CN111884349B - Internet of things fire fighting device supporting wireless charging and electric quantity estimation and management method thereof - Google Patents
Internet of things fire fighting device supporting wireless charging and electric quantity estimation and management method thereof Download PDFInfo
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- CN111884349B CN111884349B CN202010619136.6A CN202010619136A CN111884349B CN 111884349 B CN111884349 B CN 111884349B CN 202010619136 A CN202010619136 A CN 202010619136A CN 111884349 B CN111884349 B CN 111884349B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses an Internet of things fire fighting device supporting wireless charging and an electric quantity estimation and management method thereof, wherein the wireless charging mode is adopted for charging; the device comprises a micro-processing control module, a wireless charging module, a power module, a signal receiving and transmitting processing module and a detection executing module, wherein the wireless charging module, the power module, the signal receiving and transmitting processing module and the detection executing module are connected with the micro-processing control module; the wireless charging module comprises an electric energy receiving unit, a rectifying and filtering unit and a charging control unit; the electromagnetic energy is converted by the electric energy receiving unit; charging the power supply module through the rectifying and filtering unit; the signal receiving and transmitting processing module is used for receiving and transmitting signals of an external Internet of things network; the detection execution module executes a specific function of the fire fighting device. The electric quantity estimation and management method comprises an electric quantity curve equation, rated capacity estimation, an electric quantity alarm process and a charging management process. The invention not only maintains the advantages of convenient construction, comprehensive information acquisition and the like, but also avoids the disassembly of the device during the battery replacement and prolongs the service life of the device.
Description
Technical Field
The invention relates to the technical field of fire control of the Internet of things, in particular to an Internet of things fire control device supporting wireless charging and an electric quantity estimation and management method thereof.
Background
The fire fighting device of the Internet of things mainly comprises an Internet of things fire detector, an Internet of things fire alarm, an Internet of things fire extinguishing facility and the like.
In the prior art, the Internet of things fire detector mainly comprises a smoke detector, a temperature detector, a combustible gas detector and the like; the fire alarm of the Internet of things mainly comprises an audible and visual alarm, a manual alarm button and the like; the fire extinguishing facility of the Internet of things mainly comprises a hydrant, a dry powder fire extinguisher, water spraying and the like.
The fire fighting device of the Internet of things generally adopts a wireless communication mode of the Internet of things, and has the characteristics of no wiring, convenient installation, comprehensive available information and the like.
The fire-fighting device of the Internet of things mainly adopts a battery to supply power, and the battery needs to be replaced after the electric quantity of the battery is exhausted. On the one hand, the battery replacement can not timely influence the normal use of the fire-fighting device of the Internet of things, and on the other hand, the service life of the fire-fighting device of the Internet of things can be influenced by equipment disassembly when the battery is frequently replaced.
Therefore, how to improve the power supply of the fire-fighting device of the Internet of things is a technical problem which needs to be solved by the technicians in the field.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the invention provides the internet of things fire fighting device supporting wireless charging and the electric quantity estimation and management method thereof, and the aim of realizing is to not only keep the advantages of convenient construction, comprehensive information acquisition and the like of the internet of things fire fighting device, but also avoid the disassembly of the device during battery replacement and improve the service life of the device.
In order to achieve the purpose, the invention discloses an Internet of things fire fighting device supporting wireless charging, which adopts a wireless charging mode for charging; the device comprises a wireless charging module, a power module, a micro-processing control module, a signal receiving and transmitting processing module and a detection executing module.
The micro-processing control module is respectively connected with the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, receives and processes various signals of the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, and then sends out instructions to control the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module to work;
the wireless charging module comprises an electric energy receiving unit, a rectifying and filtering unit and a charging control unit; the electric energy receiving unit is used for receiving electromagnetic energy and converting the electromagnetic energy into electric energy; the electric energy receiving unit transmits the electric energy to the rectifying and filtering unit, and the electric energy is converted into continuous and stable current through the rectifying and filtering unit;
the charging control unit is respectively connected with the electric energy receiving unit and the rectifying and filtering unit and controls the electric energy receiving unit and the rectifying and filtering unit to work;
the wireless charging module is connected with the power supply module, and is used for transmitting the continuous and stable current to the power supply module to charge the power supply module;
the power module comprises a rechargeable battery and an electric quantity detection unit;
the signal receiving and transmitting processing module is used for receiving and transmitting signals of an external Internet of things network;
the detection execution module executes specific functions of the fire fighting device, including fire fighting information detection and fire fighting command execution.
