CN111853685A - An LED smart desk lamp that automatically adjusts brightness and color temperature - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及一种自动调节亮度和色温的LED智能台灯。The invention relates to an LED intelligent desk lamp that can automatically adjust brightness and color temperature.
背景技术Background technique
LED台灯是家常电器之一，主要用于学习、阅读、工作等照明之用，但是现有的台灯功能比较单一，基本只有照明功能，而且大部分灯具需要使用者手动进行调节灯具的照度，使用多有不便；除此之外，目前市面上的LED台灯多是单一的色温，使用者长时间在此照明下学习，会很乏味，学习效率降低；以上所述台灯无法满足现代家居的智能化和人性化的要求；因此，急需设计一款既能根据环境光强进行实时调节，又能根据使用户的精神状态自动调节色温的台灯。LED desk lamp is one of the household electrical appliances, mainly used for study, reading, work and other lighting purposes, but the existing desk lamp function is relatively simple, basically only the lighting function, and most of the lamps and lanterns require the user to manually adjust the illumination of the lamps, use There are many inconveniences; in addition, most of the LED desk lamps on the market currently have a single color temperature, and users will be tedious to study under this lighting for a long time, and the learning efficiency will be reduced; the above-mentioned desk lamps cannot meet the intelligence of modern homes. Therefore, it is urgent to design a table lamp that can not only adjust in real time according to the ambient light intensity, but also automatically adjust the color temperature according to the user's mental state.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服现有技术之不足，提供一种自动调节亮度和色温的LED智能台灯。The purpose of the present invention is to overcome the deficiencies of the prior art and provide an LED smart desk lamp that can automatically adjust brightness and color temperature.
本发明解决其技术问题所采用的技术方案是：The technical scheme adopted by the present invention to solve its technical problems is:
一种自动调节亮度和色温的LED智能台灯，其包括台灯本体，所述台灯本体上设有控制单元、用以检测环境光照强度的光照检测单元、用以采集用户额头表皮温度的皮温信号采集单元、白色LED灯和若干个可变色LED灯，所述光照检测单元的输出端连接所述控制单元的输入端，所述皮温信号采集单元的输出端连接所述控制单元的输入端，所述控制单元的输出端连接所述白色LED灯和所述若干个可变色LED灯，所述控制单元根据环境光照强度调节所述白色LED灯和若干个可变色LED灯的亮度，所述控制单元根据用户额头表皮温度调节所述若干个可变色LED灯的发光颜色。An LED smart desk lamp that automatically adjusts brightness and color temperature, comprising a desk lamp body, the desk lamp body is provided with a control unit, a light detection unit for detecting ambient light intensity, and a skin temperature signal collection for collecting a user's forehead skin temperature unit, white LED lights and several variable color LED lights, the output end of the illumination detection unit is connected to the input end of the control unit, the output end of the skin temperature signal acquisition unit is connected to the input end of the control unit, so The output end of the control unit is connected to the white LED light and the plurality of color-changing LED lights, the control unit adjusts the brightness of the white LED light and the plurality of color-changing LED lights according to the ambient light intensity, the control unit The luminous colors of the plurality of color-changing LED lights are adjusted according to the temperature of the user's forehead epidermis.
在另一较佳实施例中，所述台灯本体包括底座、支架、万向头和灯座，所述支架设置在所述底座上，所述灯座通过所述万向头连接所述支架，所述白色LED设置在所述灯座内，所述若干个可变色LED灯均匀地成圈设置在所述灯座的下沿上。In another preferred embodiment, the lamp body includes a base, a bracket, a universal head and a lamp socket, the bracket is arranged on the base, and the lamp socket is connected to the bracket through the universal head, The white LEDs are arranged in the lamp socket, and the plurality of variable-color LED lamps are uniformly arranged in a circle on the lower edge of the lamp socket.
在另一较佳实施例中，所述光照检测单元设置在所述灯座外侧面。In another preferred embodiment, the light detection unit is arranged on the outer side surface of the lamp socket.
在另一较佳实施例中，所述皮温信号采集单元设置在所述灯座外侧面。In another preferred embodiment, the skin temperature signal acquisition unit is arranged on the outer side of the lamp socket.
在另一较佳实施例中，所述控制单元设置在底座内。In another preferred embodiment, the control unit is arranged in the base.
在另一较佳实施例中，所述灯座是圆台形灯座，所述可变色LED灯的光线沿着所述圆台的母线方向向外发出。In another preferred embodiment, the lamp holder is a circular truncated lamp socket, and the light of the variable-color LED lamp is emitted outward along the generatrix direction of the truncated truncated lamp.
在另一较佳实施例中，所述可变色LED灯包括红绿蓝三基色LED灯。In another preferred embodiment, the variable-color LED lamp comprises three primary color LED lamps of red, green and blue.
