CN211293683U - Power switch control device and electric equipment comprising same - Google Patents
Power switch control device and electric equipment comprising same Download PDFInfo
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- CN211293683U CN211293683U CN201922195556.1U CN201922195556U CN211293683U CN 211293683 U CN211293683 U CN 211293683U CN 201922195556 U CN201922195556 U CN 201922195556U CN 211293683 U CN211293683 U CN 211293683U
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Abstract
Power switch controlling means, including main circuit and control circuit, the main circuit includes: a power supply comprising a primary interface, a secondary interface, and a power output port; the first switch of the primary interface is connected with the second switch of the secondary interface; the control circuit includes: the control module comprises a signal input port and a control signal output port, wherein the signal input port detects the level of the main circuit, and the control signal output port comprises a selection port for outputting a selection signal and a switch port for outputting a control signal for controlling the power switch; a selection circuit connected on the main circuit between the power supply and one of the first switch and the second switch and configured to selectively connect the power supply to the one of the first switch and the second switch or to connect the power supply to the switch port of the control module in response to a selection signal of the control module. Also relates to electric equipment comprising the power switch control device. The power switch control device can make the switch of the power supply in the main circuit more flexible.
Description
Technical Field
The utility model relates to a circuit control field specifically relates to a consumer that is used for the on-off control device of power and includes this switch control device.
Background
It is a common application scenario to use various types of power supplies to provide electric energy for various electrical appliances so that the corresponding electrical appliances can obtain energy to realize corresponding functions. Because the power supply is the energy guarantee of the whole system, the on-off control of the power supply is very critical.
In various industrial applications, users can put different demands on the on-off control of the power supply according to actual application requirements. Thus, common power switch control by only one or more switches in series with the power supply has been unable to meet the increasing demands of users.
For example, in the above-described power switch control system in which switching control is performed only by a switch, the turning on and off of the power supply will depend entirely on the actual state of the switch. It is common that the actual state of the switch does not exactly correspond to the switching state of the power supply. For example, in the case of a reset switch, which is common in the art, it is not possible to ensure a continuous turning on or off of the power supply by a momentary state change of the reset switch.
For another example, a consumer using the power supply may need to be turned off after the switch is operated and certain additional conditions are met, such as waiting for a period of time, to ensure proper operation of the consumer. However, by simple switching it is not ensured that the power supply is not switched off until such time as the consumer no longer really needs the power supply.
As another example, in actual use, users often need to define different operations (e.g., short and long presses) of the same switch to implement different functions, thereby enabling as many system functions as possible without significantly increasing the amount of hardware. This requires that the power switch control means be able to recognise these different operations of the switch. However, this function is difficult to achieve with only the switch and the power supply itself.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a do in order to solve the technical problem among the above-mentioned prior art, the purpose provides a switch control device for power, and this switch control device can be adapted to specific user's demand better and come the switch of control power in a flexible way.
Therefore, the utility model provides a power switch control device, power switch control device includes main circuit and control circuit, wherein, the main circuit includes: the power supply comprises a primary interface, a secondary interface and a power output port; a first switch and a second switch, the first switch connected to the primary interface, the second switch connected to the secondary interface; the control circuit includes: the control module comprises a signal input port and at least two control signal output ports, the signal input port detects the level state of the main circuit and sends a signal reflecting the level state into the control module, and the control signal output ports comprise a selection port for outputting a selection signal and a switch port for outputting a control signal for controlling the power switch; and a selection circuit connected between the power supply and one of the first switch and the second switch on the main circuit and configured to selectively connect the power supply to the one of the first switch and the second switch or to connect the power supply to the switch port of the control module in response to a selection signal of the control module.
By providing a control circuit comprising a plurality of additional circuit components, the switching of the power supply in the main circuit can be made more flexible.
According to the utility model discloses a preferred embodiment of power switch controlling means, control module is configured into: the control module detects a level state of an end portion of the one of the first switch and the second switch coupled to the power supply, and when a predetermined power-off signal issued by the one of the first switch and the second switch is detected, issues a selection signal to cause the selection circuit to connect the power supply to the switch port of the control module according to the selection signal, and also issues a control signal through the switch port to turn off the power supply.
The level status of the location detected by the control module may be used as a power down signal to turn off the power supply rather than being used to physically turn off the power supply directly.
According to a preferred embodiment of the power switch control device of the present invention, the one of the first switch and the second switch is a reset switch, and the predetermined power-off signal is an edge signal sent from the one of the first switch and the second switch.
