CN213752541U - Low-voltage switch-on/off circuit for color selector and color selector - Google Patents
Low-voltage switch-on/off circuit for color selector and color selector Download PDFInfo
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- CN213752541U CN213752541U CN202023172475.9U CN202023172475U CN213752541U CN 213752541 U CN213752541 U CN 213752541U CN 202023172475 U CN202023172475 U CN 202023172475U CN 213752541 U CN213752541 U CN 213752541U
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Abstract
The utility model discloses a low pressure switch circuit, look selection machine for look selection machine, wherein, low pressure switch circuit includes power conversion unit, ac contactor and switching on and shutting down the control unit, wherein, the input of power conversion unit is connected to the zero line and the live wire of alternating current, and power conversion unit is used for converting the alternating current of input into the direct current and exports; the alternating current contactor controls whether the color selector is electrified or not; the switch control unit is connected with the power supply conversion unit, the on-off control unit comprises a control circuit board, the control circuit board is connected with the upper computer, the on-off control unit controls the AC contactor to be closed so as to enable the color sorter to be electrified and operated, and when the color sorter operates, if the control circuit board receives a shutdown command, the on-off control unit controls the AC contactor to be disconnected so as to enable the color sorter to be shut down. From this, this a low pressure switch circuit for look selection machine can realize that low pressure safety opens and stops look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
Description
Technical Field
The utility model relates to a control circuit technical field especially relates to a low pressure switch circuit and a look selection machine for look selection machine.
Background
At present, the complete machine power on and off in the color sorter industry generally adopts a mode of a button and an Alternating Current contactor, wherein a normally open button and a normally closed button are used, and the Alternating Current contactor supplies power for Alternating Current (AC) 220V. When the whole machine is powered on, a normally open button is pressed down, a contactor coil is switched on at 220V, a contactor is closed, and the whole machine is powered on; when the whole machine is powered off, the normally closed button is pressed, the contactor coil is powered off by 220V, the contactor is disconnected, and the whole machine is powered off.
In this power-on scheme, since the ac contactor coil used is 220V, the on-off button is generally installed near the front panel of the color selector, which is basically a weak current circuit, and the operator may frequently operate this area. The strong current connected to the button has certain potential safety hazard, and is easy to cause electric shock accidents, because no matter the whole machine is powered off or powered on, 220V strong current always exists in the button area. Meanwhile, the problems of electrical interference and the like are easily caused by the arrangement of the strong-current cable in the weak-current electrical box.
In addition, the power on/off scheme can not realize automatic software power off, and the operator presses the normally closed button to power off the whole computer when the power off is performed. In general, when the color sorter is shut down, the normally closed button cannot be pressed directly to cut off the power supply directly, which may cause data loss of the upper computer. In the related technology, the upper computer is operated firstly, the upper computer is shut down firstly by software, and an operating system of the upper computer is closed after the upper computer executes corresponding operations (parameters and the like). However, at this time, all parts of the whole machine are still electrified, the power supply of the whole machine is not really disconnected, and the normally closed button needs to be pressed down again to disconnect the coil power supply of the alternating current contactor, so that the contactor is disconnected, and the power of the whole machine is cut off. The power-off operation is somewhat complicated, and the real software control power-off is not realized.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a low pressure switch circuit for look selection machine can realize that low pressure safety opens and stops look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
A second object of the present invention is to provide a color sorter.
In order to achieve the above object, the present invention provides a low voltage switch circuit for a color sorter, the circuit including a power conversion unit, an input end of the power conversion unit being connected to a zero line and a live line of an alternating current, the power conversion unit being configured to convert the input alternating current into a direct current for output; the alternating current contactor is connected in a power supply loop of the alternating current to control whether the color selector is electrified or not; the power-on and power-off control unit is connected with the output end of the power conversion unit to work according to the direct current, the power-on and power-off control unit comprises a control circuit board, the control circuit board is connected with an upper computer to receive a power-off command issued by the upper computer, the power-on and power-off control unit controls the AC contactor to be closed so that the color sorter is electrified to work, and when the color sorter works, if the power-off command is received by the control circuit board, the power-on and power-off control unit controls the AC contactor to be disconnected so that the color sorter is powered off.
The utility model discloses a low-voltage switch circuit includes power conversion unit, ac contactor and switching on and shutting down the control unit, wherein, the input of power conversion unit is connected to the zero line and the live wire of alternating current, and power conversion unit is used for converting the alternating current of input into the direct current and exports; the alternating current contactor is connected in a power supply loop of alternating current to control whether the color selector is electrified or not; the switch control unit is connected with the output end of the power supply conversion unit to work according to direct current, the switch control unit comprises a control circuit board, the control circuit board is connected with the upper computer to receive a shutdown command sent by the upper computer, the switch control unit controls the alternating current contactor to be closed to enable the color sorter to be electrified to work, and when the color sorter works, if the control circuit board receives the shutdown command, the switch control unit controls the alternating current contactor to be disconnected to enable the color sorter to be shut down. From this, this a low pressure switch circuit for look selection machine can realize that low pressure safety opens and stops look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
Additionally, the utility model discloses a low pressure switch machine circuit for look selection machine can also have following additional technical characterstic:
in some examples, the power on/off control unit further includes: one end of the first relay is connected to the first output end of the power supply conversion unit, and the control end of the first relay is connected with the control circuit board; one end of the second switch module is connected with the other end of the first relay, and the second switch module is closed when receiving a starting command; and one end of a coil in the third relay is connected with the other end of the second switch module, the other end of the coil in the third relay is connected with the third end of the second switch module and then is connected with the second output end of the power conversion unit, the switch in the third relay is connected to the power supply loop of the alternating current, and the coil in the third relay is electrified when the first relay and the second switch module are closed so as to attract the switch in the third relay, so that the coil of the alternating current contactor is electrified to be closed.
In some examples, the second switch module includes a start trigger switch and a second relay, one end of the start trigger switch is connected to one end of a switch in the second relay and then connected to the first output end of the power conversion unit through a first relay switch, one end of a coil in the second relay is connected to the second output end of the power conversion unit, and the other end of the start trigger switch, the other end of the switch in the second relay, and the other end of the coil in the second relay are connected and then connected to the second output end of the power conversion unit through a coil in the third relay.
In some examples, the power-on trigger switch is a normally open switch and is arranged corresponding to a power-on button of the color sorter, wherein when the power-on button is triggered, the power-on trigger switch is closed to energize a coil in the second relay, and after the coil in the second relay is energized, the switch in the second relay is closed to keep the coils in the second relay and the third relay energized.
In some examples, the switch contacts in the first relay are normally closed contacts.
In some examples, the power on/off control unit further includes a power off trigger switch, the power off trigger switch is connected between one end of the first relay and the first output end of the power supply conversion unit, the power off trigger switch is arranged corresponding to a power off button of the color sorter, and the power off trigger switch is turned off when triggered to turn off the ac contactor so as to shut off the color sorter.
In some examples, the shutdown trigger switch is a normally closed switch.
In some examples, the voltage of the direct current is 12V or 24V.
In some examples, the power conversion unit is an AC/DC isolated power conversion circuit.
To achieve the above object, a second object of the present invention is to provide a color sorter including a low-voltage on/off circuit for the color sorter as in the above example.
According to the utility model discloses a look selection machine, through the low pressure switch circuit who is used for the look selection machine in the above-mentioned example, can realize that low pressure safety opens and stops the look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
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
Fig. 1 is a schematic diagram of a low-voltage power on/off circuit for a color sorter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a low-voltage power on/off circuit for a color sorter according to another embodiment of the present invention;
fig. 3 is a block diagram of the color sorter according to the embodiment of the present invention.
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 and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The following describes a low-voltage switch circuit and a color sorter for a color sorter according to embodiments of the present invention with reference to the drawings.
Fig. 1 is a schematic diagram of a low-voltage switch circuit for a color sorter according to an embodiment of the present invention.
As shown in fig. 1, the low-voltage on/off circuit for the color sorter includes a power conversion unit 11, an ac contactor 12, and a switch control unit 13.
The input end of the power conversion unit 11 is connected to a zero line N and a live line L of alternating current, and the power conversion unit 11 is used for converting the input alternating current into direct current for output; the alternating current contactor 12 is connected in a power supply loop of alternating current to control whether the color selector is electrified or not; the on-off control unit 13 is connected to the output end of the power conversion unit 11 to operate according to direct current, the on-off control unit 13 includes a control circuit board 131, the control circuit board 131 is connected to the upper computer 20 to receive a power-off command issued by the upper computer 20, the on-off control unit 13 controls the ac contactor 12 to be closed to enable the color sorter to be powered on to operate, and when the color sorter operates, if the power-off command is received through the control circuit board, the on-off control unit 13 controls the ac contactor 12 to be disconnected to enable the color sorter to be powered off.
