CN203590239U - Wireless data monitoring equipment with ultra-low power consumption - Google Patents
Wireless data monitoring equipment with ultra-low power consumption Download PDFInfo
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- CN203590239U CN203590239U CN201320774616.5U CN201320774616U CN203590239U CN 203590239 U CN203590239 U CN 203590239U CN 201320774616 U CN201320774616 U CN 201320774616U CN 203590239 U CN203590239 U CN 203590239U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model relates to wireless data monitoring equipment with ultra-low power consumption. The wireless data monitoring equipment comprises a wireless signal detection circuit, a radio frequency transceiver circuit, a wireless transceiver IC, a main control CUP and a battery power supply system. An output end of the radio frequency transceiver circuit is connected with an input end of the wireless signal detection circuit. An output end of the wireless signal detection circuit is connected with an input end of the main control CPU. An input and output end of the main control CPU is connected with an input and output end of the wireless transceiver IC. An input and output end of the wireless transceiver IC is connected with an input and output end of the radio frequency transceiver circuit. The battery power supply system powers the above modules. The wireless signal detection circuit comprises a signal receiving unit, a filtering unit, a signal amplification unit and a signal transmission unit which are electrically connected in order.
Description
Technical field
The utility model relates to the data acquisition unit in power line failure monitoring system, is specifically related to a kind of wireless data monitoring equipment of super low-power consumption.
Background technology
Power line failure monitoring system is comprised of several parts such as fault detector, data acquisition unit, centralized manager, data centers.Fault detector is mounted in the intelligent sensor with radio communication on power line, the functions such as band signal collection, Physical Quantity Calculation, wireless telecommunications, automatic electricity getting.As faults such as circuit generation overcurrent, overload, broken strings, just fault message is sent on data acquisition unit by wireless mode.Data acquisition unit is arranged on electric pole, by wireless mode, carries out automatic network-building, each data acquisition unit in network all can routing forwarding the data that send of other data acquisition unit, finally send in a centralized manager unique in whole network.Centralized manager receives the information that data acquisition unit sends, and to carrying out, after data processing, by modes such as GPRS/GSM/CDMA/3G, sends to data center.
Wherein, existing data acquisition unit generally comprises radio-frequency (RF) transmit-receive circuit, the modular circuits such as wireless receiving and dispatching IC, master cpu, in order to guarantee wireless data, can not lose, need to make wireless receiving and dispatching IC always in waiting for receiving mode, cause operating current to reduce, thereby cause equipment power dissipation high, although also there is equipment to adopt the solution of periodic duty, the power consumption of equipment own is decreased, but real-time is also had a greatly reduced quality, caused the power consumption of data receiver greatly to increase simultaneously, equal to make power consumption to shift.Not from dealing with problems in essence.So most of same category of device still adopts the scheme of solar panel+solar control+rechargeable battery, solve the problem of continuous working period.And then cause the data acquisition unit in existing line fault monitoring system to have following problem:
1. apparatus expensive.In using the data acquisition unit of solar panel, the price of solar panel and the controller for solar that matches has accounted for the more than 70% of whole device hardware cost.Cause manufacturing cost expensive, be unfavorable for the promotion and application of product;
2. volume is heavy.Use solar panel, need to use the fixture of metal structure to be fixed it, also will use controller for solar, rechargeable battery is protected, make whole equipment weigh tens of jin, be unfavorable for installing and transportation;
3. installation personnel requires high.Solar panel is by absorbing sunlight, directly or indirectly converting solar radiant energy to electric energy by photoelectric effect or Photochemical effects, by controller for solar, by power storage in rechargeable battery.Because different territory of uses longitude and latitude is different, sunlight is also different at Various Seasonal irradiating angle, so all need be according to the concrete condition that makes land used when installing, adjust the angle of solar panel, the hours of daylight that can accept more to grow and better incident angle, improve the conversion efficiency of solar panel.Higher to the specification requirement of installation personnel like this, need professional domain knowledge, equipment is carried out to installment and debugging, the operation that whether rationally directly has influence on whole system is installed;
