KR20040063873A - Apparatus and method for controlling automatically illumination sensing lamp - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling automatically an illumination sensing lamp are provided to control adaptively the lamp regardless of an artificial variation of illumination by sensing a natural variation of illumination. CONSTITUTION: An apparatus for controlling automatically an illumination sensing lamp includes an illumination sensor, an illumination data transceiver, a temperature compensation circuit, and a main controller. The illumination sensor(1) is used for sensing external illumination. The illumination data transceiver is used for transmitting and receiving an illumination value of the illumination sensor. The temperature compensation circuit(10) is installed in the inside of the illumination sensor in order to correct errors of the illumination sensor. The main controller(3) is used for receiving the illumination data from the illumination data transceiver and outputting a control signal to control automatically a lamp.

Description

Illumination detection automatic control device and method {omitted}

The present invention relates to an automatic illumination control device and method, and more particularly, to accurately calculate the sunrise and sunset times by receiving latitude, longitude, and standard time by triangulation from a Global Positioning System (GPS) module, The present invention relates to an auto-illumination sensing automatic control device and method capable of automatically controlling a target lighting by detecting a change in illumination and processing a signal irrespective of accidental or artificial illumination changes.

Conventional illuminance-based lighting control device is simply a comparison point and a slight delay time using an illuminance sensor for a general timer such as a button set timer using an electronic board or a mechanical timer using a motor and a cam method. Given the delay time, the illuminance was detected by comparing only above and below the reference value. The timer provided in the conventional lighting control device operates by simply using a 24-hour period as a general period. Therefore, the operation according to a specific day such as weekdays, Saturdays, holidays, etc. could not be reflected, and the timer had to have a mechanical time error due to the change of time, and CdS ( Since cadmium sulfide (Cadmium sulfide) cells are used, there is a problem of causing a malfunction of the device, such as the lighting being turned on even when the lighting does not need to be turned on because it is sensitive to temperature change. In addition, the above conventional lighting control device, when installed in a certain area, there was a problem that you must manually input the area code or latitude and longitude data provided to the area.

The present invention was developed under the above-mentioned background, and receives accurate position data and visual data from a GPS data receiving device, and detects and targets only a natural illuminance change irrespective of an artificial illuminance change of an installation environment of an illuminance sensor. It is an object of the present invention to provide an auto-illumination control device and a method for automatically detecting illumination that can automatically control lighting.

1 is a block diagram of an illumination intensity sensing automatic control device according to an embodiment of the present invention.

2A is a graph showing the slope of the illuminance value with respect to the natural illuminance change from sunrise to sunset.

Fig. 2B is a graph showing a comparison of changes in illuminance values with time according to a conventional calibration illuminometer and changes in illuminance values according to the apparatus of the present invention.

3 is a graph showing the change in temporal illuminance value according to the transmittance of light according to the installation location of an illuminance sensor such as glass.

Fig. 4 is a block diagram showing the configuration of the main part of the apparatus of the present invention in more detail.

5 shows a practical configuration of an apparatus according to an embodiment of the present invention.

FIG. 6 is a graph showing experimental data showing filtering of abnormal light sources such as diffuse reflection, abnormal light sources, or light sources reflected by glass, and reflecting only normal light sources as illuminance values. FIG.

Fig. 7 is a view for explaining the recovery operation of the control device of the present invention at the time of power failure recovery.

* Description of the symbols for the main parts of the drawings *

1: Illumination sensor 2: Wireless data transmission and reception device

3: main controller 4: infrared data transmission / reception apparatus

5: Ultrasonic data transmission and reception device 6: Wired data transmission and reception cable

7: GPS data receiver 8: sunrise, sunset time calculation circuit

9: timer device 10: temperature compensation circuit

Illumination sensing illumination automatic control device according to a first aspect of the present invention,

An illuminance sensor for detecting an external illuminance, an illuminance data transmitting / receiving means for transmitting and receiving an illuminance value from the illuminance detecting sensor, and installed inside the illuminance detecting sensor to compensate for a temperature difference in an external environment, And a main compensator for compensating for errors, and outputting a control signal for receiving illumination data from the illumination data transmitting / receiving means and automatically controlling lighting to be opened and closed by the user.

