Ceramic Disc Selector Drive Circuit

Abstract

This utility model discloses a driving circuit for a ceramic chip selector, comprising: a transformer module having a transformer input terminal and a switch signal output terminal, the transformer input terminal being connected to a power supply, and a first inductor connected between the power supply and the switch signal output terminal; a negative voltage output module having a negative voltage output terminal, the negative voltage output module including a first input capacitor, a first input diode, and a second inductor, one end of the first input capacitor being connected to the switch signal output terminal, the other end of the first input capacitor being connected to the anode of the first input diode, the cathode of the first input diode being grounded, one end of the second inductor being connected to the anode of the first input diode, and the other end of the second inductor being connected to the negative voltage output terminal; and a positive voltage output module having a positive voltage output terminal connected to the switch signal output terminal. The driving circuit for the ceramic chip selector proposed in this utility model can effectively save PCB area and cost.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a driving circuit for a ceramic disc needle selector. Background Technology

[0002] In the field of textile machinery, the application of ceramic disc needle selectors plays a key role in knitting efficiency and quality. Traditional power conversion solutions mostly use transformers, which can meet basic voltage conversion requirements, but have problems such as large size, high cost, and low conversion efficiency, making it difficult to meet the requirements of modern textile equipment for efficient, reliable and compact power supply systems. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein, and this overview is not intended to limit the scope of the claims.

[0004] This invention proposes a driving circuit for a ceramic chip selector. By having the positive voltage output module and the negative voltage output module both receive the output of the same transformer module, it can effectively save PCB area and cost.

[0005] This utility model provides a driving circuit for a ceramic disc selector, comprising: a transformer module having a transformer input terminal and a switch signal output terminal, the transformer input terminal being connected to a power supply, and a first inductor connected between the power supply and the switch signal output terminal; a negative voltage output module having a negative voltage output terminal, the negative voltage output module including a first input capacitor, a first input diode, and a second inductor, one end of the first input capacitor being connected to the switch signal output terminal, the other end of the first input capacitor being connected to the anode of the first input diode, the cathode of the first input diode being grounded, one end of the second inductor being connected to the anode of the first input diode, and the other end of the second inductor being connected to the negative voltage output terminal, the negative voltage output terminal being connected to an electrical device; and a positive voltage output module having a positive voltage output terminal, the positive voltage output module being connected to the switch signal output terminal, the positive voltage output terminal being connected to the electrical device.

[0006] In some embodiments, the negative voltage output module further includes a first polarized capacitor, the positive terminal of which is connected to the cathode of the first input diode, and the cathode terminal of which is connected to the negative voltage output terminal.

[0007] In some embodiments, the positive voltage output module includes a second input capacitor, a second input diode, and a third inductor. One end of the second input capacitor is connected to the switch signal output terminal, the other end of the second input capacitor is connected to the anode of the second input diode, the cathode of the second input diode is connected to the positive voltage output terminal, one end of the third inductor is connected to the anode of the second input diode, and the other end of the third inductor is grounded.

[0008] In some embodiments, the positive voltage output module includes a second polarized capacitor, the positive terminal of which is connected to the cathode of the second input diode, and the negative terminal of which is grounded.

[0009] In some embodiments, a drive module is also included, wherein the positive voltage output terminal and the negative voltage output terminal are respectively connected to the electrical equipment through the drive module.

[0010] In some embodiments, an output detection module is further included. The output detection module includes a first optocoupler and a second optocoupler. The first light emitter of the first optocoupler is connected to the positive voltage output terminal, and the second light emitter of the second optocoupler is connected to the negative voltage output terminal. The anode of the first light receiver of the first optocoupler is connected to the power supply, and the cathode of the first light receiver is connected to the anode of the second light receiver of the second optocoupler. The cathode of the second light receiver is grounded. The output detection module is used to detect the energization status of the circuits containing the first light receiver and the second light receiver.

[0011] In some embodiments, the output detection module includes a first light-emitting diode and a second light-emitting diode, the anode of the first light-emitting diode is connected to the positive voltage output terminal, the cathode of the second light-emitting diode is connected to the negative voltage output terminal, and the cathode of the first light-emitting diode and the anode of the second light-emitting diode are grounded.

