CN109028284B - Automatic tracking heating system and method based on wireless positioning and rotary heating - Google Patents
Automatic tracking heating system and method based on wireless positioning and rotary heating Download PDFInfo
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- CN109028284B CN109028284B CN201810825524.2A CN201810825524A CN109028284B CN 109028284 B CN109028284 B CN 109028284B CN 201810825524 A CN201810825524 A CN 201810825524A CN 109028284 B CN109028284 B CN 109028284B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 220
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
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Abstract
The invention discloses an automatic tracking heating system and method based on wireless positioning and rotary heating, comprising a positioning device, a temperature measuring device, a coordination control system and a heating device, wherein the positioning device is used for positioning a human body and sending positioning information to the coordination control system; the temperature measuring device measures the ambient temperature of the human body and transmits temperature information to the coordination control system; the coordination control system receives the position information and the temperature information of the person, and controls one or more heating devices needing to work to move to a specified position according to the position information of the person; the temperature measuring device measures the ambient temperature of a person in real time, the temperature information is sent to the coordination control system, and the coordination control system adjusts the working power of the heating device according to the current temperature; the invention can position the personnel in the area and measure the ambient temperature around the personnel, the heating device moves to the vicinity of the personnel to directly heat the area around the personnel, and the function of automatic tracking heating is realized.
Description
Technical Field
The invention relates to the field of heating, in particular to an automatic tracking heating system and method based on wireless positioning and rotary heating.
Background
The heating system refers to a process of adjusting and controlling the temperature of air in the environment of a building or structure by manual means, and along with the progress of society and the development of technology, the heating system is widely applied to most large-scale occasions, such as schools, factories or office buildings.
With the increasing prominence of energy problems, energy conservation and use are particularly necessary, but the existing heating system such as an air conditioning system heats the whole area, for example, an air conditioner in a factory or an air conditioner in a large mall, and the heating or cooling is the heating or cooling of the whole factory area or the mall area, and the heating process is slow, long in heating time and high in energy consumption, even if a small number of people in the area can heat the whole area, even if no people exist, the heating system can be completely closed for a long time, and a great amount of waste of resources is easily caused.
The existing heating system does not have the function of performing targeted local temperature control on a single body or a small number of targets in a large area, so the research on the direction can greatly reduce the energy consumption of the heating system in the large area, and has very important significance on the continuous development of energy.
Disclosure of Invention
The invention aims to solve the problems of low heating speed, long heating time and high energy consumption of the conventional heating system such as an air conditioning system which heats the whole area, and provides an automatic tracking heating system and method based on wireless positioning and rotary heating.
The invention realizes the purpose through the following technical scheme: an automatic tracking system based on wireless positioning and rotary heating comprises a positioning device, a temperature measuring device, a coordination control system and a heating device, wherein the positioning device is used for positioning a human body and sending positioning information to the coordination control system; the temperature measuring device measures the ambient temperature of the human body and transmits temperature information to the coordination control system; the coordination control system receives the position information and the temperature information of the person, and controls one or more heating devices needing to work to move to a specified position according to the position information of the person; the temperature measuring device measures the ambient temperature of a person in real time, the temperature information is sent to the coordination control system, and the coordination control system adjusts the working power of the heating device according to the current temperature;
the positioning device is a wireless local area network formed by wireless access points, and positions the accessed mobile equipment by adopting a mode of combining an empirical test and a signal propagation model on the basis and the premise of the position information of the wireless access points; after the user handheld terminal enters the range covered by the positioning device, the RSSI and the AP address sent by the user of each handheld terminal around are obtained through the wireless local area network, and positioning is carried out through the RSSI;
the temperature measuring device measures the ambient temperature of a target by adopting a contact type measuring method, a thermal resistance temperature sensor or a thermocouple sensor is arranged on a work clothes, the ambient temperature of the periphery of the target can be measured only by wearing the work clothes, the thermal resistance temperature sensor or the thermocouple sensor is respectively arranged at the front part, the rear part and two sleeves of the work clothes, when the ambient temperature of the periphery of the target needs to be detected, 4 sensors on the work clothes work at the same time to detect the ambient temperature, and the obtained results are averaged to be the ambient temperature;
the heating devices are infrared lamps or hot air ports, the movement mode of the heating devices is rotation, n heating devices are arranged at a certain height as required, each heating device is arranged on an omnibearing pan-tilt which can rotate on a horizontal plane and also can rotate on a vertical plane, a motor is used for controlling the pan-tilt to rotate, encoders are arranged on two rotatable directions, the encoder on the horizontal plane can know the included angle between the direction of the heating device on the horizontal plane and the true north, the encoder on the vertical plane can know the included angle between the direction of the heating device and the vertical line, when the direction of the heating device needs to be adjusted to enable the heating device to be opposite to a certain position, the included angle between the direction of the heating device and a plumb line and the included angle between the direction in the horizontal plane and the due north direction need to be adjusted, namely, the cradle head is controlled to enable the outputs of two encoders on the horizontal plane and the plumb line to reach a certain value; when a certain position needs to be heated, the direction of the heating device is adjusted to enable the heating device to be opposite to the position for heating.
