CN114268161B - Multi-stage super-capacity super-capacitor stable power supply method for integrated sensor of power transmission line - Google Patents

Multi-stage super-capacity super-capacitor stable power supply method for integrated sensor of power transmission line Download PDF

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CN114268161B
CN114268161B CN202210194812.9A CN202210194812A CN114268161B CN 114268161 B CN114268161 B CN 114268161B CN 202210194812 A CN202210194812 A CN 202210194812A CN 114268161 B CN114268161 B CN 114268161B
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energy storage
storage capacitor
charging
power
voltage
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CN114268161A (en
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李鹏
王志明
田兵
樊灵孟
韦杰
李立浧
杨泽明
姚森敬
张佳明
陈仁泽
聂少雄
谭则杰
孙宏棣
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Southern Power Grid Digital Grid Research Institute Co Ltd
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Abstract

The application relates to a stable power supply method for a multi-stage super-large-capacity super capacitor of an integrated sensor of a power transmission line. The method comprises the steps of obtaining charging voltage obtained by a power taking device from a power transmission line, charging each energy storage capacitor in an energy storage capacitor group by the charging voltage if the charging voltage is in a preset voltage range, and controlling a target load energy storage capacitor in each load energy storage capacitor to supply power to a sensor on the power transmission line if the charging voltage is not in the voltage range. According to the method, when the energy storage capacitor supplies power to the integrated sensor, the power supply efficiency and the power supply stability of the energy storage capacitor are improved, and the normal operation of the sensor is ensured.

Description

Multi-stage super-capacity super-capacitor stable power supply method for integrated sensor of power transmission line
Technical Field
The application relates to the technical field of power electronics, in particular to a stable power supply method for a multi-stage super-large-capacity super capacitor of an integrated sensor of a power transmission line.
Background
In order to meet the construction requirements of a novel power system, a sensor is generally used for collecting operation information of key nodes of a power transmission line system. While the sensor does not operate with the power requirements.
Taking an integrated sensor on a power transmission line as an example, at present, the power supply of the integrated sensor on the power transmission line adopts electromagnetic induction to obtain energy from the power transmission line, and an alternating magnetic field in the power transmission line is converted into electric energy to supply power to the integrated sensor; and when the integrated sensor is powered, redundant electric energy can be stored through the energy storage capacitor, so that the stored electric energy is used for supplying power to the sensor when the power is not sufficiently taken from the power transmission line.
However, when the energy storage capacitor supplies power to the integrated sensor, the power supply efficiency is low and the power supply is not stable enough, which affects the normal operation of the sensor.
Disclosure of Invention
Therefore, it is necessary to provide a stable power supply method for a multi-stage super-capacitor with extra large capacity of an integrated sensor of a power transmission line, which can improve the power supply efficiency and power supply stability of an energy storage capacitor and ensure the normal operation of the sensor when the energy storage capacitor supplies power to the integrated sensor.
In a first aspect, the present application provides a method for powering a sensor, the method comprising:
acquiring charging voltage acquired by an electricity acquiring device from a power transmission line;
if the charging voltage is in a preset voltage range, charging each energy storage capacitor in the energy storage capacitor group by the charging voltage; the energy storage capacitor bank comprises at least two load energy storage capacitors;
and if the charging voltage is not in the voltage range, controlling a target load energy storage capacitor in each load energy storage capacitor to supply power to a sensor on the power transmission line, wherein the target load energy storage capacitor is a non-charging and full-power load energy storage capacitor.
In one embodiment, the at least two load energy storage capacitors comprise a main load energy storage capacitor and a standby load energy storage capacitor;
the control is loaded the sensor power supply on the transmission line to the target in each load energy storage electric capacity, includes:
if the main load energy storage capacitor is in a non-charging and full-charging state, determining that the main load energy storage capacitor is the target load energy storage capacitor, and controlling the main load energy storage capacitor to supply power to the sensor;
and if the main load energy storage capacitor is in a charging state and/or a non-full-charge state and the standby load energy storage capacitor is in a non-charging and full-charge state, determining that the standby load energy storage capacitor is the target load energy storage capacitor and controlling the standby load energy storage capacitor to supply power to the sensor.
In one embodiment, the charging and discharging priority of the main load energy storage capacitor is greater than that of the standby load energy storage capacitor;
the energy storage capacitor in the energy storage capacitor group is charged with the charging voltage, which comprises:
if the main load energy storage capacitor is in a non-full-power state, charging the main load energy storage capacitor by using the charging voltage;
and if the main load energy storage capacitor is in a full-charge state and the standby load energy storage capacitor is in a non-full-charge state, charging the standby load energy storage capacitor by using the charging voltage.
In one embodiment, the energy storage capacitor bank further comprises a power supply energy storage capacitor, and the charging priority of the power supply energy storage capacitor is greater than that of each load energy storage capacitor;
charging each energy storage capacitor in the energy storage capacitor group with charging voltage, including:
if the power supply energy storage capacitor is in a non-full state, charging the power supply energy storage capacitor by using charging voltage;
and after the power supply energy storage capacitor is fully charged, sequentially charging the load energy storage capacitors according to the charging priority of the load energy storage capacitors.
In one embodiment, acquiring a charging voltage acquired by the power acquisition device from the power transmission line includes:
acquiring energy-taking voltage from the power transmission line through an energy-taking device arranged on the power transmission line;
rectifying the energy-taking voltage to obtain a rectified voltage;
and filtering the rectified voltage to obtain the charging voltage.
In one embodiment, the power taking device comprises a bidirectional thyristor, and the method further comprises:
the conduction time of the bidirectional controllable silicon is controlled by adjusting the duty ratio of output pulse width modulation of the power taking device;
the conduction time of the bidirectional controllable silicon is used for balancing supply and demand among the voltage required by the sensor, the energy obtaining voltage and the voltage required by the energy storage capacitor bank.
In one embodiment, if the charging voltage is in a preset voltage range, determining that the state of the power taking device for taking energy from the power transmission line is a sufficient energy taking state, and supplying power to the sensor by using the charging voltage;
if the charging voltage is not in the voltage range, determining that the state of the power taking device for taking energy from the power transmission line is an energy taking insufficient state or an energy taking overlarge state; under the condition of insufficient energy taking, the charging voltage and the target load energy storage capacitor jointly supply power to the sensor; and controlling the target load energy storage capacitor to supply power to the sensor under the condition of excessive energy taking.
In a second aspect, the present application also provides a sensor power supply apparatus, comprising:
the acquisition module is used for acquiring charging voltage acquired by the power acquisition device from the power transmission line;
the charging module is used for charging each energy storage capacitor in the energy storage capacitor group by using the charging voltage if the charging voltage is in a preset voltage range; the energy storage capacitor bank comprises at least two load energy storage capacitors;
and the power supply module is used for controlling a target load energy storage capacitor in the load energy storage capacitors to supply power to the sensor on the power transmission line if the charging voltage is not in the voltage range, wherein the target load energy storage capacitor is a load energy storage capacitor in a non-charging state and a full-power state.
