Multipurpose data converter

Abstract

The utility model relates to a multipurpose data converter, and belongs to the technical field of communication. The converter comprises two jumper caps which are used for short-circuiting two adjacent pins of a jumper connector; a receiving data connecting piece of the first DB9 interface is connected with a middle pin of the first jumper connector, a transmission data connecting piece is connected with a middle pin of the second jumper connector, a request sending connecting piece is connected with a request sending connecting piece of the second DB9 interface, and an elimination sending connecting piece is connected with an elimination sending connecting piece of the second DB9 interface; a data receiving connecting piece of the second DB9 interface is connected with a pin adjacent to the middle pin of the first jumper connector and a pin adjacent to the middle pin of the second jumper connector. And a transmission data connecting piece of the second DB9 interface is respectively connected with the other pin adjacent to the middle pin of the first jumper connector and the other pin adjacent to the middle pin of the second jumper connector. According to the utility model, the occurrence of misconnection or refusing connection can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a multipurpose data converter belongs to communication technical field. BACKGROUND

[0002] D type data interface connector is used for connecting the interface of electronic equipment, because it is similar to English letter "D", so it is named D type interface. According to the number of pins in the interface, D type data interface can be subdivided into DA type (15 pins), DB type (25 pins), DC type (37 pins), DD type (50 pins) and DE type (9 pins).

[0003] Common computer parallel port is DB25 pin connector, and computer serial port is DE9 pin connector. Since the serial port and parallel port of early computer are both using DB25 pin connector, people are used to write down the letter B and D together as the common name of D type interface, so that after the computer serial port uses 9 pin interface, people more use DB9 than DE9 to call 9 pin D type interface. DB9 interface has two types, one is "male", and the other is "female". So-called "male" is that the plastic base is installed with the metal pin, and vice versa "female" is installed with the embedded metal socket on the plastic base.

[0004] DB9 interface is usually used as a communication connector, when the debugging personnel need to debug or install two communication devices, the DB9 interfaces on the two communication devices can be the same type or different type. When the DB9 interfaces on the two communication devices are different types: if the two communication devices are full duplex RS232 communication, then the 2nd pin (i.e. receiving data pin) and the 3rd pin (i.e. transmitting data pin) of the DB9 interfaces on both sides need to be cross connected; if the two communication devices are half duplex RS485 communication, then the 3rd pin and the 8th pin (i.e. clear to send pin) of the DB9 interfaces on both sides are directly connected; if the two communication devices are CAN communication, then the 2nd pin and the 7th pin (i.e. request to send pin) of the DB9 interfaces on both sides are directly connected.

[0005] Therefore, DB9 interface has the defect that it cannot realize RS232, RS485 and CAN communication. When the DB9 interfaces on the two communication devices are the same type, the two communication devices cannot be directly connected, and engineers need to manually weld two DB9 interfaces opposite to the type of the DB interface on the communication device to ensure that the two communication devices can be successfully connected. However, this process is not only time-consuming and tedious, but also the reliability of the adapter wire welded is very low.

[0006] The utility model discloses a novel DB9 interface conversion head. The utility model provides a novel DB9 interface conversion head, including needle type DB9 interface, hole type 0B9 interface, installation shell and the 9 position dial switch of electricity between needle type DB9 interface and hole type DB9 interface, needle type DB9 interface and hole type DB9 interface are arranged at the both ends of installation shell respectively, and the 9 position dial switch is arranged on one lateral wall of installation shell, and when the 9 position dial switch is all closed, the 1-9 pin of needle type DB9 interface is electrically connected with the 1-9 pin of hole type DB9 interface one by one. The utility model provides a novel DB9 interface conversion head, and the 9 position dial switch or further sets up 2 position dial switch and realizes the conversion of the inner core function of standard COM line in the middle of two DB9 interfaces, and thus can realize the purpose of one line instead of N lines.

[0007] However, long-time use of the dial switch to change the connection relationship between the two DB interfaces will cause the service life of the dial switch to be reduced, and thus misconnection or disconnection is prone to occur, resulting in damage to the communication equipment. Utility model content

[0008] The utility model aims at providing a multipurpose data converter to solve the problem of misconnection or disconnection of the DB9 interface conversion head in the prior art.

