CN101944136A - Multi-path asynchronous serial communication information recording device and method thereof - Google Patents
Multi-path asynchronous serial communication information recording device and method thereof Download PDFInfo
- Publication number
- CN101944136A CN101944136A CN 201010273291 CN201010273291A CN101944136A CN 101944136 A CN101944136 A CN 101944136A CN 201010273291 CN201010273291 CN 201010273291 CN 201010273291 A CN201010273291 A CN 201010273291A CN 101944136 A CN101944136 A CN 101944136A
- Authority
- CN
- China
- Prior art keywords
- serial communication
- asynchronous serial
- information
- chip microprocessor
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a multi-path asynchronous serial communication information recording device and a method thereof. The device consists of a singlechip microprocessor, RS232, RS485 and UART interface circuits which are connected with an external asynchronous serial communication circuit, and a USB bus interface circuit with USB-HOST host interface function. The singlechip microprocessor realizes acquisition, buffer and management to the multi-path asynchronous serial communication information, quantitatively saves the information into a U disk so as to realize long-term recording to the multi-path asynchronous serial communication information, so the saved data is convenient for analysis and comparison in the future because the data has time mark information. The device and the method are suitable for acquisition and recording of the multi-path asynchronous serial communication information in RS232, RS485 and UART modes or other modes.
Description
Technical field
The present invention relates to technical fields such as computer communication technology, embedded system.Particularly relate to multi-path asynchronous serial communication massaging device of a kind of record and method, be applicable to RS232, RS485 or UART asynchronous serial communication information are gathered and record, also be applicable to the asynchronous serial communication information of other interface standards is gathered and record.
Background technology
Asynchronous serial communication need not data clock, frame synchronization clock isochronon signal, the transmission of data and reception are self synchronous, rely on the level of the Transmission bit rate of receiving-transmitting sides agreement and data line self to change fully and come transceive data bit stream correctly, it is online simple simultaneously, adopt RS232 level or differential level, the distance of transmission is than the length of synchronous communication.Just because of above-mentioned advantage is arranged, asynchronous serial communication is widely used in embedded system, embedded system communicates by letter with PC, and the equipment of band asynchronous serial port communicates, networking between the networking between the system, equipment, and asynchronous serial communication is a kind of important communication means.The channel that in many embedded devices or system, has a plurality of employing asynchronous serial communications, and the communication sequential aspect of these channels exists some incidence relations toward contact.Above-mentioned embedded device or system develop with debug process in, need gather for a long time, monitor, write down, analyze these multi channel asynchronous serial communication information.The method and apparatus that therefore can write down multi-path asynchronous serial communication information just seems very necessary.
Summary of the invention
The object of the present invention is to provide multi-path asynchronous serial communication massaging device of a kind of record and method.This device mainly is made up of chip microprocessor, a plurality of interface circuit, usb bus interface circuit that connects with external asynchronous serial communication circuit.Connect with external asynchronous serial communication circuit by RS232 interface circuit, RS485 interface circuit, UART interface circuit, be connected with USB device (USB flash disk) by the USB-HOST host interface; Input by the chip microprocessor UART in the device or the input of simulation UART realize the collection to multi-path asynchronous serial communication information, and deposit separately buffer area in, when the length of the length that receives information more than or equal to regulation, the information that this passage is received deposits the USB flash disk corresponding file in, thereby realizes the non-volatile recording to multi-path asynchronous serial communication information.These apparatus and method do not influence reliability, the stability of asynchronous serial communication, but have realized real-time collection and record to multi-path asynchronous serial communication information.
For achieving the above object, the present invention adopts following technical proposals:
The multi-path asynchronous serial communication massaging device of a kind of record, comprise a chip microprocessor, a plurality of interface circuit and usb bus interface circuit that connects with external asynchronous serial communication circuit, it is characterized in that: described chip microprocessor is provided with circuit by a plurality of interface circuits that are connected with external asynchronous serial communication circuit of bus connection, a usb bus interface circuit, a clock circuit, an expansion RAM, a reference number
Described chip microprocessor receives the information of asynchronous serial communication from each passage, deposits buffer area separately in, and when the length of the information of the reception length more than or equal to regulation, the information that this passage is received deposits the USB flash disk corresponding file in.
