CN102289924B - Temperature measurement device for overhead power transmission line - Google Patents
Temperature measurement device for overhead power transmission line Download PDFInfo
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- CN102289924B CN102289924B CN2011101333126A CN201110133312A CN102289924B CN 102289924 B CN102289924 B CN 102289924B CN 2011101333126 A CN2011101333126 A CN 2011101333126A CN 201110133312 A CN201110133312 A CN 201110133312A CN 102289924 B CN102289924 B CN 102289924B
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 19
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 9
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Abstract
The invention discloses a temperature measurement device for an overhead power transmission line. The temperature measurement device comprises an intelligent sensor and a data acquiring unit communicated with the intelligent sensor through a standard communication interface, wherein the intelligent sensor comprises a sensing terminal for acquiring the temperature of a power transmission conductor and a management terminal arranged on a tower. Only one lithium battery is used for supplying power on the basis of a clock synchronous working mode; therefore, the state of the overhead power transmission line can be monitored for a long term, the power consumption of a device for monitoring the state of the power transmission line is reduced, and the reliability of the system is improved; the standard communication interface is provided for the external so that the temperature measurement device can be conveniently accessed into the data acquiring unit with a standard communication interface, thus strong generality and expandability can be achieved; a chip-level wireless SoC (system on chip) is adopted between the management terminal and the sensing terminal; therefore, the temperature measurement device is small in volume, low in power consumption and long in communication distance, meets the communication requirement for state monitoring of power transmission line state, and reduces the unreliability factor caused by an externally integrated wireless communication module.
Description
Technical field
The present invention relates to a kind of temperature measurement device for overhead power transmission line, belong to the power technology field.
Background technology
The general span of transmission line of electricity is large, wide coverage, and for a long time moves under condition complicated and changeable, therefore finds early accident potential and is in time got rid of, make its be in move under the good state very important.Existing conductor temperature measurement mechanism generally is comprised of sensing terminal (Smart Sensor Terminal is called for short SST) and data acquisition unit (Data Collection Unit is called for short DCU).DCU directly carries out data acquisition to SST, and the communication interface between DCU and the SST is external private radio communication module.During work, order is issued to SST in descending mode from DCU, after SST receives order, sends data back to DCU by its outside integrated wireless communication module.Sensing terminal SST is in the wait accepting state when flat, can not enter sleep state and save power consumption, so its working current is larger, so that wire temperature measuring equipment power dissipation ratio is larger, often adopts the mode of power taking on accumulator or the line to keep its operation.On the other hand, adopt wireless communication module to communicate between existing wire temperature sensor and data acquisition unit, its versatility and opening are bad, are inconvenient to be linked into the data acquisition unit of other types interface.Simultaneously, wire temperature sensor integrated wireless module and data acquisition unit communicate, and its volume and power consumption are larger, have increased the burden of power transmission state monitoring system power supply supply and have reduced its reliability of operation.
Summary of the invention
Technical matters to be solved by this invention provides a kind of overhead power transmission conducting wire temperature measuring equipment, and is low in energy consumption, do not need storage battery power supply, has more versatility, conveniently is linked into the data acquisition unit of polytype interface.
For solving the problems of the technologies described above, the invention provides a kind of temperature measurement device for overhead power transmission line, it is characterized in that, comprise
Intelligence sensor, described intelligence sensor comprise the sensing terminal that gathers the transmission pressure temperature and the office terminal that is located on the shaft tower,
The data acquisition unit of communicating by letter with described intelligence sensor by standard communication interface.
Described standard communication interface or be the RS485 interface, or be the RS232 interface, or be the SDI-12 bus interface.
Described sensing terminal is located on the transmission pressure.
Described data acquisition unit is located on the shaft tower.
Described sensing terminal, office terminal, data acquisition unit clock synchronous.
Described sensing terminal comprises wireless SOC, radio-frequency (RF) impedance match circuit, watchdog circuit, procedure simulation jtag interface, lithium battery, low pressure difference linear voltage regulator, external crystal-controlled oscillation, temperature survey chip.
Temperature-sensitive face and the transmission pressure surface of described temperature survey chip are affixed.
Described office terminal comprises wireless SOC microprocessor, radio-frequency (RF) impedance match circuit, watchdog circuit, procedure simulation jtag interface, low pressure difference linear voltage regulator, external crystal-controlled oscillation.
Described standard communication interface circuit one end is connected with described wireless SOC microprocessor, and the other end is connected with described data acquisition unit.
The input end of described low pressure difference linear voltage regulator connects external power source, and output terminal is connected on the power bus of described office terminal.