[0009] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0010] The utility model provides a multipurpose data converter, which comprises a first DB9 interface, a second DB9 interface, a first jumper plug, a second jumper plug, a first jumper cap for short-circuiting adjacent two pins of the first jumper plug, and a second jumper cap for short-circuiting adjacent two pins of the second jumper plug.

[0011] The receiving data connector of the first DB9 interface is connected to the middle pin of the first jumper plug, and the transmission data connector of the first DB9 interface is connected to the middle pin of the second jumper plug.

[0012] The receiving data connector of the second DB9 interface is connected to one pin adjacent to the middle pin of the first jumper plug and one pin adjacent to the middle pin of the second jumper plug, and the transmission data connector of the second DB9 interface is connected to the other pin adjacent to the middle pin of the first jumper plug and the other pin adjacent to the middle pin of the second jumper plug.

[0013] The request sending connector of the first DB9 interface is connected to the request sending connector of the second DB9 interface.

[0014] The elimination sending connector of the first DB9 interface is connected to the elimination sending connector of the second DB9 interface.

[0015] Further, the first jumper connector and the second jumper connector are all three-pin connectors; the second pin of the three-pin connector is a middle pin, and the first pin and the third pin of the three-pin connector are two pins adjacent to the second pin;

[0016] The receiving data connection of the first DB9 interface is connected to the second pin of the first jumper connector, and the transmitting data connection of the first DB9 interface is connected to the second pin of the second jumper connector.

[0017] The receiving data connection of the second DB9 interface is connected to the third pin of the first jumper connector and the first pin of the second jumper connector respectively, and the transmitting data connection of the second DB9 interface is connected to the first pin of the first jumper connector and the third pin of the second jumper connector respectively.

[0018] Further, a terminal resistor for improving signal quality is further included, one end of which is connected to the transmitting data connection of the first DB9 interface, and the other end of which is connected to the request sending connection of the first DB9 interface.

[0019] Further, a switch for controlling the terminal resistor to be put into or cut out of the circuit is connected in series on the branch where the terminal resistor is located.

[0020] Further, the switch is a DIP switch.

[0021] Further, the resistance value of the terminal resistor is 120 ohms.

[0022] Further, the first jumper connector and the second jumper connector are welded on the printed circuit board.

[0023] The first DB9 interface and the second DB9 interface are both welded on the printed circuit board through pins.

[0024] The connection between the connections of the first DB9 interface and the second DB9 interface and the pins of the first jumper connector and the second jumper connector is realized through the printed circuit on the printed circuit board.

[0025] Further, the first DB9 interface is a male DB9 interface, and the second DB9 interface is a female DB9 interface.

[0026] Further, the first DB9 interface and the second DB9 interface are both male DB9 interfaces.

[0027] Further, the first DB9 interface and the second DB9 interface are both female DB9 interfaces.

[0028] The utility model discloses a beneficial effect is: as the pioneering invention creation, the utility model provides a kind of multipurpose data converter, including first DB9 interface, second DB9 interface, first jumper plug-in, second jumper plug-in, first jump cap and second jump cap for the shorting jumper plug-in adjacent two needle feet;The middle needle foot of first jumper plug-in is connected by the receiving data connecting piece of first DB9 interface, and the middle needle foot of second jumper plug-in is connected by the transmission data connecting piece of first DB9 interface;The adjacent needle foot of the middle needle foot of first jumper plug-in and the adjacent needle foot of the middle needle foot of second jumper plug-in are connected respectively by the receiving data connecting piece of second DB9 interface, and the adjacent other needle foot of the middle needle foot of first jumper plug-in and the adjacent other needle foot of the middle needle foot of second jumper plug-in are connected respectively by the transmission data connecting piece of second DB9 interface;The request sending connecting piece of first DB9 interface is connected with the request sending connecting piece of second DB9 interface;The elimination sending connecting piece of first DB9 interface is connected with the elimination sending connecting piece of second DB9 interface.Compared with prior art, on the one hand, since the dial switch control connection between two DB9 interfaces is not needed, but the direct connection between two DB9 interfaces is used by using jump cap and plug-in, therefore, the occurrence of misconnection or rejection can be reduced;Second aspect, according to different communication needs, the adjacent two needle feet of first jumper plug-in are shorted using first jump cap, and the adjacent two needle feet of second jumper plug-in are shorted using second jump cap, and the flexibility is high, and the communication requirements of RS232, RS485 and CAN can be compatiblely realized;Third aspect, since the DB9 interface of first DB9 interface is matched with the DB9 interface of first communication device, and the DB9 interface of second DB9 interface is matched with the DB9 interface of second communication device, so the applicability is relatively high. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the electrical schematic diagram of the utility model provides a kind of multipurpose data converter;

