CN114273372A - Control system of intelligent fume chamber - Google Patents
Control system of intelligent fume chamber Download PDFInfo
- Publication number
- CN114273372A CN114273372A CN202111374057.4A CN202111374057A CN114273372A CN 114273372 A CN114273372 A CN 114273372A CN 202111374057 A CN202111374057 A CN 202111374057A CN 114273372 A CN114273372 A CN 114273372A
- Authority
- CN
- China
- Prior art keywords
- temperature
- fume hood
- module
- time
- real
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Ventilation (AREA)
Abstract
The invention provides a control system of an intelligent fume hood, which comprises a detection module, a control module and a control module, wherein the detection module is used for detecting whether personnel exist in an experiment operation area; the collection module is used for starting internal temperature measurement of the fume hood when personnel exist in the experimental operation area, carrying out interval collection based on preset time and determining the temperature in the fume hood; the control module is used for judging whether the temperature in the fume hood is greater than a maximum temperature threshold value or not; and when the temperature in the fume hood is greater than the maximum temperature threshold value, adjusting a vent valve of the fume hood to cool. The invention has the beneficial effects that: when having personnel through detecting detection area, through the situation of opening of control ventilation valve and then according to real-time temperature, adjust the ventilation valve, and then realize wind-force and adjust, effectively reduce the temperature of fume chamber.
Description
Technical Field
The invention relates to the technical field of laboratory fume hoods, in particular to a control system of an intelligent fume hood.
Background
At present, traditional fume chamber control system, generally adopt infrared monitoring, its infrared ray generally all is settled at the top of fume chamber, through the personnel condition in the response monitoring zone, automatic air volume control and the control of moving the door of carrying on, nevertheless because the coverage of response region is great, probably there are a lot of maloperations under the response region of this response mode, for example, be not in order to do the experiment when the experimenter, and when coincidentally standing in the response region, can be because of sensing the experimenter for partial device automatic work in its fume chamber, because the maloperation, lead to the loss that increases the cost of machine to a certain extent. Furthermore, it is likely that an object is found in the sensing area, but it is not determined whether the sensing area is a person or not.
Disclosure of Invention
The invention provides a control system of an intelligent fume hood, which is used for solving the problems that the coverage area of a sensing area is large, a lot of misoperation possibly exists in the sensing area of the sensing mode, and whether the sensing area is uncertain or not is the situation of personnel existence.
A control system for an intelligent fumehood, comprising:
the detection module is used for detecting whether personnel exist in an experiment operation area;
the collection module is used for starting internal temperature measurement of the fume hood when personnel exist in the experimental operation area, carrying out interval collection based on preset time and determining the temperature in the fume hood;
the control module is used for judging whether the temperature in the fume hood is greater than a maximum temperature threshold value or not; wherein the content of the first and second substances,
and when the temperature in the fume hood is greater than the maximum temperature threshold value, adjusting a fume valve of the fume hood to cool.
As an embodiment of the present invention: the system further comprises:
the wind adjusting calculation module: the air conditioner is used for calculating the difference value between the internal temperature of the fume hood and the maximum temperature threshold when the internal temperature of the fume hood is larger than the maximum temperature threshold, and determining the opening angle of the vent valve based on the difference value;
the air quantity detection module: the real-time air quantity detection device is used for detecting the real-time air quantity when the ventilation valve is opened according to the opening angle;
an area detection module: the detection device is used for detecting the opening area of the detection movable door of the fume hood and determining the area threshold value for detecting the opening of the movable door;
air quantity standard setting module: the air quantity standard threshold is determined according to the area threshold for detecting the opening of the movable door;
a cooling judgment module: and the air quantity control module is used for adjusting the opening angle of the ventilation valve according to whether the corresponding real-time air quantity is within the air quantity standard threshold value or not and when the real-time air quantity is not within the standard threshold value.
As an embodiment of the present invention:
the system further comprises:
a gear division module: the device is used for dividing the ventilation valve into three stages according to an initial angle and a maximum angle; wherein the content of the first and second substances,
the third gear comprises: a reset gear, a micro-speed adjusting gear and a high-speed ventilation gear;
a first state judgment module: the system comprises a detection module, a reset module and a control module, wherein the detection module is used for acquiring real-time state information of the fume hood when detecting that a user starts the fume hood, and judging whether the fume hood is in a reset gear or not according to the real-time state information of the fume hood;
a second state judgment module: the ventilation valve is started according to the difference value, opening parameters of the ventilation valve are obtained, and whether the ventilation valve is in an adjusting gear or not is judged;
a third state judgment module: and the temperature rise rate is used for acquiring the temperature rise rate of the fume hood, and when the temperature rise rate exceeds a preset threshold value, the fume valve is directly adjusted to be a high-speed ventilation gear.
As an embodiment of the present invention: the detection module comprises:
the area setting module: the device is used for presetting an experiment operation area and carrying out area detection through detection equipment on the front side of the fume hood; wherein the content of the first and second substances,
the detection apparatus includes: an induction apparatus and a camera apparatus;
the identification device includes: infrared induction equipment, radar induction equipment and ultrasonic induction equipment;
the induction unit: the system comprises a detection device, a detection device and a control device, wherein the detection device is used for detecting whether an object to be identified exists in an experiment operation area or not through induction equipment and outputting the real-time position of the object to be identified;
an array marking unit: the system comprises a real-time position acquisition module, a real-time position acquisition module and a real-time position acquisition module, wherein the real-time position acquisition module is used for acquiring a camera image of the experimental operation area, dividing the camera image into area distribution arrays and calibrating the real-time position through the area distribution arrays;
an identification unit: and the system is used for setting an identification frame according to the real-time position, determining the outline of the object to be identified according to the identification frame and determining whether personnel exist.
As an embodiment of the present invention: the identification unit includes:
an anchor point determination unit: the anchor point region of the object to be identified on the camera picture is determined according to the real-time position;
a contour determination unit: the contour to be recognized corresponding to the anchor point area is constructed according to the anchor point area;
a matching unit: the system is used for matching the contour to be recognized with a preset object contour database and determining the contour type of the contour to be recognized;
a person identification unit: and the detection experiment operation area is used for judging whether the contour to be identified is a human body contour or not according to the contour type, and determining that personnel exist in the detection experiment operation area when the contour to be identified is determined to be the human body contour.