4. difficult in maintenance and expensive.Solar panel is arranged on open air for a long time, be full of dust storm, floating ash, and environmental pollution is now more serious, is substantially all putty, and these impurity stop that cell panel absorbs sunlight, reduces the operating efficiency of cell panel.If do not cleaned in time, solar panel not only weakens gradually to the absorption of solar energy, also easily produces part and burns out, thereby affect system works.So will regularly clean, keep a public place clean.Because data acquisition unit is arranged on field and high-altitude, cleaning up bothers very much, needs a large amount of manpower and materials.So just cause the maintenance cost in later stage expensive;
Affected by amblent air temperature larger.Solar panel is subject to the impact of solar light irradiation, and same area is in the difference of summer and hours of daylight in winter and intensity of sunshine, just cause same equipment winter and summer continuous working period all different.A rainy weather that area is continuous is subject to the impact of weather, if will cause system to quit work because not charging simultaneously.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of ultra-low power consumption wireless data monitoring equipment, its internal circuit is improved, the operating time of equipment is extended greatly, success saves solar charging panel and the intelligent control device that matches thereof, and has avoided the series of problems causing due to employing solar recharging scheme in same category of device, thereby solves the deficiency of prior art.
In order to solve the problems of the technologies described above, thinking of the present utility model is that consideration data acquisition unit, works long hours it.In data acquisition unit mainly by modular circuits such as radio-frequency (RF) transmit-receive circuit, wireless receiving and dispatching IC, master cpus.In order to guarantee to receive in real time the fault message that fault detector sends over, master cpu can be operated in low-power consumption mode, but must will guarantee that radio-frequency (RF) receiving circuit and wireless receiving and dispatching IC are in accepting state, otherwise will make loss of data.The operating current of the wireless receiving and dispatching IC of lowest power consumption under accepting state also reached 15mA now, if there is no data communication, also allows it wait for receive data,, concerning the extremely responsive battery power supply system of power consumption, is obviously great waste.Existing data acquisition unit, by powered battery, due to reasons such as battery capacity, system power dissipations, can not make data acquisition unit work long hours.In order to address this problem, the general solar panel that adopts charges to chargeable lead acid accumulator or lithium battery, although extended the operating time of data acquisition unit, but a series of other problems have also been drawn, as manufacture and maintenance cost, equipment is heavy, mounting process is complicated, be subject to that amblent air temperature affects etc., practical function is had a greatly reduced quality.The utility model, from adopting the wireless signal testing circuit of unique reduction power consumption, has reduced the power consumption of data acquisition unit, uses the disposable lithium cell of 12AH, can use continuously more than 5 years.Do not re-use solar charging panel, avoided the series of problems that uses solar charging panel to cause.
Concrete, ultra-low power consumption wireless data monitoring equipment of the present utility model, comprise wireless signal testing circuit, radio-frequency (RF) transmit-receive circuit, wireless receiving and dispatching IC, master cpu and battery power supply system, the output of described radio-frequency (RF) transmit-receive circuit is connected to the input of wireless signal testing circuit, the output of wireless signal testing circuit is connected to the input of master cpu, the input and output of master cpu are terminated at the input/output terminal of wireless receiving and dispatching IC, the input and output of wireless receiving and dispatching IC are terminated at the input/output terminal of radio-frequency (RF) transmit-receive circuit, and battery power supply system is above-mentioned each module for power supply.
Wherein, radio-frequency (RF) transmit-receive circuit: while receiving data, receive wireless signal, be transferred to wireless receiving and dispatching IC and wireless signal testing circuit; While sending data, by the signal after wireless receiving and dispatching IC processing, be converted to the radio wave of assigned frequency.
The analog signal of wireless signal testing circuit to radio-frequency (RF) transmit-receive circuit, detects, and according to testing result, master cpu is carried out to pattern switching or directly abandons.
