security that there is an illegal intruder.
At this time, if the lighting controller turns on the lighting device in the unit section where the intruder is present, the escape destination of the intruder can be visually confirmed, and tracking becomes easy.
As a matter of course, since the unit section where the person in charge of security stays and the destination are also illuminated, there is no safety problem when performing the security activities.

Furthermore, either the lighting controller or the air conditioning controller can determine that a fire has occurred when the detected temperature from the high-precision human body detection sensor exceeds a predetermined value, and can issue an alarm specifying the unit section.
In this way, it is possible to discover the location while identifying the location at the initial stage of the occurrence of a fire, which can greatly contribute to fire prevention.
At this time, if the lighting controller illuminates the lighting equipment in the unit area where the fire occurred, the location of the fire can be visually confirmed. Lights up to support fire fighting activities.

The energy load control system of the present invention accurately acquires human presence / absence information by a thermopile type high-precision human body detection sensor for each unit section, which is a personal space obtained by dividing a large space, and provides accurate information for each unit section. We have succeeded in providing a system that controls energy load based on the presence / absence information of a new person.
As a result, it has become possible to construct an energy load control system having a long life at a low initial cost.
The high-precision human body detection sensor of the present invention can completely remove disturbances such as changes in environmental temperature, sunshine, human residual heat, OA equipment, etc., and can accurately determine the presence / absence of a person. The reliability of the energy load control system has been greatly improved.
In addition, the information on the disturbance itself was incorporated into the control contents of the system and utilized to improve the quality of the control contents.

Claims (10)

Equipment that uses the unit compartment divided into a personal space as the energy load target area,
A controller for controlling the energy load of the devices;
A high-precision human body detection sensor arranged for each unit section, the detection range corresponding substantially to the unit section,
In an energy load control system consisting of
The high-precision human body detection sensor is
A unit in which a multi-element type thermopile array having three or more elements capable of detecting the energy load target area with a required accuracy and a condensing part for condensing light on each of the plurality of elements are formed. Infrared condensing body comprising a plurality of integrated infrared condensing bodies in order to make it possible to detect the energy load target area almost without exception, and an infrared detecting unit comprising:
A signal processing unit for processing an analog signal input from the infrared detection unit;
An arithmetic processing unit that performs data processing on the signal input from the signal processing unit to determine whether a person exists in the detection region; and
It is composed of an input / output unit that transmits and receives information to and from the controller,
The controller is
Input / output means for transmitting and receiving information to and from the high-precision human body detection sensor;
Comprising arithmetic processing means for controlling the energy load of the devices by performing arithmetic processing on the signal from the high-precision human body detection sensor,
Increase the output of the devices in the energy load target area that has received a signal that the person stays from the high-precision human body detection sensor, and output the devices in the energy load target area that have received the signal that the person does not stay Energy load control system that performs decreasing control.   The high-accuracy human body detection sensors are assembled and integrated in four directions that are divided into four equal parts in the circumferential direction, and are arranged at the center of the integrated section in which the four unit sections are stacked vertically and horizontally. The energy load control system according to claim 1.   The controller includes a determination unit for determining whether or not a person stays in an area adjacent to the energy load target area where a person stays, and when it is determined that a person does not stay in the adjacent area, the devices in the area The energy load control system according to any one of claims 1 to 2, wherein the energy load is reduced.   The equipment is a lighting device, and the controller reduces the color temperature and reduces the color temperature when it is determined that a person does not stay in the energy load target region. The energy load control system according to any one of claims 1 to 3.   The appliances are lighting fixtures, and the controller refers to the illuminance correction value table for the time-dependent illuminance and aging degradation for each lighting fixture stored in the storage means, and from the high-precision human body detection sensor. 5. The energy load control system according to claim 1, wherein the illuminance is adjusted based on a presence / absence signal of a person and a presence / absence signal of solar radiation.   The equipment is an air conditioner, and the controller controls an air conditioning load based on human presence / absence information, number information, and presence / absence information of solar radiation from the high-precision human body detection sensor. The air conditioning load control system according to any one of claims 1 to 5.   When the controller determines that the signal from the high-precision human body detection sensor is an OA device heat source and the detection temperature or the detection duration exceeds a predetermined value, the controller issues an alarm specifying the energy load target region. The energy load control system according to any one of claims 1 to 6.   8. The controller, when detecting that a person stays in a time zone in which the high-precision human body detection sensor is set, issues a warning specifying the energy load target area. An energy load control system described in any of the above.   2. The controller according to claim 1, wherein when the temperature detected from the high-precision human body detection sensor exceeds a predetermined value, the controller determines that a fire has occurred and issues an alarm specifying the energy load target area. 8. The energy load control system described in any one of 8.   The energy load control system according to any one of claims 8 to 9, wherein the controller turns on the luminaire in the energy load target area where a person stays.