在另一较佳实施例中，所述光照检测单元采用光敏电阻。In another preferred embodiment, the light detection unit adopts a photoresistor.
在另一较佳实施例中，所述皮温信号采集单元采用热释电传感器。In another preferred embodiment, the skin temperature signal acquisition unit adopts a pyroelectric sensor.
在另一较佳实施例中，所述光照检测单元和所述皮温信号采集单元通过一双路数模转换器连接所述控制单元。In another preferred embodiment, the light detection unit and the skin temperature signal acquisition unit are connected to the control unit through a dual-channel digital-to-analog converter.
本发明的有益效果是：The beneficial effects of the present invention are:
1、本发明采用光照检测单元检测光照强度，采用皮温信号采集单元采集用户额头表皮温度，控制单元根据光照强度和用户额头表皮温度调节白色LED灯和可变色LED灯的亮度，控制单元还根据用户额头表皮温度调节可变色LED灯的发光颜色；当周围光线的明暗发生变化时，白色LED灯的亮度自动调节到适合的亮度，照射在学习区域，保护用户的视力；当用户的精神状态不佳时，可变色LED灯会发出比白色LED灯强度较弱的不同颜色的光，照射在学习区域之外的书桌周围，起到调节学习气氛的作用，从而提高学习效率。1. The present invention adopts the illumination detection unit to detect the illumination intensity, adopts the skin temperature signal acquisition unit to collect the temperature of the user's forehead epidermis, and the control unit adjusts the brightness of the white LED lamp and the variable-color LED lamp according to the illumination intensity and the temperature of the user's forehead epidermis, and the control unit also The temperature of the user's forehead skin adjusts the color of the color-changing LED light; when the surrounding light changes, the brightness of the white LED light is automatically adjusted to a suitable brightness, illuminating the learning area to protect the user's eyesight; when the user's mental state is not In good times, the variable-color LED light will emit light of different colors with weaker intensity than the white LED light, and it will illuminate around the desk outside the learning area to adjust the learning atmosphere, thereby improving the learning efficiency.
2、将可变色LED灯均匀地成圈设置在所述灯座的下沿上，使得不同颜色的光能够照射在学习区域以外的书桌周围，起到调节学习氛围的作用，从而调节用户的学习状态，进一步提高学习效率。2. The variable-color LED lights are evenly arranged in a circle on the lower edge of the lamp holder, so that light of different colors can be irradiated around the desk outside the learning area, which can adjust the learning atmosphere and adjust the user's learning. state to further improve learning efficiency.
3、将光照检测单元和皮温信号采集单元设置在所述灯座外侧面方便采集环境光照强度和用户额头表皮温度。3. The light detection unit and the skin temperature signal acquisition unit are arranged on the outer side of the lamp holder to facilitate the collection of ambient light intensity and the temperature of the user's forehead skin.
4、可变色LED灯的光线沿着圆台母线向外倾斜，使得其光线照射在用户学习区域周围，有利于调节用户学习状态。4. The light of the variable-color LED light is inclined outward along the busbar of the round table, so that the light shines around the user's learning area, which is beneficial to adjust the user's learning state.
5、采用红绿蓝三基色LED灯可发出红光、绿光和蓝光以及不同颜色光组合的复色光，可根据用户的精神状态选择发出合适的光。5. The use of red, green and blue LED lights can emit red light, green light and blue light, as well as complex light of different color light combinations, and can choose to emit appropriate light according to the user's mental state.
6、采用光敏电阻感知环境光照强度，光敏电阻灵敏度高、无极性、动态范围宽、可测强弱光。6. The photoresistor is used to sense the ambient light intensity. The photoresistor has high sensitivity, no polarity, wide dynamic range, and can measure strong and weak light.
7、采用热释电传感器适合测量人体的温度。7. The use of pyroelectric sensors is suitable for measuring the temperature of the human body.
以下结合附图及实施例对本发明作进一步详细说明；但本发明的一种自动调节亮度和色温的LED智能台灯不局限于实施例。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, an LED smart desk lamp that automatically adjusts brightness and color temperature of the present invention is not limited to the embodiments.
附图说明Description of drawings
图1是本发明一较佳实施例的系统框图；1 is a system block diagram of a preferred embodiment of the present invention;
图2是本发明一较佳实施例的结构示意图；2 is a schematic structural diagram of a preferred embodiment of the present invention;
图3是本发明一较佳实施例的电路原理图。FIG. 3 is a circuit schematic diagram of a preferred embodiment of the present invention.