Illumination sensing type automatic control method according to another feature of the present invention,

Illumination detection step for detecting external illuminance, illumination data transmission and reception step for transmitting and receiving the illumination value detected in the illumination detection step, and compensating for the temperature difference in the external environment to compensate for the circuit by temperature in the illumination detection step. And a step of compensating for an error and outputting a control signal for automatically controlling lighting to be opened and closed by receiving the illuminance data received in the illuminance data transmitting and receiving step.

DETAILED DESCRIPTION Hereinafter, an illumination and illumination type automatic control device and method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an automatic illumination sensing illumination control apparatus according to an embodiment of the present invention, in the drawing, reference numeral 100 denotes an automatic illumination control apparatus of the present invention, and the apparatus comprises an illumination intensity sensing sensor (1). ), A wireless data transmission / reception device 2, a main control device 3, a GPS data reception device 7, and the like.

The illuminance detecting sensor 1 is composed of a photo diode or the like, and as a data transmitting / receiving device which transmits data from the illuminance detecting sensor 1 to the main controller 3, wireless data transmitting / receiving is provided. Apparatus 2, infrared data transmission / reception device 4, ultrasonic data transmission / reception device 5, and wired data transmission / reception cable 6 are provided in the present invention. Can be used. In the wireless transmitting / receiving apparatus 2, RF modulation of 315 MHz or 433 MHz is used, the 32 KHz modulation is used in the infrared data transmitting / receiving apparatus 4, and the ultrasonic data transmitting / receiving apparatus 5 uses ultrasonic waves. Modulation is used, and shielded cable, twisted-pair, and the like are used in the wired data transmission / reception cable 6. The illuminance detection sensor 1 includes a temperature compensation circuit 10 that compensates for a circuit error of the sensor by compensating for a temperature difference of an external environment, and prevents the illuminance value from changing according to a natural temperature change. The GPS data receiver 7 receives GPS data such as latitude, longitude, and standard time from a global positioning system (GPS), and the main controller 3 receives the latitude, longitude, and standard from the GPS data receiver 7. The illumination sensor 1 is installed by a timer device 9 that receives GPS data such as time and is adjusted by the data, and GPS data such as latitude, longitude, and standard time from the GPS data receiver 7. A sunrise and sunset time calculation circuit 8 for calculating the most accurate sunrise and sunset time of the place is provided, which is included in the timer device 9.

Next, the operation of the lighting control apparatus according to the present invention will be described with reference to FIG. 1.

The illuminance detection sensor 1 may be installed at the same place as the main control device 3, and is usually installed separately. In general, a user can operate the timer by setting a timer at a desired time to turn off the control target lighting. For example, based on the data from the GPS data receiving device 7, the lighting sensor 1 is set to operate at the desired illuminance value and time according to the installation position, sunrise, and sunset time of the illuminance sensor 1, and the light is turned on automatically. To be done. The illuminance detection sensor 1 transmits an illuminance value to the main controller 3 according to a change in the external illuminance environment so that the main control apparatus 3 can control the illumination when the illuminance value is less than or equal to the set illuminance value.

Figure 2a is a graph showing the slope of the illuminance value with respect to the natural illuminance change from sunrise to sunset, Figure 2b is a change in illuminance value over time by a conventional calibration illuminometer and illuminance value according to the device of the present invention It is a graph comparing the change of.

Referring to FIG. 2B, the illuminance value of the general calibrated illuminometer is difficult to obtain a value exactly desired by a user due to a rapid change rate with time. However, in the present invention, the user may adjust the brightness value over time by applying a formula that is converted into a linear form and displayed. This is realized by an internal algorithm of the central processing unit 3a of FIG. 4, which will be described later, and is based on a gradient calculation method by digital filtering and multi-point detection.

3 is a graph showing a change in temporal illuminance value according to the transmittance of light according to an installation location of an illuminance sensor such as glass. In general, since the illuminance value detected by the illuminance sensor has many deviations, it was necessary to match the mismatch between the illuminance values in the calibration environment and the installation environment of the illuminance sensor as much as possible, but the apparatus of the present invention provides an installation time or a place of the illuminance detection sensor 1. Irrespective of, for example, a constant converted by comparing and recognizing the illuminance value of the illuminance detection sensor 1 to be installed and the illuminance value of the illuminance sensor 1 to be installed, regardless of the inner surface of the coated glass, etc. , The specific constant obtained in the present invention) was automatically calculated so that the light transmittance was close to 100%. This is also implemented by the central processing unit 3a of FIG. 4 described later.