Make modular on the RS232 interface circuit that connects with external asynchronous serial communication circuit, RS485 interface circuit and the UART interface circuit structure, identical with the connected mode of chip microprocessor, therefore can replace according to the interface mode of external asynchronous serial communication.
Chip microprocessor connects RS232 interface circuit, RS485 interface circuit and UART interface circuit by the input (RXD) of its UART that carries, gathers the information of external asynchronous serial communication.In order to expand the channel of gathering external asynchronous serial communication information, chip microprocessor also can be by the input of capture ratio than I/O mouth simulation RXD.
Real time clock circuit is used for producing timing signal, and when the markers signal time arrives, chip microprocessor is gathered real time clock information, and inserts in the information of the external asynchronous serial communication that collects, as the synchronous points between the different passages.
High capacity RAM is used for depositing the external asynchronous serial communication information that chip microprocessor collects, and each channel is provided with a ring-like memory block, and capacity is 1KBytes.When the data of this storage area stores during more than or equal to 512Bytes, chip microprocessor just writes these data among the corresponding De File of USB flash disk Xiang, discharges this storage space simultaneously.
Parameter setting circuit is used for being provided with the baud rate of each channel asynchronous serial communication, and be set the interval time that real time clock circuit produces timing signal.
Chip microprocessor is connected by the chip microprocessor bus with its peripheral circuit.
The multi-path asynchronous serial communication information approach of a kind of record adopts said apparatus to realize, it is characterized in that operation steps is as follows:
A) chip microprocessor is carried out initialization;
Whether b) chip microprocessor detects has USB device (USB flash disk) to connect.Connect, change c) carry out; Otherwise at b) wait for;
C) but chip microprocessor is checked the filename whether correct recorded information is arranged on the USB flash disk.Do not have, but create the filename of correct recorded information, change d) carry out; Have, change d) carry out;
D) chip microprocessor deposits buffer area separately in from the information of each passage reception asynchronous serial communication, revises the length that each passage receives information;
E) chip microprocessor checks that whether each passage receives the length of information more than or equal to 512bytes.Be, open the filename on the corresponding USB flash disk, the information that this passage is received deposits USB flash disk in, and close file is revised the length that this passage receives information, changes f) carry out; , do not change f) carry out;
Whether f) chip microprocessor detects has USB device (USB flash disk) to disconnect.Be, stop the information that each passage receives asynchronous serial communication, change b) carry out; Otherwise change d) carry out;
The multi-path asynchronous serial communication information approach of above-mentioned a kind of record, its step a) chip microprocessor is carried out initialization, comprises following content:
Chip microprocessor is set the baud rate that each passage receives according to the setting of panel-switch;
Chip microprocessor starts the real time clock of (or sheet is outer) in the sheet, according to the setting of panel-switch, determines the interval time of timing signal, initialization real time clock circuit parameter;
Chip microprocessor initialization usb bus interface circuit makes it be operated in the USB-HOST pattern.
The multi-path asynchronous serial communication information approach of above-mentioned a kind of record, but its step c) chip microprocessor is checked the filename whether correct recorded information is arranged on the USB flash disk, comprises following content:
The information of the asynchronous serial communication that each passage receives all is stored in USB flash disk separately independently in the file.The naming method of file is: CH adds channel number, and as No. 1 passage, its corresponding file is by name: CH1.The form of file is a binary file format, suffix .BIN.
But chip microprocessor is checked the filename whether above-mentioned recorded information is correctly arranged on the USB flash disk.If do not have, but in USB flash disk, create the filename of above-mentioned correct recorded information.