具体实施方式Detailed ways
实施例，参见图1至图2所示，本发明的一种自动调节亮度和色温的LED智能台灯，其包括台灯本体，所述台灯本体包括底座1、支架2、万向头3和灯座4，所述支架2设置在所述底座1上，所述支架2通过所述万向头3连接所述灯座4，以使所述灯座4的位置可调节；所述台灯本体上设有控制单元9、用以检测环境光照强度的光照检测单元8、用以采集用户额头表皮温度的皮温信号采集单元7、白色LED灯6和若干个可变色LED灯5，所述光照检测单元8采用光敏电阻，所述皮温信号采集单元7采用热释电传感器，所述可变色LED灯5包括红色LED灯、绿色LED灯、蓝色LED灯，所述光照检测单元8的输出端和所述皮温信号采集单元7的输出端通过一双路数模转换器连接所述控制单元9的输入端，所述控制单元9的输出端分别连接所述白色LED灯6和所述若干个可变色LED灯5，所述控制单元9设置在所述底座1内，所述白色LED设置在所述灯座4内，所述若干个可变色LED灯5均匀地成圈设置在所述灯座4的下沿上，本实施例的灯座4采用圆台形灯座，所述若干个可变色LED灯5的光线沿着所述圆台的母线方向向外发出，导致光线朝外照射在用户的学习区域周围；所述光照检测单元8和皮温信号采集单元7分别设置在所述灯座4的外侧面；所述控制单元9根据环境光照强度调节所述白色LED灯6和若干个可变色LED灯5的亮度，所述皮温信号采集单元7根据用户额头表皮温度调节所述若干个可变色LED灯5的发光颜色。1 to 2, an LED smart desk lamp that automatically adjusts brightness and color temperature of the present invention includes a desk lamp body, which includes a
参见图3所示，本实施例的电路原理图，其中U1 OPT-538是热释电传感器，与外围电阻、电容构成所述皮温信号采集单元7，U2为运算放大器，U2连接U1将皮温信号放大后发送至模数转换器U3；光敏电阻R30感知环境的光照强度将其发送至模数转换器U3；模数转换器U3对两路模拟量进行模数转换后输送至单片机U4；单片机U4根据皮温信号输出控制信号至三基色LED控制芯片U6以控制可变色LED灯5发出不同颜色及亮度的光，单片机U4根据光照强度输出控制信号至照明控制芯片U5以控制白色LED灯6的亮度。Referring to Fig. 3, the circuit schematic diagram of this embodiment, wherein U1 OPT-538 is a pyroelectric sensor, and the peripheral resistance and capacitance constitute the skin temperature
U1芯片OPT-538热释电传感器，采用红外线传感器，能接收物体发射出的红外线并使之转换成电压信号，该传感器工作温度是-20～+70°，特别适合测量人体的温度，U2芯片LM324是四运放，对红外线传感器转换成的电压信号进行放大处理，功能是将热释电传感器接收的红外辐射能量转换为可供数模转换器接受的电压；光敏电阻R30根据不同的感光强度输出不同的电压；U3芯片ADC0832模数转换芯片将两路模拟量转化成数字量，再将数字信号交给单片机EM78P152处理；U5芯片CAT4201接收EM78P152发出控制信号，控制白色LED灯6亮暗。U6芯片FZH04接收EM78P152发出控制信号，控制可变色LED灯5亮暗并发出不同颜色的光。U1 chip OPT-538 pyroelectric sensor, using infrared sensor, can receive the infrared light emitted by the object and convert it into a voltage signal, the working temperature of the sensor is -20 ~ +70 °, especially suitable for measuring the temperature of the human body, U2 chip LM324 is a four-op amp, which amplifies the voltage signal converted by the infrared sensor. Its function is to convert the infrared radiation energy received by the pyroelectric sensor into a voltage that can be accepted by the digital-to-analog converter; Output different voltages; U3 chip ADC0832 analog-to-digital conversion chip converts two analog quantities into digital quantities, and then sends the digital signal to the single-chip EM78P152 for processing; U5 chip CAT4201 receives control signals from EM78P152 to control the
U2芯片LM324是四运算放大器，本电路使用三个运算放大器与外围电阻构成2级放大电路，对皮温信号进行放大处理，引脚介绍：1、7、8和14脚是四个输出端，2、6、9和13脚是四个负输入端，3、5、10和12脚是四个正输入端，4脚是电源端，11脚是接地端。U2 chip LM324 is a four operational amplifier. This circuit uses three operational amplifiers and peripheral resistors to form a 2-stage amplifier circuit to amplify the skin temperature signal. Pin introduction: 1, 7, 8 and 14 pins are four output terminals.
