CN209640839U - Serial ports monitoring device and system - Google Patents

Abstract

The utility model provides a kind of serial ports monitoring device and system, is related to serial port communication technology field.The serial ports monitoring device, applied to multiple electronic equipments, multiple electronic equipments include the first electronic equipment and the second electronic equipment, first serial and second serial are respectively equipped on first electronic equipment and the second electronic equipment, in the device, the first serial of one end of first data port and the first electronic equipment communicates to connect, the second serial of one end of second data port and the second electronic equipment communicates to connect, and the other end of the first data port and the second data port is electrically connected with electrical level transferring chip respectively；Pass through the selection of single-pole double-throw switch (SPDT), the first fiduciary level communicated between first data port and the second data port can be converted into monitoring corresponding second fiduciary level of interface by electrical level transferring chip, allow to monitoring the communication data between interface the first electronic equipment of monitoring and the second electronic equipment, simplify snoop procedure, so that monitoring more convenient.

Description

Serial ports monitoring device and system

Technical field

The utility model relates to serial port communication technology field, in particular to a kind of serial ports monitoring device and system.

Background technique

Serial communication refers to communicating pair by data signal line, ground wire, control line etc., and step-by-step carries out the one of transmission data Kind communication modes, the characteristics of having the data line used few, communications cost can be saved in telecommunication.Wherein, it is based on The mode of serial communication includes accordingly serial ports screen, and serial ports screen refers to that serial ports screen can be complete with the liquid crystal display of serial ports control Prevent the problems such as snowflake, messy code existing for segment controller, timing are incompatible, operating temperature range is narrow entirely, can be answered extensively For fields such as industrial automation, electric power, telecommunications.

In the prior art, the side of the communication data of serial ports screen and micro-control unit (Microcontroller Unit, MCU) Method mainly turns logic gates (Transistor- using universal serial bus (Universal Serial Bus, USB) Transistor Logic, TTL) level or standard interface RS232 level mode, the serial ports output data of MCU is transported to It is shown on computer, to realize the monitoring to data between serial ports screen and micro-control unit on computers.

But the prior art is used, due to resulting in the need for spare there are Transistor-Transistor Logic level and the two different level of RS232 level For the Serial Port Line of two kinds of level in case monitoring, snoop procedure is highly inconvenient.

Utility model content

The purpose of this utility model is that in view of the deficiency of the prior art, provide a kind of serial ports monitoring device and System can monitor the data communication between plurality of level, so that serial ports snoop procedure is more convenient.

To achieve the above object, the utility model embodiment the technical solution adopted is as follows:

In a first aspect, the utility model embodiment provides a kind of serial ports monitoring device, it is applied to multiple electronic equipments, it is more A electronic equipment includes the first electronic equipment and the second electronic equipment, is respectively equipped on the first electronic equipment and the second electronic equipment First serial and second serial, serial ports monitoring device include: that the power circuit, level shifting circuit and monitoring being electrically connected to each other connect Mouthful；

Power circuit is the power supply of serial ports monitoring device；Level shifting circuit include the first data port, the second data port, Electrical level transferring chip and single-pole double-throw switch (SPDT)；The first serial communication link of one end of the first data port and the first electronic equipment It connects, the second serial of one end of the second data port and the second electronic equipment communicates to connect, the first data port and described second The other end of data port is electrically connected with electrical level transferring chip respectively；One end of single-pole double-throw switch (SPDT) is electrically connected with electrical level transferring chip It connects, the other end ground connection of single-pole double-throw switch (SPDT), the first mark for will be communicated between the first data port and the second data port Quasi- level is exported to electrical level transferring chip；Electrical level transferring chip is used to that the first fiduciary level to be converted into monitoring interface corresponding the Two fiduciary levels；It monitors interface to be used for after the first fiduciary level is converted into the second fiduciary level, monitors first serial and the Communication data between two serial ports.

Further, the first data port includes the first data sending terminal and the first data receiver, the second data port Including the second data sending terminal and the second data receiver；First data sending terminal is used to send the communication data of first serial To the second data receiver；Second data sending terminal is used to the communication data of second serial being sent to the first data receiver.