The beneficial effect that the present invention reaches:
1) the present invention is a kind of transmission pressure temperature measuring equipment of the low-power consumption based on the clock synchronous working method, only use 1 joint lithium battery power supply, just the long term monitoring that can be used for built on stilts power transmission and transformation line state, greatly reduce the power transmission state monitoring device power consumption, reduced the requirement of system to power supply, improved the reliability of system.
2) the present invention comprises sensing terminal SST and the integrated intelligence sensor of office terminal SSC, and it externally provides the communication interface of standard, can be linked into easily the data acquisition unit DCU with standard communication interface, and its Universal and scalability is very strong.
3) the present invention has adopted the wireless SOC (system on a chip) of chip-scale between office terminal SSC and sensing terminal SST, its volume is little, low in energy consumption, communication distance is far away, well satisfied the communicating requirement of power transmission state monitoring, easy to use, reduced the unreliability factors that outside integrated wireless communication module brings.
Description of drawings
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the theory diagram of SST;
Fig. 3 is the schematic block circuit diagram of SSC.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
As shown in Figure 1, the wire temperature measuring equipment of a kind of low-power consumption of the present invention comprises the sensing terminal SST1(Smart Sensor Terminal that is installed on the transmission pressure), be installed in the office terminal SSC2(Smart Sensor Controller on the shaft tower) and data acquisition unit DCU3(Data Collection Unit).Wherein SST1 adopts lithium battery power supply, and the timing acquiring sensor values is sent to SSC2 by wireless mode; SSC2 is regularly received the data of SST1 and gives data acquisition unit by the RS485 bus with the SST1 data by data acquisition unit DCU3 power supply.
SST1 and SSC2 have formed an intelligence sensor, and SST1 is responsible for the collection of temperature data, and SSC2 is responsible for the temperature data transmission and externally communicates by letter with data acquisition unit DCU3 by standard SDI-12 agreement.
DCU3, SST1, SSC2 three have realized little power consumption data collection and transmission take clock synchronous as the basis, the specific works mode is as follows: during device initialization operation, at first by DCU3 and SSC2 carry out the time to the time, finish the clock synchronous of DCU3 and SSC2, then by SSC2 and SST1 carry out the time to the time, finish the clock synchronous of SSC2 and SST1; After finishing synchronously, DCU3, SST1, all be in the dormant state of extremely low power dissipation when SSC2 is flat, and by certain Wakeup interval synchronous working (giving tacit consent to minimum Wakeup interval is 5 minutes, can set according to actual condition); During SST1 work, the pick-up transducers data, open wireless radio frequency interface sends data to SSC2 by wireless mode, and wait acknowledge or control command, enters immediately dormant state after the stand-by period is overtime; During SSC2 work, start wireless radio frequency circuit, wait receives the SST1 data and replys, if receive the order that the DCU3 end sends over, then should order arrive SST1 by wireless forwarding, enters immediately dormant state after the stand-by period is overtime; DCU3 when work, wake SSC2 up by 485 buses, the concurrent order of losing one's life is obtained from SSC2 and is preserved the SST1 data, if do not receive remote command then enter immediately dormant state.
The key that realizes the low-power consumption temperature measuring equipment is to keep DCU3, SST1, SSC2 three's clock synchronous, must give to the reliability of clock synchronous sufficient consideration, the technical scheme of specific design is as follows: DCU3, SSC2, SST1 three's wake-up period is necessary for the integral multiple of measuring the interval, guarantees that the three can wake up simultaneously; After SSC2 receives the SST1 data, if find that SST1 does not finish synchronously, then SST1 is carried out clock synchronous one time; DCU3, SSC2, SST1 carry out one time clock synchronous every day at certain time intervals afterwards, to guarantee can not caused by the drift of external clock the step-out of clock.
Below for by reference to the accompanying drawings, carry out specific description for each subitem in the invention.
Fig. 2 is the theory diagram of SST of the present invention, SST1 comprises that mainly wireless SOC11, radio-frequency (RF) impedance match circuit 14, watchdog circuit 13, procedure simulation jtag interface are called for short jtag interface 12, lithium battery 17, low pressure difference linear voltage regulator abbreviation LDO16, external crystal-controlled oscillation 15 and temperature survey chip 10, and the I2C part in VCC and the I2C interface 18 is connected with wireless SOC11; VCC part in VCC and the I2C interface 18 is connected with the VCC of LDO16 module output; VCC and I2C interface 18 are connected with VCC and the I2C interface 19 of temperature survey chip 10 by winding displacement, for temperature survey chip 10 provides power supply and the temperature transition signal is linked into wireless SOC11.
