CN103731131A - Network connection status pin circuit - Google Patents
Network connection status pin circuit Download PDFInfo
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- CN103731131A CN103731131A CN201210388079.0A CN201210388079A CN103731131A CN 103731131 A CN103731131 A CN 103731131A CN 201210388079 A CN201210388079 A CN 201210388079A CN 103731131 A CN103731131 A CN 103731131A
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Abstract
The invention discloses a network connection status pin circuit. The network connection status pin circuit comprises an NPN triode, an LED, an EM310 GSM, data terminal equipment DTE, a backup lithium battery VBAT, a resistor R and a resistor R1. The NPN triode has three electrodes which are the base electrode B, the collector electrode C and the emitting electrode E. The base electrode B is connected with the resistor R. The collector electrode C is connected with the LED. The emitting electrode E is grounded. The resistor R1 is connected with the LED and the backup lithium battery VBAT simultaneously. The EM310 GSM is connected with the resistor R and the corresponding port of the data terminal equipment DTE. Through the network connection status pin circuit, the current status of a network can be known timely and observed more conveniently.
Description
Technical field
The present invention relates to pin circuit, be specifically related to network connection state pin circuit.
Background technology
The system that GPS global positioning system can be located in real time in the world, be navigated, can provide vehicle location, antitheft, anti-misfortune, travel route monitoring and call out the functions such as commander.And the realization of these functions is to realize by ten hundreds of circuit units is set on circuit unit plate, this just need to improve the circuit level of GPS global positioning system as much as possible, so it is well-designed that each on-chip pin needs to carry out, some function pin wherein also will be forced to give up, but in order to realize designing requirement, designer has to find out other the next equivalent pin that is forced to give up of method, thereby will make circuit design become complicated, realize speech business, short message service, global location and other supplementary service.Realizing these functions needs the circuit of GPS global positioning system constantly to switch, realize different network states, corresponding circuit is not but set in existing technology and realizes the different network state of simple judgement, this just causes great inconvenience to actual use, is unfavorable for the current state of observation and timely awareness network.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and network connection state pin circuit is provided, and has solved in prior art the current state of awareness network in time, is unfavorable for the defect of observing.
For solving above-mentioned technical problem, the present invention is by the following technical solutions: a kind of network connection state pin circuit, comprise NPN triode, light-emitting diode, EM310 GSM, data terminal equipment DTE, standby lithium battery VBAT and resistance R and R1, described NPN triode is divided into three utmost points, be respectively base stage B, collector electrode C and emitter E, base stage B is connected with resistance R, collector electrode C is connected with light-emitting diode, emitter E ground connection, described resistance R 1 is connected in light-emitting diode and standby lithium battery VBAT simultaneously, described EM310 GSM is connected with the corresponding ports of resistance R and data terminal equipment DTE.
Above-mentioned resistance R is connected with the LPG pin on EM310 GSM.
Module data receiving port/TXD, request transmit port/RTS and data terminal ready port/DTR on above-mentioned EM310 GSM are the data that receive the corresponding ports on data terminal equipment DTE.
Data sending terminal mouth/RXD, clear to send port/CTS, the ready port/DSR of data equipment, carrier detect port/DCD and module ring indication port/RING on above-mentioned EM310 GSM sends data to the corresponding ports of data terminal equipment DTE.
When module starts, module starts output high level.When module is during in deep sleep, LPG pin is with regard to output low level.When not inserting SIM card, for input PIN code or just when the search network, LPG pin will be made corresponding response, and the cycle is 1s, and output high level 0.1s, is then reacted on light-emitting diode.When being registered to network, IDLE state, the LPG pin cycle becomes 3s, high level output 0.1s.When in GPRS transfer of data, the cycle becomes 0.125s, output high level 0.1s.When in calling, LPG pin continues high level.
Compared with prior art, the invention has the beneficial effects as follows: by said structure, when network state is different, LPG pin just there will be different low and high level states, then passes to light-emitting diode, by the variation of light source, significantly find out, can realize and observe at any time network state.
Accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention is further elaborated, and embodiments of the invention are not limited to this.
Embodiment:
The present invention includes NPN triode, light-emitting diode, EM310 GSM, data terminal equipment DTE, standby lithium battery VBAT and resistance R and R1, described NPN triode is divided into three utmost points, be respectively base stage B, collector electrode C and emitter E, base stage B is connected with resistance R, collector electrode C is connected with light-emitting diode, emitter E ground connection, described resistance R 1 is connected in light-emitting diode and standby lithium battery VBAT simultaneously, described EM310 GSM is connected with the corresponding ports of resistance R and data terminal equipment DTE, and resistance R is connected with the LPG pin on EM310 GSM.Module data receiving port/TXD, request transmit port/RTS and data terminal ready port/DTR on the EM310 GSM of the present embodiment are the data that receive the corresponding ports on data terminal equipment DTE; Other port data transmit port/RXD, clear to send port/CTS, the ready port/DSR of data equipment, carrier detect port/DCD and module ring indication port/RING on EM310 GSM sends data to the corresponding ports of data terminal equipment DTE.
During application, only the corresponding ports LPG pin of this circuit need be connected on EM310 GSM, resistance R 1 is connected on standby lithium battery VBAT.Observe the variations in light situation of light-emitting diode, just can know corresponding network state.
Just can realize as mentioned above this invention.
Claims (4)
1. a network connection state pin circuit, it is characterized in that: comprise NPN triode, light-emitting diode, EM310 GSM, data terminal equipment DTE, standby lithium battery VBAT and resistance R and R1, described NPN triode is divided into three utmost points, be respectively base stage B, collector electrode C and emitter E, base stage B is connected with resistance R, collector electrode C is connected with light-emitting diode, emitter E ground connection, described resistance R 1 is connected in light-emitting diode and standby lithium battery VBAT simultaneously, and described EM310 GSM is connected with the corresponding ports of resistance R and data terminal equipment DTE.
2. network connection state pin circuit according to claim 1, is characterized in that: described resistance R is connected with the LPG pin on EM310 GSM.
3. network connection state pin circuit according to claim 1, is characterized in that: module data receiving port/TXD, request transmit port/RTS and data terminal ready port/DTR on described EM310 GSM are the data that receive the corresponding ports on data terminal equipment DTE.
4. according to the network connection state pin circuit described in claim 1 or 3, it is characterized in that: data sending terminal mouth/RXD, clear to send port/CTS, the ready port/DSR of data equipment, carrier detect port/DCD and the module ring indication port/RING on described EM310 GSM sends data to the corresponding ports of data terminal equipment DTE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388079.0A CN103731131A (en) | 2012-10-15 | 2012-10-15 | Network connection status pin circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388079.0A CN103731131A (en) | 2012-10-15 | 2012-10-15 | Network connection status pin circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103731131A true CN103731131A (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210388079.0A Pending CN103731131A (en) | 2012-10-15 | 2012-10-15 | Network connection status pin circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103731131A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5126588A (en) * | 1987-03-16 | 1992-06-30 | Sgs-Thomson Microelectronics Gmbh | Digital push-pull driver circuit |
| JPH0667772A (en) * | 1992-08-14 | 1994-03-11 | Ricoh Co Ltd | Data transmission equipment |
| CN102638732A (en) * | 2012-03-12 | 2012-08-15 | 南平隆飞达日用品有限公司 | Building intercom system with resident cellphone used for intercommunicating with visitors and opening gate at stairs |
| CN202841093U (en) * | 2012-10-15 | 2013-03-27 | 成都众易通科技有限公司 | Base pin circuit for network connection status |
-
2012
- 2012-10-15 CN CN201210388079.0A patent/CN103731131A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5126588A (en) * | 1987-03-16 | 1992-06-30 | Sgs-Thomson Microelectronics Gmbh | Digital push-pull driver circuit |
| JPH0667772A (en) * | 1992-08-14 | 1994-03-11 | Ricoh Co Ltd | Data transmission equipment |
| CN102638732A (en) * | 2012-03-12 | 2012-08-15 | 南平隆飞达日用品有限公司 | Building intercom system with resident cellphone used for intercommunicating with visitors and opening gate at stairs |
| CN202841093U (en) * | 2012-10-15 | 2013-03-27 | 成都众易通科技有限公司 | Base pin circuit for network connection status |
Non-Patent Citations (1)
| Title |
|---|
| 刘成岩等: "EM310无线模块与PIC单片机的接口设计", 《单片机与嵌入式系统应用》, 30 September 2011 (2011-09-30) * |
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Application publication date: 20140416 |