CN111969664B - Electric energy collection circuit and electric energy collection method of wireless temperature measurement device - Google Patents
Electric energy collection circuit and electric energy collection method of wireless temperature measurement device Download PDFInfo
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- CN111969664B CN111969664B CN202010685520.6A CN202010685520A CN111969664B CN 111969664 B CN111969664 B CN 111969664B CN 202010685520 A CN202010685520 A CN 202010685520A CN 111969664 B CN111969664 B CN 111969664B
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000009466 transformation Effects 0.000 claims abstract description 43
- 230000005611 electricity Effects 0.000 claims abstract description 39
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 75
- 238000001514 detection method Methods 0.000 claims description 23
- 230000006641 stabilisation Effects 0.000 claims description 19
- 238000011105 stabilization Methods 0.000 claims description 19
- 230000002776 aggregation Effects 0.000 claims description 4
- 238000004220 aggregation Methods 0.000 claims description 4
- 238000003306 harvesting Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000009977 dual effect Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910000889 permalloy Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/10—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
- H02M7/103—Containing passive elements (capacitively coupled) which are ordered in cascade on one source
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2215/00—Details concerning sensor power supply
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Abstract
The invention provides an electric energy collection circuit and an electric energy collection method of a wireless temperature measurement device, wherein the electric energy collection circuit comprises an electric energy collection module and an electric energy processing module, the electric energy collection module comprises an electric energy collection ring, the electric energy collection ring is connected with a low-power electric energy collection circuit, the electric energy processing module comprises an energy gathering circuit and a voltage transformation and stabilizing circuit, the energy gathering circuit is connected with the low-power electric energy collection circuit, and the electric energy collection circuit is connected with the wireless temperature measurement circuit of the wireless temperature measurement device through the voltage transformation and stabilizing circuit so as to supply power for the wireless temperature measurement circuit. The invention simultaneously carries out rectification and voltage doubling through the rectification voltage doubling circuit, and the rectification voltage doubling circuit directly outputs the rectification voltage doubling circuit to the energy gathering circuit, and has the advantages of simple circuit structure, low electric quantity electricity taking and the like.
Description
Technical Field
The invention belongs to the technical field of wireless temperature measurement, and particularly relates to an electric energy collection circuit and an electric energy collection method of a wireless temperature measurement device.
Background
In recent years, with the continuous increase of economy, the electric power demand is larger and larger, so that the electric power system is developed towards the directions of large capacity, high voltage and intelligence, and the safe and efficient operation of the electric power system is closely related to the healthy development of social economy and the stability of people's life.
In various electrical equipment, the power cable is easy to generate heat due to aging or overlarge contact resistance, and particularly, the heat generation phenomenon is more obvious at the cable connection position, and the temperature of the heat generation positions is detected and alarmed, so that the occurrence of fire accidents can be avoided, and the social effects of economic loss, large-scale power failure and the like are reduced.
The conventional temperature measuring method of the ring main unit of the current power system depends on manpower and an infrared thermometer to carry out timing inspection, and the method not only consumes a great deal of manpower, but also can not carry out real-time detection on the temperature change of the temperature measuring point. In the prior art, when the temperature test is carried out, a worker is usually aligned to a place, or a temperature sensor is installed at a certain position to measure the temperature of a corresponding position, the labor cost is high, the temperature sensor is inconvenient to install at will, the temperature detected by the temperature sensor installed at will is easily influenced by external or other nearby equipment, and the sensor installed at will causes disordered circuit lines, so that the later maintenance and repair are inconvenient.