Optionally, monitoring interface includes that the first monitoring interface and second monitor interface；First monitoring interface is for monitoring Communication data between first data sending terminal and the second data receiver；Second monitors interface for monitoring the first data receiver Communication data between end and the second data sending terminal.

It optionally, further include the first listening key and the second listening key；One end of first listening key and the first data Transmitting terminal electrical connection, the other end are electrically connected with electrical level transferring chip；One end of second listening key and the first data receiver electricity Connection, the other end are electrically connected with electrical level transferring chip.

Optionally, the first fiduciary level is Transistor-Transistor Logic level or RS232 level.

Optionally, monitoring interface is RS232 interface, and monitoring corresponding second fiduciary level of interface is RS232 level.

Optionally, the first fiduciary level is one of Transistor-Transistor Logic level, RS232 level.

Optionally, the first data port and the second data port are winding displacement stand.

Optionally, winding displacement stand includes multiple.

Optionally, electrical level transferring chip is M74HCT86 chip.

Second aspect, the utility model embodiment additionally provides a kind of serial ports monitoring system, including above-mentioned first aspect Serial ports monitoring device.

The beneficial effects of the utility model are:

Serial ports monitoring device provided by the embodiment of the utility model and system, in the device, one end of the first data port It is communicated to connect with the first serial of the first electronic equipment, the second serial of one end of the second data port and the second electronic equipment is logical The other end of letter connection, the first data port and the second data port is electrically connected with electrical level transferring chip respectively；It is double by hilted broadsword The selection of throw switch can turn the first fiduciary level communicated between the first data port and the second data port by level Chip is changed to be converted into monitoring corresponding second fiduciary level of interface, allow to monitor interface monitor the first electronic equipment and Communication data between second electronic equipment simplifies snoop procedure, so that monitoring more convenient.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is a kind of structural schematic diagram of monitoring device provided by the embodiment of the utility model；

Fig. 2 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model；

Fig. 3 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model；

Fig. 6 is a kind of structural schematic diagram of level shifting circuit provided by the embodiment of the utility model.

Icon: the first electronic equipment of 110-；The second electronic equipment of 120-；200- power circuit；300- level shifting circuit； The first data port of 310-；The first data sending terminal of 311-；The first data receiver of 312-；The second data port of 320-；321- Second data sending terminal；The second data receiver of 322-；330- electrical level transferring chip；The first pin of 1-；2- second pin；4- Four pins；The 5th pin of 5-；The 6th pin of 6-；The 8th pin of 8-；The 9th pin of 9-；The tenth pin of 10-；The 11st pin of 11-； The 12nd pin of 12-；The 13rd pin of 13-；18- first resistor；341- first diode；342- 3rd resistor；343- second Diode；The first voltage-stabiliser tube of 344-；The 4th resistance of 345-；351- third diode；The 5th resistance of 352-；The four or two pole 353- Pipe；The second voltage-stabiliser tube of 354-；The 6th resistance of 355-；400- monitors interface；410- first monitors interface；The monitoring of 420- second connects Mouthful；The first listening key of 430-；The second listening key of 440-；500- single-pole double-throw switch (SPDT)；600- winding displacement stand.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

Fig. 1 is a kind of structural schematic diagram of monitoring device provided by the embodiment of the utility model.The serial ports monitoring device, is answered For multiple electronic equipments, multiple electronic equipments include that the first electronic equipment 110 and the second electronic equipment 120, the first electronics are set Standby 110 and second are respectively equipped with first serial and second serial on electronic equipment 120.Optionally, the first electronic equipment 110 can be with It is single-chip microcontroller, FPGA etc. with serial ports, the application is defined not to this；Second electronic equipment 120 can be with string The serial ports display screen of mouth, naturally it is also possible to be single-chip microcontroller, FPGA etc. with serial ports, the application is defined not to this.

As shown in Figure 1, serial ports monitoring device includes: the power circuit 200 being electrically connected to each other, 300 and of level shifting circuit Monitor interface 400.