Wherein, temperature survey chip 10 is key chips of wire thermometric, and its output is connected with wireless SOC11, is responsible for obtaining the simulating signal of conductor temperature and this signal is converted to digital signal gathering for wireless SOC11.When installing and using, its temperature-sensitive face and conductive line surfaces are close to, with the accuracy of conductor temperature that guarantee to measure.Adopt the ADT7410 chip as temperature survey chip 10 in the present embodiment, the AD7410 chip has very wide measurement range, and temperature range is :-55 ℃-150 ℃, and absolute precision can reach ± and 1 ℃, can well satisfy the requirement that conductor temperature is measured.
External crystal-controlled oscillation 15 is clock reference sources of whole SST1 work, output is connected to the timer conter of wireless SOC11 inside, when counter reaches the wake-up period value, SST1 enters from sleep state and wakes attitude up, beginning collecting temperature signal, gather and finish rear open wireless radio frequency interface, the temperature data that gathers is sent to SSC by wireless mode; (generally be no more than 5 seconds) when counter reaches wake-up waiting during the time, SST1 closes wireless radio interface, enters sleep state by waking attitude up.This shows, it is very short that SST1 is in the time of waking attitude up, is generally a second level, is in the sleep state of little power consumption at most of time.
Wireless SOC11 is a kind of atomic power consumption, small size, the wireless SOC (system on a chip) take 51 type single-chip microcomputers as kernel, and its core component as SST1 is responsible for the signal of collecting temperature measurement chip 10 and is communicated by wireless radio interface and SSC.This chip operation only has the electric current about 1 microampere when sleep state, have the wireless transmission modulation systems such as FSK, GFSK, OOK, and peak power output reaches 20dBm, and receiving sensitivity is-121dBm that maximum transmission distance can reach 2000 meters.
The power supply supply of SST1 is comprised of lithium battery 17 and 3.3V LDO16, LDO(low dropout regulator) be low pressure difference linear voltage regulator, lithium battery 17 output 3.6V voltages through 3.3V LDO module level conversion output 3.3V voltage, are whole SST1 circuit supply to 3.3V LDO16.Lithium battery 17 volumes are little, lightweight, are convenient to install, and alleviated the load-bearing to transmission line of electricity, and capacity are large, can satisfy the need for electricity of SST1 long term monitoring on transmission line of electricity.
The input of the watchdog circuit 13 of SST1 all is connected on the external pin of wireless SOC11 with output, and its feeding-dog signal is given in its input as wireless SOC11, and output is as the reset signal of wireless SOC11.Open between the SST1 awake period, wireless SOC11 must export feeding-dog signal by the interval certain hour, otherwise after exceeding given interval time, watchdog circuit 13 will be exported reset enable signal SST11 and reset.Watchdog circuit 13 mainly occurs the deadlock phenomenon for fear of SST1 at the work run duration, has guaranteed the reliability of SST1 long-time running.
Radio-frequency (RF) impedance match circuit 14 is the peripheral match circuit of radio communication, and it is connected with the wireless peripheral passage of wireless SOC11 inside.When SST1 entered dormant state, circuit was not worked, and only just opened when SST1 wakes up, and the radio frequency interface that provides by radio-frequency (RF) impedance match circuit 14 can carry out radio communication with SSC.JTAG interface 12 is the procedure simulation of wireless SOC11 single-chip microcomputer, the interface that program is downloaded.
Fig. 3 is the schematic block circuit diagram of SSC2, mainly comprises wireless SOC microprocessor 21, radio-frequency (RF) impedance match circuit 25, watchdog circuit 23, procedure simulation jtag interface 22, LDO27, external crystal-controlled oscillation 26, RS485 interface circuit 24.As a whole, the theory diagram of SSC and SST is very similar, wherein characteristic and the function of the wireless SOC among wireless SOC microprocessor 21, radio-frequency (RF) impedance match circuit 25, watchdog circuit 23, procedure simulation jtag interface 22, external crystal-controlled oscillation 26 and Fig. 2 SST, radio-frequency (RF) impedance match circuit, watchdog circuit, jtag interface, external crystal-controlled oscillation are identical, are not repeated at this.
LDO27 in the present embodiment adopts the input end of 3.3V LDO27 to connect external power source 4, and output is connected on the power bus of whole SSC2, and its effect is that the 12V power supply that external power source 4 is inputted is converted to 3.3V output.Because SSC2 is mounted in the equipment on the shaft tower, therefore come as external power source 4 by the accumulator that is fixed in shaft tower and solar facilities.
RS485 interface circuit 24 is the easy-to-use standard interfaces of a kind of convenience, and is all accessible to SSC2 by the DCU equipment of these all kinds of manufacturers of interface.
Those of ordinary skills can recognize, interface used herein not only can be the RS485 interface circuit, also can substitute with the other standards interface such as RS232 standard interface, SDI-12 bus interface etc.
