CN104643588B - Intelligent desk - Google Patents

Abstract

The present invention relates to a kind of intelligent desk, including desktop, the display panel in inserted in table top is embedded into inside desktop, the processor module of sidecar or other appropriate locations, information gathering components, communication part and energy supply component.The intelligent desk of the present invention has the pluralistic function such as Automated condtrol and office concurrently, and relatively low using comfortable, cost, and intelligence degree is high, and practicality is high.

Description

smart desk

technical field

The invention relates to an intelligent desk, in particular to an intelligent desk capable of realizing multiple functions.

Background technique

With the development of electronic technology, especially with the development of display technology, touch technology, and electromechanical automation technology, the existing desks are no longer just used as office or support equipment, but can support computer systems, and can be used as needed Realize the interaction between different devices, avoid the problems existing in traditional desks, improve the intelligence of desks, and improve people's work efficiency. Therefore, the existing intelligent desks have been widely used in electronic payment system, billing inquiry system and desktop conferencing system, etc. At present, there are smart desks of various designs in the prior art, but the desks of the prior art generally have various defects such as high cost, low degree of intelligence, and poor practicability.

Contents of the invention

The purpose of the present invention is to avoid the above-mentioned shortcomings of desks in the prior art, and to develop an intelligent desk with multiple functions, comfortable use, and cost control.

In one aspect of the present invention, an intelligent desk is provided, which is characterized in that it includes a desktop, a display panel embedded in the desktop, a processor component embedded in the desktop, a side cabinet, or other appropriate positions, an information collection component, and Communication components, the smart desk also includes an energy supply component, the energy supply component is connected to the desk through a power cord to supply power for the smart desk, wherein the display panel embedded in the desktop is a touch-sensitive LED panel;

The information collection component includes: a pressure sensor, a temperature sensor, a humidity sensor, and/or an infrared sensor, and also includes a brightness collection block;

The energy supply assembly includes a power supply system of multiple power sources, the power supply system includes: a first power supply, a first power supply rectification circuit, and an energy storage circuit, and the input ends of the first power supply, the first power supply rectification circuit, and the energy storage circuit are sequentially connected, the output end of the energy storage circuit provides the load with working power; and the second power supply, the second power supply output voltage control circuit, the unidirectional conduction circuit, the output voltage feedback circuit, the second power supply, the second power supply output voltage control circuit, The unidirectional conductive circuit and the input end of the energy storage circuit are connected in sequence, the output end of the energy storage circuit is connected to the input end of the output voltage feedback circuit, and the output end of the output voltage feedback circuit is connected to the control end of the second power supply output voltage control circuit connected, the second power supply output voltage control circuit outputs the second direct current to the energy storage circuit under the control of the feedback voltage output by the output voltage feedback circuit.

The touch LED panel includes: a thin film transistor formed on one side of the substrate, a touch signal feedback layer is formed on the thin film transistor, a light emitting substrate is arranged on the touch signal feedback layer, and an anode layer of the light emitting substrate It is connected with the drain of the thin film transistor, and a touch signal receiving layer is formed on the other side of the substrate.

Wherein the touch screen and the LED display part of the touch LED panel are integrally formed to reduce the weight and thickness of the display itself.

The pressure sensor is embedded in an appropriate position on the desktop, through which the pressure sensor senses the pressure information including the magnitude of the pressure and pressure changes generated on the desktop, and transmits the pressure information to the processor component via the communication component, and the processor component controls the The pressure information is processed, and the instruction generated according to the pressure information is transmitted to the relevant control system, and the height of the desktop is adjusted by the control system.

The temperature sensor is embedded in the desktop, which is a transmissive photoelectric temperature sensor, including a passive temperature sensitive probe, a transmission optical fiber and a photoelectric signal processing unit.

The temperature sensor is embedded in the desktop, which is composed of two parts: the temperature sensitive film and the base; the temperature sensitive film is composed of a high thermal expansion coefficient metal layer and a silicon dioxide film from top to bottom, and the high thermal expansion coefficient metal layer is also used as a temperature sensor The upper electrode of the silicon dioxide film is used as a vibration film, and at the same time it is used as a component of the temperature sensitive element.

The humidity sensor is embedded in the desktop, and the humidity sensor uses porous ceramic alumina, which includes high-purity aluminum sheet, porous alumina ceramic film, conductive electrode and copper wire.

Wherein the infrared sensor includes an ambient temperature measuring device and an infrared signal temperature sensor, the ambient temperature measuring device is used to measure the current ambient temperature, and the infrared signal temperature sensor is used to measure the maximum temperature of the surrounding ambient air, so The current ambient temperature is used to compare with the maximum temperature of the ambient air to determine whether there is anyone near the desk, so as to send the detection signal.

Therefore, the intelligent desk of the present invention can provide diversified functions, has high reliability, saves energy, optimizes the office environment, can be mass-produced and widely used, is beneficial to health, prevents waist and back pain caused by sitting for a long time, and is a great help for office workers or other people. Great convenience for those who need to sit at the desk for a long time.

Description of drawings

Fig. 1 is the schematic diagram of intelligent desk of the present invention;

2(a)-(d) are waveform diagrams of the dimming circuit of the present invention.

detailed description

Below in conjunction with accompanying drawing, specific embodiment and embodiment of the present invention will be further explained:

Fig. 1 is the schematic diagram of the intelligent desk of the present invention, and it comprises: desktop 1, the display panel 2 embedded in the desktop, the processor component (not shown) 3 embedded in desktop, side cabinet, or other suitable positions , an information collection component 4, and a communication component 5, the smart desk also includes an energy supply component 6, and the energy supply component is connected to the desk through a power cord to supply power for the smart desk.

Preferably, when not in use, the display panel 2 is placed inside the desk, and automatic control means can be used to control its lifting with buttons or touch switch keys. When in use, the display panel rises from the inside of the desktop and can be Automatically adjusts to the angle the user is used to. The display panel 2 may be a liquid crystal touch panel. It can also be a non-touch liquid crystal display panel, in which case other input devices such as a mouse and a keyboard are additionally used. It is more preferable to use a touch panel.

The liquid crystal display panel may have the following structure: CF substrate, which is formed with color filters (CF) and black matrix (BM); TFT substrate, which is formed with transparent electrode common wiring and pixel electrodes; liquid crystal, which is sealed in CF between the substrate and the TFT. There are a plurality of parallel strip-shaped transparent wirings extending along the first direction on the CF substrate, and a plurality of parallel transparent electrode common wirings extending in the second direction perpendicular to the first direction on the TFT substrate. The plurality of parallel transparent electrode common wirings are formed by adding slits to separate them in the horizontal direction, and the upper electrodes and lower electrodes of the capacitive touch panel are formed by using the overlapped parts of the band-shaped transparent wirings and the transparent electrode common wirings. Among them, it should be noted that by adding thin slits to the common wiring of the transparent electrodes to separate them in the horizontal direction, the liquid crystal display panel of the electrostatic capacitive touch panel can be realized with low cost, high reliability and long service life. It is very suitable for being applied in the computer system of the desk of the present invention. Of course, any other suitable type of liquid crystal display panel can also be used in the present invention.

The display panel can also adopt the following capacitive touch panel, which includes a CF substrate, a liquid crystal layer, and a TFT substrate with a capacitive touch sensing unit embedded in order, wherein the capacitive touch sensing unit is embedded The CF substrate includes: a first glass substrate, a capacitive touch sensing unit, a first insulating layer, a shielding layer, a color filter layer and a planarization layer arranged in sequence; the lead wires of the capacitive touch sensing unit pass through The contact holes lead out from the surface of the CF substrate and are connected to the TFT substrate through conductive gold balls. In the above capacitive touch display, the CF substrate embedded with the capacitive touch sensing unit may further include: a second insulating layer located between the shielding layer and the color filter film layer. The capacitive touch sensing unit includes: a first transparent electrode, a third insulating layer and a bridging electrode layer arranged sequentially from the first glass substrate toward the first insulating layer. The TFT substrate includes: a second glass substrate, a functional layer, a second transparent electrode, and a second guiding film layer arranged in sequence; wherein, a driver IC for controlling a capacitive touch sensing unit is arranged on the second glass substrate . An FPC for controlling the rotation of liquid crystal molecules in the liquid crystal layer is arranged on the second glass substrate, and the drive IC for controlling the capacitive touch sensing unit is located on the FPC. In the capacitive touch display, the capacitive touch sensing unit on it is embedded on the CF substrate. Therefore, this structure can save a glass substrate compared with other structures in which the capacitive touch screen is located above the display. Therefore, the capacitive touch display is lighter and thinner, making the display easier to be embedded in the desktop. In the capacitive touch display, since the capacitive touch screen sensing unit is formed on the CF substrate in an embedded manner, that is: the capacitive touch sensing unit and the color filter layer on the CF substrate are on the same glass substrate on the same surface of the same glass substrate, which reduces defects such as scratches on the surface of the same glass substrate during the production process, so the yield rate is high; and there is no need to add an additional protective layer to protect the capacitive touch sensing unit, The process flow is reduced, so, overall, the cost is greatly reduced. In this capacitive touch display, the leads of the capacitive touch sensing unit are led out of the surface of the CF substrate through the contact hole, and connected to the TFT substrate through conductive gold balls. This structure is not only light and thin, but also has a simple manufacturing process. be adopted.

