CN109731265B - Fire-fighting fireproof spraying device based on gas sensor and control method thereof - Google Patents
Fire-fighting fireproof spraying device based on gas sensor and control method thereof Download PDFInfo
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- CN109731265B CN109731265B CN201910060780.1A CN201910060780A CN109731265B CN 109731265 B CN109731265 B CN 109731265B CN 201910060780 A CN201910060780 A CN 201910060780A CN 109731265 B CN109731265 B CN 109731265B
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Abstract
The invention discloses a fire-fighting spray device based on a gas sensor, which comprises: the center of the top surface of the base is provided with a rectangular groove, and one side wall of the groove is provided with a rack; the through groove is rectangular and is arranged in the center of the bottom surface of the groove and penetrates through the bottom surface of the base; a gear disposed within the groove and engaged with the rack, the gear being axially movable along the groove; one end of the first connecting arm is rotatably arranged at the center of the bottom surface of the gear through a first rotating disc; one end of the second connecting arm is rotatably arranged at the other end of the first connecting arm through a second rotating disc; the spray head is cylindrical, the top surface of the spray head is rotatably arranged at the other end of the second connecting arm through a third rotating disk, and water spray holes are uniformly formed in the bottom surface and the circumferential side surface of the spray head. The invention also provides a control method of the fire-fighting spray device based on the gas sensor, and efficient fire extinguishing is realized.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to a fire protection spraying device based on a gas sensor and a control method thereof.
Background
In recent years, the frequent occurrence of fire disasters causes serious loss of lives and properties of people, various high-power electrical equipment is used, so that fire disasters can be caused in the heating process in large cities with dense crowds and small mountains and villages with remote places, and most of buildings, rooms or galleries are provided with water spraying heads for fire fighting.
Disclosure of Invention
The invention designs and develops a fire-fighting spray device based on a gas sensor, which can realize the axial movement of a spray head through a gear and a rack, realize the multi-angle rotation of the spray head through a first rotating arm and a second rotating arm and improve the fire-fighting effect.
The invention also aims to design and develop a control method of the fire-fighting spray device based on the gas sensor, which can collect the environment near the spray device, determine the ignition point based on the BP neural network and further determine the position of the spray head.
The invention can also accurately control the water spraying pressure in the spray head according to the environment near the spray device, thereby realizing high-efficiency fire extinguishing.
The technical scheme provided by the invention is as follows:
a fire protection sprinkler device for fire protection based on gas sensor includes:
the center of the top surface of the base is provided with a rectangular groove, and one side wall of the groove is provided with a rack;
the through groove is rectangular and is arranged in the center of the bottom surface of the groove and penetrates through the bottom surface of the base;
a gear disposed within the groove and engaged with the rack, the gear being axially movable along the groove;
one end of the first connecting arm is rotatably arranged at the center of the bottom surface of the gear through a first rotating disc;
one end of the second connecting arm is rotatably arranged at the other end of the first connecting arm through a second rotating disc;
the spray head is cylindrical, the top surface of the spray head is rotatably arranged at the other end of the second connecting arm through a third rotating disk, and water spray holes are uniformly formed in the bottom surface and the circumferential side surface of the spray head.
Preferably, the first connecting arm includes:
a first connection portion; and
one end of the second connecting part is fixedly connected with one end of the first connecting part;
one end of the third connecting part is fixedly connected with the other end of the second connecting part;
the first connecting part is perpendicular to the second connecting part, the second connecting part is perpendicular to the third connecting part, and the third connecting part and the first connecting part are respectively arranged on two sides of the second connecting part;
wherein the first connecting arm and the second connecting arm have the same structure.
Preferably, the method further comprises the following steps:
the first motor is arranged on the top surface of the gear, and an output shaft of the first motor is fixedly connected with the gear and used for driving the gear to rotate;
the second motor is arranged on the bottom surface of the gear, and an output shaft of the second motor is fixedly connected with the first rotating disk and used for driving the first rotating disk to rotate;
the third motor is arranged at the other end of the first connecting arm, and an output shaft of the third motor is fixedly connected with the second rotating disc and used for driving the second rotating disc to rotate;
and the fourth motor is arranged at the other end of the two connecting arms, and an output shaft is fixedly connected with the third rotating disk and used for driving the third rotating disk to rotate.