The function of data acquisition unit DCU equipment is simpler, and implementation can be diversified, only describes its external function at this, the physical circuit principle of its inside do not narrated.In the wire temperature measuring equipment, the major function of DCU is the clock of the running parameter of SST, the temperature data that reads SST and calibration SSC to be set with the clock synchronous of realization and SSC, SST by the RS485 interface.In addition, DCU also is shaft tower equipment, and its power supply mode is conventional shaft tower power devices mode, i.e. accumulator and sun power.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (9)
1. a temperature measurement device for overhead power transmission line is characterized in that, comprises
Intelligence sensor, described intelligence sensor comprise the sensing terminal that gathers the transmission pressure temperature and the office terminal that is located on the shaft tower,
The data acquisition unit of communicating by letter with described intelligence sensor by standard communication interface;
Described sensing terminal comprises wireless SOC, radio-frequency (RF) impedance match circuit, watchdog circuit, procedure simulation jtag interface, lithium battery, low pressure difference linear voltage regulator, external crystal-controlled oscillation, temperature survey chip.
2. a kind of temperature measurement device for overhead power transmission line according to claim 1 is characterized in that, described standard communication interface or be the RS485 interface, or be the RS232 interface, or be the SDI-12 bus interface.
3. a kind of temperature measurement device for overhead power transmission line according to claim 1 is characterized in that, described sensing terminal is located on the transmission pressure.
4. a kind of temperature measurement device for overhead power transmission line according to claim 1 is characterized in that, described data acquisition unit is located on the shaft tower.
5. a kind of temperature measurement device for overhead power transmission line according to claim 1 is characterized in that, described sensing terminal, office terminal, data acquisition unit clock synchronous.
6. a kind of temperature measurement device for overhead power transmission line according to claim 1 is characterized in that, temperature-sensitive face and the transmission pressure surface of described temperature survey chip are affixed.
7. a kind of temperature measurement device for overhead power transmission line according to claim 1, it is characterized in that, described office terminal comprises wireless SOC microprocessor, radio-frequency (RF) impedance match circuit, watchdog circuit, procedure simulation jtag interface, low pressure difference linear voltage regulator, external crystal-controlled oscillation.
8. a kind of temperature measurement device for overhead power transmission line according to claim 7 is characterized in that, described standard communication interface circuit one end is connected with described wireless SOC microprocessor, and the other end is connected with described data acquisition unit.
9. a kind of temperature measurement device for overhead power transmission line according to claim 7 is characterized in that, the input end of described low pressure difference linear voltage regulator connects external power source, and output terminal is connected on the power bus of described office terminal.
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| CN2011101333126A CN102289924B (en) | 2011-05-23 | 2011-05-23 | Temperature measurement device for overhead power transmission line |
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| CN2011101333126A CN102289924B (en) | 2011-05-23 | 2011-05-23 | Temperature measurement device for overhead power transmission line |
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| CN102289924B true CN102289924B (en) | 2013-01-30 |
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| CN102595091A (en) * | 2012-03-20 | 2012-07-18 | 深圳市鼎盛威电子有限公司 | Transmission system and transmission method for serial digital interface (SDI) high-definition video signals |
| CN108593142B (en) * | 2018-06-29 | 2023-08-04 | 福州大学 | Integrated temperature measurement system and working method thereof |
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| DE102005015028B4 (en) * | 2005-03-31 | 2008-03-13 | Miele & Cie. Kg | Method for temperature measurement in a household appliance |
| CN101299701A (en) * | 2008-06-06 | 2008-11-05 | 中国电子科技集团公司第五十二研究所 | Wireless sensing network system for monitoring temperature of power transforming and transmitting system and implementing method thereof |
| CN201413201Y (en) * | 2009-04-07 | 2010-02-24 | 湖北亿立能科技有限公司 | Temperature and current measuring unit for high-voltage line |
| CN201540177U (en) * | 2009-06-09 | 2010-08-04 | 中国电力科学研究院 | Information acquisition device for power transmission line |
| CN201417182Y (en) * | 2009-06-19 | 2010-03-03 | 国网电力科学研究院武汉南瑞有限责任公司 | On-line monitoring device of ice coverage prewarning and dynamic capacity-increasing system of transmission lines |
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Effective date of registration: 20171123 Address after: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Co-patentee after: NARI Technology Development Co., Ltd. Patentee after: State Grid Electric Power Research Insititute Co-patentee after: State Grid Corporation of China Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Co-patentee before: Nanjing Nari Co., Ltd. Patentee before: State Grid Electric Power Research Insititute Co-patentee before: State Grid Corporation of China |
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