Specifically, the power conversion unit 11 in this embodiment may convert the commercial power of 220V ac into a low-voltage dc power, such as 12V dc, 24V dc, etc., where the dc voltage is required to meet the safety voltage specification. In some embodiments of the present invention, the power conversion unit 11 may be an AC (Alternating Current)/DC (Direct Current) isolation power conversion circuit. The on-off control unit 13 is connected to the output terminal of the power conversion unit 11 and operates using direct current. As shown in fig. 1, the switch control unit 13 includes a control circuit board 131, the control circuit board 131 is connected to the upper computer 20, and the switch control unit 13 may first control the ac contactor 12 to close to energize the color sorter for operation. Then, when the color sorter is in the working state, the upper computer 20 may issue a shutdown command, and after receiving the shutdown command, the control circuit board 131 controls the ac contactor 12 through the on-off control unit 13 to shutdown the color sorter. Therefore, the color sorter can be controlled to be turned on and off through software, the color sorter is very convenient and fast, the working voltage in the on-off control unit 12 meets the safe voltage specification, and the operation safety of an operator is greatly improved.
In some examples of the present invention, as shown in fig. 1, the on/off control unit 13 further includes a first relay K1, a second switch module M2, and a third relay K3.
One end of the first relay K1 is connected to the first output end of the power conversion unit 11, and the control end of the first relay K1 is connected to the control circuit board 131; one end of the second switch module M2 is connected with the other end of the first relay K1, and the second switch module M2 is closed when receiving a starting command; one end of a coil in the third relay K3 is connected with the other end of the second switch module M2, the other end of the coil in the third relay K3 is connected with the third end of the second switch module and then connected with the second output end of the power supply conversion unit 11, the switch in the third relay K3 is connected to a power supply loop of alternating current, and the coil in the third relay K3 is electrified when the first relay K1 and the second switch module M2 are closed so as to attract the switch in the third relay K3, so that the coil of the alternating current contactor is electrified to be closed.
Specifically, as shown in fig. 1, the switch control unit 13 includes a first relay K1, a second switch module M2, and a third relay K3. More specifically, in this embodiment, the positive terminal of the converted direct current is set as the first output terminal of the power conversion unit 11, and the negative terminal of the converted direct current is set as the second output terminal of the power conversion unit 11. One end of the first relay K1 in the on/off control unit 13 is connected to the first output end of the power conversion unit 11, and the control end of the first relay K1 is also connected to the control circuit board 131, and the first relay K1 can be controlled to be turned on or off by the control circuit board 131. The other end of the first relay K1 is connected to one end of the second switch module M2, and the second switch module M2 can be closed after receiving the power-on command. After the second switch module M2 is closed, the coil in the third relay K3 may pull in the switch in the third relay K3, so that the coil of the ac contactor 12 is energized to close, thereby completing the power-on control of the color sorter.
In some examples of the present invention, the switch contact in the first relay K1 is a normally closed contact.
Specifically, since the first relay K1 is in a closed state under normal conditions, the switch in the third relay K3 can be pulled in by only controlling the second switch module M2 to be closed, so as to start the color sorter.
In some examples of the present invention, as shown in fig. 1, the second switch module M2 includes a start trigger switch S2 and a second relay K2, one end of the start trigger switch S2 is connected to one end of a switch in the second relay K2 and then connected to the first output end of the power conversion unit 11 through a first relay K1, that is, the other end of the first relay K1 is connected to one end of the second switch module M2, one end of a coil in the second relay K2 is connected to the second output end of the power conversion unit 11, the other end of the start trigger switch S2, the other end of the switch in the second relay K2, and the other end of the coil in the second relay K2 is connected to one end of a coil in the third relay K3, that is, the one end of the coil in the third relay K3 is connected to the other end of the second switch module M2.