Master cpu is controlled the operation of whole system, controls wireless receiving and dispatching IC and carries out pattern switching.After being waken up by wireless signal testing circuit, wireless receiving and dispatching IC is switched to receiving mode, after waiting for that wireless receiving and dispatching IC data receiver completes, data is read; While sending data, wireless receiving and dispatching IC is switched to sending mode, data to be sent are transferred to wireless receiving and dispatching IC by serial line interface.The voltage that battery power supply system is provided detects.
Wireless receiving and dispatching IC: control its state by master cpu, during receiving mode, radio-frequency (RF) transmit-receive circuit is received to wireless signal, process, and deposit buffer memory own in; While sending data, the data that master cpu is sended over, modulate transmission.
Battery power supply system, for whole system provides operation energy consumption.
Further, described wireless signal testing circuit comprises signal receiving unit, filter unit, signal amplification unit and signal transmitting unit, and signal receiving unit, filter unit, signal amplification unit and signal transmitting unit are electrically connected in turn.
Wherein, described signal receiving unit comprises antenna chip IR1.Described filter unit comprises capacitor C 5, capacitor C 8, capacitor C 2 and inductance L 1, one end of capacitor C 5 connects the signal input part of antenna chip IR1 and one end of inductance L 1, one end ground connection of the other end of capacitor C 5, the earth terminal of antenna chip IR1 and capacitor C 8, the other end of inductance L 1 connects the other end of capacitor C 8 and one end of capacitor C 2, and the other end of capacitor C 2 connects signal amplification unit.
Further, described signal amplification unit comprises resistance R 3, resistance R 4, resistance R 6, resistance R 8, resistance R 10, capacitor C 1, capacitor C 3, capacitor C 9 and amplifier U2, one end of resistance R 4 connects filter unit, the other end of resistance R 4 connects one end of capacitor C 1, one end of one end of capacitor C 3 and resistance R 6, the other end ground connection of resistance R 6, one end of other end contact resistance R3 of capacitor C 1 and the output of amplifier U2, the other end of other end contact resistance R3 of capacitor C 3 and the inverting input of amplifier U2, the in-phase input end of amplifier U2 connects one end of capacitor C 9, one end of one end of resistance R 10 and resistance R 8, the other end of resistance R 8 connects power supply VCC, the other end ground connection of the other end of capacitor C 9 and resistance R 10.
Further, described signal transmitting unit comprises capacitor C 4, resistance R 1, resistance R 2, resistance R 5, resistance R 7, resistance R 9, capacitor C 4, capacitor C 6, capacitor C 7, triode VT1, triode VT2 and pulse modulation chip U1, pulse modulation chip U1 realizes bandpass filtering and pulse-width modulation, be responsible for waveform signal to change level translation into, one end of capacitor C 4 is connected the output of amplifier U2 with one end of resistance R 9, one end of other end contact resistance R7 of capacitor C 4 and the base stage of triode VT1, the grounded emitter of the other end of resistance R 7 and triode VT1, the collector electrode of triode VT1 connects the 2nd pin of pulse modulation chip U1 and one end of resistance R 2, one end of the other end contact resistance R1 of resistance R 2, the 8th pin of pulse modulation chip U1, the 4th pin and the power supply VCC of pulse modulation chip U1, the other end of the 6th pin contact resistance R1 of pulse modulation chip U1, ground connection after the 7th pin series capacitance C6 of pulse modulation chip U1, the 1st pin ground connection of pulse modulation chip U1, ground connection after the 5th pin series capacitance C7 of pulse modulation chip U1, the base stage of connecting triode VT2 after the 3rd pin series resistance R5 of pulse modulation chip U1, the grounded emitter of triode VT2, the other end of the collector electrode contact resistance R9 of triode VT2, and as this signal transmitting unit output.
Wherein, in order to improve detection sensitivity more and accuracy, described wireless signal testing circuit PCB fabric swatch together with wireless radio frequency circuit.According to different wireless frequencies, adjust the corresponding parameter of testing circuit.
