CN203882311U - Data communication card with initialization carried out automatically - Google Patents
Data communication card with initialization carried out automatically Download PDFInfo
- Publication number
- CN203882311U CN203882311U CN201420247802.8U CN201420247802U CN203882311U CN 203882311 U CN203882311 U CN 203882311U CN 201420247802 U CN201420247802 U CN 201420247802U CN 203882311 U CN203882311 U CN 203882311U
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- Prior art keywords
- chip
- initialization
- communication
- pin terminal
- communication control
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- Expired - Lifetime
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- 238000004891 communication Methods 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000004913 activation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Calculators And Similar Devices (AREA)
Abstract
The utility model relates to a data communication card with initialization carried out automatically. The data communication card with the initialization carried out automatically comprises a communication control chip which is respectively connected with an interface chip, a serial communication chipset and a sim card interface chip, the interface chip is connected with the serial communication chipset, and a first pin terminal of the communication control chip is connected with a third pin terminal of an automatic initialization chip and receives initialization instructions sent by the automatic initialization chip. A 54 pin terminal, a 55 pin terminal and a 56 pin terminal of the communication control chip are connected with a four pin terminal of the automatic initialization chip and a third pin terminal of a power chip respectively. According to the data communication card with the initialization started automatically, initialization can be carried out automatically on the communication control chip, the function that detection of an electronic computer bus gives out active signals again is avoided, data exchange work load of the electronic computer with external equipment is reduced effectively, programming work of development and using staff is simplified, and working efficiency of the development and using staff is improved obviously.
Description
Technical field
The utility model relates to a kind of data communication card, and specifically one is carried out initialized data communication card automatically.
Background technology
As everyone knows, data communication card is the important device of robot calculator and external unit employing while carrying out exchanges data, object is, by data communication card, robot calculator bus and external unit are carried out to exchanges data at a high speed, improves the work efficiency of robot calculator and external unit.
In data communication card, adopting SIM900 chip is a kind of widely used method, and the data communication card of employing SIM900 chip need be by detecting its existence with robot calculator bus interface by robot calculator, provide activation signal to make to enter normal duty after its initialization, this method has increased the workload of robot calculator again.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of data communication that can make to adopt SIM900A chip to be stuck in the device that automatically carries out initial method after access robot calculator bus interface.
The technical scheme that the utility model adopted is for achieving the above object: one is carried out initialized data communication card automatically, comprise Communication Control chip U5 connecting interface chip U1, serial port communication chip group and sim card interface chip U4 respectively, described interface chip U1 connects serial port communication chip group, the 3rd terminals of the PORKEY pin terminals of described Communication Control chip U5 and auto-initiation chip U7 are connected, and receive the initialization command that auto-initiation chip U7 sends; The VBAT terminals of Communication Control chip U5 connect respectively the VDD terminals of auto-initiation chip U7 and the VDD terminals of power supply chip U6.
Described serial port communication chip group comprises interconnected first serial communication chip U2 and second serial communication chip U3, and wherein first serial communication chip U2 is connected with interface chip U1 and Communication Control chip U5.
The utlity model has following beneficial effect and advantage:
1. make full use of the performance of U7 (MAX811) auto-initiation chip, make U5 (SIM900A) Communication Control chip automatically carry out initialization, avoid the detection of robot calculator bus to send again the function of activation signal;
2. the utility model can effectively reduce robot calculator and external unit and carried out the workload of exchanges data, simplifies application personnel's program development job, significantly improves its work efficiency.
Brief description of the drawings
Fig. 1 is structure connection layout of the present utility model;
Fig. 2 is Communication Control chip of the present utility model and auto-initiation chip wiring diagram;
Fig. 3 is power supply chip figure of the present utility model;
Wherein, U1 is interface chip, and U2 is first serial communication chip, and U3 is second serial communication chip, and U4 is sim card interface chip, and U5 is Communication Control chip, and U6 is power supply chip, and U7 is auto-initiation chip.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Duty of the present invention is as follows:
As shown in Figure 1, this SIM900A is carried out to initialized data communication card automatically and be arranged in the robot calculator bus interface of use, external equipment is connected with its external-connected port.
1 pin terminals (PORKEY) of U5 (SIM900A) Communication Control chip are connected with the 3 pin terminals (the 3rd terminals) of U7 (MAX811) auto-initiation chip, and 54,55,56 pin terminals (VDD) of U5 (SIM900A) Communication Control chip are connected with 4 pin terminals (VDD) of U7 (MAX811) auto-initiation chip and 3 pin terminals (VDD) of U6 (LM1084) power supply chip.
In the time of robot calculator and external equipment energising work, P1 connects U6 (LM1084) power supply chip by power supply through VCC, 3 pin terminals of U6 (LM1084) power supply chip are exported a power supply (VDD) and are sent into 54 of U5 (SIM900A) Communication Control chip, 55, 4 pin terminals of 56 pin terminals and U7 (MAX811) auto-initiation chip, at this moment 1 pin terminals (PORKEY) of 3 pin terminals control U5 (SIM900A) the Communication Control chips of U7 (MAX811), make SIM900A automatically carry out initialization, make data communication card can pass through U3 (75232), data-switching is become serial data format by U2 (SP3238E), pass through again U1 (CH352) and convert serial data format to data layout that robot calculator bus interface can be identified, exchange with the data that realize between robot calculator and external equipment, like this, export again activation signal without robot calculator bus interface, just make data communication card complete its normal function that uses.
Claims (2)
1. one kind is carried out initialized data communication card automatically, comprise Communication Control chip (U5) connecting interface chip (U1), serial port communication chip group and sim card interface chip (U4) respectively, described interface chip (U1) connects serial port communication chip group, it is characterized in that: the 3rd terminals of the PORKEY pin terminals of described Communication Control chip (U5) and auto-initiation chip (U7) are connected, and receive the initialization command that auto-initiation chip (U7) sends; The VBAT terminals of Communication Control chip (U5) connect respectively the VDD terminals of auto-initiation chip (U7) and the VDD terminals of power supply chip (U6).
2. according to claim 1ly automatically carry out initialized data communication card, it is characterized in that: described serial port communication chip group comprises interconnected first serial communication chip (U2) and second serial communication chip (U3), wherein first serial communication chip (U2) is connected with interface chip (U1) and Communication Control chip (U5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247802.8U CN203882311U (en) | 2014-05-14 | 2014-05-14 | Data communication card with initialization carried out automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247802.8U CN203882311U (en) | 2014-05-14 | 2014-05-14 | Data communication card with initialization carried out automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882311U true CN203882311U (en) | 2014-10-15 |
Family
ID=51682789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247802.8U Expired - Lifetime CN203882311U (en) | 2014-05-14 | 2014-05-14 | Data communication card with initialization carried out automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882311U (en) |
-
2014
- 2014-05-14 CN CN201420247802.8U patent/CN203882311U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |