CN221261542U - On-off control circuit and customs inspection desk equipment - Google Patents

Abstract

The utility model discloses a switching on/off control circuit and customs inspection desk equipment, wherein the switching on/off control circuit comprises: the self-locking type double-control switch, the first 5V relay, the power relay module and the alternating current-to-direct current module are adopted to control the on-off of the industrial personal computer, and as the self-locking type double-control switch cannot rebound when being pressed down, a user can judge the on-off or the on-off according to the state of the self-locking type double-control switch, so that the probability of misoperation can be reduced, the power relay module is adopted to supply power to multiple devices, and compared with the time sequence controller provided by the related technology, the probability of disordered on-off time sequence can be reduced, the control logic is simplified, and the cost is reduced.

Description

On-off control circuit and customs inspection desk equipment

Technical Field

The utility model relates to the technical field of electronic circuits, in particular to a startup and shutdown control circuit and customs inspection desk equipment.

Background

The intelligent auxiliary platform is characterized in that commodity image information or commodity bar code information is identified through industrial camera image identification and code scanning identification, and the identified commodity image information or commodity bar code information is matched into a commodity tax-finishing price database, so that commodity price is estimated rapidly, and a reference is provided for customs personnel to estimate tax-finishing price.

Customs inspection desk equipment generally comprises a server, an industrial personal computer, a customs display screen and other electronic equipment, such as a switch, a hard disk video recorder, a floor scale, a display screen, a passenger display screen, a passport scanner, a printer and the like, the customs inspection desk equipment is powered on and off at present, a self-recovery key and a time schedule controller are generally adopted, in the switching on and off process, if the self-recovery key is pressed for a short time, the time schedule controller can respond to the switching on and off operation, and the switching on and off key of the industrial personal computer does not respond to the switching on and off operation, so that the phenomenon that the switching on and off of the equipment are inconsistent with the switching on and off of the industrial personal computer is caused, the switching on and off time schedule is disordered, and if the industrial personal computer does not respond during the switching off, the industrial personal computer is directly powered off, and the control logic of the time schedule controller is complex, and the cost is high.

Disclosure of utility model

The utility model provides a switching on/off control circuit and customs inspection desk equipment, which are used for solving the problems that switching on/off time sequence is disordered, control logic is complex and cost is high when the customs inspection desk equipment is switched on/off in the prior art.

In a first aspect, an embodiment of the present utility model provides an on-off control circuit, which is applied to customs inspection desk equipment, where the customs inspection desk equipment includes an external plug, a display screen under customs, an industrial personal computer and an electronic device, and the on-off control circuit includes: the self-locking double-control switch, a first 5V relay, a power relay module and an alternating current-to-direct current module;

The first public end of the self-locking double-control switch is electrically connected with the live wire end of the external plug, the first normal end of the self-locking double-control switch is electrically connected with the control end of the power relay module, the second public end of the self-locking double-control switch is electrically connected with the positive power input end of the first 5V relay and the first output end of the alternating current-to-direct current module, the second normal end of the self-locking double-control switch is electrically connected with the positive trigger signal end of the first 5V relay, and the grounding end of the self-locking double-control switch is electrically connected with the negative power input end of the first 5V relay, the negative trigger signal end of the first 5V relay and the second output end of the alternating current-to-direct current module;

the public end of the first 5V relay is electrically connected with a first on-off end of the industrial personal computer, and the normal end of the first 5V relay is electrically connected with a second on-off end of the industrial personal computer;

The power relay module is characterized in that a power positive input end of the power relay module is electrically connected with an input end of the power relay module and a live wire end of the external plug, a power negative input end of the power relay module is electrically connected with a negative input end of the alternating current-to-direct current module, a zero line end of the external plug, a power negative input end of the electronic equipment, a power negative input end of a display screen under a customs and a power negative input end of an industrial personal computer, and an output end of the power relay module is electrically connected with a positive input end of the alternating current-to-direct current module, a power positive input end of the electronic equipment, a power positive input end of the display screen under the customs and a power positive input end of the industrial personal computer.

In one possible implementation, the power relay module includes a first power relay that is a single-pass output relay;

The power supply positive input end of the first power supply relay is used as the power supply positive input end of the power supply relay module, the power supply negative input end of the first power supply relay is used as the power supply negative input end of the power supply relay module, the input end of the first power supply relay is used as the input end of the power supply relay module, and the output end of the first power supply relay is used as the output end of the power supply relay module.

In one possible implementation, the power relay module includes a first power relay that is a two-way output relay;

the first input end of the first power relay and the second input end of the first power relay are electrically connected with the live wire end of the external plug;

A first output end of the first power relay and a positive input end of the alternating current-to-direct current module;

The second output end of the first power relay is electrically connected with the power supply positive input end of the electronic equipment, the power supply positive input end of the customs display screen and the power supply positive input end of the industrial personal computer.

In one possible implementation manner, the power relay module further includes a first power relay and a second power relay, where the first power relay is a relay with single-path output, and the second power relay is a relay with single-path output;

The input end of the first power relay and the input end of the second power relay are electrically connected with the live wire end of the external plug;

The output end of the first power relay is electrically connected with the power supply positive input end of the customs display screen, the power supply positive input end of the industrial personal computer and the positive input end of the alternating current-to-direct current module;

And the output end of the second power relay is electrically connected with the power supply positive input end of the electronic equipment.

In one possible implementation manner, the power relay module further includes a first power relay and a second power relay, where the first power relay is a relay with two-way output, and the second power relay is a relay with one-way output;

The first input end of the first power relay, the second input end of the first power relay and the input end of the second power relay are electrically connected with the live wire end of the external plug;

The first output end of the first power relay is electrically connected with the power supply positive input end of the customs display screen and the power supply positive input end of the industrial personal computer, and the second output end of the first power relay is electrically connected with the positive input end of the alternating current-to-direct current module;

And the output end of the second power relay is electrically connected with the power supply positive input end of the electronic equipment.

