CN212675059U - Electronic equipment terminal maintenance system - Google Patents
Electronic equipment terminal maintenance system Download PDFInfo
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- CN212675059U CN212675059U CN202021229913.8U CN202021229913U CN212675059U CN 212675059 U CN212675059 U CN 212675059U CN 202021229913 U CN202021229913 U CN 202021229913U CN 212675059 U CN212675059 U CN 212675059U
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Abstract
The utility model discloses an electronic equipment terminal maintenance system, which comprises an electronic equipment terminal and a wiring terminal row arranged on a plate body, wherein one side of the wiring terminal row is electrically connected with a two-wire system plug-in connector; one terminal of the plug-in connector is electrically connected to the terminal block, and the other terminal of the plug-in connector is electrically connected to the grounding terminal of the terminal block; the other side of the wiring terminal row is electrically connected to a row of relays; one electromagnetic end of the relay is electrically connected to the wiring terminal strip, and the other electromagnetic end of the relay is electrically connected to a grounding port of the wiring terminal strip; the one of which is normally opened end of relay is through third current-limiting resistance electric connection to maintenance power, the utility model discloses an electronic equipment terminal maintenance system can detect the maintenance to terminal output signal, examines time measuring, and control signal can not send response terminal, avoids control terminal to cause the malfunction.
Description
Technical Field
The utility model relates to an electronic equipment maintains circuit board, concretely relates to electronic equipment terminal maintenance system belongs to electronic equipment and maintains circuit board technical field.
Background
Along with the continuous development of science and technology, more and more control terminal is researched and developed and is applied to each field, because control terminal belongs to automatically controlled article, after it uses a period, need maintain it, thereby guarantee that equipment terminal can control peripheral equipment, current electronic equipment maintenance system all adopts direct function detection usually, but can not call to some control function it, response action like alarm system and warning later stage, in case test its function, lead to the rank confusion easily, the setting can produce the malfunction, in addition, current maintenance terminal only carries out output communication maintenance usually, generally not maintain to input communication interface.
Disclosure of Invention
In order to solve the problem, the utility model provides an electronic equipment terminal maintenance system can detect the maintenance to terminal output signal, can detect input communication interface simultaneously.
The utility model discloses an electronic equipment terminal maintenance system, including the electronic equipment terminal, still include the binding post row that sets up on the plate body, two-wire system's plug-in connector is connected to binding post row one side electricity; one terminal of the plug-in connector is electrically connected to the terminal block, and the other terminal of the plug-in connector is electrically connected to the grounding terminal of the terminal block; the other side of the wiring terminal row is electrically connected to a row of relays; one electromagnetic end of the relay is electrically connected to the wiring terminal strip, and the other electromagnetic end of the relay is electrically connected to a grounding port of the wiring terminal strip; one normally open end of the relay is electrically connected to a maintenance power supply through a third current limiting resistor, and the other normally open end of the relay is connected to an indicator lamp through a first current limiting resistor; the output end of the indicator light is grounded; the normally open end of the relay and the first current limiting resistor are connected in parallel to the external test switch through a lead; the other end of the external test switch is electrically connected to a test power supply through a second current-limiting resistor; the plug-in type connector is electrically connected with an external connector of the electronic equipment terminal in a plug-in manner; during maintenance, signal acquisition and input are carried out through an acquisition sensor, a key, a touch screen and the like of an electronic equipment terminal, the electronic equipment terminal outputs a control signal corresponding to an I/O interface after signal processing, the external equipment is controlled, the plug wire of the I/O interface is plugged into the plug-in connector of the terminal block, so that the minimum system of the single chip microcomputer provides a relay on the other side of the terminal block, the relay is closed by a normally open end, a maintenance power supply supplies power to an LED through a third current-limiting resistor and a first current-limiting resistor, the LED is lightened, the output interface of the electronic equipment terminal is normal, and detection and maintenance of each output terminal of the electronic equipment terminal are sequentially completed according to the operation; before detection, the external test switch needs to be closed to detect the function of the LED, and after the LED is determined to be normal, the external test switch is opened to detect the output peripheral equipment.