Power circuit 200 is the power supply of serial ports monitoring device；Level shifting circuit 300 includes the first data port 310, second Data port 320, electrical level transferring chip 330 and single-pole double-throw switch (SPDT) 500；One end of first data port 310 and the first electronics The first serial of equipment 110 communicates to connect, and the second serial of one end of the second data port 320 and the second electronic equipment 120 is logical The other end of letter connection, the first data port 310 and the second data port 320 is electrically connected with electrical level transferring chip 330 respectively；It is single One end of double-pole double throw switch 500 is electrically connected with electrical level transferring chip 330, and the other end ground connection of single-pole double-throw switch (SPDT) 500, being used for will The first fiduciary level communicated between first data port 310 and the second data port 320 is exported to electrical level transferring chip 330； Electrical level transferring chip 330 is used to for the first fiduciary level being converted into monitor corresponding second fiduciary level of interface 400；Monitor interface 400 for monitoring between first serial and the second serial after the first fiduciary level is converted into the second fiduciary level Communication data.

Wherein, power circuit 200 is the power supply of serial ports monitoring device, refers to being the electronics member on serial ports monitoring device Device power supply, certainly, the application is not intended to limit the size of the supply voltage of power circuit 200, according to different electronic components It is required that can provide supply voltage of corresponding size.For example, serial ports monitoring device includes level shifting circuit 300, i.e. power circuit 200 can power for level shifting circuit 300, and correspondingly, supply voltage can be 3.3V, 5V etc., according to level conversion electricity Road 300 can provide corresponding supply voltage to the needs of supply voltage, power circuit 200.

Single-pole double-throw switch (SPDT) 500 is for selecting the first fiduciary level of first serial or corresponding second standard of second serial Level is exported to electrical level transferring chip 330, for example, single-pole double-throw switch (SPDT) 500 includes first switch and the second switch, wherein will For single-pole double-throw switch (SPDT) 500 when first switch is closed, when corresponding selection, exports the first fiduciary level of first serial to electricity Flat conversion chip 330；By single-pole double-throw switch (SPDT) 500 when second switch is closed, corresponding selection is by the of second serial Two fiduciary levels are exported to electrical level transferring chip 330.

Further, the first fiduciary level or the second fiduciary level can be converted into monitoring and connect by electrical level transferring chip 330 400 corresponding fiduciary levels of mouth allow to by that can monitor the first data port 310 and second on monitoring interface 400 Communication data between data port 320.

When serial ports monitoring device is applied to the first electronic equipment 110 and the second electronic equipment 120, monitors the first electronics and set Standby 110 and when the second serial data between electronic equipment 120, the is sent in the application to monitor the first electronic equipment 110 It is illustrated for serial data between two electronic equipments 120, specific data flow are as follows: the serial ports of the first electronic equipment 110 Data are sent to the first data port 310 through first serial, and the first data port 310 then passes through after receiving serial data Serial data transmission channel between first data port 310 and the second data port 320 sends out received serial data It is sent to the second data port 320, further, the second data port 320 then receives the serial ports number of the first data port 310 transmission According to, and received serial data is transferred to by the second electronic equipment 120 by the second serial of the second electronic equipment 120, Realize the transmission of serial data between the first electronic equipment 110 and the second electronic equipment 120.So that by level shifting circuit 300 and monitor interface 400 be arranged between the first data port 310 and the second data port 320, the first electronics can be listened to Serial data between equipment 110 and the second electronic equipment 120.

In conclusion serial ports monitoring device provided herein, is applied to multiple electronic equipments, multiple electronic equipment packets The first electronic equipment and the second electronic equipment are included, first serial and are respectively equipped on the first electronic equipment and the second electronic equipment Two serial ports, the device include: the power circuit, level shifting circuit and monitoring device being electrically connected to each other, wherein power circuit is The first serial of the power supply of serial ports monitoring device, one end of the first data port and the first electronic equipment communicates to connect, the second data The second serial of one end of port and the second electronic equipment communicates to connect, the other end of the first data port and the second data port It is electrically connected respectively with electrical level transferring chip；It, can be by the first data port and the second data by the selection of single-pole double-throw switch (SPDT) The first fiduciary level communicated between port is output to electrical level transferring chip, and then electrical level transferring chip is by the first standard electric flat turn It changes into after monitoring corresponding second fiduciary level of interface, allows to directly monitor the first data port and the monitoring interface Communication data between two data port simplifies snoop procedure, so that monitoring more convenient.

