CN214380097U - Touch screen power supply positive and negative connection compatible circuit, touch screen and electrical equipment - Google Patents

Abstract

The application relates to a touch screen power supply positive and negative connection compatible circuit, a touch screen and electrical equipment, and belongs to the technical field of touch screen power supply. The application includes: a line control module; the DC/DC module is used for receiving the direct current output by the line control module; when the circuit control module executes the first combination action, the positive input end of the circuit control module and the positive input end of the DC/DC module can be electrically conducted, and the negative input end of the circuit control module and the negative input end of the DC/DC module can be electrically conducted; and when the second combination action is executed, the negative input end of the line control module and the positive input end of the DC/DC module can be electrically conducted, and the positive input end of the line control module and the negative input end of the DC/DC module can be electrically conducted. Through the application, the normal work of the positive electrode and the negative electrode of the power supply of the touch screen can be realized.

Description

Touch screen power supply positive and negative connection compatible circuit, touch screen and electrical equipment

Technical Field

The application belongs to the technical field of power supply of touch screens, and particularly relates to a positive and negative connection compatible circuit of a power supply of a touch screen, the touch screen and electrical equipment.

Background

The industrial touch screen is more and more widely applied in daily life, and the safe operation of equipment is very important. Under normal conditions, a power supply is input according to a positive line and a negative line of the power supply, and sometimes, the situation that the positive line and the negative line of the power supply are reversely connected occurs, so that a circuit inside a load is damaged. In the related art, a diode may be connected to the power circuit to prevent reverse connection, and the implementation manner is as follows: when the power supply is normally connected, the diode is conducted, and the load works normally; when the power supply is reversely connected, the diode is not conducted, and the load cannot work, so that the damage of the internal circuit of the load is avoided. Under the above circumstances, when the power supply is reversely connected, the positive electrode and the negative electrode of the power supply must be manually connected again to turn on the load to start working, which causes inconvenience in use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art at least to a certain extent, the application provides the positive and negative connection compatible circuit of the touch screen power supply, the touch screen and the electrical equipment, which are beneficial to realizing the normal work when the positive and negative electrodes of the touch screen power supply are connected reversely.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect,

the application provides a touch-sensitive screen power positive and negative compatible circuit that connects includes:

a line control module; and

the DC/DC module is used for receiving the direct current output by the line control module;

when the circuit control module executes a first combination action, the positive input end of the circuit control module and the positive input end of the DC/DC module can be electrically conducted, and the negative input end of the circuit control module and the negative input end of the DC/DC module can be electrically conducted; and when the second combination action is executed, the negative input end of the line control module and the positive input end of the DC/DC module can be electrically conducted, and the positive input end of the line control module and the negative input end of the DC/DC module can be electrically conducted.

Further, the line control module includes:

the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all provided with a control end and an on-off end;

wherein the content of the first and second substances,

one end of the first switch unit and one end of the second switch unit are respectively connected with the positive input end of the line control module, and one end of the third switch unit and one end of the fourth switch unit are respectively connected with the negative input end of the line control module;

the other end of the first switch unit and the other end of the third switch unit are respectively connected with the positive output end of the line control module, and the other end of the second switch unit and the other end of the fourth switch unit are respectively connected with the positive output end of the line control module.

Further, the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all electronic switches.

Further, the electronic switch includes: a relay, or an electronic switch tube.

Further, the touch screen power supply positive and negative connection compatible circuit further comprises:

the detection module is used for detecting the electrical parameters of the direct current input into the line control module;

and the processing module is used for outputting a control signal for executing the first combined action or the second combined action to the line control module according to the electrical parameter detected by the detection module.

Further, the detection module is a voltage detection module.

Furthermore, the processing module adopts a singlechip.

Further, the touch screen power supply positive and negative connection compatible circuit further comprises:

and the indicating module is connected with the processing module and is used for indicating whether the positive electrode and the negative electrode of the power supply of the touch screen are connected correctly or reversely.

In a second aspect of the present invention,

the application provides a touch screen, includes: the touch screen power supply positive and negative connection compatible circuit.

