CN211181050U

CN211181050U - Comprehensive state intelligent collector for electric control cabinet

Info

Publication number: CN211181050U
Application number: CN202020365451.6U
Authority: CN
Inventors: 陈兵; 张国骞; 张昊; 张玮; 郭俊杰; 魏彤
Original assignee: Tianjin Ind Automation Instr Inst Co ltd
Current assignee: Tianjin Ind Automation Instr Inst Co ltd
Priority date: 2020-03-21
Filing date: 2020-03-21
Publication date: 2020-08-04
Anticipated expiration: 2030-03-21

Abstract

The utility model provides a based on automatically controlled cabinet comprehensive state intelligence collector, including collection module and CPU module, collection module and CPU module electric connection, collection module uploads the host computer in order to realize data communication through the CAN bus, CPU module electric connection has external system equipment, the CPU module passes through data interface with data transmission to external system equipment realization data transmission, the CPU module includes singlechip and CAN controller, singlechip and CAN controller electric connection, the singlechip is used for handling the data that want to send to the CAN bus and the data that receives from the CAN bus, the CAN controller is used for converting data into CAN bus level signal and converts the level signal on the CAN bus into data. The utility model overcomes independent shortcoming separately between each collection system in the present automatically controlled cabinet has improved the integrated level of automatically controlled cabinet.

Description

Comprehensive state intelligent collector for electric control cabinet

Technical Field

The utility model relates to an electric automatization technology field, concretely relates to automatically controlled cabinet comprehensive state intelligent acquisition ware.

Background

The field bus technology is a product of combining computer technology and automation technology, and is a new field of industrial control. The so-called fieldbus technology is a type of computer control network which is used in industrial fields as a serial communication network bus between a control center and field devices. The CAN bus is one of the widely used field bus standards at present, and the CAN bus, which is popular in the industry, is widely applied to various industries such as control equipment, industrial automation, traffic, medical instruments, buildings, environmental control and the like.

Because there are various interference sources and unforeseeable emergencies in the industrial control site, the whole system is required to have high anti-interference capability and error correction capability, and simultaneously, various analog and digital signals collected from the site need to be transmitted in time, and commands and data sent by an upper computer are responded in real time. This requires that the selected bus standard be accurate, reliable, robust and real-time. The traditional bus of the existing electric control cabinet has a plurality of limitations in the system design process, and has the defects of independent collection systems, low integration level, low universality and difficult function expansion.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to solve the problem that an automatically controlled cabinet integrated state intelligence collector is provided.

In order to solve the technical problem, the utility model discloses a technical scheme is: automatically controlled cabinet integrated state intelligence collector, including collection module and CPU module, collection module with CPU module electric connection, collection module uploads the host computer in order to realize data communication through the CAN bus, CPU module electric connection has external system equipment, CPU module through data interface with data transmission to external system equipment realizes data transmission, CPU module includes singlechip and CAN controller, the singlechip with CAN controller electric connection, the singlechip is used for handling the data that want to send to the CAN bus and the data of receiving from the CAN bus, the CAN controller is used for converting data into CAN bus level signal and converts the level signal on the CAN bus into data.

The utility model discloses in, preferably, collection module includes fire control power module, electric fire module, energy management module, female temperature module, humiture module and the switching value module of arranging, fire control power module electric fire module energy management module female arrange temperature module humiture module with the switching value module all disposes a CAN-ID, collection module is used for realizing data information's collection and passes through it CAN-ID is to CAN bus broadcast data, the CPU module is used for receiving the data of CAN bus to judge through CAN _ ID discernment this data with collection module corresponds the matching.

The utility model discloses in, preferably, singlechip electric connection has the DC/DC converter, the output of DC/DC converter pass through the AD converter with the singlechip links to each other, the AD converter is used for converting the analog signal that the collection module gathered into the digital signal and provides the singlechip.

The utility model discloses in, preferably, the singlechip through serial interface with collection module carries out data transmission, the singlechip with between the AD converter and the singlechip with all dispose the isolator that is used for realizing analog signal and digital signal isolation between the collection module.

In the present invention, preferably, the isolator is disposed between the CAN controller and the CAN transceiver.