In a third aspect, an embodiment of the present application provides a computer device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements, when executing the computer program, the steps of any one of the methods provided in the embodiment of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the methods provided in the embodiments of the first aspect.
In a fifth aspect, the present application provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of any one of the methods provided in the embodiments of the first aspect.
According to the stable power supply method for the multistage super-capacitor with the extra-large capacity of the integrated sensor of the power transmission line, the charging voltage acquired by the power acquisition device from the power transmission line is acquired, if the charging voltage is within a preset voltage range, the charging voltage is used for charging each energy storage capacitor in the energy storage capacitor bank, and if the charging voltage is not within the voltage range, the target load energy storage capacitors in the load energy storage capacitors are controlled to supply power to the sensor on the power transmission line. According to the method, the power taking device takes power for the power transmission line to obtain charging voltage, the charging voltage is compared with a preset voltage range, if the charging voltage is in the preset voltage range, the micro control unit charges each energy storage capacitor in the energy storage capacitor group with the charging voltage, the energy storage capacitors can be charged for each load because the energy storage capacitor group at least comprises two load energy storage capacitors, when the energy storage capacitor group is used for supplying power for a sensor, the micro control unit controls the load energy storage capacitors in a non-charging state and a full-power state to supply power for the sensor, so that at least one energy storage capacitor can be ensured to be in the full-power state by installing the at least two load energy storage capacitors, the load energy storage capacitor in the full-power state is used as a target load energy storage capacitor to supply power for the sensor of the power transmission line, and the stability of power supply of the sensor is ensured; moreover, the load energy storage capacitors cannot be charged and powered at the same time, so that at least two load energy storage capacitors are installed, at least one load energy storage capacitor can be in a full state, when the sensor needs to be powered, the load energy storage capacitor in the full state is determined as a target energy storage capacitor to power the sensor, and the power supply efficiency of the load energy storage capacitors is improved; in addition, the two load energy storage capacitors can be alternately in a charging and discharging state, the load energy storage capacitors are prevented from being overheated under the condition of charging and discharging at the same time, and the service life of the load energy storage capacitors is prolonged.
Drawings
FIG. 1 is a diagram of an exemplary sensor power supply system;
FIG. 2 is a schematic flow chart of a method for powering a sensor according to one embodiment;
FIG. 3 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 4 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 5 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 6 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 7 is a schematic structural diagram of a power gripper apparatus according to an embodiment;
FIG. 8 is a schematic diagram of a power supply method for a sensor according to an embodiment;
FIG. 9 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 10 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 11 is a schematic flow chart of a method for powering a sensor in another embodiment;
FIG. 12 is a block diagram showing the structure of a sensor power supply device according to an embodiment;
fig. 13 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The sensor power supply method provided by the embodiment of the application can be applied to the application environment as shown in fig. 1. The power transmission line is connected with the power taking device, for example, the power taking device is hung on the power transmission line, the power taking device is directly installed on the surface of the power transmission line, the power taking device is connected with the micro control unit in a serial port mode, the micro control unit is connected with the sensor through a wire, electric energy obtained by the power taking device is supplied to the sensor through the micro control unit, meanwhile, the micro control unit is connected with each load energy storage capacitor in the energy storage capacitor bank through the wire, and each load energy storage capacitor in the energy storage capacitor bank is controlled to perform charging and discharging operations.
Wherein, the Micro Control Unit (MCU), also called Single Chip Microcomputer (Single Chip Microcomputer) or Single Chip Microcomputer, properly reduces the frequency and specification of the Central Processing Unit (CPU), and integrates the peripheral interfaces of memory, counter, Universal Serial Bus (USB), digital-to-analog conversion, etc., even the liquid crystal display driving circuit on a Single Chip to form a Chip-level computer; the energy storage capacitor can be a super energy storage capacitor; the load energy storage capacitor is an energy storage capacitor in a load loop of the sensor and can supply power to the sensor; the sensors can be various sensors integrated with the power transmission line, including an air pressure sensor, a temperature and humidity sensor, an acceleration sensor and the like.
The embodiment of the application provides a stable power supply method for a multi-stage super-capacitor with extra large capacity of an integrated sensor of a power transmission line, which can improve the power supply efficiency and power supply stability of an energy storage capacitor and ensure the normal operation of the sensor when the energy storage capacitor supplies power to the integrated sensor.
The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application.
In an embodiment, taking the application environment in fig. 1 as an example, a method for supplying power to a sensor is provided, where the embodiment relates to a specific process of charging energy storage capacitors and controlling target load energy storage capacitors in the load energy storage capacitors to supply power to the sensor on a power transmission line according to a charging voltage obtained by a power taking device from the power transmission line and a preset voltage range, as shown in fig. 2, the embodiment includes the following steps:
s201, acquiring charging voltage acquired by the power acquisition device from the power transmission line.
The transmission line is realized by using a transformer to boost the electric energy generated by the generator and then connecting the electric energy to the transmission line through control equipment such as a breaker and the like; the transmission lines are divided into overhead transmission lines and cable lines.
The power taking device is a novel induction power taking device which obtains electric energy by utilizing electromagnetic energy induced around a power transmission line, and can provide electric energy for load equipment around the power transmission line by converting the electromagnetic energy around the power transmission line into electric energy.
Alternatively, the electricity taking device may be directly suspended on the power transmission line or directly installed in a cable trench of the power transmission line, and the electricity taking device may include an energy taking coil, a magnetic core, and the like.
Therefore, the power taking device can take energy from the power transmission line to obtain the charging voltage, and the charging voltage is the voltage obtained by the power taking device from the power transmission line.
The method for obtaining the charging voltage of the power taking device from the power transmission line may be that the power taking device is directly installed on the power transmission line, and electromagnetic induction is generated between alternating current flowing through the power transmission line and the power taking device to convert electromagnetic energy around the power transmission line into electric energy, so as to obtain the charging voltage of the power taking device from the power transmission line.
S202, if the charging voltage is in a preset voltage range, charging each energy storage capacitor in the energy storage capacitor group by the charging voltage; the energy storage capacitor bank comprises at least two load energy storage capacitors.
The energy storage capacitor is a device for accommodating charges, can be a super energy storage capacitor, is a power supply which is arranged between a traditional capacitor and a battery and has special performance, and mainly stores electric energy by electric double layers and redox pseudocapacitance charges, but does not generate chemical reaction in the energy storage process, and the energy storage process is reversible and can be repeatedly charged and discharged for tens of thousands of times.
Optionally, the super storage capacitor comprises an electric double layer capacitor and a faraday capacitor.
The energy storage capacitor group is composed of a plurality of energy storage capacitors and comprises at least two load energy storage capacitors, and the load energy storage capacitors can supply power to load equipment.