In a third aspect,

the application provides an electrical equipment, includes: such as the touch screen described above.

This application adopts above technical scheme, possesses following beneficial effect at least:

the application provides a touch screen power supply positive and negative connection compatible circuit, a line control module is configured in front of a DC/DC module, when the line control module executes a first combination action, the positive input end of the line control module and the positive input end of the DC/DC module can be electrically conducted, the negative input end of the line control module and the negative input end of the DC/DC module can be electrically conducted, the first combination action is suitable for the condition that the positive and negative electrodes of a touch screen power supply are correctly connected, when the line control module executes a second combination action, the negative input end of the line control module and the positive input end of the DC/DC module can be electrically conducted, the positive input end of the line control module and the negative input end of the DC/DC module can be electrically conducted, the second combination action is suitable for the condition that the positive and negative electrodes of the touch screen power supply are reversely connected, therefore, the first combination action and the second combination action which can be executed by the circuit control module are beneficial to realizing normal work when the positive electrode and the negative electrode of the touch screen power supply are reversely connected, so that a user does not need to pull out a connector to access again when the positive electrode and the negative electrode of the touch screen power supply are reversely connected, and the convenience is brought to the user.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram illustration of a touch screen power supply flip-flop compatibility circuit in accordance with an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating the structure of a line control module in accordance with an exemplary embodiment;

FIG. 3 is a block diagram illustration of a touch screen power supply flip-flop compatibility circuit in accordance with another exemplary embodiment;

FIG. 4 is a block diagram schematic diagram illustrating a touch screen in accordance with an exemplary embodiment;

FIG. 5 is a block diagram schematic diagram of an appliance device shown in accordance with an exemplary embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a block diagram illustrating a touch screen power supply forward and reverse compatible circuit according to an exemplary embodiment, and as shown in fig. 1, the touch screen power supply forward and reverse compatible circuit 1 includes:

a line control module 11; and

a DC/DC module 12, configured to receive the direct current output by the line control module 11;

when the line control module 11 performs the first combination action, the positive input end of the line control module 11 and the positive input end of the DC/DC module 12 can be electrically connected, and the negative input end of the line control module 11 and the negative input end of the DC/DC module 12 can be electrically connected; when the second combination action is executed, the negative input end of the line control module 11 and the positive input end of the DC/DC module 12 can be electrically conducted, and the positive input end of the line control module 11 and the negative input end of the DC/DC module 12 can be electrically conducted.

Specifically, in the actual operation of accessing the touch screen to the external direct current 2, the positive electrode and the negative electrode of the power supply may be connected reversely. In order to realize normal work when the positive electrode and the negative electrode of the touch screen power supply are connected reversely, the scheme of the touch screen power supply forward-reverse connection compatible circuit 1 is provided, and the scheme realizes the forward-reverse connection compatibility of the power supply based on a circuit control module 11 configured in front of a DC/DC module 12. In the initial state, the circuit control module 11 is in an off state as a whole, the circuit control module 11 can be controlled to perform a first combination action and a second combination action, when the first combination action is performed, the positive input end of the circuit control module 11 and the positive input end of the DC/DC module 12 can be electrically conducted (the circuits a and H are conducted in fig. 1), and the negative input end of the circuit control module 11 and the negative input end of the DC/DC module 12 can be electrically conducted (the circuits B and L are conducted in fig. 1), the first combination action is suitable for the case that the positive and negative terminals of the touch screen power supply are correctly connected, and when the second combination action is performed, the negative input end of the circuit control module 11 and the positive input end of the DC/DC module 12 can be electrically conducted (the circuits a and L are conducted in fig. 1), and the positive input end of the circuit control module 11 and the negative input end of the DC/DC module 12 can be electrically conducted (the circuits a and L are conducted in fig. 1) The paths B and H are turned on), the second combination action is suitable for the condition that the positive and negative electrodes of the touch screen power supply are reversely connected, it can be seen that the first combination action and the second combination action which can be executed by the circuit control module 11 are selectively executed under the condition that the positive and negative electrodes of the touch screen power supply are correctly connected, and the second combination action is selectively executed under the condition that the positive and negative electrodes of the touch screen power supply are reversely connected, which is helpful for realizing normal work when the positive and negative electrodes of the touch screen power supply are reversely connected, so that a user does not need to pull out the connector for re-access when the positive and negative electrodes of the touch screen power supply are reversely connected, thereby realizing convenient use of the user.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a line control module according to an exemplary embodiment, and as shown in fig. 2, the line control module 11 includes:

