CN111412998A - Wireless temperature measurement active and passive integrated temperature sensor circuit - Google Patents
Wireless temperature measurement active and passive integrated temperature sensor circuit Download PDFInfo
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- CN111412998A CN111412998A CN201911387923.6A CN201911387923A CN111412998A CN 111412998 A CN111412998 A CN 111412998A CN 201911387923 A CN201911387923 A CN 201911387923A CN 111412998 A CN111412998 A CN 111412998A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the relevant field of temperature sensors, and particularly discloses a wireless temperature measurement active and passive integrated temperature sensor circuit which comprises a passive voltage VCC _ P and an active voltage VCC _ BAT, wherein the passive voltage VCC _ P is a power supply voltage obtained by a rectifying circuit, a voltage reduction circuit, a voltage regulation circuit, a voltage stabilization circuit and a filter circuit, and the active voltage VCC _ BAT is a power supply voltage obtained by an active power supply battery BAT1 through a toggle switch J8 and a filter capacitor C13. The invention adopts an active and passive integrated power supply mode, and the passive and active automatic seamless switching is realized by taking the CMOS tube Q3 which plays a switching role as a switching tube and matching the isolation diode D12 and the isolation diode D13 as isolation, so that the active and the passive do not influence each other. In addition, the sensor structure also ensures that the passive power supply is the priority power supply, when the passive power supply is lost, the sensor structure is automatically switched to an active mode, so that the advantages and disadvantages are complemented, the whole electric power temperature measurement system can run more stably, and a more powerful technical guarantee is provided for the normal running of the whole electric power station.
Description
Technical Field
The invention relates to the related field of temperature sensors, in particular to a wireless temperature measurement active and passive integrated temperature sensor circuit.
Background
In view of the high, medium and low voltage power at present, most of sensors in the wireless temperature measuring device adopt two independent power supply modes of active power supply and passive power supply independently. The power supply system comprises an active power supply mode, a passive power supply mode and a power supply mode, wherein the active power supply mode and the passive power supply mode respectively have the following advantages and disadvantages:
1. the active power supply mode is a battery power supply mode, the installation is simple and convenient, and the sensor can work as long as a power switch of the sensor is turned on. However, the active power supply has a high requirement on the battery, a high-quality and high-temperature-resistant battery needs to be adopted for power supply, the sensor adopts a low-power-consumption working mode, the service life of the battery is limited, the service life of the battery is generally 2 to 5 years, and the service life of the sensor is influenced by factors such as the ambient temperature, the working interval time and the wireless data transmission frequency. After the battery life reaches the limit, the battery needs to be replaced to maintain the sensor working. That is to say, there is the work needs of maintaining and changing the battery in active power supply sensor, and general high, middle, low voltage electric power, transformer substation, distribution network are in the operation process, can not have a power failure to overhaul easily, generally only when annual overhaul, can maintain the battery of sensor. Therefore, active power supply cannot timely maintain the sensor or replace the battery even when the service life of the battery powered by a certain temperature sensor reaches the limit, namely the sensor cannot work normally. Therefore, the temperature sensor whose battery life reaches the limit cannot work, and the wireless temperature measuring device cannot completely operate. Therefore, the whole electric power operation site, such as a power distribution room, a transformer substation and the like, is subjected to potential safety hazards.
2. The passive power supply mode is the power supply mode of induction power taking, and the passive power supply mode has the same characteristics of simplicity and convenience in installation and the like. As long as the tested objects such as the bus, the busbar, the cable, the breaker contact arm and the like have the temperature, more than 6 to 7A of current flows through the temperature testing object. The sensor can be activated and operate reliably. Compared with an active power supply mode, induction power taking only achieves the condition that current flows, the sensor can normally work, so that maintenance can be basically avoided, and compared with active power supply, the limitation on the working interval time and the wireless transmission time of the sensor is small, wireless data transmission can be achieved for a short time and multiple times, and therefore the real-time performance of the temperature measurement system can be improved. The only deficiency is that the temperature measuring sensor can not work when some electric cabinets, buses, busbars and circuit breakers have power failure, power shortage and maintenance or the load current can not reach the load current of more than 6 to 7A, which is the only defect of a passive power supply mode. While active can make up for the lack of passive.
Disclosure of Invention
The invention aims to provide a wireless temperature measurement active and passive integrated temperature sensor circuit to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a passive integrated temperature sensor circuit of wireless temperature measurement active, includes passive voltage VCC _ P and active voltage VCC _ BAT, passive voltage VCC _ P is through the mains voltage that rectifier circuit, step-down, pressure regulating, steady voltage, filter circuit obtained, be connected with resistance R13 on the circuit of passive voltage VCC _ P, passive voltage VCC _ P and isolation diode D12 and isolation diode D13 are connected, isolation diode D12 and isolation diode D13 are connected with power supply VCC _3V3 on the place circuit, install the CMOS pipe Q3 of switch effect on the circuit that isolation diode D12 belongs to, still parallelly connected active voltage VCC _ BAT on the circuit that isolation diode D12 belongs to, active voltage VCC _ BAT is the mains voltage that active power supply battery BAT1 obtained through pulling switch J8, filter capacitor C13.
Preferably, when the passive voltage VCC _ P outputted from the passive circuit has a voltage, the CMOS transistor Q3 functioning as a switch is not turned on, and the power supply VCC _3V3 is supplied with the passive voltage VCC _ P through the isolation diode D13, and since the CMOS transistor Q3 functioning as a switch is not turned on, the energy of the active power supply battery BAT1 is not lost.
Preferably, when the passive voltage VCC _ P outputted by the passive circuit has no voltage, the pull-down resistor R13 ensures that the CMOS transistor Q3 functioning as a switch is turned on, and the power supply VCC _3V3 is supplied with power by the active voltage VCC _ BAT through the CMOS transistor Q3 functioning as a switch and the isolation diode D12.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts an active and passive integrated power supply mode, and the active and passive automatic seamless switching is realized by taking the CMOS tube Q3 which plays a switching role as a switching tube and matching the isolation diode D12 and the isolation diode D13 as isolation, so that the active and passive are not influenced with each other and are not interfered with each other. In addition, the sensor structure also ensures that the passive power supply is a priority power supply, and when the passive power supply is lost, the sensor structure is matched with a pull-down resistor R13 to automatically switch to an active mode, so that respective advantages and disadvantages are complemented, the whole electric power temperature measurement system is enabled to operate more perfectly, reliably and stably, and a more powerful technical guarantee is provided for the normal operation of the whole electric power station.
Drawings
FIG. 1 is a schematic diagram of the main innovative circuit of the sensor of the present invention;
fig. 2 is a schematic structural diagram of the overall working circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: a wireless temperature measurement active and passive integrated temperature sensor circuit comprises a passive voltage VCC _ P and an active voltage VCC _ BAT, wherein the passive voltage VCC _ P is a power supply voltage obtained through a rectifying circuit, a voltage reduction circuit, a voltage regulation circuit, a voltage stabilization circuit and a filter circuit, a resistor R13 is connected on a line of the passive voltage VCC _ P, the passive voltage VCC _ P is connected with an isolation diode D12 and an isolation diode D13, a power supply VCC _3V3 is connected on a line where the isolation diode D12 and the isolation diode D13 are located, a CMOS tube Q3 playing a switching role is installed on a line where the isolation diode D12 is located, the active voltage VCC _ BAT is also connected in parallel on a line where the isolation diode D12 is located, and the active voltage VCC _ BAT is a power supply voltage obtained by pulling a switch J8 and a filter capacitor C13 for an active power supply battery BAT 1.
Further, the operation principle is as shown in fig. 1, when the passive voltage VCC _ P outputted by the passive circuit has voltage, the CMOS transistor Q3 functioning as a switch is not turned on, and the power supply VCC _3V3 is supplied by the passive voltage VCC _ P through the isolation diode D13, and since the CMOS transistor Q3 functioning as a switch is not turned on, the energy of the active power supply battery BAT1 is not lost. When the passive voltage VCC _ P output by the passive circuit has no voltage, the pull-down resistor R13 ensures that the CMOS tube Q3 which plays a switching role is switched on, and the power supply VCC _3V3 is supplied by the active voltage VCC _ BAT through the CMOS tube Q3 which plays a switching role and the isolation diode D12.
It is worth noting that: fig. 1 shows a main innovative circuit of the sensor of the present invention, and fig. 2 shows an overall working circuit, except for the innovative circuit, other circuits all belong to the existing mature technology, and the specific wire connection relationship thereof is not repeated herein.