[0030] Figure 2 It is the product structure schematic diagram of the utility model provides a kind of multipurpose data converter. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantage of the utility model more clear and explicit, the utility model is further explained in detail in connection with the drawings and examples.

[0032] The utility model discloses the conception is in: according to communication needs, the connection between two DB9 interfaces is changed by using jump cap and plug-in and the direct connection between two DB9 interfaces.

[0033] Specifically: the multipurpose data converter includes a first DB9 interface, a second DB9 interface, a first jumper connector, a second jumper connector, a first jumper cap and a second jumper cap for shorting two adjacent pins of the jumper connector; the receiving data connector of the first DB9 interface is connected to the middle pin of the first jumper connector, and the transmitting data connector of the first DB9 interface is connected to the middle pin of the second jumper connector; the receiving data connector of the second DB9 interface is connected to one pin adjacent to the middle pin of the first jumper connector and one pin adjacent to the middle pin of the second jumper connector, and the transmitting data connector of the second DB9 interface is connected to the other pin adjacent to the middle pin of the first jumper connector and the other pin adjacent to the middle pin of the second jumper connector; the request to send connector of the first DB9 interface is connected to the request to send connector of the second DB9 interface; and the clear to send connector of the first DB9 interface is connected to the clear to send connector of the second DB9 interface.

[0034] An embodiment of a multipurpose data converter:

[0035] Figure 1 is an electrical schematic diagram of a multipurpose data converter provided by the utility model, as Figure 1 shown, the multipurpose data converter includes: a first DB9 interface J1, a second DB9 interface J2, a first jumper connector CON1, a second jumper connector CON2, a first jumper cap (not shown) and a second jumper cap (not shown) for shorting two adjacent pins of the jumper connector.

[0036] The first DB9 interface J1 is matched with the DB9 interface of the first communication device, and the second DB9 interface J2 is matched with the DB9 interface of the second communication device.

[0037] When the DB9 interfaces on the two communication devices (namely, the A device and the B device) are of the same type, the first DB9 interface and the second DB9 interface in the multipurpose data converter need to be different from the type of the DB9 interfaces on the A device and the B device. For example, if the DB9 interfaces on the A device and the B device are both male DB9 interfaces, the first DB9 interface and the second DB9 interface in the multipurpose data converter are both female DB9 interfaces. For another example, if the DB9 interfaces on the A device and the B device are both female DB9 interfaces, the first DB9 interface and the second DB9 interface in the multipurpose data converter are both male DB9 interfaces. The multipurpose data converter with the first DB9 interface and the second DB9 interface being both female DB9 interfaces or both male DB9 interfaces is referred to as a different-type connector.

[0038] When the DB9 interfaces on the two communication devices are of different types, the first DB9 interface and the second DB9 interface in the multipurpose data converter need to match the types of the DB9 interfaces on the A device and the B device. For example, if the DB9 interface on the A device is a male type interface and the DB9 interface on the B device is a female type interface, one of the first DB9 interface and the second DB9 interface in the multipurpose data converter is a male type DB9 interface and the other is a female type DB9 interface, the female type DB9 interface in the multipurpose data converter is connected to the A device, and the male type DB9 interface in the multipurpose data converter is connected to the B device. For another example, if the DB9 interface on the A device is a female type interface and the DB9 interface on the B device is a female type interface, one of the first DB9 interface and the second DB9 interface in the multipurpose data converter is a male type DB9 interface and the other is a female type DB9 interface, the female type DB9 interface in the multipurpose data converter is connected to the B device, and the male type DB9 interface in the multipurpose data converter is connected to the A device. The multipurpose data converter with the interface types of the first DB9 interface and the second DB9 interface opposite to each other is referred to as a same type connector.

