CN103912960B - Air conditioning control system and control method thereof - Google Patents

Abstract

A control system and control method for an air conditioner. The control system of the air conditioner has a plurality of human body induction sensors in different directions, which are used to detect the position of a person in an all-round way at 360 degrees. Personnel carry out intelligent air supply. In addition to the common functions of general air conditioners, the air conditioner of the present invention can also choose to enter the intelligent control mode of human body induction. Try to achieve the most comfortable state of the human body and achieve the effect of human-computer interaction; the control is convenient and simple, the installation is convenient, the cost is low, and it is economical and affordable, which is the enjoyment of high-quality life.

Description

Air conditioning control system and control method thereof

technical field

The invention belongs to the technical field of human body induction application, and in particular relates to an automatic control method for swinging blades of an air conditioner.

Background technique

The switch and operation control of the air conditioner are generally operated by a remote controller, or controlled by the control buttons on the panel of the indoor unit of the air conditioner. In recent years, a new technology that uses human body induction (referred to as human sense) to control air conditioners has emerged. The principle is to use human body sensors to collect human activity signals. The electric infrared sensor uses the principle of pyroelectricity to complete the detection of dynamic heat sources. When the human body, that is, the heat source is active in its monitoring area, the sensor has a signal output; otherwise, the sensor has no signal output. Utilizing the characteristics of the sensor, the human body activity signal is transmitted to the controller CPU, and the CPU then sends the air conditioner switch command, which can complete the automatic switch of the air conditioner, which is the main function that can be realized in the existing market models. For example, the Chinese utility model patent CN201438011U announced on April 14, 2010 discloses an air conditioner controlled by human body induction. A control circuit board, a human body induction switch circuit, a temperature sensor and a clock circuit are arranged inside the indoor unit of the air conditioner. The human body induction switch circuit, temperature sensor and clock circuit transmit the signal of whether there are people in the environment, the temperature signal and the clock pulse electric signal to the control circuit in the control circuit board, thereby controlling the operating state of the air conditioner or stopping it. It can realize that the air conditioner automatically enters the normal operation state when there are people in the room. When the people in the room leave or enter the sleeping area away from the air conditioner for a period of time, the air conditioner will automatically stop running.

However, this human-inductive air-conditioning control system has the following problems: first, the human body infrared sensor probe is used for free rotation sampling, and the sampling data is small, which is easily disturbed by the external environment; adjustment requirements.

Therefore, adding a more intelligent human-sensing control method for users has become an important direction of human-sensing air conditioners.

Contents of the invention

In view of this, the object of the present invention is to propose a control system and control method for an air conditioner. In addition to using the common functions of general air conditioners, the air conditioner can also choose to enter the human body induction intelligent control mode. Induction and ground temperature sensing signals, automatically adjust the cooling/heating air outlet direction, so that the environment can reach the most comfortable state for the human body as much as possible, and achieve the effect of human-computer interaction; convenient and simple control, easy installation, low cost, economical and affordable, is high The enjoyment of quality life.

An air conditioning control system proposed according to the object of the present invention is applied to a multi-directional air outlet air conditioner. The indoor unit of the multi-directional air outlet air conditioner has a plurality of air outlets in different directions and a A plurality of swing leaves, the control system includes a sensing module, a judging module, a control module and a load module, the sensing module includes a ground temperature sensor and a plurality of human body induction sensors; the ground temperature sensor is connected to the judging module, and Input a ground temperature signal to the judging module; the judging module judges the ground temperature signal and a temperature setting condition, and outputs a temperature judging result to the control module; Different sensing directions are set on the indoor unit panel of the air conditioner, and each outputs a sensing signal to the control module; the load module includes a plurality of driving motors, corresponding to the plurality of swing leaves, respectively driving the plurality of swing The leaf swings; the control module controls the opening or standby of multiple human body induction sensors according to the temperature judgment result, and when it is turned on, calculates the human body direction according to the sensing signals of multiple human body induction sensors, and then outputs the drive signal to the load module , the load module drives the swing blade corresponding to the direction of the human body to swing according to the driving signal.