The multi-path asynchronous serial communication information approach of above-mentioned a kind of record, wherein the step d) chip microprocessor deposits buffer area separately in from the information of each passage reception asynchronous serial communication, revises the length that each passage receives information, comprises following content:
The information of the asynchronous serial communication that each passage receives before not depositing the USB flash disk file in, all is placed in the buffer area, each passage is provided with the ring-like buffer area of a 1K (1024) bytes; Each ring-like buffer area all has a head pointer and a tail pointer, the address that the head pointer directional information will deposit in, the address that the tail pointer directional information will take out; The length that each passage receives information is 0 to 1024.Whenever receive the information of a Byte, promptly deposit internal memory in, head pointer adds 1 simultaneously.
The multi-path asynchronous serial communication information approach of above-mentioned a kind of record, wherein step d) also comprises following content:
The timing signal time of judging real time clock if do not arrive, is skipped following steps to not; If time is up, carry out the following step:
1) the timing signal time of real time clock arrives, and chip microprocessor reads real-time clock time;
2) head pointer with each ring-like buffer area adds 11, vacates 11 bytes;
3) chip microprocessor deposits real-time clock time in each ring-like buffer area in step 2) 11 bytes vacating.
The above-mentioned real-time clock time form that deposits 11 bytes of each ring-like buffer area in is (seeing Figure of description table 1):
(byte) "/" divides (byte) " % " during the day moon in " % " year (byte) "/" (byte) "/" (byte) "/".
The invention solves the collection and the record of multi-path asynchronous serial communication information.Have following conspicuous outstanding substantive distinguishing features and remarkable advantage: the present invention is by adopting the interface of realization of RS232, RS485 and UART interface circuit and external asynchronous serial communication circuit; The usb bus interface circuit that employing has a USB-HOST host interface functionality has been realized the interface with the storage medium USB flash disk; The channel quantity to outside asynchronous serial communication information acquisition has been expanded in the input of adopting UART input (RXD) that chip microprocessor carries and capture ratio to simulate RXD than the I/O mouth; Adopt the real time clock method in canned data, to insert the markers synchronizing signal, make the information between the different channels that synchronous points relatively arranged.The present invention is applicable to for a long time multi-path asynchronous serial communication information is gathered and record, does not need personnel's operation and management at the scene; The data of storage are owing to there is time scale information to be convenient to from now on analysis and comparison.The present invention is applicable to the collection and the record of the multi-path asynchronous serial communication information of RS232, RS485, UART mode or alternate manner.
Description of drawings:
Fig. 1 is a kind of structured flowchart that writes down multi-path asynchronous serial communication massaging device.
Fig. 2 is a kind of process flow diagram that writes down multi-path asynchronous serial communication information approach.
Fig. 3 is the structured flowchart of a multi-path asynchronous serial communication massaging device of concrete record.
Fig. 4 is each passage record, buffer memory, storage USB flash disk, target sequential synoptic diagram when adding.
Embodiment:
Details are as follows in conjunction with the accompanying drawings for the preferred embodiments of the present invention:
Embodiment one: referring to Fig. 1, this writes down multi-path asynchronous serial communication massaging device, comprise a chip microprocessor, a plurality of interface circuits that connect with external asynchronous serial communication circuit, a usb bus interface circuit, a real time clock circuit, an expansion RAM, a parameter setting circuit, chip microprocessor connects above-mentioned peripheral circuit by bus.
Embodiment two: referring to Fig. 3, present embodiment and embodiment one are basic identical, and special feature is as follows: a kind of device that writes down multi-path asynchronous serial communication information that provides in this example adopts following device to form:
1) chip microprocessor P89C668.
2) with the interface of external asynchronous serial communication: 2 channels adopt the RS485 interfaces, and 2 channels adopt the RS232 interfaces, and 2 channels adopt the UART interfaces.
3) adopt the HOST main frame of CH375 chip as usb bus, chip microprocessor can be read and write file and data in the USB flash disk by CH375.Chip microprocessor is by parallel bus and CH375 interface.
4) chip has the UART of a full duplex, and 5 capture ratios are than the I/O mouth, can be modeled to the input of UART by software, so the external asynchronous serial communication information that this device at most can acquisition and recording six channels.
5) chip microprocessor P89C668 has the internal RAM of 7936 Bytes, uses 6144Bytes wherein to deposit the external asynchronous serial communication information that chip microprocessor collects.