In order to solve the above technical problems, long-term exploration is performed, for example, chinese patent discloses a wireless temperature sensor [ application number: CN201811520411.8] comprising a shell and a PCB board installed in the shell, wherein two sides of the shell are provided with a communicating through slot, the PCB board is provided with an energy collecting unit, a rectifying circuit, a voltage stabilizing protection module and a main control IC chip, the main control IC chip contains a micro control unit and an RF radio frequency processing unit, the main control IC chip is electrically connected with a temperature sensing chip, and the RF radio frequency processing unit is connected with a wireless transmitting antenna in a communication way; the energy acquisition unit comprises a coil framework, the coil framework comprises a winding reel, shielding parts are arranged at the two ends of the winding reel, annular grooves are formed in one sides, far away from the winding reel, of the shielding parts, sealing rings are clamped in the grooves, the shielding parts are fixedly arranged on a PCB, a plurality of turns of metal coils are wound on the winding reel, alloy belts penetrate through the through grooves and the hollow inner part of the coil framework, and the two ends of the alloy belts are fixedly connected; one end of the metal coil is electrically connected with the input end of the rectifying circuit, the other end of the metal coil is electrically connected with the negative electrode input end of the voltage stabilizing protection module, and the output end of the rectifying circuit is electrically connected with the positive electrode input end of the voltage stabilizing protection module; the positive pole and the negative pole of the voltage stabilizing protection module are electrically connected with the main control IC chip.
The sensor can realize wireless electricity taking and wireless temperature measurement, but the electricity taking circuit of the sensor has certain defects, and the electricity taking circuit of the sensor has the problems of high electricity taking quantity, small output electric energy and low electricity taking efficiency.
Disclosure of Invention
The invention aims to solve the problems and provide an electric energy collection circuit of a wireless temperature measuring device;
another object of the present invention is to provide a method for collecting electric energy of a wireless temperature measuring device, aiming at the above problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a wireless temperature measuring device's electric energy collection circuit, includes gets electric module and electric energy processing module, the electric module of getting including getting the electric ring, get electric ring connect in low electric quantity get electric circuit, electric energy processing module including connect in low electric quantity get electric circuit's energy gathering circuit and voltage transformation voltage stabilizing circuit, electric energy collection circuit passes through voltage transformation voltage stabilizing circuit connects in wireless temperature measuring device's wireless temperature measuring circuit in order to be for wireless temperature measuring circuit power supply.
In the electric energy collection circuit of the wireless temperature measuring device, the low-power electricity taking circuit comprises a rectifying voltage doubling circuit with input and output connected with the electricity taking ring and the electric energy processing module respectively.
In the electric energy collection circuit of the wireless temperature measurement device, the output end of the rectifying voltage doubling circuit is directly connected with the energy gathering circuit.
In the electric energy collecting circuit of the wireless temperature measuring device, the rectifying voltage doubling circuit comprises a first double diode, a second double diode, a third double diode and a fourth double diode which are respectively connected to two ends of the power taking ring, each double diode comprises a reverse diode and a forward diode, each double diode is connected with a charging capacitor, and two ends of the energy collecting circuit are respectively connected to the forward diode output end of the second double diode and the reverse diode input end of the third double diode.
In the electric energy collecting circuit of the wireless temperature measuring device, the connection end of the reverse diode and the forward diode of each double diode is connected with one end of the electricity taking ring through a charging capacitor;
the reverse diode of the first double diode and the forward diode of the fourth double diode are both connected to the other end of the power taking ring;
the reverse diode of the second double diode and the forward diode of the first double diode are connected to the other end of the power taking ring through a charging capacitor; the reverse diode of the fourth double diode and the forward diode of the third double diode are connected to the other end of the power taking ring through a charging capacitor;
the forward diode of the second double diode is connected with the other end of the power taking ring through a charging capacitor; the reverse diode of the third double diode is connected with the other end of the power taking ring through a charging capacitor;
the forward diode output end of the second double diode and the reverse diode input end of the third double diode are respectively connected to two ends of the energy gathering circuit.
In the electric energy collection circuit of the wireless temperature measurement device, the energy collection circuit comprises an energy collection capacitor and a voltage detection circuit for detecting the voltage of the energy collection capacitor, wherein the energy collection capacitor is connected to the input end of the electric energy processing module, and the output end of the voltage detection circuit is connected to the enabling end of the electric energy processing module.
In the electric energy collecting circuit of the wireless temperature measuring device, the energy collecting circuit comprises a plurality of energy collecting capacitors which are connected in parallel.