The edge signal can be recognized by the control module as a power-down signal to turn off the power supply, thereby increasing the applicable switch types.
According to a preferred embodiment of the power switch control device of the present invention, a delay circuit is provided between the selection circuit and the one of the first switch and the second switch; the control module is configured to: and when a signal that one of the first switch and the second switch is disconnected is detected, a selection signal is sent to connect the power supply to the switch port of the control module, and the power supply is turned off by sending a control signal through the switch port after waiting until the electrical appliance finishes necessary operation.
Through the setting of the delay circuit, the control module can be ensured to be superior to the switch which sends the power-off signal to take over the switch control of the power supply, and the power supply is closed at a proper moment.
According to the utility model discloses a preferred embodiment of power switch controlling means, the electric energy of control module operation by the power supply, just control module configures into: the power supply is started when the power supply is powered on, and a selection signal is sent out to connect the power supply to the switch port of the control module when the power supply is started, and the control signal is sent out through the switch port to keep the power supply on.
The control module configured in this way can ensure the power supply to be turned on when being powered on, regardless of the state of the corresponding switch.
According to a preferred embodiment of the power switch control device of the present invention, a logic buffer is provided between the signal input port and the one of the first switch and the second switch; and/or a logic buffer is arranged between the selection port and the selection circuit; and/or a logic buffer is arranged between the selection circuit and the power supply.
According to a preferred embodiment of the power switch control device of the present invention, the logic buffer is a shaping circuit, and the logic buffer is configured to: adapting the electrical signal logic of the input and output of the logic buffer; and/or isolating the electric signals at the input end and the output end of the logic buffer according to requirements; and/or adjusting a time delay of the electrical signal passing through the logic buffer.
The logic buffer is better able to output a signal input from its input to its output and to perform the necessary processing on that signal to ensure device functionality.
According to a preferred embodiment of the power switch control device of the present invention, the selection circuit is connected between the power supply and the second switch on the main circuit.
The switching control of the power supply can be realized more simply by controlling the secondary interface of the power supply.
The utility model also provides an electric equipment including as aforementioned switch controlling means, the electric equipment by mains operated.
According to a preferred embodiment of the electrical device of the present invention, the electrical device is a sample preparation device.
The power switch control apparatus described above is particularly suited for use as a power supply for a sample preparation device to perform its various desired functions.
To sum up, the utility model discloses a switch controlling means's beneficial effect lies in at least:
(1) the control is flexible;
(2) the functions are various;
(3) the method is suitable for adjusting and modifying the operation mode according to actual requirements.
It is to be understood that both the foregoing general description and the following detailed description illustrate various embodiments and are intended to provide an overview or framework for understanding the nature and character of the claimed subject matter.
Drawings
This document includes the accompanying drawings to provide a further understanding of various embodiments. The accompanying drawings are incorporated in and constitute a part of this specification. The drawings illustrate various embodiments described herein, and together with the description serve to explain the principles and operations of the claimed subject matter.
With reference to the above purposes, the technical features of the invention are hereinafter clearly described, and the advantages thereof are apparent from the following detailed description with reference to the accompanying drawings, which illustrate, by way of example, a preferred embodiment of the invention, without limiting its scope.
Fig. 1 is a schematic circuit diagram of a preferred embodiment of a power switch control device according to the present invention.
List of reference numerals:
110 primary interface
120 secondary interface
PWR power supply
SW1 first switch
SW2 second switch
TD time delay circuit
300 control module
310 signal input port
320 select port
330 switch port
400 selection circuit
500 logical buffers.
Detailed Description
Embodiments of the present invention will now be described in detail. For convenience in explanation and accurate definition of the technical solutions of the present invention, terms relating to orientation and connection relation are used to describe features of the exemplary embodiments with reference to positions of the features shown in the drawings.
Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a power switch control device according to a preferred embodiment of the present invention is shown.
Herein, the power switch control device shown in fig. 1 described above is divided into two parts, a main circuit and a control circuit.
The main circuit comprises a power supply PWR comprising a primary interface 110, a secondary interface 120 and a power output port. The power supply PWR may be any commercially available power supply type such as a dc power supply, an ac power supply, and the like. The power supply can be a direct current power supply of HPRG-600-24 type.