In the present invention, preferably, the isolator is configured as an optical coupling isolation chip.

The utility model discloses in, preferably, the CAN controller includes interface logic management, send the buffer, receives the buffer, checks and accepts filter and CAN bus core module, interface logic management is used for the analysis to come from the operating instruction of singlechip and with the data transmission after the analysis extremely send the buffer, CAN bus core module is used for control data stream and carries out error detection and error handling on the bus, CAN bus core module passes through CAN transceiver with the data of reading out and transmits to the CAN bus on, via during the received data check and accept the filter and compare with received message identification code and judge whether receive, if receive then save receive in the buffer, receive the buffer and be used for the storage to receive and the approved information from the CAN bus.

In the present invention, preferably, the model of the CAN controller is set to SJA 1000.

In the present invention, preferably, the CAN bus core module includes a bit stream processor, bit timing logic, and error management logic.

In the present invention, preferably, what the CAN transceiver adopted is TJA1042 model transceiver, the STB terminal of the CAN transceiver is used for switching between the working mode and the standby mode, when the STB terminal is at a low level the CAN transceiver is in the working mode, the CAN transceiver transmits and receives data through the CANH terminal and the CAN L terminal.

The utility model has the advantages and positive effects that: the comprehensive state intelligent collector of the electric control cabinet collects fire extinguishing power system data, electric fire system data, energy management system data and important information of the environmental control cabinet, and provides data interfaces for external systems and external equipment so as to facilitate data sharing. The system adopts a modular design, data communication is carried out among all modules through a CAN bus, and the modules are respectively a CPU module, a fire-fighting power supply module, an electrical fire module, an energy management module, a busbar temperature monitoring module, a temperature and humidity acquisition module and a switching value acquisition module. The CPU module is a necessary module, and other modules can be combined according to actual needs, so that the defect that the acquisition systems in the conventional electric control cabinet are independent is overcome, and the integration level of the electric control cabinet is improved; in addition, the intelligent collector for the comprehensive state of the electric control cabinet has the advantages of modular structure and free combination, so that the electric control cabinet has a flexible data acquisition function. Moreover, fire control electrical power generating system, electric fire system, energy management system and automatically controlled cabinet in the past are independent flat system separately, supply of goods and maintain by different producers, and this system brings the function system into more than, has improved the integrated level of automatically controlled cabinet greatly, and the external system or external equipment of being convenient for carry out reading of information, the maintenance of being convenient for simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a circuit block diagram of the intelligent collector for comprehensive state of the electric control cabinet of the utility model;

FIG. 2 is a circuit block diagram of a single chip microcomputer of the intelligent collector for comprehensive state of the electric control cabinet of the utility model;

FIG. 3 is a schematic diagram of a CAN controller of the intelligent collector for the comprehensive state of the electric control cabinet of the utility model;

FIG. 4 is a schematic diagram of a CAN transceiver of the intelligent collector for comprehensive status of the electric control cabinet of the utility model;

fig. 5 is the utility model discloses an automatically controlled cabinet integrated state intelligent acquisition ware's collection module access system's flowchart.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to fig. 5, the utility model provides an automatically controlled cabinet integrated state intelligence collector, including collection module and CPU module, collection module and CPU module electric connection, collection module uploads the host computer in order to realize data communication through the CAN bus, CPU module electric connection has external system equipment, CPU module passes through data interface with data transmission to external system equipment and realizes data transmission, CPU module includes singlechip and CAN controller, singlechip and CAN controller electric connection, the singlechip is used for handling the data that want to send to the CAN bus and from the data that the CAN bus received, the CAN controller is used for converting data into CAN bus level signal and converts the level signal on the CAN bus into data.

In this embodiment, further, the collection module includes fire control power module, electric fire module, energy management module, female temperature module of arranging, humiture module and switching value module, fire control power module, electric fire module, energy management module, female temperature module of arranging, humiture module and switching value module all dispose a CAN-ID, the collection module is used for realizing data information's collection and broadcasts data to the CAN bus through its CAN-ID, the CPU module is used for receiving the data of CAN bus to judge this data and the collection module through CAN _ ID discernment and correspond the matching. The fire control power module, electric fire module, energy management module, female temperature module of arranging, humiture module and switching value module are used for realizing fire control power monitoring function, electric fire monitoring function, energy management function, female temperature monitoring function of arranging, humiture monitoring function and switching value collection function respectively, can expand other functional modules according to industrial production's actual demand in a flexible way.