Preferably, the various signals include a fire alarm signal, a fire action signal, a power signal, and/or a charging signal.
Preferably, the signaling processing module supports NB-IoT and LoRa wireless internet of things standards.
The invention also provides an electric quantity estimation and management method of the internet of things fire fighting device supporting wireless charging, wherein the electric quantity management comprises an electric quantity alarm flow and a charging management flow; the electric quantity alarm flow is circularly executed for unlimited times, and each time of circularly executed steps are as follows:
step A1, one-time alarm detection; detecting whether the residual electric quantity C (T1) at the moment T1 is larger than the primary alarm electric quantity C L I.e. low-power alarming power; detecting whether the residual electric quantity C (T2) at the moment T2 is smaller than the primary alarm electric quantity C L I.e. low-power alarming power; wherein T1<T2, and (T2-T1) tend to be infinitesimal; when C (T1)>C L And C (T2)<C L Executing the following steps when the method is carried out; if not, repeating the step A1;
step A2, triggering an alarm, namely a low-power alarm; simultaneously feeding back to the charging management platform through the Internet of things network;
step A3, secondary alarm detection; detecting whether the residual electric quantity C (T3) at the moment T3 is larger than the secondary alarm electric quantity C LL I.e. ultra-low power alarmThe method comprises the steps of carrying out a first treatment on the surface of the Detecting whether the residual electric quantity C (T4) at the moment T4 is smaller than the secondary alarm electric quantity C LL I.e. ultra-low electric quantity alarming electric quantity; wherein T3<T4, and (T4-T3) tend to be infinitesimal; when C (T3)>C LL And C (T4)<C LL Executing the following steps when the method is carried out; if not, repeating the step A3;
step A4, triggering a secondary alarm, namely an ultralow electric quantity alarm; and simultaneously feeding back to the charging management platform through the Internet of things network.
The charging management flow comprises the following steps:
step B1, the wireless charging module and the matched wireless charging equipment are successfully detected through communication handshake, if yes, the subsequent steps are executed; if not, and when the time exceeds the preset value, feeding back the handshake failure to the charging management platform through the Internet of things network, and ending the flow;
step B2, detecting electric quantity; detecting whether the remaining capacity C (T6) at the time T6 is larger than the remaining capacity C (T5) at the time T5;
if yes, executing the subsequent steps;
if not, and when the time exceeds the preset value, feeding back the 'charge failure' to the charge management platform through the Internet of things network, and ending the flow;
step B3, feeding the charging to the charging management platform through the Internet of things network;
step B4, detecting whether the remaining capacity C (T7) at the time T7 and the remaining capacity C (T8) at the time T8 are equal to the full-charge state capacity C n The method comprises the steps of carrying out a first treatment on the surface of the If the step is that the subsequent step is executed, if the step is not, feeding back the charging to the charging management platform through the Internet of things network;
and B5, after the charging is completed, feeding back the charging completion to the charging management platform through the Internet of things network, and ending the flow.
The invention has the beneficial effects that:
the application of the invention not only keeps the advantages of convenient construction, comprehensive information acquisition and the like of the fire-fighting device of the Internet of things, but also avoids the disassembly of the device during the replacement of the battery, and prolongs the service life of the device.
The invention also provides an electric quantity change curve (electric quantity curve for short) and an equation (curve equation for short) thereof in the using process of the device, and provides a battery rated electric quantity estimation method and an electric quantity management main program based on the curve equation.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a flow chart illustrating a power alarm process according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating a charge management procedure in an embodiment of the present invention.
Fig. 4 shows a graph of charging and power consumption processes in an embodiment of the invention.
Detailed Description
Examples
As shown in fig. 1, an internet of things fire fighting device supporting wireless charging is charged in a wireless charging manner; the device comprises a wireless charging module, a power module, a micro-processing control module, a signal receiving and transmitting processing module and a detection executing module.
The micro-processing control module is respectively connected with the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, receives and processes various signals of the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, and then sends out instructions to control the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module to work;
the wireless charging module comprises an electric energy receiving unit, a rectifying and filtering unit and a charging control unit; the electric energy receiving unit is used for receiving electromagnetic energy and converting the electromagnetic energy into electric energy; the electric energy receiving unit transmits electric energy to the rectifying and filtering unit, and the electric energy is converted into continuous and stable current through the rectifying and filtering unit;
the charging control unit is respectively connected with the electric energy receiving unit and the rectifying and filtering unit and controls the electric energy receiving unit and the rectifying and filtering unit to work;
the wireless charging module is connected with the power module and is used for transmitting continuous and stable current to the power module to charge the power module;
the power module comprises a rechargeable battery and an electric quantity detection unit;
the signal receiving and transmitting processing module is used for receiving and transmitting signals of an external Internet of things network;
the detection execution module executes specific functions of the fire fighting device, including fire fighting information detection and fire fighting command execution.
