Yarn doffing controller circuit

Abstract

The utility model discloses a yarn doffing controller circuit which comprises a doffing signal input circuit and a driving output circuit, the input end of the doffing signal input circuit is connected with a switching value sensor, and the output end of the doffing signal input circuit is connected with the input end of a controller. The input end of the driving output circuit is electrically connected with the output end of the controller, the output end of the driving output circuit is connected with external equipment, the doffing signal input circuit comprises a plurality of signal input units and a register unit, and each signal input unit comprises a diode, an input photoelectric coupler and an input resistor. According to the yarn doffing controller circuit disclosed by the utility model, the doffing signal input circuit and the driving output circuit are linked, the product is more stable in use through circuit improvement, and the anti-interference capability is stronger through adding an optocoupler.

Description

Technical Field

[0001] The utility model belongs to the field of yarn doffing control technology, and in particular relates to a yarn doffing controller circuit. Background Art

[0002] With the increasingly fierce market competition and the increase in market demand, the weight of each yarn in the textile and chemical fiber industry requires higher and higher precision. Due to the environment and process products in the textile and chemical fiber workshop, a large amount of static electricity is generated, and the yarn doffing controller circuit designed in the early stage is easy to malfunction due to static interference, causing a lot of economic losses.

[0003] Therefore, it is necessary to design a yarn doffing control circuit that can avoid false operation due to electrostatic interference. Utility Model Content

[0004] The main purpose of the utility model is to provide a yarn doffing controller circuit, which is linked by a doffing signal input circuit and a drive output circuit. Through circuit improvement, the product is more stable in use, and the anti-interference ability is stronger by adding an optical coupler.

[0005] To achieve the above purpose, the utility model provides a yarn doffing controller circuit, including a doffing signal input circuit and a drive output circuit, the input end of the doffing signal input circuit is connected to a (doffing) switch sensor (for subsequent CPU to determine whether the doffing is completed) and the output end of the doffing signal input circuit is connected to the input end of the controller (CPU), the input end of the drive output circuit is electrically connected to the output end of the controller and the output end of the drive output circuit is connected to an external device (for executing actions, thereby cutting, alarming, protection, etc.), wherein:

[0006] The doffing signal input circuit includes a plurality of signal input units and register units, each of which includes a diode, an input photocoupler, and an input resistor, the anode of the diode is connected to an external input signal (of a switch quantity sensor) and the cathode of the diode is electrically connected to the anode of the input photocoupler, and the cathode of the input photocoupler is grounded through an input resistor; the register unit includes a plurality of registers, the collector of the input photocoupler is electrically connected to the input end of a corresponding matching register and the output end of the register is connected to the input end of a controller;

[0007] The drive output circuit includes a plurality of signal output units, each of which includes a drive resistor, a transistor and an output photocoupler, one end of the drive resistor is connected to the output end of the controller and the other end of the drive resistor is electrically connected to the base of the transistor, the emitter of the transistor is grounded and the collector of the transistor is electrically connected to the cathode of the output photocoupler, and the emitter of the output photocoupler is connected to an external device.

[0008] As a further preferred technical solution of the above technical solution, the collector of the input photoelectric coupler is also connected to the first power supply terminal (3.3V) through a resistor and the emitter of the input photoelectric coupler is grounded.

[0009] As a further preferred technical solution of the above technical solution, the collector of the output photoelectric coupler is connected to the second power supply terminal (24V) through a resistor.

[0010] As a further preferred technical solution of the above technical solution, the anode of the output photocoupler is connected to the power supply terminal VCC through a resistor.

[0011] As a further preferred technical solution of the above technical solution, the number of the signal input units and the number of the signal output units are both 24 BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a circuit diagram of the first part (including 12 inputs) of a signal input unit of a yarn doffing controller circuit of the utility model.

[0013] Figure 2 It is a circuit diagram of the second part (including 12 inputs) of a signal input unit of a yarn doffing controller circuit of the utility model.

[0014] Figure 3 The utility model discloses a register unit circuit diagram of a yarn doffing controller circuit.

[0015] Figure 4 It is a circuit diagram of the first part (including 12 outputs) of a signal output unit of a yarn doffing controller circuit of the utility model.

[0016] Figure 5 It is a circuit diagram of the second part (including 12 outputs) of a signal output unit of a yarn doffing controller circuit of the utility model. DETAILED DESCRIPTION

[0017] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0018] The utility model discloses a yarn doffing controller circuit. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0019] In the embodiments of the present invention, those skilled in the art note that the controller, switch quantity sensor, external device, etc. involved in the present invention may be regarded as prior art.

[0020] Preferred embodiments.