6) real time clock adopts PCF8563, and chip microprocessor is by I2C bus and PCF8563 interface.
The situation of six road asynchronous serial communication circuits of this device acquisition and recording is as follows:
First passage: RS485 communication mode, baud rate 2400, the about 16-20Bytes data traffic of per second;
Second channel: RS485 communication mode, baud rate 2400, per 15 seconds about 60Bytes data traffics;
Third channel: RS232 communication mode, baud rate 9600, the about 160Bytes data traffic of per minute;
Four-way: RS232 communication mode, baud rate 9600, the about 120Bytes data traffic of per minute;
Five-way road: UART level, baud rate 19200, the about 250Bytes data traffic of per minute;
The 6th passage: UART level, baud rate 19200, the about 80Bytes data traffic of per minute;
The 6144Bytes of each channel occupancy chip microprocessor internal RAM deposits the external asynchronous serial communication information that collects.Concrete distribution is as follows:
First passage: use internal RAM address 0x0000-0x03FF;
Second channel: use internal RAM address 0x0400-0x07FF;
Third channel: use internal RAM address 0x0800-0x0BFF;
Four-way: use internal RAM address 0x0C00-0x0FFF;
Five-way road: use internal RAM address 0x1000-0x13FF;
The 6th passage: use internal RAM address 0x1400-0x17FF;
The timing signal time interval of real time clock is set to 5 minutes.
The USB flash disk capacity of record asynchronous serial communication information is 2G.
Embodiment three: referring to Fig. 2, this writes down multi-path asynchronous serial communication information approach, adopts said apparatus to write down communication information, and its operation steps is as follows:
1) chip microprocessor is carried out initialization.
It is 2400 that UART (connection first passage) baud rate that the chip microprocessor chip carries is set, and the capture ratio of simulation UART (connecting second channel to the six channels) is set at 26us than the I/O timer; Initialization real time clock parameter, and start real time clock; Initialization CH375, it is operated in the USB-HOST pattern to make the usb bus interface circuit.
Whether 2) chip microprocessor detects has USB device (USB flash disk) to connect.If connect, then forward step 3) to and carry out, otherwise in step 2) wait for.
3) but chip microprocessor is checked the filename whether correct recorded information is arranged on the USB flash disk, if do not have, but then create the filename of correct recorded information, be respectively: CH1.BIN, CH2.BIN, CH3.BIN, CH4.BIN, CH5.BIN, CH6.BIN changes step 4) then and carries out.
If existing, change step 4) and carry out.
4) chip microprocessor deposits buffer area separately in from the information of each channel reception asynchronous serial communication.
The about 20Bytes of data traffic per second of first passage, receiving 512Bytes approximately needs 26 seconds;
Per 15 seconds about 60Bytes of the data traffic of second channel, receiving 512Bytes approximately needs 128 seconds;
The about 160Bytes of data traffic per minute of third channel, receiving 512Bytes approximately needs 192 seconds;
The about 120Bytes of data traffic per minute of four-way, receiving 512Bytes approximately needs 256 seconds;
The about 250Bytes of data traffic per minute in five-way road, receiving 512Bytes approximately needs 123 seconds;
The about 80Bytes of data traffic per minute of the 6th passage, receiving 512Bytes approximately needs 384 seconds;
Every 5 minutes, chip microprocessor read real-time clock time, inserted real-time clock time information in each passage buffer storage district.
Real-time clock time information accounts for 11 bytes, and its form is: (byte) "/" divides (byte) " % " during the day moon in " % " year (byte) "/" (byte) "/" (byte) "/".
5) chip microprocessor checks that whether the length of each channel receiving information is more than or equal to 512bytes.If condition satisfies, open the file on the pairing USB flash disk of this passage, the information that this channel is received deposits USB flash disk in, closes this document then, and the tail pointer with this channel buffer adds 512 simultaneously, discharges the 512bytes storage space, changes step 6) then and carries out;
If condition does not satisfy, change step 6) and carry out.Target sequential synoptic diagram as shown in Figure 4 when each passage record, buffer memory, storage USB flash disk, interpolation.