In the electric energy collecting circuit of the wireless temperature measuring device, the voltage detecting circuit comprises a voltage detecting chip, the electric energy processing module comprises a voltage transformation and stabilizing chip, the input end of the voltage detecting chip is connected with the energy gathering capacitor, the output end of the voltage detection chip is connected with the enabling end of the voltage transformation and stabilizing chip, and the voltage output end of the voltage transformation and stabilizing chip is connected with the wireless temperature measuring circuit and the enabling end of the voltage transformation and stabilizing chip.
In the electric energy collecting circuit of the wireless temperature measuring device, a first protection diode is connected between the voltage detection electric chip and the voltage transformation and stabilization chip, and a second protection diode is connected between the enabling end of the voltage transformation and stabilization chip and the voltage output end;
a first capacitor and a second capacitor which are mutually connected in parallel are connected between the voltage output end of the voltage transformation and stabilizing chip and the ground end.
A method for collecting electric energy of a wireless temperature measuring device comprises the following steps:
s1, after the cable is electrified, the power taking ring takes power, the rectification voltage doubling circuit performs voltage doubling treatment on the power taking voltage and outputs the power to the energy gathering circuit, and the energy gathering circuit gathers electric energy;
s2, detecting the voltage of the energy aggregation circuit by a voltage detection circuit, and outputting an enabling signal to a voltage transformation and stabilization circuit after the detected voltage reaches a voltage threshold;
s3, the voltage is subjected to voltage transformation and stabilization treatment by the voltage transformation and stabilization circuit, and then 3.3V voltage is continuously output to supply power to the wireless temperature measurement circuit;
s4, the voltage of the energy gathering circuit is gradually reduced due to consumption of electric energy in the working process of the wireless temperature measuring circuit, and after the voltage of the energy gathering circuit is lower than a voltage threshold value, the output voltage of the voltage transformation and stabilizing circuit provides high level for an enabling end of the voltage transformation and stabilizing circuit so as to maintain voltage output.
The invention has the advantages that: the rectification and voltage doubling are carried out simultaneously through the rectification voltage doubling circuit, and the rectification voltage doubling circuit directly outputs the voltage doubling circuit to the energy gathering circuit, so that the energy gathering circuit has the advantages of being simple in circuit structure, capable of achieving low-power electricity taking and the like.
Drawings
FIG. 1 is a block diagram of the circuit configuration of the wireless temperature measuring device of the present invention;
FIG. 2 is a circuit diagram of a power taking module of the power collecting circuit of the wireless temperature measuring device;
FIG. 3 is a schematic diagram showing the current flow during operation of the power module of the present invention;
FIG. 4 is a second schematic diagram of the current flow during operation of the power module of the present invention;
FIG. 5 is a schematic diagram III of the current flow during operation of the power module of the present invention;
FIG. 6 is a schematic diagram showing the current flow during operation of the power module of the present invention;
FIG. 7 is a schematic diagram of the current flow during operation of the power module of the present invention;
FIG. 8 is a circuit diagram of a power processing module of a power harvesting circuit of the wireless temperature measuring device of the present invention.
Reference numerals: an electricity taking ring 1; a low power extraction circuit 2; an energy accumulating circuit 3; a voltage-variable and voltage-stabilizing circuit 4; and a wireless temperature measuring circuit 5.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 and fig. 2, the embodiment discloses an electric energy collection circuit of a wireless temperature measurement device, which comprises an electricity taking module and an electric energy processing module, wherein the electricity taking module comprises an electricity taking ring 1 and an electricity taking ring framework, the electricity taking ring 1 is connected to a J1 position in fig. 2, the electricity taking ring 1 is connected to a low-power electricity taking circuit 2, the electric energy processing module comprises an energy aggregation circuit 3 and a voltage transformation and stabilizing circuit 4 which are connected to the low-power electricity taking circuit 2, and the electric energy collection circuit is connected to a wireless temperature measurement circuit 5 of the wireless temperature measurement device through the voltage transformation and stabilizing circuit 4 so as to supply power for the wireless temperature measurement circuit 5.
Preferably, the power taking ring 1 and the power taking ring skeleton of the present embodiment are both made of permalloy. The electricity taking ring 1 and the electricity taking ring framework are made of permalloy, so that the electricity taking part has better magnetic permeability, the electricity taking efficiency is improved, and support is provided for low-power electricity taking.