The utility model is the circuit structure that adopts unique reduction power consumption in power line failure monitoring system, solved the power problems making in battery-powered data acquisition equipment, the manufacturing cost of whole equipment is reduced, volume reduces, difficulty of construction reduces, non-maintaining, not affected by amblent air temperature etc.The utility model, by improving wireless signal testing circuit, has reduced power consumption, and then extends service time of battery, thereby avoids using solar panel in same category of device and the series of problems of drawing.Compared with prior art, this practicality tool has the following advantages:
1. low cost of manufacture.Use the data acquisition unit of the utility model design, can save in same category of device, the solar panel increasing in order to lengthen working hours and supporting control appliance thereof, reduce its manufacturing cost greatly.Be beneficial to the promotion and application of product;
2. volume is light and handy, compact.Whole equipment is owing to saving the solar collecting device using in same category of device, thereby volume is dwindled greatly.Be convenient to install and transportation;
3. install simple.To installation personnel, without specific (special) requirements, only need to carry out simple fixing to equipment, without debugging, wiring etc.;
4. non-maintaining.Follow-up maintenance cost is almost nil, even if go wrong, only need to provide for simple replacement of and can complete;
Not affected by amblent air temperature.Work in round-the-clock 24 hours, is not affected by any environment, geographic factor.
Accompanying drawing explanation
Fig. 1 is the system block diagram of ultra-low power consumption wireless data monitoring equipment of the present utility model;
Fig. 2 is the circuit theory diagrams of the wireless signal testing circuit of embodiment of the present utility model.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
Of the present utility model being mainly used in (other several parts, generally by external power source, do not need to consider the problem of power consumption) on data acquisition unit.Data acquisition unit, by powered battery, due to reasons such as battery capacity, system power dissipations, can not make data acquisition unit work long hours.In order to address this problem, the general solar panel that adopts charges to chargeable lead acid accumulator or lithium battery, although extended the operating time of data acquisition unit, but a series of other problems have also been drawn, as manufacture and maintenance cost, equipment is heavy, mounting process is complicated, be subject to that amblent air temperature affects etc., practical function is had a greatly reduced quality.The utility model, from adopting the wireless signal testing circuit of unique reduction power consumption, has reduced the power consumption of data acquisition unit, uses the disposable lithium cell of 12AH, can use continuously more than 5 years.Do not re-use solar charging panel, avoided the series of problems that uses solar charging panel to cause.
Concrete, ultra-low power consumption wireless data monitoring equipment of the present utility model, comprise wireless signal testing circuit, radio-frequency (RF) transmit-receive circuit, wireless receiving and dispatching IC, master cpu and battery power supply system, the output of described radio-frequency (RF) transmit-receive circuit is connected to the input of wireless signal testing circuit, the output of wireless signal testing circuit is connected to the input of master cpu, the input and output of master cpu are terminated at the input/output terminal of wireless receiving and dispatching IC, the input and output of wireless receiving and dispatching IC are terminated at the input/output terminal of radio-frequency (RF) transmit-receive circuit, and battery power supply system is above-mentioned each module for power supply.
Wherein, the wireless signal of propagating in radio-frequency (RF) transmit-receive circuit admission of air, filters out the wireless signal of other frequency range, the wireless signal of same frequency range is carried out to the processing such as integration, filtering, amplification.Signal after processing is transferred to wireless receiving and dispatching IC.
Wireless signal testing circuit, wireless signal after radio-frequency (RF) transmit-receive circuit is received and processed carries out demodulation, and amplification, sample conversion are digital signal, if useful signal, wake use interrupt mode up master cpu, make it from low-power consumption mode, be switched to activity pattern.