In this embodiment, further, the single chip microcomputer is electrically connected to a DC/DC converter, an output end of the DC/DC converter is connected to the single chip microcomputer through an a/D converter, and the a/D converter is configured to convert an analog signal collected by the collection module into a digital signal and provide the digital signal to the single chip microcomputer. Because the single chip microcomputer receives digital quantity signals and the acquisition module acquires data by analog quantity signals, an A/D converter is arranged between the single chip microcomputer and the acquisition module, and the single chip microcomputer monitors the power supply DC/DC converter through the A/D converter.

In this embodiment, the single chip microcomputer performs data transmission with the acquisition module through the serial interface, and isolators for isolating analog signals from digital signals are respectively disposed between the single chip microcomputer and the a/D converter and between the single chip microcomputer and the acquisition module.

In the present embodiment, further, an isolator is disposed between the CAN controller and the CAN transceiver. An isolator is also arranged between the CAN controller and the CAN transceiver, so that mutual interference among all nodes in an acquisition module which adopts a CAN bus for communication is avoided, the fire-fighting power supply module, the electrical fire module, the energy management module, the busbar temperature module, the temperature and humidity module and the switching value module respectively perform their own functions, are independent of each other, and the anti-interference performance of the data transmission process is effectively ensured.

In this embodiment, further, the isolator is configured as an optically coupled isolation chip. The optical coupling isolation chip CAN realize electrical isolation between each node on the CAN bus, reduce electrical interference between each other, and protect the CAN controller.

In this embodiment, the CAN controller further includes an interface logic manager, a sending buffer, a receiving buffer, an acceptance filter, and a CAN bus core module, where the interface logic manager is configured to analyze an operation instruction from the single chip and transmit the analyzed data to the sending buffer, the CAN bus core module is configured to control a data stream and perform error detection and error processing on the bus, the CAN bus core module transmits the read data to the CAN bus through the CAN transceiver, when receiving the data, the acceptance filter compares the read data with a received message identification code to determine whether to receive the data, and if receiving the data, the data is stored in the receiving buffer, and the receiving buffer is configured to store information received from and approved by the CAN bus.

In the present embodiment, further, the model of the CAN controller is set to SJA 1000. The connecting line that CAN controller and the singlechip cooperation of SJA1000 model used is comparatively simple, has with low costs, and transmission distance is longer advantage.

In this embodiment, further, the CAN bus core module includes a bitstream processor, bit sequencing logic, and error management logic. The SJA1000 type CAN controller is an independent CAN controller chip, supports the CAN2.0a/B protocol, has a communication rate up to 1Mbps, is provided with a receiving and transmitting buffer area, and CAN automatically complete the analysis of the CAN-bus protocol. The difficulty of developing an interface between the SJA1000 and the single chip microcomputer is not high, and the single chip microcomputer can take the SJA1000 as an external memory and access the SJA1000 in a mode of accessing an external RAM.

In this embodiment, the CAN transceiver is a TJA1042 type transceiver, the STB terminal of the CAN transceiver is used for switching between an operating mode and a standby mode, when the STB terminal is at a low level, the CAN transceiver is in the operating mode, and the CAN transceiver realizes data transmission and reception through the CANH terminal and the CAN L terminal.

The utility model discloses a theory of operation and working process as follows: the system adopts a modular design, CAN mount the acquisition module to the CPUCPU module as required, and then carry out data communication between the modules by utilizing the CAN bus, particularly, after the acquisition module finishes data information acquisition, data are broadcasted to the CAN bus through respective independent CAN _ ID, the CPUCPU module receives the data on the CAN bus, and judges which type of acquisition module the received data are sent by identifying the CAN _ ID, and then the data are stored in a corresponding data storage area. Meanwhile, if the CPUCPU module receives a data reading request of the external system or the external device, the required data is sent to the external system or the external device through the data interface, and data sharing is completed.