The preset voltage range is a preset voltage variation range, and if the charging voltage is in the preset voltage range, the micro-control unit charges each energy storage capacitor in the energy storage capacitor group with the charging voltage.
The charging voltage obtained by the electricity taking device from the power transmission line is used for supplying power to load equipment around the power transmission line, and because the lead current of the power transmission line can change along with the change of the load on the power utilization side, when the lead current is large, the charging voltage obtained by the electricity taking device from the power transmission line is large, and the micro control unit can charge the energy storage capacitor bank by the charging voltage.
For example, if the charging voltage is 20V and the preset voltage range is 12.5V to 30V, the charging voltage is in the preset voltage range, and the micro control unit stores the redundant electric energy into each energy storage capacitor of the energy storage capacitor bank while the power taking device supplies power to the sensor.
Optionally, whether the charging voltage is in a preset voltage range may be determined by a voltage comparator; the voltage comparator is a hardware integrated circuit having a large ratio of two analog voltages, and thus, it is possible to determine whether the charging voltage is in a preset voltage range by installing two voltage comparators.
And S203, if the charging voltage is not in the voltage range, controlling a target load energy storage capacitor in the load energy storage capacitors to supply power to a sensor on the power transmission line, wherein the target load energy storage capacitor is a non-charging and full-power load energy storage capacitor.
A sensor is arranged on the power transmission line, and the on-line monitoring of the power transmission line can be realized through the sensor; the construction of a novel electric power system requires that the sensor is suitable for mass deployment, and the sensor has the characteristics of self energy taking, low cost, low power consumption, intellectualization and the like which are suitable for mass deployment besides the common performances of high precision, high reliability and the like.
Optionally, the sensor may be an integrated sensor, and the integrated sensor may adopt an electromagnetic induction energy obtaining and super capacitor energy storage mode to convert a wire alternating magnetic field into electric energy to supply power to the sensor, thereby ensuring normal operation of the sensor. And the electromagnetic induction energy taking and super capacitor energy storage modes have the advantages of small volume, high power, good insulativity, convenience in installation and maintenance and the like.
Generally, only a single super energy storage capacitor is installed in an integrated sensor, and if the sensor is powered when the energy storage capacitor is not fully charged, the amplitude of the discharge voltage will rapidly decrease with time, which may cause unstable power supply, and even may generate a voltage spike, which affects the normal operation of the sensor. In addition, the energy storage capacitor is charged and discharged at the same time, so that overheating is easily caused, and the service life of the capacitor is shortened; therefore, the sensor is controlled to be supplied with power after the energy storage capacitor is fully charged, but the energy storage capacitor cannot be charged while power is supplied, and the power supply efficiency of the energy storage capacitor is reduced.
Therefore, a plurality of load energy storage capacitors are installed in the embodiment, when the charging voltage is not in the voltage range, the load energy storage capacitors in the non-charging state and the full-power state are controlled to supply power to the sensor on the power transmission line, the energy storage capacitors are prevented from being in the charging and discharging state at the same time, and the service life of the capacitors is prolonged.
Optionally, if the charging voltage is 10V and the preset voltage range is 12.5V-30V, it may be determined that the charging voltage is not in the voltage range; if the charging voltage is 32V and the preset voltage range is 12.5V-30V, it can be determined that the charging voltage is not in the voltage range. It should be noted that the manner of determining whether the charging voltage is within the preset voltage range may be the same as that in the above embodiment, and details are not described herein.
According to the sensor power supply method, the charging voltage of the power taking device for taking energy from the power transmission line is obtained, if the charging voltage is within the preset voltage range, the charging voltage is used for charging each energy storage capacitor in the energy storage capacitor group, and if the charging voltage is not within the voltage range, the target load energy storage capacitor in each load energy storage capacitor is controlled to supply power to the sensor on the power transmission line. According to the method, the power taking device takes power for the power transmission line to obtain charging voltage, the charging voltage is compared with a preset voltage range, if the charging voltage is in the preset voltage range, the micro control unit charges each energy storage capacitor in the energy storage capacitor group with the charging voltage, the energy storage capacitors can be charged for each load because the energy storage capacitor group at least comprises two load energy storage capacitors, when the energy storage capacitor group is used for supplying power for a sensor, the micro control unit controls the load energy storage capacitors in a non-charging state and a full-power state to supply power for the sensor, so that at least one energy storage capacitor can be ensured to be in the full-power state by installing the at least two load energy storage capacitors, the load energy storage capacitor in the full-power state is used as a target load energy storage capacitor to supply power for the sensor of the power transmission line, and the stability of power supply of the sensor is ensured; moreover, the load energy storage capacitors cannot be charged and powered at the same time, so that at least two load energy storage capacitors are arranged, at least one load energy storage capacitor can be ensured to be in a full-charge state, when the sensor needs to be powered, the load energy storage capacitor in the full-charge state is only required to be determined as a target energy storage capacitor to power the sensor, and the power supply efficiency of the load energy storage capacitors is improved; in addition, the two load energy storage capacitors can be alternately in a charging and discharging state, the load energy storage capacitors are prevented from being overheated under the condition of charging and discharging at the same time, and the service life of the load energy storage capacitors is prolonged.
The above embodiment describes a case where the target load energy storage capacitors in the load energy storage capacitors are controlled to supply power to the sensor on the power transmission line if the charging voltage is not within the voltage range, and the following describes in detail the control of the target load energy storage capacitors in the load energy storage capacitors to supply power to the sensor on the power transmission line by using an embodiment.
In one embodiment, as shown in fig. 3, the at least two load energy storage capacitors may be two capacitors, a primary load energy storage capacitor and a backup load energy storage capacitor; the process of controlling the target load energy storage capacitor in each load energy storage capacitor to supply power to the sensor on the power transmission line includes the following steps:
and S301, if the main load energy storage capacitor is in a non-charging and full-power state, determining that the main load energy storage capacitor is the target load energy storage capacitor, and controlling the main load energy storage capacitor to supply power to the sensor.
Taking the energy storage capacitor group comprising two load energy storage capacitors as an example, the two load energy storage capacitors comprise a main load energy storage capacitor and a standby load energy storage capacitor; in order to better realize the stability of power supply to the sensor, the capacities of the main load energy storage capacitor and the standby load energy storage capacitor are extra-large capacities, the capacity of the main load energy storage capacitor can be 1500F, and the capacity of the standby load energy storage capacitor can be 1500F; it should be noted that, in practical applications, the capacity of the load energy storage capacitor is not limited in the embodiments of the present application.
And if the charging voltage is not in the preset voltage range, controlling the target load energy storage capacitor in each load energy storage capacitor to supply power to the sensor on the power transmission line.
When the micro control unit controls the load energy storage capacitor to supply power to the sensor on the power transmission line, firstly, whether the main load energy storage capacitor is in a charging state is judged, if the main load energy storage capacitor is in a non-charging state, whether the main load energy storage capacitor is in a full-power state is judged, and if the main load energy storage capacitor is determined to be in the non-charging state and the full-power state, the main load energy storage capacitor is determined to be a target load energy storage capacitor.