Preferably, the method further comprises the following steps:
the water pipe is arranged in the base, the first connecting arm and the second connecting arm, and one end of the water pipe is communicated with the spray head;
the high-pressure water source is communicated with the other end of the water pipe through an electronic pressure valve;
the fixing seats are arranged at four corners of the base;
and the fastening bolt is in threaded connection with the fixed seat and is used for fixing the base.
Preferably, the method further comprises the following steps:
the temperature sensors are uniformly arranged on the base and used for detecting the temperature near the spraying device;
the smoke sensor is arranged on the base and used for detecting the smoke concentration near the spraying device;
a flame sensor disposed on the base for detecting the presence of a flame proximate the spray device;
the gas sensor is arranged on the base and used for detecting the components and the concentration of gas near the spraying device;
and the controller is connected with the temperature sensor, the smoke sensor, the flame sensor, the gas sensor, the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve, is used for receiving detection data of the gas sensor of the temperature sensor, the smoke sensor and the flame sensor and controlling the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve to work.
A control method of a fire-fighting fireproof spraying device based on a gas sensor collects the environment near the spraying device and determines the position of a spray head based on a BP neural network, and specifically comprises the following steps:
step one, acquiring the temperature, the smoke concentration, the gas composition and concentration near the spraying device and whether flame exists or not through a sensor according to a sampling period;
step two, determining an input layer neuron vector x ═ x of the three-layer BP neural network1,x2,x3,x4,x5}；Wherein x is1Is the temperature, x, in the vicinity of the spray device2Is the concentration of smoke, x, in the vicinity of the spray device3Gas composition x in the vicinity of the spray device4Is the concentration of gas, x, in the vicinity of the spray device5A flame present condition;
wherein the input neuron value x1＝{T1,T2,...,Ti,...,TqIn which T isiThe detected temperature value of the ith temperature sensor is obtained, and q is the number of the temperature sensors; the input neuron value
When x is5When 0, no flame is present, x5When 1, a flame is present;
mapping the input layer vector to a hidden layer, wherein the number of neurons of the hidden layer is m;
step four, obtaining an output layer neuron vector o ═ o1,o2,o3,o4}; wherein o is1Is the angle of rotation of the first rotating disk, o2Is the angle of rotation of the second rotating disk, o3Is the rotation angle of the third rotating disk, o4The distance of the gear moving along the axial direction of the rectangular groove is defined, and the gear is located in the middle of the rectangular groove in the initial position.
Preferably, when the spray head moves to the output position, the electronic pressure valve is controlled so that the water spray pressure in the spray head satisfies:
wherein p is the water spray pressure in the spray head, pmaxFor maximum achievable water spray pressure in the spray head, p0The pressure of water in the water pipe directly flowing into the spray head without pressurization, n is the number of water spraying holes on the spray head, T is the temperature near the spray device, and T is the pressure of water in the water pipe directly flowing into the spray head without pressurization0As reference temperature, c as concentration of mist in the vicinity of the spray device, c0The standard concentration of the smoke, R is the radius of the water pipe at the joint of the spray head and the water pipe, R is the radius of the water spray hole, and e is the natural logarithmBase number of cjIs the concentration of the j-th gas, cj,0Is the base concentration of the jth gas, J is the weight of the jth gas, k is the number of gas species, and a + B + ·+ J + ·+ M ═ 1.
Preferably, the temperature in the vicinity of the spraying device is:
preferably, the excitation functions of the hidden layer and the output layer both adopt S-shaped functions fj(x)＝1/(1+e-x)
Preferably, the number m of hidden nodes satisfies:
wherein n is the number of nodes of the input layer, and p is the number of nodes of the output layer.
The invention has the following beneficial effects:
(1) the fire-fighting spraying device based on the gas sensor, which is designed and developed by the invention, can realize the axial movement of the spray head through the gear and the rack, and realize the multi-angle rotation of the spray head through the first rotating arm and the second rotating arm, thereby improving the fire extinguishing effect.
