Deconcentrator, communication diagnosis circuit and communication diagnosis equipment

Abstract

The embodiment of the utility model discloses a deconcentrator, a communication diagnosis circuit and communication diagnosis equipment, and belongs to the technical field of communication testing. The deconcentrator comprises a male head, a first female head, a second female head and a single-pole double-throw switch; each of the male head, the first female head and the second female head comprises a preset number of interfaces; the interface corresponding to the male joint comprises a first grounding end, a first receiving end and a first sending end, the interface corresponding to the first female joint comprises a second grounding end, a second receiving end and a second sending end, and the interface corresponding to the second female joint comprises a third grounding end, a third receiving end and a third sending end; the first receiving end is connected with the second transmitting end, and the first transmitting end is connected with the second receiving end; the input end of the single-pole double-throw switch is connected with the first receiving end, the first output end of the single-pole double-throw switch is connected with the third receiving end, and the second output end of the single-pole double-throw switch is connected with the third transmitting end. The deconcentrator is tested and diagnosed through the male head, the first female head and the second female head, and the communication test and diagnosis efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication testing, in particular to a line splitter, a communication diagnosis circuit and a communication diagnosis device. BACKGROUND

[0002] With the rapid development of communication technology, RS (Recommended Standard)-232 communication is widely used as a serial binary data exchange interface technology standard between data terminal equipment and data communication equipment. In the existing RS-232 communication test and diagnosis scene, multiple devices need to be connected to the same serial port for data monitoring or function switching. However, the Y-shaped line splitter on the market can only realize point-to-multipoint data broadcasting, and the independent serial port monitor can only indicate the signal state.

[0003] Since the cross adapter can only realize fixed line conversion, it is necessary for technicians to use multiple independent devices in series to meet the needs of data splitting, state monitoring and line mode switching, resulting in complex RS-232 communication test and diagnosis wiring, more fault points and further affecting the efficiency of communication testing and diagnosis. In addition, the switching of the working mode of the device needs to interrupt the communication, physically plug and unplug the cable and change the adapter, and the scene that needs to be frequently switched further leads to low efficiency of communication testing and diagnosis. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a line splitter, a communication diagnosis circuit and a communication diagnosis device to solve the problem of low efficiency of communication testing and diagnosis.

[0005] In order to achieve the above-mentioned purpose, in the first aspect, the present application provides a line splitter, which comprises a male head, a first female head, a second female head and a single-pole double-throw switch.

[0006] The male head, the first female head and the second female head each comprise a predetermined number of interfaces, and the interfaces corresponding to the male head are all pins, and the interfaces corresponding to the first female head and the second female head are all holes, wherein the male head is the main input interface of the main device, and the first female head and the second female head are the slave output interfaces of the measured slave device.

[0007] The interfaces corresponding to the male head comprise a first ground terminal, a first receiving terminal and a first sending terminal, the interfaces corresponding to the first female head comprise a second ground terminal, a second receiving terminal and a second sending terminal, and the interfaces corresponding to the second female head comprise a third ground terminal, a third receiving terminal and a third sending terminal.

[0008] The first receiving terminal is connected to the second sending terminal, the first sending terminal is connected to the second receiving terminal, and the second ground terminal and the third ground terminal are both connected to the first ground terminal.

[0009] The input end of the single-pole double-throw switch is connected with the first receiving end, the first output end of the single-pole double-throw switch is connected with the third receiving end, and the second output end of the single-pole double-throw switch is connected with the third sending end.

[0010] In the embodiment of the application, the wire distributor further comprises a first indication circuit and a second indication circuit.

[0011] The first receiving end is connected with the first indication circuit, and the first sending end is connected with the second indication circuit.

[0012] In the embodiment of the application, the first indication circuit comprises a first light-emitting diode and a first triode, and the second indication circuit comprises a second light-emitting diode and a second triode.

[0013] The base of the first triode is connected with the first receiving end, and the collector of the first triode is connected with the cathode of the first light-emitting diode.