In one possible implementation, a second 5V relay is also included;

The power positive input end of the second 5V relay is electrically connected with the second normally-closed end of the self-locking double-control switch, the power negative input end of the second 5V relay is electrically connected with the trigger signal negative end of the second 5V relay and the grounding end of the self-locking double-control switch, the normally-closed end of the second 5V relay is electrically connected with the LED driving end of the self-locking double-control switch, and the public end of the second 5V relay is electrically connected with the power positive input end of the first 5V relay.

In one possible implementation, the first power relay is a time delay relay.

In a second aspect, an embodiment of the present utility model further provides a customs inspection desk device, including an external plug, a display screen under customs, an industrial personal computer, an electronic device, and the on-off control circuit according to any one of the first aspect, where the on-off control circuit includes a self-locking double-control switch, a first 5V relay, a power relay module, and an ac-to-dc module;

The live wire end of the external plug is electrically connected with the first public end of the self-locking double-control switch and the power positive input end of the power relay module, and the zero wire end of the external plug is electrically connected with the power negative input end of the relay module, the power negative input end of the electronic equipment, the power negative input end of the customs display screen and the power negative input end of the industrial personal computer;

the power supply positive input end of the electronic equipment, the power supply positive input end of the display screen under the customs and the power supply positive input end of the industrial personal computer are electrically connected with the output end of the relay module.

In one possible implementation, the customs inspection desk apparatus further includes a bottom strip;

the bottom power strip is connected between the electronic equipment and the relay module.

In one possible implementation, the customs inspection desk apparatus further includes a server;

The power supply positive input end of the server is electrically connected with the live wire end of the external plug, and the power supply negative input end of the server is electrically connected with the zero wire end of the external plug.

The utility model has the following beneficial effects:

The on-off control circuit for customs inspection desk equipment provided by the embodiment of the utility model adopts the self-locking double-control switch and the first 5V relay to control the on-off of the industrial personal computer, and because the self-locking double-control switch cannot rebound when being pressed down, a user can judge whether to start or shut down according to the state of the self-locking double-control switch, thereby reducing the probability of misoperation, adopting the power relay module to supply power to multiple equipment, and compared with the time sequence controller provided by the related art, the on-off control circuit can simplify control logic and reduce cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a power on/off control circuit according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 3 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 8 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 9 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 11 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 12 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 13 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 14 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 15 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 16 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

fig. 17 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 18 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model;

Fig. 19 is a schematic structural diagram of a customs inspection desk device according to an embodiment of the present utility model;

Fig. 20 is a schematic flow chart of a customs inspection desk control device according to an embodiment of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Besides providing reference for customs personnel to estimate tax-finished price, the customs inspection desk device also has the functions of certificate reading, personnel evidence comparison, audio recording, commodity weighing and the like, intelligently generates inspection files comprising operation information, article information, video information and audio information, achieves interactive guiding type retention of the operation information, the voice information and the video information, and effectively enhances monitoring and controlling the whole inspection process.

The customs inspection desk equipment mainly realizes the functions of on-off control, commodity photographing, commodity bar code scanning, multi-screen display, video monitoring, video playback, environment illumination, material printing, network connection and the like.

In order to facilitate the operation of customs personnel, the one-key power on/off function can be realized by pressing a key to start or stop the customs inspection desk equipment and realize the power supply of multiple equipment, one way of the customs inspection desk equipment provided in the related art is to adopt a time sequence controller to supply power to the multiple equipment, and adopt one way of self-recovery key to control the start/stop of the industrial personal computer and the start of the time sequence controller, when the key is pressed, the time sequence controller is started to supply power to the equipment, the industrial personal computer is started, the key is pressed again, the equipment is powered off, and the industrial personal computer is powered off; the other mode of the customs inspection desk equipment on-off and power supply provided in the related technology is that a double-way self-recovery key is adopted to respectively control the on-off of the industrial personal computer and the start and the off of the time sequence controller, and when the key is pressed, the time sequence controller is started to supply power to the equipment, the industrial personal computer is started, the key is pressed again, the equipment is powered off, and the industrial personal computer is powered off.

The self-recovery key is adopted to control the customs inspection equipment to be started and shut down, misoperation can possibly occur, the time sequence controller is adopted to control the equipment to supply power, the control logic is complex, and the cost is high.

The application provides a switching on/off control circuit and customs inspection desk equipment, wherein the switching on/off control circuit comprises a self-locking double-control switch, a first 5V relay, a power relay module and an alternating current-to-direct current module, the switching on/off of an industrial personal computer is controlled through the self-locking double-control switch and the first 5V relay, the first 5V relay is powered through the alternating current-to-direct current module, multiple devices are powered through the power relay module, the probability of misoperation of the switching on/off of the self-locking double-control switch can be reduced, and compared with a time sequence controller, the power relay module can simplify control logic and reduce cost.

As shown in fig. 1, a schematic structural diagram of a switching on/off control circuit provided by an embodiment of the present utility model is provided, where the switching on/off control circuit is applied to customs inspection equipment, and the customs inspection equipment includes an external plug 1, a display screen 2 under customs, an industrial personal computer 3 and an electronic device 4, and the switching on/off control circuit includes a self-locking double-control switch 11, a first 5V relay 12, a power relay module 13, and an alternating current-to-direct current module (AC-DC module) 14;

The first common end C1 of the self-locking double-control switch 11 is electrically connected with the live wire end L of the external plug 1, the first normal open end NO1 of the self-locking double-control switch 11 is electrically connected with the control end of the power relay module 13, the second common end C2 of the self-locking double-control switch 11 is electrically connected with the positive power input end DC+ of the first 5V relay 12 and the first output end of the AC-DC module 14, the second normal open end CO2 of the self-locking double-control switch 11 is electrically connected with the positive trigger signal end IN+ of the first 5V relay 12, and the ground end GND of the self-locking double-control switch 11 is electrically connected with the negative power input end DC-, the trigger signal negative end IN-of the first 5V relay 12 and the second output end of the AC-DC module 14;

the public end COM of the first 5V relay 12 is electrically connected with the first on-off end P1 of the industrial personal computer 3, and the normally open end NO of the first 5V relay 12 is electrically connected with the second on-off end P2 of the industrial personal computer 3;

The power positive input end of the power relay module 13 is electrically connected with the 13 input end of the power relay module and the live wire end L of the external plug 1, the power negative input end of the power relay module 13 is electrically connected with the negative input end IN2 of the AC-DC module 14, the zero line end N of the external plug 1, the power negative input end of the electronic equipment 4, the power negative input end of the customs display screen 2 and the power negative input end of the industrial personal computer 3, and the output end of the power relay module 13 is electrically connected with the positive input end IN1 of the AC-DC module 14, the power positive input end of the electronic equipment 4, the power positive input end of the customs display screen 2 and the power positive input end of the industrial personal computer 3.

The on-off control circuit for customs inspection desk equipment provided by the embodiment of the utility model adopts the self-locking double-control switch and the first 5V relay to control the on-off of the industrial personal computer, and because the self-locking double-control switch cannot rebound when being pressed down, a user can judge whether to start or shut down according to the state of the self-locking double-control switch, thereby reducing the probability of misoperation, adopting the power relay module to supply power to multiple equipment, and compared with the time sequence controller provided by the related art, the on-off control circuit can reduce the probability of disordered on-off time sequence, simplify control logic and reduce cost.

It should be noted that, in the electronic device in the embodiment of the present utility model, that is, other devices except the industrial personal computer and the display screen under customs in the customs inspection desk device, for example, a camera, an electronic scale, an environmental light supplementing lamp, etc.

The AC-DC module in the embodiment of the present utility model may be any module capable of converting 220V AC power into 5V DC power, which is not limited in the embodiment of the present utility model.

In a specific implementation, the customs inspection desk device may further include a bottom socket 6, as shown in fig. 2, where the bottom socket 6 is connected between the power relay module 13 and the electronic device 4, and when a plurality of electronic devices 4 are included, the plurality of electronic devices 4 may be powered through the bottom socket 6.

As shown in fig. 1 and 2, the customs inspection desk device may further include a server 5, wherein a power supply positive input end of the server 5 is electrically connected with the live wire end L of the external plug 1, and a power supply negative input end of the server 5 is electrically connected with the neutral wire end N of the external plug 1.

In the embodiment of the utility model, the server needs to work for a long time, so the electric connection between the server 5 and the power plug is not controlled by a switch, namely the electric connection is directly connected with a power supply, and the server can be electrified and started up to work normally as long as an external power supply is connected.

In addition, as can be seen from fig. 1 and 2, the protection terminals of the devices in the customs inspection desk device are electrically connected with the ground terminal E of the external plug, such as the server 5, the electronic device 4, the undersea display screen 2 and the industrial personal computer 3.

In one embodiment, the power relay module in the embodiment of the utility model may include a first power relay, where the first power relay may be a relay with a single output, and may also be a relay with a double output, and in another embodiment, the power relay module may further include a first power relay and a second power relay, where the first power relay may be a relay with a double output, and the second power relay may be a relay with a single output. The following describes the above embodiments in detail, respectively.

As shown in fig. 1, the power relay module 13 includes a single-path output first power relay 131, a positive power input terminal a+ of the first power relay 131 is used as a positive power input terminal of the power relay module 13, a negative power input terminal a-of the first power relay 131 is used as a negative power input terminal of the power relay module 13, a control terminal S of the first power relay 131 is used as a control terminal of the power relay module 13, an input terminal 15 of the first power relay 131 is used as an input terminal of the power relay module 13, and an output terminal 18 of the first power relay 131 is used as an output terminal of the power relay 13 module.

As can be seen from fig. 1, in the embodiment of the present utility model, the positive power input terminal a+ of the first power relay 131 is electrically connected with the live wire terminal L of the external plug and the input terminal 15 of the first power relay module 131, the negative power input terminal of the first power relay 131 is electrically connected with the neutral wire N of the external plug 1, the output terminal 18 of the first power relay 131 is electrically connected with the positive power input terminal of the electronic device 4, the positive power input terminal of the customs display screen 2, the positive power input terminal of the industrial personal computer 3 and the first input terminal of the AC-DC module, and the control terminal S of the first power relay 131 is electrically connected with the normally open terminal of the self-locking dual control switch 11.

IN the embodiment of the utility model, when the self-locking double-control switch 11 is pressed, the first public end C1 of the self-locking double-control switch 11 is IN contact with the first normal open end NO1, and as the first public end C1 of the self-locking double-control switch 11 is electrically connected with the live wire end L of the external plug 1, the control end S of the first power relay 13 receives an electric signal, and the input end 15 and the output end 18 of the first power relay 13 are conducted, so that the electronic equipment 4, the customs display screen 2 and the industrial personal computer 3 are powered through the first power relay 131, and the first input end IN1 of the AC-DC module 14 converts the received alternating current into direct current of 5V to power the first 5V relay;

When the self-locking double-control switch 11 is pressed, the second common end C2 of the self-locking double-control switch 11 is contacted with the second normal open end NO2, and direct current output by the AC-DC module 14 is input to the trigger signal positive end in+ of the first 5V relay 12 through the second common end C2 of the self-locking double-control switch 11 and the second normal open end NO2, and the common end COM of the first 5V relay is contacted with the normal open end NO, so that two switch ends of the industrial personal computer are short-circuited, and the industrial personal computer 3 is controlled to start.

When the self-locking type double-control switch 11 is pressed again, the self-locking type double-control switch 11 is sprung, the first public end C1 and the first normal end NO1 of the self-locking type double-control switch 11 are disconnected, the control end of the first power relay 131 stops receiving electric signals, the input end 15 and the output end 18 of the first power relay 131 are disconnected, power supply to the electronic equipment 4, the customs display screen 2 and the industrial personal computer 3 is stopped, meanwhile, the AC-DC module 14 stops outputting direct current, the triggering signal of the triggering signal positive end IN+ of the first 5V relay 12 disappears, namely, the 5V high-level signal disappears, the public end COM and the normal end of the first 5V relay are disconnected and contacted again, and therefore two switch ends of the industrial personal computer are short-circuited, and the industrial personal computer 3 is controlled to be shut down.