The display panel can be an LED panel, preferably a touch LED panel. In the case of a touch-sensitive LED panel, a touch-control LED device with a bottom gate structure can be used, including: a thin film transistor formed on one side of the substrate, a touch signal feedback layer is formed on the thin film transistor, and a touch signal feedback layer is formed on the thin film transistor. A light emitting substrate is arranged on the touch signal feedback layer, the anode layer of the light emitting substrate is connected to the drain of the thin film transistor, and a touch signal receiving layer is formed on the other side of the substrate. In this touch-sensitive LED device, a touch signal receiving layer is formed on one side of the substrate, a touch signal feedback layer is formed on the thin film transistor, and the anode layer of the light-emitting substrate is connected to the drain of the thin film transistor to realize the touch signal feedback layer. It is arranged inside the thin film transistor to realize the integration of the touch screen and the LED display part, which greatly reduces the weight and thickness of the display itself. Furthermore, the LED device is preferably an organic LED device.

The information collection component 4 can collect relevant information such as surrounding environment information, and send the collected information to the processor component via the communication component, and the processor component processes the information, and then, for example, through the communication component, the processor component will Instructions generated from the received information are sent to corresponding components to perform corresponding operations.

The information collection component 4 includes, for example, a sensor, which may be a pressure sensor, a temperature sensor, a humidity sensor, and the like. For example, the sensor transmits the sensed information to the processor component via the communication component, and the processor processes the information to form corresponding instruction information, and then transmits the instruction information to the corresponding control system to perform control.

In the case of using a pressure sensor, the pressure sensor can be embedded in an appropriate position on the desktop, and the pressure information such as the pressure and pressure changes generated by the human hand placed on the desktop can be sensed by the pressure sensor set in the desktop. For example, the pressure information is transmitted to the processor component through the communication component, and the processor component processes the information, and transmits the instructions generated according to the information to the relevant control system, and the control system adjusts the height of the desktop, thereby The optimum position can be realized according to the habit of the user. This adjustment can be carried out, for example, via a support rod arranged on the lower part of the table top. The information transmission between the sensor and the processor component can also be carried out by other means such as bluetooth, for example. Of course, the user can also choose not to use the automatic adjustment function through the touch panel or other input devices, and set the height of the desktop by himself.

The pressure sensor can also be arranged on the corresponding seat, and the information on the pressure of the person on the seat and the change over time can be fed back to the separate control system or the processor component through the pressure sensor, and the separate control system or processor component can After the information is processed, the support rod arranged on the base is controlled to rise or fall, so that the best matching position between the seat and the table can be realized. Preferably, the processor component processes the pressure information on the seat, and then adjusts the height of the seat, because the processor component can integrate and process the pressure information on the desktop and the pressure information on the seat, which is beneficial to achieve the best effect. In addition, more preferably, the desktop and the seat can be set at a certain angle through the connection between the desktop and the support rod, and the connection between the seat and the support rod is also set at a certain angle, and when it is sensed that the user has not changed for a long time In the case of a sitting posture, the processor component can change the state of the desktop and the seat through the tilt angle, thereby forcibly changing the user’s sitting posture. The forced change of the user’s sitting posture can be carried out slowly over time, and then slowly change back to In the original state, this continuous change at a certain time interval can solve the problem of low back pain and easy fatigue caused by the user not changing the sitting position for a long time, and can relieve fatigue to the greatest extent even when the user is working for a long time. Make users more comfortable.

In the case of using a temperature sensor, the temperature sensor can be embedded in the desk top of the office. Since the human body usually performs daily work at the desk, the temperature detected near the desk is basically equal to the temperature sensed by the human body. Users can set the ambient temperature in the system according to their own needs, and then when the temperature detected by the temperature sensor is low When the set temperature is at or higher than the set temperature, the processor component can issue instructions to the temperature adjustment components such as air conditioners according to the temperature information to increase or decrease the ambient temperature, so as to reach the optimum temperature required by the user and enhance the use the comfort of the patient.