[0039] Whether the interface type of the first DB9 interface in the multipurpose data converter is the same as or different from the interface type of the second DB9 interface depends on the interface types of the DB9 interfaces on the two communication devices, and the present application does not specially limit the types of the first DB9 interface and the second DB9 interface, and the following is exemplarily described by taking the case that the interface types of the first DB9 interface and the second DB9 interface in the multipurpose data converter are different.

[0040] The first DB9 interface and the second DB9 interface each include a data communication device detection (DCD) connecting piece, a transmission data (TXD) connecting piece, a receiving data (RXD) connecting piece, a data terminal ready (DTR) connecting piece, a ground (GND) connecting piece, a data set ready (DSR) connecting piece, a request to send (RTS) connecting piece, a clear to send (CTS) connecting piece, and a ring indication (RI) connecting piece.

[0041] It can be understood that when the interface type of the DB9 interface is a male DB9 interface, the connecting pieces are pins, i.e. a communication device connection detection (DCD) pin, a transmission data (TXD) pin, a receiving data (RXD) pin, a data terminal ready (DTR) pin, a ground (GND) pin, a data set ready (DSR) pin, a request to send (RTS) pin, a clear to send (CTS) pin, and a ring indication (RI) pin. When the interface type of the DB9 interface is a female DB9 interface, the connecting pieces are sockets, i.e. a communication device connection detection (DCD) socket, a transmission data (TXD) socket, a receiving data (RXD) socket, a data terminal ready (DTR) socket, a ground (GND) socket, a data set ready (DSR) socket, a request to send (RTS) socket, a clear to send (CTS) socket, and a ring indication (RI) socket.

[0042] Specifically, the receiving data connecting piece J1-3 of the first DB9 interface J1 is connected to the middle pin of the first jumper connector CON1, and the transmission data connecting piece J1-2 of the first DB9 interface J1 is connected to the middle pin of the second jumper connector CON2; the receiving data connecting piece J2-3 of the second DB9 interface J2 is connected to one pin adjacent to the middle pin of the first jumper connector CON1 and one pin adjacent to the middle pin of the second jumper connector CON2, respectively; the transmission data connecting piece J2-2 of the second DB9 interface J2 is connected to the other pin adjacent to the middle pin of the first jumper connector CON1 and the other pin adjacent to the middle pin of the second jumper connector CON2, respectively; the request to send connecting piece J1-7 of the first DB9 interface J1 is connected to the request to send connecting piece J2-7 of the second DB9 interface J2; the clear to send connecting piece J1-8 of the first DB9 interface J1 is connected to the clear to send connecting piece J2-8 of the second DB9 interface J2; and the ground connecting piece J1-5 of the first DB9 interface J1 and the ground connecting piece J2-5 of the second DB9 interface J2 are both grounded GND.

[0043] As an optional implementation, the ground connecting piece J1-5 of the first DB9 interface J1 can be grounded GND together with the tenth connecting piece 10 and the eleventh connecting piece 11 of the metal shell of the first DB9 interface J1, and the ground connecting piece J2-5 of the second DB9 interface J2 can be grounded GND together with the tenth connecting piece 10 and the eleventh connecting piece 11 of the metal shell of the second DB9 interface J2.

[0044] The first jumper connector CON1 and the second jumper connector CON2 can be three-pin connectors, four-pin connectors, five-pin connectors, or the like, and the present application does not particularly limit this.

[0045] When the first jumper connector CON1 and the second jumper connector CON2 are both three-pin connectors, the second pin of the three-pin connector is the middle pin, and the first pin and the third pin of the three-pin connector are two pins adjacent to the second pin. Specifically, the receiving data connection J1-3 of the first DB9 interface J1 is connected to the second pin 2 of the first jumper connector CON1, and the transmitting data connection J1-2 of the first DB9 interface J1 is connected to the second pin 2 of the second jumper connector CON2; the receiving data connection J2-3 of the second DB9 interface J2 is connected to the third pin 3 of the first jumper connector CON1 and the first pin 1 of the second jumper connector CON2, respectively, and the transmitting data connection J2-2 of the second DB9 interface J2 is connected to the first pin 1 of the first jumper connector CON1 and the third pin 3 of the second jumper connector CON2, respectively. At this time, the first jumper cap is used to short the first pin 1 and the second pin 2 of the first jumper connector CON1, or the second pin 2 and the third pin 3 of the first jumper connector CON1; the second jumper cap is used to short the first pin 1 and the second pin 2 of the second jumper connector CON2, or the second pin 2 and the third pin 3 of the second jumper connector CON2.