(2) The control method of the fire-fighting spray device based on the gas sensor, which is designed and developed by the invention, can collect the environment near the spray device, determine the ignition point based on the BP neural network and further determine the position of the spray head. The invention can also accurately control the water spraying pressure in the spray head according to the environment near the spray device, thereby realizing high-efficiency fire extinguishing.
Drawings
Fig. 1 is a schematic structural diagram of a fire-fighting fire sprinkler device based on a gas sensor according to the present invention.
Fig. 2 is a schematic bottom view of the gas sensor-based fire protection sprinkler device according to the present invention.
Fig. 3 is an enlarged view of a partial structure of the fire-fighting spray device based on the gas sensor.
Fig. 4 is an enlarged view of a partial structure of the fire-fighting spray device based on the gas sensor.
Fig. 5 is an enlarged view of a part of the structure of the fire-fighting spray device based on the gas sensor.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 5, the present invention provides a gas sensor-based fire protection sprinkler device for fire protection, comprising: a base 110; and a groove 111, which is rectangular and is disposed at the center of the top surface of the base 110; a through groove 112, which is rectangular, is arranged at the center of the bottom surface of the groove 111 and penetrates through the bottom surface of the base 110; a rack 113 axially disposed on one side wall of the groove 111, and a gear 114 disposed in the groove 111 and engaged with the rack 113, the gear 114 being capable of moving axially along the groove 111. When the base 110 is fixed horizontally or vertically, the horizontal or vertical displacement of the spray head can be changed, and the spray head can also be fixed in an inclined manner, namely the spray head is installed according to the specific actual installation requirement.
A first motor (not shown in the figure) which is arranged at the center of the top surface of the gear 114, and the output shaft is fixedly connected with the gear 114, and is used for driving the gear 114 to rotate, so as to drive the gear 114 to axially move along the groove 111; and the second motor 130 is arranged at the center of the bottom surface of the gear, and the output shaft is fixedly connected with the first rotating disk 120 and is used for driving the first rotating disk 120 to rotate.
One end of the first connecting arm 140 is fixedly connected to the first rotating disc 120, and when the first rotating disc 120 rotates, the first connecting arm can be driven to rotate. The first connecting arm 140 includes: a first connection portion 141 having one end fixedly connected to the first rotating disk 120; a second connection part 142, one end of which is fixedly connected to the other end of the first connection part 141; a third connecting portion 143, one end of which is fixedly connected to the other end of the second connecting portion 142; the first connecting portion 141 is perpendicular to the second connecting portion 142, the second connecting portion 142 is perpendicular to the third connecting portion 143, and the third connecting portion 143 and the first connecting portion 141 are respectively disposed on two sides of the second connecting portion 142.
A third motor 150 disposed at the other end of the first link arm 140, an output shaft of the third motor 150 being fixedly connected with a second rotating disk 160 for driving the second rotating disk 160 to rotate; one end of the second connecting arm 170 is fixedly connected to the second rotating disk 160, and when the second rotating disk 160 rotates, the second connecting arm can be driven to rotate. The second connecting arm 170 has the same structure as the first connecting arm 140, and the structure thereof is not described herein.
And the fourth motor 180 is arranged at the other end of the second connecting arm 170, and a third rotating disk 190 is fixedly connected to an output shaft of the fourth motor 180 and used for driving the third rotating disk 190 to rotate.
And the spray head 200 is cylindrical, the top surface of the spray head is fixedly connected with the third rotating disk 190, and the bottom surface and the circumferential side surface of the spray head 200 are uniformly provided with water spray ports 210 for spraying water. A water pipe (not shown) provided inside the base 110, the first connecting arm 140, and the second connecting arm 170, and having one end communicating with the spray head 200; and a high-pressure water source (not shown in the figure) which is communicated with the other end of the water pipe through an electronic pressure valve and is used for providing water source.
In this embodiment, the method further includes: fixing seats 115 provided at four corners of the base 110; and a fastening bolt 116, which is in threaded connection with the fixing seat 115, for fixing the base 110.