As shown in fig. 3, a schematic structural diagram of another power on/off control circuit provided in this embodiment of the present utility model is shown in fig. 3, where the first power relay 131 is a relay with two-way output, the first input terminal 15 of the first power relay 131 is electrically connected to the second output terminal 25 of the first power relay 131 and the live wire terminal L of the external plug 1, the first output terminal 18 of the first power relay 131 is electrically connected to the power supply positive input terminal of the industrial personal computer 3, the power supply positive input terminal of the customs display screen 2, the second output terminal 28 of the first power relay 131 and the first input terminal of the AC-DC module 14, and the power supply positive input terminal of the electronic device 4.

As shown in fig. 4, a second output end 28 of the first power relay 131 is electrically connected to a positive input end of the electronic device 4 through the bottom power strip 6.

As shown in fig. 5, a schematic structural diagram of another power on/off control circuit provided in an embodiment of the present utility model, as can be seen from fig. 4, the power relay module 13 includes a first power relay 131, where the first power relay 131 is a relay with two-way output;

The first input end 15 of the first power relay 131 and the second input end 25 of the first power relay 131 are electrically connected with the live wire end L of the external plug 1;

The first output 18 of the first power relay 131 is electrically connected to the positive input of the AC-DC module 14;

The second output terminal 28 of the first power relay 131 is electrically connected with the power supply positive input terminal of the electronic device 4, the power supply positive input terminal of the customs display screen 2 and the power supply positive input terminal of the industrial personal computer 3.

As shown in fig. 6, a second output end 28 of the first power relay 131 is electrically connected to a power supply positive input end of the electronic device 4 through the bottom power strip 6.

As shown in fig. 7, a schematic structural diagram of another power on/off control circuit provided in an embodiment of the present utility model, as can be seen from fig. 5, the power relay module 13 includes a first power relay 131, where the first power relay 131 is a relay with two-way output;

the first input end 15 of the first power relay 131 and the second input end 25 of the first power relay 131 are electrically connected with the live wire end L of the external plug 11;

The first output 18 of the first power relay 131 is connected to the positive power supply input of the electronic device 4;

The second output end 28 of the first power relay 131 is electrically connected with the power supply positive input end of the AC-DC module 14, the power supply positive input end of the customs display screen 2 and the power supply positive input end of the industrial personal computer 3.

As shown in fig. 8, a first output terminal 18 of a first power relay 131 is electrically connected to a power supply positive input terminal of the electronic device 4 through the bottom strip 6.

As shown in fig. 9, in the schematic structural diagram of another power on/off control circuit according to the embodiment of the present utility model, a first output end 18 of a first power relay 131 is electrically connected to a bottom socket 6, an electronic device 4, a customs display screen 2 and an industrial personal computer 3 are all electrically connected to the bottom socket 6, and a second output end 28 of the first power relay 131 is electrically connected to a positive input end of an AC-DC module.

According to the embodiment of the utility model, the electronic equipment 4, the customs display screen 2 and the industrial personal computer 3 are electrically connected with the bottom power strip, so that one output socket can be reduced. The output socket is electrically connected to the customs display 2 and the industrial personal computer 3, and is connected to the output terminal of the first power relay.

The first power supply relay 131 in the on-off control circuit shown in fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8 and fig. 9 is a relay with two-way output, and the working process of the whole control circuit can refer to the above description of the on-off control circuit in fig. 1, and the repetition is omitted.

The above description is made of the power relay module including one power relay, and the following description is made of the power relay module including two power relays.

As shown in fig. 10, a power relay module 13 includes a first power relay 131 and a second power relay 132, where the first power relay 131 is a relay with single-path output, and the second power relay 132 is a relay with single-path output;

The input end 15 of the first power relay 131 and the input end 15 of the second power relay 132 are electrically connected with a live wire end L of an external plug;

the output end 18 of the first power relay 131 is electrically connected with the power supply positive input end of the display screen under customs, the power supply positive input end of the industrial personal computer and the positive input end of the alternating current-to-direct current module;

The output 18 of the second power relay 132 is electrically connected to the power supply positive input of the electronic device.

As shown in fig. 11, in an embodiment of the present utility model, the output end 18 of the second power relay 132 is electrically connected to the electronic device through the bottom power strip.

As shown in fig. 12, a power relay module 13 includes a first power relay 131 and a second power relay 132, where the first power relay 131 is a relay with two-way output, and the second power relay 132 is a relay with one-way output;

The positive power input end A+ of the first power relay 131, the first input end 18 of the first power relay 131, the second input end 28 of the first power relay 131 and the positive power input end A+ of the second power relay 132 are all electrically connected with the live wire end L of the external plug 11;

The power negative input end A-

The first output end of the first power relay 131 is electrically connected with the power supply positive input end of the customs lower display screen 2 and the power supply positive input end of the industrial personal computer 3, and the second output end 28 of the first power relay 131 is electrically connected with the positive input end of the AC-DC module 14;

the output 18 of the second power relay 132 is electrically connected to the power supply positive input of the electronic device 4.

As shown in fig. 13, in an embodiment of the present utility model, the output end 18 of the second power relay 132 is electrically connected to the electronic device through the bottom power strip.

Referring to fig. 12 and 13, when the self-locking type double control switch is pressed, a first common terminal C1 of the self-locking type double control switch is in contact with a first normal terminal NO1 of the self-locking type double control switch, a control terminal S of the second power relay 132 receives an electrical signal, an input terminal 15 of the second power relay 132 is conducted with an output terminal 18 of the second power relay 132, and an output terminal of the second power relay 132 supplies electrical power to the electronic device to supply power to the electronic device.