Fig. 2 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model.Further, such as Fig. 2 Shown, the first data port 310 includes the first data sending terminal 311 and the first data sending terminal 311, the second data port 320 Including the second data sending terminal 321 and the second data receiver 322；First data sending terminal 311 is used for the logical of first serial Letter data is sent to the second data receiver 322；Second data sending terminal 321 is for the communication data of second serial to be sent to First data sending terminal 311.

Wherein, the first data port 310 includes the first data sending terminal 311 and the first data sending terminal 311, for example, working as First data port 310 using 10 pin of FPC connecting terminal when, wherein FPC is referred to can be to a certain extent Curved connecting line group, then the first data sending terminal 311 corresponds to the TX pin of the first data port 310, and the first data are sent End 311 corresponds to the RX pin of the first data port 310；Second data port 320 includes the second data sending terminal 321 and second Data receiver 322, for example, then second being counted when connecting terminal of first data port 310 using 10 pin of FPC The TX pin of the second data port 320 is corresponded to according to transmitting terminal 321, the second data receiver 322 corresponds to the second data port 320 RX pin, but be not limited thereto.

Specific communication process are as follows: the first data sending terminal 311 receives the first electronic equipment 110 first and sent out by first serial Then the serial data is sent to the second data receiver 322 by the serial data sent；Similarly, the second data sending terminal 321 The serial data that the second electronic equipment 120 is sent by second serial is received first, and the serial ports letter data is then sent to One data sending terminal 311, so that serial data between the first electronic equipment 110 and the second electronic equipment 120 passes through the One data port 310 and the second data port 320 realize the transmitted in both directions of serial data.

Fig. 3 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model.Optionally, such as Fig. 3 institute Show, monitoring interface 400 includes that the first monitoring interface 410 and second monitor interface 420；First monitors interface 410 for monitoring the Communication data between one data sending terminal 311 and the second data receiver 322；Second monitors interface 420 for monitoring first Communication data between data sending terminal 311 and the second data sending terminal 321.

Wherein, it is applied according to actual monitoring, monitoring interface 400 may include that the first monitoring interface 410 and second is monitored Interface 420 so that the first monitoring interface 410 can be exclusively used in monitoring the first data sending terminal 311 and the second data receiver 322 it Between communication data；And the second monitoring interface 420 can be exclusively used in monitoring the first data sending terminal 311 and the second data sending terminal Communication data between 321 improves serial ports so that commissioning staff can individually monitor according to actual debugging situation The flexibility and applicability of monitoring device.

Fig. 4 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model.Optionally, such as Fig. 4 institute Show, further includes the first listening key 430 and the second listening key 440；One end of first listening key 430 and the first data are sent 311 electrical connection of end, the other end are electrically connected with electrical level transferring chip 330；One end of second listening key 440 and the first data are sent 311 electrical connection of end, the other end are electrically connected with electrical level transferring chip 330.

Certainly, according to actual monitoring scene, serial ports monitoring device may also include the first listening key 430 and second and monitor Switch 440, so that commissioning staff can need selectivity to monitor according to actual debugging by the introducing of multiple listening keys, Improve the flexibility and usability of serial ports monitoring device.

For example, corresponding, commissioning staff can supervise when the first listening key 430 and the second listening key 440 open simultaneously Listen the communication data between the first data sending terminal 311 and the second data receiver 322, the second data sending terminal 321 and first Communication data between data sending terminal 311；And the first listening key 430 closes, and when the second listening key 440 opens, i.e. table Show that commissioning staff can monitor the communication data between the second data sending terminal 321 and the first data sending terminal 311, certainly, needs It is noted that can also be opened the first listening key 430 according to the needs actually monitored, the second listening key 440 is closed It closes, specific listening mode can be adjusted accordingly as needed, and the application just repeats no more herein.

Optionally, the first fiduciary level is Transistor-Transistor Logic level or RS232 level.