Further, one row of the relays comprises a direct connection relay group and a voltage division relay group; the electromagnetic end of each relay of the direct connection relay group is electrically connected to the wiring terminal strip; the electromagnetic end of each relay of the voltage division relay set is electrically connected to the wiring terminal strip through a voltage division resistor, and the voltage division resistor avoids overhigh output voltage and overlarge relay current.
Still further, the divider resistor is composed of two series resistors; one end of the resistor is electrically connected with the wiring terminal strip, the other end of the resistor is electrically connected with the grounding end of the wiring terminal strip, and the lower end of the resistor is used for sampling to avoid overhigh voltage.
Furthermore, a communication control board is fixed on the side of the plate body, which is close to the wiring terminal strip; the communication control panel comprises a singlechip minimum control system, and an I/O port of the singlechip minimum control system is respectively and electrically connected with a communication port selection key, an output data key, a memory, a USB circuit interface, an RS232 circuit interface, a 485 circuit interface, a CAN2.0 circuit interface and an Ethernet circuit interface; the communication protocol of each communication module stored in the singlechip is built in the singlechip minimum system, the singlechip minimum control system circularly detects a communication port selection key, when the low level or the falling edge of a certain port is collected, a key value of the port is obtained, and a certain communication interface is determined to be communicated according to the key value so as to enter the communication protocol port, thereby establishing a communication line between the singlechip and the electronic equipment terminal; and pressing the output data key to input the memory data into the terminal of the electronic equipment.
Compared with the prior art, the utility model discloses an electronic equipment terminal maintenance system can detect the maintenance to terminal output signal, examines time measuring, and control signal can not send response terminal to, avoids control terminal to cause the malfunction.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the overall structure of embodiment 2 of the present invention.
Detailed Description
Example 1:
the electronic equipment terminal maintenance system shown in fig. 1 includes an electronic equipment terminal a, and further includes a terminal block TA disposed on a board body, where one side of the terminal block TA is electrically connected to a two-wire plug-in connector; one terminal of the plug-in connector is electrically connected to the terminal block TA, and the other terminal of the plug-in connector is electrically connected to the ground terminal GND of the terminal block TA; the other side of the wiring terminal block TA is electrically connected to a row of relays K1; one electromagnetic end of the relay K1 is electrically connected to the wiring terminal strip, and the other electromagnetic end of the relay K1 is electrically connected to a grounding port GND of the wiring terminal strip; one normally open end of the relay K is electrically connected to a maintenance power supply VC1 through a third current limiting resistor R3, and the other normally open end of the relay K is connected to an indicator lamp D1 through a first current limiting resistor R1; the output end of the indicator lamp D1 is grounded; the relay K1 is connected between the normally open end and the first current limiting resistor R1 through a lead and is connected to an external test switch KS; the other end of the external test switch KS is electrically connected to a test power supply VC2 through a second current-limiting resistor R2; the plug-in type connector is electrically connected with an external connector of the electronic equipment terminal in a plug-in manner; during maintenance, signal acquisition and input are carried out through an acquisition sensor, a key, a touch screen and the like of an electronic equipment terminal, the electronic equipment terminal outputs a control signal corresponding to an I/O interface after signal processing, the external equipment is controlled, the plug wire of the I/O interface is plugged into the plug-in connector of the terminal block, so that the minimum system of the single chip microcomputer provides a relay on the other side of the terminal block, the relay is closed by a normally open end, a maintenance power supply supplies power to an LED through a third current-limiting resistor and a first current-limiting resistor, the LED is lightened, the output interface of the electronic equipment terminal is normal, and detection and maintenance of each output terminal of the electronic equipment terminal are sequentially completed according to the operation; before detection, the external test switch needs to be closed to detect the function of the LED, and after the LED is determined to be normal, the external test switch is opened to detect the output peripheral equipment.
