CN214372840U

CN214372840U - Multichannel weighing controller and weighing control system

Info

Publication number: CN214372840U
Application number: CN202120026418.5U
Authority: CN
Inventors: 戴达初
Original assignee: Zhuhai Fengrun Automation Technology Co ltd
Current assignee: Zhuhai Fengrun Automation Technology Co ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-10-08
Anticipated expiration: 2031-01-04

Abstract

The utility model discloses a multichannel weighing controller and weighing control system, which comprises a housin, the weighing sensor interface, first extension guide rail, second extension guide rail and extension interface, be provided with the human-computer interaction district on the casing, install first display screen and first operation button in the human-computer interaction district, a plurality of weighing sensor interfaces set up the first side at the casing, first extension guide rail sets up the second side at the casing, second extension guide rail and first extension guide rail adaptation, the setting just is located the third side relative with the second side on the casing, a plurality of extension interfaces set up the fourth side at the casing. The first extension guide rail and the second extension guide rail on the shell are mutually adaptive, when the multichannel weighing controller is used, the latter multichannel weighing controller can be spliced with the former multichannel weighing controller through the matching of the first extension guide rail and the second extension guide rail, and an extension bus is connected to an extension interface, so that the communication between the two multichannel weighing controllers is realized, and the cascade extension and integration are facilitated.

Description

Multichannel weighing controller and weighing control system

Technical Field

The utility model relates to a measuring equipment technical field, in particular to multichannel weighing controller and weighing control system.

Background

In industrial processes, load cells are required to weigh materials, for example, in the chemical industry, in reaction vessels and raw material silos. In practical application, the number of the reaction kettles and the raw material bins in one plant area is often hundreds of weighing sensors. At present, international PLC manufacturers produce multi-channel weighing modules, and can receive signals of a plurality of weighing sensors through the multi-channel weighing modules, but because the number of the multi-channel weighing modules which can be installed on a rack is limited, the number requirement of the whole plant cannot be met even if the multi-channel weighing modules are installed completely, and the price is high. The weight transmitters produced by domestic PLC manufacturers are satisfactory in quantity, but have the disadvantage of inconvenience in system integration, for example, when weight data of the weight transmitters are read, all the weight transmitters need to be polled, the communication management procedure of the PLC is complicated, the real-time performance is poor, the transverse size of the weight transmitter is large, and the like.

Therefore, the weighing mode still mainly passes through the PLC controller of well-known brand + the changer of weighing, and the changer of weighing is divided into two types of communication formula and analog type, and the communication formula means that the PLC controller communicates with a plurality of weight transmitters through the communication bus, and the analog type means that the PLC controller communicates with a plurality of weight transmitters respectively through the analog line. For the PLC, the number of slave stations of the bus is limited, bus protocols such as Profibus are not open, the development difficulty is high, and the price of a protocol chip is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a multichannel weighing controller and weighing control system can concatenate through expansion bus, is convenient for cascade the extension and integrate.

On the first hand, the multichannel weighing controller according to the embodiment of the utility model comprises a shell, a man-machine interaction area is arranged in the shell, and a first display screen and a first operation key are arranged in the man-machine interaction area; a plurality of load cell interfaces disposed on a first side of the housing; a first extension rail disposed at a second side of the housing; the second expansion guide rail is matched with the first expansion guide rail, is arranged on the shell and is positioned on a third side surface opposite to the second side surface; and the plurality of expansion interfaces are arranged on the fourth side surface of the shell.

According to the utility model discloses multichannel weighing controller has following beneficial effect at least:

first extension guide rail and the mutual adaptation of second extension guide rail on the casing, when using, the back multichannel weighing controller can splice with the preceding multichannel weighing controller through the cooperation of first extension guide rail and second extension guide rail to connect expansion bus at the expansion interface, thereby realize the communication between two multichannel weighing controllers, be convenient for cascade extension and integration.

According to some embodiments of the invention, the fifth side of the housing is further provided with a heat dissipation window.

According to some embodiments of the utility model, be provided with the processing unit in the casing, the processing unit respectively with first display screen first operation button the weighing sensor interface with extended interface electric connection.

According to some embodiments of the invention, the processing unit employs an embedded DSP.

According to some embodiments of the utility model, the weighing sensor interface with electric connection has short-circuit protection circuit between the processing unit.