The main circuit further includes a first switch SW1 and a second switch SW2, the first switch SW1 being connected to the primary interface 110, the second switch SW2 being connected to the secondary interface 120. The first switch SW1 and the second switch SW2 may be any commercially available switches, such as a knife switch or a button switch, among others. Alternatively, the first switch SW1 and the second switch SW2 may be switches that can be remotely operated in other ways. It is noted that the first switch SW1 and the second switch SW2 may be disposed at different positions of the customer, and the degrees of convenience of operation for the user may be different from each other. The primary interface 110 may be connected, for example, to a positive grid pole, such as a positive 110V or 220V ac power source pole, via a first switch SW 1. The secondary interface 120 may be grounded via a second switch SW 2.
In the power switch control apparatus including only the main circuit, the first switch SW1 and the second switch SW2 are required to be closed to turn on the power PWR, and the first switch SW1 and the second switch SW2 are required to be opened to turn off the power PWR.
The power supply may be the mains power supply of the electrical consumer. The electrical consumer may be a sample preparation device.
The control circuit includes a control module 300. The control module 300 includes a signal input port 310 and at least two control signal output ports.
The signal input port 310 detects a level state of the main circuit and transmits a signal reflecting the level state to the control module 300. The signal input port 310 may sample the level state of the main circuit by means commonly known in the art and select and send the appropriate signal to the control module 300 as needed. Preferably, the above-described functions may be implemented, for example, by means of a logical buffer 500, which will be described in detail below.
The control signal output port includes a selection port 320 outputting a selection signal and a switch port 330 outputting a control signal controlling the power switch.
The control circuit further comprises a selection circuit 400. The selection circuit 400 is connected on the main circuit between the power supply PWR and one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawings), and is configured to selectively connect the power supply PWR to one of the first switch SW1 and the second switch SW2 (NC position) (the second switch SW2 in the embodiment shown in the drawings) or to connect the power supply PWR to the switch port 330 of the control module 300 (NO position) in response to a selection signal of the control module 300. Preferably, the above-described functions may be implemented, for example, by means of a logical buffer 500, which will be described in detail below. The selection circuit 400 may comprise, for example, a single pole double throw switch.
The control module 300 is configured to: the control module 300 detects a level state of an end portion where one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawing) is coupled to the power PWR, and when a predetermined power-off signal emitted from one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawing) is detected, a selection signal is emitted to cause the selection circuit 400 to connect the power PWR to the switch port 330 of the control module 300 according to the selection signal, and also to emit a control signal through the switch port 330 to turn off the power PWR. The power-down signal is, for example, a signal that one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the figure) is turned off. In a preferred embodiment, at least one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawings) may be a reset switch. The reset switch is commonly a reset switch, and in the case of the reset switch, the predetermined power-off signal may be an edge signal from one of the first switch SW1 and the second switch SW2 (in the embodiment shown in the figure, the second switch SW2), such as an edge signal from closed to open or an edge signal from open to closed, and so on. The edge signal may be a rising edge signal or a falling edge signal.
With continued reference to FIG. 1, in a preferred embodiment, a delay circuit TD may be provided between the selection circuit 400 and one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the figures). Preferably, the delay circuit TD may include an RC circuit, an operational amplifier circuit, or a logic gate circuit disposed in a butt joint manner.
In the above preferred embodiment comprising the delay circuit TD, the control module 300 may be further configured to: the selection signal is issued to connect the power supply PWR to the switch port 330 of the control module 300 when a signal that one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawing) is turned off is detected, and the power supply PWR is turned off by issuing a control signal through the switch port 330 after waiting until the customer has finished necessary operations. The necessary operation of the consumer may be a reset operation of some moving parts to ensure proper condition when the consumer loses power supply.
Preferably, the power operated by the control module 300 is also supplied entirely or selectively by the power supply PWR, and the control module 300 is configured to: the power supply is enabled at power-on, and when enabled, a selection signal is sent to connect the power supply PWR to the switch port 330 of the control module 300, and a control signal is sent through the switch port 330 to keep the power supply PWR on.
The above configuration of the control module 300 can be realized by means of a microcontroller CPU such as a single chip microcomputer by means known in the art, for example, a program stored therein, and will not be described herein.
A logic buffer 500 is provided between the signal input port 310 and one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the drawing) and/or between the selection port 320 and the selection circuit 400 and/or between the selection circuit 400 and the power supply PWR. The logic buffer 500 may be a commercially available logic buffer commonly used in the art, such as SN74AUP2G17 from Texas instruments. Other alternative logical buffers 500 are available, for example, in http:// www.ti.com.cn/zh-cn/logic-circuit/buffer-driver/overview. Specifications for the preferred embodiment SN74AUP2G17 of the above-described logical buffer 500 are found in the table below.