Specifically, the temperature sensor can be a transmissive photoelectric temperature sensor, which is a low-cost temperature sensor, based on the principle of thin-film interference filter or birefringent crystal interference, and belongs to the optical fiber temperature sensor. It has the following characteristics: (1) Measure the temperature by measuring the shift of the wavelength corresponding to the same interference intensity after passing through the thin film filter or crystal, without using a complicated interference fringe analysis device, and at the same time avoiding the problems caused by the light intensity detection method. (2) Thin-film filters can be used instead of birefringent crystals to detect temperature sensors based on interference; (3) There are no special requirements for birefringent crystals, and different wavelengths can be allowed to pass through birefringent The phase difference of two orthogonally polarized light behind the crystal varies with the temperature. The temperature sensor includes a passive temperature sensitive probe, a transmission optical fiber and a photoelectric signal processing unit. The passive temperature-sensitive probe includes two types: transmission type and reflection type. The transmission-type passive temperature-sensitive probe is formed by sequentially connecting a collimator, a temperature-sensitive element and a collimator; the temperature-sensitive element can be a F-P (F-P) interference film filter, or can be made of a polarizer , a birefringent crystal and a polarizer, wherein the polarizing direction of the polarizer and the polarizing direction of the polarizer must not be parallel or perpendicular to the optical axis direction of the birefringent crystal, and the angle between the polarizing direction and the polarizing direction Between 45° and 75°, for example, the angle of 50° is used; the signal light emitted by the light source of the photoelectric signal processing unit passes through the transmission fiber and enters the collimator, and the collimated signal light enters the temperature sensitive element and is affected by the temperature. Modulation, the modulated signal light enters the detector of the photoelectric processing unit through the collimator and transmission fiber, and the temperature is measured by measuring the shift of the wavelength corresponding to the same interference intensity after passing through the temperature sensitive element. The reflective passive temperature sensitive unit is formed by sequentially connecting a collimator, a temperature sensitive unit and a reflector; the temperature sensitive unit can be a F-P (F-P) interference film filter, or can be composed of a polarizer and a reflector. Composed of birefringent crystals, where the polarizing direction of the polarizer must not be parallel or perpendicular to the optical axis of the birefringent crystal; the signal light emitted by the light source of the photoelectric signal processing unit passes through the optical directional transmission device, and then transmits to the transmission fiber. After entering the collimator, the collimated light is incident on the temperature sensitive element and is modulated by the temperature signal. The modulated signal light is reflected by the reflector, passes through the temperature sensitive element, collimator and transmission fiber again, and enters the light directional transmission device. The detector that reaches the photoelectric processing unit measures the temperature by measuring the shift of the wavelength corresponding to the same interference intensity after passing through the temperature sensitive element.

The operation method of the above temperature sensor is: when the temperature sensitive element adopts a thin-film filter, because the thin-film filter will expand and contract with temperature and the refractive index of the material will also change with temperature, resulting in light exiting from the two surfaces of the thin-film filter. The optical path difference of the two beams of light will change with the temperature, so that the wavelength corresponding to the same interference intensity is modulated by the temperature. When the temperature sensitive element is composed of a polarizer, a birefringent crystal and a polarizer, the light of a specific polarization direction remains after the light source passes through the polarizer, and then the light of a specific polarization direction is decomposed into two components by the birefringent crystal. A beam of orthogonally polarized light, when the two beams pass through a birefringent crystal, a certain optical path difference is generated due to different refractive indices, and after passing through the analyzer again, only components with the same polarization direction with a specific optical path difference remain The two beams of light interfere with each other. Here, the refractive index of the birefringent crystal changes with the change of temperature. At the same time, the birefringent crystal has a certain thermal expansion coefficient, and its length changes with the change of temperature, so that the light of the two beams of light The path difference changes with temperature, resulting in the wavelength corresponding to the same interference intensity being modulated by temperature after passing through the analyzer. In the actual product application, in order to facilitate the measurement, the wavelength corresponding to the maximum interference intensity is selected; at this time, if the light source is a wide-spectrum light source, it is shown that the peak wavelength after passing through the temperature sensitive element shifts with the temperature change, by determining the transmission The actual temperature value can be calculated by the offset of the peak wavelength after the temperature sensitive element; The change is offset, and the actual temperature value is calculated by measuring the offset of this wavelength. Since the temperature sensor uses the wavelength shift as a reference signal for temperature measurement, as long as the position of the wavelength corresponding to the same interference intensity changes with temperature, the temperature information can be obtained accurately, so the influence of polarization noise can be stripped. The temperature sensitive unit has no moving parts and is a purely passive structure. Even if the temperature and humidity of the external environment are not good, its reliability will not be affected, and the service life is long. When applied in the desk system of the present invention, the effect is excellent.