Furthermore, the whole area is divided into a plurality of sub-areas, the plurality of heating devices are responsible for heating one sub-area, and when the number of people in the sub-area is more than that of the heating devices, the system control system calculates the positions of the heating devices according to the principle that the heat quantity obtained by all people is equal and the total energy is maximum; when the number of people in the subarea is less than or equal to the number of heating devices, one or more heating devices are configured for each person, and the heating devices move along with the position movement of the person.
An automatic tracking method based on wireless positioning and rotary heating comprises the following steps: the positioning device positions the target in real time and sends the position information to the coordination control system; the coordination control system controls one or more heating devices needing to work to move to a specified position according to the position information of the target; the temperature measuring device measures the ambient temperature of the target in real time and sends temperature information to the coordination control system; the coordination control system adjusts the working power of the heating device according to the current temperature;
the positioning device is a wireless local area network formed by wireless access points, and positions the accessed mobile equipment by adopting a mode of combining an empirical test and a signal propagation model on the basis and the premise of the position information of the wireless access points; after the user handheld terminal enters the range covered by the positioning device, the RSSI and the AP address sent by the user of each handheld terminal around are obtained through the wireless local area network, and positioning is carried out through the RSSI;
the temperature measuring device measures the ambient temperature of a target by adopting a contact type measuring method, a thermal resistance temperature sensor or a thermocouple sensor is arranged on a work clothes, the ambient temperature of the periphery of the target can be measured only by wearing the work clothes, the thermal resistance temperature sensor or the thermocouple sensor is respectively arranged at the front part, the rear part and two sleeves of the work clothes, when the ambient temperature of the periphery of the target needs to be detected, 4 sensors on the work clothes work at the same time to detect the ambient temperature, and the obtained results are averaged to be the ambient temperature;
the heating devices are infrared lamps or hot air ports, the movement mode of the heating devices is rotation, n heating devices are arranged at a certain height as required, each heating device is arranged on an omnibearing pan-tilt which can rotate on a horizontal plane and also can rotate on a vertical plane, a motor is used for controlling the pan-tilt to rotate, encoders are arranged on two rotatable directions, the encoder on the horizontal plane can know the included angle between the direction of the heating device on the horizontal plane and the true north, the encoder on the vertical plane can know the included angle between the direction of the heating device and the vertical line, when the direction of the heating device needs to be adjusted to enable the heating device to be opposite to a certain position, the included angle between the direction of the heating device and a plumb line and the included angle between the direction in the horizontal plane and the due north direction need to be adjusted, namely, the cradle head is controlled to enable the outputs of two encoders on the horizontal plane and the plumb line to reach a certain value; when a certain position needs to be heated, the direction of the heating device is adjusted to ensure that the heating device is just opposite to the position for heating; when the space for supplying heat is large, the whole plane is divided into a plurality of sub-areas according to the requirement, and each sub-area is internally provided with a heating device;