When the main load energy storage capacitor is the target load energy storage capacitor, the micro control unit controls the main load energy storage capacitor to supply power to the sensor.
And S302, if the main load energy storage capacitor is in a charging state and/or a non-full-power state and the standby load energy storage capacitor is in a non-charging and full-power state, determining that the standby load energy storage capacitor is the target load energy storage capacitor and controlling the standby load energy storage capacitor to supply power to the sensor.
If the main load energy storage capacitor is in a charging state and/or a non-full-power state, the method comprises the following steps: the main load energy storage capacitor is in a charging state, the main load energy storage capacitor is in a non-full-charge state, and the main load energy storage capacitor is in the charging state and in the non-full-charge state.
And if the main load energy storage capacitor is in a charging state and/or a non-full-power state, continuously judging whether the standby energy storage capacitor is in a non-charging and full-power state, and if the standby energy storage capacitor is in a non-charging and full-power state, determining that the standby load energy storage capacitor is the target load energy storage capacitor.
And when the standby load energy storage capacitor is the target load energy storage capacitor, the micro control unit controls the standby load energy storage capacitor to supply power to the sensor.
According to the power supply method for the sensor, if the main load energy storage capacitor is in a non-charging and full-power state, the main load energy storage capacitor is determined to be the target load energy storage capacitor, the main load energy storage capacitor is controlled to supply power to the sensor, and if the main load energy storage capacitor is in a charging state and/or a non-full-power state and the standby load energy storage capacitor is in a non-charging and full-power state, the standby load energy storage capacitor is determined to be the target load energy storage capacitor, and the standby load energy storage capacitor is controlled to supply power to the sensor. In the method, if the charging voltage is not in a voltage range, the micro control unit controls the energy storage capacitor group to supply power to the sensor, if the main load energy storage capacitor is in a charging state and/or a non-full state, the main load energy storage capacitor is controlled to supply power to the sensor, if the main load energy storage capacitor is in a charging state and/or a non-full state, and the standby load energy storage capacitor is in a non-charging and full state, the standby load energy storage capacitor is controlled to supply power to the sensor, so that the main load energy storage capacitor is discharged first, the standby energy storage capacitor is not discharged, and when the electric quantity of the main load energy storage capacitor is insufficient, the standby load energy storage capacitor starts to discharge, so that at least one load energy storage capacitor is in a full state, and the power supply stability of the sensor is improved.
Based on the above embodiments, the following description is continued by an embodiment to charge each energy storage capacitor in the energy storage capacitor bank with the charging voltage. In one embodiment, as shown in fig. 4, the charging and discharging priority of the main load energy storage capacitor is greater than that of the backup load energy storage capacitor; the method for charging the energy storage capacitors in the energy storage capacitor bank by using the charging voltage comprises the following steps:
s401, if the main load energy storage capacitor is in a non-full state, the main load energy storage capacitor is charged by the charging voltage.
If the charging voltage is in the preset voltage range, the charging voltage is used for charging each energy storage capacitor in the energy storage capacitor bank, and the main load energy storage capacitor is charged firstly when each load energy storage capacitor in the energy storage capacitor bank is charged because the charging and discharging priority of the main load energy storage capacitor is greater than that of the standby load energy storage capacitor.
Before charging the main load energy storage capacitor, whether the main load energy storage capacitor is in a full power state needs to be judged, and if the main load energy storage capacitor is in a non-full power state, the main load energy storage capacitor is charged by the charging voltage.
S402, if the main load energy storage capacitor is in a full state and the standby load energy storage capacitor is not in a full state, charging the standby load energy storage capacitor with a charging voltage.
And if the main load energy storage capacitor is in a full power state, judging whether the standby load energy storage capacitor is in the full power state, and if the standby load energy storage capacitor is not in the full power state, charging the standby load energy storage capacitor by using the charging voltage.
According to the sensor power supply method, if the main load energy storage capacitor is in a non-full-charge state, the main load energy storage capacitor is charged by the charging voltage, and if the main load energy storage capacitor is in a full-charge state and the standby load energy storage capacitor is in a non-full-charge state, the standby load energy storage capacitor is charged by the charging voltage. In the method, because the charging and discharging priority of the main load energy storage capacitor is greater than that of the standby load energy storage capacitor, when each load energy storage capacitor is charged, the main load energy storage capacitor is charged firstly, and if the main load energy storage capacitor is in a full-charge state and the standby load energy storage capacitor is in a non-full-charge state, the standby load energy storage capacitor is charged again.
In some scenarios, the energy storage capacitor bank further includes a power supply energy storage capacitor, and the charging priority of the power supply energy storage capacitor is greater than the charging priority of each load energy storage capacitor. Based on this, the case of charging each energy storage capacitor in the energy storage capacitor group with the charging voltage will be described with reference to the power supply energy storage capacitor.
In an embodiment, as shown in fig. 5, the charging the energy storage capacitors in the energy storage capacitor bank with the charging voltage includes the following steps:
s501, if the power supply energy storage capacitor is in a non-full state, the power supply energy storage capacitor is charged by charging voltage.
If the charging voltage is in the preset voltage range, the charging voltage is used for charging each energy storage capacitor in the energy storage capacitor group, and the charging priority of the energy storage capacitor of the power supply is greater than the charging priority of each load energy storage capacitor, so that the energy storage capacitors of the energy storage capacitor group are charged firstly.
Before charging the power supply energy storage capacitor, judging whether the power supply energy storage capacitor is in a full-power state, and if the power supply load energy storage capacitor is in a non-full-power state, charging the power supply energy storage capacitor by using charging voltage; the power supply energy storage capacitor is an energy storage capacitor capable of supplying power to the micro control unit, and the capacity of the power supply energy storage capacitor can be 10F.
And S502, after the power supply energy storage capacitor is fully charged, sequentially charging the load energy storage capacitors according to the charging priority of the load energy storage capacitors.
And after the power supply energy storage capacitor is fully charged, sequentially charging the load energy storage capacitors according to the charging priority of the load energy storage capacitors.
The charging priority of each load energy storage capacitor is that the charging priority of the main load energy storage capacitor is greater than that of the standby load energy storage capacitor.
After the power supply energy storage capacitor is fully charged, the micro control unit firstly judges whether the main load energy storage capacitor is in a full-charge state, and if the main load energy storage capacitor is in a non-full-charge state, the main load energy storage capacitor is charged by a charging voltage; and if the main load energy storage capacitor is in a full-charge state and the standby energy storage capacitor is in a non-full-charge state, charging the standby load energy storage capacitor by using the charging voltage.