Fig. 4 is a block diagram showing the configuration of the main part of the apparatus of the present invention in more detail. As shown, the central processing unit 3a includes the position, visual information, and the illuminance sensor 1 received from the GPS. Illuminance information and the like are input. The timer device 9 includes not only the position and the time information from the GPS, but also the 24-hour period, weekly, monthly, yearly cycle, weekdays, holidays, yearly schedules, monthly events, weekly events, specific events, and the like. Contains data about the date.

Hereinafter, the operation of the central processing unit 3a of the present invention will be described in detail. The central processing unit 3a internally calculates the slope of the specific illuminance change δL for a specific time δT and processes it separately from the change slope of the natural light and the artificial change slope. That is, by filtering all the minute changes in illumination and calculating the change in illumination (δL / δT) against the time when the amount of change in the constant illumination change range rises or falls within a specific time range, Internal calculations and judgments are made of changes in illuminance or abrupt artificial changes caused by cleaning or headlights, so that the user can automatically control the target lighting by calculating the slope when passing through the illuminance values even if the user simply sets one specific illuminance value. Can be.

In addition, the central processing unit (3a), even during the day when the lights are turned off due to a sudden change in the illumination, even if the illumination value of the time of day and appearance, even if the change of illumination, heavy snow, rainy season, etc. Due to this, for example, when there is a drop of less than a predetermined percentage of normal illuminance, the target lighting is controlled to be automatically turned on.

On the other hand, since the illumination sensor (1) is installed separately from the main control device (3), the power installed in the sensor (1) is configured so as not to separately manage the power by using a solar cell and a charging circuit (not shown). . However, in a harsh environment where it is difficult to drive a solar cell, a small battery is used, and in this case, the illumination sensor 1 in accordance with the importance of the data change time point in order to maximize the battery life, the number of data transmission near In this case, the battery can be controlled to significantly reduce battery consumption due to data transmission in an unnecessary section by inducing reverse operation automatically.

In a normal operation, the timer device 9 or the illumination sensor 1 and the sunrise and sunset time calculation circuit 8 may perform the most accurate operation desired by the user. If the correct illuminance data is not transmitted to the main controller 3 due to a failure of 1) or a failure of a wireless data transmission / reception apparatus or the like, the central processing unit 3a is stored therein or GPS to prevent basic operations. The basic operation is based on the calculated sunrise and sunset data.

In addition, the central processing unit 3a automatically calculates and sets the illuminance value to be operated by the device itself even if the user does not input a numerical value for the illuminance value that the user wants to set in the main controller 3, and thereafter, for several days thereafter. The self-educated function that adds and averages the filtered data of the data is reflected in the pre-stored illuminance value.

In addition, the initial value sent from the illuminance detection sensor 1 may be manufactured or adjusted in the same manner to the plurality of main control devices 3 so that the data of one illuminance detection sensor 1 may be shared by the plurality of main control devices 3. The cost can be reduced, and the signboard of one building or the street light of the same area can be turned on or off simultaneously or sequentially.

In the case of normal illumination change, such as a light source reflected by an abnormal light source, diffuse reflection, or glass and drawn into the illumination sensor 1, the central processing unit 3a filters them in case of a sudden change or a gentle, instantaneous case. When continuous data is inputted, the average value (M) of the data and a certain ratio (± M x X% = σ) of the data are used within the range of several to tens of data previously input to determine whether the abnormal data is sudden. A data extraction method based on a reliable standard deviation level is used, in which only (M + σ to M-σ) data is regarded as normal data and sent as control data. FIG. 6 is a graph showing experimental data showing filtering of abnormal light sources such as diffuse reflection, abnormal light sources or light sources reflected by glass, and reflecting only normal light sources as illuminance values in the above case. Numbers are specific constants obtained in the present invention, and 318 and 347 are not included in the data as abnormal data.

In addition, the central processing unit 3a periodically turns on a standard lamp such as a control target lighting at a predetermined distance, and reads the corresponding illumination value to a predetermined amount less than a data value input in a normal environment due to fog, yellow dust, and air pollution. If it is input, it is judged to be out of sight and operates to turn on the lighting even during the day. At this time, in order to eliminate the error of natural light, the light source emitted from the standard lamp reaches the illuminance detection sensor 1 by completely manipulating and storing the data when the standard lamp is turned on in the same natural light and comparing it to the ambient light. The amount of light to be accurately detected and processed.