In the system, the CPU module comprises a singlechip and a CAN controller. The single chip is responsible for processing data to be sent to the CAN bus and data received from the CAN bus, and the CAN controller is responsible for converting the data into CAN bus level signals and converting the level signals on the CAN bus into the data. Due to the adoption of the modularized design, a user CAN select a data acquisition module to be accessed according to actual requirements, and the specific process of distributing CAN _ ID for the newly accessed data acquisition module is as follows: firstly, the CAN _ IDs of the functional modules in the system are arranged in a specific CAN _ ID segment, for example, the CAN _ ID of the CPU module is 0x100, the CAN _ ID of the fire power supply module is 0x2, the CAN _ ID of the electrical fire module is 0x3, the CAN _ ID of the energy management module is 0x4, the CAN _ ID of the busbar temperature monitoring module is 0x5, the CAN _ ID of the in-cabinet temperature and humidity acquisition module is 0x6, and the CAN _ ID of the switching value acquisition module is 0x 7. The CPU module CAN judge which module of the data frame is sent according to the CAN _ ID of the received data frame; secondly, each acquisition module has two CAN _ IDs, one of which is used for transmitting data and the other is used for receiving data. The CAN _ ID of initial sending data of an acquisition module accessing a system for the first time is 'CAN _ ID range +0 xFF', and a CPU module sends a CAN _ ID configuration data frame to the initial receiving data CAN _ ID (address is CAN _ ID range +0xEE) of the acquisition module after receiving the data frame of the CAN _ ID. The sending data CAN _ ID after the module configuration is adjacent to the receiving data CAN _ ID, namely the sending data CAN _ ID is the receiving data CAN _ ID + 1; and after the acquisition module receives the CAN _ ID configuration data frame, transmitting data CAN _ ID and receiving data CAN _ ID immediately according to data configuration in the data frame, and storing the data CAN _ ID in an EEPROM (electrically erasable programmable read-only memory) so as to prevent the CAN _ ID data from being lost after the module is powered off.

The data section of the data frame sent by each acquisition module to the CPU module is 8 bytes, and the data of each acquisition module adopts an Intel coding format, and the data of each acquisition module is defined as a fire-fighting power supply module, a first path voltage (2 bytes) + a second path voltage (2 bytes) +0x00000000, an electrical fire module, a 4-20mA signal (2 bytes) +0x000000000000, an energy management module, a voltage (2 bytes) + a current (2 bytes) + a power (2 bytes) +0x0000, a bus bar temperature module, a L row temperature (2 bytes) + N row temperature (2 bytes) +0x0000, a temperature and humidity module, a cabinet temperature (2 bytes) + a cabinet humidity (2 bytes) +0x00000000, and a switching value module, a bit 0+ bit 1+ bit 2+ bit 3+ bit 4+ bit 5+ bit 6+ bit 7+0x 0000000000.

The CPU module distinguishes data analysis formats according to the range of the CAN _ ID, and places the analyzed data into a storage area, and carries out addressing on the data of the acquisition modules with different functions so as to facilitate the reading of an external system or external equipment through a data interface. The data interface adopts a Modbus _ RTU protocol with wider application, and after receiving a data reading request of an external system or external equipment, the CPU module carries out addressing in the storage area according to the data address and the number in the request and finally replies the data to the external system or the external equipment.