According to the sensor power supply method, if the power supply energy storage capacitor is in a non-full-charge state, the power supply energy storage capacitor is charged by the charging voltage, and after the power supply energy storage capacitor is fully charged, the load energy storage capacitors are sequentially charged according to the charging priorities of the load energy storage capacitors. According to the method, the energy storage capacitors are charged according to the charging priorities of the energy storage capacitors, so that when the energy storage capacitors supply power to the integrated sensor, the power supply efficiency and the power supply stability of the energy storage capacitors are improved, and the normal operation of the sensor is ensured.
In an embodiment, as shown in fig. 6, the process of obtaining the charging voltage obtained by the power taking device from the power transmission line includes the following steps:
s601, acquiring energy-acquiring voltage from the power transmission line through an electricity-acquiring device arranged on the power transmission line.
The power taking device is arranged on the power transmission line in a mode that the power taking device is directly installed on the surface of the power transmission line and converts an alternating magnetic field around a wire of the power transmission line into electric energy based on an electromagnetic induction phenomenon to obtain power taking voltage.
Alternatively, the power taking device may be a power taking gripper device, as shown in fig. 7, the power taking gripper comprising an induction coil and a magnetic core and a triac; the magnetic core is wound on a wire of the power transmission line, the induction coil is wound on the magnetic core, and the bidirectional thyristor is mounted on the induction coil. The induction coil and the magnetic core convert a magnetic field formed by alternating current of a wire of the power transmission line into induction voltage through an electromagnetic induction principle, and it can be understood that the larger the alternating current of the wire is, namely the larger the current of the wire is, the larger the energy taking capacity of the power taking gripper device is, namely the larger the induction voltage is; and the bidirectional thyristor can control the conduction time of the power taking gripper device.
The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials; ferrite cores are used in coils and transformers for various electronic devices.
The inductance coil is a device working by utilizing the principle of electromagnetic induction, and is formed by winding wires on an insulating tube in a circle by circle, wherein the wires are mutually insulated, and the insulating tube can be hollow and can also comprise an iron core or a magnetic powder core. When current flows through a wire, a certain electromagnetic field is generated around the wire, and the wire of the electromagnetic field induces the wire in the range of the electromagnetic field.
The bidirectional thyristor is a silicon controllable rectifier device, also called as a bidirectional thyristor, which can realize the contactless control of alternating current in a circuit and control large current with small current.
And S602, rectifying the energy-taking voltage to obtain a rectified voltage.
The energy taking voltage obtained by the power taking device from the power transmission line is alternating current and needs to be converted into direct current to be provided for a later-stage circuit, so that the energy taking voltage needs to be rectified to obtain rectified voltage.
The energy-taking voltage is rectified by a rectifying circuit, and the alternating current with the direction changed is rectified into the direct current by utilizing the single-phase conductive characteristic of the diode.
Optionally, the rectifier circuit includes a half-wave rectifier circuit, a full-wave rectifier circuit, a bridge rectifier circuit, a voltage-doubler rectifier circuit, and the like, and in this embodiment, the type of the rectifier circuit is not limited.
And S603, filtering the rectified voltage to obtain a charging voltage.
Since a rectifier circuit converts ac power into unidirectional pulsating dc power only, and such a dc power supply contains a large ac component and cannot be used as a power supply of the circuit directly, it is necessary to filter a rectified voltage in the rectifier circuit to remove an ac component and obtain a smooth dc voltage.
The rectified voltage is filtered by a filter circuit to obtain a charging voltage; the filter circuit includes a capacitor filter circuit, an inductor filter circuit, and the like, optionally, the capacitor filter circuit achieves the filtering function by using the charge-discharge principle of a capacitor, and the inductor filter circuit achieves the filtering function by using the back electromotive force of an inductor to the rectified voltage.
According to the sensor power supply method, the energy taking voltage is obtained from the power transmission line through the power taking device arranged on the transmission wire, the energy taking voltage is rectified to obtain the rectified voltage, and the rectified voltage is filtered to obtain the charging voltage. According to the method, the energy taking voltage is obtained from the power transmission line through the power taking device arranged on the transmission wire, and the obtained energy taking voltage is alternating current and is direct current needed when a power supply is provided for a subsequent circuit, so that the energy taking voltage needs to be subjected to rectification filtering processing to obtain direct current capable of being provided for the subsequent circuit, and a foundation is provided for power supply of a sensor.
In one embodiment, the power taking device comprises a bidirectional thyristor, and the embodiment comprises: the conduction time of the bidirectional controllable silicon is controlled by adjusting the duty ratio of the output pulse width modulation of the power taking device.
The conduction time of the bidirectional controllable silicon is used for balancing supply and demand among the voltage required by the sensor, the energy obtaining voltage and the voltage required by the energy storage capacitor bank.
Pulse Width Modulation (PWM), also called Pulse width modulation, is an analog control method, and modulates the bias of the transistor base or the MOS transistor gate according to the change of the corresponding load to change the conduction time of the transistor or the MOS transistor, thereby changing the output of the switching regulator.
Duty cycle refers to the proportion of the time that power is applied to the total time in a pulse cycle. For example, the pulse width is 1 μ s, and the duty cycle of the pulse train is 0.25 for a signal period of 4 μ s. The duty cycle is controlled by the ratio of the time over which current flows and the time over which current does not flow.
The micro control unit adjusts the duty ratio of output pulse width modulation of the power taking device according to the supply-demand relation among the voltage required by the sensor, the energy taking voltage and the voltage required by the energy storage capacitor group so as to dynamically control the conduction time of the bidirectional controllable silicon; when the bidirectional controllable silicon is in a conducting state, the power taking device is in a short circuit state, and at the moment, the load energy storage capacitor in the energy storage capacitor group supplies power to the sensor so as to take energy and discharge; when the bidirectional thyristor is in an off state, the power taking device works, generates power taking voltage and then outputs the power taking voltage to the micro control unit, so that power is supplied to the sensor and the energy storage capacitor bank.
When the on-off of the bidirectional controllable silicon is controlled, a trigger circuit on the bidirectional controllable silicon receives a Pulse Width Modulation (PWM) signal to control the on-off of the bidirectional controllable silicon.
Because the transmission line can adjust the electric energy transmission capacity according to the electric load on the power utilization side, the wire current of the transmission line is a dynamic value, the energy taking voltage obtained by the power taking device from the transmission line also dynamically changes, and the duty ratio of the output pulse width modulation of the power taking device also is a dynamically changing value. More specifically, if the conductor current of the power transmission line is increased, the energy-taking voltage is also increased, and if the duty ratio of the pulse width modulation is not adjusted, the power supply voltage finally provided to the sensor is too large, and the sensor is heated and even damaged due to long-time operation; when the current of a conducting wire of the power transmission line is reduced, the energy taking voltage is also reduced, and if the duty ratio of pulse width modulation is not adjusted, the power supply voltage finally provided for the sensor is too low, so that the sensor is failed to start or is forced to sleep. Therefore, the conduction time of the bidirectional controllable silicon is controlled by adjusting the duty ratio of the output pulse width modulation of the power taking device, and the sensor damage, the starting failure or the forced dormancy caused by the sudden change of the wire current can be avoided.