In this embodiment, the method further includes: a plurality of temperature sensors uniformly arranged on the base 110 for detecting the temperature near the spray device; a smoke sensor provided on the base 110 for detecting the concentration of smoke near the shower device; a flame sensor disposed on the base 110 for detecting the presence of a flame near the sprinkler; a gas sensor disposed on the base 110 for detecting the composition and concentration of gas near the shower device; and the controller is connected with the temperature sensor, the smoke sensor, the flame sensor, the gas-sensitive sensor, the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve, and is used for receiving the detection data of the gas-sensitive sensors of the temperature sensor, the smoke sensor and the flame sensor and controlling the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve to work.
The fire-fighting spraying device based on the gas sensor, which is designed and developed by the invention, can realize the axial movement of the spray head through the gear and the rack, and realize the multi-angle rotation of the spray head through the first rotating arm and the second rotating arm, thereby improving the fire extinguishing effect.
The invention also provides a control method of the fire-fighting spray device based on the gas sensor, which can collect the environment near the spray device and determine the position of the spray head based on the BP neural network, and specifically comprises the following steps:
step one, establishing a BP neural network model.
Fully interconnected connections are formed among neurons of each layer on the BP model, the neurons in each layer are not connected, and the output and the input of neurons in an input layer are the same, namely oi＝xi. The operating characteristics of the neurons of the intermediate hidden and output layers are
opj＝fj(netpj)
Where p represents the current input sample, ωjiIs the connection weight from neuron i to neuron j, opiIs the current input of neuron j, opjIs the output thereof; f. ofjIs a non-linear, slightly non-decreasing function, generally taken as a sigmoid function, i.e. fj(x)＝1/(1+e-x)。
The BP network system structure adopted by the invention consists of three layers, wherein the first layer is an input layer, n nodes are provided in total, the n nodes correspond to n detection signals of the spraying device, and the signal parameters are given by a data preprocessing module; the second layer is a hidden layer, and has m nodes which are determined by the training process of the network in a self-adaptive mode; the third layer is an output layer, p nodes are provided in total, and the output is determined by the response actually needed by the system.
The mathematical model of the network is:
inputting a vector: x ═ x1,x2,...,xn)T
Intermediate layer vector: y ═ y1,y2,...,ym)T
Outputting a vector: o ═ o (o)1,o2,...,op)T
In the invention, the number of nodes of an input layer is n-5, the number of nodes of an output layer is p-4, and the number of nodes of a hidden layer is m-5.
The input layer 5 parameters are respectively expressed as: x is the number of1Is the temperature, x, in the vicinity of the spray device2Is the concentration of smoke, x, in the vicinity of the spray device3Gas composition x in the vicinity of the spray device4Is the concentration of gas, x, in the vicinity of the spray device5A flame present condition;
wherein the input neuron value x1＝{T1,T2,…,Ti,…,TqIn which T isiThe detected temperature value of the ith temperature sensor is obtained, and q is the number of the temperature sensors; the input neuron value
When x is5When 0, no flame is present, x5When 1, a flame is present;
the output layer 4 parameters are respectively expressed as: o1Is the angle of rotation of the first rotating disk, o2Is the angle of rotation of the second rotating disk, o3Is the rotation angle of the third rotating disk, o4The distance of the gear moving along the axial direction of the rectangular groove is defined, in the initial position, the gear is positioned in the middle of the rectangular groove, one side direction is defined to be positive, the other side direction is defined to be negative, and the output value o is obtained4Positive and negative of (d) determines the direction of motion of the gear.
And step two, training the BP neural network.
After the BP neural network node model is established, the training of the BP neural network can be carried out. And obtaining a training sample according to historical experience data of the product, and giving a connection weight between the input node i and the hidden layer node j and a connection weight between the hidden layer node j and the output layer node k.
(1) Training method
Each subnet adopts a separate training method; when training, firstly providing a group of training samples, wherein each sample consists of an input sample and an ideal output pair, and when all actual outputs of the network are consistent with the ideal outputs of the network, the training is finished; otherwise, the ideal output of the network is consistent with the actual output by correcting the weight;
(2) training algorithm
The BP network is trained by using a back Propagation (Backward Propagation) algorithm, and the steps can be summarized as follows:
the first step is as follows: and selecting a network with a reasonable structure, and setting initial values of all node thresholds and connection weights.