Master cpu receives the interrupt signal that wireless signal testing circuit sends over, and from low-power consumption mode, is switched to activity pattern, opens wireless receiving and dispatching IC, makes it in accepting state.Wait for that wireless receiving and dispatching IC receives after data, send interrupt signal to master cpu, now master cpu sends reading order, reads the wireless data receiving.Then carry out Data Analysis; If need to send data, wireless receiving and dispatching IC is switched to sending mode, by serial mode, send data to wireless receiving and dispatching IC, by wireless receiving and dispatching IC, by radio-frequency (RF) transmit-receive circuit, data are sent by radio wave.
When wireless receiving and dispatching IC is switched to receiving mode by master cpu, the wireless signal that radio-frequency (RF) transmit-receive circuit is sended over, carries out, after the steps such as demodulation, amplification, sampling, being converted to digital signal, and store data in internal memory, notice master cpu reads data; While being switched to sending mode by master cpu, the data that master cpu is sended over, are converted to analog signal, carry out, after the processing such as filtering, frequency multiplication, modulation, by radio-frequency (RF) transmit-receive circuit, being converted to radio wave, carry out transfer of data.
Battery power supply system provides operation energy consumption for whole system.And have the voltage that master cpu provides it to detect, if lower than warning value, will send warning message
Wherein, described wireless signal testing circuit comprises signal receiving unit, filter unit, signal amplification unit and signal transmitting unit, and signal receiving unit, filter unit, signal amplification unit and signal transmitting unit are electrically connected in turn.
As a concrete example, described signal receiving unit comprises antenna chip IR1(antenna pedestal).Described filter unit comprises capacitor C 5, capacitor C 8, capacitor C 2 and inductance L 1, one end of capacitor C 5 connects the signal input part of antenna chip IR1 and one end of inductance L 1, one end ground connection of the other end of capacitor C 5, the earth terminal of antenna chip IR1 and capacitor C 8, the other end of inductance L 1 connects the other end of capacitor C 8 and one end of capacitor C 2, and the other end of capacitor C 2 connects signal amplification unit.Described signal amplification unit comprises resistance R 3, resistance R 4, resistance R 6, resistance R 8, resistance R 10, capacitor C 1, capacitor C 3, capacitor C 9 and amplifier U2, one end of resistance R 4 connects filter unit, the other end of resistance R 4 connects one end of capacitor C 1, one end of one end of capacitor C 3 and resistance R 6, the other end ground connection of resistance R 6, one end of other end contact resistance R3 of capacitor C 1 and the output of amplifier U2, the other end of other end contact resistance R3 of capacitor C 3 and the inverting input of amplifier U2, the in-phase input end of amplifier U2 connects one end of capacitor C 9, one end of one end of resistance R 10 and resistance R 8, the other end of resistance R 8 connects power supply VCC, the other end ground connection of the other end of capacitor C 9 and resistance R 10.Described signal transmitting unit comprises capacitor C 4, resistance R 1, resistance R 2, resistance R 5, resistance R 7, resistance R 9, capacitor C 4, capacitor C 6, capacitor C 7, triode VT1, triode VT2 and pulse modulation chip U1, pulse modulation chip U1 realizes bandpass filtering and pulse-width modulation, is responsible for waveform signal to change level translation into, one end of capacitor C 4 is connected the output of amplifier U2 with one end of resistance R 9, one end of other end contact resistance R7 of capacitor C 4 and the base stage of triode VT1, the grounded emitter of the other end of resistance R 7 and triode VT1, the collector electrode of triode VT1 connects the 2nd pin of pulse modulation chip U1 and one end of resistance R 2, one end of the other end contact resistance R1 of resistance R 2, the 8th pin of pulse modulation chip U1, the 4th pin and the power supply VCC of pulse modulation chip U1, the other end of the 6th pin contact resistance R1 of pulse modulation chip U1, ground connection after the 7th pin series capacitance C6 of pulse modulation chip U1, the 1st pin ground connection of pulse modulation chip U1, ground connection after the 5th pin series capacitance C7 of pulse modulation chip U1, the base stage of connecting triode VT2 after the 3rd pin series resistance R5 of pulse modulation chip U1, the grounded emitter of triode VT2, the other end of the collector electrode contact resistance R9 of triode VT2, and as this signal transmitting unit output.