Whether 6) chip microprocessor detects has USB device (USB flash disk) to disconnect.Be, stop the information that each passage receives asynchronous serial communication, change step 2) carry out; Otherwise changeing step 4) carries out.
The USB flash disk capacity that writes down asynchronous serial communication information in this example is 2G, and 6 channel asynchronous serial communication information of above-mentioned data traffic are carried out record, and after 30 days (=2592000 seconds), the capacity of each file can calculate with following formula in the USB flash disk:
File size=per second data traffic (Bytes/ per second) * 2592000
Record first passage information, filename: CH1.BIN, file size=20 * 2592000=51MB
Record second channel information, filename: CH2.BIN, file size=60/15 * 2592000=1MB
Record third channel information, filename: CH3.BIN, file size=160/60 * 2592000=7MB
Write down four-way information, filename: CH4.BIN, file size=210/60 * 2592000=9MB
Write down five-way road information, filename: CH5.BIN, file size=250/60 * 2592000=11MB
Write down the 6th channel information, filename: CH6.BIN, file size=80/60 * 2592000=3.5MB
Above-mentioned real-time clock time form is as shown in table 1.
Table 1
Claims (10)
1. one kind is write down multi-path asynchronous serial communication massaging device, comprise: a chip microprocessor (U100), a plurality of interface circuit that connects with external asynchronous serial communication circuit and usb bus interface circuit (U500) is characterized in that: described chip microprocessor is provided with circuit (U800) by a plurality of interface circuits that are connected with external asynchronous serial communication circuit of bus (U900) connection, a usb bus interface circuit (U500), a clock circuit (U600), an expansion RAM (U700), a reference number; Described chip microprocessor (U100) receives the information of asynchronous serial communication from each passage, deposits buffer area separately in, and when the length of the information of the reception length more than or equal to regulation, the information that this passage is received deposits the USB flash disk corresponding file in.
2. the multi-path asynchronous serial communication massaging device of a kind of record as claimed in claim 1 is characterized in that: the interface circuit that connects with external asynchronous serial communication circuit is meant RS232 interface circuit (U200), RS485 interface circuit (U300) and UART interface circuit (U400).
3. the multi-path asynchronous serial communication massaging device of a kind of record as claimed in claim 1, it is characterized in that: usb bus interface circuit (U500) is meant the circuit with USB-HOST host interface functionality.
4. the multi-path asynchronous serial communication massaging device of a kind of record as claimed in claim 1, it is characterized in that: described chip microprocessor (U100) can receive the passage of asynchronous serial communication information by the various interface circuit, be the input (RXD) of chip microprocessor UART, or chip microprocessor is by the input of input port simulation UART.
5. the multi-path asynchronous serial communication information approach of record adopts the multi-path asynchronous serial communication massaging device of record as claimed in claim 1 to write down communication information, it is characterized in that it is as follows to comprise operation steps:
A) chip microprocessor (U100) is carried out initialization;
Whether b) chip microprocessor (U100) detects has USB device (USB flash disk) to connect.If connect, then change step c) and carry out; Otherwise wait in step b);
C) chip microprocessor (U100) but check the filename whether correct recorded information is arranged on the USB flash disk, if do not have, but then create the filename of correct recorded information, change step d) and carry out; If have, then change step d) and carry out;
D) chip microprocessor (U100) deposits buffer area separately in from the information of each passage reception asynchronous serial communication, revises the length that each passage receives information;
E) chip microprocessor (U100) checks that whether length that each passage receives information is more than or equal to 512bytes, if then open the filename on the corresponding USB flash disk, the information that this passage is received deposits USB flash disk in, close file is revised the length that this passage receives information, changes step f) and carries out; If not, then changeing step f) carries out;
Whether f) chip microprocessor (U100) detects USB device, and promptly USB flash disk disconnects, if, then stop the information that each passage receives asynchronous serial communication, change step b) and carry out; If not, then changeing step d) carries out;
6. the multi-path asynchronous serial communication information approach of a kind of record as claimed in claim 5 is characterized in that described step a) chip microprocessor (U100) execution initialization, comprises following content:
Chip microprocessor (U100) is set the baud rate that each passage receives according to the setting of panel-switch;
Chip microprocessor (U100) starts in the sheet or the outer real time clock of sheet, according to the setting of panel-switch, determines the interval time of timing signal;
Chip microprocessor (U100) initialization usb bus interface circuit makes it be operated in the USB-HOST pattern.
