CN219698216U - Electric cabinet - Google Patents

Abstract

The utility model relates to an electric cabinet, which comprises a cabinet body, a main board and a plurality of similar type board cards, wherein the main board is provided with a plurality of board card slots; the same type of board cards comprise board card plugs, and the same type of board cards are inserted into board card slots on the main board through the board card plugs; the main board comprises a plurality of address circuits with unique address codes, and each board card slot corresponding to the same type of board card is connected with one address circuit; the same type of the template cards comprises an address reading circuit, and control programs of all the same type of the template cards are burnt in the memory of the same type of the template cards; when the similar type board card is inserted into any board card slot on the main board, an address reading circuit reads an address signal of an address circuit electrically connected with the board card slot, and a control program corresponding to the address code in the memory is operated according to the address code corresponding to the address signal. The utility model realizes the replaceability of the same type of board card, thereby not only facilitating the installation and management of the board card, but also reducing the maintenance cost of the program.

Description

Electric cabinet

Technical Field

The utility model relates to the field of electrical control, in particular to an electric cabinet.

Background

The electric cabinet is one of indispensable components in an electric control system in industrial control equipment. In general, an electric cabinet is internally provided with an electric board, various electric elements which are mutually connected to form a control circuit are arranged on the electric board, holes for leading wires to enter and exit are reserved in the electric cabinet, or interfaces used for electric connection, such as sockets and the like, are arranged on the electric cabinet and are used for being electrically connected with other components in industrial control equipment, such as sensors, executing devices and the like arranged at various parts of the industrial control equipment, so that the functions of data acquisition, control of the executing devices and the like are completed. For industrial control equipment with complex electric control process and more controlled execution devices, a board card structure is generally adopted on hardware, and control programs are independently arranged for different boards. Therefore, the electric cabinet generally comprises a main board, a main control board card, a plurality of functional board cards and peripheral interfaces, wherein the main board mainly provides a power supply, a communication circuit and a board card slot, the main control board card and the functional board card are fixed in the board card slot of the main board through plug slots, power is obtained through the main board and communicated with each other, and the peripheral interfaces can be flexibly arranged on the main board or the electric cabinet body and electrically connected with corresponding board cards so as to realize the electric connection of the board cards and related components outside the electric cabinet and further complete corresponding functions.

In an actual application scenario, when multiple paths of signals of the same type need to be collected or multiple paths of control signals of the same type need to be sent out in an industrial control device, multiple boards are usually required to be designed, and because the types of the signals are the same, hardware circuits of the boards are the same, but control programs are different. For this application scenario, it is common practice to burn a corresponding software control program for each board card individually. In order to avoid the confusion of the board card, a mark is arranged on the appearance of the board card, and a fixed position is arranged on the main board. When the control program is not burnt, the hardware of the boards is identical, and the boards with signals of which types are not limited by the hardware of the boards, and then the boards cannot be replaced after the control program is burnt. When one board card cannot work normally and is not in stock in the use process, even if other board cards with identical hardware exist in a warehouse, the current problem board card cannot be replaced. In addition, because the board card hardware is completely the same, the board card hardware is easy to be misplaced during installation, so that industrial control equipment cannot work normally; errors are also prone to occur in warehouse storage management.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides an electric cabinet, which avoids the defects of incapability of mutual replacement and the like caused by adopting a plurality of boards with the same hardware.

In order to solve the technical problems, the utility model provides an electric cabinet, which comprises a cabinet body, a main board and a plurality of similar type board cards, wherein the main board is positioned in the cabinet body and is at least provided with a plurality of board card slots; the same type of board cards comprise board card plugs, and the same type of board cards are inserted into board card slots on the main board through the board card plugs; the main board comprises a plurality of address circuits with unique address codes, and each board card slot corresponding to the same type of board card is connected with one address circuit; the same type of the template cards comprises an address reading circuit, and control programs of all the same type of the template cards are burnt in the memory of the same type of the template cards; when the similar type board card is inserted into any board card slot on the main board, an address reading circuit reads an address signal of an address circuit electrically connected with the board card slot, and a control program corresponding to the address code in the memory is operated according to the address code corresponding to the address signal.

Preferably, the address circuit on the motherboard includes a multi-channel address code level circuit, the high level signal corresponds to address code "1", and the low level signal corresponds to address code "0".

Preferably, a power circuit is provided on the main board; the address code level circuit is connected with a power supply circuit on the main board, a high-level signal end of the address code level circuit is connected with a power supply end in the power supply circuit, and a low-level signal end of the address code level circuit is connected with a grounding end of the power supply circuit.

Preferably, the address reading circuit on the board card comprises a level matching circuit, and the level matching circuit comprises a voltage dividing circuit and a data transceiver, wherein one end of the voltage dividing circuit is connected with the address reading end in the card plug, the other end of the voltage dividing circuit is grounded, the voltage dividing end is connected with a first transmission end of the data transceiver, and a second transmission end of the data transceiver is connected with a signal input end of the control module of the card.

Preferably, the box comprises an upper top plate, a lower bottom plate, a left side plate and a right side plate, wherein the main plate is a box back plate, and the upper top plate, the lower bottom plate, the left side plate, the right side plate and the back plate form a holding space of a board card.

Preferably, a power circuit, a communication circuit, a board card slot and an address circuit are provided on the inner side of the box backboard, and a power external interface and a peripheral interface are provided on the outer side of the box backboard.

Preferably, the left side plate and the right side plate are respectively provided with a plurality of corresponding slide ways, two sides of the board card are arranged in the slide ways, and one end of the board card in the sliding direction is provided with a board card plug.

Preferably, the upper top plate and the lower bottom plate are respectively provided with a plurality of corresponding slide ways, two sides of the board card are arranged in the slide ways, and one end of the board card in the sliding direction is provided with a board card plug.

Preferably, the positions of the board card slots corresponding to different types of board cards on the backboard of the box body are staggered.

Preferably, the left and right side plates are provided with heat radiation holes.

The control programs of all boards are burnt in the boards with the same hardware in the electric cabinet, and the corresponding control programs in the memory are determined through the address circuit connected with the board slot on the main board, so that the replaceability of the boards of the same type is realized, the installation and the management of the boards are convenient, and the program maintenance cost is reduced.

Drawings

Preferred embodiments of the present utility model will be described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of an address circuit on a motherboard according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of an address reading circuit of a board card according to one embodiment of the utility model;

FIG. 3 is a schematic diagram of an address code transmission principle according to an embodiment of the present utility model; and

fig. 4A and 4B are schematic perspective views of an electric cabinet according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the inside structure of the motherboard of FIG. 4B; and

fig. 6 is a schematic view of a partial structure of a board according to an embodiment of the utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments of the utility model. In the drawings, like reference numerals describe substantially similar components throughout the different views. Various specific embodiments of the utility model are described in sufficient detail below to enable those skilled in the art to practice the teachings of the utility model. It is to be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to embodiments of the present utility model.

The utility model provides an electric cabinet, which comprises a cabinet body, a main board and a plurality of similar type board cards, wherein the main board is positioned in the cabinet body and is provided with a power circuit, a communication circuit, a plurality of board card slots and peripheral interfaces, and the peripheral interfaces are electrically connected with the board card slots; the same type of board card comprises a board card plug which is inserted into a same type of board card slot on the main board. The case body may be a case with standard dimensions, for example, 1U, 2U, 3U, 4U, etc. cases with standard heights, where 1 u=44 mm, and the standard widths of the cases with standard heights are 430mm, and the standard depths are two, such as 450mm and 480mm. The box body of the utility model can also be a nonstandard box, namely, the size of the box body is designed according to the actual installation requirement and the number of the built-in boards.

The main board can be positioned in the box body and can also be used as a side board of the box body to form a component part of the box body. In order to supply power to each board card, the main board comprises a power circuit; in order to enable the boards to communicate with each other before, the main board also comprises a communication circuit. In one embodiment, a power interface is provided on the motherboard for connecting to an external power source, and a power circuit is printed on the motherboard and electrically connected to the corresponding power terminals of each board slot. In another embodiment, the communication circuits are also arranged on the main board in a printed manner, and the communication circuits are respectively electrically connected with corresponding communication terminals of the board card slots. The main board also comprises peripheral interfaces and corresponding peripheral circuits, and each board card slot is connected to one or more peripheral interfaces through the peripheral circuits on the main board. The peripheral interface can not only receive signals from other components in the industrial control equipment, but also send the board card control signals to some executive equipment in the industrial control equipment.

The main board comprises a plurality of address circuits with unique address codes, and each similar type board card slot is connected with one address circuit. The same type of board card comprises an address reading circuit, and the memory of the same type of board card is burnt with control programs of all the same type of board cards. When a same type of board card is inserted into any one of the same type of board card slots on the main board through a board card plug, the board card reads an address signal of an address circuit electrically connected with the board card slot, and a control program corresponding to the address code in the memory is operated according to the address signal.

In one embodiment, the address circuit on the motherboard is an address code level circuit, which is arranged on the motherboard in a printing manner, the high level signal end of the address code level circuit is connected with the power supply end of the power supply circuit, and the low level signal end of the address code level circuit is connected with the ground end of the power supply circuit. The high level signal corresponds to address code "1", and the low level signal corresponds to address code "0".

FIG. 1 is a schematic diagram of address circuitry on a motherboard according to one embodiment of the present utility model. In this embodiment, the power interface 21 is externally connected with a switching power supply, and the switching power supply provides a power supply end and a ground end with 24V. The printed circuit on the motherboard includes a power supply line and a ground line, and the address circuit in this embodiment includes five wires, one end of each wire is connected to a terminal (hereinafter referred to as an address reading end) in the board slot, and the other end is connected to the power supply line or the ground line in the motherboard printed circuit. As shown in fig. 1, one end of the first wire of the address circuit 221 is connected to the power supply line E24V, the other end is connected to one terminal of the address reading end of the card slot 231, one end of the remaining four wires is respectively connected to four terminals of the address reading end of the card slot 231, and the other ends are connected to the ground line. When the 24V power supply line of the address circuit 221 corresponding to the five address terminals in the board slot 231 is at a high level, the address code "1" corresponds to the address code, the ground line of the address circuit 221 is at a low level, and the address code "0" corresponds to the address code, thereby obtaining a five-bit address code signal. As shown in fig. 1, the address code of the board slot 231 is 00001, the address code of the board slot 232 is 00010, and so on, the corresponding address code and the corresponding address circuit are set according to the number of boards.

Fig. 2 is a schematic diagram of an address reading circuit of a board card according to an embodiment of the present utility model. The address reading circuit comprises a level matching circuit, the level matching circuit comprises a voltage dividing circuit 321 and a data transceiver 322, wherein one end of the voltage dividing circuit 321 is connected with an address reading end in the card plug 31, the other end of the voltage dividing circuit is grounded, the voltage dividing end is connected with a first transmission end of the data transceiver 322, and a second transmission end of the data transceiver 322 is connected with a signal input end of the microcontroller 33 in the card control module. The resistance of the voltage dividing circuit 321 depends on the high-level signal voltage of the address circuit and the signal voltage of the data transceiver 322. In one embodiment, as shown in fig. 2, one voltage dividing branch is composed of a voltage dividing resistor R1 and a voltage dividing resistor R2, where the voltage dividing resistor R1 is 10k and the voltage dividing resistor R2 is 1.5k. The address levels may be buffered by a voltage divider circuit and matched to the signal voltage of the data transceiver 322. In one embodiment, data transceiver 322 is, for example, an 8-way in-phase tri-state bi-directional bus transceiver, such as model 74LS245, that can bi-directionally transmit data with DIR being the chip select terminal, with signals being transmitted from terminal B to terminal A, i.e., receive data, when DIR is 0, and signals being transmitted from terminal A to terminal B, i.e., send data, when DIR is 1. In this embodiment, the card is configured to read the address code in the card slot, and the data transceiver 322 should receive the address code signal in the card slot, so the chip select end is 0 in this embodiment. The data transceiver 322 transmits the address code from the B-side to the a-side.

Fig. 3 is a schematic diagram of an address code transmission principle according to an embodiment of the present utility model. The power supply circuit on the main board 2 is connected with the address circuit 22, the address circuit 22 is connected with the board card slot 23, and when the board card 3 is plugged into the board card slot 23 through the board card plug 31, the address reading circuit 32 reads the address signal provided by the corresponding address circuit 22 through the board card plug 31 and the board card slot 23 and sends the address signal to the microcontroller 33 of the board card 3, so that the microcontroller 33 obtains the address corresponding to the board card slot 23.

The memory of the board card microcontroller 33 is programmed with control programs of all the same type of board cards. When the microcontroller 33 of the board obtains the address code of the address circuit of the current board slot, the control program corresponding to the address code in the memory is operated.

Fig. 4A and fig. 4B are schematic perspective views of an electric cabinet according to an embodiment of the present utility model. In this embodiment, the box body of the electric cabinet includes an upper top plate 11, a lower bottom plate 12, and left and right side plates 13, wherein the main board 2 is a box back plate, and the upper top plate 11, the lower bottom plate 12, the left and right side plates 13, and the back plate form a containing space of the board card 3. In this embodiment, the front surface is a mounting surface, and thus mounting plates 14 are provided at the upper and lower ends of the front surface of the case, in which mounting holes are provided, and after the boards are all mounted, the electric cabinet is mounted at a predetermined position through the mounting plates 14 and the connecting members. For heat dissipation, the left and right side plates 13 are provided with heat dissipation holes.

The motherboard 2 in this embodiment is a double-sided circuit board, and uses the interior space of the case as a reference, and the side facing the interior space of the case is the motherboard inside, and the side facing the exterior space of the case is the motherboard outside. A power interface 21 and a peripheral interface 24 are provided outside the main board. Fig. 5 is a schematic view of an inner structure of the motherboard in fig. 4B. A plurality of board card slots 23 are provided on the inner side of the main board 2. The motherboard 2 is a multi-layer board, the middle is a printed circuit layer, the printed circuit layer comprises a power circuit, a communication circuit, an address circuit and the like, and the electrical connection among the power interface 21, the peripheral interface 24, the board slot 23 and the like is realized on the printed circuit layer. The outer surface of the printed circuit layer is a protective layer for physically protecting the internal printed circuit layer and has the functions of electromagnetic protection and the like. In order to prevent the misplug of the board, the positions of the different types of board slots are staggered. As shown in fig. 5, the leftmost two boards are identical in function type, the middle seven boards are identical in position, the middle seven boards are identical in function type, the leftmost two boards are identical in position, but the leftmost two boards are different from the middle seven boards and the rightmost one functional type, and therefore the positions of the three kinds of board slots are staggered from each other. The same type of card can be inserted into any one of the same type of card slot, while a different type of card cannot be inserted into a card slot that does not match its type. Thus physically preventing the card from being misplaced.

Fig. 6 is a schematic view of a partial structure of a board according to an embodiment of the utility model. The board 3 is provided with circuit elements according to the functions to be implemented, and will not be described in detail here. One end of the board 3 is provided with a board plug 31, and each pin in the board plug 31 is electrically connected with a circuit on the board. In this embodiment, the box body of the electric cabinet is vertical, the left side plate 13 and the right side plate 13 of the box body are respectively provided with a plurality of corresponding slide ways 131, the main board 2 is a box back board, two sides of the board card 3 are arranged in the slide ways, and the board card 3 is inserted into the box space from the open end of the box body along the slide ways 131, so that the board card plug 31 is arranged at one end of the board card 3 in the sliding direction, and when the board card plug 31 of the board card 3 is inserted into the board card slot, the board card plug 31 can be inserted into the board card slot by slight external force, and the board card plug 31 and the board card are tightly connected together. In the vertical box, as shown in fig. 4A, the boards of the board cards 3 are arranged in parallel and at intervals from top to bottom.

In another embodiment, the electric cabinet can also be horizontal, and at this time, a plurality of corresponding slide ways are respectively arranged on the upper top plate and the lower bottom plate, two sides of the board card are arranged in the slide ways, and the board surface of the board card faces the side surface and is parallel and spaced from left to right.

Application examples

The chemiluminescent immunofluorescence analyzer is a medical examination instrument for performing immune analysis on human body by detecting serum of a patient, and mainly comprises a sample bank, a Guan Ku unit, a cleaning unit, a detection unit, an incubation unit and the like. The chemiluminescent immunoassay analyzer can fully automatically detect samples and has the advantages of automation, high efficiency and the like. For a specific structure, reference is made to the prior art. In the process of controlling each unit to orderly operate according to a preset flow, the chemiluminescent immunofluorescence analyzer needs to collect and control multiple paths of temperatures and orderly sends control signals to a plurality of stepping motors according to a certain flow so as to control the orderly actions of related mechanisms. Therefore, the electric cabinet of the chemiluminescent immunofluorescence analyzer comprises a middle-position board card, a plurality of temperature control board cards and a plurality of motor board cards, the temperature control board cards are used for collecting and controlling temperature data, the motor board cards are used for controlling the operation of the stepping motor, the middle-position board cards are respectively communicated with the temperature control board cards and the motor board cards through communication circuits on a main board and are communicated with an upper computer, related data are sent to the upper computer, and control parameters and the like sent by the upper computer are received. The outside of the electric cabinet backboard comprises a plurality of peripheral interfaces which are respectively used for being connected with a temperature sensor, a stepping motor and the like in the whole chemiluminescent immunofluorescence analyzer and are electrically connected with corresponding board card slots so as to send data to the board card or receive control data sent by the board card.

The electric cabinet of the chemiluminescence immunofluorescence analyzer adopts a 4U industrial personal computer case, 10 board card slots are arranged on a back plate, wherein 1 board card slot is used for being connected with a middle board card, 7 board card slots are used for being connected with motor board cards with the same functions as 7 pieces of hardware, and 2 board card slots are used for being connected with temperature control board cards with the same functions as 2 pieces of hardware. Each motor board card is required to complete different motor motion control functions, and each temperature control board card is required to complete different temperature acquisition and control functions. The 7 board card slots corresponding to the motor board card and the 2 board card slots corresponding to the temperature control board card are respectively connected with an address circuit. All the motor board cards are burnt with all control programs for realizing control functions of different motors, and each control program corresponds to one address code. Each address code corresponds to a stepper motor in the analyzer. In this embodiment, the analyzer has 7 stepper motors, each of which is electrically connected to a board card slot through a peripheral interface, and the board card slot is connected to an address circuit. Thus, the unique corresponding relation of the actually operated stepping motor, the board card slot, the address circuit, the address code and the corresponding control program is established. When one motor board card is inserted into one board card slot, an address reading circuit in the motor board card reads a corresponding address code from an address circuit electrically connected with the board card slot, and a microcontroller in the motor board card determines a control program corresponding to the address code according to the address code and runs the control program, so that the control of the stepping motor corresponding to the address code is realized.

Similarly, when a temperature control board card is inserted into a board card slot, an address reading circuit in the temperature control board card reads a corresponding address code from an address circuit electrically connected with the board card slot, and a control program corresponding to the address code is operated, so that the acquisition and control of the temperature corresponding to the address code are realized.

Because all control programs are burnt on the same type of board card, the same type of problem board card can be replaced by the same type of board card. Because the hardware and software programs of all the same type of boards are the same, the boards are not limited by the corresponding board slots when in use, and can be randomly plugged into the same type of board slots. In this embodiment, a motor board card can be randomly inserted into any one of the motor board card slots on the back plate, and the mounting of the motor board card is more convenient and faster. Because the positions of the different types of board card slots are staggered, if the board card slots are misplaced during plugging, for example, when the temperature control board card is plugged into the motor board card slot, the board card slots and the board card plugs cannot be plugged together because the positions of the board card slots and the board card plugs are not corresponding. The same type of board card is not subdivided, so that the management of the board card is also facilitated, and the upgrade and maintenance can be carried out together when the software program is upgraded and maintained, and the maintenance cost of the system is reduced.

The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the scope of the present utility model, therefore, all equivalent technical solutions shall fall within the scope of the present disclosure.

Claims (10)

1. The electric cabinet comprises a cabinet body, a main board and a plurality of similar type board cards, wherein the main board is positioned in the cabinet body and is at least provided with a plurality of board card slots; the same type of board cards comprise board card plugs, and the same type of board cards are inserted into board card slots on the main board through the board card plugs; the method is characterized in that a plurality of address circuits with unique address codes are provided on the main board, and each board slot corresponding to the same type of board card is connected with one address circuit; the same type of the template cards comprises an address reading circuit, and control programs of all the same type of the template cards are burnt in the memory of the same type of the template cards; when the similar type board card is inserted into any board card slot on the main board, an address reading circuit reads an address signal of an address circuit electrically connected with the board card slot, and a control program corresponding to the address code in the memory is operated according to the address code corresponding to the address signal.

2. The electric cabinet of claim 1, wherein the address circuit on the main board comprises a multi-channel address code level circuit, the high level signal corresponds to address code "1", and the low level signal corresponds to address code "0".

3. The electric cabinet according to claim 2, wherein a power supply circuit is provided on the main board; the address code level circuit is connected with a power supply circuit on the main board, a high-level signal end of the address code level circuit is connected with a power supply end in the power supply circuit, and a low-level signal end of the address code level circuit is connected with a grounding end of the power supply circuit.

4. The electric cabinet of claim 1, wherein the address reading circuit on the same type of board card comprises a level matching circuit comprising a voltage dividing circuit and a data transceiver; the voltage division circuit is connected with the first transmission end of the data transceiver, and the second transmission end of the data transceiver is connected with the signal input end of the card control module on the similar type board card.

5. The electric cabinet of claim 1, wherein the cabinet comprises an upper top plate, a lower bottom plate, and left and right side plates, wherein the main plate is a cabinet back plate, and the upper top plate, the lower bottom plate, the left and right side plates, and the back plate form a holding space for a board card.

6. The electric cabinet of claim 5, wherein a plurality of board card slots are provided on an inner side of the cabinet back plate, and a power external interface and a peripheral interface are provided on an outer side of the cabinet back plate.

7. The electric cabinet as claimed in claim 5, wherein the left and right side plates are respectively provided with a plurality of slides corresponding to each other, both sides of the board are placed in the slides, and a board plug is provided at one end of the sliding direction of the board.

8. The electric cabinet as claimed in claim 5, wherein the upper top plate and the lower bottom plate are respectively provided with a plurality of slides corresponding to each other, both sides of the board are placed in the slides, and a board plug is provided at one end of the sliding direction of the board.

9. The electric cabinet as claimed in claim 7 or 8, wherein the positions of the card slots corresponding to different types of cards on the cabinet back board are staggered.

10. The electric cabinet of claim 5, wherein the left and right side plates are provided with heat dissipation holes.