Preferably, when the air conditioner is in cooling mode and the temperature setting condition is that the ground temperature is greater than the indoor temperature plus the revised value and the set temperature of the air conditioner plus the revised value, the judgment result is yes, and the multiple human body induction sensors are in the standby state , otherwise the judgment result is no, the control module turns on multiple human body induction sensors; If the judgment result is yes, the plurality of human body induction sensors are in the standby state; otherwise, the judgment result is no, and the control module turns on the plurality of human body induction sensors; the revised value is 0°C-5°C.

Preferably, it further includes a timing module connected to the control module, when the timing circuit detects that the running time of the air conditioner is greater than a time reference value, the control module turns on the floor temperature sensor, otherwise the control module controls the floor temperature sensor to stand by.

Preferably, the time reference value is greater than or equal to 10 minutes.

Preferably, it further includes a human-sensing mode switch circuit, which controls the opening or closing of the timing module.

According to another object of the present invention, a method for air-conditioning control using the above-mentioned air-conditioning control system includes steps:

1) Turn on the power, and the multiple swing blades will supply air at the maximum angle;

2) Detect whether to enter the human sensor mode, if so, enter step 3), otherwise continue to step 1);

3) Detect whether the running time of the air conditioner is greater than a time reference value, if so, enter step 4), otherwise continue step 1);

4) Detect whether the ground temperature exceeds the temperature setting condition, if so, enter step 5) otherwise continue step 1);

5) Detect the direction of the human body, control the swing of the swing blade in this direction, and supply air at a second angle smaller than the maximum angle.

Preferably, the time reference value is greater than or equal to 10 minutes.

Preferably, when the air conditioner is in the cooling mode, the temperature setting condition is that the ground temperature is greater than the indoor temperature plus the revised value and the set temperature of the air conditioner plus the revised value; when the air conditioner is in the heating mode, the temperature setting The given condition is that the ground temperature is less than the indoor temperature minus the revised value and the set temperature of the air conditioner minus the revised value.

Preferably, the revised value is 0°C-5°C.

In addition, the present invention also proposes an air conditioner with the above-mentioned air-conditioning control system, the air conditioner is a multi-directional air outlet type air conditioner, and the multi-directional air outlet type air conditioner includes a four-way air outlet type air conditioner or a circumferential air conditioner The air outlet type air conditioner includes an indoor unit panel, the indoor unit panel includes an air outlet area and a device area, the air outlet areas are located in multiple different directions, and the air outlet areas are arranged end to end intermittently or end to end , the air outlet area includes swing leaves, and the device area includes a status display area for displaying the current working state of the air conditioner, a motor installation area, and a sensing area for installing a sensing module.

The invention relates to a control module of an air conditioner, which uses a plurality of human body induction sensors to sample in a large area all the time, and automatically adjusts the angle of the swing leaf to adjust the comfort of the environment, so that the indoor environment can reach the most comfortable state of the human body as much as possible, and achieve intelligent control The effect; the control is convenient and simple, the installation is convenient, the cost is low, the economy is affordable, and it is the enjoyment of high-quality life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the panel structural diagram of air conditioner indoor unit of the present invention;

Fig. 2 is a circuit board structure diagram of the sensing module of the present invention;

Fig. 3 is a block diagram of the air conditioning control system of the present invention;

Fig. 4 is a flow chart of the steps of the control method of the present invention.

detailed description

In the following, the technical solution of the present invention will be described in detail through a specific embodiment. Please refer to Fig. 1, Fig. 1 is a panel structure diagram of the air conditioner indoor unit of the present invention. As shown in the figure, the air conditioner is a ceiling-mounted four-way air-flow air conditioner, and its indoor unit is usually installed on the ceiling. The indoor unit panel includes air outlet areas located on four sides in different directions of east, south, west, and north and device areas located at four corners, where east, south, west, and north refer to four Disjoint directions, not east, west, north, south in the geographical sense. It should be noted that the ceiling-mounted four-sided air outlet air conditioner is only an application of the present invention. , the air outlet area just becomes the tail-connected setting, rather than the first discontinuous setting of the four-sided air outlet type air conditioner. At this time, a simple structural adaptation adjustment can be made according to the inventive concept of the present invention.