Adjusting the duty ratio of pulse width modulation according to the supply-demand relation among the voltage required by the sensor, the energy obtaining voltage and the voltage required by the energy storage capacitor bank; for example, if the energy-taking voltage is greater than the voltage required by the sensor and the voltage required by the energy storage capacitor bank, the duty ratio of the pulse width modulation can be set to 100%, and at this time, the bidirectional triode thyristor is in a conducting state; if the energy-taking voltage is less than the voltage required by the sensor, the duty ratio of the pulse width modulation can be set to 0%, and the bidirectional controllable silicon is completely disconnected at the moment.
Based on the fact that the charging voltage is in different voltage ranges, the state that the power taking device takes energy from the electric line is reflected, and therefore, the process of how to charge each energy storage capacitor in the energy storage capacitor bank and how to supply power to the sensor can be explained when the power taking device takes energy from different energy taking states.
The process of how the sensor is powered will be explained first. In one embodiment, if the charging voltage is in a preset voltage range, determining that the state of the power taking device for taking energy from the power transmission line is a sufficient energy taking state, and supplying power to the sensor by using the charging voltage; if the charging voltage is not in the voltage range, determining that the state of the power taking device for taking energy from the power transmission line is an energy taking insufficient state or an energy taking overlarge state; under the state of insufficient energy taking, the charging voltage and the target load energy storage capacitor are used for supplying power to the sensor together; and controlling the target load energy storage capacitor to supply power to the sensor in the state of excessive energy taking.
By setting a first voltage threshold and a second voltage threshold, if the charging voltage is greater than the first voltage threshold and less than the second voltage threshold, it may be determined that the charging voltage is within a preset voltage range; when the charging voltage is within the preset voltage range, the state that the power taking device takes energy from the power transmission line can be determined to be a sufficient energy taking state, when the charging voltage is in the sufficient energy taking state, the micro control unit supplies power to the sensor through the charging voltage, and meanwhile, the micro control unit can store redundant electric energy into the energy storage capacitor bank to charge each energy storage capacitor in the energy storage capacitor bank. It is understood that the second voltage threshold is greater than the first voltage threshold.
If the charging voltage is less than or equal to the first voltage threshold or the charging voltage is greater than or equal to the second voltage threshold, the charging voltage is determined not to be in the voltage range, and when the charging voltage is not in the voltage range, the state that the power taking device takes energy from the power transmission line is determined to be the state that the energy taking is insufficient or the state that the energy taking is overlarge. Specifically, if the charging voltage is less than or equal to a first voltage threshold, determining that the state of the power taking device for taking energy from the power transmission line is an energy taking insufficient state; and if the charging voltage is greater than or equal to the second voltage threshold, determining that the state of the power taking device for taking energy from the power transmission line is an energy taking overlarge state.
When the state that the power taking device takes energy from the power transmission line is the state that the energy taking is insufficient, the duty ratio of the pulse width modulation is 0%, the bidirectional thyristor is in a disconnected state, and at the moment, the charging voltage and the target load energy storage capacitor are used for supplying power to the sensor together.
When the state that the power taking device takes energy from the power transmission line is the state that the energy is taken too large, the duty ratio of the pulse width modulation is 100%, the bidirectional controllable silicon is in a conducting state, and the micro control unit controls the target load energy storage capacitor to supply power to the sensor.
The first voltage threshold may be a voltage required by the sensor, and the second voltage threshold may be a sum of the voltage required by the sensor and a voltage required by the energy storage capacitor bank. It should be noted that, in practical applications, the first voltage threshold and the second voltage threshold are determined according to specific practical situations without any limitation in the embodiments of the present application.
The process of how to charge each energy storage capacitor in the energy storage capacitor group is carried out aiming at the process that the electricity taking device takes energy under different energy taking states. In an embodiment, as shown in fig. 8, the energy storage capacitor bank includes, for example, a power supply control energy storage capacitor, a load circuit backup energy storage capacitor, and the like, and thus, how to describe each energy storage capacitor in the energy storage capacitor bank in detail when the power taking device is in different energy taking states.
When the energy taking capability of the electricity taking device is sufficient, the process of charging the energy storage capacitor bank is as shown in fig. 9, if the charging voltage is within the first voltage threshold and the second voltage threshold, the power supply in the energy storage capacitor bank is firstly controlled to charge the energy storage capacitor, when the power supply controls the energy storage capacitor to be full, the energy storage capacitor of the load circuit is charged, and if the energy storage capacitor of the load circuit is full, the standby energy storage capacitor of the load circuit is charged until the standby energy storage capacitor of the load circuit is full.
When the energy taking capability of the electricity taking device is insufficient or too large, the energy storage capacitor bank can supply power to the sensor, as shown in fig. 10, firstly, if the energy storage capacitor of the load circuit is full, the energy storage capacitor of the load circuit in the energy storage capacitor bank discharges, namely, the sensor is supplied with power; and when the electric quantity of the load circuit energy storage capacitor is insufficient, judging whether the load circuit standby energy storage capacitor is full, and if the load circuit standby energy storage capacitor is full, discharging the load circuit standby energy storage capacitor to supply power to the sensor.
It can be understood that the rectified and filtered charging voltage is unstable, and when the grid voltage or the load changes, the voltage changes, so that after the rectification and filtering, the charging voltage needs to be subjected to voltage stabilization processing to enable the output voltage to be stable and constant within a certain range.
In one embodiment, with continued reference to FIG. 7 above, the voltage needs to be passed through a voltage regulation circuit before the sensor is powered, thus ensuring stability of the voltage supplied to the sensor.
In fig. 7, the power taking device includes an induction coil, a magnetic core, and a triac, and is directly installed on the surface of the power transmission line, and the power taking device can convert an alternating magnetic field around a wire of the power transmission line into sensor electric energy based on an electromagnetic induction phenomenon, and the electric energy of the power taking device is output to the power control module after passing through the rectifying and filtering circuit, and the power control module includes an MCU; a trigger circuit is arranged on the bidirectional controllable silicon, and an MCU on the power supply control module can regulate and output the duty ratio of pulse width modulation according to the relation between the electric energy required by the load loop of the sensor, the energy taking of the electricity taking device and the energy storage of the multi-stage energy storage capacitor group.
When the energy taking capability of the electricity taking device is insufficient, the power supply control module directly supplies output electric energy to a sensor load loop through a voltage stabilizing circuit, wherein the sensor load loop comprises a sensing module for air pressure, temperature, humidity, acceleration and the like, a communication module, a master control MCU, an image NPU and the like; when the energy taking capability of the electricity taking device is sufficient, the power supply control module supplies power to the sensor load loop and also charges the multi-stage energy storage capacitor bank; when the energy taking capacity of the power taking device is overlarge, the power supply control module can control the bidirectional controllable silicon to be in a conducting state, the power taking device is in a short circuit, and at the moment, the multi-stage energy storage capacitor set supplies power to the sensor load loop through the voltage stabilizing circuit.