when the heating device is an infrared lamp, the radiation illumination value q of the infrared lamp received at a certain point is related to the distance r from the point to the axis of the infrared lamp and the heating current I, and the radiation illumination value q of the infrared lamp received at a certain point is as follows:
q＝f(r,I)；
when the heating device is a hot air port, the unit area heating power P received by a certain point is related to the distance l from the point to the hot air port, the air outlet speed v and the air outlet temperature t, and the unit area heating power received by a certain point is as follows:
p＝f(l,v,t)；
the coordination control system is used for receiving the position information and the temperature information and formulating a control strategy to control the corresponding heating device to supply heat to the target; when one or more targets are in a heating area, the radiant illumination value or the heating power per unit area of each target needs to reach a certain value; when m targets exist in an area, in order to meet the heat supply requirement, the coordination control system makes a control strategy and transmits the control strategy to a heating device needing to work; the control strategy includes controlling which heating devices are operated and at what power the heating devices are heating;
the specific control strategy is as follows:
when a plurality of heating devices exist, the decision method of the heat supply quantity of the specific heating device and the heat supply quantity of each heating device is as follows: suppose there are n heating devices, the number is: 1, L, n; power per heating device is OiIn which O isi>0: the total m positions needing heat supply are numbered as follows: the heat quantity needed to be provided by the 1, L, m, j heating source in unit time is QjTo maintain or reach its desired temperature tjWherein j is 1, L, m and Qj>0, the heating device i can provide heat P in unit time for the heating source jij；
Step 1: for each heating device i
According to
Rearrange the corresponding decision variable x from small to large values ofiWherein the content of the first and second substances,
x having the smallest value ofiBecomes x1X with the largest valueiBecomes xnThe decision scheme uses a binary number X ═ X (X)1x2L xn)2Is shown, e.g., X ═ 00L 01)2Indicating that the nth heating device after rearrangement is turned on and the rest is turned off;
step 2: let Y be ═ infinity,
the currently adopted scheme is X ═ X (X)1x2L xn)2＝(00L 1)2(ii) a According to QjIs ordered from large to small, i.e. Q, for its constraintjThe largest value is set as the first constraint, the next largest is set as the second constraint, …, and the smallest is set as the last constraint;
step 3: calculating an objective function value for the current solution
If the objective function value is smaller than Y, setting the first constraint as the current constraint, otherwise, turning to Step 6;
step 4: according to the current scheme X ═ X1x2L xn)2Judging whether the current constraint condition is met, if so, turning to Step5, otherwise, turning to Step 6;
step 5: judging whether constraints exist or not, if so, taking down one constraint as the current constraint, and turning to Step 4; otherwise, updating the optimal decision scheme
For the current scheme X, let Y be the objective function value of the current decision scheme X, go to Step 6;
step 6: judging X + 1. ltoreq (11L 1)2If yes, taking the next scheme, namely taking X +1 as the current scheme, and turning to Step 3; otherwise go to Step 7;
step 7: after the algorithm is finished, outputting an optimal decision scheme
And a corresponding optimum value Y, if Y ═ infinity,
it indicates that the problem has no feasible solution;
wherein x isiIs a decision variable, 0 in 0 or 1 means that the ith heating device is turned off, and the opening 1 means that the ith heating device is turned on;
j is 1, L, m and xi0 or 1 as a constraint condition, wherein
The total energy consumption is minimized, j is 1, and m represents that the heat source provided by each heating source to the heat source is more than or equal to the required quantity of the heating source; and xi0 or 1 represents the value range of the decision variable.