Four swing leaves 21, 22, 23, and 24 are respectively arranged on the four air outlet areas, and the four swing leaves control the direction of the air outlet by swinging downward or upward at a certain angle. By closing the four swing leaves, it plays the role of covering the gray. In the present invention, the four swing leaves 21 , 22 , 23 , 24 are individually driven by four motors, that is, the swing of any one swing leaf is not affected by other swing leaves.

The device area includes a status display area 12 for displaying the current working state of the air conditioner, motor installation areas 13 and 14, and a sensing area 11 for installing a sensing module in the present invention. The display area 12 can reflect the working state of the air conditioner through a liquid crystal screen, such as standby, start, cooling, heating, air supply, wind force, wind direction, working mode, etc. The form of working status reflects the current status of the air conditioner. The motor installation areas 13 and 14 are used to install four drive motors (not shown) that drive the four swing blades 21, 22, 23, 24, and the four drive motors are installed in the indoor unit in a two-by-two adjacent manner. on a pair of opposite corners of the panel. The sensing module of the present invention is arranged in the sensing area 11, including a plurality of human body induction sensors and a ground temperature sensor. The multiple human body induction sensors are respectively used to sense human body activity conditions in multiple different directions, and the ground temperature sensor is used to sense ground temperature. In this embodiment, the specific number of human body sensing sensors is four, which are respectively used to sense human body activity in four directions: east, south, north, and west. In other implementation manners, the number of the human body sensors can also be other numbers, as long as they are capable of 360-degree sensing.

Please refer to FIG. 2 , which is a circuit board structure diagram of the sensing module of the present invention. As shown in the figure, the four human body induction sensors 111 , 112 , 113 , and 114 are respectively arranged in different sensing directions to form a ring. In this way, 360-degree coverage of all sensing areas without dead angles can be ensured. The floor temperature sensor 115 is set in the middle of the four human body induction sensors. Of course, the floor temperature sensor 115 can also be set on other parts of the circuit board. For the arrangement shown in the figure, after being installed on the indoor unit panel, only one It is enough to open the mold and set the groove on the corner, which is beneficial to save costs.

Please refer to FIG. 3 . FIG. 3 is a block diagram of the air conditioning control system of the present invention. As shown in the figure, the air conditioning control system of the present invention adds a sensing module 110, a judging module 120, a control module 130 and a load module 140 on the basis of the original air conditioning function, and the sensing module 110 includes a ground temperature sensor 115 And four human body induction sensors 111,112,113,114. The floor temperature sensor outputs an electrical signal according to the amount of change in infrared rays received from the sensing part, and serves as an infrared sensor that senses the surface temperature of a heating element in a non-contact manner. The ground temperature sensor 115 is connected to the judging module 120 and inputs a ground temperature signal to the judging module 120 .

The judging module 120 judges the ground temperature signal and a temperature setting condition, and then outputs the judgment result to the control module 130 to output the temperature judging result, wherein the temperature setting condition is preset in the judging module 120, and the temperature setting condition Adjustments can be made according to the different working modes of the air conditioner, for example, when the air conditioner is in the cooling mode or the heating mode, the temperature setting conditions are defined with different contents. Specifically, when the air conditioner is in cooling mode, the temperature setting condition is that the floor temperature is greater than the indoor temperature + revised value and the air conditioner set temperature + revised value. At this time, if the floor temperature is in the temperature setting condition, then If the judgment result is yes, the four human body induction sensors are turned off; otherwise, the judgment result is no, and the control module turns on the four human body induction sensors; when the air conditioner is in the heating mode, the temperature setting condition is that the floor temperature is less than the indoor temperature at the same time - The revised value and the set temperature of the air conditioner - the revised value. At this time, if the ground temperature is in the temperature setting condition, the judgment result is yes, and the four human induction sensors are in the off state; otherwise, the judgment result is no, and the control module is turned on Four presence sensors. The revised values here range from 0°C to 5°C. For example, suppose the revised value is 2°C, the indoor temperature is 28°C, the set temperature of the air conditioner is 26°C, and the air conditioner is in cooling mode. If the measured floor temperature is 30°C, it means that the cooling in the entire space The effect has not yet reached the range that requires intervention. At this time, the human body induction sensor remains off, and there is no need to consider the activities of the human body in the room. When the ground temperature is lower than 30°C, it means that the refrigeration has achieved a certain effect. If the forced cooling is maintained, it will affect the comfort of the human body. At this time, the four human body induction sensors are turned on to detect the human activities in the room. After specifying the position of the person, control the swing of the swing blade in this direction so that the air conditioner does not directly send air to the human body, thus ensuring the comfort of the human body in the air-conditioned environment.