As an embodiment of the present invention: the identification unit determines the outline of the object to be identified, and comprises the following steps:
step S1: graying the shot picture to generate a grayscale image;
step S2: processing the gray level image based on differential operation and an autocorrelation matrix to determine angular points and edge points;
step S3: determining a frame of the object to be identified according to the angular points;
step S4: according to the edge points and the frame, coordinate point connection is carried out in the frame to form the outline of the object to be identified and form identification information;
step S5: and judging the existence of personnel in the detection experiment operation area according to the identification information.
As an embodiment of the present invention: the acquisition module comprises:
an instruction generation unit: the temperature measuring device is used for generating a corresponding temperature measuring instruction when personnel exist in the experiment operation area;
an instruction execution unit: the temperature measuring device is used for receiving the temperature measuring instruction and starting internal temperature measurement;
an interval acquisition unit: the temperature measuring device is used for determining temperature measuring points between each time interval and the next time interval according to the preset time interval, collecting real-time temperature according to the temperature measuring points, generating a time-temperature curve graph and determining the temperature in the fume hood; wherein the content of the first and second substances,
the time interval includes: a barrier-free time interval and a barrier time interval;
barrier interval time setting unit: the system comprises a hidden Markov model, a fault acquisition module, a fault analysis module and a fault analysis module, wherein the hidden Markov model is used for acquiring historical fault information of a fume hood, determining influence factors of different faults of the fume hood, determining occurrence time of the different faults according to the influence factors, and taking the occurrence time of the different faults as a fault time interval;
barrier interval time setting unit: the method is used for determining the most common faults of the fume hood, and the occurrence time of the most common faults is taken as the fault-free time interval.
As an embodiment of the present invention: the acquisition module further comprises:
a time sequence unit: generating a time sequence according to the interval time;
a processing unit: the time sequence is used for carrying out difference stabilization processing on the real-time temperature in the fume hood according to the time sequence to determine temperature information;
a modeling unit: the temperature regulation and control model is constructed according to the temperature information and the equipment information in the fume hood;
different temperature identification unit: the temperature fluctuation graph is constructed according to the temperature information of the fume hood, and the temperature fluctuation graph is given to determine the temperature change rule;
a fault recognition unit: the fault detection module is used for determining the same type of faults of the same type of temperature change rules according to the temperature change rules;
an acquisition mode determination unit: and the fault detection module is used for determining a fault factor according to the same type of fault, giving the fault factor and determining a time interval.
As an embodiment of the present invention: the control module includes:
a judging module: the temperature control device is used for comparing the internal temperature of the fume hood with the maximum temperature threshold value and judging whether the internal temperature of the fume hood is greater than the maximum temperature threshold value or not;
an information generation unit: the temperature information generation device is used for generating temperature information when the temperature in the fume hood is larger than a maximum temperature threshold value;
an adjusting unit: the temperature control device is used for generating corresponding adjusting information according to the temperature information and generating a cooling instruction according to the adjusting information;
a cooling unit: and controlling the ventilation valve to cool according to the cooling instruction.
As an embodiment of the present invention: the system further comprises:
a first adjustment quality determination module: the device is used for obtaining the ventilation valve adjusting angle and the average value and the variance of the transformation parameters of the temperature in the ventilation cabinet within the preset detection time, and judging the cooling quality;
a second adjustment quality determination module: the device is used for obtaining the average value and variance of output parameters of the adjusting angle of the ventilation valve and the air quantity of the ventilation valve and judging the adjusting quality of the ventilation cabinet;
a third adjustment quality determination module: the system is used for carrying out comprehensive weighting calculation on the adjusting quality and the cooling quality to determine the temperature control quality of the fume hood; wherein the content of the first and second substances,
and the comprehensive weighting calculation is obtained by correcting after iterative calculation according to the difference between the control estimated value and the actual value of the historical fume hood.
The invention has the beneficial effects that: when having personnel through detecting detection area, through the situation of opening of control ventilation valve and then according to real-time temperature, adjust the ventilation valve, and then realize wind-force and adjust, effectively reduce the temperature of fume chamber.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a system diagram of a control system of an intelligent fume hood according to an embodiment of the present invention;
fig. 2 is a main structure diagram of a control system of an intelligent fume hood in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1 and fig. 2, the present invention is a control system for an intelligent fume hood, comprising:
the detection module is used for detecting whether personnel exist in an experiment operation area;
the collection module is used for starting internal temperature measurement of the fume hood when personnel exist in the experimental operation area, carrying out interval collection based on preset time and determining the temperature in the fume hood;
the control module is used for judging whether the temperature in the fume hood is greater than a maximum temperature threshold value or not; wherein the content of the first and second substances,
and when the temperature in the fume hood is greater than the maximum temperature threshold value, adjusting a fume valve of the fume hood to cool.
The principle of the technical scheme is as follows: the invention combines various detection devices, and a detection module formed by the detection module detects and judges whether people exist or not, for example, the detection module can be formed by double infrared sensors and camera equipment, namely, the double infrared sensors receive infrared rays generated by the radiation of experimenters, namely, the double infrared sensors can convert the variation of the infrared radiation generated by the activity of the experimenters into corresponding induction signals, at the moment, an induction area formed by the double infrared rays at least covers an object to be identified appearing in the area range in the front lower part of a fume hood, so that the central angle of a fan-shaped formed by the induction area projected on a horizontal plane is not less than 120 degrees, and the detection module has the advantages of being convenient to obtain more accurate monitoring results through more comprehensive coverage; then, the corresponding personnel are determined by identifying the picture of the sensing area through the camera equipment.
The infrared sensor includes, but is not limited to, a pyroelectric infrared sensor, a thermopile, a quantum type infrared sensor, and the like. The image pickup apparatus includes a 270 ° angle-invariant image pickup apparatus and an angle-variable image pickup apparatus. The infrared sensor converts the variation of incident infrared rays into an electrical signal, and the thermopile and the quantum-type infrared sensor can convert the absolute value of incident infrared rays into an electrical signal. When the invention detects a person, the invention indicates that the person starts to do an experiment, and further controls the starting of the fume hood, and the simulation temperature is overhigh. Opening the fume hood; closing the fume hood according to a fume hood sliding door closing instruction; according to the air quantity increasing instruction of the fume hood, increasing the air quantity; according to the air quantity reducing instruction of the fume hood, the air quantity is reduced.
The technical scheme has the beneficial effects that: when having personnel through detecting detection area, through the situation of opening of control ventilation valve and then according to real-time temperature, adjust the ventilation valve, and then realize wind-force and adjust, effectively reduce the temperature of fume chamber.
As an embodiment of the present invention: the system further comprises:
the wind adjusting calculation module: the air conditioner is used for calculating the difference value between the internal temperature of the fume hood and the maximum temperature threshold when the internal temperature of the fume hood is larger than the maximum temperature threshold, and determining the opening angle of the vent valve based on the difference value;
the air quantity detection module: the real-time air quantity detection device is used for detecting the real-time air quantity when the ventilation valve is opened according to the opening angle;
an area detection module: the detection device is used for detecting the opening area of the detection movable door of the fume hood and determining the area threshold value for detecting the opening of the movable door;
air quantity standard setting module: the air quantity standard threshold is determined according to the area threshold for detecting the opening of the movable door;
a cooling judgment module: and the air quantity control module is used for judging whether the corresponding real-time air quantity is within the air quantity standard threshold value or not under the opening angle of the ventilation valve, and adjusting the opening angle when the real-time air quantity is not within the air quantity standard threshold value.
The principle of the technical scheme is as follows: the peak regulation calculation module is used for calculating a temperature difference value, the difference value is a difference value between an actual temperature and a temperature threshold value, and the difference value also exists in a certain area, so that whether the ventilation is quickly adjusted and the angle of the ventilation valve is quickly increased or the ventilation valve is adjusted in a fine adjustment mode according to the area of the difference value, and the fine adjustment angle is determined. The air volume calculation is to determine the air volume of ventilation according to the real-time opening angle of the ventilation valve. The air quantity is maximum at 180 degrees, and no air exists at 0 degree. The area detection module is used for determining an air volume standard threshold value through a detection movable door of the fume hood. In the process, the fume hood is a cabinet for performing experiments, the movable door is detected to determine the door inside the cabinet for partitioning the experiment area when performing the experiments, the movable door is also called a compartment door for partitioning and dividing the experiment area, and the compartment door is isolated to determine the volume of the experiment area, wherein the volume has the area opened by the movable door to determine the required air volume, so that the standard threshold of the air volume can be determined based on the area. The cooling judgment module is used for judging whether the required air volume is within the required air volume threshold value or not, and adjusting if not.
The beneficial effects of the above technical scheme are that: compared with the prior art, the invention changes the opening form of the ventilation valve, adjusts in an angle mode, detects the movable door based on the area, then determines the required air volume, and sets the threshold value for adjustment, so that firstly, energy conservation can be carried out, and secondly, because of the threshold value, insufficient wind power can not be caused.
As an embodiment of the present invention: the system further comprises:
a gear division module: the device is used for dividing the ventilation valve into three stages according to an initial angle and a maximum angle; wherein the content of the first and second substances,
the third gear comprises: a reset gear, a micro-speed adjusting gear and a high-speed ventilation gear;
a first state judgment module: the system comprises a detection module, a reset module and a control module, wherein the detection module is used for acquiring real-time state information of the fume hood when detecting that a user starts the fume hood, and judging whether the fume hood is in a reset gear or not according to the real-time state information of the fume hood;
a second state judgment module: the device is used for starting the ventilation valve according to the difference value, acquiring an opening parameter of the ventilation valve and judging whether the ventilation valve is in a fine adjustment gear or not;
a third state judgment module: and the temperature rise rate is used for acquiring the temperature rise rate of the fume hood, and when the temperature rise rate exceeds a preset threshold value, the fume valve is directly adjusted to be a high-speed ventilation gear.
The principle of the technical scheme is as follows: the invention can divide gears, and different gears determine that the gears are in different states. This is a typical innovation of the invention in the fume hood field, which firstly serves to enable quick navigation to the gear position of the fume hood for the manager. Secondly, the prior art fume hood is directly the direct wind control of the vent valve, and there is a problem at this time, when the vent valve needs to be adjusted, the vent valve is a general control adjusting device, which is driven to adjust by a motor or a motor when controlling the opening angle of the valve, or is an automatic switch, if the vent valve is a motor or a motor, the speed adjusting range which needs to be controlled by the motor is extremely large, that is, the power range of the motor is extremely large, but in the prior art, any motor cannot have a power threshold which is determined by the number of turns of a copper wire on an internal rotating core, under the condition of a certain number of turns, the adjusting range cannot be changed arbitrarily, if the vent valve is driven to rotate by a motor or a motor, and the input parameter determines that fine adjustment and quick adjustment cannot be realized, this has resulted in the fact that the vent valve of an existing control system cannot be fine-tuned, only fast adjustments based on normal and ramp-up rates, also due to mechanical plant characteristics. The invention provides three gears, and different gears are adjusted through different control systems, so that conditions are provided for fine adjustment and high-speed adjustment. The first gear is a reset gear, which is used to verify whether the gear is in the initial position. The second gear is a fine adjustment gear, which is realized on the basis of the difference, because only the difference is determined (difference in temperature, fine adjustment can be realized, calculation based on temperature and opening angle is mainly performed). The third gear is a high-speed ventilation gear, and the cooling ventilation opening is quickly opened as long as the rising rate exceeds a preset threshold value, so that the ventilation opening is suitable for various ventilated environments, and the quick reaching of the adjustable range capable of being finely adjusted can be realized. In the implementation process, the high-speed ventilation gear is adjusted in advance, and then the fine adjustment gear is adjusted to enable the high-speed ventilation gear to be in the optimal ventilation state.
The beneficial effects of the above technical scheme are that: according to the invention, through the division of three gears, high-speed ventilation adjustment can be realized, the initial state can be determined, fine adjustment can be realized after high-speed ventilation adjustment, the ventilation and cooling device not only adapts to different temperature conditions, but also can perform ventilation and cooling by using optimal wind power, and multiple adjustment and accurate adjustment are realized. And the energy-saving effect is better.
As an embodiment of the present invention: the cooling judgment module for adjusting the angle comprises the following steps:
step 1: determining, from the vent valve, a slope of a vent valve angle plate:
wherein, Q (x)1，y1) An end coordinate function representing the vent door; z (x)2，y2) A coordinate function representing the starting point of the ventilation door; d represents the opening distance of the ventilation door; f represents the adjusting constant of the ventilation door; t represents the regulating coefficient of the vent valve of the vent door; x represents the slope of the vent door;
step 2: according to the opening angle of the vent valve and the slope of the vent door, determining the real-time air volume of the vent door:
wherein S represents the area of the air outlet when the ventilation door is opened to the maximum opening degree; θ represents an opening angle; delta represents an air volume conversion coefficient; wtRepresenting the real-time air volume;
and step 3: determining an opening angle according to the real-time air volume and a standard threshold value:
wherein, WminRepresents the lowest value of the standard threshold; wmaxRepresents the highest value of the standard threshold; beta is a1Representing the adjusting angle when the real-time air quantity is lower than the lowest value of the standard threshold; beta is a2Indicating the adjustment angle at which the real-time air volume is above the highest value of the standard threshold.
The principle of the technical scheme is as follows: during the process of adjusting the ventilation valve, the slope of the angle plate of the ventilation valve is calculated firstly, and the slope corresponds to the slopeOpening to an angle. Formula Q (x)1，y1)*d-Z(x2，y2) D, subtracting the product of the starting point coordinate function and the opening distance from the product of the end point coordinate function and the opening distance, and obtaining a calculation function of the opening, wherein the calculation function mainly represents the opening range. According to the principle of the slope, the slope is the tangent value of an included angle between a straight line and the positive half axis direction of the horizontal axis of a plane rectangular coordinate system. The invention is also applicable to this law, but the invention is an angle plate of a ventilation valve, which is equivalent to a form that an oval plate rotates when the angle is changed, and the opening distance of the angle plate is an arc-shaped curved surface. When the coordinate function of the present invention is multiplied by the opening distance, the result is an opening coefficient, Q (x)1，y1)*d-Z(x2，y2) D represents the opening coefficient adjusted during this adjustment; and corresponding Q (x)1，y1)*T-Z(x2，y2) T represents the regulatory factor of the process of shuffling this regulation. The ratio of the adjustment coefficient to the opening coefficient is equivalent to the tangent value. However, since the present invention has no adjustment at the time of calculation, the adjustment coefficient is 0, that is, Q (x)1，y1)*T-Z(x2，y2) T is 0, but the denominator cannot be 0, so the present invention uses tuning constants. In the step 2, the real-time air volume is calculated, in the process, the invention utilizes the principle of an inverse trigonometric function, a definition domain which is obtained by multiplying the arctg theta by the slope, namely the current opening angle under the inverse trigonometric function, is removed through multiplying the area of the air outlet when the maximum opening degree of the air outlet by the air volume conversion coefficient, namely the maximum air volume output parameter, the definition domain is multiplied by the slope, and the definition domain is multiplied by the slope, so that the real-time air volume is specified to be in the interval of the definition domain, and because each definition domain corresponds to a value domain, the value domain of the real-time air volume of the spherical ventilation door can be finally obtained. The reason is that the value range is formed because when the ventilating valve is opened, the wind force drives the angle plate of the ventilating valve to make a certain deviation, namely, the deviation exists, and the value range exists because of the deviation. The standard threshold value is the minimum of the real-time air volumeThe value and the maximum value, therefore, the opening angle is the angle opened in real time during the adjustment, but the invention finally aims to adjust when the real-time air quantity is lower than the lowest value of the standard threshold value and when the real-time air quantity is higher than the highest value of the standard threshold value. In this case, fine adjustment and adjustment techniques are implemented.
As an embodiment of the present invention: the detection module comprises:
the area setting module: the device is used for presetting an experiment operation area and carrying out area detection through detection equipment on the front side of the fume hood; wherein the content of the first and second substances,
the detection apparatus includes: an induction apparatus and a camera apparatus;
the identification device includes: infrared induction equipment, radar induction equipment and ultrasonic induction equipment;
the induction unit: the system comprises a detection device, a detection device and a control device, wherein the detection device is used for detecting whether an object to be identified exists in an experiment operation area or not through induction equipment and outputting the real-time position of the object to be identified;
an array marking unit: the system comprises a real-time position acquisition module, a real-time position acquisition module and a real-time position acquisition module, wherein the real-time position acquisition module is used for acquiring a camera image of the experimental operation area, dividing the camera image into area distribution arrays and calibrating the real-time position through the area distribution arrays;
an identification unit: and the system is used for setting an identification frame according to the real-time position, determining the outline of the object to be identified according to the identification frame and determining whether personnel exist.
The principle of the technical scheme is as follows: the area setting module of the invention needs to set the parts of the area of the experimental operation in the fume hood firstly, and because the internal detection door, namely the separation door exists, the area of the experimental operation is set in advance, which is very convenient compared with the invention. Certainly, the area outside the fume hood is also included, as the invention has the characteristic that the sensing area is arranged outside, whether the monitoring area is a person or not is detected based on the detection equipment when the experiment is carried out, many experiments can not lead the monitoring area to have the person, and if the experiments are dangerous gas or radioactive experiments, the monitoring area can not have the person.
The induction equipment and the camera equipment mainly judge the places where the experimental equipment is placed so as to automatically separate and mark units in an array mode.
The beneficial effects of the above technical scheme are that: the invention can realize the rapid determination of the experimental area, and can also carry out comprehensive detection on the monitoring area, thereby preventing the interference of people or the danger to people during the experiment.
As an embodiment of the present invention: the identification unit includes:
an anchor point determination unit: the anchor point region of the object to be identified on the camera picture is determined according to the real-time position;
a contour determination unit: the contour to be recognized corresponding to the anchor point area is constructed according to the anchor point area;
a matching unit: the system is used for matching the contour to be recognized with a preset object contour database and determining the contour type of the contour to be recognized;
a person identification unit: and the detection experiment operation area is used for judging whether the contour to be identified is a human body contour or not according to the contour type, and determining that personnel exist in the detection experiment operation area when the contour to be identified is determined to be the human body contour.