The power taking ring 1 and the power taking ring framework which are made of permalloy are adopted, meanwhile, the power taking efficiency can be effectively improved by adopting the mode of the low-power taking circuit 2 and the energy gathering circuit 3, and power taking is realized under the condition of low power.
Specifically, the low-power taking circuit 2 includes a rectifying voltage doubling circuit with input and output connected to the power taking ring 1 and the power processing module respectively. The output end of the rectifying voltage doubling circuit is directly connected with the energy gathering circuit 3, so that the circuit structure is simplified on the basis that low-power electricity taking can be realized, and electricity taking voltage can be rectified and voltage doubling processed.
Specifically, the rectifying voltage doubling circuit includes a first double diode D1, a second double diode D2, a third double diode D3 and a fourth double diode D4 respectively connected to two ends of the power taking ring 1, each double diode includes a reverse diode and a forward diode, each double diode is connected with a charging capacitor, and two ends of the energy gathering circuit 3 are respectively connected to an output end of the forward diode in the second double diode D2 and an input end of the reverse diode in the third double diode D3.
Further, the connection ends of the reverse diode and the forward diode of each double diode are connected to one end of the power taking ring 1 through a charging capacitor C28, C30, C33 and C35;
the reverse diode of the first double diode D1 and the forward diode of the fourth double diode D4 are both connected to the other end of the power taking ring 1;
the reverse diode of the second double diode D2 and the forward diode of the first double diode D1 are connected to the other end of the power taking ring 1 through a charging capacitor C29; the reverse diode of the fourth double diode D4 and the forward diode of the third double diode D3 are connected to the other end of the power taking ring 1 together through a charging capacitor C34;
the forward diode of the second double diode D2 is connected to the other end of the power taking ring 1 through a charging capacitor C31; the reverse diode of the third double diode D3 is connected to the other end of the power taking ring 1 through a charging capacitor C32;
the forward diode output of the second dual diode D2 and the reverse diode input of the third dual diode D3 are connected to two ends of the energy accumulating circuit 3, respectively, namely PZ2 and PZ1 in fig. 2 are connected to PZ2 and PZ1 in fig. 8, respectively.
The dual diodes are preferably schottky barrier (dual) diodes of the type BAT54 SW. The capacitance values of the charging capacitors 28-C35 were 2.2uf, respectively.
The working process of the rectification voltage doubling circuit is as follows:
as shown in fig. 3, when the power taking ring 1 is positive and negative, the current passes through the charging capacitor C35 and the forward diode in the fourth double diode D4 to form a loop to charge the charging capacitor C35, and the voltage is the unit voltage U;
as shown in fig. 4, when the power taking ring 1 is turned up and down, the current charges the charging capacitor C28 through a loop formed by the reverse diode in the first double diode D1 and the charging capacitor C28, the voltage is a single voltage U, and the current forms a loop through the reverse diode in the fourth double diode D4 of the charging capacitor C34 and the charging capacitor C35, the voltage on the charging capacitor C35 is overlapped with the voltage of the power taking ring 1 to charge the charging capacitor C34, and the voltage of the charging capacitor C34 is 2U;
as shown in fig. 5, when the electricity taking ring 1 is positive and negative again, the current charges the charging capacitor C29 through the charging capacitor C28, the forward diode in the first double diode D1 and the charging capacitor C29 to form a loop, the voltage is 2U, the current forms a loop through the charging capacitor C33, the forward diode in the third double diode D3 and the charging capacitor C34, the voltage 2U on the charging capacitor C34 is overlapped with the voltage of the electricity taking ring 1 to charge the charging capacitor C33, and the voltage of the charging capacitor C33 is 3U;
as shown in fig. 6, when the power taking ring 1 is turned down and turned up and down again, the current passes through the charging capacitor C29, the reverse diode in the second double diode D2 and the charging capacitor C30 to form a loop, and charges the charging capacitor C30, with a voltage of 3U; the current forms a loop through a charging capacitor C32, a third double-diode D3 reverse diode and a charging capacitor C33, the voltage 3U on the charging capacitor C33 is overlapped with the voltage of the electricity taking ring 1 to charge the charging capacitor C32, and the voltage of the charging capacitor C32 is 4U;
as shown in fig. 7, when the power taking ring 1 is positive and negative for the third time, the current passes through the charging capacitor C30, the forward diode in the second dual diode D2 and the charging capacitor C31 to form a loop to charge the charging capacitor C31, and the voltage is 4U; therefore, voltages across PZ1 and PZ2 are the charge capacitor C31 and the charge capacitor C32, and the voltage is 8U (eight times voltage) superimposed.