The four human body induction sensors 111 , 112 , 113 , 114 output electrical signals according to the amount of infrared variation received from the sensing parts, as an infrared sensor for sensing heat sources. The four human body induction sensors 111 , 112 , 113 , 114 are arranged on the indoor unit panel of the air conditioner according to four different sensing directions, and output sensing signals to the control module 130 respectively.

The load module 140 includes four driving motors and other output devices commonly used in air conditioners, such as fans, refrigerant circulation systems, etc. The four driving motors respectively drive the four swing blades to swing, and the four driving motors work independently , that is, it is not affected by other driving motors.

The control module 130 controls the opening or standby of the four human body induction sensors according to the temperature judgment result given by the judgment module 120. For example, when the detected ground temperature exceeds the above-mentioned temperature setting conditions, the four human body induction sensors are turned on, and the local When the surface temperature is in the temperature setting condition, the four human body induction sensors are kept in a standby state. And when it is turned on, the control module 130 calculates the direction of the human body according to the sensing signals of the four human body induction sensors, and then outputs a drive signal to the load module 140, and the load module 140 drives the swing blade corresponding to the direction of the human body to swing according to the drive signal. Make the direction of the air-conditioning wind not directly supply air to the human body, which can ensure the comfort of the human body in the air-conditioning environment.

Further, the control system further includes a timing module 150 connected to the control module 130 . This timing module 150 is mainly to provide time conditions for turning on the human body sensing mode, that is, when the start-up time of the air conditioner meets this time condition, the human body sensing mode will be activated, otherwise even if the person chooses to turn on the human body sensing mode, the entire sensing module 110 will not be activated either. Specifically, when the timing circuit detects that the running time of the air conditioner is greater than a time reference value, the control module turns on the floor temperature sensor; otherwise, the control module turns off and controls the floor temperature sensor to stand by. The time reference value here is set greater than 10 minutes in the preferred scheme, that is, when the personnel turn on the air conditioner, they select to open the human body induction mode at the same time. At this time, the ground temperature sensor and the four human body induction sensors do not work. When the power-on time exceeds 10 minutes, the control module 130 starts the sensing module 110 formally, starts with the ground temperature sensor 115 to measure the ground temperature, and gradually enters various steps of the human body sensing mode.

Further, the control module 130 also includes a human-sensing mode switch circuit 160 for controlling the timing module to be turned on or off. The human-sensing mode switch circuit 160 can be turned on or off by the remote controller of the air conditioner, that is, a control button of the human-sensing mode is set on the remote controller of the air conditioner having the human-sensing mode (i.e. the human body sensing mode) of the present invention, and the personnel You can choose whether to enable the human sensor mode through the button on the remote control. When the person turns on the human-sensing mode, the sequence module 150 works first, and then implements each program of the human-sensing mode step by step.

The human-sensing mode control method of the air conditioner of the present invention realized by using the above-mentioned control system will be introduced below.

Please refer to FIG. 4 , which is a flow chart of the steps of the control method of the present invention. As shown in the figure, the control method includes steps:

S1: Turn on the power, and the multiple swing blades will blow air at the maximum angle. At this time, the air conditioner needs to quickly intervene on the temperature in the room, especially when the personnel choose forced cooling or forced heating (that is, high-power working state), the swing blades directly send air to the ground at a large angle, which can ensure the temperature of the entire room. The space temperature in the room is uniformly cooled or heated.