The principle of the technical scheme is as follows: the anchor point is a named anchor and is also a locator, and the function of the anchor point is to realize the identification of the outline through the anchor point when a person or an animal or other objects exist in a monitored area, and the person or other objects nearby can be determined through the identification of the outline. Because the direct human body comparison is also a recognition method, compared with the direct correlation recognition, the method is simpler by a contour recognition technology, does not need data training, establishes a training model, and better accords with the technical idea of cost saving.
The beneficial effects of the above technical scheme are that: compared with a characteristic recognition mode, the method can judge whether a person exists or not more simply without data training, because the method belongs to an experimental area, the zhi can judge whether the person exists or not through the human body outline, and possibly, the recognition error is caused by the existence of a human body model, but because the method is an experimental area, the situation can be basically ignored.
As an embodiment of the present invention: the identification unit determines the outline of the object to be identified, and comprises the following steps:
step S1: graying the shot picture to generate a grayscale image;
step S2: processing the gray level image based on differential operation and an autocorrelation matrix to determine angular points and edge points;
step S3: determining a frame of the object to be identified according to the angular points;
step S4: according to the edge points and the frame, coordinate point connection is carried out in the frame to form the outline of the object to be identified and form identification information;
step S5: and judging the existence of personnel in the detection experiment operation area according to the identification information.
The principle of the technical scheme is as follows: in the process of contour recognition, the photographed image is converted into a gray image, the gray image is processed through differential operation and an autocorrelation matrix after the gray image is converted, the differential operation is to integrate different pixel points in the gray image through a differential technology to generate a differential model, the differential model can determine edge points and corner points through the autocorrelation matrix processing, the edge points are points of contour edges, and the corner points are the corner points because the corner points are the points of the corner angles regardless of the contour of a human body or an object. The frame is determined according to the angular points, because the angular points are determined based on the edges and corners, when people exist, the frame completely wraps the human body, and then the outline of the human body is determined through the edge points, which is equivalent to twice recognition. Compared with the traditional contour recognition, the method has the advantages that the recognition is more accurate, because the determination of the human body contour recognition is not carried out by all the edge points, but the frame is determined first, and the human body contour is determined. And finally, determining whether the experimental operation area is a person or not according to the human body contour.
The invention has the beneficial effects that: compared with the prior art, the method adds a process of setting the frame when determining whether the human exists or not, because the traditional method of directly determining the human body contour through the edge points has technical errors, and if one or more coordinates are incorrect, calculation errors exist. The human body contour is relatively more accurately determined after the border of is firstly passed through the corner points, and the human body contour is formed in the border limited area, so that if the coordinate of the edge point is wrong, the human body contour can be timely found, which is a beneficial effect that the prior art does not have.
As an embodiment of the present invention: the acquisition module comprises:
an instruction generation unit: the temperature measuring device is used for generating a corresponding temperature measuring instruction when personnel exist in the experiment operation area;
an instruction execution unit: the temperature measuring device is used for receiving the temperature measuring instruction and starting internal temperature measurement;
an interval acquisition unit: the temperature measuring device is used for determining temperature measuring points between each time interval and the next time interval according to the preset time interval, collecting real-time temperature according to the temperature measuring points, generating a time-temperature curve graph and determining the temperature in the fume hood; wherein the content of the first and second substances,
the time interval includes: a barrier-free time interval and a barrier time interval;
barrier interval time setting unit: the system comprises a hidden Markov model, a fault acquisition module, a fault analysis module and a fault analysis module, wherein the hidden Markov model is used for acquiring historical fault information of a fume hood, determining influence factors of different faults of the fume hood, determining occurrence time of the different faults according to the influence factors, and taking the occurrence time of the different faults as a fault time interval; the Markov model is a statistical model, and the function in the invention is to realize the statistics of the fault information and the marking of the fault information.
Barrier interval time setting unit: the method is used for determining the most common faults of the fume hood, and the occurrence time of the most common faults is taken as the fault-free time interval.
The principle and the beneficial effects of the technical scheme are as follows: the acquisition module of the invention can generate a temperature measurement instruction when a person is in an experimental operation area, thereby realizing internal temperature measurement. The experiment operation area is not equal to the monitoring area, and the experiment operation area is occupied, so that the experiment is performed by people, the temperature measurement is started, the temperature measurement is performed in the mode, the temperature measurement is also performed through manual remote control, the temperature in the fume hood is detected in the mode of temperature measurement at intervals, and then a temperature curve is generated to determine the content of the fume hood. A clear time interval is a time interval without an obstruction factor. The time interval of an obstacle represents a time interval of an obstacle factor, such as a power outage in the hood for a period of time, or no temperature information detected in the hood, etc. And detecting when there is a fault according to the event of the fault occurrence. The reason for the present invention hit setting both time intervals is that in the case of an obstacle, the temperature must be abnormal, and in the absence of an abnormality, the temperature should be stable in the region. Therefore, two completely different detection data can be obtained by detecting the temperature at two different time intervals, and the data can be used as a reference when similar conditions are faced and used as an adjustment reference and a maintenance reference of the fume hood for later experiments.
As an embodiment of the present invention: the acquisition module further comprises:
a time sequence unit: generating a time sequence according to the interval time;
a processing unit: the time sequence is used for carrying out difference stabilization processing on the real-time temperature in the fume hood according to the time sequence to determine temperature information;
a modeling unit: the temperature regulation and control model is constructed according to the temperature information and the equipment information in the fume hood;
different temperature identification unit: the temperature fluctuation graph is constructed according to the temperature information of the fume hood, and the temperature fluctuation graph is given to determine the temperature change rule;
a fault recognition unit: the fault detection module is used for determining the same type of faults of the same type of temperature change rules according to the temperature change rules;
an acquisition mode determination unit: and the fault detection module is used for determining a fault factor according to the same type of fault, giving the fault factor and determining a time interval.