Further, the operation of the positioning device comprises two phases, an off-line sampling phase and a real-time positioning phase, wherein the off-line sampling phase aims to construct a database about the relationship between the signal intensity and the position of the sampling point, namely a database of position fingerprints or a radio map; in order to generate the database, grids need to be divided in an area needing to be positioned, sampling points are established, a wLAN receiving device is used for sampling all the sampling points one by one, the position of each sampling point, the obtained RSSI and the AP address information are recorded, and the sampled data are stored in the database after being processed; in the real-time positioning stage, the user hand-held terminal moves in an area covered by the positioning device, the wireless local area network receives the current RSSI and the AP address in real time, uploads the collected information of the current RSSI and the AP address to the database for matching to obtain an estimated position, and matches the strength of a signal received by the wireless local area network with numerous data in the database, so that real-time positioning is realized.
Further, the matching algorithm includes an NN algorithm, a KNN algorithm, and a neural network algorithm.
The invention has the beneficial effects that:
1. the invention can position and measure the ambient temperature of people in the area, adjust the position and direction of the heating device, the heating temperature, the working quantity of the heating device and the like according to the position and the ambient temperature of the people in the area, the heating device moves to the vicinity of the people to directly heat the area around the people, and the position and the direction of the heating device move along with the people, thereby realizing the function of automatically tracking and heating.
2. The invention can position the personnel in the area in real time, and the heating device can move along with the position of the personnel, thereby realizing the function of tracking and heating.
3. The invention does not need to heat the whole environment, only heats the surrounding area of personnel, and has the advantages of high temperature rising speed, short heating time and low energy consumption.
4. When the number of people in the area is small, the heating devices corresponding to the people work, and the rest heating devices can be in a standby state; when no person is in the area, the heating system stops working, the defects of the existing heating system are effectively overcome, and energy consumption is reduced.
5. The invention adopts the wLAN technology for positioning, can realize the tasks of positioning, monitoring and tracking in a complex environment, and people only need to access a mobile phone into a wireless network without carrying redundant equipment, thereby reducing the overall cost and having extremely high positioning precision.
6. The invention can accurately measure the ambient temperature around the target by mounting the thermal resistance temperature sensor or the thermocouple sensor on the working clothes.
7. The heating device of the invention adopts the infrared lamp or the hot air port, the heating main body as the core does not need to move, the whole mechanical structure is simple, and the whole cost is reduced.
8. The invention adjusts the heating power according to the temperature around the target, and improves the comfort level of the surrounding environment of the target.
9. When the number of targets in the sub-area is small, the heating devices corresponding to the targets work, and the rest heating devices can be in a standby state; when no target exists in the area, the heating system stops working, the defects of the existing heating system are effectively overcome, and energy consumption is reduced.
Drawings
Fig. 1 is a schematic diagram of the basic structure of the automatic tracking system based on wireless positioning and rotary heating according to the present invention.
Fig. 2 is a schematic structural diagram of the positioning device of the present invention.
Fig. 3 is a schematic workflow diagram of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, 2 and 3, an automatic tracking system based on wireless positioning and rotary heating includes a positioning device, a temperature measuring device, a coordination control system and a heating device, wherein the positioning device is used for positioning a human body and sending positioning information to the coordination control system; the temperature measuring device measures the ambient temperature of the human body and transmits temperature information to the coordination control system; the coordination control system receives the position information and the temperature information of the person, and controls one or more heating devices needing to work to move to a specified position according to the position information of the person; the temperature measuring device measures the ambient temperature of a person in real time, the temperature information is sent to the coordination control system, and the coordination control system adjusts the working power of the heating device according to the current temperature;
the positioning device is a wireless local area network formed by wireless access points, and positions the accessed mobile equipment by adopting a mode of combining an empirical test and a signal propagation model on the basis and the premise of the position information of the wireless access points; after the user handheld terminal enters the range covered by the positioning device, the RSSI and the AP address sent by the user of each handheld terminal around are obtained through the wireless local area network, and positioning is carried out through the RSSI;
the temperature measuring device measures the ambient temperature of a target by adopting a contact type measuring method, a thermal resistance temperature sensor or a thermocouple sensor is arranged on a work clothes, the ambient temperature of the periphery of the target can be measured only by wearing the work clothes, the thermal resistance temperature sensor or the thermocouple sensor is respectively arranged at the front part, the rear part and two sleeves of the work clothes, when the ambient temperature of the periphery of the target needs to be detected, 4 sensors on the work clothes work at the same time to detect the ambient temperature, and the obtained results are averaged to be the ambient temperature;
the heating devices are infrared lamps or hot air ports, the movement mode of the heating devices is rotation, n heating devices are arranged at a certain height as required, each heating device is arranged on an omnibearing pan-tilt which can rotate on a horizontal plane and also can rotate on a vertical plane, a motor is used for controlling the pan-tilt to rotate, encoders are arranged on two rotatable directions, the encoder on the horizontal plane can know the included angle between the direction of the heating device on the horizontal plane and the true north, the encoder on the vertical plane can know the included angle between the direction of the heating device and the vertical line, when the direction of the heating device needs to be adjusted to enable the heating device to be opposite to a certain position, the included angle between the direction of the heating device and a plumb line and the included angle between the direction in the horizontal plane and the due north direction need to be adjusted, namely, the cradle head is controlled to enable the outputs of two encoders on the horizontal plane and the plumb line to reach a certain value; when a certain position needs to be heated, the direction of the heating device is adjusted to enable the heating device to be opposite to the position for heating.
