Intrinsic safety type explosion-proof manual operation box based on modbus communication

Abstract

The utility model provides an intrinsic safety type explosion-proof manual operation box based on MODBUS communication. The intrinsic safety type explosion-proof manual operation box comprises a manual operation box slave station and a manual operation box master station, the hand-operated box slave station is provided with a slave station controller and a slave station power supply interface for supplying power to the hand-operated box slave station, the slave station controller is connected with a switching value input interface, the switching value input interface is connected with a key group, and the slave station controller is connected with a slave station communication interface; the manual operation box main station is provided with a main station controller and a main station power supply interface for supplying power to the manual operation box main station, and the main station controller is connected with a relay output interface and a main station communication interface; data transmission is carried out between the slave station communication interface and the master station communication interface in a wireless mode by using a Modbus-RTU protocol; according to the utility model, different output relation combinations of the switching value input interface at the slave station of the hand-operated box and the relay output interface at the master station of the hand-operated box can be realized through programming, so that different control modes can be conveniently expanded, and various control requirements can be flexibly met.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to an intrinsically safe explosion-proof hand-operated box based on MODBUS communication. Background Art

[0002] At present, the remote control of cranes is usually carried out by wired or wireless remote control. After the installation and wiring of this control method, the control output associated with the button cannot be changed unless the wiring method is modified, which limits the flexibility and expandability of the hand control box function and makes it difficult to meet different control requirements.

[0003] Therefore, it is necessary to design an intrinsically safe explosion-proof hand control box based on modbus communication that can easily expand different control methods and flexibly respond to various control requirements to solve the current technical problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an intrinsically safe explosion-proof hand control box based on modbus communication, which can conveniently expand different control modes and flexibly respond to various control requirements.

[0005] The technical solution of the utility model is: an intrinsically safe explosion-proof hand-operated box based on MODBUS communication, comprising a hand-operated box slave station and a hand-operated box master station; the hand-operated box slave station has a slave station controller and a slave station power supply interface for powering the hand-operated box slave station, the slave station controller is connected with a switch input interface, the switch input interface is connected with a key group, and the slave station controller is connected with a slave station communication interface; the hand-operated box master station has a master station controller and a master station power supply interface for powering the hand-operated box master station, the master station controller is connected with a relay output interface and a master station communication interface; the slave station communication interface and the master station communication interface are wirelessly transmitted and use the Modbus-RTU protocol for data transmission.

[0006] The slave station controller is connected to an indicator light output interface, and the indicator light output interface is connected to an indicator light group.

[0007] The slave station communication interface is connected to a slave station communication module, the master station communication interface is connected to a master station communication module, the slave station communication interface and the master station communication interface are both RS485 interfaces, the slave station communication module and the master station communication module are both RS485 to LoRa communication modules, and the slave station communication module and the master station communication module are connected via LoRa communication.

[0008] The master station controller and the slave station controller are both single chip microcomputer controllers.

[0009] The relay output interface has sixteen relay output circuits connected to the master station controller.

[0010] The relay output circuit comprises a wiring terminal, an amplifier circuit and a relay. The amplifier circuit is connected to the master station controller. The coil of the relay is connected in series to the output end of the amplifier circuit. The normally open contact and the normally closed contact of the relay are connected to the wiring terminal.

[0011] Beneficial effects of the utility model:

[0012] (1) In the present invention, the Modbus-RTU protocol is used for data transmission between the hand-operated box slave station and the hand-operated box master station. The Modbus-RTU protocol has the advantages of open standards, simplicity and ease of use, high reliability, and strong flexibility.

[0013] (2) It is possible to realize different output relationship combinations of the switch quantity input interface at the hand operation box slave station and the relay output interface at the hand operation box master station through programming, which is convenient for expanding different control methods and flexibly responding to various control needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a block diagram of the intrinsically safe explosion-proof hand control box based on MODBUS communication.

[0015] Figure 2 It is a circuit diagram of the relay output circuit in the utility model. DETAILED DESCRIPTION

[0016] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0017] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figure 1 As shown, an intrinsically safe explosion-proof hand-operated box based on MODBUS communication includes a hand-operated box slave station 2 and a hand-operated box master station 1; the hand-operated box slave station 2 has a slave station controller 21 and a slave station power supply interface 23 for powering the hand-operated box slave station 2, the slave station controller 21 is connected to a switch input interface 22, the switch input interface 22 is connected to a key group 26, the key group 26 has 1 to 16 and keys, and a signal can be input to the slave station controller by triggering the key, and the slave station controller 21 is connected to a slave station communication interface 28; the hand-operated box master station 1 has a master station controller 11 and a master station power supply interface 12 for powering the hand-operated box master station 1, the master station controller 11 is connected to a relay output interface 13 and a master station communication interface 14; the slave station communication interface 24 and the master station communication interface 14 are connected in a wireless manner and use the Modbus-RTU protocol to exchange data. Transmission, the hand-operated box master station 1 periodically (10Hz) scans the key input status information in the key group 26 connected to the switch input interface 22 of the hand-operated box slave station 2, and converts it into the corresponding relay output according to the program setting; in this embodiment, the Modbus-RTU protocol is used for data transmission between the hand-operated box slave station 2 and the hand-operated box master station 1. The Modbus-RTU protocol has the advantages of open standards, simple and easy to use, high reliability, and strong flexibility; different output relationship combinations of the switch input interface at the hand-operated box slave station 2 and the relay output interface 13 at the hand-operated box master station 1 can be realized through programming, which is convenient for expanding different control methods and flexibly responding to various control requirements; the specific programming method is well known to those skilled in the art, and programming can be performed as needed during use, and the specific programming method will not be repeated.

[0019] In some embodiments, the slave station controller 21 is connected to an indicator light output interface 25, and the indicator light output interface 25 is connected to an indicator light group 27. The slave station controller 21 receives the switch signal fed back by the hand control box master station 1, and turns on the corresponding indicator lights in the indicator light group 27 according to the program setting, so that the operator can understand the operating status of the master station.

[0020] In some embodiments, the slave communication interface 28 is connected to the slave communication module 24, and the master communication interface 14 is connected to the master communication module 15. The slave communication interface 28 and the master communication interface 14 are both RS485 interfaces. The slave communication module 24 and the master communication module 15 are both RS485 to LoRa communication modules. The slave communication module 24 is connected to the master communication module 18 via LoRa communication. The slave communication module 24 is connected to the slave communication interface 28 via the RS485 communication interface in the downlink, and the master communication module 18 is connected to the master communication interface 14 via the RS485 communication interface in the downlink. The slave communication module 24 is connected to the master communication interface 14 via the RS485 communication interface in the downlink. The master communication module 18 is connected to the master communication interface 14 via the RS485 communication interface in the downlink. The slave communication modules 24 are connected to the master communication modules 18 via LoRa communication.

[0021] In some embodiments, the master controller 11 and the slave controller 21 are both single-chip microcomputer controllers, and the single-chip microcomputer controllers have peripheral related circuits that constitute a single-chip microcomputer minimum system.

[0022] In some embodiments, the relay output interface 13 has sixteen-way relay output circuits connected to the master station controller 11 , and the master station controller 11 implements sixteen-way relay output control through the sixteen-way relay output circuits.

[0023] In some embodiments, as a specific implementation of the relay output circuit, Figure 2 As shown, the relay output circuit has a terminal P1, an amplifier circuit and a relay KJ. The amplifier circuit is connected to the master station controller 11. The amplifier circuit has a transistor T1 connected to the master station controller 11. The coil of the relay KJ (corresponding to the No. 1 terminal and the No. 4 terminal in the figure) is connected in series to the output end of the amplifier circuit. The normally open contact and the normally closed contact of the relay (corresponding to the No. 2 terminal, the No. 3 terminal and the No. 5 terminal in the figure) are connected to the terminal P1. The output of the master station controller 11 to the transistor T1 is used to control the coil of the relay KJ to be energized, and the normally open contact and the normally closed contact of the relay KJ are actuated.

[0024] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0025] The above-mentioned embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An intrinsically safe explosion-proof hand control box based on MODBUS communication, characterized by: Including hand operation box slave station and hand operation box master station; The hand-operated box slave station has a slave station controller and a slave station power supply interface for powering the hand-operated box slave station, the slave station controller is connected to a switch input interface, the switch input interface is connected to a key group, and the slave station controller is connected to a slave station communication interface; The hand-operated box master station has a master station controller and a master station power supply interface for powering the hand-operated box master station, and the master station controller is connected to a relay output interface and a master station communication interface; The slave station communication interface and the master station communication interface perform data transmission wirelessly using the Modbus-RTU protocol.

2. According to claim 1, the intrinsically safe explosion-proof hand-operated box based on MODBUS communication is characterized in that: The slave station controller is connected to an indicator light output interface, and the indicator light output interface is connected to an indicator light group.

3. The intrinsically safe explosion-proof hand-operated box based on MODBUS communication according to claim 1 is characterized in that: The slave station communication interface is connected to a slave station communication module, the master station communication interface is connected to a master station communication module, the slave station communication interface and the master station communication interface are both RS485 interfaces, the slave station communication module and the master station communication module are both RS485 to LoRa communication modules, and the slave station communication module and the master station communication module are connected via LoRa communication.

4. The intrinsically safe explosion-proof hand-operated box based on MODBUS communication according to claim 1 is characterized in that: The master station controller and the slave station controller are both single chip microcomputer controllers.

5. The intrinsically safe explosion-proof hand-operated box based on MODBUS communication according to claim 1 is characterized in that: The relay output interface has sixteen relay output circuits connected to the master station controller.

6. The intrinsically safe explosion-proof hand control box based on MODBUS communication according to claim 5 is characterized in that: The relay output circuit comprises a wiring terminal, an amplifier circuit and a relay. The amplifier circuit is connected to the master station controller. The coil of the relay is connected in series to the output end of the amplifier circuit. The normally open contact and the normally closed contact of the relay are connected to the wiring terminal.

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