a first switching unit 101, a second switching unit 102, a third switching unit 103, and a fourth switching unit 104, each having a control terminal and an on/off terminal (each switching unit in fig. 2 shows only the on/off terminal);

wherein the content of the first and second substances,

one end of the first switch unit 101 and one end of the second switch unit 102 are respectively connected to a positive input end of the line control module 11, and one end of the third switch unit 103 and one end of the fourth switch unit 104 are respectively connected to a negative input end of the line control module 11;

the other end of the first switch unit 101 and the other end of the third switch unit 103 are respectively connected to the positive output end of the line control module 11, and the other end of the second switch unit 102 and the other end of the fourth switch unit 104 are respectively connected to the positive output end of the line control module 11.

Specifically, the first switch unit 101, the second switch unit 102, the third switch unit 103, and the fourth switch unit 104 form an array switch, and the on/off end of each switch unit can be controlled by the control end of the switch unit, wherein when the first switch unit 101 and the fourth switch unit 104 are closed, the circuit control module 11 implements a first combination action, and is suitable for a case where the positive and negative electrodes of the power supply of the touch screen are correctly connected; when the second switch unit 102 and the third switch unit 103 are closed, the circuit control module 11 implements a second combination action, which is suitable for the situation that the positive electrode and the negative electrode of the power supply of the touch screen are reversely connected.

In practical applications, the first switch unit 101, the second switch unit 102, the third switch unit 103, and the fourth switch unit 104 are all electronic switches, and the electronic switches may be implemented by relays, electronic switch tubes, and the like. The relay can be a solid-state relay, and the electronic switch tube can be a MOS tube, a triode and the like.

Referring to fig. 1, in an embodiment, the touch screen power supply forward/reverse connection compatible circuit 1 further includes:

a detection module 13, configured to detect an electrical parameter of the direct current input to the line control module 11;

and a processing module 14, configured to output a control signal for executing the first combination action or the second combination action to the line control module 11 according to the electrical parameter detected by the detecting module 13.

The detection module 13 is configured to detect an electrical parameter of the direct current input to the circuit control module 11, where the electrical parameter may be a voltage parameter or a current parameter, and during detection, one of the electrical parameters may be detected, or all of the electrical parameters may be detected. Taking the detection of the voltage parameter as an example, that is, the detection module 13 is a voltage detection module, referring to fig. 1, when the touch screen is connected to the external direct current 2, if the positive and negative poles of the direct current are correctly connected, the detection module 13 can detect the voltage parameter on the line a, and if the positive and negative poles of the direct current are reversely connected, the detection module 13 can detect the voltage parameter on the line B.

For the processing module 14, a comparator may be built in to compare the voltage parameters on the lines a and B, and then output a control signal according to the comparison result. For example, when the first switch unit 101, the second switch unit 102, the third switch unit 103 and the fourth switch unit 104 respectively correspond to four output pins of the access processing module 14, where, when the first switch unit 101 and the fourth switch unit 104 correspond to pins outputting a high level, the second switch unit 102 and the third switch unit 103 correspond to pins outputting a low level; and when the first switching unit 101 and the fourth switching unit 104 output a low level at their corresponding pins, the second switching unit 102 and the third switching unit 103 output a high level at their corresponding pins.