Specifically, as shown in fig. 8, the energy accumulating circuit 3 includes an energy accumulating capacitor connected to an input terminal of the power processing module and a voltage detecting circuit for detecting a voltage of the energy accumulating capacitor, an output terminal of the voltage detecting circuit being connected to an enable terminal of the power processing module. The energy concentrating circuit 3 here comprises three energy concentrating capacitors C36, C37, C38 connected in parallel, the three energy concentrating capacitors each having a capacitance value of 220uF.
Specifically, the voltage detection circuit includes voltage detection chip U2, and the electric energy processing module includes voltage transformation steady voltage chip U5, and voltage detection chip U2's input is connected in energy gathering electric capacity, and the output is connected in voltage transformation steady voltage chip U5's enabling end, and voltage transformation steady voltage chip U5's voltage output is connected in wireless temperature measurement circuit 5 and voltage transformation steady voltage chip U5's enabling end simultaneously.
TPS7A0533 is selected as the model of the voltage-stabilizing chip U5, and S-80844CLNB is selected as the model of the voltage detection chip U2.
Preferably, a first protection diode D6 is connected between the voltage detection chip U2 and the voltage transformation and stabilizing chip U5, and a second protection diode D7 is connected between the enable end EN of the voltage transformation and stabilizing chip U5 and the voltage output end.
The first capacitor C40 and the second capacitor C41 which are mutually connected in parallel are connected between the voltage output end of the voltage transformation and stabilizing chip U5 and the ground end, so that the voltage output by the voltage transformation and stabilizing chip U5 can be more stable.
When the power supply device is put into use, the power supply ring 1 is powered on after the power supply ring is powered on, the rectifying voltage doubling circuit rectifies and doubles the power supply voltage and outputs the rectified voltage to the energy gathering circuit 3 (C36, C37 and C38), the energy gathering circuit 3 gathers electric energy, meanwhile, the voltage detection chip U2 detects the voltage of the energy gathering circuit 3, when the detected voltage reaches a voltage threshold (4.4V in this case), the output end of the voltage detection chip U2 outputs high level to the enabling end of the voltage transformation and stabilization chip U5, and the voltage transformation and stabilization chip U5 carries out voltage transformation and stabilization treatment on the voltage after obtaining high level and outputs 3.3V voltage. When the voltage of 3.3V is output by the voltage-transformation and voltage-stabilizing chip U5, the back-end circuit (wireless temperature-measuring circuit 5) is powered on to start working and consume electric energy, so that when the voltage of the front-end voltage-detection chip U2 is lower than the voltage threshold, the output end of the voltage-detection chip U2 is turned off, at this time, the output supply end of the voltage-transformation and voltage-stabilizing chip U5 is used for supplying high level to the enabling end of the voltage-transformation and voltage-stabilizing chip U5 so as to ensure continuous working, the first protection diode D6 in the circuit is used for preventing the voltage at the second protection diode D7 from affecting the voltage-detection chip U2, and the second protection diode D7 is used for preventing the high level at the output end of the voltage-detection chip U2 from affecting the back-end circuit. Therefore, after the power taking circuit starts to work, the energy gathering circuit 3 collects energy, power supply is started after the voltage reaches the voltage threshold, the enabling end of the voltage transformation and stabilizing chip U5 after the power taking circuit is started is provided with high level by the output end, the problem that a back-end circuit is difficult to start under the condition of low-power taking is avoided, and therefore support is further provided for low-power taking.