As shown in fig. 14, which is a schematic diagram of a structure of another power on/off control circuit according to an embodiment of the present utility model, as can be seen from fig. 14, a first output terminal 18 of a first power relay 131 is electrically connected to a power supply positive input terminal of an industrial personal computer and a power supply positive input terminal of a display screen under customs, a second output terminal 28 of the first power relay 131 is electrically connected to a power supply positive input terminal of an electronic device, and an output terminal 18 of a second power relay 132 is electrically connected to a positive input terminal of an AC-DC module.

Fig. 15 is a schematic structural diagram of another power on/off control circuit according to an embodiment of the present utility model, and in fig. 15, a second output terminal 28 of the first power relay is electrically connected to an electronic device through a bottom power strip.

As shown in fig. 16, which is a schematic diagram of a structure of another power on/off control circuit according to an embodiment of the present utility model, as can be seen from fig. 16, a first output terminal 18 of a first power relay 131 is electrically connected to a positive input terminal of an AC-DC module, a second output terminal 28 of the first power relay 131 is electrically connected to a power supply positive input terminal of an electronic device, and an output terminal 18 of the second power relay 132 is electrically connected to a power supply positive input terminal of an industrial personal computer and a power supply positive input terminal of a display screen under customs.

As shown in fig. 17, a second output terminal 28 of the first power relay is electrically connected to the electronic device through the bottom power strip.

The second power relay in the embodiment of the utility model can also be a delay relay, and the second power relay is set to be in a mode of delayed power-off, such as delayed for 2s, so as to ensure that some devices finish storage buffering.

In the embodiment of the utility model, if the second power relay is not a delay relay, the self-locking double-control switch can be pressed down again, and after the self-locking double-control switch is sprung up, the equipment powered by the second power relay is powered off immediately, so that no power-off delay exists; if the second power relay is a delay relay, after the self-locking double-control switch is pressed again and bounces, the equipment powered by the second power relay is delayed for 2s to be powered off, and the power-off delay of the second power relay can be smaller than that of the first power relay.

IN an embodiment, the on-off control circuit provided by the embodiment of the utility model may further include a second 5V relay 15, as shown IN fig. 18, a positive power input end dc+ of the second 5V relay 15 is electrically connected to a second normally-closed end NO2 of the self-locking double-control switch 11, a negative power input end DC-of the second 5V relay 15 is electrically connected to a trigger signal negative end IN-of the second 5V relay 15 and a ground end GND of the self-locking double-control switch 11, a normally-closed end NC of the second 5V relay 15 is electrically connected to an LED driving end of the self-locking double-control switch 11, and a common end COM of the second 5V relay 15 is electrically connected to a positive power input end dc+ of the first 5V relay 12.

The second 5V relay in the embodiment of the utility model is used for controlling the indicator lamp in the self-locking type double-control switch, and a user can judge whether the current state of the customs inspection desk equipment is in the shutdown process or in the normal working state through the indicator lamp in the self-locking type double-control switch.

In order to facilitate understanding, the present utility model will be described in detail based on a schematic configuration of the power on/off control circuit shown in fig. 18.

The on-off key of the utility model selects a self-locking double-control switch with an indicator lamp, the self-locking double-control switch is pressed down, the public end C and the normally open end NO of the independent two-way switch are closed, and the public end C and the normally closed end NC are disconnected; and then pressing the self-locking double-control switch, rebounding the key, opening the public end C and the normally open end NO of the two-way switch, and closing the public end C and the normally closed end NC, wherein the first public end C1 and the first normally open end NO1 of the self-locking double-control switch are used for controlling the first power relay and the second power relay, and the second public end C2, the second normally open end NO2 and the second normally closed end NC2 of the self-locking double-control switch are used for controlling the first 5V relay and the second 5V relay.

In a specific implementation, the first power relay may be a two-way output delay relay, where the power positive input end a+ of the first power relay is connected to the live wire end L of the external plug, that is, the L line (live wire) of the input power, the power negative input end a-of the first power relay is connected to the zero line end N of the external plug, that is, the N line (zero line) of the input power, the power positive input end a+ of the first power relay is simultaneously connected to the first common end C1 of the first path of the self-locking double-control switch and the first input end 15 of the first power relay, the control end S of the first power relay is connected to the first normal start end NO1 of the first path of the self-locking double-control switch, and the first output end 18 of the first power relay is connected to the power L line of the industrial personal computer and the display screen under customs, that is the power positive input end, and the N line of the power negative input end a-of the first power relay is simultaneously connected to the industrial personal computer and the power N line of the display screen under customs.

It should be noted that, when the power is off, the power is off for 2m in time delay of the display screen under the industrial personal computer and the customs, the power off state of the industrial personal computer is mainly considered to be visually seen, the abnormal processing operation is convenient, and if the subsequent equipment needing to be off in time delay exists, the problem can be solved by adopting a mode of increasing the number of jacks or externally connecting the power strip. In addition, 2m in the embodiment of the present utility model is only illustrated, and the delay time may be changed according to actual needs in the implementation.

When the self-locking double-control switch is pressed to be closed, the output end 18 of the first power relay is connected with the input end 15 of the first power relay, so that power is supplied to the industrial personal computer and the customs display screen. The second input end 25 of the first power relay is connected with the positive power input end A+ of the first power relay, the second output end 28 of the first power relay is connected with one input of the AC-DC module, the other input of the AC-DC module is connected with the negative power input end A2 of the first power relay and the N line of the input power supply, and the AC-DC module outputs 5V voltage to supply power for the first 5V relay, the second 5V relay and the power supply of the indication lamp of the self-locking double-control switch. When the self-locking double-control switch is pressed down and sprung again, the first power relay controls the first output end 18 and the first input end 15 to be disconnected with 2m time delay, and controls the second output end 28 and the second input end 25 to be disconnected with 2m time delay, both the display screen under customs and the industrial personal computer are powered off with 2m time delay, and the AC-DC module is powered off with 2m time delay.

