BACKGROUND

1. Technical Field

The present disclosure relates to a remote monitor system for household electronic devices.

2. Description of Related Art

Digital technology has developed rapidly and spread through various areas of daily lives since the 1990s. As telecommunication networks are introduced into households, it becomes necessary to integrate electronic products and various communication means. Intelligent information products are progressively changing lifestyles of families and society. For example, intelligent home appliances such as security systems are becoming fashionable because the advantages such as safety, convenience, high efficiency, and high speed. Remote controlling of products in the home has become a popular field of research. Radio frequency identification (RFID) is a means of remote and automatic identification of a target such as an object or even an animal. RFID uses radio frequency signals to transmit information via space coupling, and thereby achieves identification. No known integration system capable of incorporating a telecommunication network with RFID for remote monitoring and controlling of the operations of home items such as doors, windows and electrical appliances.

Therefore there is a need for improvement in the art.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a block diagram of an embodiment of a remote monitor system; the remote monitor system includes a wireless control module, an audio input module, a monitor module, and an audio output module.

FIG. 2 is a circuit diagram of the remote monitor system of FIG. 1.

FIG. 3 is a circuit diagram of the audio output module of FIG. 2.

DETAILED DESCRIPTION

The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to â€œanâ€ or â€œoneâ€ embodiment in this disclosure are not necessarily to the same embodiment, and such references mean â€œat least one.â€

FIG. 1 illustrates a block diagram of a remote monitor system in accordance with one embodiment. The remote monitor system is used for monitoring working status of household electronic devices. The remote monitor system includes a wireless control module 100, an audio input module 200, a monitor module 300, and an audio output module 400. The wireless control module 100 receives a remote control signal. The audio input module 200 receives a first audio signal. The wireless control module 100 and the audio input module 200 convert the first audio signal and the first audio signal to digital signals, respectively. The monitor module 300 receives the digital signals, and outputs instruction signals to the household electronic devices for corresponding operations accordingly. The monitor module 300 detects working status of the household electronic devices, and outputs working status signals accordingly. The audio output module 400 receives the working status signals, and converts the working status signals to a second audio signal.

FIG. 2 illustrates a circuit diagram of the remote monitor system in accordance with one embodiment. The wireless control module 100 includes a LED D, a photoelectric amplifier circuit 101, a demodulator circuit 102, a decode circuit 103, an embedded controller 104, and a read only memory 105. The LED D receives the remote control signal, and converts the remote control signal to an electronic signal. The photoelectric amplifier circuit 101 receives the electronic signal from the LED D, and outputs an amplified electronic signal. The demodulator circuit 102 receives the amplified electronic signal, and demodulates the amplified electronic signal to a digital signal. The decode circuit 103 decodes the digital signal from the demodulator circuit 102 and transmits the decoded digital signal to the monitor module 300 via the embedded controller 104. The read only memory 105 stores the second audio signal corresponding to working status of the monitor module 300.

The audio input module 200 includes a microphone 201, a first amplifier circuit 202, a first filter circuit 203, a sample hold circuit 204, and an A/D conversion circuit 205. The microphone 201 receives the first audio signal, and converts the first audio signal to an electronic signal. The first amplifier circuit 202 receives the electronic signal from the microphone 201, and outputs an amplified electronic signal. The first filter circuit 203 receives the amplified electronic signal from the first amplifier circuit 202, and outputs a filtered electronic signal. The sample hold circuit 204 receives the filtered electronic signal, and outputs a steady electronic signal. The A/D conversion circuit 205 receives the steady electronic signal, and converts the steady electronic signal to a digital signal which is transmitted to the monitor module 300 via the embedded controller 104.

The monitor module 300 includes an integrated south bridge chip 301, a CPU 302, and a Bluetooth adapter 303. The integrated south bridge chip 301 receives the digital signals from the embedded controller 104, and outputs the corresponding instruction signals via the Bluetooth adapter 303 accordingly. The CPU 302 controls the integrated south bridge chip 301 to output the instruction signals.

The audio output module 400 includes a D/A conversion circuit 401, a second filter circuit 402, a second amplifier circuit 403, and a speaker 404. The D/A conversion circuit 401 receives the working status signals from the monitor module 300 via the embedded controller 104, and converts the working status signals to the second audio signal. The second filter circuit 402 receives the second audio signal, and outputs a filtered second audio signal. The second amplifier circuit 403 receives the filtered second audio signal, and outputs an amplified second audio signal. The speaker 404 receives the amplified second audio signal, and alarms to indicate accordingly.

FIG. 3 illustrates a circuit diagram of the audio output module. The second filter circuit 402 includes a comparator U1, a first resistor R1, and a second resistor R2. The comparator U1 includes a non-inverting input terminal, an inverting input terminal, and an output terminal. The non-inverting input terminal of the comparator U1 receives a DC voltage via the first resistor R1. The non-inverting input terminal of the comparator U1 is grounded via the second resistor R2. The inverting input terminal of the comparator U1 receives the second audio signal. The output terminal of the comparator U1 outputs the filtered second audio signal. The second amplifier circuit 403 includes an audio amplifier chip U2. The audio amplifier chip U2 includes an audio signal input terminal IN, a first audio signal output terminal OUT1, and a second audio signal output terminal OUT2. The audio signal input terminal IN of the audio amplifier chip U2 is electrically connected to the output terminal of the comparator U1 to receive the filtered second audio signal. The first audio signal output terminal OUT1 and the second audio signal output terminal OUT2 of the audio amplifier chip U2 are electrically connected to the speaker 404 to output the amplified second audio signal. In one embodiment, the DC voltage is +5V.

In application, the microphone 201 receives the first audio signal. The first audio signal is amplified by the first amplifier circuit 202, filtered by the first filter circuit 203, held by the sample hold circuit 204, and A/D converted by the A/D conversion circuit 205 to the digital signal. The embedded controller 104 transmits the digital signal corresponding to the first audio signal to the integrated south bridge chip 301. The integrated south bridge chip 301 outputs instruction signals to the household electronic devices for corresponding operations via the Bluetooth adapter 303.

The LED D receives the remote control signal. The remote control signal is amplified by the photoelectric amplifier circuit 101, demodulated by the demodulator circuit 102, and decoded by the decode circuit 103 to the digital signal. The embedded controller 104 transmits the digital signal corresponding to the remote control signal to the integrated south bridge chip 301. The integrated south bridge chip 301 outputs instruction signals to the household electronic devices for corresponding operations via the Bluetooth adapter 303.

The monitor module 300 outputs the working status signals according to working status of the household electronic devices. The working status signals of the household electronic devices are D/A converted by the D/A conversion circuit 401, filtered by the second filter circuit 402, and amplified by the second amplifier circuit 403 to the second audio signal. The speaker 404 receives the second audio signal, and alarms to indicate working status of the corresponding household electronic devices. The monitor module 300 outputs working status signals according to working status of the integrated south bridge chip 301 and the CPU 302. The working status signals of the integrated south bridge chip 301 and the CPU 302 are D/A converted by the D/A conversion circuit 401, filtered by the second filter circuit 402, and amplified by the second amplifier circuit 403 to the second audio signal. The speaker 404 receives the second audio signal, and alarms to indicate working status of the monitor module 300.

Even though numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description, together with details of the structure and function of the disclosure, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.