CN203432715U - Self-power high voltage electricity wireless temperature measurement terminal - Google Patents
Self-power high voltage electricity wireless temperature measurement terminal Download PDFInfo
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- CN203432715U CN203432715U CN201320466508.1U CN201320466508U CN203432715U CN 203432715 U CN203432715 U CN 203432715U CN 201320466508 U CN201320466508 U CN 201320466508U CN 203432715 U CN203432715 U CN 203432715U
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Abstract
The utility model discloses a self-power high voltage electricity wireless temperature measurement terminal, comprising a self-excited power supply, a temperature sensor and a data processing apparatus. The self-excited power supply comprises an induction coil, an iron core and a power supply processing circuit, wherein the induction coil is winded on the iron core, and the iron core is placed in the wireless temperature measurement terminal and is placed on a high voltage bus with the wireless temperature measurement terminal; the power supply processing circuit comprises a rectification and voltage stabilization module; the induction voltage of the induction coil provides power for the wireless temperature measurement terminal through the power supply processing circuit; the self-excited power supply utilizes the electromagnetic induction voltage of the coil in a bus magnetic field to provide power for the wireless temperature measurement terminal. The self-power high voltage electricity wireless temperature measurement terminal can effectively overcome the problem that a present high voltage electricity self-excited power supply can not obtain voltage when the bus current is smaller and can generate saturation when the bus current is heavier, which leads to high voltage spike pulse and damages subsequent circuits. The self-power high voltage electricity wireless temperature measurement terminal has a small size, is easy to install, can not generate saturation, avoids high voltage spike pulse and has great application values.
Description
Technical field
The utility model relates to a kind of self-powered high-tension electricity wireless temperature-measuring terminal, belongs to power measurement technical field.
Background technology
At present, in power transmission and transformation system, the power equipments such as current carrying bus, busbar there will be temperature rise too high when the excessive or surperficial appearance of load current oxidation, do not add processing for a long time and can make adjacent component capabilities deteriorated, cause puncturing, fault outage.According to Safe Production Supervision, department provides data analysis, in the major accident that national power transmission and transformation occur, more than 90 percent is to cause due to overheated, causes tremendous economic loss, the safety that is also threatening lives and properties to production and operation simultaneously.Ruuning situation by monitoring bus contact joint, high-voltage cable joint, high-voltage switch gear contact temperature, can effectively prevent the generation of high voltage power transmission and transforming fault, for realizing safety in production, provides effective guarantee.
Many busbars are in noble potential (6KV, 10KV, 35KV, 110KV, 220KV etc.), and high-tension electricity temperature survey need to possess following condition:
1. whole equipment is in (6KV-550KV) high voltage environment;
2. allow system overlond running at short notice, but must before bus temperature jeopardizes security of operation, send alerting signal;
3. because temperature rise is caused by load current, temperature changes with load (time), therefore needs real time on-line monitoring time interval record in accordance with regulations;
4. bus temperature is one of POWER SYSTEM STATE parameter, is comprehensive monitor system state, requires bus temperature measurement mechanism Digital output, so that computing machine processing, and can match with other electric parameters;
5. not allowed secondary power supply line and signal wire and a bus to have adheres to and annexation;
6. long-time independent operating can not frequent maintenance, and long-time (at least 10 years) are uninterruptedly in running order, work long hours in the impalpable environment of people;
7. can work in high-intensity magnetic field and strong electric field environment, antijamming capability is strong.
Domestic common several high-tension electricity temp measuring methods respectively at present: temperature display wax sheet method, infrared thermometer, optical fiber temperature measurement system and wireless temperature measurement system.Temperature display wax sheet method and utilize infrared thermometer all to need artificial inspection, cannot obtain real time data, although optical fiber temperature measurement system can obtain real time data, but high-low pressure environment is not kept apart, do not meet high-voltage electrical apparatus instrument standard, and that optical fiber also has is easy to break, easily broken, non-refractory, the shortcomings such as difficulty is larger that connect up in cabinet, therefore also possesses very large defect.The wireless temperature measurement system occurring now adopts wireless transmission method, link and attachment issue between primary circuit and secondary circuit have been solved, greatly improved high pressure Electrical Safety, can pass through the Internet of things system real-time transmission data of structure, and can realize remote monitoring.Many-sided superiority of wireless temperature measurement system makes it become the trend of the times of high-tension electricity temp measuring system development.