The positive power input end A+ of the second power relay is connected with an L line (live line) of an input power supply, the negative power input end A-of the second power relay is connected with an N line (zero line) of the input power supply, the positive power input end A+ of the second power relay is connected with a first common end C1 of a first path of the self-locking double-control switch, the control end S of the second power relay is connected with a first normally open end NO1 of the first path of the self-locking double-control switch, the input end 15 end of the second power relay is connected with the positive power input end A+ of the second power relay and the L line of the input power supply, and the output end 18 of the second power relay and the negative power input end A2 of the second power relay are connected with the bottom socket. When the self-locking double-control switch is pressed to be closed, the output end 18 of the second power relay is connected with the input end 15 of the second power relay, so that power can be supplied to a plurality of devices through the bottom power strip; when the self-locking double-control switch is pressed down again to bounce, the output end 18 of the second power relay is disconnected from the output end 15 of the second power relay, the bottom power strip is powered off, and power supply for equipment electrically connected with the bottom power strip is stopped.

The first 5V relay is provided with a POWER supply by an AC-DC module capable of outputting 5V voltage, the first 5V relay uses a mode of triggering by level conversion, when the self-locking double-control switch is pressed, the second public end C2 and the second normal open end NO2 of the first 5V relay are connected, the positive input end IN+ of a triggering signal of the first 5V relay is 5V high level, the public end COM of the first 5V relay and the normal open end NO of the first 5V relay generate a closing signal to control the POWER key of the industrial personal computer, and the industrial personal computer is started; when the self-locking double-control switch is pressed down again to bounce, the second public end C2 and the second normal open end NO2 of the self-locking double-control switch are disconnected, the positive input end IN+ of the trigger signal of the first 5V relay is low level, the public end COM of the first 5V relay and the normal open end NO of the first 5V relay generate a closing signal again, the POWER key of the industrial personal computer is controlled, and the industrial personal computer is powered off.

In the implementation, the time for generating the closing signal by the public end COM of the first 5V relay and the normally open end NO of the first 5V relay can be set, so that the phenomenon that the industrial personal computer cannot be opened or closed as required due to too short user key time is prevented, and the reliability of the equipment is improved.

The second 5V relay is used for controlling the pilot lamp of the double-control switch of locking-type, the negative pole of the pilot lamp is connected with GND of the AC-DC module, the positive pole of the pilot lamp is connected with the normally closed end NC of the second 5V relay, and the public end COM end of the second 5V relay is connected with 5V of the AC-DC module. When the self-locking double-control switch is pressed down, the second public end C2 of the second 5V relay and the second normally-closed end NC2 of the second 5V relay are disconnected, the input power supply of the second 5V relay is disconnected, at the moment, the public end COM and the normally-closed end NC of the second 5V relay are connected, and an indicator lamp of the self-locking double-control switch is normally on; when the self-locking double-control switch is pressed down and bounced again, a second public end C2 of the self-locking double-control switch and a second normally-closed end NC2 of the self-locking double-control switch are connected, a second 5V relay is provided by an input power supply 5V, at the moment, the working mode of the second 5V relay is set to be that the public end COM and the normally-closed end NC are connected for 1s, then the second 5V relay is disconnected for 1s, the circulation is performed in such a way, a key indicator lamp of the double-control switch shines, the indicator lamp of the double-control switch is prompted to be in a shutdown process, after the indicator lamp of the double-control switch shines to be delayed for 2m, the power supply is disconnected, the indicator lamp of the self-locking double-control switch is completely extinguished, and the shutdown of the indicator device is completed.

After the customs inspection desk equipment is shut down, the self-locking double-control switch can be normally pressed to turn on the equipment.

In one embodiment, in the process of shutdown delay of 2m (minutes), the power supply of the bottom power strip is disconnected, after the industrial computer is completed, the power supply of the display screen under the customs and the industrial computer is not disconnected, if the user presses the self-locking double-control switch again, the first power relay supplies power to the bottom power strip again, the first power relay stops the shutdown delay reciprocal, and simultaneously, the power supply for the display screen under the customs and the industrial computer is started normally, and the industrial computer is started normally.

According to the embodiment of the utility model, the one-key on-off of the customs inspection desk equipment can be realized through the self-locking double-control switch, the self-locking double-control switch is a double-way self-locking switch key, and when the key is pressed, the relay control module can supply power for the bottom power strip, the customs lower display screen and the industrial personal computer and control the industrial personal computer to start; when the power-off is performed, the key is required to be pressed down again to bounce the key, at the moment, the relay control module stops supplying power to the bottom power strip, the power-off of the industrial personal computer is controlled, and the power-off of the industrial personal computer and the display screen under customs is performed after the delay of 2m, so that the power-off is performed after the power-off of the industrial personal computer is completed. And the indicator lights on the on-off key and the ground scale display screen zero clearing key flash during the time delay power-off period to prompt the user that the system is being shut down.

In specific implementation, the first power relay, the second power relay, the first 5V relay, the second 5V relay and the AC-DC module can be packaged together and placed in the bottom equipment area of customs inspection desk equipment, and the self-locking double-control switch and the ground scale display screen zero clearing key can be positioned below a user operation keyboard to prevent misoperation in the user operation process. The self-locking double-control switch, the indicator light POWER supply of the ground scale display screen zero clearing key and the POWER key of the industrial personal computer are connected with the relay module through connectors; the relay module is connected with the server, the bottom power strip, the industrial personal computer and the customs display screen through the power jack.

The indicator lights of the display screen zero clearing keys of the floor scales can be connected with the indicator lights of the self-locking double-control switch, so that the indicator lights of the display screen zero clearing keys of the two floor scales and the indicator lights of the self-locking double-control switch flash within 2m of shutdown delay, and a user is prompted to check that the station equipment is in the shutdown process, and the user is prevented from touching the self-locking double-control switch again.

As shown in fig. 19, a schematic structural diagram of a customs inspection desk device provided by the embodiment of the present utility model is shown in fig. 19, where the customs inspection desk device includes an external plug, a self-locking dual-control switch, a relay control module, a server, a bottom socket, an industrial personal computer, a clear key, a floor scale and a display screen, a printer, a switch, a hard disk video recorder, a passenger display screen, an on-customs display screen, a passport scanner, an under-customs display screen, a top power socket, an environmental light supplementing lamp, a high-definition camera, a surveillance camera, an adapter 1, an adapter 2, an adapter 3, an adapter 4, an adapter 5, and an adapter 6;

The external plug is used for being connected with 220V alternating current, the relay control module can supply power for the bottom power strip, the display screen under customs and the industrial personal computer, and also can control the industrial personal computer to be started or stopped, and meanwhile, the indication lamp of the self-locking double-control switch can display the state of the customs inspection desk.