In a second aspect, according to the present invention, a weighing control system includes: a multi-channel weighing controller of the above partial or whole structure; the communication coupler is provided with a third extension guide rail matched with the first extension guide rail or the second extension guide rail and is connected with the multichannel weighing controller through the third extension guide rail, a power supply interface, a field bus interface and an extension bus interface are arranged on the communication coupler, and the extension bus interface is connected with a communication extension bus and is in communication connection with the extension interface through the communication extension bus.

According to the utility model discloses weighing control system has following beneficial effect at least:

the communication coupler communicates with an external PLC through a field bus interface, and communicates with the multichannel weighing controller through an expansion bus interface and a communication expansion bus, a first expansion guide rail and a second expansion guide rail of the multichannel weighing controller are mutually matched, when the multichannel weighing controller is used, the next multichannel weighing controller can be spliced with the previous multichannel weighing controller through the matching of the first expansion guide rail and the second expansion guide rail, and the expansion bus is connected to the expansion interface, so that the communication between the two multichannel weighing controllers is realized, and the multichannel weighing controller is convenient to expand and integrate.

According to some embodiments of the utility model, still be provided with second display screen and second operation button on the communication coupler.

According to some embodiments of the invention, the field bus interface employs at least one of a Profibus interface, a Profinet interface, an ethernet interface, or a CC-Link interface.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a multi-channel weighing controller according to an embodiment of the present invention;

FIG. 2 is a functional block diagram of the multi-channel weighing controller shown in FIG. 1;

fig. 3 is a schematic structural diagram of a weighing control system according to an embodiment of the present invention;

fig. 4 is a functional block diagram of the weighing control system shown in fig. 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the present embodiment discloses a multi-channel weighing controller, which includes a housing 110, a weighing sensor interface 120, a first extension rail 130, a second extension rail (not shown), and an extension interface 140, wherein a human-computer interaction area is disposed on the housing 110, a first display screen 111 and a first operation key 112 are mounted in the human-computer interaction area, the plurality of weighing sensor interfaces 120 are disposed on a first side surface of the housing 110, the first extension rail 130 is disposed on a second side surface of the housing 110, the second extension rail is adapted to the first extension rail 130 and is disposed on a third side surface of the housing 110 opposite to the second side surface, and the plurality of extension interfaces 140 are disposed on a fourth side surface of the housing 110. The multichannel weighing controller of this embodiment makes full use of the outer wall area of casing 110, and simple structure, compactness are favorable to dwindling the volume.

When the multichannel weighing controller is used, the latter multichannel weighing controller can be spliced with the former multichannel weighing controller through the matching of the first extension guide rail 130 and the second extension guide rail, and an extension bus (not shown) is connected to the extension interface 140, so that the communication between the two multichannel weighing controllers is realized, and the cascade extension and integration are facilitated.

In order to improve the heat dissipation effect of the multi-channel weighing controller, the heat dissipation window 150 is further disposed on the fifth side of the housing 110, and the heat dissipation window 150 can accelerate the heat dissipation effect of the electronic component in the housing 110, so as to avoid heat accumulation and loss of the electronic component. The processing unit 160 is disposed in the housing 110, and the processing unit 160 is electrically connected to the first display screen 111, the first operation key 112, the weighing sensor interface 120, and the expansion interface 140. The processing unit 160 can perform numerical calibration through standard signals when leaving a factory, support weight-free calibration, and can be replaced and used when replaced. The processing unit 160 of this embodiment adopts an embedded DSP, has the characteristics of low power consumption and low heat, does not need a fan to assist in heat dissipation, and is beneficial to simplifying the product structure and reducing the volume.

In order to improve the reliability of the product, a short-circuit protection circuit 121 is electrically connected between the load cell interface 120 and the processing unit 160, wherein the short-circuit protection circuit 121 may adopt a short-circuit protection resistor, and can avoid impact and damage to other circuits caused by an overcurrent generated during short-circuit, thereby improving the reliability of the product.

