A multi-channel digital temperature control system

Abstract

This utility model relates to a multi-channel digital temperature control system, including a main controller and a set of output execution controllers connected to the main controller. The main controller has a built-in control circuit board, a set of temperature probe sockets, and a set of trigger pulse output terminals connected to the control circuit board. Each temperature probe socket is equipped with a temperature probe that is independently connected to the control circuit board. The main controller also has an RS485 communication terminal connected to the control circuit board, and the output execution controllers are connected to the RS485 communication terminal. The output execution controllers have two output modes: zero-over-voltage adjustment and phase-shift voltage adjustment. This utility model effectively solves the problem that existing temperature controllers are all independent and do not achieve the control of multiple temperature controllers through a separate main control device, thus failing to form a temperature control system.

Description

Technical Field

[0001] This utility model relates to the field of temperature control, and in particular to a multi-channel digital temperature control system. Background Technology

[0002] Temperature controllers are widely used in equipment requiring multi-point heating with varying temperature requirements at each point, such as sheet forming machinery (vacuum forming machines) and bag manufacturing machinery. Currently, most integrated multi-channel controllers on the market use a voltage regulation and stabilization method, which stabilizes the voltage based on a set target value. This control method is not directly related to the actual temperature value; regardless of temperature changes in the heating furnace area, the controller outputs a fixed voltage. However, products manufactured by such machinery require more stable temperatures for better quality. Temperature instability leads to excessive defective and scrap products, especially in high-speed machines. The faster the production speed, the more prone it is to temperature instability, as higher speeds dissipate heat more quickly.

[0003] Furthermore, the load (heater) damage detection function on mechanical equipment is problematic because the voltage regulator controllers currently used in the market achieve voltage regulation by measuring and calculating the feedback voltage on the load. Due to the non-isolated contact characteristic of the thyristor's "switching function," meaning that as long as there is input voltage, it will have leakage current and generate voltage output (in no-load state), even when the load is open-circuited, it will still "output voltage." This can cause the controller to misjudge or fail to judge, resulting in no alarm. As a result, even when the heater load is already open-circuited (not heating), production continues normally. By the time the problem is discovered, a large number of defective or scrap products may have already been produced, resulting in significant material waste and energy loss.

[0004] At the same time, the existing temperature controllers are all independent and do not have a separate master control device to control multiple temperature controllers, so they cannot form a temperature control system. Utility Model Content

[0005] The purpose of this invention is to provide a multi-channel digital temperature control system to solve the problem that existing temperature controllers are all independent and do not have a separate main control device to control multiple temperature controllers, thus failing to form a temperature control system.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a multi-channel digital temperature control system, including a main controller and a set of output execution controllers connected to the main controller; the main controller has a built-in control circuit board, and the main controller is equipped with a set of temperature probe sockets and a set of trigger pulse output terminals connected to the control circuit board. Each temperature probe socket is equipped with a temperature probe that is independently connected to the control circuit board; the main controller is also connected to the control circuit board via an RS485 communication terminal, and the output execution controllers are connected to the RS485 communication terminal; the output execution controllers are equipped with two output modes: zero-over-voltage power adjustment and phase-shift voltage adjustment.

[0007] To facilitate external communication and connection with the host computer, the main controller is also equipped with an Ethernet port that connects to the control circuit board.

[0008] To drive the SSR-port DV and SKKS modules, each temperature probe and control circuit board is independently connected, and the trigger pulse output terminal is used to connect to the SSR-port DV and SKKS modules.

[0009] To improve the performance of the output actuator, the output actuator includes a left base and a right base. A detachable main housing is located between the left and right bases. A circuit board is installed inside the main housing. The upper surface of the main housing has three-phase input terminals and multiple output terminals that connect to the circuit board. Signal terminals that connect to the circuit board are located on the left and right bases. Each of the left and right bases has a set of external mounting holes. A set of fuse slots is located on the upper surface of the main housing. Each fuse slot has an openable and closable waterproof sealing cover. Each fuse slot has a set of fuse holders, and each fuse holder has a fuse. Each output terminal in the multiple output terminals corresponds to a fuse holder.

[0010] To improve heat dissipation performance, a heat sink is installed inside the main housing, and the circuit board is mounted on the heat sink. A set of cooling fans is also installed inside the main housing, and an air outlet adapted to the cooling fans is provided on one side of the outer wall of the main housing.

