CN108490250B - Intelligent building power monitoring method - Google Patents

Intelligent building power monitoring method Download PDF

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Publication number
CN108490250B
CN108490250B CN201810250125.8A CN201810250125A CN108490250B CN 108490250 B CN108490250 B CN 108490250B CN 201810250125 A CN201810250125 A CN 201810250125A CN 108490250 B CN108490250 B CN 108490250B
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rechargeable battery
value
current
matrix
monitoring
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CN108490250A (en
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梁素心
孟佑君
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Wuhan Sanhe Dingsheng Technology Co., Ltd
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Wuhan Sanhe Dingsheng Technology Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00Arrangements for measuring electric power or power factor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00Arrangements for measuring electric power or power factor
    • G01R21/06Arrangements for measuring electric power or power factor by measuring current and voltage

Abstract

In order to provide a reliable power consumption monitoring service, a primary object of the present invention is to provide a smart building power monitoring method, which includes a current sensor for monitoring a current of a line at a monitoring point of power consumption to be monitored and a temperature sensor for detecting a temperature of the line, the current sensor and the temperature sensor being respectively powered by a first rechargeable battery and a second rechargeable battery provided in a power meter, and the first rechargeable battery and the second rechargeable battery being charged in turn, including: (10) for a certain monitoring point in the building, when the residual capacity of the first rechargeable battery is larger than a preset second threshold value, acquiring the electric power consumed by the monitoring point of the intelligent building in a first mode; (20) when the first rechargeable battery residual capacity is smaller than a preset second threshold value, the electric power consumed by the monitoring point is obtained through a second mode.