The relay control module provides power for all devices and can be directly connected with the server, the industrial personal computer and the customs display screen for power supply; the power strip is connected with the bottom to supply power for a passenger display screen, a customs upper display screen, a passport scanner, a hard disk video recorder, an exchanger, a printer and a floor scale, and is further connected with a ceiling of customs inspection desk equipment to supply power for 4 high-definition cameras, monitoring cameras and environment light supplementing lamps. And meanwhile, the power supply bottom line is led out for grounding the shell of the customs inspection desk equipment.

The embodiment of the utility model is used for controlling the on-off of the customs inspection desk equipment, and can realize the time sequence control of one-key on-off, power-on and power-off of the equipment, the on-off state reminding and the processing of abnormal operation by using the self-locking double-control switch matched with the relay control module, so that the on-off of the customs inspection desk equipment has real-time performance, reliability and controllability.

It should be noted that, the power relay provided in the embodiment of the present utility model may be more than two in practical application, so as to realize sequential power supply, sequential power failure, and sequential power on/off of different devices,

Based on the same conception, the embodiment of the utility model also provides customs inspection desk equipment which comprises an external plug, a customs display screen, an industrial personal computer, electronic equipment and any on-off control circuit, wherein the on-off control circuit comprises a self-locking double-control switch, a first 5V relay, a power relay module and an alternating current-to-direct current module;

The live wire end of the external plug is electrically connected with the first public end of the self-locking double-control switch and the power positive input end of the power relay module, and the zero wire end of the external plug is electrically connected with the power negative input end of the relay module, the power negative input end of the electronic equipment, the power negative input end of the customs display screen and the power negative input end of the industrial personal computer;

The power supply positive input end of the electronic equipment, the power supply positive input end of the display screen under customs and the power supply positive input end of the industrial personal computer are electrically connected with the output end of the relay module.

In one embodiment, the customs inspection desk apparatus further comprises a bottom strip;

the bottom power strip is connected between the electronic device and the relay module.

In one embodiment, the customs inspection station further comprises a server;

the power supply positive input end of the server is electrically connected with the live wire end of the external plug, and the power supply negative input end of the server is electrically connected with the zero line end of the external plug.

In the implementation, the server belongs to equipment working for a long time, and the server is in a working state as long as the environment is electrified, so that the system directly supplies power to the server by an input power supply, and the server is set to be in a state of being automatically started when electrified.

The customs inspection desk device generally comprises a passenger display screen, an upper customs display screen and a lower customs display screen, and the embodiment of the utility model connects the lower customs display screen and the industrial personal computer to the same output end of the relay, controls the delay power-off of the lower customs display screen, and can enable customs personnel to check the power-off state of the industrial personal computer through the lower customs display screen.

For safety, the inspection desk device housing needs to be grounded, which is accomplished by connecting a ground wire to which a power supply is connected.

In the implementation, the equipment connected with the bottom or top power strip is also adjusted according to the actual requirements of the project; under the condition of space allowance, in order to simplify the design, a plurality of power sockets can be installed and fixed on the relay module, so that the power strip at the bottom can be omitted; the relay module can also be added with a power relay to respectively control the power-on and power-off of different devices, so that a plurality of devices can be powered on and powered off in sequence, and the impact of starting the plurality of devices on a power grid at the same time is avoided.

The embodiment of the utility model can realize the power supply control of the customs inspection desk equipment, realize one-key on-off and facilitate the operation of a user. When the power-on system is started, a user can control the power-on of the multiple devices and the power-on of the industrial personal computer simultaneously through one key, and when the power-off system is shut down, the power-off of the industrial personal computer and the power-off of the devices can be realized through the same key, so that the normal operation of the hardware system of the inspection desk is ensured.

As shown in fig. 20, a flow chart for controlling a customs inspection desk device according to an embodiment of the present utility model specifically includes the following steps:

S1901, the environment supplies power for customs inspection desk equipment, and a server is powered on and self-started;

S1902, customs inspection desk equipment is in a standby state;

S1903, judging whether a self-locking double-control switch is pressed, if yes, executing S1904, otherwise returning to S1902;

S1904, a first power supply relay supplies power to the industrial personal computer and a display screen under customs, a second power supply relay supplies power to other equipment through a bottom power strip, the first 5V relay controls the industrial personal computer to start, and the second 5V relay controls an indicator lamp of the self-locking double-control switch to be normally on;

s1905, customs inspection desk equipment is in a normal working state;

S1906, judging whether the user presses the self-locking double-control switch again, wherein the self-locking double-control switch is in a bouncing state, if yes, executing S1907, otherwise returning to S1905;

S1907, a second power relay cuts off the power supply of the bottom power strip, so that power supply to other equipment is stopped, the first power relay starts 2m countdown for the industrial personal computer and a display screen under customs, the first 5V relay controls the industrial personal computer to be powered off, and the second 5V relay controls an indicator lamp of the self-locking double-control switch to flash;

s1908, judging whether the delayed shutdown 2m is completed, if yes, executing S1909, otherwise, executing S1911;

S1909, judging whether the self-locking double-control switch is pressed again, if yes, executing S1910, otherwise executing S1908;

S1910, the delay power-off of the first power supply relay is canceled, the second power supply relay supplies power to other equipment, the first 5V relay controls the industrial personal computer to start, and the second 5V relay controls the indicator lamp of the self-locking double-control switch to be normally on;

S1911, the industrial personal computer and the display screen are powered off.