[0014] The base of the second triode is connected with the first sending end, and the collector of the second triode is connected with the cathode of the second light-emitting diode.

[0015] The emitter of the first triode and the emitter of the second triode are both grounded.

[0016] In the embodiment of the application, the wire distributor further comprises a power supply.

[0017] The anode of the first light-emitting diode and the anode of the second light-emitting diode are both connected with the positive pole of the power supply.

[0018] The first ground end, the second ground end and the third ground end are all connected with the negative pole of the power supply, and the negative pole of the power supply is grounded.

[0019] In the embodiment of the application, the first indication circuit further comprises a first current-limiting resistor.

[0020] The positive pole of the power supply is connected with the anode of the first light-emitting diode through the first current-limiting resistor.

[0021] In the embodiment of the application, the second indication circuit further comprises a second current-limiting resistor.

[0022] The positive pole of the power supply is connected with the anode of the second light-emitting diode through the second current-limiting resistor.

[0023] In the embodiment of the application, the first indication circuit further comprises a first high-resistance base resistor.

[0024] The base of the first triode is connected with the first receiving end through the first high-resistance base resistor.

[0025] In the embodiment of the application, the second indication circuit further comprises a second high-resistance base resistor.

[0026] The base of the second triode is connected to the first sending end through a second high-resistance base resistor.

[0027] In a second aspect, the application provides a communication diagnosis circuit, comprising the splitter.

[0028] In a third aspect, the application provides a communication diagnosis device, comprising a master device, a first slave device, a second slave device and the splitter.

[0029] The master device is connected to a male head, the first slave device is connected to a first female head, and the second slave device is connected to a second female head.

[0030] The application provides a splitter, comprising a male head, a first female head, a second female head and a single-pole double-throw switch; the male head, the first female head and the second female head each comprise a preset number of interfaces, and the interfaces corresponding to the male head are all pins, and the interfaces corresponding to the first female head and the second female head are all holes; the interfaces corresponding to the male head comprise a first ground end, a first receiving end and a first sending end, the interfaces corresponding to the first female head comprise a second ground end, a second receiving end and a second sending end, and the interfaces corresponding to the second female head comprise a third ground end, a third receiving end and a third sending end; the first receiving end is connected to the second sending end, the first sending end is connected to the second receiving end, and the second ground end and the third ground end are both connected to the first ground end; the input end of the single-pole double-throw switch is connected to the first receiving end, the first output end of the single-pole double-throw switch is connected to the third receiving end, and the second output end of the single-pole double-throw switch is connected to the third sending end. The compact splitter is realized through the male head, the first female head and the second female head to perform serial port testing and diagnosis, replacing the combination of a Y-shaped line, a serial port monitor and a cross adapter in the existing RS-232 communication testing and diagnosis scene, simplifying the field wiring process, and thus improving the communication testing and diagnosis efficiency. The electrical connection can be switched between the "direct connection" mode and the "cross" mode in an instant by turning the single-pole double-throw switch, the operation is intuitive and reliable, the debugging flexibility and the work efficiency are greatly improved, and thus the communication testing and diagnosis efficiency is improved.

[0031] Other features and advantages of the embodiments of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings are included to provide a further understanding of the embodiments of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the drawings:

[0033] Figure 1 A first structure schematic diagram of a splitter provided by an embodiment of the application is shown;

[0034] Figure 2 A second structure schematic diagram of a splitter provided by an embodiment of the application is shown.

[0035] Reference Signs List

[0036] 100-splitter, 110-male, 120-first female, 130-second female; SPTD-single pole double throw switch, LED1-first light emitting diode, LED2-second light emitting diode, Q1-first triode, Q2-second triode, DC-power supply, R1-first current-limiting resistor, R2-second current-limiting resistor, R3-first high-value base resistor, R4-second high-value base resistor; RX1-first receiving end, RX2-second receiving end, RX3-third receiving end, TX1-first sending end, TX2-second sending end, TX3-third sending end, GND1-first ground end, GND2-second ground end, GND3-third ground end. DETAILED DESCRIPTION

[0037] The specific embodiments of the present application will be described hereinafter with reference to the drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the scope of the present application.