Dividing the whole area into a plurality of sub-areas, wherein the plurality of heating devices are responsible for heating one sub-area, and when the number of people in the sub-area is more than that of the heating devices, the system control system calculates the positions of the heating devices according to the principle that the heat quantity obtained by each person is equal and the total energy is maximum; when the number of people in the subarea is less than or equal to the number of heating devices, one or more heating devices are configured for each person, and the heating devices move along with the position movement of the person.
An automatic tracking method based on wireless positioning and rotary heating comprises the following steps: the positioning device positions the target in real time and sends the position information to the coordination control system; the coordination control system controls one or more heating devices needing to work to move to a specified position according to the position information of the target; the temperature measuring device measures the ambient temperature of the target in real time and sends temperature information to the coordination control system; the coordination control system adjusts the working power of the heating device according to the current temperature;
the positioning device is a wireless local area network formed by wireless access points, and positions the accessed mobile equipment by adopting a mode of combining an empirical test and a signal propagation model on the basis and the premise of the position information of the wireless access points; after the user handheld terminal enters the range covered by the positioning device, the RSSI and the AP address sent by the user of each handheld terminal around are obtained through the wireless local area network, and positioning is carried out through the RSSI;
the temperature measuring device measures the ambient temperature of a target by adopting a contact type measuring method, a thermal resistance temperature sensor or a thermocouple sensor is arranged on a work clothes, the ambient temperature of the periphery of the target can be measured only by wearing the work clothes, the thermal resistance temperature sensor or the thermocouple sensor is respectively arranged at the front part, the rear part and two sleeves of the work clothes, when the ambient temperature of the periphery of the target needs to be detected, 4 sensors on the work clothes work at the same time to detect the ambient temperature, and the obtained results are averaged to be the ambient temperature;
the heating devices are infrared lamps or hot air ports, the movement mode of the heating devices is rotation, n heating devices are arranged at a certain height as required, each heating device is arranged on an omnibearing pan-tilt which can rotate on a horizontal plane and also can rotate on a vertical plane, a motor is used for controlling the pan-tilt to rotate, encoders are arranged on two rotatable directions, the encoder on the horizontal plane can know the included angle between the direction of the heating device on the horizontal plane and the true north, the encoder on the vertical plane can know the included angle between the direction of the heating device and the vertical line, when the direction of the heating device needs to be adjusted to enable the heating device to be opposite to a certain position, the included angle between the direction of the heating device and a plumb line and the included angle between the direction in the horizontal plane and the due north direction need to be adjusted, namely, the cradle head is controlled to enable the outputs of two encoders on the horizontal plane and the plumb line to reach a certain value; when a certain position needs to be heated, the direction of the heating device is adjusted to ensure that the heating device is just opposite to the position for heating; when the space for supplying heat is large, the whole plane is divided into a plurality of sub-areas according to the requirement, and each sub-area is internally provided with a heating device;
when the heating device is an infrared lamp, the radiation illumination value q of the infrared lamp received at a certain point is related to the distance r from the point to the axis of the infrared lamp and the heating current I, and the radiation illumination value q of the infrared lamp received at a certain point is as follows:
q＝f(r,I)；
when the heating device is a hot air port, the unit area heating power P received by a certain point is related to the distance l from the point to the hot air port, the air outlet speed v and the air outlet temperature t, and the unit area heating power received by a certain point is as follows:
p＝f(l,v,t)；
the coordination control system is used for receiving the position information and the temperature information and formulating a control strategy to control the corresponding heating device to supply heat to the target; when one or more targets are in a heating area, the radiant illumination value or the heating power per unit area of each target needs to reach a certain value; when m targets exist in an area, in order to meet the heat supply requirement, the coordination control system makes a control strategy and transmits the control strategy to a heating device needing to work; the control strategy includes controlling which heating devices are operated and at what power the heating devices are heating;
the specific control strategy is as follows:
when a plurality of heating devices exist, the decision method of the heat supply quantity of the specific heating device and the heat supply quantity of each heating device is as follows: suppose there are n heating devices, the number is: 1, L, n; power per heating device is OiIn which O isi>0: the total m positions needing heat supply are numbered as follows: the heat quantity needed to be provided by the 1, L, m, j heating source in unit time is QjTo maintain or reach its desired temperature tjWherein j is 1, L, m and Qj>0, the heating device i can provide heat P in unit time for the heating source jij；
Step 1: for each heating device i
According to
Rearrange the corresponding decision variable x from small to large values ofiWherein the content of the first and second substances,
x having the smallest value ofiBecomes x1X with the largest valueiBecomes xnThe decision scheme uses a binary number X ═ X (X)1x2L xn)2Is shown, e.g., X ═ 00L 01)2Indicating that the nth heating device after rearrangement is turned on and the rest is turned off;
step 2: let Y be ═ infinity,
the currently adopted scheme is X ═ X (X)1x2L xn)2＝(00L 1)2(ii) a According to QjIs ordered from large to small, i.e. Q, for its constraintjThe largest value is set as the first constraint, the next largest is set as the second constraint, …, and the smallest is set as the last constraint;
step 3: calculating an objective function value for the current solution
If the objective function value is smaller than Y, setting the first constraint as the current constraint, otherwise, turning to Step 6;
step 4: according to the current scheme X ═ X1x2L xn)2Judging whether the current constraint condition is met, if so, turning to Step5, otherwise, turning to Step 6;
step 5: judging whether constraints exist or not, if so, taking down one constraint as the current constraint, and turning to Step 4; otherwise, updating the optimal decision scheme
For the current scheme X, let Y be the objective function value of the current decision scheme X, go to Step 6;
step 6: judging X + 1. ltoreq (11L 1)2If yes, taking the next scheme, namely taking X +1 as the current scheme, and turning to Step 3; otherwise go to Step 7;
step 7: after the algorithm is finished, outputting an optimal decision scheme
And a corresponding optimum value Y, if Y ═ infinity,
it indicates that the problem has no feasible solution;
wherein x isiIs a decision variable, 0 in 0 or 1 means that the ith heating device is turned off, and the opening 1 means that the ith heating device is turned on;
j is 1, L, m and xi0 or 1 as a constraint condition, wherein
The total energy consumption is minimized, j is 1, and m represents that the heat source provided by each heating source to the heat source is more than or equal to the required quantity of the heating source; and xi0 or 1 represents the value range of the decision variable.
