CN203278850U - Internet of Things terminal acquiring synchronous signals according to commercial power signals - Google Patents
Internet of Things terminal acquiring synchronous signals according to commercial power signals Download PDFInfo
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- CN203278850U CN203278850U CN 201320315747 CN201320315747U CN203278850U CN 203278850 U CN203278850 U CN 203278850U CN 201320315747 CN201320315747 CN 201320315747 CN 201320315747 U CN201320315747 U CN 201320315747U CN 203278850 U CN203278850 U CN 203278850U
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Abstract
The utility model discloses an Internet of Things terminal acquiring synchronous signals according to commercial power signals. The Internet of Things terminal comprises a transformer for acquiring commercial power; a bridge type rectifier connected with the transformer and used for full wave rectification; a zero-crossing detection module connected with the bridge type rectifier and used for converting pulsation signals into pulse signals; a clock chip used for timing; and a processor connected with the zero-crossing detection module and the clock chip and used for acquiring synchronous signals according to the pulse signals and time signals. The Internet of Things terminal overcomes the defects in the prior art which is characterized by acquiring a clock chip through a GPS. The Internet of Things terminal has a low cost and is suitably used indoors where GPS signals are inaccessible. Meanwhile, as long as commercial power signals (i.e. power frequency signals) are accessed, each Internet of Things terminal is enabled to achieve time synchronization. Unified and effective processing and analyzing on data acquired by each Internet of Things terminal can be further achieved.
Description
Technical field
The utility model relates to a kind of internet-of-things terminal, is specifically related to a kind of internet-of-things terminal according to civil power signal acquisition synchronizing signal.
Technical background
At present, technology of Internet of things uses increasingly extensive, ripe in people's daily life, Internet of Things refers to by various internet-of-things terminals (infrared sensor, laser scanner and gas sensor etc.), according to certain agreement, article and Internet of Things are coupled together, carry out information exchange and communication, to realize a kind of network of intelligent identification, location, tracking, monitoring and management.The various information such as internet-of-things terminal collection sound, light, heat, and above-mentioned information is sent to central processing platform carries out data analysis, processing and processing.
the clock of existing each internet-of-things terminal is mutually independently, there is no unified fiducial time, thereby the clock of each internet-of-things terminal is asynchronous, the Time Inconsistency of internet-of-things terminal Information Monitoring, be not easy to internet-of-things terminal is unified to control, and the temporal information that comprises due to the signal of sensor terminal collection not at one time on, thereby the data of each internet-of-things terminal collection can't be done unified effectively the processing and analysis, prior art is obtained satellite synchronizing clock by GPS, but its cost compare is high, especially indoor, the situation of GPS can appear receiving.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of internet-of-things terminal according to civil power signal acquisition synchronizing signal, and it has solved the technical problem in the asynchronism(-nization) step of Internet of Things network.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of internet-of-things terminal according to civil power signal acquisition synchronizing signal, comprise: the transformer that is used for gathering civil power, the bridge rectifier that is used for full-wave rectification that is connected with transformer, the zero passage detection module that is used for fluctuating signal is become pulse signal that is connected with this bridge rectifier is for the clock chip of timing; The processor that is used for obtaining according to pulse signal, time signal synchronizing signal that is connected with described zero passage detection module, clock chip.
Further, described zero passage detection module comprises the first resistance, operational amplifier, the second resistance, the 3rd resistance, bi-directional voltage stabilizing pipe, the other end of this first resistance is connected with operational amplifier, the end of oppisite phase of this operational amplifier is connected with an end of the second resistance, the other end ground connection of this second resistance, the output of this operational amplifier is connected with an end of the 3rd resistance, and the other end of the 3rd resistance is connected with the bi-directional voltage stabilizing pipe.
The utlity model has following good effect: (1) the utility model has overcome prior art and has obtained the defective of clock chip by GPS, and cost is low, is adapted at indoorly using during without gps signal; (2) as long as access city's signal of telecommunication, namely power frequency component just can make each internet-of-things terminal realize time synchronized, with realization, the data of each internet-of-things terminal collection is unified effectively process and analyze.
Description of drawings
Fig. 1 is that the utility model is according to the theory diagram of the internet-of-things terminal of civil power signal acquisition synchronizing signal.
Fig. 2 is the structured flowchart of the zero passage detection module in the utility model.
Embodiment
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model according to specific embodiment also by reference to the accompanying drawings.