Existing wireless temperature measurement system, that temperature sensor is placed in to temperature measurement terminal inside mostly, each point for measuring temperature is installed a temperature measurement terminal, such shortcoming is: the high temperature of point for measuring temperature is all influential to the stability of the electronic devices and components of temperature measurement terminal internal data processing unit and serviceable life, therefore, for this series products, temperature measurement terminal need to be arranged on apart from heat generating spot place certain distance, that temperature is relatively low, but also there is certain distance in temperature sensor and point for measuring temperature like this, and temperature survey exists error.During use, in order to reduce temperature measurement error, improve measuring accuracy simultaneously, the high temperature side warm spot of temperature sensor need being tried one's best, and the data processing unit of temperature measurement terminal is as far as possible away from heat generating spot; Meanwhile, in order reducing, to install and use cost, should suitably to reduce the quantity of temperature measurement terminal, or it is suitable with each temperature measurement terminal, can to provide multiple sensor to be measured as.
It is exactly Power supply problem that wireless temperature measurement system now also has a fatal weakness.Wireless temperature measurement system now adopts powered battery mostly, and the life-span of internal battery, the restriction of battery size to apparent size, all have impact more or less to product.Adopt high-energy battery to add Low-power Technology, in the also at most only 3 years life-span of battery, brought great difficulty and cost therefore to the maintenance of system.In the environment that is simultaneously difficult for arriving personnel, safeguard or change battery and will become the thing that can not complete, directly affected the normal use of product.Visible, self-powered technology has become the inevitable requirement of high-tension electricity temp measuring system development.For this reason, there are many researchers both at home and abroad to wish to seek directly from high voltage bus to be measured magnetic field, to obtain energy as the scheme of high-pressure side low-voltage equipment power supply by electromagnetic induction.In these schemes, mostly adopt and utilize specific current mutual inductor (CT) as the mode of self-excitation power supply, there is following shortcoming in these modes: due to unshakable in one's determination closed, when electric current is excessive, easily there is saturated fever phenomenon, due to saturated, can produce high voltage spikes, because heating can produce demagnetization phenomenon, form vicious cycle, deal with very difficultly, strengthened volume and the cost of equipment; Simultaneously the make of annular is unfavorable for installing, and such as cannot erecting equipment on the bus having completed, have affected practicality.
Utility model content
Utility model object: the purpose of this utility model is exactly to overcome the defect that prior art exists, and provides a kind of and can obtain from bus current the self-powered high-tension electricity wireless temperature-measuring terminal of energy.
Technical scheme: the utility model has been taked following technical scheme:
A kind of self-powered high-tension electricity wireless temperature-measuring terminal, comprise self-excitation power supply, temperature sensor and data processing equipment, it is characterized in that: described wireless temperature-measuring terminal is installed on bus, described self-excitation power supply comprises inductive coil, iron core and power supply processing circuit, described inductive coil is wrapped on described iron core, described iron core is positioned over described wireless temperature-measuring terminal inside and is positioned on high voltage bus with described wireless temperature-measuring terminal, described power supply processing circuit comprises rectification and Voltage stabilizing module, the induced voltage of described inductive coil is described wireless temperature-measuring terminal power supply after described power supply processing circuit, the electromagnetic induction voltage of described self-excitation power utilization bus magnetic field coil is wireless temperature-measuring terminal power supply.
Described iron core is square iron core, and material is ferrite, described opening unshakable in one's determination.
Described data processing equipment comprises A/D modular converter, single-chip microcomputer and wireless transmitter module, described inductive coil and bus electromagnetic induction, the induced voltage that described inductive coil produces provides power supply for described temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module, the temperature signal that described temperature sensor records passes to described single-chip microcomputer after described A/D modular converter, single-chip microcomputer carries out two-way communication by described wireless transmitter module and outside, on described wireless transmitter module, is connected with antenna.
Between described single-chip microcomputer and wireless transmitter module, adopt spi bus to be connected.
The quantity of the described temperature sensor that described wireless temperature-measuring terminal connects is at least 1.A wireless temperature-measuring terminal connects multi way temperature sensor, has simplified equipment, has improved service efficiency, has reduced cost.
In described wireless temperature-measuring terminal, can there are No. 10 temperature sensors, be arranged in respectively the two sides of wireless temperature-measuring terminal, 5 sensors of every side, symmetria bilateralis.Each road temperature sensor length is different, and five sensors of every side lengthen successively.Equipment size can carry out particular design according to the width of busbar.
Described temperature sensor adopts ceramic package.
Described temperature sensor and data processing equipment are separated, and described temperature sensor is connected by lead-in wire with data processing equipment.Temperature sensor is separated with data processing equipment, temperature sensor adopts ceramic package, this kind of design can guarantee temperature sensor from high pressure point for measuring temperature enough close to, do not affect the electronic component of data processing circuit simultaneously, thereby improved the measuring accuracy of temperature measurement terminal, adopt the design of habitual electronic circuit simultaneously, make to have reduced cost.
It also comprises temperature measurement terminal shell, and described shell is separated with described temperature sensor.
It also comprises circuit board, two lead-in wire links of described inductive coil are to described circuit board, after overcommutation, voltage stabilizing, exporting the required operating voltage of described wireless temperature-measuring terminal, is described temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module power supply.