In addition, the wireless temperature measuring device generally detects temperature intermittently and transmits temperature data, for example, once every 2 minutes, and in order to reduce power consumption, the wireless temperature measuring device of the embodiment also adopts a mode of detecting temperature intermittently and transmitting temperature intermittently and entering a low power consumption sleep state from time to time. The energy aggregation circuit 3 of the present embodiment can continue to aggregate energy during the period when the wireless temperature measurement device enters the low power consumption sleep state, so that this manner can also further provide support for low power consumption.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as a power taking module, an electric energy processing module, a power taking ring 1, a power taking ring skeleton, a low-power taking circuit 2, an energy gathering circuit 3, a voltage stabilizing circuit 4, a rectifying and voltage-stabilizing circuit, a double diode, a wireless temperature measuring circuit 5 and the like are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (6)
1. The electric energy collection circuit of the wireless temperature measuring device comprises an electricity taking module and an electric energy processing module, and is characterized in that the electricity taking module comprises an electricity taking ring (1), the electricity taking ring (1) is connected with a low-electricity taking circuit (2), the electric energy processing module comprises an energy gathering circuit (3) and a voltage transformation and stabilization circuit (4) which are connected with the low-electricity taking circuit (2), and the electric energy collection circuit is connected with a wireless temperature measuring circuit (5) of the wireless temperature measuring device through the voltage transformation and stabilization circuit (4) so as to supply power for the wireless temperature measuring circuit (5);
the low-power-consumption circuit (2) comprises a rectifying voltage doubling circuit with input and output connected with the power-consumption ring (1) and the electric energy processing module respectively;
the output end of the rectifying voltage doubling circuit is directly connected with the energy gathering circuit (3);
the rectification voltage doubling circuit comprises a first double diode, a second double diode, a third double diode and a fourth double diode which are respectively connected to two ends of the power taking ring (1), each double diode comprises a reverse diode and a forward diode, each double diode is connected with a charging capacitor, and two ends of the energy gathering circuit (3) are respectively connected to the forward diode output end of the second double diode and the reverse diode input end of the third double diode;
the connection ends of the reverse diode and the forward diode of each double diode are connected to one end of the electricity taking ring (1) through a charging capacitor;
the reverse diode of the first double diode and the forward diode of the fourth double diode are both connected to the other end of the power taking ring (1);
the reverse diode of the second double diode and the forward diode of the first double diode are connected to the other end of the power taking ring (1) together through a charging capacitor; the reverse diode of the fourth double diode and the forward diode of the third double diode are connected to the other end of the electricity taking ring (1) together through a charging capacitor;
the forward diode of the second double diode is connected with the other end of the power taking ring (1) through a charging capacitor; the reverse diode of the third double diode is connected with the other end of the electricity taking ring (1) through a charging capacitor;
the forward diode output end of the second double diode and the reverse diode input end of the third double diode are respectively connected with two ends of the energy gathering circuit (3).
2. The electric energy collection circuit of the wireless temperature measurement device according to claim 1, wherein the energy collection circuit (3) comprises an energy collection capacitor and a voltage detection circuit for detecting the voltage of the energy collection capacitor, the energy collection capacitor is connected to the input end of the electric energy processing module, and the output end of the voltage detection circuit is connected to the enabling end of the electric energy processing module.
3. The power harvesting circuit of a wireless temperature measuring device according to claim 2, wherein the power harvesting circuit (3) comprises a plurality of power harvesting capacitors connected in parallel.
4. The electric energy collection circuit of the wireless temperature measurement device according to claim 3, wherein the voltage detection circuit comprises a voltage detection chip, the electric energy processing module comprises a voltage transformation and stabilization chip, an input end of the voltage detection chip is connected with the energy accumulation capacitor, an output end of the voltage transformation and stabilization chip is connected with an enabling end of the voltage transformation and stabilization chip, and a voltage output end of the voltage transformation and stabilization chip is connected with the wireless temperature measurement circuit (5) and an enabling end of the voltage transformation and stabilization chip.
5. The electric energy collection circuit of the wireless temperature measurement device according to claim 4, wherein a first protection diode is connected between the voltage detection electric chip and the voltage transformation and stabilization chip, and a second protection diode is connected between an enabling end of the voltage transformation and stabilization chip and a voltage output end;
a first capacitor and a second capacitor which are mutually connected in parallel are connected between the voltage output end of the voltage transformation and stabilizing chip and the ground end.