The utility model is the circuit structure that adopts unique reduction power consumption in power line failure monitoring system, solved the power problems making in battery-powered data acquisition equipment, the manufacturing cost of whole equipment is reduced, volume reduces, difficulty of construction reduces, non-maintaining, not affected by amblent air temperature etc.
In order to guarantee to receive in real time the fault message that fault detector sends over, master cpu can be operated in low-power consumption mode, but must will guarantee that radio-frequency (RF) receiving circuit and wireless receiving and dispatching IC are in accepting state, otherwise will make loss of data.The operating current of the wireless receiving and dispatching IC of lowest power consumption under accepting state also reached 15mA now, if there is no data communication, also allows it wait for receive data,, concerning the extremely responsive battery power supply system of power consumption, is obviously great waste.The utility model adopts unique testing circuit, radiofrequency signal to radio-frequency (RF) transmit-receive circuit part detects in real time, while data arrival not detected, can close wireless receiving and dispatching IC, and make master cpu enter park mode, in whole system, only have testing circuit to carry out work, now the electric current of whole system only has 20nA left and right.While detecting wireless data arrival, wake on wireless transmitting-receiving IC and master cpu, receive data; Effectively reduce whole system power consumption, greatly extended the service time of battery.Suppose to use the disposable lithium cell of 12AH, every 5 minutes, receive primary fault information, after data acquisition unit is processed fault message, then send it to centralized manager (centre may need through the transfer of other data acquisition unit and route), can guarantee that system works is more than 8 years.According to such power consumption, need not re-use solar panel and rechargeable battery completely.Just successfully avoided the series of problems that uses solar panel to cause.
Wherein, the utility model mainly improves wireless signal testing circuit.Wireless signal testing circuit is PCB fabric swatch together with wireless radio frequency circuit.According to different wireless frequencies, adjust the corresponding parameter of testing circuit, improve detection sensitivity more and accuracy.
In addition, circuit of the present utility model possesses versatility, can be applied to other battery powered Data Detection field.The utility model can be used in power consumption is required to other stricter field, as the wireless signal testing circuit in the utility model also can be used the fields such as gas meter/Water-flowmeter auto-recording.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection range of the present utility model.
Claims (5)
1. ultra-low power consumption wireless data monitoring equipment, it is characterized in that: comprise wireless signal testing circuit, radio-frequency (RF) transmit-receive circuit, wireless receiving and dispatching IC, master cpu and battery power supply system, the output of described radio-frequency (RF) transmit-receive circuit is connected to the input of wireless signal testing circuit, the output of wireless signal testing circuit is connected to the input of master cpu, the input and output of master cpu are terminated at the input/output terminal of wireless receiving and dispatching IC, the input and output of wireless receiving and dispatching IC are terminated at the input/output terminal of radio-frequency (RF) transmit-receive circuit, and battery power supply system is above-mentioned each module for power supply;
Described wireless signal testing circuit comprises signal receiving unit, filter unit, signal amplification unit and signal transmitting unit, and signal receiving unit, filter unit, signal amplification unit and signal transmitting unit are electrically connected in turn.
2. wireless data monitoring equipment according to claim 1, is characterized in that: described signal receiving unit comprises antenna chip IR1.
3. wireless data monitoring equipment according to claim 2, it is characterized in that: described filter unit comprises capacitor C 5, capacitor C 8, capacitor C 2 and inductance L 1, one end of capacitor C 5 connects the signal input part of antenna chip IR1 and one end of inductance L 1, one end ground connection of the other end of capacitor C 5, the earth terminal of antenna chip IR1 and capacitor C 8, the other end of inductance L 1 connects the other end of capacitor C 8 and one end of capacitor C 2, and the other end of capacitor C 2 connects signal amplification unit.