As shown in Figure 1, the utility model comprises according to the internet-of-things terminal of civil power signal acquisition synchronizing signal: the transformer that is used for gathering civil power, the bridge rectifier that is used for full-wave rectification that is connected with transformer, the zero passage detection module that is used for fluctuating signal is become pulse signal that is connected with this bridge rectifier is for the clock chip of timing; The processor that is used for obtaining according to pulse signal, time signal synchronizing signal that is connected with described zero passage detection module, clock chip.Transformer, bridge rectifier, zero passage detection module, clock chip, processor are all the products that city's field energy buys, such as bridge rectifier can adopt the bridge heap, for example KBPC3510 cake core, GBJ2510 cake core consist of, and also can consist of by four rectifier diodes; Described clock chip can adopt PCF8563 cake core or DS12B887 cake core; Described processor can adopt the c51 series monolithic, if computing is comparatively complicated, also can adopt S3C2440 type ARM chip.
The described city signal of telecommunication is also power-frequency voltage, is the alternating current of 220V, 50HZ, and its frequency is stable, after transformer, bridge rectifier, zero passage detection module, becomes the pulse signal of a 100HZ; Each pulse signal that its each internet-of-things terminal obtains is synchronous, and matches with described clock chip, with the automatic calibration respective synchronization time, the data of each internet-of-things terminal collection is unified effectively process and analyze.
As shown in Figure 2, described zero passage detection module comprises the first resistance R 1, operational amplifier, the second resistance R 2, the 3rd resistance R 3, bi-directional voltage stabilizing pipe D, described fluctuating signal enters from a termination of the first resistance R 1, the other end of this first resistance R 1 is connected with operational amplifier, the end of oppisite phase of this operational amplifier is connected with an end of the second resistance R 2, the other end ground connection of this second resistance R 2, the output of this operational amplifier is connected with an end of the 3rd resistance R 3, the other end of the 3rd resistance R 3 is connected with bi-directional voltage stabilizing pipe D, and exports described pulse signal.
Obviously, above-described embodiment is only for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among protection range of the present utility model.
Claims (2)
1. internet-of-things terminal according to civil power signal acquisition synchronizing signal, it is characterized in that, it comprises: the transformer that is used for gathering civil power, the bridge rectifier that is used for full-wave rectification that is connected with transformer, the zero passage detection module that is used for fluctuating signal is become pulse signal that is connected with this bridge rectifier is for the clock chip of timing; The processor that is used for obtaining according to pulse signal, time signal synchronizing signal that is connected with described zero passage detection module, clock chip.
2. the internet-of-things terminal according to civil power signal acquisition synchronizing signal according to claim 1, it is characterized in that, described zero passage detection module comprises the first resistance, operational amplifier, the second resistance, the 3rd resistance, bi-directional voltage stabilizing pipe, the other end of this first resistance is connected with operational amplifier, the end of oppisite phase of this operational amplifier is connected with an end of the second resistance, the other end ground connection of this second resistance, the output of this operational amplifier is connected with an end of the 3rd resistance, and the other end of the 3rd resistance is connected with the bi-directional voltage stabilizing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315747 CN203278850U (en) | 2013-05-31 | 2013-05-31 | Internet of Things terminal acquiring synchronous signals according to commercial power signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315747 CN203278850U (en) | 2013-05-31 | 2013-05-31 | Internet of Things terminal acquiring synchronous signals according to commercial power signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278850U true CN203278850U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320315747 Expired - Fee Related CN203278850U (en) | 2013-05-31 | 2013-05-31 | Internet of Things terminal acquiring synchronous signals according to commercial power signals |
Country Status (1)
| Country | Link |
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| CN (1) | CN203278850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658675A (en) * | 2016-09-22 | 2017-05-10 | 深圳市有方科技股份有限公司 | Synchronous clock signal acquisition device, synchronous clock signal acquisition method and wireless communication system |
| CN108508259A (en) * | 2018-03-08 | 2018-09-07 | 上海广为美线电源电器有限公司 | Electric main synchronization signal detection circuit |
-
2013
- 2013-05-31 CN CN 201320315747 patent/CN203278850U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658675A (en) * | 2016-09-22 | 2017-05-10 | 深圳市有方科技股份有限公司 | Synchronous clock signal acquisition device, synchronous clock signal acquisition method and wireless communication system |
| CN108508259A (en) * | 2018-03-08 | 2018-09-07 | 上海广为美线电源电器有限公司 | Electric main synchronization signal detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |