CN107341064B - Anti-misplug system based on sub circuit board of vehicle variable flow control unit - Google Patents
Anti-misplug system based on sub circuit board of vehicle variable flow control unit Download PDFInfo
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- CN107341064B CN107341064B CN201710344015.3A CN201710344015A CN107341064B CN 107341064 B CN107341064 B CN 107341064B CN 201710344015 A CN201710344015 A CN 201710344015A CN 107341064 B CN107341064 B CN 107341064B
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Abstract
The invention provides an anti-misplug system based on a sub circuit board of a vehicle variable flow control unit. The system for preventing wrong insertion of the invention comprises: the first sub circuit board and a mother board arranged on the case; the mother board comprises a plurality of rows of slots arranged in parallel and a memory corresponding to each slot, wherein the memory is used for storing the attribute information of the second daughter circuit board correctly inserted into the slots; a plurality of interfaces are arranged on each slot, the arrangement sequence of the plurality of interfaces arranged on each slot is the same, and the interfaces with the same type and positioned on different slots are positioned on the same row; when the first sub circuit board is inserted into the slot on the motherboard, the first sub circuit board is used for acquiring the attribute information of the second sub circuit board stored in the memory and judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board, if not, the first sub circuit board sends an alarm signal. The invention solves the problem of plugging error caused by complex coding in the existing plugging error prevention technology.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to an anti-misplug system based on a sub-circuit board of a vehicle variable flow control unit.
Background
At present, the sub circuit board misplug prevention technology of the urban rail vehicle variable flow control unit at home and abroad generally adopts a misplug prevention connector, and the misplug prevention connector comprises a tooth head arranged on the sub circuit board and a tooth plug of a control unit mother board.
In the prior art, a plurality of tooth heads are encoded manually, so that different tooth heads have different encoded identifications, and the encoded identifications are marked on the tooth heads. And for the tooth plug which is matched and connected with the tooth head, the same coding mark is adopted and marked on the tooth plug. The operator inserts the tooth head on the tooth plug through the identification code mark.
However, the misplug-proof connector is not only high in cost, but also has complicated coding of the tooth head and the tooth plug when the number of the sub circuit boards is large, and an operator is easy to have problems in the assembling process, so that the misplug-proof function is invalid.
Disclosure of Invention
The invention provides an anti-misplugging system based on a sub circuit board of a vehicle variable flow control unit, which aims to solve the problems that the coding of a tooth head and a tooth plug is complex in the existing anti-misplugging technology, so that the anti-misplugging function is invalid and a chassis cannot be assembled correctly.
The invention provides an anti-misplug system based on a sub circuit board of a vehicle variable flow control unit, which comprises: the first sub circuit board and a mother board arranged on the case;
the mother board comprises a plurality of rows of slots arranged in parallel and a memory corresponding to each slot, wherein the memory is used for storing attribute information of a second daughter circuit board correctly inserted into the slots;
a plurality of interfaces are arranged on each slot, the arrangement sequence of the plurality of interfaces arranged on each slot is the same, and the interfaces with the same type and positioned on different slots are positioned on the same line;
when the first sub circuit board is inserted into the slot on the motherboard, the first sub circuit board is used for acquiring the attribute information of the second sub circuit board stored in the memory and judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board, if not, the first sub circuit board sends an alarm signal.
Optionally, the first sub circuit board comprises: the controller is connected with the indicating device;
the controller is used for reading the attribute information of the second sub circuit board from the memory, judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board or not, and if not, sending a trigger signal to the indicating device;
the indicating device is used for sending the alarm signal to a user according to the trigger signal sent by the controller.
Optionally, a sub circuit board insertion detection interface is arranged on the memory, and the controller reads the attribute information of the second sub circuit board from the memory through the sub circuit board insertion detection interface.
Optionally, the indication means comprises at least one of:
sound indicating device, light indicating device, liquid crystal display device.
Optionally, the interface provided on each slot includes: a power interface and/or an input/output interface and/or a serial interface and/or a parallel interface.
Optionally, the power interfaces with the same voltage on different slots are located in the same row.
Optionally, the attribute information of the second sub circuit board includes at least one of the following information:
a hardware version, a software version, and a production date of the daughter circuit board.