Wherein, it should be noted that it can be RS232 electricity that the first fiduciary level, which can be Transistor-Transistor Logic level, the second fiduciary level, It is flat, so that passing through the conversion of the serial ports monitoring device, it is right that Transistor-Transistor Logic level or RS232 level can be converted into monitoring interface 400 The fiduciary level answered eliminates the serial ports for needing to prepare two kinds of level respectively for two kinds of various criterion voltages in snoop procedure Line facilitates commissioning staff to the debugging process of serial port communication data.

Optionally, monitoring interface 400 is RS232 interface, and the monitoring corresponding fiduciary level of interface 400 is RS232 level.

When monitoring interface 400 is RS232 interface, then monitoring the corresponding fiduciary level of interface 400 is RS232 level, so that Commissioning staff uses the audiomonitor with RS232 interface that can connect with interface 400 is monitored, and then can have RS232 The serial port communication data between the first electronic equipment 110 and the second electronic equipment 120 is monitored on the audiomonitor of interface.In addition, It should be noted that since RS232 interface is divided into male connector and female again, if then monitoring the RS232 interface that interface 400 is male connector When, then corresponding, the audiomonitor with RS232 interface should be the RS232 interface of female, so that monitoring interface 400 and monitoring The transmission of data may be implemented between equipment by RS232 Serial Port Line.

For example, the first electronic equipment 110 is single-chip microcontroller, the second electronic equipment 120 is serial ports display screen, is connect with RS232 The audiomonitor of mouth can be laptop, computer etc., will by RS232 Serial Port Line for this sentences laptop The RS232 interface of laptop is connect with interface 400 is monitored, and allowing to commissioning staff can monitor on laptop Serial port communication data between single-chip microcontroller and serial ports display screen greatly facilitates the debugging efforts of commissioning staff.

Fig. 5 is the structural schematic diagram of another monitoring device provided by the embodiment of the utility model.Optionally, such as Fig. 5 institute Show, the first data port 310 and the second data port 320 are winding displacement stand 600.

Wherein, the first data port 310 and the second data port 320 can be winding displacement stand 600, so that the first electronics Equipment 110 and the second electronic equipment 120 can be realized the first electronics and set respectively by winding displacement corresponding with the winding displacement stand 600 Standby 110 realize that data communication, the second electronic equipment 120 and the second data port 320 realization data are led to the first data port 310 Letter, and then realize the data communication between the first electronic equipment 110 and the second electronic equipment 120.

Optionally, the second electronic equipment 120 be serial ports screen when, the winding displacement stand 600 can with the winding displacement stand 600 of standard, For example, FPC 10Pin, PH2.08Pin, XH2.548Pin and 52648Pin winding displacement etc., wherein pin is the meaning of pin, 10pin then refers to the FPC winding displacement of 10 pins, FPC refer to can curved connecting line group to a certain extent, according to first The serial interface situation of electronic equipment 110 and the second electronic equipment 120 may be selected corresponding winding displacement stand 600, pass through winding displacement seat Son 600 is communicated.

Optionally, winding displacement stand 600 includes multiple.

Wherein, according to practical situation, on serial ports monitoring device, winding displacement corresponding to the first data port 310 be can wrap Include multiple, multiple winding displacement stands 600 may be the same or different；Second then corresponds to and first according to winding displacement corresponding to port The winding displacement stand 600 of institute's equipment is correspondingly arranged in data port 310, and multiple winding displacement stands 600 may be the same or different.

For example, winding displacement stand 600 corresponding to the first data port 310 is FPC 10Pin, then the second data port 320 Data communication is carried out between the first data port 310, the correspondence of winding displacement stand 600 also should be FPC 10Pin, so that the first number According to, by winding displacement corresponding with winding displacement stand 600, data communication can be realized between port 310 and the second data port 320.

Fig. 6 is a kind of structural schematic diagram of level shifting circuit provided by the embodiment of the utility model.Optionally, such as Fig. 6 Shown, electrical level transferring chip 330 is M74HCT86 chip.