The intelligent comprehensive state collector for the electric control cabinet aims at collecting fire-fighting power supply system data, electric fire system data, energy management system data and important information of the environmental control cabinet, and provides a data interface for an external system and external equipment so as to facilitate data sharing. The system adopts a modular design, data communication is carried out among all modules through a CAN bus, and the modules are respectively a CPU module, a fire-fighting power supply module, an electrical fire module, an energy management module, a busbar temperature monitoring module, a temperature and humidity acquisition module and a switching value acquisition module. The CPU module is a necessary module, and other modules can be combined according to actual needs, so that the defect that the acquisition systems in the conventional electric control cabinet are independent is overcome, and the integration level of the electric control cabinet is improved; the intelligent collector for the comprehensive state of the electric control cabinet has the advantages of modular structure and free combination, so that the electric control cabinet has a flexible data collection function. Moreover, fire control electrical power generating system, electric fire system, energy management system and automatically controlled cabinet in the past are independent flat system separately, supply of goods and maintain by different producers, and this system brings the function system into more than, has improved the integrated level of automatically controlled cabinet greatly, and the external system or external equipment of being convenient for carry out reading of information, the maintenance of being convenient for simultaneously.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. Automatically controlled cabinet integrated status intelligence collector, its characterized in that, including collection module and CPU module, collection module with CPU module electric connection, collection module uploads the host computer in order to realize data communication through the CAN bus, CPU module electric connection has external system equipment, CPU module through data interface with data transmission to external system equipment realizes data transmission, CPU module includes singlechip and CAN controller, the singlechip with CAN controller electric connection, the singlechip is used for handling the data that want to send to the CAN bus and the data that receive from the CAN bus, the CAN controller is used for converting data into CAN bus level signal and converts the level signal on the CAN bus into data.

2. The intelligent electric control cabinet comprehensive state collector according to claim 1, wherein the collection module comprises a fire-fighting power supply module, an electrical fire module, an energy management module, a busbar temperature module, a temperature and humidity module and a switching value module, the fire-fighting power supply module, the electrical fire module, the energy management module, the busbar temperature module, the temperature and humidity module and the switching value module are all configured with a CAN-ID, the collection module is used for collecting data information and broadcasting data to a CAN bus through the CAN-ID, and the CPU module is used for receiving data of the CAN bus and judging whether the data is matched with the collection module correspondingly through CAN-ID identification.

3. The intelligent electric cabinet comprehensive state collector according to claim 1, wherein the single chip microcomputer is electrically connected with a DC/DC converter, an output end of the DC/DC converter is connected with the single chip microcomputer through an A/D converter, and the A/D converter is used for converting an analog quantity signal collected by the collection module into a digital quantity signal and supplying the digital quantity signal to the single chip microcomputer.

4. The intelligent acquisition device for the comprehensive state of the electric control cabinet according to claim 3, wherein the single chip microcomputer performs data transmission with the acquisition module through a serial interface, and isolators used for realizing the isolation of analog signals and digital signals are respectively arranged between the single chip microcomputer and the A/D converter and between the single chip microcomputer and the acquisition module.

5. The intelligent collector for comprehensive states of electric control cabinets according to claim 4, wherein the isolator is configured between the CAN controller and the CAN transceiver.

6. The intelligent electric cabinet comprehensive state collector according to claim 5, wherein the isolator is set to be an optical coupling isolation chip.

7. The intelligent acquisition unit for the comprehensive state of the electric control cabinet according to claim 1, wherein the CAN controller comprises an interface logic manager, a sending buffer, a receiving buffer, an acceptance filter and a CAN bus core module, the interface logic manager is used for analyzing an operation instruction from the single chip microcomputer and transmitting the analyzed data to the sending buffer, the CAN bus core module is used for controlling data flow and executing error detection and error processing on a bus, the CAN bus core module transmits the read data to the CAN bus through the CAN transceiver, when receiving the data, the acceptance filter compares the data with a received message identification code to judge whether the data is received, and if the data is received, the data is stored in the receiving buffer, and the receiving buffer is used for storing information which is received from the CAN bus and is approved.

8. The electric control cabinet comprehensive state intelligent collector as claimed in claim 1, wherein the CAN controller is provided with a model number of SJA 1000.

9. The intelligent collector of the comprehensive state of the electric control cabinet according to claim 1, wherein the CAN bus core module comprises a bit stream processor, bit sequential logic and error management logic.

10. The intelligent collector for comprehensive states of electric control cabinets according to claim 1, wherein the CAN transceiver is a TJA1042 model transceiver, an STB terminal of the CAN transceiver is used for switching between an operating mode and a standby mode, when the STB terminal is at a low level, the CAN transceiver is in the operating mode, and the CAN transceiver transmits and receives data through a CANH terminal and a CAN L terminal.