6. The electric energy collection method of the wireless temperature measurement device is characterized by comprising the following steps of:
A. the power taking ring (1) is powered on after the cable is electrified, the rectification voltage doubling circuit rectifies and voltage doubles the power taking voltage and outputs the power taking voltage to the energy gathering circuit (3), and the energy gathering circuit (3) gathers the electric energy;
B. the voltage detection circuit detects the voltage of the energy aggregation circuit (3) and outputs an enabling signal to the voltage transformation and stabilizing circuit (4) after the detected voltage reaches a voltage threshold;
C. the voltage transformation and stabilization circuit (4) continuously outputs 3.3V voltage after performing voltage transformation and stabilization treatment on the voltage;
D. the power consumption in the working process of the wireless temperature measuring circuit (5) enables the voltage of the energy gathering circuit (3) to be gradually reduced, and after the voltage of the energy gathering circuit (3) is lower than a voltage threshold value, the output voltage of the voltage-transformation voltage-stabilizing circuit (4) provides a high level for the enabling end of the voltage-transformation voltage-stabilizing circuit (4) so as to keep voltage output;
the rectification voltage doubling circuit comprises a first double diode, a second double diode, a third double diode and a fourth double diode which are respectively connected to two ends of the power taking ring (1), each double diode comprises a reverse diode and a forward diode, each double diode is connected with a charging capacitor, and two ends of the energy gathering circuit (3) are respectively connected to the forward diode output end of the second double diode and the reverse diode input end of the third double diode;
the connection ends of the reverse diode and the forward diode of each double diode are connected to one end of the electricity taking ring (1) through a charging capacitor;
the reverse diode of the first double diode and the forward diode of the fourth double diode are both connected to the other end of the power taking ring (1);
the reverse diode of the second double diode and the forward diode of the first double diode are connected to the other end of the power taking ring (1) together through a charging capacitor; the reverse diode of the fourth double diode and the forward diode of the third double diode are connected to the other end of the electricity taking ring (1) together through a charging capacitor;
the forward diode of the second double diode is connected with the other end of the power taking ring (1) through a charging capacitor; the reverse diode of the third double diode is connected with the other end of the electricity taking ring (1) through a charging capacitor;
the forward diode output end of the second double diode and the reverse diode input end of the third double diode are respectively connected with two ends of the energy gathering circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685520.6A CN111969664B (en) | 2020-07-16 | 2020-07-16 | Electric energy collection circuit and electric energy collection method of wireless temperature measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202815054U (en) * | 2012-10-10 | 2013-03-20 | 天津赛思科技发展有限公司 | Digital electronic type wireless zero-sequence mutual inductor |
| CN205385307U (en) * | 2016-01-26 | 2016-07-13 | 朱思含 | A wireless radio frequency energy charging device for cell -phone |
| CN109813437A (en) * | 2019-01-29 | 2019-05-28 | 武汉科瑞新电气自动化有限公司 | Passive and wireless infrared temperature measurement apparatus |
| JP2019103386A (en) * | 2017-11-29 | 2019-06-24 | Tdk株式会社 | Wireless power reception device, and wireless power transmission system using the same |
| CN209858101U (en) * | 2019-04-15 | 2019-12-27 | 和远智能科技股份有限公司 | Self-powered wireless temperature measurement circuit and sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202815054U (en) * | 2012-10-10 | 2013-03-20 | 天津赛思科技发展有限公司 | Digital electronic type wireless zero-sequence mutual inductor |
| CN205385307U (en) * | 2016-01-26 | 2016-07-13 | 朱思含 | A wireless radio frequency energy charging device for cell -phone |
| JP2019103386A (en) * | 2017-11-29 | 2019-06-24 | Tdk株式会社 | Wireless power reception device, and wireless power transmission system using the same |
| CN109813437A (en) * | 2019-01-29 | 2019-05-28 | 武汉科瑞新电气自动化有限公司 | Passive and wireless infrared temperature measurement apparatus |
| CN209858101U (en) * | 2019-04-15 | 2019-12-27 | 和远智能科技股份有限公司 | Self-powered wireless temperature measurement circuit and sensor |
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