[0021] like Figure 1-5 As shown, the utility model discloses a yarn doffing controller circuit, including a doffing signal input circuit and a drive output circuit, the input end of the doffing signal input circuit is connected to a (doffing) switch sensor (for subsequent CPU to determine whether doffing is completed) and the output end of the doffing signal input circuit is connected to the input end of the controller (CPU), the input end of the drive output circuit is electrically connected to the output end of the controller and the output end of the drive output circuit is connected to an external device (for executing actions, thereby cutting, alarming, protection, etc.), wherein:

[0022] The doffing signal input circuit includes a plurality of signal input units and register units, each of which includes a diode, an input photocoupler, and an input resistor, the anode of the diode is connected to an external input signal (of a switch quantity sensor) and the cathode of the diode is electrically connected to the anode of the input photocoupler, and the cathode of the input photocoupler is grounded through an input resistor; the register unit includes a plurality of registers, the collector of the input photocoupler is electrically connected to the input end of a corresponding matching register and the output end of the register is connected to the input end of a controller;

[0023] The drive output circuit includes a plurality of signal output units, each of which includes a drive resistor, a transistor and an output photocoupler, one end of the drive resistor is connected to the output end of the controller and the other end of the drive resistor is electrically connected to the base of the transistor, the emitter of the transistor is grounded and the collector of the transistor is electrically connected to the cathode of the output photocoupler, and the emitter of the output photocoupler is connected to an external device.

[0024] Specifically, the collector of the input photocoupler is also connected to the first power supply terminal (3.3V) through a resistor and the emitter of the input photocoupler is grounded.

[0025] More specifically, the collector of the output photocoupler is connected to the second power supply terminal (24V) via a resistor.

[0026] Furthermore, the anode of the output photocoupler is connected to the power supply terminal VCC via a resistor.

[0027] Furthermore, the number of the signal input units and the number of the signal output units are both 24.

[0028] For the doffing signal input circuit: the external input signals IN_1-IN12, 2IN_1-2IN12 are connected to the optocoupler through the 1N4007 diode (D7-D18, D20-D32) and then connected to the ground. The external input signal is isolated by the optocoupler and then input into three 74HC165D chips, and the 74HC165D chip is connected to the CPU. The role of the diode is to prevent reverse connection, the role of the optocoupler is to isolate and prevent interference, and the role of the 74HC165 is to convert the parallel input to the serial input point with a smaller CPU IO pin. The external signal is a switch sensor to detect whether the doffing is completed, and then transmitted to the CPU.

[0029] As an example, Figure 1 and 3 As shown, the signal input unit includes a diode D20 and a photocoupler U23. The external input signal IN_1 is electrically connected to the anode of the photocoupler U23 through the diode D20. The collector of the photocoupler U23 is electrically connected to the pin 11 of the register U35. The pins 1, 2, and 9 of the register U35 are connected to the controller.

[0030] For the drive output circuit: CPU directly drives 1-12, 13-24, a total of 24 channels, CPU IO pins are connected in series with 1K resistors (R91-R120, R152-R181) to drive S8050 transistors (Q2-Q13, Q14-Q25) and then connected to optocouplers (U37-U48, U51-U62). The purpose of driving the optocoupler through the transistor instead of directly driving the optocoupler is to reduce the CPU IO output current and reduce the CPU power consumption. If the yarn is abnormal, the output signal can control the cutter to cut and alarm. Using optocouplers to isolate the 24V circuit can effectively resist interference.

[0031] As an example, Figure 4As shown, the signal output unit includes a transistor Q14 and a photocoupler U35, the base of the transistor Q14 is connected to the output signal of the controller through a resistor R152, the collector of the transistor Q14 is electrically connected to the cathode of the photocoupler U51, and the emitter of the photocoupler U51 is connected to an external device.

[0032] It is worth mentioning that the technical features such as controllers, switch sensors and external devices involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0033] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A yarn doffing controller circuit, characterized in that: It comprises a doffing signal input circuit and a drive output circuit, wherein the input end of the doffing signal input circuit is connected to a switch sensor and the output end of the doffing signal input circuit is connected to the input end of a controller, the input end of the drive output circuit is electrically connected to the output end of the controller and the output end of the drive output circuit is connected to an external device, wherein: The doffing signal input circuit includes a plurality of signal input units and register units, each of which includes a diode, an input photocoupler, and an input resistor, the anode of the diode is connected to an external input signal and the cathode of the diode is electrically connected to the anode of the input photocoupler, and the cathode of the input photocoupler is grounded through an input resistor; the register unit includes a plurality of registers, the collector of the input photocoupler is electrically connected to the input end of the corresponding matching register and the output end of the register is connected to the input end of the controller; The drive output circuit includes a plurality of signal output units, each of which includes a drive resistor, a transistor and an output photocoupler, one end of the drive resistor is connected to the output end of the controller and the other end of the drive resistor is electrically connected to the base of the transistor, the emitter of the transistor is grounded and the collector of the transistor is electrically connected to the cathode of the output photocoupler, and the emitter of the output photocoupler is connected to an external device.

2. A yarn doffing controller circuit according to claim 1, characterized in that: The collector of the input photocoupler is also connected to the first power supply terminal through a resistor and the emitter of the input photocoupler is grounded.

3. A yarn doffing controller circuit according to claim 2, characterized in that: The collector of the output photoelectric coupler is connected to the second power supply terminal through a resistor.

4. A yarn doffing controller circuit according to claim 3, characterized in that: The anode of the output photocoupler is connected to the power supply terminal VCC through a resistor.

5. A yarn doffing controller circuit according to claim 4, characterized in that: The number of signal input units and signal output units is 24 each.

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