The row of relays K1 comprises a direct connection relay set and a voltage division relay set; the electromagnetic end of each relay of the direct connection relay group is electrically connected to the wiring terminal strip; the electromagnetic end of each relay of the voltage division relay set is electrically connected to the TA of the wiring terminal row through a voltage division resistor, and the voltage division resistor avoids overhigh output voltage and overlarge relay current. The voltage dividing resistor consists of two series resistors RS1 and RS 2; one end of the resistor is electrically connected with the connecting terminal block TA, the other end of the resistor is electrically connected with the grounding end of the connecting terminal block TA, and the lower end resistor is used for sampling to avoid overhigh voltage.
Example 2:
as shown in fig. 2, in the electronic device terminal maintenance system, a communication control board is further fixed on the board body at the side of the terminal block TA; the communication control panel comprises a singlechip minimum control system, and an I/O port of the singlechip minimum control system is respectively and electrically connected with a communication port selection key, an output data key, a memory, a USB circuit interface, an RS232 circuit interface, a 485 circuit interface, a CAN2.0 circuit interface and an Ethernet circuit interface; the communication protocol of each communication module stored in the singlechip is built in the singlechip minimum system, the singlechip minimum control system circularly detects a communication port selection key, when the low level or the falling edge of a certain port is collected, a key value of the port is obtained, and a certain communication interface is determined to be communicated according to the key value so as to enter the communication protocol port, thereby establishing a communication line between the singlechip and the electronic equipment terminal; and pressing the output data key to input the memory data into the terminal of the electronic equipment.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (4)
1. The utility model provides an electronic equipment terminal maintenance system, includes electronic equipment terminal which characterized in that: the connecting terminal block is arranged on the plate body, and one side of the connecting terminal block is electrically connected with a two-wire plug-in connector; one terminal of the plug-in connector is electrically connected to the terminal block, and the other terminal of the plug-in connector is electrically connected to the grounding terminal of the terminal block; the other side of the wiring terminal row is electrically connected to a row of relays; one electromagnetic end of the relay is electrically connected to the wiring terminal strip, and the other electromagnetic end of the relay is electrically connected to a grounding port of the wiring terminal strip; one normally open end of the relay is electrically connected to a maintenance power supply through a third current limiting resistor, and the other normally open end of the relay is connected to an indicator lamp through a first current limiting resistor; the output end of the indicator light is grounded; the normally open end of the relay and the first current limiting resistor are connected in parallel to the external test switch through a lead; the other end of the external test switch is electrically connected to a test power supply through a second current-limiting resistor; the plug-in type connector is electrically connected with an external connector of the electronic equipment terminal in a plug-in manner.
2. The electronic device terminal maintenance system according to claim 1, characterized in that: the row of relays comprises a direct connection relay group and a voltage division relay group; the electromagnetic end of each relay of the direct connection relay group is electrically connected to the wiring terminal strip; and the electromagnetic end of each relay of the voltage division relay group is electrically connected to the wiring terminal strip through a voltage division resistor.
3. The electronic device terminal maintenance system according to claim 2, characterized in that: the voltage dividing resistor is composed of two series resistors; one end of the connecting terminal strip is electrically connected with the connecting terminal strip, and the other end of the connecting terminal strip is electrically connected with the grounding end of the connecting terminal strip.
4. The electronic device terminal maintenance system according to claim 1, characterized in that: a communication control board is further fixed on the side of the plate body, which is close to the wiring terminal strip; the communication control panel comprises a singlechip minimum control system, and an I/O port of the singlechip minimum control system is respectively and electrically connected with a communication port selection key, an output data key, a memory, a USB circuit interface, an RS232 circuit interface, a 485 circuit interface, a CAN2.0 circuit interface and an Ethernet circuit interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229913.8U CN212675059U (en) | 2020-06-30 | 2020-06-30 | Electronic equipment terminal maintenance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229913.8U CN212675059U (en) | 2020-06-30 | 2020-06-30 | Electronic equipment terminal maintenance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212675059U true CN212675059U (en) | 2021-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021229913.8U Active CN212675059U (en) | 2020-06-30 | 2020-06-30 | Electronic equipment terminal maintenance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212675059U (en) |
-
2020
- 2020-06-30 CN CN202021229913.8U patent/CN212675059U/en active Active
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