S2: Detect whether to enter the human sensing mode, if so, go to step S3, otherwise continue to step S1. This step means that the personnel can choose whether to enter the human sensor mode or maintain the normal mode through the remote control of the air conditioner. In the normal mode, the air conditioner works with the original function, that is, the swing of the swing blade is mainly based on the commands output by personnel, and does not have the intelligent automatic swing function. In some occasions, personnel need the air conditioner to directly supply air to the human body. For example, after entering the room in the hot summer, the personnel need to blow cold air during this period to achieve the effect of cooling. At this time, you can choose the normal mode, and manually select the air supply angle of the swing blade of the air conditioner to supply air to the human body to make the personnel feel comfortable. When the air conditioner continues to blow the air to the human body for a period of time, and the personnel have already felt the coolness, if the air supply at a large angle is maintained, the personnel will feel uncomfortable. At this time, the human-sensing mode can be activated, and the air conditioner starts to detect parameters in all directions , and then use the test results to judge how to control the swing leaves for intelligent air supply to make the human body feel comfortable.

S3: Detect whether the running time of the air conditioner is greater than a time reference value, if so, go to step S4, otherwise continue to step S1. In this step, after the air conditioner receives the command to enter the human-sensing mode, it first controls the timing module to detect the start-up running time, and judges whether the working time of the air conditioner reaches 10 minutes. Air supply, because the space temperature in the room has not been interfered to a certain extent at this time, and the whole room is still in a state of overheating or overcooling, so the air conditioner needs to send air to the ground at a large angle. And once more than 10 minutes, the timing module will notify the control module to enter the next program of the human sensor mode.

S4: Detect whether the ground temperature exceeds the temperature setting condition, if so, proceed to step S5, otherwise continue to step S1. In this step, the control module has received an instruction from the timing module to start the system for more than 10 minutes, and starts the ground temperature sensor to detect the ground temperature. The purpose of detecting the floor temperature is to judge whether the temperature in the room has evenly reached the level of intervention. If the floor temperature is still too high or too low, it means that the temperature in the room has not reached the level of intervention from bottom to top, and continuous large-angle transmission is required. Wind, to quickly cool down or warm up the space temperature in the room as a priority. Once the ground temperature is detected to exceed the temperature setting conditions set in the judgment module, it means that the temperature in the room is low enough or high enough. Wind angle, to avoid direct air supply to the human body and cause discomfort.

Specifically, when the air conditioner is in the cooling mode, the temperature setting condition is that the ground temperature is greater than the indoor temperature plus the revised value and the set temperature of the air conditioner plus the revised value; when the air conditioner is in the heating mode, the temperature setting The given condition is that the ground temperature is less than the indoor temperature minus the revised value and the set temperature of the air conditioner minus the revised value. The revised values here range from 0°C to 5°C.

S5: Detect the direction of the human body, control the swing of the swing blade in this direction, and supply air at a second angle smaller than the maximum angle. In this step, a plurality of human body induction sensors are turned on to detect the activity status of the human body in the room. During detection, in which direction the infrared signal received by the human body induction sensor is strong, it is judged that there is human activity in this direction. At this time, the control module sends a driving signal to the drive motor used to control the swing of the pendulum in this direction, and the drive motor drives the pendulum. The leaves swing to send air at a smaller second angle, and the second angle satisfies that the wind cannot be directly blown to the human body. In this way, when people are moving in the room, the air conditioner can control the swing leaves in different directions according to the position of the people at any time to carry out intelligent air supply, so that the human body is always in a comfortable state.