[0012] To achieve the above objectives, the second aspect of this utility model provides a ceramic disc needle selector, including the driving circuit of the ceramic disc needle selector described in the first aspect.

[0013] In some embodiments, the ceramic disc selector further includes a control module and a CAN communicator. The driving circuit of the ceramic disc selector includes a driving module, and the control module, the driving module, and the electrical device are respectively connected to the CAN communicator.

[0014] The embodiments of this application include at least the following beneficial effects: In the transformer module, the switching signal output terminal can control the on / off state of the circuit where the first inductor is located. The first inductor frequently stores and releases energy with the switching signal output terminal, and can provide preset voltages to the positive voltage output module and the negative voltage output module respectively. By periodically controlling the level state, the switching signal output terminal can control the first inductor to store and release energy at a specific frequency, thereby controlling the voltage received by the positive voltage output module and the negative voltage output module. In the negative voltage output module, the first input capacitor receives the electrical energy released by the first inductor, and the second inductor receives the input... The electrical energy is stored and released, and the direction of the current is limited by the first input diode, so that the negative voltage output module can stably output a voltage signal that is negative relative to the ground terminal. In this utility model, the positive voltage output module is used to output a positive voltage signal, which can activate a specific ceramic plate and make the metal needle complete a preset action. The negative voltage output module is used to output a negative voltage signal, which can promptly deactivate the ceramic plate and make the metal needle leave the working position. In this utility model, by having the positive voltage output module and the negative voltage output module receive the output of the same transformer module, PCB area and cost can be effectively saved.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0017] Figure 1 A schematic diagram of an optional driving circuit for a ceramic disc selector provided in an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of an optional circuit for the output detection module provided in an embodiment of this utility model;

[0019] Figure 3 This is an optional system block diagram of a ceramic disc needle selector provided in an embodiment of the present invention. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Currently, in the field of textile machinery, the application of ceramic disc needle selectors plays a key role in knitting efficiency and quality. Traditional power conversion solutions mostly use transformers, which can meet basic voltage conversion requirements, but have problems such as large size, high cost, and low conversion efficiency, making it difficult to meet the requirements of modern textile equipment for efficient, reliable, and compact power supply systems.

[0025] To address the issues of large size, high cost, and low conversion efficiency, this invention provides a driving circuit for a ceramic plate needle selector. By having both the positive and negative voltage output modules receive the output of the same transformer module, it can effectively save PCB area and cost.

[0026] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] Reference Figure 1 and Figure 3 This utility model embodiment provides a driving circuit 100 for a ceramic disc selector, comprising:

[0028] The transformer module 110 is provided with a transformer input terminal and a switch signal output terminal SW. The transformer input terminal is connected to the power supply VCC, and a first inductor L1 is connected between the power supply VCC and the switch signal output terminal SW.

[0029] The negative voltage output module 120 is configured with a negative voltage output terminal -VIN. The negative voltage output module 120 includes a first input capacitor C1, a first input diode D1, and a second inductor L2. One end of the first input capacitor C1 is connected to the switch signal output terminal SW, and the other end of the first input capacitor C1 is connected to the anode of the first input diode D1. The cathode of the first input diode D1 is grounded. One end of the second inductor L2 is connected to the anode of the first input diode D1, and the other end of the second inductor L2 is connected to the negative voltage output terminal -VIN. The negative voltage output terminal -VIN is connected to the electrical equipment 200.

[0030] The positive voltage output module 130 is provided with a positive voltage output terminal +VIN. The positive voltage output module 130 is connected to the switch signal output terminal SW, and the positive voltage output terminal +VIN is connected to the electrical equipment 200.

[0031] Based on this, in the transformer module 110, the switch signal output terminal SW can control the on / off state of the circuit containing the first inductor L1. The first inductor L1 frequently stores and releases energy with the switch signal output terminal SW, and can provide preset voltages to the positive voltage output module 130 and the negative voltage output module 120 respectively. By periodically controlling the level state, the switch signal output terminal SW can control the first inductor L1 to store and release energy at a specific frequency, thereby controlling the voltage received by the positive voltage output module 130 and the negative voltage output module 120. In the negative voltage output module 120, the first input capacitor C1 receives the electrical energy released by the first inductor L1, and the second inductor L2 receives the electrical energy released by the first inductor L1. The input electrical energy is stored and released, and the direction of the current is limited by the first input diode D1, so that the negative voltage output module 120 can stably output a voltage signal that is negative relative to the ground terminal. In this utility model, the positive voltage output module 130 is used to output a positive voltage signal, which can activate a specific ceramic plate and make the metal needle complete a preset action. The negative voltage output module 120 is used to output a negative voltage signal, which can promptly deactivate the ceramic plate and make the metal needle leave the working position. In this utility model, by having the positive voltage output module 130 and the negative voltage output module 120 receive the output of the same transformer module 110, PCB area and cost can be effectively saved.

[0032] Optionally, the transformer module 110 includes an LM51571 chip. The power input VCC is 24 volts. The voltage is amplified by an oscillation circuit consisting of a first inductor L1, a positive voltage output module 130, and a negative voltage output module 120. The positive voltage output terminal +VIN outputs a positive voltage of 48 volts, and the negative voltage output terminal -VIN outputs a negative voltage of 48 volts. The LM51571 chip is provided with a feedback port FB, which is connected to the positive voltage output module for detecting the transformer status.

[0033] In addition, in some embodiments of this utility model, the negative voltage output module 120 further includes a first polarized capacitor C3, the positive terminal of the first polarized capacitor C3 is connected to the cathode of the first input diode D1, and the negative terminal of the first polarized capacitor C3 is connected to the negative voltage output terminal -VIN.

[0034] Understandably, the two ends of the first polarized capacitor C3 are connected to the negative voltage output terminal -VIN and the ground terminal, respectively. The first polarized capacitor C3 can filter out high-frequency ripple and noise in the output negative voltage. When the second inductor L2 releases energy, the current charges the first polarized capacitor C3 through the first input diode D1, so that the first polarized capacitor C3 can smooth the fluctuations of the output voltage, making the output voltage smoother and more stable.

[0035] Meanwhile, during the process of energy storage and release along with the first inductor L1, the first polarity capacitor C3 can also store the energy released by the second inductor L2, thereby maintaining the stability of the negative voltage output.

[0036] Optionally, the negative voltage output module 120 also includes a plurality of first protection capacitors C4. One end of the first protection capacitor C4 is connected to the negative voltage output terminal -VIN, and the other end of the first protection capacitor C4 is connected to the ground terminal. Similarly, the first protection capacitor C4 can effectively reduce the ripple of the negative voltage output, smooth the negative voltage output, and ensure the purity of the negative voltage output.

[0037] Additionally, refer to again Figure 1 As shown, in some embodiments of this utility model, the positive voltage output module 130 includes a second input capacitor C2, a second input diode D2, and a third inductor L3. One end of the second input capacitor C2 is connected to the switch signal output terminal SW, and the other end of the second input capacitor C2 is connected to the anode of the second input diode D2. The cathode of the second input diode D2 is connected to the positive voltage output terminal +VIN. One end of the third inductor L3 is connected to the anode of the second input diode D2, and the other end of the third inductor L3 is grounded.

[0038] Specifically, the second input capacitor C2 receives the electrical energy released by the first inductor L1, and the other end of the second input capacitor C2 releases electrical energy at the same period. The other end of the second input capacitor C2 is used by the third inductor L3 to store and release the electrical energy received by the second input capacitor C2. The second input diode D2 restricts the current direction between the ground terminal and the positive voltage output terminal +VIN, so that the positive voltage output terminal +VIN outputs a positive voltage.

[0039] In addition, in some embodiments of this utility model, the positive voltage output module 130 includes a second polarity capacitor C5, the positive terminal of the second polarity capacitor C5 is connected to the cathode of the second input diode D2, and the negative terminal of the second polarity capacitor C5 is grounded.

[0040] Similarly, the second polarity capacitor C5 smooths the electrical energy released by the third inductor L3, filtering out high-frequency ripple and noise in the voltage between the positive voltage output terminal +VIN and the ground terminal. The positive voltage output module 130 is also equipped with multiple second protection capacitors C6, which are connected in parallel with the second polarity capacitor C5.