7 is a view for explaining the recovery operation of the control apparatus of the present invention at the time of power failure recovery, and the date and time of the power failure time instantaneously to eliminate the abnormal operation caused by the power failure, and the control discontinuity that may occur during the recovery process. It is operated so that the most suitable continuity control can be performed at the time of power failure recovery, which will be described in detail with reference to FIG.

First, in the drawing, in the case of ①, that is, within the time point before the timer device 9 is turned on after the timer device 9 is turned off, the control target illumination is always kept off, and in the case of ②, That is, since the timer device 9 is turned on before the calculation sunrise time, the control target illumination is always kept on. In the case of ③, that is, within the lighting off point after the calculation sunrise time, if the illuminance value of the recovery point is lower than the low setting value, the illumination is kept on, and if the illuminance value of the recovery point is the low setting value If abnormal, switch off. In the case of ④, the lighting is within the lighting on time after the lighting is turned off. In this case, the illumination is turned off because the illuminance value of the recovery time exceeds the HIGH setting value. In the case of ⑤, before the sunset time calculated after lighting, if the illuminance value of the recovery point is below the low setting value, the illumination is kept on, and if the illuminance value of the recovery point is more than the low setting value, it is turned off. In the case of (6), the timer device 9 is off after the calculation sunset time, and operates to keep the lighting always on.

On the other hand, in the automatic lighting control method according to the present invention, the illuminance sensor (1) detects the external illuminance, and transmits and receives the detected illuminance value by the wireless data transmitting and receiving device (2), the temperature Compensation of the temperature difference of the external environment by the compensation circuit 10 to compensate for the circuit error due to the temperature in the external illuminance detection, the illumination to be opened and closed by the user based on the received illuminance data by the main controller 3 It is operated to output a control signal to automatically control.

In addition, in the control signal output, the GPS device 9 receives GPS data such as latitude, longitude, standard time, etc. from the GPS based on this data, and receives the GPS data. You can set the exact location and the sunrise and sunset times.

As described above, according to the illumination control type automatic lighting control apparatus and method according to the present invention, the effect of being able to adaptively control the lighting to be controlled without being influenced by the user's setting as well as the natural or artificial environment. Can be.

In addition, even in the case of a failure of an illuminance sensor or a wireless transmitting / receiving device, the basic control operation can be performed by the data input from the GPS.

In addition, remarkable effects such as continuity of control can be obtained by temporarily storing the date and time at the time of power failure and controlling them appropriately at the time of recovery from power failure.

The control target of the present invention can be applied to general electric appliances as well as lighting such as street lamps and signs.

Although the present invention has been described above with reference to the accompanying drawings by way of example, the present invention is not limited thereto, and various modifications may be made by those skilled in the art without departing from the spirit and scope of the appended claims below. And modifications.

Claims (20)