To sum up, the present invention proposes a control system and control method for an air conditioner. The control system for the air conditioner has a plurality of human body induction sensors in different directions, which are used to detect the position of a person in a 360-degree omnidirectional manner. Multiple independently driven swing leaves provide intelligent air supply to personnel. In addition to the common functions of general air conditioners, the air conditioner of the present invention can also choose to enter the intelligent control mode of human body induction. Try to achieve the most comfortable state of the human body and achieve the effect of human-computer interaction; the control is convenient and simple, the installation is convenient, the cost is low, and it is economical and affordable, which is the enjoyment of high-quality life.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An air-conditioning control system, which is applied in a multi-directional air-outlet air conditioner, the indoor unit of the multi-directional air-outlet air conditioner has a plurality of air outlets in different directions and a plurality of swing leaves on the plurality of air outlets, The control system includes a sensing module, a judging module, a control module and a load module, and is characterized in that: the sensing module includes a ground temperature sensor and a plurality of human body induction sensors; the ground temperature sensor is connected to the judging module and sends The judging module inputs a ground temperature signal; the judging module judges the ground temperature signal and a temperature setting condition, and outputs a temperature judging result to the control module; The sensing direction of the air conditioner is set on the indoor unit panel of the air conditioner, and each outputs a sensing signal to the control module, which can realize 360-degree sensing; the load module includes a plurality of drive motors, corresponding to the plurality of swing leaves, Drive the plurality of swing leaves to swing respectively. In the initial state, the plurality of swing leaves supply air at the maximum angle; The sensing signal of a human body induction sensor calculates the direction of the human body, and then outputs a driving signal to the load module, and the load module drives the swing blade corresponding to the direction of the human body to swing according to the driving signal, and supplies air at a second angle smaller than the maximum angle; When the air conditioner is in the cooling mode and the temperature setting condition is that the ground temperature is greater than the indoor temperature plus the revised value and the air conditioner set temperature plus the revised value, the judgment result is yes, and the multiple human body induction sensors are in the standby state, otherwise it is judged If the result is no, the control module turns on multiple human body induction sensors; when the air conditioner is in the heating mode and the temperature setting condition is that the ground temperature is less than the indoor temperature minus the revised value and the air conditioner set temperature minus the revised value, the judgment result If yes, the plurality of human body induction sensors are in the standby state; otherwise, the judgment result is no, the control module turns on the plurality of human body induction sensors; the revised value is 0°C-5°C. 2. The air conditioning control system according to claim 1, further comprising a timing module connected to the control module, when the timing circuit detects that the running time of the air conditioner is greater than a time reference value, the control module turns on the ground temperature sensor, otherwise the control module controls the ground temperature sensor to stand by. 3. The air conditioning control system according to claim 2, wherein the time reference value is greater than or equal to 10 minutes. 4. The air-conditioning control system according to claim 2, further comprising a human-sensing mode switch circuit for controlling the opening or closing of the timing module. 5. A method for air-conditioning control using the air-conditioning control system according to any one of claims 1 to 4, characterized in that it comprises the steps of: 1) Turn on the power, and the multiple swing blades will supply air at the maximum angle; 2) Detect whether to enter the human sensor mode, if so, enter step 3), otherwise continue to step 1); 3) Detect whether the running time of the air conditioner is greater than a time reference value, if so, enter step 4), otherwise continue step 1); 4) Detect whether the ground temperature exceeds the temperature setting condition, if so, enter step 5) otherwise continue step 1); 5) Detect the direction of the human body, control the swing of the swing blade in this direction, and supply air at a second angle smaller than the maximum angle. 6. The air conditioner control method according to claim 5, wherein the time reference value is 10 minutes. 7. The air conditioning control method according to claim 5, wherein when the air conditioner is in cooling mode, the temperature setting condition is that the ground temperature is greater than the indoor temperature plus a revised value and the air conditioner set temperature plus a revised value ; When the air conditioner is in heating mode, the temperature setting condition is that the ground temperature is less than the indoor temperature minus the revised value and the set temperature of the air conditioner minus the revised value. 8. The air conditioning control method according to claim 7, characterized in that: the revised value is 0°C-5°C. 9. An air conditioner comprising the air conditioning control system according to any one of claims 1 to 4, the air conditioner is a multi-directional air outlet type air conditioner, comprising an indoor unit panel, characterized in that: the indoor unit panel includes The air outlet area and the device area, the air outlet areas are respectively located in multiple different directions, the end to end discontinuous arrangement or the end to end connection arrangement of the described air outlet area, the described air outlet area includes swing leaves, and the device area includes The status display area showing the current working status of the air conditioner, the motor installation area, and the sensing area for installing the sensing module.