The line control module 11 is in an overall off state in an initial state, that is, each switch unit is in an off state, and needs to perform on control according to a detection result. Referring to fig. 1, when the positive and negative terminals of the direct current of the touch screen are correctly connected, the detection module 13 may detect the voltage on the line a, but cannot detect the voltage on the line B, and the comparator of the processing module 14 may enable the first switch unit 101 and the fourth switch unit 104 to output a high level corresponding to the pins according to the detected voltage on the line a and the detected voltage on the line B, so that the line control module 11 performs the first combination action, that is, the positive input terminal of the line control module 11 is electrically connected to the positive input terminal of the DC/DC module 12 (the lines a and H in fig. 1 are electrically connected), and the negative input terminal of the line control module 11 is electrically connected to the negative input terminal of the DC/DC module 12 (the lines B and L in fig. 1 are electrically connected); meanwhile, since the processing module 14 further makes the corresponding pins of the second switching unit 102 and the third switching unit 103 output low levels, the line control module 11 does not control the second switching unit 102 and the third switching unit 103, and the second switching unit 102 and the third switching unit 103 still maintain the off state.

When the positive and negative poles of the direct current are connected in opposite directions, the detection module 13 may detect the voltage on the line B, but may not detect the voltage on the line a, and the comparator of the processing module 14 may cause the corresponding pins of the second switching unit 102 and the third switching unit 103 to output a high level according to the detected voltage on the line B and the detected voltage on the line a, so as to cause the line control module 11 to perform a second combination action, that is, the negative input terminal of the line control module 11 is electrically connected to the positive input terminal of the DC/DC module 12 (the lines a and L are electrically connected in fig. 1), and the positive input terminal of the line control module 11 is electrically connected to the negative input terminal of the DC/DC module 12 (the lines B and H are electrically connected in fig. 1); meanwhile, since the processing module 14 further enables the corresponding pins of the first switching unit 101 and the fourth switching unit 104 to output low levels, the line control module 11 does not control the first switching unit 101 and the fourth switching unit 104, and the first switching unit 101 and the fourth switching unit 104 still maintain the off state.

The processing module 14 may also directly determine according to a voltage detection signal received by the receiving pin, please refer to fig. 1, when the external input power is normally connected, the line a is positive, the line B is GND (direct current ground), the detection module 13 sends the detected voltage signal to the processing module 14, the processing module 14 compares the received voltage signal with a prestored voltage parameter, and can confirm that the line a is connected to the direct current positive electrode, and then send a corresponding instruction to the line control module 11, so that the line a is connected to the H line, the line B is connected to the L line, at this time, the voltage is normally connected to the industrial touch screen DC/DC module 12, and the touch screen is in a normal working state. And when external input power source reverse access, circuit B is positive, circuit A is GND, detection module 13 sends the voltage signal who detects for processing module 14, processing module 14 compares the voltage signal who receives with the voltage parameter of prestoring, can confirm that circuit B inserts the direct current anodal, then send corresponding instruction to line control module 11, make circuit B and H line switch on, circuit A and L line switch on, thereby guaranteed that H is positive all the time, L is GND all the time, the normal access touch-sensitive screen DC/DC module 12 of voltage this moment, make the touch-sensitive screen can be in normal operating condition when external input power source reverse access.

In practical applications, the processing module 14 may be implemented by a processor such as a single chip.

Referring to fig. 3, fig. 3 is a block diagram illustrating a touch screen power supply forward and reverse compatible circuit according to another exemplary embodiment, and as shown in fig. 3, the touch screen power supply forward and reverse compatible circuit 1 further includes:

and the indicating module 15 is connected with the processing module 14 and is used for indicating whether the positive electrode and the negative electrode of the power supply of the touch screen are connected correctly or reversely.

