CN201409162Y

CN201409162Y - Telephone long-distance home management system

Info

Publication number: CN201409162Y
Application number: CN2009200533674U
Authority: CN
Inventors: 区雄骏; 梁镇棠
Original assignee: Xinxing County No1 Middle School
Current assignee: Xinxing County No1 Middle School
Priority date: 2009-03-25
Filing date: 2009-03-25
Publication date: 2010-02-17
Anticipated expiration: 2019-03-25

Abstract

The utility model discloses a telephone long-distance home management system, which comprises a ring detecting and off-hook simulating unit, a DTMF decoding unit, an alarm signal input unit, a controloutput unit and a CPU (central processing unit), wherein the ring detecting and off-hook simulating unit is used for detecting the ring signal of a telephone line and transmitting the ring signal tothe CPU; the DTMF decoding unit is used for converting the DTMF signal on the telephone line into the digital signal and transmitting the digital signal to the CPU; the CPU is used for transmitting the corresponding control signals to the control output unit and the alarm signal input unit according to the received ring signal transmitted by the ring detecting and off-hook simulating unit and thereceived digital signal transmitted by the DTMF decoding unit; one end of a voice output unit is electrically connected with the telephone line, the other end thereof is electrically connected with the CPU; and the control output unit is used for receiving the control signals sent by the CPU and controlling the work of external electric appliances.

Description

Telephone remote household management system

Technical field

The utility model relates to a kind of telephone remote household management system.

Background technology

Because carelessness of people has caused many avoidable accidents, brings unnecessary loss.Fire, theft ... countless, such as there being the people to boil thing at home, forgotten before going out electrical equipment is turned off, caused fire, all brought unnecessary loss for oneself and other people, if have no talent in the family, the thief enters house to scrounge and knows with regard to the no one, has serious potential safety hazard.

Summary of the invention

The purpose of this utility model is to overcome the safety problem that exists in the prior art household, provides a kind of by dialing, even in staying out, also can control the telephone remote household management system of electrical equipment in the family whenever and wherever possible.

For realizing above purpose, the utility model has been taked following technical scheme: a kind of telephone remote household management system, include ring and detect and simulate off-hook unit, DTMF decoding unit, alarm signal input unit, control output unit, CPU, ring detects and simulation off-hook unit, it is used to detect the bell signal of telephone wire, and is transferred to CPU; The DTMF decoding unit, it is used for converting the dtmf signal on the telephone wire to digital signal, and digital signal is sent to CPU; CPU, it sends corresponding control signal to control output unit and alarm signal input unit according to receiving the bell signal that ring detects and simulation off-hook unit transmits, the digital signal that described DTMF decoding unit transmits; Voice-output unit, the one end is electrically connected with telephone wire, and the other end is electrically connected with described CPU; The control output unit, it is electrically connected with the output of described CPU, and it receives the control signal that CPU is sent, the work of control external connection electrical apparatus.

Owing to adopt the DTMF decoding unit, therefore the control signal on the telephone wire just can well be read, convert digital signal to, make things convenient for the CPU analysis, the signal that CPU detects DTMF decoding unit and ring and simulation off-hook unit sends carries out analyzing and processing, and with corresponding control signal send to respectively voice-output unit, control output unit, to control the operation of each electrical equipment.

Also include RS232 serial communication unit, described CPU is electrically connected with this RS232 serial communication unit.The RS232 serial communication can allow CPU be connected with computer, and is again by the software on the computer, to the setting that CPU is correlated with, convenient and swift.

Described DTMF decoding unit includes MT8888 dual-tone multifrequency decoding integrated chip.The MT8888 chip is decoded to the dtmf signal of phone, when alarm is triggered, utilizes the MT8888 chip to send dtmf signal, and predefined number is dialled.

Also include liquid crystal display, described liquid crystal display is electrically connected on the output of this CPU.Liquid crystal display circuit can show the information that some are relevant, makes more convenient operation.

The utility model compared with prior art, has following advantage: by dialing, even in staying out, also can control electrical equipment in the family whenever and wherever possible, and monitor household safety in real time, when the generation abnormal conditions, when warning device is triggered, just dial in to predefined number automatically, reach the warning effect.Scientific: the remote control mode of remote telephone routine is compared, and demonstrates certain superiority, need not carry out special wiring, does not take the radio frequency resource, has avoided electromagnetic pollution.Simultaneously, because the networking of telephone line various places can make full use of existing telephone network, but so remote control distance Trans-Provincial/Municipal.Practicality: can realize Long-distance Control and warning automatically, the problem of household safety is solved, because phone is very general now, be the carrier of signal by phone therefore, can be applied in each occasion and place.Advanced: traditional wired burglar alarm all is to detect the sound that only gives the alarm in this locality when stealing feelings, and inside does not have controller, and easy destroyed inefficacy installs, expands also inconvenient.By the Single-chip Controlling of CPU, powerful, and be easy to be extended to multiduty intelligent domestic system.