The operation of the positioning device comprises two phases, an off-line sampling phase and a real-time positioning phase, wherein the off-line sampling phase aims at constructing a database about the relation between the signal intensity and the position of a sampling point, namely a database of position fingerprints or a radio map; in order to generate the database, grids need to be divided in an area needing to be positioned, sampling points are established, a wLAN receiving device is used for sampling all the sampling points one by one, the position of each sampling point, the obtained RSSI and the AP address information are recorded, and the sampled data are stored in the database after being processed; in the real-time positioning stage, the user hand-held terminal moves in an area covered by the positioning device, the wireless local area network receives the current RSSI and the AP address in real time, uploads the collected information of the current RSSI and the AP address to the database for matching to obtain an estimated position, and matches the strength of a signal received by the wireless local area network with numerous data in the database, so that real-time positioning is realized.
The matching algorithm comprises an NN algorithm, a KNN algorithm and a neural network algorithm.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (3)
1. An automatic tracking method based on wireless positioning and rotary heating is characterized in that: the method comprises the following steps: the positioning device positions the target in real time and sends the position information to the coordination control system; the coordination control system controls one or more heating devices needing to work to move to a specified position according to the position information of the target; the temperature measuring device measures the ambient temperature of the target in real time and sends temperature information to the coordination control system; the coordination control system adjusts the working power of the heating device according to the current temperature;
the positioning device is a wireless local area network formed by wireless access points, and positions the accessed mobile equipment by adopting a mode of combining an empirical test and a signal propagation model on the basis and the premise of the position information of the wireless access points; after the user handheld terminal enters the range covered by the positioning device, the RSSI and the AP address sent by the user of each handheld terminal around are obtained through the wireless local area network, and positioning is carried out through the RSSI;
the temperature measuring device measures the ambient temperature of a target by adopting a contact type measuring method, a thermal resistance temperature sensor or a thermocouple sensor is arranged on a work clothes, the ambient temperature of the periphery of the target can be measured only by wearing the work clothes, the thermal resistance temperature sensor or the thermocouple sensor is respectively arranged at the front part, the rear part and two sleeves of the work clothes, when the ambient temperature of the periphery of the target needs to be detected, 4 sensors on the work clothes work at the same time to detect the ambient temperature, and the obtained results are averaged to be the ambient temperature;
the heating devices are infrared lamps or hot air ports, the movement mode of the heating devices is rotation, n heating devices are arranged at a certain height as required, each heating device is arranged on an omnibearing pan-tilt which can rotate on a horizontal plane and also can rotate on a vertical plane, a motor is used for controlling the pan-tilt to rotate, encoders are arranged on two rotatable directions, the encoder on the horizontal plane can know the included angle between the direction of the heating device on the horizontal plane and the true north, the encoder on the vertical plane can know the included angle between the direction of the heating device and the vertical line, when the direction of the heating device needs to be adjusted to enable the heating device to be opposite to a certain position, the included angle between the direction of the heating device and a plumb line and the included angle between the direction in the horizontal plane and the due north direction need to be adjusted, namely, the cradle head is controlled to enable the outputs of two encoders on the horizontal plane and the plumb line to reach a certain value; when a certain position needs to be heated, the direction of the heating device is adjusted to ensure that the heating device is just opposite to the position for heating;
when the heating device is an infrared lamp, the radiation illumination value q of the infrared lamp received at a certain point is related to the distance r from the point to the axis of the infrared lamp and the heating current I, and the radiation illumination value q of the infrared lamp received at a certain point is as follows:
q＝f(r,I)；
when the heating device is a hot air port, the unit area heating power P received by a certain point is related to the distance l from the point to the hot air port, the air outlet speed v and the air outlet temperature t, and the unit area heating power received by a certain point is as follows:
p＝f(l,v,t)；