The principle of the technical scheme is as follows: when the acquisition module determines the time interval, each interval time generates a time sequence because the invention needs to generate a temperature fluctuation graph, the time sequence is a parameter of the temperature fluctuation graph and a parameter of differential smoothing processing, namely, discrete states of temperatures at different time points are determined in a differential mode, and the temperatures are continuously increased or decreased states according to the principle and are more suitable for linear functions. The modeling unit is used for expanding a temperature regulation and control model according to the temperature information and the regulation capacity of internal equipment, namely internal temperature control equipment. The different temperature identification unit is used for identifying the temperature with large fluctuation and high and low fluctuation, determining the change rule of the temperature, and then judging whether the influence is caused by the experiment or the fault of the equipment. Furthermore, when the equipment has a fault, a fault factor of the fault is collected, the fault factor is the cause of the fault according to the fault factor, then the time interval type is selected, and only the fault time interval can be selected when the fault exists; but the clear time interval may be selected when clear.
The beneficial effects of the above technical scheme are that: according to the invention, a temperature regulation and control model can be established according to the change of temperature, the fluctuation information of the temperature is determined, and finally, the corresponding fault factor is determined according to the waveform information of the temperature, so that the fault time interval is determined.
As an embodiment of the present invention: the control module includes:
a judging module: the temperature control device is used for comparing the internal temperature of the fume hood with the maximum temperature threshold value and judging whether the internal temperature of the fume hood is greater than the maximum temperature threshold value or not;
an information generation unit: the temperature information generation device is used for generating temperature information when the temperature in the fume hood is larger than a maximum temperature threshold value;
an adjusting unit: the temperature control device is used for generating corresponding adjusting information according to the temperature information and generating a cooling instruction according to the adjusting information;
a cooling unit: and controlling the ventilation valve to cool according to the cooling instruction.
The principle of the technical scheme is as follows: the control module of the invention mainly aims to control cooling, and in the process, the invention carries out comparison and judgment through the temperature threshold value and the temperature in the fume hood, and finally can judge how to carry out temperature adjustment according to the change of the temperature, thereby generating a corresponding cooling instruction and realizing cooling through the cooling instruction.
The beneficial effects of the above technical scheme are that: the invention can realize the removal of the temperature information according to the temperature in the fume hood and the maximum temperature threshold value, thereby regulating and controlling the change of the temperature.
In one embodiment of the invention: the system further comprises:
a first adjustment quality determination module: the device is used for obtaining the ventilation valve adjusting angle and the average value and the variance of the transformation parameters of the temperature in the ventilation cabinet within the preset detection time, and judging the cooling quality;
a second adjustment quality determination module: the device is used for obtaining the average value and variance of output parameters of the adjusting angle of the ventilation valve and the air quantity of the ventilation valve and judging the adjusting quality of the ventilation cabinet;
a third adjustment quality determination module: the system is used for carrying out comprehensive weighting calculation on the adjusting quality and the cooling quality to determine the temperature control quality of the fume hood; wherein the content of the first and second substances,
and the comprehensive weighting calculation is obtained by correcting after iterative calculation according to the difference between the control estimated value and the actual value of the historical fume hood.
The principle of the technical scheme is as follows: when temperature adjustment is performed, since temperature adjustment is performed, the quality of temperature adjustment also needs to be judged, and the cooling quality, the adjustment quality, and the temperature control quality of temperature adjustment are judged.
In this decision process:
the cooling quality is judged by the mean value and the variance of the transformation parameters of the ventilation valve adjusting angle and the temperature in the ventilation cabinet within the preset detection time, namely the change condition of the temperature, the cooling efficiency and the cooling speed of the temperature are mainly judged by cooling judgment, and the mean value and the variance can quickly determine the cooling efficiency and the cooling speed.
The adjusting quality is mainly the average value and variance of output parameters of the adjusting angle of the ventilation valve and the air quantity of the ventilation valve, and the average value and variance of the output parameters. The variance determines the expected value, which is the most important factor for adjusting the quality, and the expected value can be regarded as ideal regulation data.
In the process of judging the temperature control quality, the invention is based on the weighted calculation of the adjusting quality and the cooling quality, because the higher the weight value is, the higher the precision is, and the temperature control quality is the temperature control precision. The weighting calculation is also a more consistent way.
The beneficial effects of the above technical scheme are that: according to the invention, the overall temperature regulation capacity of the fume hood can be evaluated through three-party evaluation of the cooling quality, the regulation quality and the temperature control quality, so that the temperature control equipment and capacity of the fume hood can be optimized.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A control system of an intelligent fume hood, comprising:
a detection module: the device is used for detecting whether personnel exist in an experimental operation area;
an acquisition module: the temperature measurement device is used for starting internal temperature measurement of the fume hood when personnel exist in an experimental operation area, carrying out interval collection based on preset time and determining the temperature in the fume hood;
a control module: the temperature control device is used for judging whether the temperature in the fume hood is greater than a maximum temperature threshold value or not; wherein the content of the first and second substances,
and when the temperature in the fume hood is greater than the maximum temperature threshold value, adjusting a fume valve of the fume hood to cool.
2. The control system for an intelligent fumehood according to claim 1, said system further comprising:
the wind adjusting calculation module: the air conditioner is used for calculating the difference value between the internal temperature of the fume hood and the maximum temperature threshold when the internal temperature of the fume hood is larger than the maximum temperature threshold, and determining the opening angle of the vent valve based on the difference value;
the air quantity detection module: the real-time air quantity detection device is used for detecting the real-time air quantity when the ventilation valve is opened according to the opening angle;
an area detection module: the detection device is used for detecting the opening area of the detection movable door of the fume hood and determining the area threshold value for detecting the opening of the movable door;
air quantity standard setting module: the air quantity standard threshold is determined according to the area threshold for detecting the opening of the movable door;
a cooling judgment module: and the air quantity control module is used for judging whether the corresponding real-time air quantity is within the air quantity standard threshold value or not under the opening angle of the ventilation valve and carrying out angle adjustment when the real-time air quantity is not within the air quantity standard threshold value.