The invention provides an error insertion prevention system based on a vehicle variable flow control unit sub-circuit board, which is characterized in that a motherboard is provided with a plurality of rows of parallel slots and a memory corresponding to each slot, each slot is provided with a plurality of interfaces, the arrangement sequence of the plurality of interfaces on each slot is the same, and the interfaces of the same type on different slots are positioned on the same row. Meanwhile, the memory stores the attribute information of the second sub circuit board correctly inserted with the slot, so that when the first sub circuit board is inserted in the slot on the motherboard, the first sub circuit board acquires the attribute information of the second sub circuit board stored in the memory and judges whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board, and if not, the first sub circuit board sends an alarm signal. The mother board provided by the invention has the advantages of consistency and strong expansibility, so that the first sub circuit boards can be unified in specification, the batch production is convenient, and the cost is saved. Meanwhile, when the daughter circuit board is plugged in the tooth grooves of the motherboard, whether attribute information of the daughter circuit board in the memory is consistent with attribute information of the daughter circuit board is judged, so that the daughter circuit board can be plugged in and out of the tooth grooves of the motherboard at will, and the functional failure of a control unit caused by the error of the daughter circuit board is prevented, and the problems that the existing tooth heads and tooth plugs are complex in coding, the misplug prevention function fails, and a case cannot be assembled correctly are solved.
Drawings
Fig. 1 is a schematic structural diagram of an anti-misplug system based on a sub-circuit board of a vehicle variable flow control unit provided by the invention;
fig. 2 is a schematic diagram of connection between an EEPROM on a motherboard and a first sub circuit board in the misplug prevention system based on the vehicle variable current control unit sub circuit board provided by the invention.
Detailed Description
Fig. 1 is a schematic structural diagram of an error insertion prevention system based on a sub circuit board of a vehicle variable flow control unit provided in the present invention, and as shown in fig. 1, the error insertion prevention system based on the sub circuit board of the vehicle variable flow control unit of the present embodiment includes: the first daughter circuit board 10 and a motherboard 20 arranged on the chassis, the motherboard 20 includes a plurality of rows of parallel slots 21 and a memory 22 corresponding to each slot 21, the memory 22 is used for storing the attribute information of the second daughter circuit board correctly plugged with the slot 21. Each slot 21 is provided with a plurality of interfaces, the arrangement sequence of the plurality of interfaces arranged on each slot 21 is the same, and the interfaces with the same model positioned on different slots 21 are positioned on the same row. When the first sub circuit board 10 is plugged in the slot 21 of the motherboard 20, the first sub circuit board 10 is configured to obtain the attribute information of the second sub circuit board stored in the memory 22, and determine whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board 10, if not, the first sub circuit board 10 sends an alarm signal.
Specifically, in this embodiment, the motherboard 20 is a control unit motherboard 20 on a chassis, a plurality of rows of parallel slots 21 are arranged on the motherboard 20, each slot 21 has a plurality of interfaces, the arrangement sequence of the plurality of interfaces on each slot 21 is the same, and the interfaces of the same type are located in the same row on each slot 21. This embodiment will be described in detail by way of an example. For example, two slots 21 are disposed on the motherboard 20, and the two slots 21 have a plurality of interfaces, such as a power interface and an input/output interface, the arrangement order of the plurality of interfaces on the two slots 21 is a power interface and an input/output interface, and the power interface is provided with three types, namely, a 3V power interface, a 5V power interface and a 12V power interface according to the actual situation, and the power interfaces are arranged in the slots 21 according to the arrangement order of the 3V power interface, the 5V power interface and the 12V power interface. Therefore, the arrangement sequence of the plurality of interfaces on the two slots 21 is 3V power interfaces, 5V power interfaces, 12V power interfaces and input/output interfaces, the 3V power interfaces of the two slots 21 are located in the same row, the 5V power interfaces of the two slots 21 are located in the same row, the 12V power interfaces of the two slots 21 are located in the same row, and the input/output interfaces of the two slots 21 are located in the same row.
Further, the present embodiment is not limited to the two interfaces of the above example, and optionally, the interface disposed on each slot 21 includes: power interface, input/output interface, serial interface, parallel interface. Meanwhile, the interfaces of the same type on the plurality of slots 21 are located on the same row, wherein for the power interface, optionally, the power interfaces with the same voltage on different slots 21 are located on the same row. The types of power supply interfaces in the present embodiment are not limited to 3V, 5V, and 12V in the above example. In addition, in this embodiment, the number of the slots 21 may be set according to a specific required amount, and only the arrangement sequence of the plurality of interfaces on each slot 21 is the same, and the interfaces of the same type are located in the same row on each slot 21. In this embodiment, the number and the type of the interfaces on a single slot 21 are not limited, and only the interfaces on the slot 21 can meet the requirement of plugging the first daughter circuit board 10.