In order to ensure stable power output and simple system design, a constant power charging method is adopted. Judging by a hardware circuit of the voltage comparator, and when the charging voltage output by the rectifying and filtering circuit is greater than a first voltage threshold and smaller than a second voltage threshold, indicating that the energy-taking capability of the electricity-taking device is sufficient at the moment; when the charging voltage output by the rectifying and filtering circuit is less than or equal to a first voltage threshold, the energy taking capability of the electricity taking device is insufficient at the moment; when the charging voltage output by the rectifying and filtering circuit is greater than or equal to the second voltage threshold, the energy taking capability of the electricity taking device is over large. Optionally, the second voltage threshold is greater than the first voltage threshold, which may be 12.5V.
The embodiment ensures that at least one energy storage capacitor is in a full-power state, and the power supply voltage of the load loop of the sensor is kept stable; the two groups of energy storage capacitors can be in a charging and discharging state alternately, so that the energy storage capacitors are prevented from being overheated under the charging and discharging state at the same time, and the service life of the energy storage capacitors is prolonged; the double-redundancy reliability design is adopted, and the mean fault interval time of the energy storage capacitor exceeds 5 years.
In an embodiment, as shown in fig. 11, taking the energy storage capacitor bank as a multi-stage energy storage capacitor bank, the main load energy storage capacitor as a load circuit energy storage capacitor, and the backup load energy storage capacitor as a load circuit backup energy storage capacitor as an example, the embodiment includes the following steps:
s1101, installing a power taking device on the power transmission line, wherein the power taking device converts an alternating magnetic field around the power transmission line into electric energy based on an electromagnetic induction principle to obtain alternating current voltage.
And S1102, passing the obtained alternating-current voltage through a rectification filter circuit to obtain direct-current voltage.
S1103, performing threshold judgment on the direct current voltage to obtain an energy taking state of the electricity taking device: the energy taking capacity is insufficient, sufficient and overlarge;
wherein, the threshold value judging process is as follows: if the direct-current voltage is smaller than the first threshold value, determining that the energy taking capability of the electricity taking device is insufficient; if the direct current voltage is larger than the second threshold value, determining that the energy obtaining capacity of the electricity obtaining device is overlarge; otherwise, determining that the energy obtaining capacity of the electricity obtaining device is sufficient; the second threshold is greater than the first threshold;
and determining the duty ratio of pulse width modulation according to the relation among the direct-current voltage, the electric energy required by the sensor and the electric energy required by the energy storage of the multi-stage energy storage capacitor group, and controlling the on-off of the bidirectional thyristor in the power taking device by the duty ratio so as to supply power to the sensor by the load energy storage capacitor under the condition that the bidirectional thyristor is switched on and supply power to the sensor by the direct-current voltage in the power transmission line under the condition that the bidirectional thyristor is switched off.
And S1104, if the power-taking capability of the power-taking device is insufficient or too large, the load circuit energy storage capacitor supplies power to the sensor if the load circuit energy storage capacitor is fully charged, and when the load circuit energy storage capacitor is insufficient and the load circuit backup energy storage capacitor is fully charged, the load circuit backup energy storage capacitor supplies power to the sensor.
And S1105, if the energy-taking capability of the electricity-taking device is sufficient, the direct-current voltage is used for supplying power to the sensor, and meanwhile, redundant electric quantity is stored in the multi-stage energy storage capacitor bank.
And S1106, when the multi-stage energy storage capacitor is charged, firstly charging the power supply control energy storage capacitor, when the power supply control energy storage capacitor is fully charged, charging the load circuit energy storage capacitor, and when the load circuit energy storage capacitor is fully charged, charging the load circuit standby energy storage capacitor.
For specific limitations of the sensor power supply method provided in this embodiment, reference may be made to the above step limitations of each embodiment in the sensor power supply method, and details are not described herein again.
It should be understood that, although the respective steps in the flowcharts attached in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the figures attached to the above-mentioned embodiments may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
In one embodiment, as shown in fig. 12, the present application further provides a sensor power supply apparatus 1200, where the apparatus 1200 includes: an obtaining module 1201, a charging module 1202, and a power supply module 1203, wherein:
the obtaining module 1201 is configured to obtain a charging voltage obtained by the power obtaining device from the power transmission line;
the charging module 1202 is configured to charge each energy storage capacitor in the energy storage capacitor bank with the charging voltage if the charging voltage is within a preset voltage range; the energy storage capacitor group comprises at least two load energy storage capacitors;
and the power supply module 1203 is configured to control a target load energy storage capacitor in the load energy storage capacitors to supply power to the sensor on the power transmission line if the charging voltage is not within the voltage range, where the target load energy storage capacitor is a load energy storage capacitor in a non-charging state and in a full-charging state.
In one embodiment, the power module 1203 includes:
the first judgment unit is used for determining that the main load energy storage capacitor is the target load energy storage capacitor and controlling the main load energy storage capacitor to supply power to the sensor if the main load energy storage capacitor is in a non-charging and full-power state;
and the second judgment unit is used for determining that the standby load energy storage capacitor is the target load energy storage capacitor and controlling the standby load energy storage capacitor to supply power to the sensor if the main load energy storage capacitor is in a charging state and/or a non-full-power state and the standby load energy storage capacitor is in a non-charging and full-power state.
In one embodiment, the charging module 1202 includes:
the third judging unit is used for charging the main load energy storage capacitor by using the charging voltage if the main load energy storage capacitor is in a non-full-power state;
and the fourth judging unit is used for charging the standby load energy storage capacitor by the charging voltage if the main load energy storage capacitor is in a full power state and the standby load energy storage capacitor is in a non-full power state.
In one embodiment, the charging module 1202 includes:
the fifth judging unit is used for charging the power supply energy storage capacitor with charging voltage if the power supply energy storage capacitor is in a non-full state;
and the charging unit is used for sequentially charging the load energy storage capacitors according to the charging priority of the load energy storage capacitors after the power supply energy storage capacitors are fully charged.
In one embodiment, the obtaining module 1201 includes:
the acquisition unit is used for acquiring energy acquisition voltage from the power transmission line through an energy acquisition device arranged on the transmission wire;
the rectifying unit is used for rectifying the energy taking voltage to obtain a rectified voltage;
and the filtering unit is used for filtering the rectified voltage to obtain the charging voltage.
In one embodiment, the apparatus 1200 further comprises:
the control module is used for controlling the conduction time of the bidirectional controllable silicon by adjusting the duty ratio of the output pulse width modulation of the power taking device;
the conduction time of the bidirectional controllable silicon is used for balancing supply and demand among the voltage required by the sensor, the energy obtaining voltage and the voltage required by the energy storage capacitor bank.