The principle of the invention is as follows:
1. electric quantity curve and equation thereof:
the electric quantity curve is mainly a relation between the remaining electric quantity C and the time T, and is divided into a power consumption stage and a charging stage, and the power consumption stage and the charging stage are alternately performed, as shown in FIG. 4.
C n Rated electric quantity of rechargeable battery (simply called rated electric quantity), C L C is the residual electric quantity of the first alarm (short for the first alarm electric quantity) LL C is the residual electric quantity of the second alarm (called as the secondary alarm electric quantity for short) b To start the charge of the remaining capacity (simply referred to as the start charge remaining capacity).
Rated power C n Typically a factory fixed value, can be estimated by a certain method.
Primary alarm electric quantity C L Secondary alarm electric quantity C LL Typically can be programmed to a fixed value, closely related to power management.
Charge starting residual quantity C b Typically a dynamic value, which is subject to change by the charge scheduling plan, typically C LL ≤C b ≤C L . When C b <C LL When the battery is charged, the battery should be charged immediately.
T n (i-1) is the time corresponding to the (i-1) th full charge, and is also the time when the i-th power consumption process starts.
T n (i) The time corresponding to the i-th full charge is also the (i+1) -th power consumption process start time.
T L (i) One-time alarm electric quantity C for ith power consumption process L The corresponding time (abbreviated as one alarm time) is also the earliest start time of the ith charge.
T LL (i) Secondary alarm electric quantity C for ith power consumption process LL The corresponding time (called the secondary alarm time for short) is also the latest start time of the ith charge.
T b (i) For the ith initial charge remaining capacity C b The corresponding time, i.e. the i-th execution charge start time (simply called start charge time), is typically T L (i)≤T b (i)≤T LL (i)。
(1) The power consumption curve equation (Tn (i-1) is more than or equal to T and less than or equal to Tb (i));
C＝C n -(C s +C f ) (equation 1);
C s ＝I s ×(T- T n (i-1)) (formula 2);
C f ＝ I f ×(T- T n (i-1)) ×α (i) (formula 3);
wherein:
c: residual capacity, unit: mAh;
C n : rated power, unit: mAh;
C s : static working power consumption, unit: mAh;
C f : fire alarm or fire action power consumption, unit: mAh;
I s : static working average current, unit: mA;
I f : average current for fire alarm or fire action, unit: mA;
t: time, unit: h, performing H;
T n (i-1): the corresponding time of the (i-1) th full charge, namely the starting time of the ith power consumption process, is as follows: h, performing H;
α(i)：(T-T n (i-1)) the proportion of time that the fire alarm or fire action takes up during the time period (i.e., the power consumption phase);
(2) A charging curve equation (Tb (i) is more than or equal to T is more than or equal to Tn (i));
C＝C b -C s -C f +C c (equation 4);
C s ＝I s ×(T- T b (i) (equation 5);
C f ＝ I f × (T- T b (i) X β (i) (formula 6);
C c ＝I c ×(T- T b (i) (equation 7);
wherein:
c: residual capacity, unit: mAh;
C b : starting to charge the remaining power, unit: mAh;
C s : static working power consumption, unit: mAh;
C f : fire alarm or fire action power consumption, unit: mAh;
C c : charge amount, unit: mAh;
I s : static working average current, unit: mA;
I f : average current for fire alarm or fire action, unit: mA;
I c : charging average current, unit: mA;
t: time, unit: h, performing H;
T b (i) The method comprises the following steps The i-th execution charge start time;
β(i)：(T-T b (i) A time period (i.e., a charging phase) a fire alarm or a proportion of time occupied by a fire action.
2. Method for estimating rated power of battery
(1)C n Estimating:
at the power consumption stage, let T n (i-1) =0, i.e., origin on the charge curve (fig. 4), and substituting equations 1 to 3 has:
C n ＝ C+ I s ×T+ I f x T x α (i) (formula 8);
let the residual electric quantity C take the minimum value: c=0, i.e. battery charge is depleted, and substituting equation 8 has:
C n ＝(I s +I f x α (i))xt (formula 9);
in formula 9, I s I f The characteristics of the fire fighting device of the Internet of things are determined, and the fire fighting device can be generally obtained through experiments. Alpha (i) is related to the fire alarm or the fire operation frequency of the ith power consumption process, and C is performed n For estimation, α (i) =α can be obtained by taking an average value by statistics.
To sum up, assigning t=t0 to T can obtain C n Estimated values, namely:
C n ＝(I s +I f x α) x T0 (formula 10);
(2) Charging time estimation:
in the charging stage, the remaining charge C is started b Taking the minimum value: c (C) b =0, i.e. the remaining capacity at the start of charging is 0; letting the residual electric quantity C take the maximum value: c=c n I.e. full of electricity; let Δt= (T-T b (i) I.e., charging time, respectively substituted into equations 4 to 7:
ΔT＝C n /(I c -I s -I f x β (i)) (formula 11);
in formula 11, I s I f The characteristics of the fire fighting device of the Internet of things are determined, and the fire fighting device can be generally obtained through experiments. Beta (i) is related to the fire alarm or fire action frequency of the ith charging process, and when Δt is estimated, β (i) =β can be generally obtained by taking an average value through statistics. I c The method has a certain relation with battery materials, charging technology and the like, is generally approximate to a fixed value in the charging process, and can be obtained through related data when performing delta T estimation.
To sum up, when C n After the determination, an estimate of Δt can be obtained, namely:
ΔT＝C n /(I c -I s -I f x beta) (formula 12);
3. estimation analysis:
in formula 10, T0 is a time assignment of the power consumption process when the remaining power is 0 (c=0), and is the longest duration of the power consumption process, that is, a time interval macroscopically reflecting the adjacent two charges.
Equation 12The preconditions for Δt estimation are: when the charge process is from the remaining capacity to 0 (C b Start until the charge is full (c=c=0) n ) Thus Δt is the longest time required for full charge, i.e. macroscopically reflecting the longest time per charge. According to the formula, when other conditions are certain, deltaT is mainly controlled by C n Influence.
By combining equations 10 and 12, if the time assignment T0 is too large, this will result in C n Too large further results in too large Δt, i.e., each charging time is too long from a macroscopic point of view, reducing charging efficiency, and battery sizing is uneconomical. If the time assignment T0 is too small, the time interval between two adjacent charges is too short, so that frequent charges are caused, and the operation and maintenance cost is increased.
In addition, due to the primary alarm electric quantity C L Secondary alarm electric quantity C LL The actual time per charge should be less than deltat and the amount of charge C can be alerted by one time L Secondary alarm electric quantity C LL Different values are set, and the time required by each full charge is reasonably adjusted.
As shown in fig. 2 and 3, the invention further provides an internet of things fire fighting device supporting wireless charging and a method for estimating and managing electric quantity thereof, wherein the method comprises an electric quantity alarming process and a charging management process; the electric quantity alarm flow is circularly executed for unlimited times, and each time of circularly executed steps are as follows:
step A1, one-time alarm detection; detecting whether the residual electric quantity C (T1) at the moment T1 is larger than the primary alarm electric quantity C L I.e. low-power alarming power; detecting whether the residual electric quantity C (T2) at the moment T2 is smaller than the primary alarm electric quantity C L I.e. low-power alarming power; wherein T1<T2, and (T2-T1) tend to be infinitesimal; when C (T1)>C L And C (T2)<C L Executing the following steps when the method is carried out; if not, repeating the step A1;
step A2, triggering an alarm, namely a low-power alarm; simultaneously feeding back to the charging management platform through the Internet of things network;
step A3, secondary alarm detection; detecting whether the residual electric quantity C (T3) at the moment T3 is larger than the secondary alarm electric quantity C LL I.e. ultra-low battery reportAlarming electricity quantity; detecting whether the residual electric quantity C (T4) at the moment T4 is smaller than the secondary alarm electric quantity C LL I.e. ultra-low electric quantity alarming electric quantity; wherein T3<T4, and (T4-T3) tend to be infinitesimal; when C (T3)>C LL And C (T4)<C LL Executing the following steps when the method is carried out; if not, repeating the step A3;
step A4, triggering a secondary alarm, namely an ultralow electric quantity alarm; and simultaneously feeding back to the charging management platform through the Internet of things network.