[0011] To achieve multi-output control and independent protection for each output, the multi-output terminals are divided into three groups corresponding to the three-phase input terminals, with each group including five output terminals. Each group of multi-output terminals corresponds to a fuse slot, and each fuse slot is equipped with five fuse holders. Each output terminal is connected to a fuse.

[0012] To facilitate fuse replacement, a set of spare holders is provided on one side of the outer wall of the main housing, and each spare holder is equipped with a spare fuse.

[0013] To achieve air isolation at the bottom of the circuit board and further improve heat dissipation, a positioning seat is installed inside the left and right bases, and the bottom ends of the circuit board are mounted on the positioning seats.

[0014] There are three controllable chips and three rectifier chips. Any two controllable modules can be combined into an anti-parallel thyristor module, and any two can be combined into an AC to DC module.

[0015] The beneficial effects of this utility model are as follows: By connecting multiple output actuators through the main controller, multiple output actuators can be controlled to form a complete temperature control system. At the same time, the SSR-port DV or SKKS module can be driven through the trigger pulse output terminal, thereby improving the functionality of the product.

[0016] Each output controller can also be used independently of the main controller, increasing the applicability of the entire product.

[0017] A set of independent temperature probes can achieve independent acquisition of multiple sets of data. By selecting different temperature probes, the accuracy of the data can be further improved, and the precision of temperature control can be enhanced.

[0018] The output actuator controller features multiple output terminals, enabling multiple outputs. Fuse slots with waterproof covers enhance their sealing and waterproofing. Each output terminal corresponds to a single fuse, ensuring independent protection for each output and preventing a problem in one output from affecting the others. The fifteen output terminals are divided into three groups of five, allowing for multi-output and independent control within each group. Each group has a corresponding fuse slot, further enhancing independence. Five fuse holders in each group further improve fuse independence, resulting in fifteen independent outputs with independent protection. This prevents a problem in one output from affecting the others, improving the continuous operation of the output actuator controller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the output execution controller.

[0020] Figure 2 This is a schematic diagram of the main controller.

[0021] In the diagram, 1. Main housing, 2. Left base, 3. Right base, 4. Three-phase input terminal, 5. Multi-channel output terminal, 6. Waterproof sealing cover, 7. Signal terminal, 8. Air outlet, 9. External mounting hole, 10. Spare card slot, 11. Spare fuse, 21. Main controller, 22. Temperature probe, 23. Trigger pulse output terminal, 24. RS485 communication terminal, 25. Ethernet port. Detailed Implementation

[0022] Examples, such as Figure 1 , Figure 2 The multi-channel digital temperature control system shown includes a main controller 21 and a set of output execution controllers connected to the main controller 21. The main controller 21 has a built-in control circuit board, a set of temperature probe sockets and a set of trigger pulse output terminals 23 connected to the control circuit board, and each trigger pulse output terminal 23 is independent of each other. Each temperature probe socket is equipped with a temperature probe 22 that is independently connected to the control circuit board. The main controller 21 is also connected to the control circuit board via an RS485 communication terminal 24, and the output execution controllers are connected to the RS485 communication terminal 24. The output execution controllers are equipped with two output modes: zero-over-power adjustment and phase-shift voltage adjustment.

[0023] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms “a” and “an” as used herein are also intended to include the plural. It should also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, without excluding the presence or addition of one or more other features, integers, steps, operations, units, components, and / or combinations thereof.

[0026] The following combination Figure 1 , Figure 2 The concept of this utility model will be further elaborated.

[0027] A multi-channel digital temperature control system includes a main controller 21 and a set of output execution controllers connected to the main controller 21. The main controller 21 has a built-in control circuit board, a set of temperature probe sockets and a set of trigger pulse output terminals 23 connected to the control circuit board. Each temperature probe socket is equipped with a temperature probe 22 that is independently connected to the control circuit board. The main controller 21 also has an RS485 communication terminal 24 connected to the control circuit board, and the output execution controllers are connected to the RS485 communication terminal 24. The output execution controllers are equipped with two output modes: zero-over-power adjustment and phase-shift voltage adjustment.

[0028] The main controller 21 is also equipped with an Ethernet port 25 that connects to the control circuit board.

[0029] Each temperature probe 22 is independently connected to the control circuit board, and the trigger pulse output terminal 23 is used to connect to the SSR-port DV and SKKS modules. Different models of each temperature probe 22 can be selected as needed.