Beneficial effect: the following advantage that the utlity model has that adopts technique scheme:
1, iron core is square iron core, can be placed in easily wireless temperature-measuring terminal inside.Utilize the wireless temperature-measuring terminal of this Core Design self-excitation power supply, install very conveniently, broken through ring-shaped core and on the facilities such as bus, be difficult to the difficult point of installing;
2, iron core is not closed, has avoided the saturated phenomenon of ring-shaped core and by saturated high voltage spikes phenomenon and the problems of excessive heat of bringing, has not only improved the performance of self-excitation power-supply system, has reduced cost simultaneously yet, has reduced volume;
3, adopt the temperature sensor design separated with data processing equipment, improved the reliability of measuring accuracy and system.Temperature sensor adopts ceramic package, withstand voltage, high temperature resistant, heat conductivity is good;
4,, owing to having solved powerup issue, a wireless temperature-measuring terminal can connect multi way temperature sensor, has simplified equipment, has improved service efficiency, has reduced cost.
5, adopt the mode of inductive coil power supply, avoided the restriction of powered battery to temperature measurement terminal shape, wireless temperature-measuring terminal can be applied in the transmission of electricity case of various sealings more neatly.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model;
Fig. 2 is self-excitation power principle block diagram described in the utility model;
Fig. 3 is the use state profile of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model;
Fig. 4 is the use state vertical view of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model;
In figure: 1-inductive coil, 2-bus, 3-circuit board, 4-antenna, 5-shell, 6-lead-in wire, 7-temperature sensor, 8-iron core.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 is the fundamental diagram of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model.As shown in Figure 1, self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model, comprises inductive coil 1, temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module.There is electromagnetic induction with bus 2 in inductive coil 1, voltage by induction provides power supply for temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module, the temperature signal that temperature sensor records passes to single-chip microcomputer after A/D modular converter, single-chip microcomputer carries out two-way communication by wireless transmitter module and outside, on wireless transmitter module, be connected with antenna 4, between single-chip microcomputer and wireless transmitter module, adopt spi bus to be connected.The iron core 8 of inductive coil 1 is not closed.
Fig. 2 is self-excitation power principle block diagram described in the utility model.As shown in Figure 2, self-excitation power supply described in the utility model comprises inductive coil 1, iron core 8, rectification circuit, mu balanced circuit.Inductive coil 1 is wound on unshakable in one's determination 8, with wireless temperature-measuring terminal, is placed on high voltage bus 2, when high voltage bus 2 passes to alternating current, will in inductive coil 1, induce voltage.The voltage inducing is alternating voltage, becomes DC voltage after rectification circuit, the required voltage of exportable high-tension electricity wireless temperature-measuring terminal work after mu balanced circuit.
Fig. 3 is the use state profile of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model.As shown in Figure 3, because temperature sensor is placed in point for measuring temperature place, so invisible in sectional view.Wireless temperature-measuring terminal comprises temperature sensor, inductive coil 1, iron core 8, circuit board 3, antenna 4 and housing 5.Inductive coil 1 is wrapped on unshakable in one's determination 8, is positioned over wireless temperature-measuring terminal inside, with wireless temperature-measuring terminal, is positioned on high voltage bus 2, while passing to alternating current in bus 2, in inductive coil 1, will induce induced voltage.Two lead-in wires of inductive coil 1 connect to circuit board 3, and the required operating voltage of exportable wireless temperature-measuring terminal after rectification, voltage stabilizing is temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module power supply.
Fig. 4 is the use state vertical view of self-powered high-tension electricity wireless temperature-measuring terminal described in the utility model.As shown in Figure 4, temperature sensor and data processing equipment all adopt corrosion-resistant, and anti-high and low temperature material is made, the demand that can conform.Temperature sensor is connected with lead-in wire 6 with data processing equipment, makes the two keep certain distance (10～20cm).The design that adopts temperature sensor and data processing equipment to be separated, can make temperature sensor more near point for measuring temperature, thereby obtain data more accurately; Data processing equipment, relatively away from point for measuring temperature, has further protected the electronic devices and components in data processing equipment not to be subject to temperatures involved, makes system more stable.Equipment is installed on high voltage bus 2, equipment when work, owing to there being electric current to flow through bus 2, being arranged on the magnetic field that bus 2 inductive coil 1 around utilizes electromagnetic induction principle that bus 2 is generated and being converted into the electric energy to wireless temperature-measuring terminal power supply.A wireless temperature-measuring terminal can connect a plurality of temperature sensors, the temperature analog signal that each temperature sensor collects is sent in data processing equipment, via A/D (analog/digital) modular converter, digital signal is sent into single-chip microcomputer and process, and be uploaded in host computer by wireless transmitter module.Wireless temperature-measuring terminal is distributed on three parallel buses 2, can form short-range wireless networking data are sent to convergence terminal.In consolidated network, can there are thousands of such wireless temperature-measuring terminals simultaneously.A wireless temperature-measuring terminal can be connected with multi way temperature sensor, in a preferred wireless temperature-measuring terminal, can have No. 10 temperature sensors, is arranged in respectively the two sides of wireless temperature-measuring terminal, 5 sensors of every side, symmetria bilateralis.Each road temperature sensor length is different, and five sensors of every side lengthen successively.Equipment size can carry out particular design according to the width of bus 2.