Further, each slot 21 is disposed with a memory 22, and those skilled in the art will understand that there is usually no chip or electronic device on the motherboard 20, and generally only a connector is provided, and the memory 22 can be fixed on the motherboard 20 by means of additional soldering. In this embodiment, the type of the memory 22 is not limited, and only the memory 22 can store the attribute information of the second daughter circuit board. Each memory 22 stores attribute information of the second daughter board properly plugged into the corresponding slot 21. The second sub circuit board is a circuit board which is correctly inserted into each slot 21, the attribute information of the second sub circuit board is not a code mark of a tooth head and a tooth plug which are manually set in the corresponding technology, the attribute information is self-contained information of the second sub circuit board, and the sub circuit boards can be distinguished without manual coding. Optionally, the attribute information of the second sub circuit board includes at least one of the following information: hardware version, software version, and date of manufacture of the daughter circuit board. The attribute information of the second sub circuit board in the present embodiment is not limited to the above information. In addition, the embodiment does not limit the way in which the memory 22 stores information, and only the requirement that the memory 22 can store the attribute information of the second daughter circuit board is met.
Further, because the multiple columns of slots 21 are arranged in parallel, the corresponding interfaces of each slot 21 have the same arrangement order, and the interfaces of the same type are located in the same row on each slot 21, so that the motherboard 20 can maintain consistent definition. Correspondingly, the first sub circuit board 10 may be configured as a circuit board having the same size as the socket 21, and the first sub circuit board 10 may be provided with connectors at corresponding positions according to the specific positions of each interface on the motherboard 20, so as to be conveniently plugged into the interfaces on the socket 21. Therefore, the sizes, the joint positions and the number of the first sub circuit boards 10 are the same, so that the mass production is facilitated, and the cost is saved. The first sub circuit board 10 can be plugged on the motherboard 20 to realize normal operation only by electrically connecting the first sub circuit board 10 with the connector which needs corresponding function and action, and not electrically connecting the connector which does not need the function and action. For example, only a 3V voltage interface is needed, and then only the connector corresponding to the 3V voltage interface on the first sub circuit board 10 needs to be electrically connected.
The specific process of using the error insertion prevention system based on the sub circuit board of the vehicle variable flow control unit in the embodiment is as follows: the first daughter circuit board 10 is plugged into the slot 21 of the motherboard 20, and at this time, the slot 21 may be a correct slot 21 or an incorrect slot 21, and in this embodiment, the memory 22 is matched with the first daughter circuit board 10 for automatic determination. Specifically, the memory 22 stores attribute information of the second sub circuit board, and the first sub circuit board 10 itself stores attribute information of the first sub circuit board 10. When the first sub circuit board 10 is inserted into the slot 21, the first sub circuit board 10 may obtain the attribute information of the second sub circuit board in the memory 22, and by comparing whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board 10, if not, the first sub circuit board 10 is inserted incorrectly, and the first sub circuit board 10 sends an alarm signal; if the two sub-circuit boards are consistent, the first sub-circuit board 10 is correctly inserted, and then the operation can be started.
In the misplug prevention system based on the sub-circuit board of the vehicle variable current control unit provided by this embodiment, the motherboard is provided with a plurality of parallel slots and a memory corresponding to each slot, each slot is provided with a plurality of interfaces, the arrangement sequence of the plurality of interfaces on each slot is the same, and the interfaces of the same type located on different slots are located on the same row. Meanwhile, the memory stores the attribute information of the second sub circuit board correctly inserted with the slot, so that when the first sub circuit board is inserted in the slot on the motherboard, the first sub circuit board acquires the attribute information of the second sub circuit board stored in the memory and judges whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board, and if not, the first sub circuit board sends an alarm signal. The mother board arranged in the embodiment has the advantages of consistency and strong expansibility, so that the first sub circuit boards can be unified in specification, the batch production is convenient, and the cost is saved. Meanwhile, when the daughter circuit board is plugged in the tooth grooves of the motherboard, whether attribute information of the daughter circuit board in the memory is consistent with attribute information of the daughter circuit board is judged, so that the daughter circuit board can be plugged in and out of the tooth grooves of the motherboard at will, and the functional failure of a control unit caused by the error of the daughter circuit board is prevented, and the problems that the existing tooth heads and tooth plugs are complex in coding, the misplug prevention function fails, and a case cannot be assembled correctly are solved.
On the basis of the above embodiment, with reference to fig. 1, the first daughter circuit board 10 and the memory 22 on the motherboard 20 in the error-insertion-prevention system based on the vehicle variable current control unit daughter circuit board according to the present embodiment are described in detail.