3. A control system for an intelligent fumehood according to claim 2, said system further comprising:
a gear division module: the device is used for dividing the ventilation valve into three stages according to an initial angle and a maximum angle; wherein the content of the first and second substances,
the third gear comprises: a reset gear, a micro-speed adjusting gear and a high-speed ventilation gear;
a first state judgment module: the system comprises a detection module, a reset module and a control module, wherein the detection module is used for acquiring real-time state information of the fume hood when detecting that a user starts the fume hood, and judging whether the fume hood is in a reset gear or not according to the real-time state information of the fume hood;
a second state judgment module: the ventilation valve is started according to the difference value, opening parameters of the ventilation valve are obtained, and whether the ventilation valve is in an adjusting gear or not is judged;
a third state judgment module: and the temperature rise rate is used for acquiring the temperature rise rate of the fume hood, and when the temperature rise rate exceeds a preset threshold value, the fume valve is directly adjusted to be a high-speed ventilation gear.
4. The control system of an intelligent fumehood according to claim 1 wherein said detection module comprises:
the area setting module: the device is used for presetting an experiment operation area and carrying out area detection through detection equipment on the front side of the fume hood; wherein the content of the first and second substances,
the detection apparatus includes: an induction apparatus and a camera apparatus;
the identification device includes: infrared induction equipment, radar induction equipment and ultrasonic induction equipment;
the induction unit: the system comprises a detection device, a detection device and a control device, wherein the detection device is used for detecting whether an object to be identified exists in an experiment operation area or not through induction equipment and outputting the real-time position of the object to be identified;
an array marking unit: the system comprises a real-time position acquisition module, a real-time position acquisition module and a real-time position acquisition module, wherein the real-time position acquisition module is used for acquiring a camera image of the experimental operation area, dividing the camera image into area distribution arrays and calibrating the real-time position through the area distribution arrays;
an identification unit: and the system is used for setting an identification frame according to the real-time position, determining the outline of the object to be identified according to the identification frame and determining whether personnel exist.
5. The control system of an intelligent fumehood according to claim 4 wherein said identification unit comprises:
an anchor point determination unit: the anchor point region of the object to be identified on the camera picture is determined according to the real-time position;
a contour determination unit: the contour to be recognized corresponding to the anchor point area is constructed according to the anchor point area;
a matching unit: the system is used for matching the contour to be recognized with a preset object contour database and determining the contour type of the contour to be recognized;
a person identification unit: and the detection experiment operation area is used for judging whether the contour to be identified is a human body contour or not according to the contour type, and determining that personnel exist in the detection experiment operation area when the contour to be identified is determined to be the human body contour.
6. The control system of an intelligent fumehood according to claim 4 wherein said identification unit, determining the profile of the object to be identified, comprises the steps of:
step S1: graying the shot picture to generate a grayscale image;
step S2: processing the gray level image based on differential operation and an autocorrelation matrix to determine angular points and edge points;
step S3: determining a frame of the object to be identified according to the angular points;
step S4: according to the edge points and the frame, coordinate point connection is carried out in the frame to form the outline of the object to be identified and form identification information;
step S5: and judging whether personnel exist in the test operation area or not according to the identification information.
7. The control system of an intelligent fumehood according to claim 1, wherein said acquisition module comprises:
an instruction generation unit: the temperature measuring device is used for generating a corresponding temperature measuring instruction when personnel exist in the experiment operation area;
an instruction execution unit: the temperature measuring device is used for receiving the temperature measuring instruction and starting internal temperature measurement;
an interval acquisition unit: the temperature measuring device is used for determining temperature measuring points between each time interval and the next time interval according to the preset time interval, collecting real-time temperature according to the temperature measuring points, generating a time-temperature curve graph and determining the temperature in the fume hood; wherein the content of the first and second substances,
the time interval includes: a barrier-free time interval and a barrier time interval;
barrier interval time setting unit: the system comprises a hidden Markov model, a fault acquisition module, a fault analysis module and a fault analysis module, wherein the hidden Markov model is used for acquiring historical fault information of a fume hood, determining influence factors of different faults of the fume hood, determining occurrence time of the different faults according to the influence factors, and taking the occurrence time of the different faults as a fault time interval;
barrier-free interval time setting unit: the method is used for detecting the temperature of the fume hood according to a preset time interval in a fault-free time period, and taking each interval point of the preset time interval as a fault-free time interval.
8. The control system of an intelligent fumehood according to claim 1, wherein said collection module further comprises:
a time sequence unit: generating a time sequence according to the interval time;
a processing unit: the time sequence is used for carrying out difference stabilization processing on the real-time temperature in the fume hood according to the time sequence to determine temperature information;
a modeling unit: the temperature regulation and control model is constructed according to the temperature information and the equipment information in the fume hood;
different temperature identification unit: the temperature fluctuation graph is constructed according to the temperature information of the fume hood, and the temperature fluctuation graph is given to determine the temperature change rule;
a fault recognition unit: the fault detection module is used for determining the same type of faults of the same type of temperature change rules according to the temperature change rules;
an acquisition mode determination unit: and the fault detection module is used for determining a fault factor according to the same type of fault, giving the fault factor and determining the time interval type.
9. The control system of an intelligent fumehood according to claim 1 wherein said control module comprises:
a judging module: the temperature control device is used for comparing the internal temperature of the fume hood with the maximum temperature threshold value and judging whether the internal temperature of the fume hood is greater than the maximum temperature threshold value or not;
an information generation unit: the temperature information generation device is used for generating temperature information when the temperature in the fume hood is larger than a maximum temperature threshold value;
an adjusting unit: the temperature control device is used for generating corresponding adjusting information according to the temperature information and generating a cooling instruction according to the adjusting information;
a cooling unit: and controlling the ventilation valve to cool according to the cooling instruction.