[0041] Additionally, refer to Figure 2 and Figure 3 As shown, the driving circuit 100 of the ceramic disc selector also includes an output detection module 300. The output detection module 300 includes a first optocoupler PC1 and a second optocoupler PC2. The first light emitter of the first optocoupler PC1 is connected to the positive voltage output terminal +VIN, and the second light emitter of the second optocoupler PC2 is connected to the negative voltage output terminal -VIN. The anode of the first light receiver of the first optocoupler PC1 is connected to the power supply VCC, and the cathode of the first light receiver is connected to the anode of the second light receiver of the second optocoupler PC2. The cathode of the second light receiver is grounded. The output detection module 300 is used to detect the power supply status of the circuits containing the first and second light receivers.

[0042] Specifically, the first optocoupler PC1 includes a first optical transmitter and a first optical receiver. The anode of the first optical transmitter is connected to the positive voltage output terminal +VIN, and the cathode of the first optical transmitter is grounded. When the positive voltage output terminal +VIN outputs a positive voltage, the first optical transmitter sends an optical signal to the first optical receiver, and the first optical receiver is turned on. When the positive voltage output terminal +VIN is de-energized, the first optical transmitter stops sending optical information, and the first optical receiver is turned off. The second optocoupler PC2 includes a second optical transmitter and a second optical receiver. The anode of the second optical transmitter is grounded, and the cathode of the second optical transmitter is connected to the negative voltage output terminal -VIN. The negative voltage output terminal -VIN outputs a negative voltage information relative to ground to the second optical transmitter. In the second optical transmitter, the current flows from the anode to the cathode. The second optical transmitter sends an optical signal to the second optical receiver, and the second optical receiver is turned on. When the negative voltage output terminal -VIN is de-energized, the second optical receiver is disconnected.

[0043] The anode of the first optical receiver is connected to the positive terminal of the power supply VCC. The cathode of the first optical receiver is connected to the anode of the second optical receiver. The cathode of the second optical receiver is grounded. The anode of the first optical receiver is connected to the CHK port of the output detection module 300. The first and second optical receivers are simultaneously turned on when the positive voltage output terminal +VIN outputs a positive voltage and the negative voltage output terminal -VIN outputs a negative voltage. The circuit containing the first and second optical receivers is energized, and the electrical signal is detected by the CHK port. Thus, it can be determined that the positive voltage output module 130 and the negative voltage output module 120 can normally output +48V and -48V voltage signals, respectively.

[0044] In addition, in some embodiments of this utility model, the output detection module 300 includes a first light-emitting diode D3 and a second light-emitting diode D4. The anode of the first light-emitting diode D3 is connected to the positive voltage output terminal +VIN, the cathode of the second light-emitting diode D4 is connected to the negative voltage output terminal -VIN, and the cathode of the first light-emitting diode D3 and the anode of the second light-emitting diode D4 are grounded.

[0045] The first light-emitting diode D3 is connected in parallel with the first light emitter in the first optocoupler PC1. When the positive voltage output terminal +VIN outputs a positive voltage, the first light-emitting diode D3 emits light information to the outside world. The second light-emitting diode D4 is connected in parallel with the second light emitter. When the negative voltage output terminal -VIN outputs a negative voltage, the second light-emitting diode D4 emits light information to the outside world.

[0046] In addition, some embodiments of this utility model also include a drive module 400, with the positive voltage output terminal +VIN and the negative voltage output terminal -VIN respectively connected to the electrical equipment 200 through the drive module 400.

[0047] Specifically, the positive voltage output terminal +VIN, the negative voltage output terminal -VIN, and the electrical device 200 are respectively connected to the drive module 400. The drive module 400 controls the on / off state between the positive voltage output terminal +VIN and the electrical device 200, and the on / off state between the negative voltage output terminal -VIN and the electrical device 200.

[0048] Additionally, refer to Figure 3 As shown, an embodiment of this utility model also proposes a ceramic disc needle selector, including the driving circuit 100 of the ceramic disc needle selector in the above embodiment.

[0049] The ceramic disc selector also includes a control module 500 and a CAN communicator 600. The drive module 400, transformer module 110 and output detection module 300 in the drive circuit 100 are electrically connected to the control module 500 through the CAN communicator 600.

[0050] The CAN communicator 600 is used to transmit control commands from the control module 500 to the various drive modules 400 and electrical devices 200 (i.e., to activate or deactivate the ceramic discs). These commands can include instructions for needle selection actions, such as selecting specific metal needles for knitting operations, adjusting needle selection speed and sequence, etc., thereby achieving precise control over the needle selection process. The CAN communicator 600 can also feed back the operating status of the needle selector (such as the currently selected needle position, operating temperature, fault information, etc.) or the positive and negative voltage output status detected by the output detection module 300 to the control module 500, thereby helping the control module 500 to monitor the operation of the needle selector in real time and make timely adjustments or handle faults. In modern knitting equipment, multiple ceramic disc needle selectors or other peripheral devices are usually equipped. The CAN communicator 600 can build a communication network, enabling efficient data exchange between multiple needle selectors and the control module 500. For example, the control module 500 can simultaneously control multiple needle selectors to work together via a CAN network to achieve complex knitting patterns, simplifying the system's wiring and control logic, and improving the system's reliability and maintainability.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A driving circuit for a ceramic disc selector, characterized in that, include: A transformer module is provided with a transformer input terminal and a switch signal output terminal. The transformer input terminal is connected to a power supply, and a first inductor is connected between the power supply and the switch signal output terminal. A negative voltage output module is provided, comprising a first input capacitor, a first input diode, and a second inductor. One end of the first input capacitor is connected to the switch signal output terminal, and the other end of the first input capacitor is connected to the anode of the first input diode. The cathode of the first input diode is grounded. One end of the second inductor is connected to the anode of the first input diode, and the other end of the second inductor is connected to the negative voltage output terminal. The negative voltage output terminal is connected to the electrical equipment. A positive voltage output module is provided with a positive voltage output terminal. The positive voltage output module is connected to the switch signal output terminal, and the positive voltage output terminal is connected to the electrical equipment.

2. The driving circuit of the ceramic disc selector according to claim 1, characterized in that, The negative voltage output module further includes a first polarized capacitor, the positive terminal of which is connected to the cathode of the first input diode, and the negative terminal of which is connected to the negative voltage output terminal.

3. The driving circuit of the ceramic disc selector according to claim 1, characterized in that, The positive voltage output module includes a second input capacitor, a second input diode, and a third inductor. One end of the second input capacitor is connected to the switch signal output terminal, and the other end of the second input capacitor is connected to the anode of the second input diode. The cathode of the second input diode is connected to the positive voltage output terminal. One end of the third inductor is connected to the anode of the second input diode, and the other end of the third inductor is grounded.

4. The driving circuit of the ceramic disc selector according to claim 3, characterized in that, The positive voltage output module includes a second polarized capacitor, the positive terminal of which is connected to the cathode of the second input diode, and the negative terminal of which is grounded.

5. The driving circuit of the ceramic disc selector according to claim 1, characterized in that, It also includes an output detection module, which includes a first optocoupler and a second optocoupler. The first light emitter of the first optocoupler is connected to the positive voltage output terminal, and the second light emitter of the second optocoupler is connected to the negative voltage output terminal. The anode of the first light receiver of the first optocoupler is connected to the power supply, and the cathode of the first light receiver is connected to the anode of the second light receiver of the second optocoupler. The cathode of the second light receiver is grounded. The output detection module is used to detect the power supply status of the circuits containing the first light receiver and the second light receiver.

6. The driving circuit of the ceramic disc selector according to claim 5, characterized in that, The output detection module includes a first light-emitting diode and a second light-emitting diode. The anode of the first light-emitting diode is connected to the positive voltage output terminal, and the cathode of the second light-emitting diode is connected to the negative voltage output terminal. The cathode of the first light-emitting diode and the anode of the second light-emitting diode are grounded.

7. The driving circuit of the ceramic disc selector according to claim 1, characterized in that, It also includes a drive module, through which the positive voltage output terminal and the negative voltage output terminal are respectively connected to the electrical equipment.

8. A ceramic disc selector, characterized in that, The driving circuit for the ceramic disc selector as described in any one of claims 1 to 7 is included.

9. The ceramic disc selector according to claim 8, characterized in that, It also includes a control module and a CAN communicator. The driving circuit of the ceramic disc selector includes a driving module. The control module, the driving module, and the electrical equipment are respectively connected to the CAN communicator.

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