Description

Intelligent building power monitoring method
Technical Field
The invention belongs to the technical field of electrical monitoring for intelligent buildings, and particularly relates to an intelligent building power monitoring method.
Background
With the development of science and technology, intelligent building management systems are developed more and more rapidly. The existing intelligent building management systems in the market all have respective limitations. At present, most manufacturers adopt a hardware coding scheme for management to realize unidirectional wireless control, and the control result cannot be guaranteed. The method cannot effectively control interference between radios, and cannot well ensure the safety and confidentiality of data. In the aspect of remote control, a wap or web communication mode is generally adopted, so that a user can only operate under one platform, and the operation is inconvenient in the actual operation process. In addition, many developers only consider unilateral control requirements, and remote intelligent control and close-range intelligent remote control in buildings are rarely involved, so that inconvenience is further increased. However, the related art cannot reliably obtain power consumption information.
Disclosure of Invention
In view of the above analysis, in order to provide a reliable power consumption monitoring service, the present invention provides an intelligent building power monitoring method, based on a current sensor for monitoring a current of a line at a monitoring point of power consumption to be monitored and a temperature sensor for detecting a temperature of the line, the current sensor and the temperature sensor being respectively powered by a first rechargeable battery and a second rechargeable battery provided in a power meter, and the first rechargeable battery and the second rechargeable battery being charged in turn, comprising:
(10) for a certain monitoring point in the building, when the residual capacity of the first rechargeable battery is larger than a preset second threshold value, acquiring the electric power consumed by the monitoring point of the intelligent building in a first mode;
(20) when the first rechargeable battery residual capacity is smaller than a preset second threshold value, the electric power consumed by the monitoring point is obtained through a second mode.
Further, the step (10) comprises:
(101) monitoring the output voltage and the output current of the first rechargeable battery;
(102) integrating the voltage value to obtain a voltage integral value;
(103) calculating a first internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a first time;
(104) calculating a second internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a second time;
(105) taking the geometric mean value of the first internal resistance and the second internal resistance as the internal resistance of the first rechargeable battery;
(106) taking the inverse number between the internal resistance of the first rechargeable battery and the voltage integral value as a current integral value;
(107) the remaining capacity of the first rechargeable battery is calculated from the current integration value.
Further, the first manner is to determine the electric power consumed by the monitoring point from the current value detected by the current sensor.
Further, the second mode includes:
(201) when the remaining capacity of a first rechargeable battery is smaller than a first preset threshold value, obtaining the number of N second rechargeable batteries which are nearest to the first rechargeable battery around the first rechargeable battery, wherein the first preset threshold value is larger than a second preset threshold value, and N is a natural number larger than 5;
(202) acquiring a temperature value detected by the temperature sensor through the serial number;
(203) when the first rechargeable battery remaining capacity is less than a second predetermined threshold, the position of the line where the consumed electric power is highest is indirectly obtained based on the temperature information provided by the second rechargeable battery.
Further, the step (203) comprises:
a second rechargeable battery current-temperature state two-dimensional matrix D is constructed as follows:
wherein d isijRepresenting the current, p, of the second rechargeable batteries i and jijRepresenting a temperature state estimate of the second rechargeable battery i versus the second rechargeable battery j at time t;
calculating temperature state estimation p 'of second rechargeable battery i to second rechargeable battery j at time t + 1'ij
Wherein p isjiRepresenting a temperature state estimate of the second rechargeable battery j for the second rechargeable battery i at time t, xi representing a modulus of a diagonal matrix of the matrix D;
in the formula
Let the coordinate to be solved of the ith second rechargeable battery be Xi=(x1,x2,…,xm) M represents the analysis depth and is a natural number greater than 5, where the values of the elements correspond to the values of the second rechargeable battery i adjacent to it according to time tThe current of the second rechargeable battery is arranged from small to large to form a corresponding value, and the coordinate matrix to be solved of the second rechargeable battery with the highest electric power consumption is X ═ X (X is the matrix of the coordinates of the second rechargeable battery with the highest electric power consumption1,X2,…,Xn)T
Wherein g iskRepresents pijCentered on the second rechargeable battery k,Eigenvalues, h, of a matrix of elements in the neighbourhood of the rangekIs represented by p'ijCentered on the second rechargeable battery k,Zeta denotes the characteristic value of a matrix of elements in the neighbourhood of the range, i being less than k and j being less than kijCovariance matrix of constructed matrix and p 'of i less than k and j less than k'ijCovariance matrix of the constructed matrix the geometric mean of the moduli of the two covariance matrices.
The technical scheme of the invention has the following advantages:
the intelligent building power monitoring method can accurately and reliably know the electric power consumed by the monitoring point under the condition that the electric parameter sensor fails, and improves the energy-saving and emission-reducing effects of intelligent buildings and the level of electric safety.
Drawings
Figure 1 shows a flow chart of the present method.
Detailed Description
As shown in fig. 1, the method for monitoring power of a smart building according to the present invention includes a current sensor for monitoring a current of a line at a monitoring point where power consumption is to be monitored, and a temperature sensor for detecting a temperature of the line, wherein the current sensor and the temperature sensor are respectively powered by a first rechargeable battery and a second rechargeable battery disposed in a power meter, and the first rechargeable battery and the second rechargeable battery are alternately charged, the method including:
(10) for a certain monitoring point in the building, when the residual capacity of the first rechargeable battery is larger than a preset second threshold value, acquiring the electric power consumed by the monitoring point of the intelligent building in a first mode;
(20) when the first rechargeable battery residual capacity is smaller than a preset second threshold value, the electric power consumed by the monitoring point is obtained through a second mode.
Preferably, the step (10) comprises:
(101) monitoring the output voltage and the output current of the first rechargeable battery;
(102) integrating the voltage value to obtain a voltage integral value;
(103) calculating a first internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a first time;
(104) calculating a second internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a second time;
(105) taking the geometric mean value of the first internal resistance and the second internal resistance as the internal resistance of the first rechargeable battery;
(106) taking the inverse number between the internal resistance of the first rechargeable battery and the voltage integral value as a current integral value;
(107) the remaining capacity of the first rechargeable battery is calculated from the current integration value.
Preferably, the first manner is to determine the electric power consumed by the monitoring point from the current value detected by the current sensor.
Preferably, the second mode includes:
(201) when the remaining capacity of a first rechargeable battery is smaller than a first preset threshold value, obtaining the number of N second rechargeable batteries which are nearest to the first rechargeable battery around the first rechargeable battery, wherein the first preset threshold value is larger than a second preset threshold value, and N is a natural number larger than 5;
(202) acquiring a temperature value detected by the temperature sensor through the serial number;
(203) when the first rechargeable battery remaining capacity is less than a second predetermined threshold, the position of the line where the consumed electric power is highest is indirectly obtained based on the temperature information provided by the second rechargeable battery.
Preferably, the step (203) comprises:
a second rechargeable battery current-temperature state two-dimensional matrix D is constructed as follows:
wherein d isijRepresenting the current, p, of the second rechargeable batteries i and jijRepresenting a temperature state estimate of the second rechargeable battery i versus the second rechargeable battery j at time t;
calculating temperature state estimation p 'of second rechargeable battery i to second rechargeable battery j at time t + 1'ij
Wherein p isjiRepresenting a temperature state estimate of the second rechargeable battery j for the second rechargeable battery i at time t, xi representing a modulus of a diagonal matrix of the matrix D;
in the formula
Let the coordinate to be solved of the ith second rechargeable battery be Xi=(x1,x2,…,xm) M represents an analysis depth and is a natural number greater than 5, where the values of the respective elements correspond to respective values obtained by arranging the currents of the second rechargeable battery i and the second rechargeable battery adjacent to the second rechargeable battery from small to large at time t, and the coordinate matrix to be obtained as the second rechargeable battery with the highest electric power consumption is X ═ X (X is a natural number greater than 5)1,X2,…,Xn)T
Wherein g iskRepresents pijCentered on the second rechargeable battery k,Eigenvalues, h, of a matrix of elements in the neighbourhood of the rangekIs represented by p'ijCentered on the second rechargeable battery k,Zeta denotes the characteristic value of a matrix of elements in the neighbourhood of the range, i being less than k and j being less than kijCovariance matrix of constructed matrix and p 'of i less than k and j less than k'ijCovariance matrix of the constructed matrix the geometric mean of the moduli of the two covariance matrices.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (1)