The temperature sensor adopted in the desk of the present invention can also be a capacitive micro-machined ultrasonic sensor (CMUT). This temperature sensor based on the CMUT has high sensitivity and good performance. Its overall structure is composed of two parts: a temperature-sensitive film and a base. ; Wherein the temperature-sensitive film is composed of a high thermal expansion coefficient metal layer and a silicon dioxide film from top to bottom, and the high thermal expansion coefficient metal layer is used as the upper electrode of the temperature sensor at the same time, and its material can be aluminum, gold, etc., preferably aluminum material, thickness The size should guarantee its good conductivity and temperature sensitivity. Among them, the silicon dioxide film is used as a vibration film and a component of a temperature sensitive element, and its size is designed according to the required temperature detection sensitivity. The upper middle part of the base is provided with a cavity and a silicon dioxide pillar surrounding the cavity, the lower middle part of the base is provided with a lower electrode and a stress relief groove surrounding the lower electrode, and the surface of the lower electrode and the stress relief groove is covered with nitrogen The silicon nitride layer is provided with a lower electrode electrical connection window on the silicon nitride layer. The top of the stress relief groove is on the same plane as the upper side of the lower electrode to separate the lower electrode from the base in the lateral direction. The shape of the high thermal expansion coefficient metal layer is the same as that of the cavity, and the lateral dimension (dimension parallel to the surface of the metal layer) is smaller than or equal to the lateral dimension of the cavity. The working principle of the CMUT-based temperature sensor is to detect the temperature by changing the electrical parameters of the CMUT caused by the sensitivity of the temperature-sensitive film to the temperature change. At a certain reference temperature (such as 0°C), a certain DC bias and harmonic voltage is applied between the two electrodes of the CMUT to make it resonate in the non-collapse working mode. At this time, the electrical parameters of the CMUT include the electrical impedance , inductance, resistance, capacitance, etc. and the corresponding temperature values (such as 0°C) are used as reference values for electrical parameters and temperature respectively. At this time, high-precision thermometers and impedance analyzers are used to calibrate the reference temperature and electrical parameters. When the temperature changes, the stress state of the temperature-sensitive film and the shape of the film will change accordingly, which will cause the resonant frequency of the CMUT and the electrical parameters at the time of resonance to change. Changing the harmonic voltage frequency will make the CMUT resonate again, and the electrical impedance parameter will be the smallest at the time of resonance. , use an impedance analyzer to measure the electrical parameters at this time, and the temperature measurement can be realized through the corresponding relationship between the relative change value of the electrical parameter and the temperature change value. The structural parameters can be, for example: metal layer diameter 50-70 μm, metal layer thickness 2-7 μm, silicon dioxide film thickness 1-3 μm, cavity height 0.7-1 μm, cavity diameter 20-25 μm. With the temperature sensor, the temperature range that can be sensed is approximately in the range of -10-80° C., and the specific sensing temperature range is determined by the structure and material parameters of the temperature sensor. The sensitivity to temperature is determined by the ratio of the change in impedance parameters (impedance, capacitance, resistance) to the change in temperature.

In the case of the humidity sensor, its configuration and operation are similar to those of the temperature sensor, and those skilled in the art can easily implement related operations based on their common knowledge in the field, and details will not be repeated here. The following example is given for the structure of the humidity sensor itself.

The humidity sensor adopts porous ceramic alumina, which includes a high-purity aluminum sheet, a porous alumina ceramic film, a conductive electrode and a copper wire; the high-purity aluminum sheet is used as an intermediate layer, and the outer surface of the aluminum sheet is covered with a porous alumina ceramic film The upper and lower surfaces of the porous alumina ceramic membrane are respectively plated with conductive films as conductive electrodes, and the copper wires are connected to the conductive electrodes through silver paste; the porous alumina ceramic membrane is a moisture-sensitive medium layer. The purity of the high-purity aluminum sheet is preferably 99.99%, and it is preferably in α phase, and the thickness of the porous alumina ceramic film is preferably 20-23 μm. The thickness of the conductive electrode is preferably 30-35 nm, and the material of the conductive electrode is preferably copper. It is preferable to use transient self-feedback micro-arc oxidation method to prepare porous alumina ceramic membrane on the surface of high-purity aluminum sheet, and obtain porous alumina ceramic membrane. The ceramic membrane is very dense, with hardness ≥ 1200Hv, salt spray resistance time ≥ 1800h, and surface roughness Ra0 .10μm～0.3μm. Therefore, the obtained humidity sensor has uniform pores, stable microstructure, sufficient phase transition, and good stability, response speed, and sensitivity.

The information collection component 3 may also include a brightness collection block. The brightness collection block may include a photosensitive circuit, and the photosensitive circuit includes a collection sensor for receiving light. The acquisition sensor collects the brightness in the user's working area or the preset area, and then converts the brightness information into a digital signal and sends it to the processor component. The processor component can compare the collected signal with the reference brightness preset by the user. comparison, and further, the processor component can adjust the lighting power of the lighting system according to the comparison result, so as to realize the best lighting brightness for users.

The brightness can be adjusted through a dimming circuit, which mainly includes a zero-crossing detection circuit, a microprocessor, and a semiconductor switching element. In addition, an external control signal S1 can also be set to be sent to the microprocessor. The microprocessor may be a one-time programmable microcontroller. The semiconductor switching element can adopt a bidirectional controllable switch, such as an AC silicon controlled rectifier. One end of the switching element is connected to one wire of the AC power supply, and the other end is connected to the other wire of the AC power supply via the lighting load. The zero-crossing detection circuit converts the AC voltage sine wave of the AC power supply AC, as shown in Figure 2(a), into a symmetrical square wave including a low and a high voltage value, as shown in Figure 2(b), wherein, When the AC voltage sine wave crosses zero, the symmetrical square wave rises from a low voltage value to a high voltage value, or falls from a high voltage value to a low voltage value. That is, the edges of the symmetrical square wave correspond in timing to the zero crossings of the AC voltage sine wave. The symmetrical square wave is sent to a pin of the microcontroller which is dedicated to detecting an interrupt signal. In addition, the writing program of the micro-controller is firstly set, and it is determined that when the voltage value of the pin changes, it represents the interrupt signal. The writing program of the microcontroller includes a plurality of different external control loops, the external control loop includes a delay pulse subroutine, and the microcontroller executes the delay pulse subroutine to generate a zero-crossing delay pulse. Wherein, the delay pulse subroutine includes a delay cycle, and the microcontroller is interrupted at the time point of the edge of the symmetrical square wave. The microcontroller executes a delay loop to generate a zero-crossing delay pulse a length of time after the edge of the symmetrical square wave. The writing program of the microcontroller may also include a certain timing cycle, and the microcontroller executes the timing cycle to generate timing lighting at a certain stage of brightness. The time of this timing lighting can extend from tens of seconds to several minutes or several hours. Therefore, when the pin of the microcontroller detects a change in the voltage value (that is, at the edge time point of the symmetrical square wave), the microcontroller executes the internal delay pulse subroutine, and then uses the time point when the interrupt occurs as a reference point to perform a delay cycle, thereby generating a zero-crossing delay pulse relative to the zero-crossing point of the AC voltage sine wave, as shown in Figure 2(c). The zero-crossing delay pulse is output from another control pin of the microcontroller and transmitted to the semiconductor switch element as a voltage signal for triggering the semiconductor switch element. Wherein, the zero-crossing delayed pulse lags behind the edge of the symmetrical square wave in time sequence by a time gap tD. The lag time gap tD is set by the delay cycle of the delay pulse subroutine of the microcontroller, so the lag time gap tD can be designed to properly control the conduction period ton of the semiconductor switching element. Figure 2(d) is the voltage waveform occurring between the two ends of the light source load. The brightness of the light source load is proportional to the average power transmitted through the semiconductor switching element during the positive and negative half cycle ton of the AC power supply AC.

Generally, the microcontroller can be coupled to a mechanical bounce switch or a touch panel to obtain the external control signal S1, and set the effective external control signal S1 to zero voltage, that is, a short-term ground signal. When the microcontroller detects the effective external control signal S1, it enters the external control cycle to be selected, and executes the delay pulse subroutine according to the interrupt signal, and then generates the zero-crossing delay pulse as shown in Figure 2(c). In addition, the microcontroller can also enter a loop to stop generating the zero-crossing delay pulse shown in item (c), thereby turning off the semiconductor switching element. In addition, using semiconductor switching elements to control the transmission of alternating current power must consider the limitations caused by the type of light source load. Basically, fluorescent lamps and AC light-emitting diode modules have a minimum voltage required for current conduction, or threshold voltage, and the voltage applied to the load must be greater than the threshold voltage value before the load can conduct current. Therefore, the threshold voltage of the light source load limits the time point at which the trigger voltage of the semiconductor switching element occurs. When the trigger voltage is applied to the semiconductor switching element, the instantaneous AC voltage value must be greater than the threshold voltage of the light source load, that is, the lagging time difference tD of the zero-crossing delay pulse relative to the zero-crossing point of the AC power supply AC must be greater than one corresponding to the threshold voltage. The time interval is used to determine that the semiconductor switching element can be stably triggered during the positive and negative half cycles of the alternating current power source AC. This limitation can be solved by designing the delay pulse subroutine of the internal program of the microcontroller. Therefore, in this embodiment, the microcontroller only needs to change the delay pulse subroutine, without changing the components of the external circuit, that is, the required zero-crossing delay pulse can be generated to apply to the lighting control of various types of light source loads .

The ambient brightness can also be supplemented as necessary by an additional auxiliary lighting system.