Wherein, above-mentioned electrical level transferring chip 330 can be M74HCT86 chip, then the circuit of specific serial ports monitoring device Connection type is that the first pin 1 of M74HCT86 chip is grounded, and second pin 2 is connect with the 5th pin 5, and the 5th pin 5 is logical It crosses first resistor 18 to connect with power circuit 200, the 4th pin 4 passes through the first conditioning circuit and above-mentioned first data receiver 312 connections；Tenth pin 10 is connect with by the second conditioning circuit with above-mentioned first data sending terminal 311, the 12nd pin 12 Ground connection, the 13rd pin 13 connect with the 9th pin 9, and one end of above-mentioned single-pole double-throw switch (SPDT) 500 respectively with the 9th pin 9 and The connection of 5th pin 5；Then the output of corresponding 6th pin 6 is to convert the first fiduciary level of the first data receiver 312 At the communication data after the second fiduciary level；The output of 8th pin 8 is by the first fiduciary level of the first data sending terminal 311 Communication data after being converted into the second fiduciary level.In addition, it should be noted that, the connection side of other pins of M74HCT86 chip Formula can refer to corresponding chip handbook, and details are not described herein by the application.

Further, the first conditioning circuit includes: first diode 341,3rd resistor 342, the second diode 343, One voltage-stabiliser tube 344 and the 4th resistance 345, access way are as follows: one end of first diode 341 respectively with the first data receiver End 312 and the electrical connection of one end of 3rd resistor 342, the other end ground connection of first diode 341, the other end of 3rd resistor 342 It is electrically connected with one end of one end of the second diode 343, one end of the first voltage-stabiliser tube 344 and the 4th resistance 345, the two or two pole The other end of the other end of pipe 343, the other end of the first voltage-stabiliser tube 344 and the 4th resistance 345 is grounded.

Further, the second conditioning circuit includes: third diode 351, the 5th resistance 352, the 4th diode 353, Two voltage-stabiliser tubes 354 and the 6th resistance 355, access way are as follows: one end of third diode 351 respectively with the first data send End 311 and the electrical connection of one end of the 5th resistance 352, the other end ground connection of third diode 351, the other end of the 5th resistance 352 It is electrically connected with one end of one end of the 4th diode 353, one end of the second voltage-stabiliser tube 354 and the 6th resistance 355, the four or two pole The other end of the other end of pipe 353, the other end of the second voltage-stabiliser tube 354 and the 6th resistance 355 is grounded.

Wherein, it should be noted that the effect of above-mentioned first conditioning circuit and the second conditioning circuit is mainly: guaranteeing first The stability and prevent pulse signal and electrostatic introducing broken that data receiver 312 and 311 signal of the first data sending terminal input Bad electrical level transferring chip 330, certainly, the application not to the circuit connecting mode of the first conditioning circuit and the second conditioning circuit into Row limits, and according to actual service condition, can be adjusted correspondingly.

Wherein, the first fiduciary level can be Transistor-Transistor Logic level or RS232 level, using M74HCT86 chip by Transistor-Transistor Logic level or RS232 level conversion be RS232 level principle are as follows: chip M74HCT86 contains four XOR gates because RS232 level and The input terminal of XOR gate is connected to together, so by the low and high level logic of Transistor-Transistor Logic level on the contrary, then according to the conversion logic of XOR gate It can choose high level and low level using single-pole double-throw switch (SPDT) 500 afterwards, so that Transistor-Transistor Logic level is converted into RS232 level by control And interface is monitored in RS232 and is monitored, or RS232 level is transferred to RS232 monitoring interface and is monitored.For example, such as Fruit, which will be adapted to RS232 level single-pole double-throw switch (SPDT) 500 is just pushed the end A, draws high level, to be adapted to Transistor-Transistor Logic level just single-pole double throw Switch 500 pushes C-terminal and drags down level.Although in addition, this level output cannot export RS232 standard negative level (logical zero), and 0V level can only be exported, but interface iSCSI receiving end selection can be monitored in RS232, if output level is not higher than 3.3V, default The level received is exactly logic 1, and then realizes logical transition.