10. The control system for an intelligent fumehood according to claim 1, said system further comprising:
a first adjustment quality determination module: the device is used for obtaining the ventilation valve adjusting angle and the average value and the variance of the transformation parameters of the temperature in the ventilation cabinet within the preset detection time, and judging the cooling quality;
a second adjustment quality determination module: the device is used for obtaining the average value and variance of output parameters of the adjusting angle of the ventilation valve and the air quantity of the ventilation valve and judging the adjusting quality of the ventilation cabinet;
a third adjustment quality determination module: the system is used for carrying out comprehensive weighting calculation on the adjusting quality and the cooling quality to determine the temperature control quality of the fume hood; wherein the content of the first and second substances,
and the comprehensive weighting calculation is obtained by correcting after iterative calculation according to the difference between the control estimated value and the actual value of the historical fume hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374057.4A CN114273372B (en) | 2021-11-19 | 2021-11-19 | Control system of intelligent fume hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374057.4A CN114273372B (en) | 2021-11-19 | 2021-11-19 | Control system of intelligent fume hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114273372A true CN114273372A (en) | 2022-04-05 |
| CN114273372B CN114273372B (en) | 2022-11-08 |
Family
ID=80869476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111374057.4A Active CN114273372B (en) | 2021-11-19 | 2021-11-19 | Control system of intelligent fume hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114273372B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684468A (en) * | 2022-04-18 | 2022-07-01 | 徐州工程学院 | Cold chain logistics transportation equipment and monitoring system thereof |
| CN116449898A (en) * | 2023-06-20 | 2023-07-18 | 江苏中盟电气设备有限公司 | Remote temperature and humidity control system for switch cabinet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014057940A (en) * | 2012-09-19 | 2014-04-03 | Azbil Corp | Person detection sensor fault determination method and device of fume hood |
| CN108038423A (en) * | 2017-11-22 | 2018-05-15 | 广东数相智能科技有限公司 | The recognition methods of automotive type based on image recognition and device |
| CN108885032A (en) * | 2016-03-16 | 2018-11-23 | 住友重机械工业株式会社 | Movable stage cooling device and movable stage cooling system |
| CN111623389A (en) * | 2019-02-28 | 2020-09-04 | 宁波方太厨具有限公司 | Electric valve flow self-adaptive control method of range hood |
| CN113033316A (en) * | 2021-03-01 | 2021-06-25 | 湖南长海现代实验室设备有限公司 | Device and method for detecting and controlling show window state of fume hood |
| US20210291242A1 (en) * | 2020-03-18 | 2021-09-23 | Measured Air Performance, LLC | System and methods for controlling laboratory fume hood minimum airflow |
| CN113465071A (en) * | 2021-05-20 | 2021-10-01 | 广东天赐湾实验室装备制造有限公司 | Modularized experiment workstation and centralized laboratory |
| CN113657043A (en) * | 2021-09-23 | 2021-11-16 | 上海海事大学 | Reliability-centered maintenance method for multi-target environmental test chamber |
-
2021
- 2021-11-19 CN CN202111374057.4A patent/CN114273372B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014057940A (en) * | 2012-09-19 | 2014-04-03 | Azbil Corp | Person detection sensor fault determination method and device of fume hood |
| CN108885032A (en) * | 2016-03-16 | 2018-11-23 | 住友重机械工业株式会社 | Movable stage cooling device and movable stage cooling system |
| CN108038423A (en) * | 2017-11-22 | 2018-05-15 | 广东数相智能科技有限公司 | The recognition methods of automotive type based on image recognition and device |
| CN111623389A (en) * | 2019-02-28 | 2020-09-04 | 宁波方太厨具有限公司 | Electric valve flow self-adaptive control method of range hood |
| US20210291242A1 (en) * | 2020-03-18 | 2021-09-23 | Measured Air Performance, LLC | System and methods for controlling laboratory fume hood minimum airflow |
| CN113033316A (en) * | 2021-03-01 | 2021-06-25 | 湖南长海现代实验室设备有限公司 | Device and method for detecting and controlling show window state of fume hood |
| CN113465071A (en) * | 2021-05-20 | 2021-10-01 | 广东天赐湾实验室装备制造有限公司 | Modularized experiment workstation and centralized laboratory |
| CN113657043A (en) * | 2021-09-23 | 2021-11-16 | 上海海事大学 | Reliability-centered maintenance method for multi-target environmental test chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684468A (en) * | 2022-04-18 | 2022-07-01 | 徐州工程学院 | Cold chain logistics transportation equipment and monitoring system thereof |
| CN116449898A (en) * | 2023-06-20 | 2023-07-18 | 江苏中盟电气设备有限公司 | Remote temperature and humidity control system for switch cabinet |
| CN116449898B (en) * | 2023-06-20 | 2023-09-22 | 江苏中盟电气设备有限公司 | Remote temperature and humidity control system for switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114273372B (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114273372B (en) | Control system of intelligent fume hood | |
| CN107229930B (en) | Intelligent identification method for numerical value of pointer instrument | |
| CN109654693B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN110110629B (en) | Personnel information detection method and system for indoor environment control | |
| CN109654702B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109654701B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109654699B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109737568B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109654698B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109951936B (en) | Illumination control system and method capable of being intelligently adjusted according to different application scenes | |
| CN109654703B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| CN109654700B (en) | Control method and device for direct-blowing-preventing air conditioner, storage medium and computer equipment | |
| KR20190118337A (en) | Air-conditioner with region selective operation, cloud server, and method of operating thereof | |
| EP2060857A1 (en) | Air conditioner | |
| WO2005048200A2 (en) | Method and system for enhanced portal security through stereoscopy | |
| CN113470016A (en) | Photovoltaic cell panel abnormity detection method and device based on artificial intelligence | |
| CN109186772B (en) | Human body judgment method based on infrared detector and electric appliance | |
| CN113903058A (en) | Intelligent control system based on regional personnel identification | |
| CN115272675A (en) | Energy management system and method based on multi-sensor information fusion | |
| CN116386120A (en) | Noninductive monitoring management system | |
| CN115663999A (en) | Transformer substation online intelligent inspection system and method based on big data and deep learning | |
| He et al. | A non-intrusive approach for fault detection and diagnosis of water distribution systems based on image sensors, audio sensors and an inspection robot | |
| CN116182321B (en) | Automatic temperature regulating system of heating ventilation air conditioner based on machine learning | |
| CN113009897A (en) | Control method and device of intelligent household appliance, intelligent household appliance and storage medium | |
| CN112543272A (en) | Transformer substation inspection camera device with light regulation function and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |