CN202795607U - Universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus - Google Patents
Universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus Download PDFInfo
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- CN202795607U CN202795607U CN 201220487486 CN201220487486U CN202795607U CN 202795607 U CN202795607 U CN 202795607U CN 201220487486 CN201220487486 CN 201220487486 CN 201220487486 U CN201220487486 U CN 201220487486U CN 202795607 U CN202795607 U CN 202795607U
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- 210000003205 muscle Anatomy 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to a universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus. The USB serial port LED double-flash alarm apparatus comprises a USB to serial port chip, a USB interface card, LEDs, a current-limiting resistor and a power supply filter circuit. The USB serial port LED double-flash alarm apparatus is characterized in that two receiving and sending base pins on the USB to serial port chip are in a pup joint, and a receiving state monitoring base pin and a sending state monitoring base pin on the USB to serial port chip are connected with the LEDs respectively. The USB to serial port chip is connected with a host machine through the USB interface card. The LEDs can be directly driven to flash to alarm through the USB interface by a host machine program, the host machine can be used for directly providing power without an external power supply, the structure is simple, the installation and usage are convenient, and the performances are reliable.
Description
Technical field
The utility model relates to a kind of alarm, particularly the two sudden strain of a muscle alarms of a kind of USB serial ports LED.
Background technology
The man-machine interface of power scheduling control center supervisory system is generally comparatively complicated, as: factory's station line chart, system load flow figure, warning information scrolling windows, curve map etc., cause the effect of the warning message classification indication on regulation and control person's workstation screen outstanding not, regulation and control person has to closely stare at for a long time the alarm window on the screen, very easily produce tired, occur affecting easily regulation and control person to the monitoring effect of operation of power networks situation in accident or the unusual situation at electrical network.Existing alarm generally adopts high power light source to dodge by force indication, and it needs external power supply, can not directly be driven neatly by the USB mouth by mainframe program, therefore is unsuitable for using in power scheduling control center.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can be by the two sudden strain of a muscle alarms of the USB serial ports LED that mainframe program drives.
The purpose of this utility model is achieved in that the two sudden strain of a muscle alarms of a kind of USB serial ports LED, comprise that USB turns serial port chip, USB interface plug-in unit, LED, current-limiting resistance and power supply filtering circuit, it is characterized in that USB turns the receipts on the serial port chip and sends out two pin short circuits, receipts status surveillance pin and a status surveillance pin that USB turns on the serial port chip are connected with respectively LED.
Described USB turns serial port chip and is connected with main frame by the USB interface plug-in unit.
The utility model has the advantages that: can be by mainframe program by neatly directly driving LED warning of glittering of USB mouth, and directly power and do not need external power supply by main frame; Can also drive neatly flicker according to the important level of alerting signal by mainframe program; It is simple in structure, easy to install, dependable performance.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, it is 28 pin chips that the USB that present embodiment provides turns serial port chip U1, present embodiment is only used TXD pin, VCCIO pin, RXD pin, GND pin (the 7th, 18,21 pin), USBDP pin, USBDM pin, 3V3OUT pin, CBUS1 pin, CBUS0 pin, AGND pin, VCC pin, TEST pin wherein, totally 14 pin, other pin is unsettled.
The TXD pin that USB turns serial port chip directly links to each other with the RXD pin, is used for the transmitting-receiving loop of data transmission; GND, AGND pin ground connection are for circuit in the chip provides shielding and reference potential; TEST pin ground connection is in normal operating conditions after making chip power.
The USBDM pin that USB turns serial port chip be connected with the USBDP pin with 2 pin of USB interface plug-in unit JP1 with are connected pin and are connected, be used for carrying out data transmission.
USB turns the 3V3OUT pin of serial port chip by capacitor C 4 ground connection, is used for the power supply clutter and filters.
1 jiao of the VCC pin that USB turns serial port chip and USB interface plug-in unit is connected, for device provides working power.
The VCC pin that USB turns serial port chip is connected with ground by polar capacitor C2, capacitor C 3, and polar capacitor C2 is in parallel with capacitor C 3, is used for the power supply clutter and filters and voltage stabilizing.
The CBUS0 pin that USB turns serial port chip is connected with LED1, and LED1 links to each other with the VCC pin by current-limiting resistance R1, and CBUS0 pin output low level is lighted LED1 when sending data.
The CBUS1 pin that USB turns serial port chip is connected with LED2, and LED2 links to each other with the VCC pin by current-limiting resistance R2, and CBUS1 pin output low level is lighted LED2 during receive data.
1 pin of USB interface plug-in unit links to each other with 4 foot meridian capacitor C1, and 4 pin ground connection are used for the power supply clutter and filter.
The course of work of the present utility model is, USB turns serial port chip by USB interface plug-in unit and circumscribed USB cable and host communication, the data that Receiving Host transmits, because USB turns the transmitting-receiving pin loopback of serial port chip the sending and receiving signal is occurred simultaneously, and then driving LED 1 and two lamps of LED2 glimmer simultaneously, and the frequency of flicker and duration depend on the size of the data traffic that main frame sends and the parameters of serial ports baud rate.
Claims (2)
1. two sudden strain of a muscle alarms of a USB serial ports LED, comprise that USB turns serial port chip, USB interface plug-in unit, LED, current-limiting resistance and power supply filtering circuit, it is characterized in that USB turns the receipts on the serial port chip and sends out two pin short circuits, receipts status surveillance pin and a status surveillance pin that USB turns on the serial port chip are connected with respectively LED.
2. the two sudden strain of a muscle alarms of USB serial ports LED according to claim 1 is characterized in that described USB turns serial port chip and is connected with main frame by the USB interface plug-in unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487486 CN202795607U (en) | 2012-09-24 | 2012-09-24 | Universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487486 CN202795607U (en) | 2012-09-24 | 2012-09-24 | Universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202795607U true CN202795607U (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220487486 Expired - Fee Related CN202795607U (en) | 2012-09-24 | 2012-09-24 | Universal serial bus (USB) serial port light-emitting diode (LED) double-flash alarm apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202795607U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338083A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Soft signal testing terminal-row device |
| CN103679986A (en) * | 2012-09-24 | 2014-03-26 | 国网辽宁省电力有限公司大连供电公司 | USB serial-port LED double-flash alarm |
| CN104134301A (en) * | 2014-07-14 | 2014-11-05 | 北京首钢自动化信息技术有限公司 | USB interface acousto-optic alarm device |
-
2012
- 2012-09-24 CN CN 201220487486 patent/CN202795607U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103679986A (en) * | 2012-09-24 | 2014-03-26 | 国网辽宁省电力有限公司大连供电公司 | USB serial-port LED double-flash alarm |
| CN103338083A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Soft signal testing terminal-row device |
| CN103338083B (en) * | 2013-06-09 | 2016-03-30 | 国网辽宁省电力有限公司大连供电公司 | Soft signal testing terminal arranging device |
| CN104134301A (en) * | 2014-07-14 | 2014-11-05 | 北京首钢自动化信息技术有限公司 | USB interface acousto-optic alarm device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210924 |