the coordination control system is used for receiving the position information and the temperature information and formulating a control strategy to control the corresponding heating device to supply heat to the target; when one or more targets are in a heating area, the radiant illumination value or the heating power per unit area of each target needs to reach a certain value; when m targets exist in an area, in order to meet the heat supply requirement, the coordination control system makes a control strategy and transmits the control strategy to a heating device needing to work; the control strategy includes controlling which heating devices are operated and at what power the heating devices are heating;
the specific control strategy is as follows:
decision of the quantity of heat supplied by a particular heating device and the quantity of heat supplied by each heating device when a plurality of heating devices are presentThe method comprises the following steps: suppose there are n heating devices, the number is: 1, …, n; power per heating device is OiIn which O isiIs more than 0: the total m positions needing heat supply are numbered as follows: 1, …, m, j, the heat source needs to provide Q in unit timejTo maintain or reach its desired temperature tjWherein j is 1, …, m and QjThe heat quantity provided by the heating device i to the heating source j in unit time is P when the temperature is more than 0ij；
Step 1: for each heating device i
According to
Rearrange the corresponding decision variable x from small to large values ofiWherein the content of the first and second substances,
x having the smallest value ofiBecomes x1X with the largest valueiBecomes xnThe decision scheme uses a binary number X ═ X (X)1x2…xn)2Is shown, e.g., X ═ 00 … 01 (01)2Indicating that the nth heating device after rearrangement is turned on and the rest is turned off;
step 2: let Y be ═ infinity,
the currently adopted scheme is X ═ X (X)1x2…xn)2＝(00…1)2(ii) a According to QjIs ordered from large to small, i.e. Q, for its constraintjThe largest value is set as the first constraint, the next largest is set as the second constraint, …, and the smallest is set as the last constraint;
step 3: calculating an objective function value for the current solution
Such as eyesIf the value of the standard function is smaller than Y, setting the first constraint as the current constraint, otherwise, turning to Step 6;
step 4: according to the current scheme X ═ X1x2…xn)2Judging whether the current constraint condition is met, if so, turning to Step5, otherwise, turning to Step 6;
step 5: judging whether constraints exist or not, if so, taking down one constraint as the current constraint, and turning to Step 4; otherwise, updating the optimal decision scheme
For the current scheme X, let Y be the objective function value of the current decision scheme X, go to Step 6;
step 6: judging X +1 ≦ (11 … 1)2If yes, taking the next scheme, namely taking X +1 as the current scheme, and turning to Step 3; otherwise go to Step 7;
step 7: after the algorithm is finished, outputting an optimal decision scheme
And a corresponding optimum value Y, if Y ═ infinity,
it indicates that the problem has no feasible solution;
wherein x isiIs a decision variable, 0 in 0 or 1 means that the ith heating device is turned off, and the opening 1 means that the ith heating device is turned on;
j is 1, …, m and xi0 or 1 as a constraint condition, wherein
An objective function, namely, minimizing the total energy consumption, wherein j is 1, …, and m represents that each heating source supplies a heat source which is equal to or more than the required amount of the heating source; and xi0 or 1 represents the value range of the decision variable.
2. The method of claim 1, wherein the method comprises: the work of the positioning device comprises two stages, namely an off-line sampling stage and a real-time positioning stage, wherein the off-line sampling stage aims at constructing a database about the relation between the signal intensity and the position of a sampling point, namely a position fingerprint database; in order to generate the database, grids need to be divided in an area needing to be positioned, sampling points are established, a wLAN receiving device is used for sampling all the sampling points one by one, the position of each sampling point, the obtained RSSI and the AP address information are recorded, and the sampled data are stored in the database after being processed; in the real-time positioning stage, the user hand-held terminal moves in an area covered by the positioning device, the wireless local area network receives the current RSSI and the AP address in real time, uploads the collected information of the current RSSI and the AP address to the database for matching to obtain an estimated position, and matches the strength of a signal received by the wireless local area network with numerous data in the database, so that real-time positioning is realized.
3. The method of claim 2, wherein the method comprises: the matched algorithm comprises an NN algorithm, a KNN algorithm and a neural network algorithm.
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| EP2543934A2 (en) * | 2011-07-06 | 2013-01-09 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
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| EP2543934A2 (en) * | 2011-07-06 | 2013-01-09 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| WO2013172279A1 (en) * | 2012-05-14 | 2013-11-21 | 三菱電機株式会社 | Air conditioning system |
| CN103989264A (en) * | 2014-04-12 | 2014-08-20 | 宁波市东盛纺织有限公司 | Multifunctional garment |
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