[0046] When the first jumper connector CON1 and the second jumper connector CON2 are both five-pin connectors, the five pins of the five-pin connector are numbered in the order from top to bottom, and are respectively the first pin 1, the second pin 2, the third pin 3, the fourth pin 4, and the fifth pin 5. At this time, the connection relationship between the first DB9 interface, the second DB9 interface and the first jumper connector CON1, the second jumper connector CON2 can have two cases, the first case is to select three adjacent pins for connection, and the second case is to select three pins for jumper connection.

[0047] For example, the first case is taken as an example: the second pin 2, the third pin 3 and the fourth pin 4 which are adjacent to each other are selected, and the third pin 3 is the middle pin, and the second pin 2 and the fourth pin 4 are two pins adjacent to the third pin 3. Specifically, the receiving data connection J1-3 of the first DB9 interface J1 is connected to the third pin 3 of the first jumper connector CON1, and the transmitting data connection J1-2 of the first DB9 interface J1 is connected to the third pin 3 of the second jumper connector CON2. The receiving data connection J2-3 of the second DB9 interface J2 is connected to the fourth pin 4 of the first jumper connector CON1 and the second pin 2 of the second jumper connector CON2 respectively, and the transmitting data connection J2-2 of the second DB9 interface J2 is connected to the second pin 2 of the first jumper connector CON1 and the fourth pin 4 of the second jumper connector CON2 respectively. At this time, the first jumper cap is used to short the second pin 2 and the third pin 3 of the first jumper connector CON1, or the third pin 3 and the fourth pin 4 of the first jumper connector CON1 are shorted; the second jumper cap is used to short the second pin 2 and the third pin 3 of the second jumper connector CON2, or the third pin 3 and the fourth pin 4 of the second jumper connector CON2 are shorted.

[0048] For example, the second case is taken as an example: the first pin 1, the third pin 3 and the fifth pin 5 are selected, and the third pin 3 is the middle pin, and the first pin 1 and the fifth pin 5 are two pins adjacent to the third pin 3. Specifically, the receiving data connection J1-3 of the first DB9 interface J1 is connected to the third pin 3 of the first jumper connector CON1, and the transmitting data connection J1-2 of the first DB9 interface J1 is connected to the third pin 3 of the second jumper connector CON2. The receiving data connection J2-3 of the second DB9 interface J2 is connected to the fifth pin 5 of the first jumper connector CON1 and the first pin 1 of the second jumper connector CON2 respectively, and the transmitting data connection J2-2 of the second DB9 interface J2 is connected to the first pin 1 of the first jumper connector CON1 and the fifth pin 5 of the second jumper connector CON2 respectively. At this time, the first jumper cap is used to jump and short the first pin 1 and the third pin 3 of the first jumper connector CON1, or the third pin 3 and the fifth pin 5 of the first jumper connector CON1 are shorted; the second jumper cap is used to jump and short the first pin 1 and the third pin 3 of the second jumper connector CON2, or the third pin 3 and the fifth pin 5 of the second jumper connector CON2 are shorted.

[0049] It can be understood that, for those skilled in the art, after knowing that the first jumper connector CON1 and the second jumper connector CON2 are both five-pin connectors, and after knowing the connection relationship between the first DB9 interface, the second DB9 interface and the first jumper connector CON1 and the second jumper connector CON2, the connection relationship between the first DB9 interface, the second DB9 interface and the first jumper connector CON1 and the second jumper connector CON2 can be conceived for other pin numbers of the first jumper connector CON1 and the second jumper connector CON2, which will not be repeated here.