In some embodiments, the steps of the charge management flow are as follows:
step B1, the wireless charging module and the matched wireless charging equipment are successfully detected through communication handshake, if yes, the subsequent steps are executed; if not, and when the time exceeds the preset value, feeding back the handshake failure to the charging management platform through the Internet of things network, and ending the flow;
step B2, detecting electric quantity; detecting whether the remaining capacity C (T6) at the time T6 is larger than the remaining capacity C (T5) at the time T5;
if yes, executing the subsequent steps;
if not, and when the time exceeds the preset value, feeding back the 'charge failure' to the charge management platform through the Internet of things network, and ending the flow;
step B3, feeding the charging to the charging management platform through the Internet of things network;
step B4, detecting whether the remaining capacity C (T7) at the time T7 and the remaining capacity C (T8) at the time T8 are equal to the full-charge state capacity C n The method comprises the steps of carrying out a first treatment on the surface of the If the step is that the subsequent step is executed, if the step is not, feeding back the charging to the charging management platform through the Internet of things network;
and B5, after the charging is completed, feeding back the charging completion to the charging management platform through the Internet of things network, and ending the flow.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (2)
1. The method for estimating and managing the electric quantity of the fire-fighting device of the Internet of things supporting wireless charging is applied, and the wireless charging mode is adopted for charging; the method is characterized in that: the device comprises a wireless charging module, a power module, a micro-processing control module, a signal receiving and transmitting processing module and a detection executing module;
the micro-processing control module is respectively connected with the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, receives and processes various signals of the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module, and then sends out instructions to control the wireless charging module, the power supply module, the signal receiving and transmitting processing module and the detection executing module to work;
the various signals include a fire alarm signal, a fire action signal, an electrical quantity signal and/or a charging signal;
the signal receiving and transmitting processing module supports NB-IoT and LoRa wireless internet of things standards;
the wireless charging module comprises an electric energy receiving unit, a rectifying and filtering unit and a charging control unit; the electric energy receiving unit is used for receiving electromagnetic energy and converting the electromagnetic energy into electric energy; the electric energy receiving unit transmits the electric energy to the rectifying and filtering unit, and the electric energy is converted into continuous and stable current through the rectifying and filtering unit;
the charging control unit is respectively connected with the electric energy receiving unit and the rectifying and filtering unit and controls the electric energy receiving unit and the rectifying and filtering unit to work;
the wireless charging module is connected with the power supply module, and is used for transmitting the continuous and stable current to the power supply module to charge the power supply module;
the power module comprises a rechargeable battery and an electric quantity detection unit;
the signal receiving and transmitting processing module is used for receiving and transmitting signals of an external Internet of things network;
the detection execution module executes specific functions of the fire fighting device, including fire fighting information detection and fire fighting command execution;
the electric quantity estimation and management method comprises an electric quantity alarm process and a charging management process; the electric quantity alarming process is circularly executed for unlimited times;
the power consumption curve equation (Tn (i-1) is more than or equal to T and less than or equal to Tb (i));
C＝C n -(C s +C f )；
C s ＝I s ×(T-T n (i-1))；
C f ＝I f ×(T-T n (i-1))×α(i)；
a charging curve equation (Tb (i) is more than or equal to T is more than or equal to Tn (i));
C＝C b -C s -C f +C c ；
C s ＝I s ×(T-T b (i))；
C f ＝I f ×(T-T b (i))×β(i)；
C c ＝I c ×(T-T b (i))；
rated battery C n Estimating:
C n ＝C+I s ×T+I f ×T×α(i)；
let the residual electric quantity C take the minimum value: c=0, i.e. when the battery is depleted:
C n ＝(I s +I f ×α(i))×T；
assigning t=t0 to T to obtain C n Estimation value:
C n ＝(I s +I f ×α)×T0；
charging time estimation:
ΔT＝C n /(I c -I s -I f ×β(i))；
when C n After the determination, an estimate of Δt can be obtained, namely:
ΔT＝C n /(I c -I s -I f ×β)；
wherein, C is the residual electric quantity, and the unit is mAh;
C n rated electric quantity is given as mAh;
C s the power consumption is static work power consumption, and the unit is mAh;
C f the power consumption is mAh for fire alarm or fire action;
I s the unit is mA, which is the static working average current;
I f the unit is mA for the average current of fire alarm or fire action;
t is time, and the unit is h;