7. the multi-path asynchronous serial communication information approach of a kind of record as claimed in claim 5, it is characterized in that described step c) chip microprocessor (U100) but check the filename whether correct recorded information is arranged on the USB flash disk, comprise following content: the information of the asynchronous serial communication that each passage receives all is stored in USB flash disk separately independently in the file; The naming method of file is: CH adds channel number, and as No. 1 passage, its corresponding file is by name: CH1; The form of file is a binary file format, suffix .BIN.
8. the multi-path asynchronous serial communication information approach of a kind of record as claimed in claim 5, it is characterized in that described step d) chip microprocessor (U100) receives the information of asynchronous serial communication from each passage, deposit buffer area separately in, revise the length that each passage receives information, its method is as follows: the information of the asynchronous serial communication that each passage receives, before not depositing the USB flash disk file in, all be placed in the buffer area, each passage is provided with the ring-like buffer area of a 1K (1024) bytes; Each ring-like buffer area all has a head pointer and a tail pointer, the address that the head pointer directional information will deposit in, the address that the tail pointer directional information will take out; The length that each passage receives information is 0 to 1024.
9. the multi-path asynchronous serial communication information approach of a kind of record as claimed in claim 5 is characterized in that described step d) may further comprise the steps:
D1) the timing signal time of real time clock arrives, and chip microprocessor reads real-time clock time;
D2) head pointer with each ring-like buffer area adds 11, vacates 11 bytes;
D3) chip microprocessor deposits real-time clock time in 11 bytes that each ring-like buffer area is vacated in steps d 2; Enter step e);
D4) the timing signal time of real time clock does not arrive, and enters step e).
10. the multi-path asynchronous serial communication information approach of a kind of record as claimed in claim 9 is characterized in that: the real-time clock time form that deposits 11 bytes of each ring-like buffer area in is: (byte) "/" divides (byte) " % " during the day moon in " % " year (byte) "/" (byte) "/" (byte) "/".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010273291 CN101944136A (en) | 2010-09-03 | 2010-09-03 | Multi-path asynchronous serial communication information recording device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010273291 CN101944136A (en) | 2010-09-03 | 2010-09-03 | Multi-path asynchronous serial communication information recording device and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101944136A true CN101944136A (en) | 2011-01-12 |
Family
ID=43436126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010273291 Pending CN101944136A (en) | 2010-09-03 | 2010-09-03 | Multi-path asynchronous serial communication information recording device and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101944136A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239254A (en) * | 2014-09-04 | 2014-12-24 | 西南技术物理研究所 | Serial asynchronous communication data transmission method |
| CN104660372A (en) * | 2015-02-09 | 2015-05-27 | 重庆华数机器人有限公司 | Multichannel data transmission method and system based on asynchronous serial port of single chip microcomputer |
| CN111123140A (en) * | 2018-11-01 | 2020-05-08 | 台达电子企业管理（上海）有限公司 | Time-sharing wave recording method |
| CN112448481A (en) * | 2020-12-14 | 2021-03-05 | 南方电网科学研究院有限责任公司 | Time scale processing method and system based on multi-framework power distribution automatic terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824007Y (en) * | 2005-06-28 | 2006-10-04 | 郑州铁路科学技术研究发展有限责任公司 | Intelligent multi-channel tester for bridge vibration and data acquiring adapter thereof |
| CN1924780A (en) * | 2006-09-18 | 2007-03-07 | 杭州电子科技大学 | Signal processing method for USB bus based built-in virtual instrument |
| CN101079075A (en) * | 2007-05-24 | 2007-11-28 | 北京交通大学 | Portable serial number recorder and implementation method |