The logic buffer 500 may preferably be a shaping circuit, and the logic buffer 500 is configured to: adapting the electrical signal logic at the input and output of the logic buffer 500; and/or isolating the electrical signals at the input and output of the logic buffer 500 as desired; and/or adjusting the time delay of the electrical signal passing through the logic buffer 500.
The logic buffer 500 between the signal input port 310 and one of the first switch SW1 and the second switch SW2 (the second switch SW2 in the embodiment shown in the figure) can sample the state of the main circuit, and convert the state into a level logic state according to a threshold value and send the level logic state to the control module 300 through the signal input port 310.
According to the logic state of the level of the selection port 320, the logic buffer 500 between the selection port 320 and the selection circuit 400 can output a corresponding high-low level, thereby controlling the selection circuit 400 to switch NO/NC.
Depending on the logic state of the level of the switch port 330, the logic buffer 500 between the selection circuit 400 and the power supply PWR can output the corresponding level, controlling the power supply output through the secondary interface 120.
Several different scenarios of controlling a power switch that can be achieved using a preferred embodiment of a power switch control device according to the present invention are described in detail below.
Power-on scenario 1
In this scenario, the first switch SW1 is closed and the control module 300 is disabled by default to avoid contention with the control signal issued by the second switch SW 2. When the second switch SW2 is switched from the open state to the closed state and held, the power supply PWR is turned on.
Power on scenario 2
In this scenario, the first switch SW1 is closed, the control module 300 is enabled by default, and the delay unit TD is configured to ensure that the control module 300 will take over control of the power supply PWR in preference to the second switch SW 2. At this point, the control module 300 is configured to associate the selection circuit 400 with the switch port 330 before the second switch SW 2.
Power off scenario 1
In this scenario, the first switch SW1 is closed, and the power supply PWR is immediately turned off.
Power off scenario 2
In this scenario, the first switch SW1 is closed, the second switch SW2 switches from closed to open and remains locked in the open state, and the control module 300 is disabled by default. At this time, the power PWR is immediately turned off.
Power off scenario 3
In this scenario, the first switch SW1 is closed, the second switch SW2 is switched from closed to open and remains locked in the open state, the delay unit TD is configured to ensure that the control module 300 will take over control of the power supply PWR in preference to the second switch SW2, and the control module 300 is enabled (in other words, the second switch SW2 is disabled). After detecting the above state of the second switch SW2, the control module 300 turns off the power PWR after ensuring that the reset operation is completed.
Power-off scenario 4
In this scenario, the first switch SW1 is closed, the second switch SW2 is switched from open to closed to restore the open state (pulsing signal), the delay unit TD is configured to ensure that the control module 300 will take over control of the power supply PWR in preference to the second switch SW2, and the control module 300 is enabled (in other words, the second switch SW2 is disabled). Immediately after detecting the above state of the second switch SW2, the control module 300 turns off the power PWR. In this scenario, in effect, the final state of the second switch SW2 is already not determinative of the power off.
Switching off the power supply fieldLandscape 5
In this scenario, the first switch SW1 is closed, the second switch SW2 is switched from open to closed to restore the open state (pulsing signal), the delay unit TD is configured to ensure that the control module 300 will take over control of the power supply PWR in preference to the second switch SW2, and the control module 300 is enabled (in other words, the second switch SW2 is disabled). After detecting the above state of the second switch SW2, the control module 300 turns off the power PWR after ensuring that the reset operation is completed. In this scenario, in effect, the final state of the second switch SW2 is already not determinative of the power off.
Power off scenario 6
In this scenario, the first switch SW1 is closed, the second switch SW2 is switched from open to closed and held for a predetermined time (e.g., a few seconds), the delay unit TD is configured to ensure that the control module 300 will take over control of the power supply PWR in preference to the second switch SW2, and the control module 300 is enabled (in other words, the second switch SW2 is disabled). Immediately after detecting the above state of the second switch SW2, the control module 300 turns off the power PWR. In this scenario, it is actually achieved that immediate turn-off of the power supply is ensured by the second switch SW2 being closed for a predetermined time without immediately turning off the power supply after the second switch SW2 is closed.