In addition, the information collection component can also be equipped with an infrared sensor to detect whether there is anyone near the desk. If no one is detected, the lighting system can be turned off within a specified time, and only the low-brightness indicator lights and devices are kept. The status lights and so on are in working state. If there are people around, for example, people within 3 meters around the desk, the lighting system will be turned on immediately. In this way, it can play a role in saving lighting energy. Of course, the user can also pre-set to turn off the infrared sensor and keep the lighting system on or off. The specific structure of the infrared sensor can include an ambient temperature measuring device and an infrared signal temperature sensor, the ambient temperature measuring device is used to measure the current ambient temperature, and the infrared signal temperature sensor is used to measure the maximum temperature of the surrounding ambient air temperature, the current ambient temperature is used to compare with the maximum temperature of the surrounding ambient air to determine whether there are people near the desk, so as to send the detection signal.

In addition, the energy supply component can be a power supply system of multiple power sources, specifically including: a first power source, a first power rectifier circuit, and an energy storage circuit, and the input terminals of the first power source, the first power rectifier circuit, and the energy storage circuit are sequentially connected, the output end of the energy storage circuit provides the load with working power, and the first power supply is used to provide the AC power supply, which is rectified into direct current by the first power supply rectifier circuit, and outputs the first direct current; it is characterized in that it also includes a second power supply, a second The output voltage control circuit of the second power supply, the unidirectional conductive circuit, the output voltage feedback circuit, the second power supply, the output voltage control circuit of the second power supply, the unidirectional conductive circuit and the input end of the energy storage circuit are connected in sequence; the output end of the energy storage circuit is connected with the input end of the energy storage circuit The input end of the output voltage feedback circuit is connected, the output end of the output voltage feedback circuit is connected to the control end of the second power supply output voltage control circuit, the second power supply is used to provide the second type of power supply, and the second power supply output voltage control circuit is in the Under the control of the feedback voltage output by the output voltage feedback circuit, the second direct current is output to the energy storage circuit, the output characteristics of the first power supply and the rectification circuit are voltage source type, and the output characteristics of the second power supply output voltage control circuit are current source type . The first power rectification circuit may also be a combined circuit of passive PFC correction and rectification circuits. The second type of power source is a solar cell, a wind power source, or a chemical battery. Preset the output voltage target value of the output voltage control circuit, and the preset target value is greater than the maximum value of the AC amplitude voltage of the first power supply. If the load power is less than or equal to the maximum power value that the second power supply can provide, the second power supply The output voltage control circuit outputs the target value voltage, the first power supply rectifier circuit enters the reverse bias state, and stops supplying power to the energy storage circuit; if the load power is greater than the maximum power value that the second power supply can provide, the second power supply output voltage control The circuit tracks the maximum power point of the second power supply, outputs the maximum power of the second power supply, the output voltage of the output voltage control circuit is lower than the voltage of the first direct current, the rectifier circuit of the first power supply exits the reverse bias state, and supplies power to the energy storage circuit Power supply: the lower the output voltage of the output voltage control circuit is, the larger the conduction phase angle of the first power rectification circuit is, and the more power the first power supply supplements. The energy supply component can be used to supply power only to the smart desk, or can also supply power to multiple types of loads controlled by the smart desk, such as temperature adjustment, humidity adjustment, and lighting. The multi-power supply system can accept the feed of the first power supply at the load end, but the second power supply such as solar power, wind power, etc. will not feed the first power supply, but only feed power to the load end, which can reduce the impact on the common power supply. That is, the dependence on the first power supply, and the convenience of being connected to the grid on the DC side with the common power supply, which can be instantly supplemented according to the load power needs, and the power of the common grid can be used. The above-mentioned general power source is, for example, a city power grid.

The processor component of the present invention is the core of the whole system and plays the role of overall coordination. It can be mainly used to process the received data, store important data in the database, analyze the data, send useful information to the client for display, or accept processing commands from the client, etc. The processor component may include a first component and a second component, the first component is used to process the information collected by the information collection component and is responsible for sending relevant instructions or other relevant information to the corresponding control component according to the information, and the second component is dedicated to the user’s office . In this way, when the second component is closed, the first component can still run, which saves energy and ensures a comfortable office environment for users. The first component includes a digital signal processing board, which may include an analog-to-digital conversion module, a micro-processing module, a USB bus module, a data processing module and the like. Alternatively, the processor component may be formed from a single integral component.

The communication component of the present invention can realize the interactive communication between the display panel 2, the processor component 3, the information collection component 4 and related control components, and the information sending end periodically or event-triggered will need to send real-time data packets through broadcasting or other appropriate ways, the information receiving end receives the data packet, obtains real-time data, and stores it in the corresponding receiving buffer.

Although several specific examples of the present invention have been described above, those skilled in the art can make various combinations, additions, deletions and changes.