U3芯片ADC0832是模数转换芯片，有2个模拟信号输入端，用于皮温信号和光照检测的信号转换，引脚介绍：1脚片选使能，低电平芯片使能；2脚模拟输入通道0，或作为IN+/-使用；3脚CH1模拟输入通道1，或作为IN+/-使用；4脚接地端；5脚数据信号输入，选择通道控制；6脚数据信号输出，转换数据输出；7脚芯片时钟输入；8脚电源端。The U3 chip ADC0832 is an analog-to-digital conversion chip with 2 analog signal input terminals for signal conversion of skin temperature signal and light detection. Pin introduction: 1 pin chip select enable, low level chip enable; 2 pin analog Input channel 0, or use as IN+/-; 3-pin CH1
U4芯片EM78P152单片机作为主控芯片，接收模数转换后的数字信号，控制白色LED灯和可变色LED灯的亮暗；引脚介绍：1脚通用I/O引脚、下降沿触发的外部中断输入引脚，2脚VSS电源(地)，3、4和10脚通用I/O引脚，5脚VDD电源端，6-7脚通用I/O引脚、XT振荡器输入引脚，8脚通用I引脚、置RESET为低电平复位，9脚通用I/O引脚、外部时钟/计数器输入引脚。The U4 chip EM78P152 single-chip microcomputer is used as the main control chip to receive the digital signal after analog-to-digital conversion and control the brightness of the white LED light and the variable color LED light; Pin introduction: 1-pin general-purpose I/O pin, external interrupt triggered by falling edge Input pin, 2-pin VSS power supply (ground), 3-, 4- and 10-pin general-purpose I/O pins, 5-pin VDD power supply, 6-7 pins general-purpose I/O pin, XT oscillator input pin, 8 Pin general I pin, set RESET to low level reset, 9 pin general I/O pin, external clock/counter input pin.
U5芯片CAT4201是LED照明控制芯片，与外围电阻、电容和电感等构成白色LED灯控制电路；引脚介绍：1脚调光控制和关闭端，2脚接地端，3脚外接电阻接地，平均LED之间电流，4脚外接电感端，5脚供电端。U5 chip CAT4201 is an LED lighting control chip, which forms a white LED light control circuit with peripheral resistors, capacitors and inductors; Between the current, the 4-pin external inductor terminal, the 5-pin power supply terminal.
U6芯片FZH04是三基色LED控制芯片，与外围电阻构成可变色LED灯控制电路；引脚介绍：1脚Red LED驱动输出，2脚Green LED驱动输出，3脚Blue LED驱动输出，4脚接地端，5脚控制数据输出；用于多片级联，6脚控制数据输入，7脚模式设定：接VDD低速模式；悬空高速模式，8脚VDD电源端，电源VCC、VBAT为12V，VDD为5V。U6 chip FZH04 is a three-color LED control chip, which forms a variable-color LED light control circuit with peripheral resistors; pin introduction: 1-pin Red LED driver output, 2-pin Green LED driver output, 3-pin Blue LED driver output, 4-pin grounding terminal , 5-pin control data output; used for multi-chip cascade, 6-pin control data input, 7-pin mode setting: connect to VDD low-speed mode; floating high-speed mode, 8-pin VDD power supply terminal, power supply VCC, VBAT are 12V, VDD is 12V 5V.
本实施例的工作原理和使用方法：用户打开台灯开关，开始学习模式。使用过程中，光照检测单元8将用户周围光线的强弱反馈给控制单元9，控制单元9根据光照检测信号调节白色LED灯6的亮度，保证用户在适宜的亮度下学习；皮温信号采集单元7采集初始温度并保存，然后每隔一分钟采集一次，并与初始温度比较；当与初始温度相同时，可变色LED灯5不发光；当用户学习疲劳时，额头的表皮温度明显上升，控制单元9根据皮温信号发出指令，控制可变色LED灯5发出相宜的红光，红光照射在书桌周围，可以使学习环境产生活跃的气氛，调动用户的学习活力；待用户疲劳慢慢消除时，采集到的表皮温度渐渐降低，红光逐渐减弱；同理，当用户学习得比较亢奋时，额头的表皮温度明显下降，控制单元9发出指令，控制可变色LED灯5发出相宜的蓝光，蓝光可以让振奋的精神慢慢镇静下来，心境平稳；当用户学习得心烦意燥时，额头的表皮温度会发生显然的波动，控制单元9发出指令，控制可变色LED灯5发出相宜的绿光，绿光可以让人神清气爽，耳目一新，情绪逐渐平静；本发明是一款综合考虑人、台灯和光环境而设计的台灯，白色LED灯6作为主灯，可变色LED灯5作为辅灯，两者相辅相成，营造舒适的光线环境氛围。The working principle and use method of this embodiment: the user turns on the lamp switch to start the learning mode. During use, the
上述实施例仅用来进一步说明本发明的一种自动调节亮度和色温的LED智能台灯，但本发明并不局限于实施例，凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均落入本发明技术方案的保护范围内。The above embodiments are only used to further illustrate a kind of LED smart desk lamp that automatically adjusts brightness and color temperature of the present invention, but the present invention is not limited to the embodiments, and any simple modifications made to the above embodiments according to the technical essence of the present invention, Equivalent changes and modifications all fall within the protection scope of the technical solutions of the present invention.
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