An illumination detection sensor for detecting external illumination; Illuminance data transmitting and receiving means for transmitting and receiving an illuminance value from said illuminance detecting sensor; A temperature compensation circuit installed inside the illuminance detecting sensor and compensating for a circuit error of the sensor by compensating for a temperature difference of an external environment; And And a main control device for receiving the illuminance data from the illuminance data transmitting / receiving means and outputting a control signal for automatically controlling the illumination to be opened or closed by the user. The illuminance according to claim 1, wherein the transmitting and receiving means comprises one of a wireless data transmitting and receiving device, an infrared data transmitting and receiving device, an ultrasonic data transmitting and receiving device, and a wired data transmitting and receiving cable. Sensing light automatic control. The GPS data receiving apparatus of claim 1, further comprising a GPS data receiver for receiving GPS data such as latitude, longitude, and standard time from a GPS (Global Positioning System). And a timer device that receives GPS data such as longitude and standard time, and is adjusted by the data. 4. The sunrise and sunset times of claim 3, wherein the timer device calculates the most accurate sunrise and sunset times of the illuminance sensor installation location based on GPS data such as latitude, longitude, and standard time from the GPS data receiver. Illumination sensing type automatic control device comprising a calculation circuit. The timer device according to claim 3, wherein the timer device includes a 24-hour cycle, a weekly, monthly, yearly and lunar cycle, and includes a yearly schedule, a monthly schedule, a weekly schedule, and a schedule of a specific day. Illumination sensing light automatic control device. 4. The controller of claim 3, wherein the main controller comprises a central processing unit (CPU), which internally calculates the slope of a specific illuminance change during a specific time period, thereby changing the illumination intensity gradient and artificial illuminance of natural light. Illumination detection type automatic control device, characterized in that to distinguish the gradient. The apparatus of claim 6, wherein the central processing unit is converted by comparing and recognizing an external illuminance value of an arbitrary time or place with an illuminance value of a time or place to be installed, regardless of the installation time or place of the automatic lighting control device. Illumination-sensing illumination automatic control device, characterized in that the automatic calculation of the constant value to output data close to 100% transmittance of light. According to claim 1, wherein the illumination sensor, if there is a change in the illuminance to feel the discomfort of the clock due to heavy snow, rainy seasons, etc. other than sunrise, sunset time zone, and transmits the change of illumination to the main controller, the central processing unit of the main controller The illumination control type illumination automatic control device, characterized in that the lighting automatically turns on when the change in the illumination is less than the set value. The apparatus of claim 1, wherein a solar cell, a charging circuit, or a battery is used as a power source of the illumination sensor. The method according to claim 6 or 9, wherein when the battery is used as a power source of the illuminance sensor, the central processing unit adjusts the data transmission / reception interval from the illuminance sensor according to the importance of the change point of illuminance data. Illumination sensing light automatic control device. The control device according to claim 1, wherein in the event of a failure of the illuminance detection sensor or the illuminance data radio transmitting / receiving means, the main controller executes an illumination control operation based on the GPS data received and stored from the GPS data receiving apparatus. Illumination detection type automatic control device, characterized in that. According to claim 6, wherein the central processing unit, Illumination-sensing illumination automatic control device characterized in that for converting the display of the illuminance value received from the illuminance sensor in a linear state to facilitate the user to set the desired illuminance value . The method according to claim 6 or 12, wherein the central processing unit is characterized in that it automatically learns and recognizes illuminance values for illumination points and lights out, and automatically calculates and sets illuminance values without manual setting by a user. Illumination-sensing light automatic control device. The apparatus of claim 6, wherein the plurality of main controllers are controlled by one illuminance sensor so that a plurality of main controllers share an initial value transmitted by the illuminance sensor. 8. . The illuminance device of claim 6, wherein the central processing unit reads several to several tens of illuminance values received from the illuminance sensor, and processes only the average value and data within a predetermined ratio as normal data, that is, control data. Sensing light automatic control. The method of claim 6, wherein when the lighting is turned off due to a power failure or the like, The central processing unit always keeps the control target lighting off when it is within a time point before the timer device 9 ON after the timer device 9 OFF; Calculation after timer device 9 On Before the sunrise, the lighting to be controlled is always kept on; If the illumination is within the lighting off time after the sunrise, the lighting is kept on if the illuminance at the time of recovery is below the low setting, and switched off if the illuminance at the time of recovery is above the low setting. To; If it is within an illumination on time point after the illumination is turned off, the illumination is turned off; Calculation after lighting on If the sunset time is before, the lighting is kept on if the illuminance value of the recovery point is less than or equal to the low setting value, and is switched off if the illuminance value of the recovery point is more than the low setting value; Illumination-sensing illumination automatic control device, characterized in that it operates to keep the lighting always on when the timer device (9) is off after the calculated sunset point. The method according to claim 6, wherein the central processing unit periodically turns on a standard lamp such as a target lighting, and when the illuminance value from the standard lamp is input below the normal illuminance value, Illumination-sensing illumination automatic control device, characterized in that the lighting to be controlled to recognize the change in the clock. An illumination detection step of detecting external illumination; An illumination data transmission / reception step of transmitting / receiving an illumination value detected in the illumination detection step; A temperature compensation step of compensating for a circuit error due to temperature in the illuminance sensing step by compensating for a temperature difference in an external environment; And And receiving the illuminance data received in the illuminance data transmitting / receiving step and outputting a control signal for automatically controlling the illumination to be opened or closed by the user. 19. The method of claim 18, further comprising a GPS data receiving step of receiving GPS data such as latitude, longitude, standard time, etc. from a GPS (Global Positioning System), wherein the control signal outputting step is performed by the GPS data receiving step. And receiving GPS data such as latitude, longitude, and standard time, and setting a position and time adjusted by the data. 19. The method of claim 18, wherein the position and time setting step includes a sunrise and sunset time calculating step of calculating an accurate sunrise and sunset time by GPS data such as latitude, longitude, and standard time from the GPS data receiving step. Illumination sensing type automatic control method characterized in that the.