T n (i-1) is the corresponding time of the (i-1) th full charge, namely the starting time of the ith power consumption process, and the unit is h;
alpha (i) is (T-T) n (i-1)) time period, i.e., the proportion of time occupied by fire alarms or fire actions in the power consumption phase;
c is the residual electric quantity, and the unit is mAh;
C b in order to start charging the residual electric quantity, the unit is mAh;
C s the power consumption is static work power consumption, and the unit is mAh;
C f the power consumption is mAh for fire alarm or fire action;
C c the unit is mAh for charging electric quantity;
I s the unit is mA, which is the static working average current;
I f the unit is mA for the average current of fire alarm or fire action;
I c the charging average current is mA;
t is time, and the unit is h;
T b (i) A charge start time for the i-th execution;
beta (i) is (T-T) b (i) A time period, i.e., a proportion of time occupied by a fire alarm or fire action at the charging stage;
the steps performed for each cycle are as follows:
step A1, one-time alarmDetecting; detecting whether the residual electric quantity C (T1) at the moment T1 is larger than the primary alarm electric quantity C L I.e. low-power alarming power; detecting whether the residual electric quantity C (T2) at the moment T2 is smaller than the primary alarm electric quantity C L I.e. low-power alarming power; wherein T1<T2, and (T2-T1) tend to be infinitesimal; when C (T1)>C L And C (T2)<C L Executing the following steps when the method is carried out; if not, repeating the step A1;
step A2, triggering an alarm, namely a low-power alarm; simultaneously feeding back to the charging management platform through the Internet of things network;
step A3, secondary alarm detection; detecting whether the residual electric quantity C (T3) at the moment T3 is larger than the secondary alarm electric quantity C LL I.e. ultra-low electric quantity alarming electric quantity; detecting whether the residual electric quantity C (T4) at the moment T4 is smaller than the secondary alarm electric quantity C LL I.e. ultra-low electric quantity alarming electric quantity; wherein T3<T4, and (T4-T3) tend to be infinitesimal; when C (T3)>C LL And C (T4)<C LL Executing the following steps when the method is carried out; if not, repeating the step A3;
step A4, triggering a secondary alarm, namely an ultralow electric quantity alarm; and simultaneously feeding back to the charging management platform through the Internet of things network.
2. The method for estimating and managing the electric quantity of the fire fighting device of the internet of things with wireless charging support according to claim 1, wherein the charging management flow comprises the following steps:
step B1, the wireless charging module and the matched wireless charging equipment are successfully detected through communication handshake, if yes, the subsequent steps are executed; if not, and when the time exceeds the preset value, feeding back the handshake failure to the charging management platform through the Internet of things network, and ending the flow;
step B2, detecting electric quantity; detecting whether the remaining capacity C (T6) at the time T6 is larger than the remaining capacity C (T5) at the time T5;
if yes, executing the subsequent steps;
if not, and when the time exceeds the preset value, feeding back the 'charge failure' to the charge management platform through the Internet of things network, and ending the flow;
step B3, feeding the charging to the charging management platform through the Internet of things network;
step B4, detecting whether the remaining capacity C (T7) at the time T7 and the remaining capacity C (T8) at the time T8 are equal to the full-charge state capacity C n The method comprises the steps of carrying out a first treatment on the surface of the If the step is that the subsequent step is executed, if the step is not, feeding back the charging to the charging management platform through the Internet of things network;
and B5, after the charging is completed, feeding back the charging completion to the charging management platform through the Internet of things network, and ending the flow.
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| KR20070015264A (en) * | 2005-07-30 | 2007-02-02 | 엘에스전선 주식회사 | Rechargeable power supply, battery device, contact-less charger systems and method for charging rechargeable battery cell |
| CN104868568A (en) * | 2015-05-06 | 2015-08-26 | 镇江市高等专科学校 | Mobile phone-controlled electric vehicle charger |
| CN205084296U (en) * | 2015-11-07 | 2016-03-16 | 方有菊 | Fire hydrant situation early -warning terminal with wireless function of charging |
| CN207427344U (en) * | 2017-10-23 | 2018-05-29 | 深圳市鼎启科技有限公司 | A kind of wireless charging video doorbell |
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| KR20070015264A (en) * | 2005-07-30 | 2007-02-02 | 엘에스전선 주식회사 | Rechargeable power supply, battery device, contact-less charger systems and method for charging rechargeable battery cell |
| CN104868568A (en) * | 2015-05-06 | 2015-08-26 | 镇江市高等专科学校 | Mobile phone-controlled electric vehicle charger |
| CN205084296U (en) * | 2015-11-07 | 2016-03-16 | 方有菊 | Fire hydrant situation early -warning terminal with wireless function of charging |
| CN207427344U (en) * | 2017-10-23 | 2018-05-29 | 深圳市鼎启科技有限公司 | A kind of wireless charging video doorbell |
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