[0050] In order to improve the signal quality, as an optional implementation, the multipurpose converter further comprises a terminal resistance R1 connected between the transmission data connecting piece J1-2 and the request sending connecting piece J1-7.

[0051] Among them, for the resistance value of the terminal resistance R1, the utility model does not make special limitation to this, can select according to actual demand, the utility model subsequent with the resistance value of the terminal resistance R1 as 120 ohms (Ω) for example, carries out exemplary explanation.

[0052] In order to reduce power consumption, as an optional implementation, the multipurpose converter further comprises a switch S1 for controlling the terminal resistance R1 to be put into or cut off the circuit. The switch S1 is connected in series on the branch where the terminal resistance R1 is located.

[0053] Among them, for the switch type of the switch S1, the utility model does not make special limitation to this, can be a key switch, can also be an electric control switch, can also be a code switch and the like, in order to reduce production cost, the utility model embodiment is with the type of the switch S1 is a code switch for example, carries out exemplary explanation.

[0054] When the interface type of the first DB9 interface and the interface type of the second DB9 interface in the multipurpose data converter are the same, the connection relationship between each component is the same as when the interface type of the first DB9 interface and the interface type of the second DB9 interface are different, which will not be repeated here.

[0055] Figure 2 is a product structure schematic view of a multipurpose data converter provided by the utility model, like Figure 2As shown, the male DB9 interface and the female DB9 interface are welded on both ends of the printed circuit board 212 in a "back-to-back" manner to form the same type of connector. If the DB9 interface of the connected communication device is male, the female DB9 interface is used to connect with it, and the idle side is still the male DB9 interface. If the DB9 interface of the connected communication device is female, the male DB9 interface is used to connect with it, and the idle side is still the female DB9 interface. The printed circuit board 212 is also welded with a resistor 204, a DIP switch 205, a jumper connector 211 and a jumper connector 209; the jumper connector 209 is connected with a first jumper cap 208, and the jumper connector 211 is connected with a second jumper cap 210.

[0056] As an optional embodiment, the male DB9 interface and the female DB9 interface are welded on both sides of the printed circuit board 212 in a "back-to-back" manner, and are at a 90-degree angle.

[0057] As shown, the male DB9 interface includes a metal shell 201 and a pin 207, and the female DB9 interface includes a metal shell 201 and a socket 215 (not shown).

[0058] In order to facilitate connection with the communication device, a copper plate 214 is welded between the male DB9 interface and the pin 203, and a copper plate 214 is also welded between the female DB9 interface and the pin 203; each copper plate 214 is provided with a bolt hole 213 on both sides of the plate body for bolting with the communication device.

[0059] In order to protect the male DB9 interface and the female DB9 interface, as an optional embodiment, the printed circuit board 212 serves as the base of the entire structure, and two plastic bases 202 are welded on the printed circuit board 212; the plastic base 202 is located between the copper plate 214 and the pin 203, and the other plastic base 202 is used to seal the socket 215 of the female DB9 and the pin 207 in the male DB9, to prevent short circuit risk exposed to the outside.

[0060] As shown, the resistor 204 corresponds to the terminal resistor R1 in the electrical schematic diagram of the multipurpose data converter, and the DIP switch 205 corresponds to the switch S1 in the electrical schematic diagram of the multipurpose data converter. Figure 1 As shown, the resistor 204 corresponds to the terminal resistor R1 in the electrical schematic diagram of the multipurpose data converter, and the DIP switch 205 corresponds to the switch S1 in the electrical schematic diagram of the multipurpose data converter. Figure 1 As shown, the jumper connector 209 corresponds to the first jumper connector CON1 in the electrical schematic diagram of the multipurpose data converter, and the jumper connector 211 corresponds to the second jumper connector CON2 in the electrical schematic diagram of the multipurpose data converter. Figure 1 As shown, the resistor 204 corresponds to the terminal resistor R1 in the electrical schematic diagram of the multipurpose data converter, and the DIP switch 205 corresponds to the switch S1 in the electrical schematic diagram of the multipurpose data converter. Figure 1 As shown, the resistor 204 corresponds to the terminal resistor R1 in the electrical schematic diagram of the multipurpose data converter, and the DIP switch 205 corresponds to the switch S1 in the electrical schematic diagram of the multipurpose data converter. Figure 1The first DB9 interface J1 in the electric principle diagram of the multipurpose data converter corresponds to the female DB9 interface. Figure 1 The second DB9 interface J2 in the electric principle diagram of the multipurpose data converter corresponds to the male DB9 interface.

[0061] The jumper connector 209 and the jumper connector 211 are both three-pin connectors.

[0062] The pin 203 includes nine pins, and the nine pins of the pin 203 for fixing the male DB9 interface correspond to the pins 207 of the male DB9 interface one by one, and the nine pins of the pin 203 for fixing the female DB9 interface correspond to the jacks 215 of the female DB9 interface one by one.

[0063] It should be noted that the connection relationship between the components in the electric principle diagram of the multipurpose data converter is connected according to the electric principle diagram of the multipurpose data converter. Figure 2 Figure 1 The electric principle diagram of the multipurpose data converter is printed on the printed circuit of the printed circuit board 212, encapsulated, and invisible to the naked eye.

[0064] It can be understood that for those skilled in the art, the soldering relationship of the special-shaped connector can be thought of after knowing the soldering relationship of the same-shaped connector, which will not be repeated here.

[0065] The working principle of the multipurpose data converter provided by the utility model will be described below in combination with Figure 1 and Figure 2 The working principle of the multipurpose data converter provided by the utility model will be described below in combination with

[0066] As shown in Figure 1 and Figure 2 If the communication mode required between the two communication devices is RS232 communication, the first jumper 208 is connected to the first pin 1 and the second pin 2 of the first jumper connector CON1, and the second jumper 210 is connected to the first pin 1 and the second pin 2 of the second jumper connector CON2. It is equivalent to connecting the receiving data connection J1-3 of the first DB9 interface J1 to the transmitting data connection J2-2 of the second DB9 interface J2, and connecting the transmitting data connection J1-2 of the first DB9 interface J1 to the receiving data connection J2-3 of the second DB9 interface J2, so that the cross connection of the second pin and the third pin in the DB9 interface of the two communication devices can be realized.

[0067] ​If the communication mode required between two communication devices is RS485 communication, the first jump cap 208 is connected to the second pin 2 and the third pin 3 of the first jumper connector CON1. In other words, the transmission data connection J1-3 of the first DB9 interface J1 is connected to the transmission data connection J2-3 of the second DB9 interface J2, and the clear to send connection J1-8 of the first DB9 interface J1 is originally connected to the clear to send connection J2-8 of the second DB9 interface J2, so that the requirement of direct connection between the third pin and the eighth pin of the DB9 interface of the two communication devices can be met.

[0068] If the communication mode required between two communication devices is CAN communication, the second jump cap 210 is connected to the second pin 2 and the third pin 3 of the second jumper connector CON2. In other words, the receive data connection J1-2 of the first DB9 interface J1 is connected to the receive data connection J2-2 of the second DB9 interface J2, and the request to send connection J1-7 of the first DB9 interface J1 is originally connected to the request to send connection J2-7 of the second DB9 interface J2, so that the requirement of direct connection between the second pin and the seventh pin of the DB9 interface of the two communication devices can be met.

[0069] When the communication mode is CAN communication, if the terminal resistance R1 is required to be connected in parallel in the CAN network, the DIP switch 205 is closed; when the terminal resistance R1 is not required, the DIP switch 205 is opened.

[0070] It can be understood that for those skilled in the art, the working principle of the special connector can be thought of after knowing the working principle of the same type connector, which will not be repeated here.