Specifically, through the above related embodiment scheme, normal operation can be realized when the positive electrode and the negative electrode of the touch screen power supply are connected reversely, so that a user does not need to pull out a connector to access the touch screen power supply again when the positive electrode and the negative electrode of the touch screen power supply are connected reversely, and convenience is brought to the user. On this basis, the present application further indicates, by the indication module 15, whether the direct current is in a positive connection or a negative connection, so as to enable a user to know the current positive and negative connection states, for example, when the processing module 14 determines that the positive and negative electrodes of the direct current of the touch screen are in the positive connection according to the voltages of the lines a and B detected by the detection module 13, the line control module 11 executes a first combination action, and at the same time, the indication module 15 indicates that the positive and negative electrodes of the power supply of the touch screen are in the correct connection (for example, the positive connection can be indicated by two parallel arrow lines); when the processing module 14 determines that the positive and negative electrodes of the direct current of the touch screen are connected reversely according to the voltages of the lines a and B detected by the detection module 13, the line control module 11 executes a second combination action, and at the same time, the indication module 15 indicates that the positive and negative electrodes of the power supply of the touch screen are connected reversely (for example, the connection can be indicated by two crossed arrow lines).

Referring to fig. 4, fig. 4 is a schematic block diagram illustrating a touch screen according to an exemplary embodiment, and as shown in fig. 4, the touch screen 4 includes:

the touch screen power supply positive and negative connection compatible circuit 1 as described in any one of the above.

With regard to the touch screen 4 in the above-described embodiment, the specific manner in which the touch screen power supply forward-reverse connection compatible circuit 1 performs the operation has been described in detail in the above-described embodiment, and will not be described in detail here.

Referring to fig. 5, fig. 5 is a schematic block diagram of an electrical apparatus according to an exemplary embodiment, and as shown in fig. 5, the electrical apparatus 5 includes:

such as the touch screen 4 described above.

In practical applications, the electrical equipment 5 may include various machine tool equipment, robot equipment, etc. configured to operate with a touch screen.

With regard to the electrical apparatus 5 in the above embodiment, the specific manner of the operation performed by the touch screen power supply forward-backward compatible circuit 1 has been described in detail in the above related embodiment, and will not be described in detail here.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.

In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. 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.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A touch screen power supply positive and negative connection compatible circuit is characterized by comprising:

a line control module; and

the DC/DC module is used for receiving the direct current output by the line control module;

when the circuit control module executes a first combination action, the positive input end of the circuit control module and the positive input end of the DC/DC module can be electrically conducted, and the negative input end of the circuit control module and the negative input end of the DC/DC module can be electrically conducted; and when the second combination action is executed, the negative input end of the line control module and the positive input end of the DC/DC module can be electrically conducted, and the positive input end of the line control module and the negative input end of the DC/DC module can be electrically conducted.

2. The touch screen power supply positive-negative connection compatible circuit according to claim 1, wherein the line control module comprises:

the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all provided with a control end and an on-off end;

wherein the content of the first and second substances,

one end of the first switch unit and one end of the second switch unit are respectively connected with the positive input end of the line control module, and one end of the third switch unit and one end of the fourth switch unit are respectively connected with the negative input end of the line control module;

the other end of the first switch unit and the other end of the third switch unit are respectively connected with the positive output end of the line control module, and the other end of the second switch unit and the other end of the fourth switch unit are respectively connected with the positive output end of the line control module.

3. The touch screen power supply positive-negative connection compatible circuit according to claim 2, wherein the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all electronic switches.

4. The touch screen power supply forward-reverse connection compatible circuit according to claim 3, wherein the electronic switch comprises: a relay, or an electronic switch tube.

5. The touch screen power supply forward-reverse compatible circuit according to any one of claims 1-4, further comprising:

the detection module is used for detecting the electrical parameters of the direct current input into the line control module;

and the processing module is used for outputting a control signal for executing the first combined action or the second combined action to the line control module according to the electrical parameter detected by the detection module.

6. The touch screen power supply positive-negative connection compatible circuit according to claim 5, wherein the detection module is a voltage detection module.

7. The touch screen power supply positive-negative connection compatible circuit according to claim 5, wherein the processing module adopts a single chip microcomputer.

8. The touch screen power supply forward-reverse compatible circuit of claim 5, further comprising:

and the indicating module is connected with the processing module and is used for indicating whether the positive electrode and the negative electrode of the power supply of the touch screen are connected correctly or reversely.

9. A touch screen, comprising: the touch screen power supply flip-flop compatibility circuit of any of claims 1-8.

10. An electrical device, comprising: the touch screen of claim 9.

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