Specifically, referring to fig. 1, the second switch module M2 includes a power-on trigger switch S2 and a second relay K2, and since the first relay K1 is normally in a closed state, when the power-on trigger switch S2 is closed, the second relay K2 can be attracted, that is, the switch in the second relay K2 is in a closed state. The third relay K3 is also the same as the second relay K2, and when the power on trigger switch S2 is closed, the switch in the third relay K3 is also in a closed state, so that the power on of the color selector can be controlled.
In this embodiment, as shown in fig. 1, the power-on trigger switch S2 is a normally open switch and is set corresponding to the power-on button of the color sorter, wherein the power-on trigger switch S2 is closed when the power-on button is triggered, so as to energize the coil in the second relay K2, and the coil in the second relay K2 is energized, and then the switch in the second relay K2 is closed, so as to keep the coils in the second relay K2 and the third relay K3 energized.
Specifically, the power-on trigger switch S2 is a normally open switch, and when the power-on trigger switch S2 is pressed by the operator, i.e., the power-on trigger switch S2 is in a closed state, and when the power-on trigger switch S2 is released by the operator, the power-on trigger switch S2 returns to an open state. More specifically, referring to fig. 1, after the power-on trigger switch S2 is closed, the coil in the second relay K2 is energized to close the second relay K2, and the coil in the third relay K3 is also energized to close the third relay K3. At this time, the operator has released the power-on trigger switch S2, but since the switch in the second relay K2 is already in the closed state, the coil in the third relay K3 is also in the energized state, that is, the switch in the third relay K3 is also in the closed state, so that the color selector can be controlled to be energized. Moreover, the power-on trigger switch S2 is also set corresponding to the power-on button of the color selector, so that the color selector can be powered on by operating the power-on button.
In some examples of the present invention, as shown in fig. 2, the power on/off control unit 13 further includes a power off trigger switch S1, the power off trigger switch S1 is connected between one end of the first relay K1 and the first output end of the power conversion unit 11, the power off trigger switch S1 corresponds to the power off button of the color sorter, and the power off trigger switch S1 is turned off when triggered to forcibly turn off the ac contactor 12, so that the color sorter is turned off.
Specifically, a shutdown trigger switch S1 is further provided between the first output terminal of the power conversion unit 11 and the first relay K1, and in this embodiment, the shutdown trigger switch S1 is a normally closed switch. When the color selector needs to be powered off from the positive electrode, the shutdown trigger switch S1 is turned off, so that the coils of the second relay K2 and the third relay K3 are powered off, the switches in the second relay K2 and the third relay K3 are turned off, and the power supply to the alternating current contactor 12 is stopped, so that the power-off operation of the color selector is achieved. Further, the shutdown trigger switch S1 is disposed corresponding to a shutdown button of the color sorter, and the operator can control the color sorter to power off by operating the shutdown button of the color sorter. It should be noted that the power cut of this method is also under non-software control, but the method can realize non-software control under a safe voltage range. In addition, the application can also send a shutdown command to the control circuit board 131 through the upper computer 20, so that the first relay K1 is controlled to be switched off to control the alternating current contactor 12 to be switched off to shut down the color sorter.
In some examples of the present invention, as shown in fig. 1 or fig. 2, when the control circuit board 131 receives the shutdown command issued by the upper computer 20, the delay preset time controls the first relay K1 to be turned off, so as to control the ac contactor 12 to be turned off, so as to shut down the color sorter.
Particularly, if the color sorter in the working state is suddenly powered off, the data of the upper computer is easily lost. In this embodiment, after the control circuit board 131 receives the shutdown command issued by the upper computer 20, the preset time may be prolonged, and then the first relay K1 is controlled to be turned off, and in the preset time, the upper computer 20 may complete the storage of data such as the operation parameters of the color sorter. After the upper computer 20 completes data storage and other operations, the ac contactor 12 may be controlled to be turned off, so as to shut down the color sorter. Therefore, the data loss of the upper computer caused by sudden power failure of the color selector is prevented.
To sum up, the utility model discloses a low pressure switch circuit for look selection machine can realize that low pressure safety opens and stops look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
Fig. 3 is a block diagram of the color sorter according to the embodiment of the present invention.
Further, as shown in fig. 3, the present invention provides a color sorter 100, where the color sorter 100 includes the low-voltage switch circuit 10 for the color sorter in the above-mentioned embodiment.