[0071] The utility model discloses a multipurpose data converter, including first DB9 interface, second DB9 interface, first jumper plug connector, second jumper plug connector, first jump cap and second jump cap for shorting the adjacent two needle feet of jumper plug connector, the middle needle foot of first jumper plug connector is connected through the receiving data connecting piece of first DB9 interface, and the middle needle foot of second jumper plug connector is connected through the transmission data connecting piece of first DB9 interface, the receiving data connecting piece of second DB9 interface is connected with the adjacent one needle foot of the middle needle foot of first jumper plug connector and the adjacent one needle foot of the middle needle foot of second jumper plug connector respectively, and the transmission data connecting piece of second DB9 interface is connected with the adjacent other needle foot of the middle needle foot of first jumper plug connector and the adjacent other needle foot of the middle needle foot of second jumper plug connector respectively, the request sending connecting piece of first DB9 interface is connected with the request sending connecting piece of second DB9 interface, and the elimination sending connecting piece of first DB9 interface is connected with the elimination sending connecting piece of second DB9 interface. Compared with prior art, on the one hand, since the connection relationship between the two DB9 interfaces does not need to be controlled by dial switch, but is directly connected between the jumper cap and the plug connector and the two DB9 interfaces, the occurrence of misconnection or rejection can be reduced, on the second aspect, according to different communication requirements, the adjacent two needle feet of first jumper plug connector can be shorted by using first jump cap, and the adjacent two needle feet of second jumper plug connector can be shorted by using second jump cap, so that the flexibility is high, and the communication requirements of RS232, RS485 and CAN can be compatible; on the third aspect, since the first DB9 interface is matched with the DB9 interface of first communication equipment, and the second DB9 interface is matched with the DB9 interface of second communication equipment, the applicability is relatively high.

Claims

1. A multipurpose data converter characterized by, The first DB9 interface, the second DB9 interface, the first jumper connector, the second jumper connector, the first jumper cap and the second jumper cap for short-circuiting two adjacent pins of the jumper connector; The receiving data connector of the first DB9 interface is connected with the middle pin of the first jumper connector, and the transmitting data connector of the first DB9 interface is connected with the middle pin of the second jumper connector; The receiving data connector of the second DB9 interface is connected with one pin adjacent to the middle pin of the first jumper connector and one pin adjacent to the middle pin of the second jumper connector respectively, and the transmitting data connector of the second DB9 interface is connected with the other pin adjacent to the middle pin of the first jumper connector and the other pin adjacent to the middle pin of the second jumper connector respectively; The request to send connector of the first DB9 interface is connected with the request to send connector of the second DB9 interface; The clear to send connector of the first DB9 interface is connected with the clear to send connector of the second DB9 interface.

2. The multipurpose data converter of claim 1, wherein, The first jumper connector and the second jumper connector are three-pin connectors, the second pin of the three-pin connector is a middle pin, and the first pin and the third pin of the three-pin connector are two pins adjacent to the second pin; The receiving data connector of the first DB9 interface is connected with the second pin of the first jumper connector, and the transmitting data connector of the first DB9 interface is connected with the second pin of the second jumper connector; The receiving data connector of the second DB9 interface is connected with the third pin of the first jumper connector and the first pin of the second jumper connector respectively, and the transmitting data connector of the second DB9 interface is connected with the first pin of the first jumper connector and the third pin of the second jumper connector respectively.

3. The multipurpose data converter of claim 1, wherein, A terminal resistor for improving signal quality is further included, one end of the terminal resistor is connected with the transmitting data connector of the first DB9 interface, and the other end of the terminal resistor is connected with the request to send connector of the first DB9 interface.

4. The multipurpose data converter of claim 3, wherein, A switch is connected in series on the branch where the terminal resistor is located, and the switch is used to control the terminal resistor to be put into or cut out of the circuit.

5. The multipurpose data converter of claim 4, wherein, The switch is a DIP switch.

6. The multipurpose data converter according to any of claims 3-5, characterized in that, The resistance value of the terminal resistor is 120 ohms.

7. The multipurpose data converter of claim 1, wherein, The first jumper connector and the second jumper connector are welded on a printed circuit board; The first DB9 interface and the second DB9 interface are both welded on the printed circuit board through pins; The connection between the connectors of the first DB9 interface and the connectors of the second DB9 interface and the pins of the first jumper connector and the pins of the second jumper connector is realized through the printed circuit on the printed circuit board.

8. The multipurpose data converter of claim 1, wherein, The first DB9 interface is a male DB9 interface, and the second DB9 interface is a female DB9 interface.

9. The multipurpose data converter of claim 1, wherein, The first DB9 interface and the second DB9 interface are both male DB9 interfaces.

10. The multipurpose data converter of claim 1, wherein, The first DB9 interface and the second DB9 interface are both female DB9 interfaces.

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