In one embodiment, if the charging voltage is in a preset voltage range, determining that the state of the power taking device for taking energy from the power transmission line is a sufficient energy taking state, and supplying power to the sensor by using the charging voltage;
if the charging voltage is not in the voltage range, determining that the state of the power taking device for taking energy from the power transmission line is an energy taking insufficient state or an energy taking overlarge state; under the state of insufficient energy taking, the charging voltage and the target load energy storage capacitor are used for supplying power to the sensor together; and controlling the target load energy storage capacitor to supply power to the sensor under the condition of excessive energy taking.
For specific limitations of the sensor power supply device, reference may be made to the above limitations of each step in the sensor power supply method, and details are not repeated here. The modules in the sensor power supply device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a target device, and can also be stored in a memory of the target device in a software form, so that the target device can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, as shown in fig. 13, comprising a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a sensor power supply method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structural description of the computer apparatus described above is only a partial structure relevant to the present application, and does not constitute a limitation on the computer apparatus to which the present application is applied, and a particular computer apparatus may include more or less components than those shown in the drawings, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
The implementation principle and technical effect of each step implemented by the processor in this embodiment are similar to the principle of the sensor power supply method described above, and are not described herein again.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In the present embodiment, the implementation principle and the technical effect of each step implemented when the computer program is executed by the processor are similar to the principle of the above-mentioned sensor power supply method, and are not described herein again.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, carries out the steps in the method embodiments described above.
In the embodiment, the implementation principle and the technical effect of each step implemented when the computer program is executed by the processor are similar to the principle of the above-mentioned sensor power supply method, and are not described herein again.
It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases involved in the embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A method of powering a sensor, the method comprising:
acquiring charging voltage acquired by an electricity acquiring device from a power transmission line;
if the charging voltage is in a preset voltage range, supplying power to a sensor on the power transmission line by using the charging voltage, and charging each energy storage capacitor in an energy storage capacitor bank by using the charging voltage; the energy storage capacitor bank comprises at least two load energy storage capacitors;
if the charging voltage is not in the voltage range, determining that the energy taking state of the power taking device from the power transmission line is an energy taking insufficient state or an energy taking overlarge state, if the energy taking state is the energy taking insufficient state, supplying power to a sensor on the power transmission line by using the charging voltage and a target load energy storage capacitor in each load energy storage capacitor, and if the energy taking state is the energy taking overlarge state, controlling the target load energy storage capacitor in each load energy storage capacitor to supply power to the sensor on the power transmission line, wherein the target load energy storage capacitor is a load energy storage capacitor in a non-charging and full-charging state; the voltage range is preset, which indicates that the charging voltage is greater than a first voltage threshold and less than a second voltage threshold; the first voltage threshold is the voltage required by the sensor; the second voltage threshold is the sum of the voltages required by the sensor and the energy storage capacitor bank.
2. The method of claim 1, wherein the at least two load energy storage capacitors comprise a primary load energy storage capacitor and a backup load energy storage capacitor; the controlling of the target load energy storage capacitor in each load energy storage capacitor to supply power to the sensor on the power transmission line comprises:
if the main load energy storage capacitor is in a non-charging and full-charging state, determining that the main load energy storage capacitor is the target load energy storage capacitor, and controlling the main load energy storage capacitor to supply power to the sensor;
and if the main load energy storage capacitor is in a charging state and/or a non-full-power state and the standby load energy storage capacitor is in a non-charging and full-power state, determining that the standby load energy storage capacitor is the target load energy storage capacitor and controlling the standby load energy storage capacitor to supply power to the sensor.
3. The method of claim 2, wherein the charging and discharging priority of the primary load energy storage capacitor is greater than the charging and discharging priority of the backup load energy storage capacitor; the charging of each energy storage capacitor in the energy storage capacitor bank with the charging voltage includes:
if the main load energy storage capacitor is in a non-full state, charging the main load energy storage capacitor by the charging voltage;
and if the main load energy storage capacitor is in a full-power state and the standby load energy storage capacitor is in a non-full-power state, charging the standby load energy storage capacitor by the charging voltage.
4. The method according to any one of claims 1-3, wherein the energy storage capacitor bank further comprises a power supply energy storage capacitor, and the charging priority of the power supply energy storage capacitor is greater than the charging priority of each of the load energy storage capacitors; the charging of each energy storage capacitor in the energy storage capacitor group with the charging voltage includes:
if the power supply energy storage capacitor is in a non-full state, charging the power supply energy storage capacitor by the charging voltage;
and after the power supply energy storage capacitor is fully charged, sequentially charging the load energy storage capacitors according to the charging priority of the load energy storage capacitors.
5. The method according to any one of claims 1 to 3, wherein the obtaining of the charging voltage for the power taking device to take energy from the power transmission line comprises:
acquiring energy-taking voltage from the power transmission line through an energy-taking device arranged on the power transmission line;
rectifying the energy taking voltage to obtain a rectified voltage;
and filtering the rectified voltage to obtain the charging voltage.
6. The method of claim 5, wherein the power take-off device comprises a triac, the method further comprising:
controlling the conduction time of the bidirectional controllable silicon by adjusting the duty ratio of the output pulse width modulation of the power taking device;
and the conduction time of the bidirectional controllable silicon is used for balancing supply and demand among the voltage required by the sensor, the energy obtaining voltage and the voltage required by the energy storage capacitor bank.
7. The method according to any one of claims 1 to 3, wherein if the charging voltage is in a preset voltage range, the state that the power taking device takes energy from the power transmission line is determined to be a sufficient energy taking state, and the charging voltage is used for supplying power to the sensor.
8. A sensor power supply apparatus, the apparatus comprising:
the acquisition module is used for acquiring charging voltage acquired by the power acquisition device from the power transmission line;
the charging module is used for supplying power to the sensor on the power transmission line by the charging voltage and charging each energy storage capacitor in the energy storage capacitor bank by the charging voltage if the charging voltage is in a preset voltage range; the energy storage capacitor bank comprises at least two load energy storage capacitors;
the power supply module is used for determining that the energy taking state of the power taking device from the power transmission line is an energy taking insufficient state or an energy taking overlarge state if the charging voltage is not in the voltage range, supplying power to the sensor on the power transmission line by using the charging voltage and a target load energy storage capacitor in each load energy storage capacitor if the energy taking state is the energy taking insufficient state, and controlling the target load energy storage capacitor in each load energy storage capacitor to supply power to the sensor on the power transmission line if the energy taking state is the energy taking overlarge state, wherein the target load energy storage capacitor is a load energy storage capacitor in a non-charging state and a full-charging state; the voltage range is preset, which indicates that the charging voltage is greater than a first voltage threshold and smaller than a second voltage threshold; the first voltage threshold is the voltage required by the sensor; the second voltage threshold is the sum of the voltages required by the sensor and the energy storage capacitor bank.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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