[0038] The components of the present application, which are generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Therefore, the following detailed description of the embodiments of the present application, as represented in the figures, is not intended to limit the scope of the application, but is merely representative of selected embodiments of the application. All other embodiments not explicitly described or shown herein are intended to be within the scope of the present application.

[0039] Hereinafter, the terms "include", "have", and their conjugates, which are used in various embodiments of the present application, merely indicate the presence of the features, numbers, steps, operations, elements, components, or combinations thereof, and do not exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0040] In addition, the terms "first", "second", "third", and the like, are used only to distinguish the description, and cannot be understood as indicating or implying a relative importance.

[0041] Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present application belong. Such terms, as commonly used in the art, shall be interpreted the same as those terms are interpreted in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined in the various embodiments of the present application.

[0042] Referring to Figure 1 , Figure 1 A first structure diagram of a line splitter is shown.

[0043] The line splitter 100 includes a male head 110, a first female head 120, a second female head 130, and a single-pole double-throw switch SPTD.

[0044] The male head 110, the first female head 120, and the second female head 130 each include a preset number of interfaces, and the interfaces corresponding to the male head 110 are all pins, and the interfaces corresponding to the first female head 120 and the second female head 130 are all holes.

[0045] The interfaces corresponding to the male head 110 include a first ground end GND1, a first receiving end RX1, and a first sending end TX1, the interfaces corresponding to the first female head 120 include a second ground end GND2, a second receiving end RX2, and a second sending end TX2, and the interfaces corresponding to the second female head 130 include a third ground end GND3, a third receiving end RX3, and a third sending end TX3.

[0046] The first receiving end RX1 is connected to the second sending end TX2, the first sending end TX1 is connected to the second receiving end RX2, and the second ground end GND2 and the third ground end GND3 are both connected to the first ground end GND1.

[0047] The input end of the single-pole double-throw switch SPTD is connected to the first receiving end RX1, the first output end of the single-pole double-throw switch SPTD is connected to the third receiving end RX3, and the second output end of the single-pole double-throw switch SPTD is connected to the third sending end TX3.

[0048] The splitter 100 comprises a male head 110, a first female head 120, a second female head 130 and a single-pole double-throw switch SPTD. The types of the male head 110, the first female head 120 and the second female head 130 are set according to actual needs, which are not limited herein. For ease of understanding, the male head 110, the first female head 120 and the second female head 130 in the embodiments of the present application are all DB9 (D-subminiature, D-type connector) interfaces. The male head 110 is a DB9 male head 110, comprising nine pin-type interfaces. The first female head 120 and the second female head 130 are DB9 female heads, comprising nine hole-type interfaces.

[0049] The interfaces corresponding to the male head 110 comprise a first ground end GND1, a first receiving end RX1 and a first sending end TX1, the interfaces corresponding to the first female head 120 comprise a second ground end GND2, a second receiving end RX2 and a second sending end TX2, and the interfaces corresponding to the second female head 130 comprise a third ground end GND3, a third receiving end RX3 and a third sending end TX3. The first receiving end RX1 is connected to the second sending end TX2, the first sending end TX1 is connected to the second receiving end RX2, and the second ground end GND2 and the third ground end GND3 are both connected to the first ground end GND1. In the scene of testing and diagnosis based on RS-232 communication, the male head 110 serves as the main input interface of the master device, and the first female head 120 and the second female head 130 serve as the slave output interfaces of the measured slave device. The compact splitter 100 is realized through the male head 110, the first female head 120 and the second female head 130 to perform serial port testing and diagnosis, replacing the combination of Y-type wires, serial port monitors and cross-over adapters in the existing scene of RS-232 communication testing and diagnosis, simplifying the field wiring process, and thus improving the efficiency of communication testing and diagnosis.