Description of drawings

Fig. 1 is the utility model system block diagram;

Fig. 2 is the power unit circuit diagram;

Fig. 3 is a DTMF decoding unit circuit diagram.

Embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

See also shown in Figure 1, a kind of telephone remote household management system, include ring and detect and simulate off-hook unit, DTMF decoding unit, alarm signal input unit, control output unit, CPU, ring detects and simulation off-hook unit, it is used to detect the bell signal of telephone wire, and is transferred to CPU; The DTMF decoding unit, it is used for converting the dtmf signal on the telephone wire to digital signal, and digital signal is sent to CPU; CPU, it sends corresponding control signal to control output unit and alarm signal input unit according to receiving the bell signal that ring detects and simulation off-hook unit transmits, the digital signal that the DTMF decoding unit transmits; Voice-output unit, the one end is electrically connected with telephone wire, and the other end is electrically connected with CPU; The control output unit, it is electrically connected with the output of CPU, and it receives the control signal that CPU is sent, the work of control external connection electrical apparatus.

Also include RS232 serial communication unit, CPU is electrically connected with this RS232 serial communication unit.

Further, the DTMF decoding unit includes MT8888 dual-tone multifrequency decoding integrated chip U2.This chip can effectively convert the dtmf signal on the telephone wire to digital signal, reads for CPU.

Also include liquid crystal display, liquid crystal display is electrically connected on the output of this CPU.

See also shown in Figure 2, this power circuit includes voltage stabilizing integrated chip U1, its model that adopts is MC7805T, this chip second end ground connection, the common point of the anode of the negative electrode of its first output and diode D1 and the C1 of electric capacity is electrically connected, the anode of diode D1 is electrically connected with second output of relay J 1, the first input end of relay J 1 respectively with the negative electrode of capacitor C 1, one end of capacitor C 2 is electrically connected back ground connection, diode D2 is electrically connected between two outputs of voltage stabilizing integrated chip U1, its negative electrode is electrically connected with first output, its anode is electrically connected the back and is electrically connected with the anode of capacitor C 3 with second output, the minus earth of capacitor C 3, light-emitting diode D3 is LED, its minus earth, and anode is electrically connected with second output of voltage stabilizing integrated chip U1 by resistance R 1.

See also shown in Figure 3ly, be DTMF decoding unit circuit diagram, it comprises MT8888 dual-tone multifrequency decoding integrated chip U2, and physical circuit is asked for an interview accompanying drawing.

This device is parallel to the two ends of telephone set, can not have influence on the normal use of telephone set.The user puts through the telephone number of outside line that this device connects by the telephone set in strange land, sends bell signal by city office switch to telephone set.If this device detects ring five times, promptly nobody connects behind No. five jingle bells, and automatic off-hook enters password and detects, and Be Controlled electrical equipment is selected in the correct back of input, and input opens or closes and carries out remote control electrical appliance then, returns after finishing.When alarm is triggered, utilize the MT8888 chip to send dtmf signal, predefined number is dialled.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1, a kind of telephone remote household management system is characterized in that: includes ring and detects and simulate off-hook unit, DTMF decoding unit, alarm signal input unit, control output unit, CPU,

Ring detects and simulation off-hook unit, and it is used to detect the bell signal of telephone wire, and is transferred to CPU;

The DTMF decoding unit, it is used for converting the dtmf signal on the telephone wire to digital signal, and digital signal is sent to CPU;

CPU, it sends corresponding control signal to control output unit and alarm signal input unit according to receiving the bell signal that ring detects and simulation off-hook unit transmits, the digital signal that described DTMF decoding unit transmits;

Voice-output unit, the one end is electrically connected with telephone wire, and the other end is electrically connected with described CPU;

The control output unit, it is electrically connected with the output of described CPU, and it receives the control signal that CPU is sent, the work of control external connection electrical apparatus.

2, telephone remote household management system as claimed in claim 1 is characterized in that: also include RS232 serial communication unit, described CPU is electrically connected with this RS232 serial communication unit.

3, telephone remote household management system as claimed in claim 2 is characterized in that: described DTMF decoding unit includes MT8888 dual-tone multifrequency decoding integrated chip (U2).

4, telephone remote household management system as claimed in claim 3, it is characterized in that: also include liquid crystal display, described liquid crystal display is electrically connected on the output of this CPU.