CN210804330U - Alarm keyboard - Google Patents

Abstract

The utility model discloses an alarm keyboard relates to automatic control technical field, including keyboard subassembly, metal casing, speaker, warning light, signal shield cover, control circuit, keyboard subassembly and control circuit arrange metal casing in and form a shielding body, play absorbed energy, reflection energy and the effect of offsetting the energy to outside interference electromagnetic wave and inside electromagnetic wave from wire, cable, components and parts, circuit or system to reach the function that weakens electromagnetic wave interference. The utility model discloses an alarm keyboard has good audio output function, and not only commonality, practicality are good, and the reliability is high, and low in production cost can realize mass production moreover, is applicable to mainstream control system human-computer interface's input/output, audible-visual alarm demand.

Description

Alarm keyboard

Technical Field

The utility model relates to an automatic control technical field, more specifically indicate an alarm keyboard.

Background

The alarm keyboard is an input and output device connected with an automatic control system and an operation station, and is a man-machine device which is responsible for sending alarm information (such as fault information of DCS/PLC hardware and abnormal information of production data over-range, loss, fault and the like) in an acousto-optic mode to remind an operator of making judgment and operation and provide the operator for production data control. Domestic manufacturers often use multimedia sound boxes and common keyboards to replace alarm keyboards to achieve the alarm function, but the reliability is not high. The general import control system has the alarm keyboard customized by manufacturers, and has the advantages that the reliability of the special customized function is higher, but the function is very limited, the price is not high, and the system can only be specially used by a special machine.

Patent CN205050084U discloses a highway toll collection keyboard with acousto-optic prompt, which utilizes RS232 communication interface of host, unidirectional connection embedded control unit to connect power amplifier and driving circuit to realize acousto-optic function. Patent CN201210498423 discloses a novel keyboard with sound, and the computer sound is directly embedded into a computer keyboard, so that the keyboard is convenient to carry, and is closer to human ears, and the sound effect is more excellent. Patent CN200520058750 discloses a multimedia keyboard with a sound device, wherein an installation space is formed on the keyboard, and a small speaker unit and a small power amplifier are installed in the installation space, thereby facilitating the connection of sound circuits and greatly reducing the occupied space of the sound device. However, the above patents have the disadvantages of complicated structure, communication protocol support, limited application range, etc.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

There is the structure complicacy, needs communication protocol to support, defect problems such as range of application limitation to above-mentioned prior art, the utility model provides an alarm keyboard comprises keyboard subassembly, control circuit, metal casing, signal shield cover, has good audio output function, and not only commonality, practicality are good, and the reliability is high, and low in production cost can realize mass production moreover.

(II) technical scheme

An alarm keyboard comprises a keyboard component 1, a loudspeaker 3 and a warning lamp 4, wherein the keyboard component 1, the loudspeaker 3 and the warning lamp 4 are integrated into a whole, and the alarm keyboard further comprises a metal shell 2, a signal shielding cover 5 and a control circuit 6; the keyboard assembly 1, the loudspeaker 3 and the warning lamp 4 are arranged on the front side of the metal shell 2, the signal shielding cover 5 is arranged on the back side of the metal shell 2, and the control circuit 6 is arranged between the metal shell 2 and the signal shielding cover 5; the control circuit 6 is electrically connected with the keyboard assembly 1, the loudspeaker 3 and the warning lamp 4.

According to an embodiment of the present invention, the metal shell 2 is made of stainless steel SUS304, and the protection grade is IP 45.

According to an embodiment of the present invention, the control circuit 6 includes a controller, a USB interface, a keyboard module, an audio input module, an audio output module, a level indicator, and an audio-visual module; the USB interface, the keyboard module, the audio input module, the audio output module and the level indicator are peripheral circuits of the controller and are respectively connected with the controller; the level indicator is connected with the acousto-optic module and used for driving the acousto-optic module.

According to the utility model discloses an embodiment, control circuit includes the audio interface, the audio interface is 3.5mm general interface.

According to an embodiment of the invention, the controller comprises an audio chip LN 4863.

According to an embodiment of the present invention, the level indicator includes a chip KA 2284.

(III) advantageous effects

The alarm keyboard of the utility model is adopted, which comprises a keyboard component, a control circuit, a metal shell and a signal shielding cover, wherein the keyboard component and the control circuit are arranged on the metal shell to form a shielding body, and the keyboard component and the control circuit play the roles of absorbing energy, reflecting energy and offsetting energy for external interference electromagnetic waves and internal electromagnetic waves from wires, cables, components, circuits or systems and the like, thereby achieving the function of weakening the interference of the electromagnetic waves; the utility model discloses have good audio output function, not only commonality, practicality are good, and the reliability is high, and low in production cost can realize mass production moreover, is applicable to mainstream control system human-computer interface's input-output, audible-visual alarm demand.