The second step is that: for each input sample, the following calculations are made:
(a) forward calculation: for j unit of l layer
In the formula (I), the compound is shown in the specification,
for the weighted sum of the j unit information of the l layer at the nth calculation,
is the connection weight between the j cell of the l layer and the cell i of the previous layer (i.e. the l-1 layer),
is the previous layer (i.e. l-1 layer, node number n)l-1) The operating signal sent by the unit i; when i is 0, order
Is the threshold of the j cell of the l layer.
If the activation function of the unit j is a sigmoid function, then
And is
If neuron j belongs to the first hidden layer (l ═ 1), then there are
If neuron j belongs to the output layer (L ═ L), then there are
(b) And (3) calculating the error reversely:
for output unit
Pair hidden unit
(c) Correcting the weight value:
The third step: inputting a new sample or a new period sample until the network converges, and randomly re-ordering the input sequence of the samples in each period during training.
The BP algorithm adopts a gradient descent method to solve the extreme value of a nonlinear function, and has the problems of local minimum, low convergence speed and the like. A more effective algorithm is a Levenberg-Marquardt optimization algorithm, which enables the network learning time to be shorter and can effectively inhibit the network from being locally minimum. The weight adjustment rate is selected as delta omega ═ JTJ+μI)-1JTe
Wherein J is a Jacobian (Jacobian) matrix of error to weight differentiation, I is an input vector, e is an error vector, and the variable mu is a scalar quantity which is self-adaptive and adjusted and is used for determining whether the learning is finished according to a Newton method or a gradient method.
When the system is designed, the system model is a network which is only initialized, the weight needs to be learned and adjusted according to data samples obtained in the using process, and therefore the self-learning function of the system is designed. Under the condition of appointing learning samples and quantity, the system can carry out self-learning so as to continuously improve the network performance.
When the shower nozzle moves to output position, control electron pressure valve for the water spray pressure in the shower nozzle satisfies:
wherein p is the water spray pressure (Pa) in the spray head, pmaxThe maximum water injection pressure (Pa), p achievable in the spray head0The pressure (Pa) that water in the water pipe directly flows into the spray head without pressurization is adopted, n is the number of water spraying holes on the spray head, T is the temperature (DEG C) near the spray device, and T is the temperature (DEG C) near the spray device0The reference temperature (DEG C), c the smoke concentration (OBS/M) near the spray device, c0Is the standard concentration (OBS/M) of the smoke, R is the radius (cm) of the water pipe at the joint of the spray head and the water pipe, R is the radius (cm) of the water spray hole, e is the base number of the natural logarithm, cjConcentration of j-th gas (ml/ml), cj,0Is the base concentration (ml/ml) of the jth gas, J is the weight of the jth gas, k is the number of gas species, and a + B + … + J +. + M ═ 1.
The temperature near the spraying device is as follows:
the method for the state of the art engine provided by the present invention is further described below with reference to specific examples.
Establish a gallery, and be fixed with this spray set on the gallery ceiling (it should be noted that, under normal conditions, need set up spray set interval side by side, be a straight line to make all places on the gallery all can be drenched by the shower nozzle), in this embodiment, only set up one spray set, and near this spray set simulation experiment, the temperature sensor on the spray set is 8, 8 directions around the shower nozzle promptly. Specific test data are shown in table 1.
TABLE 1 test data
The method of the invention is adopted to determine the position of the spray head, and the water spray pressure in the spray head is determined according to the formula, and the specific test result is shown in table 2.
TABLE 2 test results
As can be seen from Table 2, the method of the present invention can achieve a high-effect fire extinguishing, and it is reasonable to say that the method of the present invention is used.