Claims (6)

1. An intelligent desk, characterized in that it includes a desktop, a display panel embedded in the desktop, a processor assembly embedded in the interior of the desktop, a side cabinet, or other appropriate positions, an information collection component, and a communication component, the intelligent desk It also includes an energy supply component, which is connected to the desk through a power cord to provide power for the smart desk, wherein, The display panel embedded in the desktop is a touch LED panel; The information collection component includes: a pressure sensor, a temperature sensor, a humidity sensor, and/or an infrared sensor, and also includes a brightness collection block; the energy supply component includes a power supply system of multiple power sources, and the power supply system includes: a first power supply , the first power supply rectifier circuit, the energy storage circuit, the input terminals of the first power supply, the first power supply rectification circuit and the energy storage circuit are connected in sequence, and the output terminal of the energy storage circuit provides the working power for the load; and the second power supply, the second The power supply output voltage control circuit, the unidirectional conduction circuit, and the output voltage feedback circuit, the second power supply, the second power supply output voltage control circuit, the unidirectional conduction circuit and the input end of the energy storage circuit are sequentially connected, and the output end of the energy storage circuit is connected to the input end of the energy storage circuit. The input terminal of the output voltage feedback circuit is connected, the output terminal of the output voltage feedback circuit is connected with the control terminal of the second power supply output voltage control circuit, and the second power supply output voltage control circuit is under the control of the feedback voltage output by the output voltage feedback circuit Outputting the second direct current to the energy storage circuit, wherein the touch LED panel includes: a thin film transistor formed on one side of the substrate, a touch signal feedback layer is formed on the thin film transistor, and a touch signal feedback layer is set on the touch signal feedback layer A light-emitting substrate, the anode layer of the light-emitting substrate is connected to the drain of the thin film transistor, and a touch signal receiving layer is formed on the other side of the substrate; Wherein the information collection component includes a brightness collection block, the brightness collection block includes a photosensitive circuit, and the photosensitive circuit includes a collection sensor for receiving light. The brightness is collected, and then the brightness information is converted into a digital signal and sent to the processor component. The processor component compares the collected signal with the user’s preset reference brightness, and the processor component can adjust the lighting according to the comparison result. The lighting power of the system is adjusted to achieve the best lighting brightness for the user; the pressure sensor is set on the corresponding seat, and the information on the pressure of the person on the seat and the change over time is fed back to the individual through the pressure sensor. The control system or feeds back to the processor component. After the independent control system or processor component processes the information, it controls the support rod set on the base to rise or fall, so as to realize the best matching position between the seat and the desktop. The chair is set to incline at a certain angle through the junction of the desktop and the support rod, and the junction of the chair seat and the support rod is also set to incline at a certain angle. When it senses that the user has not changed the sitting posture for a long time, the processor component passes this Tilt the angle to change the state of the desktop and the seat, and then force the user to change the sitting posture; wherein the temperature sensor is embedded in the desktop, and consists of two parts: the temperature-sensitive film and the base; the temperature-sensitive film consists of a high The thermal expansion coefficient metal layer is composed of a silicon dioxide film. The high thermal expansion coefficient metal layer is also used as the upper electrode of the temperature sensor. The silicon dioxide film is used as a vibration film and a component of the temperature sensitive element. The upper middle part of the base is provided with The cavity and the silica pillar surrounding the cavity, wherein the metal layer diameter is 50-70 μm, the metal layer thickness is 2-7 μm, the silicon dioxide film thickness is 1-3 μm, the cavity height is 0.7-1 μm, and the cavity diameter 20-25μm. 2. The smart desk according to claim 1, wherein the touch screen of the touch-controlled LED panel and the LED display part are integrally formed to reduce the weight and thickness of the display itself. 3. The intelligent desk as claimed in claim 1, wherein the pressure sensor is embedded in an appropriate position on the desktop, through which the pressure sensor senses the pressure information including the pressure magnitude and the pressure change situation generated on the desktop, and the The pressure information is transmitted to the processor component, which processes the pressure information, and transmits the instructions generated according to the pressure information to the relevant control system, and the control system adjusts the height of the desktop. 4. The intelligent desk according to claim 1, wherein the temperature sensor is embedded in the desktop, which is a transmission type photoelectric temperature sensor, comprising a passive temperature sensitive probe, a transmission optical fiber and a photoelectric signal processing unit. 5. The intelligent desk according to claim 1, wherein the humidity sensor is embedded into the desktop, and the humidity sensor adopts porous ceramic alumina, which includes high-purity aluminum sheet, porous alumina ceramic film, conductive electrode and copper wire. 6. The intelligent desk as claimed in claim 1, wherein the infrared sensor comprises an ambient temperature measuring device and an infrared signal temperature sensor, the ambient temperature measuring device is used to measure the current ambient temperature, and the infrared signal The temperature sensor is used to measure the maximum temperature of the ambient air, and the current ambient temperature is used to compare with the maximum temperature of the ambient air to determine whether there are people near the desk, thereby sending out a detection signal.