4. wireless data monitoring equipment according to claim 3, it is characterized in that: described signal amplification unit comprises resistance R 3, resistance R 4, resistance R 6, resistance R 8, resistance R 10, capacitor C 1, capacitor C 3, capacitor C 9 and amplifier U2, one end of resistance R 4 connects filter unit, the other end of resistance R 4 connects one end of capacitor C 1, one end of one end of capacitor C 3 and resistance R 6, the other end ground connection of resistance R 6, one end of other end contact resistance R3 of capacitor C 1 and the output of amplifier U2, the other end of other end contact resistance R3 of capacitor C 3 and the inverting input of amplifier U2, the in-phase input end of amplifier U2 connects one end of capacitor C 9, one end of one end of resistance R 10 and resistance R 8, the other end of resistance R 8 connects power supply VCC, the other end ground connection of the other end of capacitor C 9 and resistance R 10.
5. wireless data monitoring equipment according to claim 4, it is characterized in that: described signal transmitting unit comprises capacitor C 4, resistance R 1, resistance R 2, resistance R 5, resistance R 7, resistance R 9, capacitor C 4, capacitor C 6, capacitor C 7, triode VT1, triode VT2 and pulse modulation chip U1, one end of capacitor C 4 is connected the output of amplifier U2 with one end of resistance R 9, one end of other end contact resistance R7 of capacitor C 4 and the base stage of triode VT1, the grounded emitter of the other end of resistance R 7 and triode VT1, the collector electrode of triode VT1 connects the 2nd pin of pulse modulation chip U1 and one end of resistance R 2, one end of the other end contact resistance R1 of resistance R 2, the 8th pin of pulse modulation chip U1, the 4th pin and the power supply VCC of pulse modulation chip U1, the other end of the 6th pin contact resistance R1 of pulse modulation chip U1, ground connection after the 7th pin series capacitance C6 of pulse modulation chip U1, the 1st pin ground connection of pulse modulation chip U1, ground connection after the 5th pin series capacitance C7 of pulse modulation chip U1, the base stage of connecting triode VT2 after the 3rd pin series resistance R5 of pulse modulation chip U1, the grounded emitter of triode VT2, the other end of the collector electrode contact resistance R9 of triode VT2, and as this signal transmitting unit output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320774616.5U CN203590239U (en) | 2013-12-02 | 2013-12-02 | Wireless data monitoring equipment with ultra-low power consumption |
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| CN201320774616.5U CN203590239U (en) | 2013-12-02 | 2013-12-02 | Wireless data monitoring equipment with ultra-low power consumption |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370929A (en) * | 2016-08-23 | 2017-02-01 | 成都沃尔法特科技有限公司 | Radio frequency indicator signal identification method |
| CN106646125A (en) * | 2016-12-09 | 2017-05-10 | 云南电力试验研究院(集团)有限公司 | Low-power-consumption power distribution network fault monitoring terminal |
| CN110517472A (en) * | 2019-09-18 | 2019-11-29 | 湖南农业大学 | Optimised power consumption system based on electric power Internet of Things |
| CN113795045A (en) * | 2021-08-30 | 2021-12-14 | 云南电网有限责任公司 | Power transmission line communication equipment with low power consumption |
-
2013
- 2013-12-02 CN CN201320774616.5U patent/CN203590239U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370929A (en) * | 2016-08-23 | 2017-02-01 | 成都沃尔法特科技有限公司 | Radio frequency indicator signal identification method |
| CN106646125A (en) * | 2016-12-09 | 2017-05-10 | 云南电力试验研究院(集团)有限公司 | Low-power-consumption power distribution network fault monitoring terminal |
| CN110517472A (en) * | 2019-09-18 | 2019-11-29 | 湖南农业大学 | Optimised power consumption system based on electric power Internet of Things |
| CN110517472B (en) * | 2019-09-18 | 2024-03-22 | 湖南农业大学 | Power consumption optimization system based on electric power Internet of things |
| CN113795045A (en) * | 2021-08-30 | 2021-12-14 | 云南电网有限责任公司 | Power transmission line communication equipment with low power consumption |
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