While the present invention will be described in conjunction with the exemplary embodiments, it will be appreciated that this description is not intended to limit the invention to those embodiments illustrated. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention.
Claims (10)
1. A power switch control device is provided with a power switch,
it is characterized in that the preparation method is characterized in that,
the power switch control device comprises a main circuit and a control circuit, wherein,
the main circuit comprises:
the power supply (PWR) comprising a primary interface (110), a secondary interface (120) and a power output port;
a first switch (SW1) and a second switch (SW2), the first switch (SW1) connected to the primary interface (110), the second switch (SW2) connected to the secondary interface (120);
the control circuit includes:
a control module (300), wherein the control module (300) comprises a signal input port (310) and at least two control signal output ports, the signal input port (310) detects the level state of the main circuit and sends a signal reflecting the level state to the control module (300), and the control signal output ports comprise a selection port (320) for outputting a selection signal and a switch port (330) for outputting a control signal for controlling the power switch;
a selection circuit (400), the selection circuit (400) connected on the main circuit between the power supply (PWR) and one of the first switch (SW1) and the second switch (SW2) and configured to selectively connect the power supply (PWR) to the one of the first switch (SW1) and the second switch (SW2) or to connect the power supply (PWR) to the switch port (330) of the control module (300) in response to a selection signal of the control module (300).
2. The power switch control device of claim 1,
the control module (300) is configured to: the control module (300) detects a level state of an end portion where the one of the first switch (SW1) and the second switch (SW2) is coupled to the power supply (PWR), issues a selection signal when detecting a predetermined power-off signal issued by the one of the first switch (SW1) and the second switch (SW2), causes the selection circuit (400) to connect the power supply (PWR) to the switch port (330) of the control module (300) according to the selection signal, and also issues a control signal through the switch port (330) to turn off the power supply (PWR).
3. The power switch control device of claim 2,
the one of the first switch (SW1) and the second switch (SW2) is a reset switch, and the predetermined power-off signal is an edge signal issued by the one of the first switch (SW1) and the second switch (SW 2).
4. The power switch control device of claim 1,
a time delay circuit (TD) is provided between the selection circuit (400) and the one of the first switch (SW1) and the second switch (SW 2);
the control module (300) is configured to: -issuing a selection signal to connect said power supply (PWR) to said switching port (330) of said control module (300) when detecting the opening of said one of said first switch (SW1) and said second switch (SW2), and-waiting until the end of the necessary operation of the consumer before issuing a control signal through said switching port (330) to turn off said power supply (PWR).
5. The power switch control device of claim 4,
the power operated by the control module (300) is supplied by the power supply (PWR), and the control module (300) is configured to: is activated upon power-up and, when activated, issues a selection signal to connect the power supply (PWR) to the switch port (330) of the control module (300) and to keep the power supply (PWR) switched on by issuing a control signal through the switch port (330).
6. The power switch control device of claim 1,
a logic buffer (500) is provided between the signal input port (310) and the one of the first switch (SW1) and the second switch (SW 2);
and/or
-providing a logical buffer (500) between the selection port (320) and the selection circuit (400);
and/or
A logic buffer (500) is provided between the selection circuit (400) and the power supply (PWR).
7. The power switch control device of claim 6,
the logic buffer (500) is a shaping circuit, and the logic buffer (500) is configured to:
adapting the electrical signal logic at the input and output of the logic buffer (500);
and/or
Isolating the electrical signals at the input and output of the logic buffer (500) as required;
and/or
Adjusting a time delay of the electrical signal passing through the logic buffer (500).
8. The power switch control device of claim 1,
the selection circuit (400) is connected on the main circuit between the power supply (PWR) and the second switch (SW 2).
9. An electrical consumer comprising a power switch control apparatus as claimed in any preceding claim, the electrical consumer being powered by the power source.
10. The consumer device according to claim 9,
the powered device is a sample preparation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922195556.1U CN211293683U (en) | 2019-12-03 | 2019-12-03 | Power switch control device and electric equipment comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922195556.1U CN211293683U (en) | 2019-12-03 | 2019-12-03 | Power switch control device and electric equipment comprising same |
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| CN211293683U true CN211293683U (en) | 2020-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568360A (en) * | 2021-09-24 | 2021-10-29 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568360A (en) * | 2021-09-24 | 2021-10-29 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
| CN113568360B (en) * | 2021-09-24 | 2021-11-30 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
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