Referring to fig. 3 and 4, the present embodiment further discloses a weighing control system, which includes a communication coupler 200 and a multi-channel weighing controller with the above structure partially or completely, the communication coupler 200 is provided with a third extension rail (not shown) adapted to the first extension rail 130 or the second extension rail, and is connected to the multi-channel weighing controller through the third extension rail, the communication coupler 200 is provided with a power interface 210, a field bus interface 220, and an extension bus interface, and the extension bus interface is connected to a communication extension bus and is connected to the extension interface 140 through the communication extension bus. The first extension rail 130, the second extension rail and the third extension rail all adopt DIN35 standard rails. It should be noted that the expansion bus interface and the expansion interface 140 may adopt interfaces of the same type, and correspondingly, the communication expansion bus and the expansion bus may adopt buses of the same type.

The communication coupler 200 is communicated with an external PLC through a field bus interface 220, and is communicated with a multichannel weighing controller through an expansion bus interface and a communication expansion bus, a first expansion guide rail 130 and a second expansion guide rail of the multichannel weighing controller are mutually matched, when the multichannel weighing controller is used, the latter multichannel weighing controller can be spliced with the former multichannel weighing controller through the matching of the first expansion guide rail 130 and the second expansion guide rail, and the expansion bus is connected to an expansion interface 140, so that the communication between the two multichannel weighing controllers is realized, and the expansion and integration are facilitated.

In this embodiment, outside PLC only needs to communicate with communication coupler 200, and communication coupler 200 can acquire data such as operating condition, configuration information and weight information of a plurality of multichannel weighing controller that cascade to once only packing is sent, and is convenient fast, and outside PLC can discern the address of communication when multichannel weighing controller cascades the extension moreover, for example: the communication address of the communication coupler 200 is set as a 0# address, the communication address of the first multi-channel weighing controller cascaded with the communication coupler 200 is added with 1, the communication address of the next cascaded multi-channel weighing controller is continuously added with 1, and the like, so that automatic identification and configuration of the cascaded extended multi-channel weighing controller can be realized, and the use mode is simple and quick.

In order to facilitate observation and operation of the communication coupler 200, a second display screen 201 and a second operation key 202 are further disposed on the communication coupler 200, and the second display screen 201 can display state information, configuration information, alarm information and the like of the communication coupler 200.

According to different requirements of practical application, the fieldbus interface 220 adopts at least one of a Profibus interface, a Profinet interface, an ethernet interface or a CC-Link interface, and can support multiple popular interface types, which is beneficial to improving the applicability of products.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A multi-channel weighing controller, comprising:

the mobile phone comprises a shell (110) and a mobile phone, wherein a man-machine interaction area is arranged in the shell, and a first display screen (111) and a first operation key (112) are arranged in the man-machine interaction area;

a plurality of load cell interfaces (120) disposed on a first side of the housing (110);

a first extension rail (130) disposed at a second side of the housing (110);

a second extension rail adapted to the first extension rail (130), provided on the housing (110) at a third side opposite to the second side;

a plurality of expansion interfaces (140) disposed on a fourth side of the housing (110).

2. A multi-channel weighing controller as claimed in claim 1, characterised in that the fifth side of the housing (110) is further provided with a heat dissipating window (150).

3. The multi-channel weighing controller of claim 1, wherein a processing unit (160) is disposed in the housing (110), and the processing unit (160) is electrically connected to the first display screen (111), the first operation key (112), the load cell interface (120) and the expansion interface (140), respectively.

4. Multi-channel weighing controller according to claim 3, wherein the processing unit (160) employs an embedded DSP.

5. Multi-channel weighing controller according to claim 3 or 4, wherein a short-circuit protection circuit (121) is electrically connected between the load cell interface (120) and the processing unit (160).

6. A weighing control system, comprising:

a multi-channel weighing controller as claimed in any one of claims 1 to 5;

the communication coupler (200) is provided with a third extension guide rail matched with the first extension guide rail (130) or the second extension guide rail and connected with the multichannel weighing controller through the third extension guide rail, a power supply interface (210), a field bus interface (220) and an extension bus interface are arranged on the communication coupler (200), and the extension bus interface is connected with a communication extension bus and is in communication connection with the extension interface (140) through the communication extension bus.

7. The weighing control system according to claim 6, wherein the communication coupler (200) is further provided with a second display screen (201) and a second operation key (202).

8. Weighing control system according to claim 6 or 7, characterized in that the field bus interface (220) employs at least one of a Profibus interface, a Profinet interface, an ethernet interface or a CC-Link interface.