The customs inspection desk equipment provided by the embodiment of the utility model has the function of delayed power-off, so that the equipment can be powered off according to different time sequences, the normal shutdown of an industrial personal computer is ensured, and the shutdown state of the industrial personal computer can be observed through a lower display screen; the method has the advantages that effective prompt is carried out when the power-on/off state is carried out, besides visual feelings such as power-off of the lighting equipment, a user can know the state of the inspection desk equipment in multiple directions by observing the state of the display screen, the pressing or bouncing state of the key indicator lamp and the normally-on, flashing or non-lighting state of the key indicator lamp; in addition, the customs inspection desk device also has an abnormality processing function, and when the user turns on the abnormal operation of the device in the shutdown process, the system can be normally started.

Various modifications and alterations of this utility model may be made by those skilled in the art without departing from the spirit and scope of this utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The utility model provides a switch control circuit which characterized in that is applied to customs inspection desk equipment, customs inspection desk equipment includes external plug, customs display screen, industrial computer and electronic equipment, switch control circuit includes: the self-locking double-control switch, a first 5V relay, a power relay module and an alternating current-to-direct current module;

The first public end of the self-locking double-control switch is electrically connected with the live wire end of the external plug, the first normal end of the self-locking double-control switch is electrically connected with the control end of the power relay module, the second public end of the self-locking double-control switch is electrically connected with the positive power input end of the first 5V relay and the first output end of the alternating current-to-direct current module, the second normal end of the self-locking double-control switch is electrically connected with the positive trigger signal end of the first 5V relay, and the grounding end of the self-locking double-control switch is electrically connected with the negative power input end of the first 5V relay, the negative trigger signal end of the first 5V relay and the second output end of the alternating current-to-direct current module;

the public end of the first 5V relay is electrically connected with a first on-off end of the industrial personal computer, and the normal end of the first 5V relay is electrically connected with a second on-off end of the industrial personal computer;

The power relay module is characterized in that a power positive input end of the power relay module is electrically connected with an input end of the power relay module and a live wire end of the external plug, a power negative input end of the power relay module is electrically connected with a negative input end of the alternating current-to-direct current module, a zero line end of the external plug, a power negative input end of the electronic equipment, a power negative input end of a display screen under a customs and a power negative input end of an industrial personal computer, and an output end of the power relay module is electrically connected with a positive input end of the alternating current-to-direct current module, a power positive input end of the electronic equipment, a power positive input end of the display screen under the customs and a power positive input end of the industrial personal computer.

2. The control circuit of claim 1, wherein the power relay module comprises a first power relay that is a single-pass output relay;

The power supply positive input end of the first power supply relay is used as the power supply positive input end of the power supply relay module, the power supply negative input end of the first power supply relay is used as the power supply negative input end of the power supply relay module, the input end of the first power supply relay is used as the input end of the power supply relay module, and the output end of the first power supply relay is used as the output end of the power supply relay module.

3. The control circuit of claim 1, wherein the power relay module comprises a first power relay that is a two-way output relay;

the first input end of the first power relay and the second input end of the first power relay are electrically connected with the live wire end of the external plug;

A first output end of the first power relay and a positive input end of the alternating current-to-direct current module;

The second output end of the first power relay is electrically connected with the power supply positive input end of the electronic equipment, the power supply positive input end of the customs display screen and the power supply positive input end of the industrial personal computer.

4. The control circuit of claim 1, wherein the power relay module further comprises a first power relay and a second power relay, the first power relay being a single-pass output relay and the second power relay being a single-pass output relay;

The input end of the first power relay and the input end of the second power relay are electrically connected with the live wire end of the external plug;

The output end of the first power relay is electrically connected with the power supply positive input end of the customs display screen, the power supply positive input end of the industrial personal computer and the positive input end of the alternating current-to-direct current module;

And the output end of the second power relay is electrically connected with the power supply positive input end of the electronic equipment.

5. The control circuit of claim 1, wherein the power relay module further comprises a first power relay and a second power relay, the first power relay being a two-way output relay and the second power relay being a one-way output relay;

The first input end of the first power relay, the second input end of the first power relay and the input end of the second power relay are electrically connected with the live wire end of the external plug;

The first output end of the first power relay is electrically connected with the power supply positive input end of the customs display screen and the power supply positive input end of the industrial personal computer, and the second output end of the first power relay is electrically connected with the positive input end of the alternating current-to-direct current module;

And the output end of the second power relay is electrically connected with the power supply positive input end of the electronic equipment.

6. The control circuit of claim 5, further comprising a second 5V relay;

The power positive input end of the second 5V relay is electrically connected with the second normally-closed end of the self-locking double-control switch, the power negative input end of the second 5V relay is electrically connected with the trigger signal negative end of the second 5V relay and the grounding end of the self-locking double-control switch, the normally-closed end of the second 5V relay is electrically connected with the LED driving end of the self-locking double-control switch, and the public end of the second 5V relay is electrically connected with the power positive input end of the first 5V relay.

7. A control circuit as claimed in any one of claims 4 to 6, wherein the first power relay is a time delay relay.

8. The customs inspection desk device is characterized by comprising an external plug, a customs display screen, an industrial personal computer, electronic equipment and the on-off control circuit according to any one of claims 1-7, wherein the on-off control circuit comprises a self-locking double-control switch, a first 5V relay, a power relay module and an alternating current-to-direct current module;

The live wire end of the external plug is electrically connected with the first public end of the self-locking double-control switch and the power positive input end of the power relay module, and the zero wire end of the external plug is electrically connected with the power negative input end of the relay module, the power negative input end of the electronic equipment, the power negative input end of the customs display screen and the power negative input end of the industrial personal computer;

the power supply positive input end of the electronic equipment, the power supply positive input end of the display screen under the customs and the power supply positive input end of the industrial personal computer are electrically connected with the output end of the relay module.

9. The apparatus of claim 8, further comprising a bottom strip;

the bottom power strip is connected between the electronic equipment and the relay module.

10. The apparatus of claim 8 or 9, further comprising a server;

The power supply positive input end of the server is electrically connected with the live wire end of the external plug, and the power supply negative input end of the server is electrically connected with the zero wire end of the external plug.