The control method of the fire-fighting spray device based on the gas sensor, which is designed and developed by the invention, can collect the environment near the spray device, determine the ignition point based on the BP neural network and further determine the position of the spray head. The invention can also accurately control the water spraying pressure in the spray head according to the environment near the spray device, thereby realizing high-efficiency fire extinguishing.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a fire prevention spray set is used in fire control based on gas sensor which characterized in that includes:
the center of the top surface of the base is provided with a rectangular groove, and one side wall of the groove is provided with a rack;
the through groove is rectangular and is arranged in the center of the bottom surface of the groove and penetrates through the bottom surface of the base;
a gear disposed within the groove and engaged with the rack, the gear being axially movable along the groove;
one end of the first connecting arm is rotatably arranged at the center of the bottom surface of the gear through a first rotating disc;
one end of the second connecting arm is rotatably arranged at the other end of the first connecting arm through a second rotating disc;
the spray head is cylindrical, the top surface of the spray head is rotatably arranged at the other end of the second connecting arm through a third rotating disk, and water spray holes are uniformly formed in the bottom surface and the circumferential side surface of the spray head.
2. The gas sensor-based fire protection sprinkler device of claim 1, wherein the first connecting arm comprises:
a first connection portion; and
one end of the second connecting part is fixedly connected with one end of the first connecting part;
one end of the third connecting part is fixedly connected with the other end of the second connecting part;
the first connecting part is perpendicular to the second connecting part, the second connecting part is perpendicular to the third connecting part, and the third connecting part and the first connecting part are respectively arranged on two sides of the second connecting part;
wherein the first connecting arm and the second connecting arm have the same structure.
3. A fire protection sprinkler apparatus based on a gas sensor as claimed in claim 1 or 2, further comprising:
the first motor is arranged on the top surface of the gear, and an output shaft of the first motor is fixedly connected with the gear and used for driving the gear to rotate;
the second motor is arranged on the bottom surface of the gear, and an output shaft of the second motor is fixedly connected with the first rotating disk and used for driving the first rotating disk to rotate;
the third motor is arranged at the other end of the first connecting arm, and an output shaft of the third motor is fixedly connected with the second rotating disc and used for driving the second rotating disc to rotate;
and the fourth motor is arranged at the other end of the two connecting arms, and an output shaft is fixedly connected with the third rotating disk and used for driving the third rotating disk to rotate.
4. A fire protection sprinkler apparatus based on a gas sensor as claimed in claim 3, further comprising:
the water pipe is arranged in the base, the first connecting arm and the second connecting arm, and one end of the water pipe is communicated with the spray head;
the high-pressure water source is communicated with the other end of the water pipe through an electronic pressure valve;
the fixing seats are arranged at four corners of the base;
and the fastening bolt is in threaded connection with the fixed seat and is used for fixing the base.
5. A fire protection sprinkler apparatus based on a gas sensor as claimed in claim 4, further comprising:
the temperature sensors are uniformly arranged on the base and used for detecting the temperature near the spraying device;
the smoke sensor is arranged on the base and used for detecting the smoke concentration near the spraying device;
a flame sensor disposed on the base for detecting the presence of a flame proximate the spray device;
the gas sensor is arranged on the base and used for detecting the components and the concentration of gas near the spraying device;
and the controller is connected with the temperature sensor, the smoke sensor, the flame sensor, the gas sensor, the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve, is used for receiving detection data of the gas sensor of the temperature sensor, the smoke sensor and the flame sensor and controlling the first motor, the second motor, the third motor, the fourth motor and the electronic pressure valve to work.