[0050] In the scene of RS-232 communication testing and diagnosis, it is usually required to connect the master device and at least one measured slave device to the same serial port for data monitoring or mode switching. In the debugging process, the working mode of the measured slave device needs to be switched from the data monitoring of the direct connection line sequence to the cross interconnection, which requires interrupting the communication, physically plugging and unplugging the cable and replacing the adapter. The scene requiring frequent switching leads to low efficiency of communication testing and diagnosis, and is prone to cause damage to the device or connection errors due to misoperation.

[0051] The single-pole double-throw switch SPTD is integrated in the distribution unit 100 in the embodiment of the present application. The input end of the single-pole double-throw switch SPTD is connected to the first receiving end RX1, the first output end of the single-pole double-throw switch SPTD is connected to the third receiving end RX3, and the second output end of the single-pole double-throw switch SPTD is connected to the third transmitting end TX3. The function of the second female head 130 is switched through the single-pole double-throw switch SPTD, and thus in the working mode switching process, any physical connection does not need to be disconnected. The electrical connection can be switched between the "direct connection" and the "cross connection" modes in an instant by toggling the single-pole double-throw switch SPTD, the operation is intuitive and reliable, the debugging flexibility and the working efficiency are greatly improved, and thus the communication test and diagnosis efficiency is improved.

[0052] In the embodiment of the present application, the distribution unit 100 further comprises a first indication circuit and a second indication circuit.

[0053] The first receiving end RX1 is connected to the first indication circuit, and the first transmitting end TX1 is connected to the second indication circuit.

[0054] Please refer to Figure 2 , Figure 2 A second structural schematic diagram of the distribution unit provided by the embodiment of the present application is shown.

[0055] As shown in the figure, the male head 110, the first female head 120 and the second female head 130 each comprise nine interfaces, which are respectively marked as 1 to 9 in the figure. The fifth interfaces of the male head 110, the first female head 120 and the second female head 130 are all ground ends, that is, the fifth interface of the male head 110 is the first ground end GND1, the fifth interface of the first female head 120 is the second ground end GND2, and the fifth interface of the second female head 130 is the third ground end GND3. The second interface of the male head 110 is RXD (Receive Xxternal Data, receive data pin), which is the first receiving end RX1 in the embodiment. The third interface of the male head 110 is TXD (Transmit Data, transmit data pin), which is the first transmitting end TX1 in the embodiment.

[0056] The second interface of the first female head 120 is TXD, which is the second transmitting end TX2 in the embodiment. The third interface of the first female head 120 is RXD, which is the second receiving end RX2 in the embodiment. The second interface of the second female head 130 is TXD, which is the third transmitting end TX3 in the embodiment. The third interface of the second female head 130 is RXD, which is the third receiving end RX3 in the embodiment. According to the switch position of the single-pole double-throw switch SPTD, the data is received to RXD or transmitted to TXD, and thus the interface working mode is switched between the "direct connection" and the "cross connection" without changing the physical connection.

[0057] The splitter 100 further comprises a first indication circuit and a second indication circuit. The first receiving end RX1 is connected to the first indication circuit, and the first sending end TX1 is connected to the second indication circuit. Through the process monitoring of the first indication circuit and the second indication circuit, the communication test and diagnosis in the industrial field or outdoor environment can be adapted.

[0058] In the embodiment of the present application, the first indication circuit comprises a first light emitting diode LED1 and a first triode Q1, and the second indication circuit comprises a second light emitting diode LED2 and a second triode Q2.

[0059] The base of the first triode Q1 is connected to the first receiving end RX1, and the collector of the first triode Q1 is connected to the cathode of the first light emitting diode LED1.

[0060] The base of the second triode Q2 is connected to the first sending end TX1, and the collector of the second triode Q2 is connected to the cathode of the second light emitting diode LED2.

[0061] The emitter of the first triode Q1 and the emitter of the second triode Q2 are both grounded.

[0062] The light emitting colors of the first light emitting diode LED1 and the second light emitting diode LED2 are set according to the requirements, which are not limited herein. For the convenience of understanding, in the embodiment of the present application, the light emitting color of the first light emitting diode LED1 is green, and the light emitting color of the second light emitting diode LED2 is red. Through the light emitting state of the first light emitting diode LED1, the data sent by the master device is monitored. Through the light emitting state of the second light emitting diode LED2, the data received by the master device is monitored.

[0063] After the signal enters the splitter 100, the signal of the first receiving end RX1 is divided into three paths, the first path is connected to the second sending end TX2 of the first female head 120, the second path is the input end of the single-pole double-throw switch SPTD, and the third path is the first indication circuit, so as to monitor through the light emitting state of the first light emitting diode LED1 in the first indication circuit.

[0064] After the signal enters the splitter 100, the signal of the first sending end TX1 is divided into two paths, the first path is connected to the second receiving end RX2 of the second female head 130, and the second path is the second indication circuit, so as to monitor through the light emitting state of the second light emitting diode LED2 in the second indication circuit.

[0065] In the embodiment of the present application, the splitter 100 further comprises a power supply DC.

[0066] The anode of the first light emitting diode LED1 and the anode of the second light emitting diode LED2 are both connected to the positive electrode of the power supply DC.

[0067] The first ground terminal GND1, the second ground terminal GND2 and the third ground terminal GND3 are connected to the negative pole of the power supply DC, and the negative pole of the power supply DC is grounded.

[0068] In order to perform communication testing and diagnosis based on a unified potential reference point, the second ground terminal GND2 and the third ground terminal GND3 are connected to the first ground terminal GND1 in the embodiment. The anode of the first light-emitting diode LED1 and the anode of the second light-emitting diode LED2 are connected to the positive pole of the power supply DC. The first ground terminal GND1, the second ground terminal GND2 and the third ground terminal GND3 are connected to the negative pole of the power supply DC, and the negative pole of the power supply DC is grounded. The first ground terminal GND1 of the male head 110, the second ground terminal GND2 of the first female head 120 and the third ground terminal GND3 of the second female head 130 are connected to the negative pole of the power supply DC. All the ground lines including the first ground terminal GND1, the second ground terminal GND2 and the third ground terminal GND3 are connected together to form a unique system common ground, thereby ensuring that the first indication circuit and the second indication circuit can correctly respond to signal voltage changes.

[0069] In the embodiment of the application, the first indication circuit further comprises a first current-limiting resistor R1.

[0070] The positive pole of the power supply DC is connected to the anode of the first light-emitting diode LED1 through the first current-limiting resistor R1.

[0071] The types of the first transistor Q1 and the second transistor Q2 are set according to actual needs, and are not limited herein. For ease of understanding, in the embodiment of the application, the first transistor Q1 and the second transistor Q2 are both NPN (Negative-Positive-Negative) transistors. The first indication circuit further comprises a first current-limiting resistor R1. In the case where the first transistor Q1 is turned on, the positive pole of the power supply DC is connected to the anode of the first light-emitting diode LED1 through the first current-limiting resistor R1. The current passes through the first current-limiting resistor R1 and the first light-emitting diode LED1, and then flows to the ground line through the first transistor Q1, thereby driving the first light-emitting diode LED1 to emit light.

[0072] In the embodiment of the application, the second indication circuit further comprises a second current-limiting resistor R2.

[0073] The positive pole of the power supply DC is connected to the anode of the second light-emitting diode LED2 through the second current-limiting resistor R2.

[0074] The second indicating circuit further comprises a second current-limiting resistor R2. In the case that the second transistor Q2 is turned on, the positive pole of the power supply DC is connected to the anode of the second light-emitting diode LED2 through the second current-limiting resistor R2. The current flows through the second current-limiting resistor R2 and the second light-emitting diode LED2, and then flows to the ground through the second transistor Q2, so as to drive the second light-emitting diode LED2 to emit light. The resistance values of the first current-limiting resistor R1 and the second current-limiting resistor R2 are set according to actual needs, which are not limited here. For the convenience of understanding, the resistance values of the first current-limiting resistor R1 and the second current-limiting resistor R2 in the embodiment of the application are both 330 ohms.

[0075] In the embodiment of the application, the first indicating circuit further comprises a first high-resistance base resistor R3.

[0076] The base of the first transistor Q1 is connected to the first receiving end RX1 through the first high-resistance base resistor R3.

[0077] The first indicating circuit further comprises the first high-resistance base resistor R3. When a positive voltage pulse appears on the monitored RS-232 signal line, the base of the first transistor Q1 is connected to the first receiving end RX1 through the first high-resistance base resistor R3, so that the signal provides a weak trigger current to the base of the first transistor Q1 through the first high-resistance base resistor R3, and the first transistor Q1 is turned on. After the first transistor Q1 is turned on, a low-resistance circuit from the collector to the emitter is formed, and then the first light-emitting diode LED1 is driven to emit light.

[0078] In the embodiment of the application, the second indicating circuit further comprises a second high-resistance base resistor R4.

[0079] The base of the second transistor Q2 is connected to the first sending end TX1 through the second high-resistance base resistor R4.

[0080] The second indicating circuit further comprises the second high-resistance base resistor R4. When a pulse appears on the monitored RS-232 signal line, the base of the second transistor Q2 is connected to the first sending end TX1 through the second high-resistance base resistor R4, so that the signal provides a weak trigger current to the base of the second transistor Q2 through the second high-resistance base resistor R4, and the second transistor Q2 is turned on. After the second transistor Q2 is turned on, a low-resistance circuit from the collector to the emitter is formed, and then the second light-emitting diode LED2 is driven to emit light.

[0081] The first indicating circuit and the second indicating circuit in the embodiment adopt the same design, are powered by an external power supply DC, and are driven by the first transistor Q1 and the second transistor Q2 as electronic switches, utilize the switching characteristics of the transistors to drive the first light-emitting diode LED1 and the second light-emitting diode LED2 to realize high-brightness indication, and adapt to the monitoring of different industrial environments. The sampling of the signal is completed through the first high-resistance base resistor R3 and the second high-resistance base resistor R4, high input impedance is realized, the design ensures that the interference on the original communication signal is minimized, and the normal conduction of the communication link is not affected when not powered.

[0082] The embodiment of the application also provides a communication diagnosis circuit, comprising the splitter 100.

[0083] The splitter 100 comprises a male head 110, a first female head 120, a second female head 130 and a single-pole double-throw switch SPTD. The compact splitter 100 is realized through the male head 110, the first female head 120 and the second female head 130 to realize serial port testing and diagnosis, replaces the combination of a Y-shaped line, a serial port monitor and a cross adapter in the existing RS-232 communication testing and diagnosis scene, simplifies the field wiring process, and thus improves the communication testing and diagnosis efficiency. The electrical connection can be switched between the "direct connection" mode and the "cross" mode in an instant by turning the single-pole double-throw switch SPTD, the operation is intuitive and reliable, the debugging flexibility and the work efficiency are greatly improved, and thus the communication testing and diagnosis efficiency is improved.

[0084] The embodiment of the application also provides a communication diagnosis device, comprising a master device, a first slave device to be tested, a second slave device to be tested and the splitter 100.

[0085] The master device is connected with the male head 110, the first slave device is connected with the first female head 120, and the second slave device is connected with the second female head 130.

[0086] Generally, in the test and diagnosis scene of existing RS-232 communication, multiple devices need to be connected to the same serial port for data monitoring or function switching. In the embodiment, the multiple devices include a master device, a first slave device and a second slave device, the master device is connected to the male head 110, the first slave device is connected to the first female head 120, and the second slave device is connected to the second female head 130. The integrated design of the splitter 100 greatly reduces the physical connection points and significantly reduces the failure probability caused by poor contact. In the embodiment, the male head 110, the first female head 120 and the second female head 130 are all designed based on the common RXD, TXD and GND three-wire design, and have strong device compatibility. Since the first indication circuit and the second indication circuit adopt high-impedance sampling design, they are non-intrusive to the signal link. Even in the case that the first light-emitting diode LED1 and the second light-emitting diode do not work due to the non-connection of external power supply DC, the data shunting and switching functions of the communication diagnosis device can still be completely normally used, which does not affect the core serial communication and has excellent fault tolerance capability.

[0087] It should also be noted that the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusions, such that a process, method, article or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0088] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A wire distributor, characterized by The splitter comprises a male head, a first female head, a second female head and a single-pole double-throw switch; The male head, the first female head and the second female head each comprise a preset number of interfaces, and the interfaces corresponding to the male head are pins, and the interfaces corresponding to the first female head and the second female head are holes, wherein the male head serves as a master input interface of a master device, and the first female head and the second female head serve as slave output interfaces of slave devices; The interfaces corresponding to the male head comprise a first ground terminal, a first receiving terminal and a first sending terminal, the interfaces corresponding to the first female head comprise a second ground terminal, a second receiving terminal and a second sending terminal, and the interfaces corresponding to the second female head comprise a third ground terminal, a third receiving terminal and a third sending terminal; The first receiving terminal is connected to the second sending terminal, the first sending terminal is connected to the second receiving terminal, and the second ground terminal and the third ground terminal are both connected to the first ground terminal; An input end of the single-pole double-throw switch is connected to the first receiving terminal, a first output end of the single-pole double-throw switch is connected to the third receiving terminal, and a second output end of the single-pole double-throw switch is connected to the third sending terminal.

2. The power splitter of claim 1, wherein, The splitter further comprises a first indication circuit and a second indication circuit; The first receiving terminal is connected to the first indication circuit, and the first sending terminal is connected to the second indication circuit.

3. The power splitter of claim 2, wherein, The first indication circuit comprises a first light-emitting diode and a first triode, and the second indication circuit comprises a second light-emitting diode and a second triode; A base of the first triode is connected to the first receiving terminal, and a collector of the first triode is connected to a cathode of the first light-emitting diode; A base of the second triode is connected to the first sending terminal, and a collector of the second triode is connected to a cathode of the second light-emitting diode; An anode of the first light-emitting diode and an anode of the second light-emitting diode are both connected to a positive pole of the power supply; 4. The tap of claim 3, wherein, The first ground terminal, the second ground terminal and the third ground terminal are all connected to a negative pole of the power supply, and the negative pole of the power supply is grounded. The first indication circuit further comprises a first current-limiting resistor; The positive pole of the power supply is connected to the anode of the first light-emitting diode through the first current-limiting resistor.

5. The tap of claim 4, wherein, The second indication circuit further comprises a second current-limiting resistor; The positive pole of the power supply is connected to the anode of the second light-emitting diode through the second current-limiting resistor.

6. The tap of claim 4, wherein, The first indication circuit further comprises a first high-resistance base resistor; The base of the first triode is connected to the first receiving terminal through the first high-resistance base resistor.

7. The tap defined in Claim 3 wherein, The second indication circuit further comprises a second high-resistance base resistor; The base of the second triode is connected to the first sending terminal through the second high-resistance base resistor.

8. The tap of claim 3, wherein, The splitter of any one of claims 1 to 8 is included. A master device, a first slave device, a second slave device and the splitter of any one of claims 1 to 8 are included; 9. A communication diagnostic circuit, characterized by The master device is connected to the male head, the first slave device is connected to the first female head, and the second slave device is connected to the second female head.

10. A communication diagnosing apparatus characterized by comprising: ​ ​

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