According to the utility model discloses a look selection machine, through the low pressure switch circuit that is used for the look selection machine in the above-mentioned embodiment, can realize that low pressure safety opens and stops the look selection machine, and the while operation is safe and convenient, has greatly improved user experience.
In addition, other configurations and functions of the color sorter according to the embodiments of the present invention are known to those skilled in the art, and are not described herein for reducing redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A low voltage switch on/off circuit for a color selector, comprising:
the input end of the power conversion unit is connected to a zero line and a live line of alternating current, and the power conversion unit is used for converting the input alternating current into direct current for output;
the alternating current contactor is connected in a power supply loop of the alternating current to control whether the color selector is electrified or not;
the power-on and power-off control unit is connected with the output end of the power conversion unit to work according to the direct current, the power-on and power-off control unit comprises a control circuit board, the control circuit board is connected with an upper computer to receive a power-off command issued by the upper computer, the power-on and power-off control unit controls the AC contactor to be closed so that the color sorter is electrified to work, and when the color sorter works, if the power-off command is received by the control circuit board, the power-on and power-off control unit controls the AC contactor to be disconnected so that the color sorter is powered off.
2. The low voltage switch on/off circuit for a color selector of claim 1, wherein the switch on/off control unit further comprises:
one end of the first relay is connected to the first output end of the power supply conversion unit, and the control end of the first relay is connected with the control circuit board;
one end of the second switch module is connected with the other end of the first relay, and the second switch module is closed when receiving a starting command;
and one end of a coil in the third relay is connected with the other end of the second switch module, the other end of the coil in the third relay is connected with the third end of the second switch module and then is connected with the second output end of the power conversion unit, the switch in the third relay is connected to the power supply loop of the alternating current, and the coil in the third relay is electrified when the first relay and the second switch module are closed so as to attract the switch in the third relay, so that the coil of the alternating current contactor is electrified to be closed.
3. The low voltage switch circuit for color selector of claim 2, wherein the second switch module comprises a power-on trigger switch and a second relay, wherein one end of the power-on trigger switch is connected to one end of a switch in the second relay and then connected to the first output terminal of the power conversion unit through the first relay switch, one end of a coil in the second relay is connected to the second output terminal of the power conversion unit, and the other end of the power-on trigger switch, the other end of the switch in the second relay, and the other end of the coil in the second relay are connected and then connected to the second output terminal of the power conversion unit through a coil in the third relay.
4. The low-voltage switch circuit for the color selector as claimed in claim 3, wherein the power-on trigger switch is a normally open switch and is disposed corresponding to a power-on button of the color selector, wherein when the power-on button is triggered, the power-on trigger switch is closed to energize the coil of the second relay, and when the coil of the second relay is energized, the switch of the second relay is closed to keep the coils of the second relay and the third relay energized.
5. The low voltage switch circuit for a color selector of claim 2 wherein the switch contacts in the first relay are normally closed contacts.
6. The low-voltage switch circuit for the color selector as claimed in claim 2, wherein the switch control unit further comprises a shutdown trigger switch, the shutdown trigger switch is connected between one end of the first relay and the first output end of the power conversion unit, the shutdown trigger switch is arranged corresponding to a shutdown button of the color selector, and the shutdown trigger switch is turned off when triggered to disconnect the ac contactor so as to shut down the color selector.
7. The low-voltage switch circuit for a color selector of claim 6, wherein the shutdown trigger switch is a normally closed switch.
8. The low voltage switch circuit for a color selector of any one of claims 1-7, wherein the voltage of the direct current is 12V or 24V.
9. The low-voltage switch-on/switch-off circuit for a color selector of claim 1, wherein the power conversion unit is an AC/DC isolated power conversion circuit.
10. A color selector comprising a low voltage on-off circuit for a color selector as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023172475.9U CN213752541U (en) | 2020-12-24 | 2020-12-24 | Low-voltage switch-on/off circuit for color selector and color selector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023172475.9U CN213752541U (en) | 2020-12-24 | 2020-12-24 | Low-voltage switch-on/off circuit for color selector and color selector |
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| Publication Number | Publication Date |
|---|---|
| CN213752541U true CN213752541U (en) | 2021-07-20 |
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| CN202023172475.9U Active CN213752541U (en) | 2020-12-24 | 2020-12-24 | Low-voltage switch-on/off circuit for color selector and color selector |
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| Country | Link |
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| CN (1) | CN213752541U (en) |
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