6. A control method of a fire-fighting fireproof spraying device based on a gas sensor is characterized by collecting the environment near the spraying device and determining the position of a spray head based on a BP neural network, and specifically comprises the following steps:
step one, acquiring the temperature, the smoke concentration, the gas composition and concentration near the spraying device and whether flame exists or not through a sensor according to a sampling period;
step two, determining an input layer neuron vector x ═ x of the three-layer BP neural network1,x2,x3,x4,x5}; wherein x is1Is the temperature, x, in the vicinity of the spray device2Is the concentration of smoke, x, in the vicinity of the spray device3Gas composition x in the vicinity of the spray device4Is the concentration of gas, x, in the vicinity of the spray device5A flame present condition;
wherein the input neuron value x1＝{T1,T2,...,Ti,...,TqIn which T isiThe detected temperature value of the ith temperature sensor is obtained, and q is the number of the temperature sensors; the input neuron value
When x is5When 0, no flame is present, x5When 1, a flame is present;
mapping the input layer vector to a hidden layer, wherein the number of neurons of the hidden layer is m;
step (ii) ofFourthly, obtaining the neuron vector o of the output layer as { o ═ o1,o2,o3,o4}; wherein o is1Is the angle of rotation of the first rotating disk, o2Is the angle of rotation of the second rotating disk, o3Is the rotation angle of the third rotating disk, o4The distance of the gear moving along the axial direction of the rectangular groove is defined, and the gear is positioned in the middle of the rectangular groove in the initial position;
when the spray head moves to an output position, the electronic pressure valve is controlled, so that the water spray pressure in the spray head meets the following requirements:
wherein p is the water spray pressure in the spray head, pmaxFor maximum achievable water spray pressure in the spray head, p0The pressure of water in the water pipe directly flowing into the spray head without pressurization, n is the number of water spraying holes on the spray head, T is the temperature near the spray device, and T is the pressure of water in the water pipe directly flowing into the spray head without pressurization0As reference temperature, c as concentration of mist in the vicinity of the spray device, c0The standard concentration of the smog, R is the radius of the water pipe at the joint of the spray head and the water pipe, R is the radius of the water spraying hole, e is the base number of the natural logarithm, cjIs the concentration of the j-th gas, cj,0Is the base concentration of the jth gas, J is the weight of the jth gas, k is the number of gas species, and a + B + ·+ J + ·+ M ═ 1.
7. The method of claim 6, wherein the temperature in the vicinity of the sprinkler is:
8. the method as claimed in claim 6 or 7, wherein the excitation functions of the hidden layer and the output layer are S-shaped functions fj(x)＝1/(1+e-x)。
9. The control method of the fire-fighting sprinkler device based on the gas sensor as set forth in claim 8, wherein the number m of hidden nodes satisfies:
wherein n is the number of nodes of the input layer, and p is the number of nodes of the output layer.
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| CN110279972B (en) * | 2019-06-28 | 2020-06-26 | 吉林建筑大学 | Fire-fighting monitoring device for electric appliance machine room and control method thereof |
| CN110416644B (en) * | 2019-08-05 | 2023-10-24 | 吉林大学 | Vehicle-mounted early warning device for hidden damage monitoring and thermal runaway of lithium ion power battery and early warning method thereof |
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| JP2633367B2 (en) * | 1989-12-18 | 1997-07-23 | 松下電器産業株式会社 | Gas usage monitoring device |
| CN101972535A (en) * | 2010-02-09 | 2011-02-16 | 丁增辉 | Comprehensive fire control system and method for simulative neural network |
| KR101362400B1 (en) * | 2012-09-04 | 2014-02-14 | 나라방재 주식회사 | Complex fire fighting control system |
| CN107281685A (en) * | 2017-07-03 | 2017-10-24 | 牡丹江师范学院 | A kind of natural gas in home supervising device based on Internet of Things |
| CN107477549B (en) * | 2017-08-31 | 2019-08-06 | 鹤山倍狮科技有限公司 | A kind of fire emergency lamp |
| CN108107856B (en) * | 2017-12-17 | 2020-12-29 | 深圳市众工装饰消防工程有限公司 | On-site monitoring and security control method based on Internet of things |
| CN207970376U (en) * | 2017-12-18 | 2018-10-16 | 西安丁子电子信息科技有限公司 | A kind of fire-fighting robot |
| CN107970545A (en) * | 2017-12-27 | 2018-05-01 | 苏州汇诚智造工业设计有限公司 | A kind of fire fighting truck with multi-direction spraying function and production and preparation method thereof |
| CN108325126A (en) * | 2018-01-18 | 2018-07-27 | 魏文福 | A kind of fire-fighting hand propelled extinguishing device |
| CN108922104B (en) * | 2018-09-12 | 2020-05-15 | 吉林建筑大学 | Control method of factory fire safety monitoring system |
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