Optionally, when electrical level transferring chip 330 is M74HCT86 chip, if serial ports monitoring device further includes that the first monitoring is opened Pass 430 and the second listening key 440, the first monitoring interface 410 are used to connect in the first data sending terminal 311 of monitoring with the second data Communication data between receiving end 322；Second monitors interface 420 sends for monitoring the first data sending terminal 311 and the second data Communication data between end 321, the then connection type of itself and M74HCT86 chip are as follows: the first listening key 430 is linked into the Between one data sending terminal 311 and the first conditioning circuit, by the second listening key 440 be linked into the first data sending terminal 311 with Between second conditioning circuit.

Optionally, the utility model embodiment additionally provides a kind of serial ports monitoring system, the string including above-mentioned first aspect Mouth monitoring device.It should be noted that the part serial ports monitoring device basic principle and generation technical effect with it is aforementioned right The explanation of serial ports monitoring device is identical, to briefly describe, does not refer to part in the present embodiment, can refer in above-mentioned corresponding embodiment Corresponding contents.

It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.It should be noted that To: similar label and letter indicate similar terms in following attached drawing, therefore, once determined in a certain Xiang Yi attached drawing Justice does not need then that it is further defined and explained in subsequent attached drawing.The foregoing is merely the excellent of the utility model Embodiment is selected, is not intended to limit the utility model, for those skilled in the art, the utility model can have Various modifications and variations.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of serial ports monitoring device, be applied to multiple electronic equipments, multiple electronic equipments include the first electronic equipment and It is respectively equipped with first serial and second serial on second electronic equipment, first electronic equipment and second electronic equipment, It is characterized in that, the serial ports monitoring device includes: the power circuit being electrically connected to each other, level shifting circuit and monitoring interface；

The power circuit is serial ports monitoring device power supply；

The level shifting circuit includes the first data port, the second data port, electrical level transferring chip and single-pole double-throw switch (SPDT)；

The first serial of one end of first data port and first electronic equipment communicates to connect, second data terminal One end of mouth and the second serial of second electronic equipment communicate to connect, first data port and second data terminal The other end of mouth is electrically connected with the electrical level transferring chip respectively；

One end of the single-pole double-throw switch (SPDT) is electrically connected with the electrical level transferring chip, another termination of the single-pole double-throw switch (SPDT) Ground, the first fiduciary level for will communicate between the first data port and the second data port are exported to the level conversion core Piece；

The electrical level transferring chip is used to the first fiduciary level being converted into corresponding second fiduciary level of the monitoring interface；

The monitoring interface is used for after first fiduciary level is converted into the second fiduciary level, monitors the first serial Communication data between the second serial.

2. serial ports monitoring device according to claim 1, which is characterized in that first data port includes the first data Transmitting terminal and the first data receiver, second data port include the second data sending terminal and the second data receiver；

First data sending terminal is used to the communication data of the first serial being sent to second data receiver；

Second data sending terminal is used to the communication data of the second serial being sent to first data receiver.

3. serial ports monitoring device according to claim 2, which is characterized in that the monitoring interface includes the first monitoring interface Interface is monitored with second；

Described first, which monitors interface, is used to monitor leading between first data sending terminal and second data receiver Letter data；

The second monitoring interface is used to monitor the communication between first data receiver and second data sending terminal Data.

4. serial ports monitoring device according to claim 3, which is characterized in that further include that the first listening key and second are monitored Switch；

One end of first listening key is electrically connected with first data sending terminal, the other end and the electrical level transferring chip Electrical connection；

One end of second listening key is electrically connected with first data receiver, the other end and the electrical level transferring chip Electrical connection.

5. serial ports monitoring device according to claim 1, which is characterized in that first fiduciary level be Transistor-Transistor Logic level or RS232 level.

6. serial ports monitoring device according to claim 1, which is characterized in that the monitoring interface is RS232 interface, described Monitoring corresponding second fiduciary level of interface is RS232 level.

7. serial ports monitoring device according to claim 1, which is characterized in that first data port and second number It is winding displacement stand according to port.

8. serial ports monitoring device according to claim 7, which is characterized in that the winding displacement stand includes multiple.

9. serial ports monitoring device according to claim 1, which is characterized in that the electrical level transferring chip is M74HCT86 core Piece.

10. a kind of serial ports monitoring system, which is characterized in that including the described in any item serial ports monitoring devices of such as claim 1-9.