| CN100419705C (en) * | 2006-11-29 | 2008-09-17 | 中国人民解放军理工大学 | Configurable universal synchronous and asynchronous communication debugging device and bugging method thereof |
-
2010
- 2010-09-03 CN CN 201010273291 patent/CN101944136A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824007Y (en) * | 2005-06-28 | 2006-10-04 | 郑州铁路科学技术研究发展有限责任公司 | Intelligent multi-channel tester for bridge vibration and data acquiring adapter thereof |
| CN1924780A (en) * | 2006-09-18 | 2007-03-07 | 杭州电子科技大学 | Signal processing method for USB bus based built-in virtual instrument |
| CN100419705C (en) * | 2006-11-29 | 2008-09-17 | 中国人民解放军理工大学 | Configurable universal synchronous and asynchronous communication debugging device and bugging method thereof |
| CN101079075A (en) * | 2007-05-24 | 2007-11-28 | 北京交通大学 | Portable serial number recorder and implementation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239254A (en) * | 2014-09-04 | 2014-12-24 | 西南技术物理研究所 | Serial asynchronous communication data transmission method |
| CN104239254B (en) * | 2014-09-04 | 2017-04-05 | 西南技术物理研究所 | serial asynchronous communication data transmission method |
| CN104660372A (en) * | 2015-02-09 | 2015-05-27 | 重庆华数机器人有限公司 | Multichannel data transmission method and system based on asynchronous serial port of single chip microcomputer |
| CN111123140A (en) * | 2018-11-01 | 2020-05-08 | 台达电子企业管理（上海）有限公司 | Time-sharing wave recording method |
| US11644974B2 (en) | 2018-11-01 | 2023-05-09 | Delta Electronics (Shanghai) Co., Ltd. | Time-sharing wave recording method |
| CN112448481A (en) * | 2020-12-14 | 2021-03-05 | 南方电网科学研究院有限责任公司 | Time scale processing method and system based on multi-framework power distribution automatic terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101419282B (en) | Integration high speed remote sensing data receiving and processing equipment | |
| CN104954096B (en) | A kind of high-speed synchronous serial communication data transmission method of one master and multiple slaves | |
| CN100426275C (en) | Bus interface devices and method | |
| CN101866328B (en) | Automatically accessed serial bus read/write control method | |
| CN101944136A (en) | Multi-path asynchronous serial communication information recording device and method thereof | |
| CN102495132A (en) | Multi-channel data acquisition device for submarine pipeline magnetic flux leakage internal detector | |
| CN100361523C (en) | A real-time acquisition system for digital camera | |
| CN103778772B (en) | Framing and interconnection transmitting method in electricity utilization information collecting system | |
| CN110401824A (en) | KVM optical transmission system, the tandem type optical transmitter and receiver, optical interface card of multiplexing | |
| CN101043281B (en) | Wavelength-division multiplex network synchronous digital hierarchy optical channel performance detecting device | |
| CN202676907U (en) | Multichannel weather radar data collecting device | |
| CN100511164C (en) | Method for using information of synchronous serial interface output and asynchronous serial port debugging on DSP | |
| CN105720986A (en) | Multi-channel data collection system with unified time stamp | |
| CN205810095U (en) | A kind of 32 Three-channel data harvesters with double wireless network | |
| CN102946338B (en) | 12-channel asynchronous serial data universal centralized collection device | |
| CN101674146B (en) | Method and system for aligning all dispatching services in optical transmission network | |
| CN112130485A (en) | High-speed multi-channel synchronous acquisition device and method | |
| CN102594514B (en) | Signaling link access and identification method | |
| CN100444561C (en) | Signal collecting module with exchanging convergence function | |
| CN103675848A (en) | Signal transmission method and system based on multichannel GNSS signals | |
| CN106973254B (en) | A kind of firmware data transmission method, device and a kind of digital monitor system | |
| CN108038069A (en) | A kind of hard disk backboard and its design method for RSSD exploitations | |
| CN116932438A (en) | Device and method for converting single USB into multiple RS232 | |
| CN204944518U (en) | The missile-borne telegauge of tape recording function | |
| CN209086917U (en) | A kind of intelligent substation interval dividing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110112 |