[0030] The output execution controller includes a left base 2 and a right base 3. A detachable main housing 1 is provided between the left base 2 and the right base 3. A circuit board is installed inside the main housing 1. The upper surface of the main housing 1 is provided with three-phase input terminals 4 and multiple output terminals 5 connected to the circuit board. Signal terminals 7 connected to the circuit board are provided on the left base 2 and the right base 3. Each of the left base 2 and the right base 3 is provided with a set of external mounting holes 9. A set of fuse slots is provided on the upper surface of the main housing 1. Each fuse slot is provided with a waterproof sealing cover 6 that can be opened and closed. Each fuse slot is provided with a set of fuse holders, and each fuse holder is provided with a fuse. Each output terminal in the multiple output terminals 5 corresponds to a fuse holder.

[0031] A heat sink is installed inside the main housing 1, and the circuit board is installed on the heat sink; a set of cooling fans is also installed inside the main housing 1, and an air outlet 8 adapted to the cooling fans is provided on one side of the outer wall of the main housing 1.

[0032] The multi-output terminal 5 corresponds to the three-phase input terminal 4 and is divided into three groups, each group including five output terminals; each group of multi-output terminals 5 corresponds to a fuse slot, and each fuse slot is provided with five fuse holders; each output terminal is connected to a fuse.

[0033] A set of spare card holders 10 is provided on one side of the outer wall of the main housing 1, and each spare card holder 10 is provided with a spare fuse 11.

[0034] The specific structure of the fuse holder and the spare holder 10 refers to the existing structure and is not an innovation of this utility model, so it will not be described further here.

[0035] A positioning seat is provided in the left base 2 and the right base 3 respectively, and the bottom ends of the circuit board are mounted on the positioning seats.

[0036] The above embodiments are not intended to limit the scope of the invention, but rather to illustrate it. The scope of this invention is determined by the scope of the claims, not by the description itself, and should be interpreted as including all differences within the equivalent scope of this invention. Any non-substantial improvements made using the inventive concept and technical solution of this invention; or the direct application of the above-mentioned concept and technical solution of this invention to other situations without modification, are all within the protection scope of this invention.

Claims

1. A multi-channel digital temperature control system, characterized in that: It includes a main controller and a set of output execution controllers connected to the main controller; the main controller has a built-in control circuit board, a set of temperature probe sockets and a set of trigger pulse output terminals connected to the control circuit board, and each temperature probe socket is equipped with a temperature probe that is independently connected to the control circuit board; the main controller also has an RS485 communication terminal connected to the control circuit board, and the output execution controllers are connected to the RS485 communication terminal; the output execution controllers are equipped with two output modes: zero-over-power adjustment and phase-shift voltage adjustment.

2. The multi-channel digital temperature control system according to claim 1, characterized in that: The main controller is also equipped with an Ethernet port that connects to the control circuit board.

3. The multi-channel digital temperature control system according to claim 1, characterized in that: Each temperature probe and control circuit board is connected independently, and the trigger pulse output terminal is used to connect to the SSR-port DV and SKKS modules.

4. The multi-channel digital temperature control system according to any one of claims 1 to 3, characterized in that: The output actuator includes a left base and a right base, with a detachable main housing located between the left and right bases. A circuit board is housed within the main housing, and the upper surface of the main housing has three-phase input terminals and multiple output terminals connected to the circuit board. Signal terminals connected to the circuit board are located on both the left and right bases. Each of the left and right bases has a set of external mounting holes. A set of fuse slots is located on the upper surface of the main housing, and each fuse slot has an openable and closable waterproof sealing cover. Each fuse slot contains a fuse holder, and each fuse holder contains one fuse. Each output terminal in the multiple output terminals corresponds to one fuse holder.

5. The multi-channel digital temperature control system according to claim 4, characterized in that: A heat sink is installed inside the main housing, and the circuit board is mounted on the heat sink. A set of cooling fans is also installed inside the main housing, and an air outlet adapted to the cooling fans is provided on one side of the outer wall of the main housing.

6. The multi-channel digital temperature control system according to claim 5, characterized in that: The multi-output terminals correspond to three-phase input terminals in three groups, each group including five output terminals; each group of multi-output terminals corresponds to a fuse slot, and each fuse slot is equipped with five fuse holders; each output terminal is connected to a fuse.

7. The multi-channel digital temperature control system according to claim 6, characterized in that: A set of spare card slots is provided on one side of the outer wall of the main housing, and each spare card slot is equipped with a spare fuse.

8. The multi-channel digital temperature control system according to claim 7, characterized in that: A positioning seat is installed inside the left and right bases, and the bottom ends of the circuit board are mounted on the positioning seats.

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