1. The utility model provides a wisdom building electric power monitoring method, is based on the current sensor that carries out monitoring to the electric current of circuit and the temperature sensor that detects the temperature of circuit, the circuit is the circuit of the monitoring point department that waits to carry out energy consumption monitoring, current sensor and temperature sensor are respectively by the first rechargeable battery and the second rechargeable battery power supply that set up in the electric power table, and first rechargeable battery and second rechargeable battery are charged in turn, include:
(10) for a certain monitoring point in the building, when the residual capacity of the first rechargeable battery is larger than a preset second threshold value, acquiring the electric power consumed by the monitoring point of the intelligent building in a first mode;
(20) when the first rechargeable battery residual capacity is smaller than a preset second threshold value, obtaining the position of a line with the highest consumed electric power in a second mode;
the step (10) comprises:
(101) monitoring the output voltage and the output current of the first rechargeable battery;
(102) integrating the voltage value to obtain a voltage integral value;
(103) calculating a first internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a first time;
(104) calculating a second internal resistance according to the average value of the voltage value and the current value of the first rechargeable battery in a second time;
(105) taking the geometric mean value of the first internal resistance and the second internal resistance as the internal resistance of the first rechargeable battery;
(106) taking the inverse number between the internal resistance of the first rechargeable battery and the voltage integral value as a current integral value;
(107) calculating a remaining capacity of the first rechargeable battery by a current integration value;
the first way is to determine the electric power consumed by the monitoring point through the current value detected by the current sensor;
the second mode includes:
(201) when the remaining capacity of a first rechargeable battery is smaller than a first preset threshold value, obtaining the number of N second rechargeable batteries which are nearest to the first rechargeable battery around the first rechargeable battery, wherein the first preset threshold value is larger than a second preset threshold value, and N is a natural number larger than 5;
(202) acquiring a temperature value detected by the temperature sensor through the serial number;
(203) indirectly obtaining a location of a line where consumed electric power is highest based on temperature information provided by the second rechargeable battery when the first rechargeable battery remaining amount is less than a second predetermined threshold;
characterized in that said step (203) comprises:
a second rechargeable battery current-temperature state two-dimensional matrix D is constructed as follows:
wherein d isijRepresents the current state estimation, p, of the second rechargeable battery i to the second rechargeable battery j at time tijRepresenting a temperature state estimate of the second rechargeable battery i versus the second rechargeable battery j at time t;
calculating temperature state estimation p 'of second rechargeable battery i to second rechargeable battery j at time t + 1'ij
Wherein p isjiRepresenting a temperature state estimate of the second rechargeable battery j versus the second rechargeable battery i at time t,a modulus value representing a diagonal matrix of matrix D;
in the formula
Let the coordinate to be solved of the ith second rechargeable battery be Xi=(x1,x2,…,xm) M represents an analysis depth and is a natural number greater than 5, where the values of the respective elements correspond to respective values obtained by arranging the currents of the second rechargeable battery i and the second rechargeable battery adjacent to the second rechargeable battery from small to large at time t, and the coordinate matrix to be obtained as the second rechargeable battery with the highest electric power consumption is X ═ X (X is a natural number greater than 5)1,X2,…,Xn)T
Wherein g iskRepresents pijCentered on the second rechargeable battery k,Eigenvalues, h, of a matrix of elements in the neighbourhood of the rangekIs represented by p'ijCentered on the second rechargeable battery k,Zeta denotes the characteristic value of a matrix of elements in the neighbourhood of the range, i being less than k and j being less than kijCovariance matrix of constructed matrix and p 'of i less than k and j less than k'ijCovariance matrix of the constructed matrix the geometric mean of the moduli of the two covariance matrices.
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