The invention adopts an active and passive integrated power supply mode, and the active and passive automatic seamless switching is realized by taking the CMOS tube Q3 which plays a switching role as a switching tube and matching the isolation diode D12 and the isolation diode D13 as isolation, so that the active and passive are not influenced with each other and are not interfered with each other. In addition, the sensor structure also ensures that the passive power supply is a priority power supply, and when the passive power supply is lost, the sensor structure is matched with a pull-down resistor R13 to automatically switch to an active mode, so that respective advantages and disadvantages are complemented, the whole electric power temperature measurement system is enabled to operate more perfectly, reliably and stably, and a more powerful technical guarantee is provided for the normal operation of the whole electric power station.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a passive integrated temperature sensor circuit of wireless temperature measurement active which characterized in that: the power supply circuit comprises a passive voltage VCC _ P and an active voltage VCC _ BAT, wherein the passive voltage VCC _ P is a power supply voltage obtained through a rectifying circuit, a voltage reduction circuit, a voltage regulation circuit, a voltage stabilization circuit and a filter circuit, a resistor R13 is connected to a line of the passive voltage VCC _ P, the passive voltage VCC _ P is connected with an isolation diode D12 and an isolation diode D13, a power supply VCC _3V3 is connected to a line where the isolation diode D12 and the isolation diode D13 are located, a CMOS tube Q3 playing a switching role is installed on the line where the isolation diode D12 is located, the active voltage VCC _ BAT is also connected in parallel to the line where the isolation diode D12 is located, and the active voltage VCC _ BAT is a power supply voltage obtained by pulling a switch J8 and a filter capacitor C13 for an active power supply battery BAT 1.
2. The wireless temperature measurement active-passive integrated temperature sensor circuit according to claim 1, characterized in that: when the passive voltage VCC _ P output by the passive circuit has voltage, the CMOS tube Q3 which plays a role of switch is not conducted, the power supply VCC _3V3 is supplied by the passive voltage VCC _ P through the isolation diode D13, and the energy of the active power supply battery BAT1 is not lost because the CMOS tube Q3 which plays a role of switch is not conducted.
3. The wireless temperature measurement active-passive integrated temperature sensor circuit according to claim 1, characterized in that: when the passive voltage VCC _ P output by the passive circuit has no voltage, the pull-down resistor R13 ensures that the CMOS tube Q3 which plays a switching role is switched on, and the power supply VCC _3V3 is supplied with power by the active voltage VCC _ BAT through the CMOS tube Q3 which plays a switching role and the isolation diode D12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387923.6A CN111412998A (en) | 2019-12-30 | 2019-12-30 | Wireless temperature measurement active and passive integrated temperature sensor circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387923.6A CN111412998A (en) | 2019-12-30 | 2019-12-30 | Wireless temperature measurement active and passive integrated temperature sensor circuit |
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| CN111412998A true CN111412998A (en) | 2020-07-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204316176U (en) * | 2014-12-18 | 2015-05-06 | 陕西赛雷博瑞新能源科技有限公司 | A kind of management system of dual power supply |
| CN205002895U (en) * | 2015-09-30 | 2016-01-27 | 杭州凯源电子有限公司 | Passive temperature measuring device |
| US20170047791A1 (en) * | 2015-08-12 | 2017-02-16 | Samsung Electronics Co., Ltd | Electronic device having wireless power transmitting/receiving conductive pattern |
| CN108565957A (en) * | 2018-02-01 | 2018-09-21 | 上海移为通信技术股份有限公司 | A kind of power supply seamless switch-over system and method |
| CN108808841A (en) * | 2018-06-29 | 2018-11-13 | 南方电网科学研究院有限责任公司 | A kind of Power transfer system and intelligent electric energy meter |
-
2019
- 2019-12-30 CN CN201911387923.6A patent/CN111412998A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204316176U (en) * | 2014-12-18 | 2015-05-06 | 陕西赛雷博瑞新能源科技有限公司 | A kind of management system of dual power supply |
| US20170047791A1 (en) * | 2015-08-12 | 2017-02-16 | Samsung Electronics Co., Ltd | Electronic device having wireless power transmitting/receiving conductive pattern |
| CN205002895U (en) * | 2015-09-30 | 2016-01-27 | 杭州凯源电子有限公司 | Passive temperature measuring device |
| CN108565957A (en) * | 2018-02-01 | 2018-09-21 | 上海移为通信技术股份有限公司 | A kind of power supply seamless switch-over system and method |
| CN108808841A (en) * | 2018-06-29 | 2018-11-13 | 南方电网科学研究院有限责任公司 | A kind of Power transfer system and intelligent electric energy meter |
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Application publication date: 20200714 |
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