Above embodiment of the present utility model is described in detail; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications; these improvements and modifications also should be considered as protection of the present utility model, and protection domain of the present utility model is as the criterion with claims.
Claims (9)
1. a self-powered high-tension electricity wireless temperature-measuring terminal, comprise self-excitation power supply, temperature sensor and data processing equipment, it is characterized in that: described wireless temperature-measuring terminal is installed on bus (2), described self-excitation power supply comprises inductive coil (1), (8) and power supply processing circuit unshakable in one's determination, described inductive coil (1) is wrapped on described iron core (8), described iron core (8) is positioned over described wireless temperature-measuring terminal inside and is positioned on high voltage bus (2) with described wireless temperature-measuring terminal, described power supply processing circuit comprises rectification and Voltage stabilizing module, the induced voltage of described inductive coil (1) is described wireless temperature-measuring terminal power supply after described power supply processing circuit, the electromagnetic induction voltage of described self-excitation power utilization bus magnetic field coil is wireless temperature-measuring terminal power supply.
2. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, is characterized in that: described iron core (8) is square iron core, and material is ferrite, described iron core (8) opening.
3. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, it is characterized in that: described data processing equipment comprises A/D modular converter, single-chip microcomputer and wireless transmitter module, described inductive coil (1) and bus (2) electromagnetic induction, the induced voltage that described inductive coil (1) produces is described temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module provide power supply, the temperature signal that described temperature sensor records passes to described single-chip microcomputer after described A/D modular converter, single-chip microcomputer carries out two-way communication by described wireless transmitter module and outside, on described wireless transmitter module, be connected with antenna (4).
4. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 3, is characterized in that: between described single-chip microcomputer and wireless transmitter module, adopt spi bus to be connected.
5. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, is characterized in that: the quantity of the described temperature sensor that described wireless temperature-measuring terminal connects is at least 1.
6. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, is characterized in that: described temperature sensor adopts ceramic package.
7. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, is characterized in that: described temperature sensor and data processing equipment are separated, and described temperature sensor is connected by lead-in wire (6) with data processing equipment.
8. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, is characterized in that: it also comprises temperature measurement terminal shell (5), and described shell (5) is separated with described temperature sensor.
9. self-powered high-tension electricity wireless temperature-measuring terminal according to claim 1, it is characterized in that: it also comprises circuit board (3), two lead-in wire links of described inductive coil (1) are to described circuit board (3), after overcommutation, voltage stabilizing, exporting the required operating voltage of described wireless temperature-measuring terminal, is described temperature sensor, A/D modular converter, single-chip microcomputer and wireless transmitter module power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320466508.1U CN203432715U (en) | 2013-08-01 | 2013-08-01 | Self-power high voltage electricity wireless temperature measurement terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320466508.1U CN203432715U (en) | 2013-08-01 | 2013-08-01 | Self-power high voltage electricity wireless temperature measurement terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424209A (en) * | 2013-08-01 | 2013-12-04 | 苏州迪芬德物联网科技有限公司 | Self-powered high-voltage electric power wireless temperature-measurement terminal |
| CN104501976A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Passive wireless temperature acquisition system |
| CN107709945A (en) * | 2015-04-24 | 2018-02-16 | 阿联酋大学 | The temperature monitoring using wireless energy transfer of subject |
| CN108168725A (en) * | 2018-01-16 | 2018-06-15 | 山东乾立光电科技有限公司 | A kind of passive and wireless temp measuring method and device |
-
2013
- 2013-08-01 CN CN201320466508.1U patent/CN203432715U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424209A (en) * | 2013-08-01 | 2013-12-04 | 苏州迪芬德物联网科技有限公司 | Self-powered high-voltage electric power wireless temperature-measurement terminal |
| CN104501976A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Passive wireless temperature acquisition system |
| CN107709945A (en) * | 2015-04-24 | 2018-02-16 | 阿联酋大学 | The temperature monitoring using wireless energy transfer of subject |
| CN108168725A (en) * | 2018-01-16 | 2018-06-15 | 山东乾立光电科技有限公司 | A kind of passive and wireless temp measuring method and device |
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| GR01 | Patent grant | ||
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Granted publication date: 20140212 |