Drawings

In the present invention, like reference numerals denote like features throughout, wherein:

FIG. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a functional block diagram of a control circuit;

FIG. 4 is a schematic diagram of a controller circuit;

fig. 5 is a schematic diagram of a level indicator circuit.

Description of reference numerals:

1. a keyboard assembly; 2. a metal housing; 3. a speaker; 4. a warning light; 5. a signal shield; 6. a control circuit.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, an alarm keyboard comprises a keyboard assembly 1, a metal casing 2, a loudspeaker 3, a warning lamp 4, a signal shielding case 5 and a control circuit 6.

The keyboard assembly 1, the speaker 3 and the warning lamp 4 are integrated. The keyboard assembly 1, the loudspeaker 3 and the warning lamp 4 are arranged on the front side of the metal shell 2, the signal shielding case 5 is arranged on the back side of the metal shell 2, and the control circuit 6 is arranged between the metal shell 2 and the signal shielding case 5; the control circuit 6 is electrically connected to the keyboard assembly 1, the speaker 3, and the warning lamp 4.

The metal shell 2 is made of stainless steel SUS304 with protection grade IP 45. The alarm keyboard is provided with a USB interface and can be used in a plug-and-play mode, and the audio interface adopts a 3.5mm universal interface. The alarm keyboard can integrate the sound and light alarm function on the basis of realizing the main functions of a computer keyboard. When receiving the audio signal of the control system, the auxiliary sound box gives out an alarm sound and the lamp gives out red flashing; and automatically silencing after the alarm information is confirmed.

With reference to fig. 3, the control circuit includes a controller, a USB interface, a keyboard module, an audio input module, an audio output module, a level indicator, and an audio-visual module; the USB interface, the keyboard module, the audio input module, the audio output module and the level indicator are peripheral circuits of the controller and are respectively connected with the controller; the level indicator is connected with the acousto-optic module and used for driving the acousto-optic module. With reference to fig. 4, the controller comprises an audio chip LN 4863; in connection with fig. 5, the level indicator comprises a chip KA 2284.

An alarm keyboard adopts a USB interface and is plug-and-play, and an audio interface adopts a 3.5mm universal interface; the main external material adopts stainless steel SUS304, protection grade IP 45; the sound and light alarm function is integrated on the basis of realizing the main functions of a computer keyboard; when receiving the audio signal of the control system, the sound box sends out an alarm sound and the lamp sends out red flashing, and the alarm information is automatically silenced after being confirmed.

In conclusion, the technical scheme of the utility model is adopted, alarm keyboard comprises keyboard subassembly, control circuit, metal casing, signal shield cover, and keyboard subassembly and control circuit arrange metal casing in and form a shielding body, play the effect of absorbed energy, reflection energy and offset energy to the interference electromagnetic wave that comes from outsides such as wire, cable, components and parts, circuit or system and inside electromagnetic wave to reach the function that weakens electromagnetic wave interference; the utility model discloses have good audio output function, not only commonality, practicality are good, and the reliability is high, and low in production cost can realize mass production moreover, is applicable to mainstream control system human-computer interface's input-output, audible-visual alarm demand.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. An alarm keyboard comprises a keyboard component (1), a loudspeaker (3) and a warning lamp (4), and is characterized in that: the keyboard assembly (1), the loudspeaker (3) and the warning lamp (4) are integrated into a whole, and the keyboard assembly further comprises a metal shell (2), a signal shielding cover (5) and a control circuit (6); the keyboard assembly (1), the loudspeaker (3) and the warning lamp (4) are arranged on the front surface of the metal shell (2), the signal shielding cover (5) is arranged on the back surface of the metal shell (2), and the control circuit (6) is arranged between the metal shell (2) and the signal shielding cover (5); the control circuit (6) is electrically connected with the keyboard assembly (1), the loudspeaker (3) and the warning lamp (4).

2. An alarm keyboard as claimed in claim 1, wherein: the metal shell (2) is made of stainless steel SUS304, and the protection grade is IP 45.

3. An alarm keyboard as claimed in claim 2, wherein: the control circuit (6) comprises a controller, a USB interface, a keyboard module, an audio input module, an audio output module, a level indicator and an acousto-optic module; the USB interface, the keyboard module, the audio input module, the audio output module and the level indicator are peripheral circuits of the controller and are respectively connected with the controller; the level indicator is connected with the acousto-optic module and used for driving the acousto-optic module.

4. An alarm keyboard as claimed in claim 3, wherein: the control circuit comprises an audio interface, and the audio interface is a 3.5mm universal interface.

5. An alarm keyboard as claimed in claim 3, wherein: the controller comprises an audio chip LN 4863.

6. An alarm keyboard as claimed in claim 3, wherein: the level indicator comprises a chip KA 2284.

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