Optionally, the first sub circuit board 10 includes: the controller is connected with the indicating device. The controller is used for reading the attribute information of the second sub circuit board from the memory 22, judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board 10 or not, and if not, sending a trigger signal to the indicating device. The indicating device is used for sending an alarm signal to a user according to the trigger signal sent by the controller.
Specifically, the controller in this embodiment may adopt a Central Processing Unit (CPU) or a Micro Control Unit (MCU), and the like, and the embodiment does not limit the type of the controller, and only needs to satisfy the function that the controller can read the attribute information of the second sub circuit board from the memory 22 and determine whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board 10.
Optionally, a daughter board insertion detection interface is disposed on the memory 22, and the controller reads the attribute information of the second daughter board from the memory 22 through the daughter board insertion detection interface.
Specifically, when the first sub circuit is plugged into the slot 21 of the motherboard 20, the controller of the first sub circuit board 10 is connected to the sub circuit board insertion detection interface of the memory 22, and reads the attribute information of the second sub circuit board in the memory 22. The controller of the first sub-circuit board 10 may also determine whether to communicate with the memory 22 according to the level of the sub-circuit board insertion detection interface of the memory 22, and after determining that the first sub-circuit board 10 is communicated with the memory 22, read the attribute information of the second sub-circuit board through another port of the memory 22. In this embodiment, the specific function of the daughter board insertion detection interface is not limited, and the full controller can read the attribute information of the second daughter board from the memory 22 through the daughter board insertion detection interface. For convenience of illustration, in this embodiment, the Memory 22 may be an Electrically Erasable Programmable Read-Only Memory (EEPROM), which is plug-and-play, can also erase existing information and load updated information, and is a Memory chip with no data loss after power failure.
Before the first circuit board is plugged with the slot 21 on the mother board 20, program loading is carried out on each EEPROM through the development board, so that the attribute information of the correct second sub circuit board of each correct plugging slot 21 is loaded into each EEPROM. There may be a variety of information written specifically in the EEPROM, which can indicate the inherent properties of the first sub circuit board 10, thereby distinguishing each first sub circuit board 10. As shown in table 1, for example, in the EEPROM, words 0 to 12 are written in the ID information of the CPU board, words 12 to 15 are written in the hardware version information Hw v0.1, words 16 to 19 are written in the software version information Sw v0.1, and words 0 to 12 are written in the production date of the first sub circuit board 10. The writing sequence of each information in the EEPROM may also be limited to the above writing sequence, which is not limited in this embodiment.
TABLE 1EEPROM write information schematic
| Address | Word length | Description of the invention | Examples of such applications are |
| 0 | 12 | ID | CPU board |
| 12 | 4 | Hardware version | Hw v0.1 |
| 16 | 4 | Software version | Sw v0.1 |
| 20 | 4 | Date of manufacture | 1.1.2017 |
Fig. 2 is a schematic diagram illustrating a connection between an EEPROM on a motherboard 20 and a first daughter circuit board 10 in the error insertion prevention system based on the daughter circuit boards of the vehicle variable current control unit provided by the present invention, as shown in fig. 2, the EEPROM has an RPGND port, a PRVCC port, an RPDET port, an RPCS port, an RPCLK port, and an RPDAT port. As shown in table 2, the RPGND port is connected to the power port of the motherboard 20, the PRVCC port is connected to the ground port of the motherboard 20, and the rest ports are in a floating state. The RPDET port is a daughter board insertion detection interface, the RPDAT port is an information reading interface, and the connection modes of the EEPROMs and the first daughter boards 10 are the same.
TABLE 2EEPROM Signal Definitions
| Signal name | Type of signal | Description of the invention |
| RPGND | Ground | EEPROM reference ground |
| RPVCC | Power supply | EEPROM reference power supply |
| RPDET | Open collector | Daughter circuit board insertion detection |
| RPCS | CMOS | EEPROM chip select |
| RPCLK | CMOS | EEPROM clock |
| RPDAT | CMOS | EEPROM serial data |
Specifically, before the first circuit board is plugged into the socket 21 on the motherboard 20, the PRDET port in the corresponding EEPROM is in a floating state, and the pull-up resistor is at a high level. When the first daughter board 10 is plugged into the socket 21, the corresponding PRDET port in the EEPROM is connected to RPGND, and is at a low level. When the first sub-circuit detects that the PRDET port is in a low level, the attribute information of the second sub-circuit board is read from the RPDAT port in the EEPROM.
Meanwhile, when the first daughter circuit board 10 is plugged into the socket 21, no matter whether the first daughter circuit board 10 is plugged into the socket 21 of the motherboard 20 correctly, the first daughter circuit board 10 transmits the attribute information of the first daughter circuit board 10 to the EEPROM of the corresponding socket 21, and the EEPROM records the attribute information, thereby facilitating the subsequent problem analysis.
Further, when the controller determines that the attribute information of the second sub circuit board is inconsistent with the attribute information of the first sub circuit board 10, the indicating device receives a trigger signal sent by the controller, and then sends an alarm signal to a user according to the trigger signal. In this embodiment, the specific type of the indicating device is not limited. Optionally, the indication means comprises at least one of: sound indicating device, light indicating device, liquid crystal display device.
Specifically, when the sound indicating device receives a trigger signal sent by the controller, an alarm is sent to the user in a sound mode. When the light indicating device receives the trigger signal sent by the controller, the light indicating device sends an alarm to the user in the form of light with certain color. When the liquid crystal display device receives the trigger signal sent by the controller, the liquid crystal display screen sends an alarm to the user in the form of displaying the character of 'inconsistent'. No matter what the above form of the indicating device is adopted, the user can know that the first sub circuit board 10 is inserted incorrectly.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An anti-misplug system based on a vehicle variable flow control unit sub-circuit board, comprising: the first sub circuit board and a mother board arranged on the case;
the mother board comprises a plurality of rows of slots arranged in parallel and a memory corresponding to each slot, wherein the memory is used for storing attribute information of a second daughter circuit board correctly inserted into the slots;
a plurality of interfaces are arranged on each slot, the arrangement sequence of the plurality of interfaces arranged on each slot is the same, and the interfaces with the same type and positioned on different slots are positioned on the same line;
when the first sub circuit board is inserted into the slot on the motherboard, the first sub circuit board is used for acquiring the attribute information of the second sub circuit board stored in the memory and judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board, if not, the first sub circuit board sends an alarm signal;
the first sub circuit board includes: the controller is connected with the indicating device;
the controller is used for reading the attribute information of the second sub circuit board from the memory, judging whether the attribute information of the second sub circuit board is consistent with the attribute information of the first sub circuit board or not, and if not, sending a trigger signal to the indicating device;
the indicating device is used for sending the alarm signal to a user according to the trigger signal sent by the controller.
2. The system of claim 1, wherein the memory is provided with a daughter board insertion detection interface, and the controller reads the attribute information of the second daughter board from the memory through the daughter board insertion detection interface.
3. The error proofing system of claim 1, wherein the indicating device comprises at least one of:
sound indicating device, light indicating device, liquid crystal display device.
4. The system of claim 1, wherein the interface disposed on each of the slots comprises: a power interface and/or an input/output interface and/or a serial interface and/or a parallel interface.
5. The system of claim 4, wherein power interfaces with the same voltage on different sockets are located in the same row.
6. The system of claim 1, wherein the attribute information of the second sub-circuit board comprises at least one of the following information:
a hardware version, a software version, and a production date of the second daughter circuit board.
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| CN201710344015.3A CN107341064B (en) | 2017-05-16 | 2017-05-16 | Anti-misplug system based on sub circuit board of vehicle variable flow control unit |
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| CN201710344015.3A CN107341064B (en) | 2017-05-16 | 2017-05-16 | Anti-misplug system based on sub circuit board of vehicle variable flow control unit |
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| CN108304284A (en) * | 2018-01-05 | 2018-07-20 | 海信容声(广东)冰箱有限公司 | A kind of circuit board and its anti-misconnection method and electronic equipment |
| CN116541895A (en) * | 2023-06-20 | 2023-08-04 | 荣耀终端有限公司 | Circuit board detection method, electronic device and chip system |
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| CN2586260Y (en) * | 2002-10-31 | 2003-11-12 | 深圳市中兴通讯股份有限公司 | Device for preventing error plugging of printed circuit board |
| CN101673237A (en) * | 2009-09-02 | 2010-03-17 | 太仓市同维电子有限公司 | Network type method for debugging starting procedure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101986279B (en) * | 2010-11-17 | 2013-01-16 | 许继集团有限公司 | Board card test system |
| CN104317694B (en) * | 2014-10-31 | 2017-01-25 | 上海原动力通信科技有限公司 | Whole machine testing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2586260Y (en) * | 2002-10-31 | 2003-11-12 | 深圳市中兴通讯股份有限公司 | Device for preventing error plugging of printed circuit board |
| CN101673237A (en) * | 2009-09-02 | 2010-03-17 | 太仓市同维电子有限公司 | Network type method for debugging starting procedure |
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