CN201142586Y - Charger with alarm function - Google Patents

Abstract

The utility model discloses a charger with the alarm function, which comprises a main machine arranged in the charger. The main machine comprises a power supply circuit, a signal detector, an alarm execution circuit, a microprocessor and a signal trigger circuit. As the utility model adopts the signal detector to detect whether a room is illegally invaded or not, the alarm is generally arranged in the charger, the spatial resources of the prior charger can be fully utilized; furthermore, as various modules are embedded in the charger, the imperceptibility, the safety and the survival rate of an alarm device can be improved, and the situations of closing the alarm device in advance or damaging the alarm device can be reduced. In addition, the alarm power supply and the charger of the charger are not complicated to install, and can be flexibly arranged anywhere in a room.

Description

Charger with alarm function

technical field

The utility model relates to the field of illegal intrusion anti-theft alarm, in particular to a charger with an alarm function.

Background technique

As a power converter, the charger has been widely used in electrical appliances, communications, vehicle electronics and other equipment, especially mobile phones. In the prior art, power supply and charger technologies are very mature and widely used.

The principle of the charger is to convert the mains power into the voltage required for battery charging through the power conversion circuit, and control the charging current and battery status. Although power supplies and chargers are widely used at home and abroad, their functions are single and their utilization rates are extremely low. And among the electronic waste caused by many reasons, chargers, especially mobile phone chargers, have become an important source. Take mobile phone chargers as an example. If the mobile phone fails or is damaged and cannot be used or is lost, the mobile phone charger will directly become garbage; when traveling, traveling, at home, or working, I often carry my mobile phone to charge it because I am afraid that the mobile phone will run out of power. chargers, but the most easily lost items bear the brunt of the mobile phone charger.

Utility model content

The technical problem to be solved by the utility model is to provide a charger with an alarm function.

In order to solve the above problems, the utility model takes the following technical solutions:

A charger with an alarm function, including a host installed inside the charger, the host includes:

Power supply circuit, using 220V power supply to provide working power for each part of the host;

Signal detectors to sense various intrusion signals;

The alarm execution circuit sends out an alarm signal after receiving the trigger signal of the signal detector;

The microprocessor is connected to the opening and closing of the signal detector and the alarm execution circuit;

The signal trigger circuit provides control signals such as start, delay, release, and setting to the microprocessor.

The signal trigger circuit is a remote controller, the host is connected to the microprocessor and is also provided with a signal transceiver, and the remote controller includes:

The power supply circuit provides power for the remote control;

The signal transceiver is used for signal transmission with the host;

The microcontroller is used to identify, analyze and process the signal sent by the host, and drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, and control the host microprocessor The opening, delay, release and setting of;

Press the button to control the remote control on or off.

The remote controller also includes an alarm execution circuit, which enters into an alarm state and sends out an alarm signal after receiving a signal sent by the host.

The remote controller is provided with a display screen, and the display screen is connected to the microcontroller of the remote controller.

The signal trigger circuit is at least four control keys arranged on the host.

The signal detector is a low-frequency sound pressure detector, which is used to detect infrasound waves generated by air pressure changes in confined spaces, and generate sound pressure trigger signals accordingly.

The signal detector is a microwave detector, which is used to detect whether someone approaches by means of microwaves, and generates a microwave trigger signal when someone approaches.

The signal trigger circuit includes a low-frequency sound pressure detector and a microwave detector.

The power supply circuit of the host computer includes a charging circuit of a charger and a boosting circuit connected thereto.

The host is provided with a USB plug.

Compared with the prior art, the beneficial effects of the utility model are: firstly, because the utility model uses a signal detector to detect whether the room is illegally intruded, the alarm is generally installed in the charger, which not only makes full use of the existing The space resources of the charger expand its scope of use, and because each module is embedded in the charger, the concealment, safety, and survival rate of the alarm are greatly improved, and the situation that the alarm is turned off or destroyed in advance is reduced. . Again, the anti-theft devices of the prior art need to be connected or must meet certain installation requirements (such as the requirements such as angle, height, and position of the infrared detector, and the requirements of the position and distance of the door magnetic alarm), which requires the professional quality of the assembly personnel. The requirements are very high, and many occasions (such as hotels for accommodation when going out) are not allowed to carry out this kind of construction, which virtually limits the promotion and sales of products, but the alarm-type power supply and charger of the utility model solves this problem. There is no need for complicated installation, and it can be flexibly placed anywhere in the room.

Description of drawings

Fig. 1 is the structural block diagram of host computer and remote controller of the present utility model;

Fig. 2 is the circuit schematic diagram of the power supply circuit of the main engine of the present utility model;

Fig. 3 is the circuit schematic diagram of the charging circuit in the present embodiment;

Fig. 4 is the circuit schematic diagram of the microprocessor, the control button and the host alarm execution circuit in the embodiment of the present invention;

Fig. 5 is the circuit schematic diagram of the sound pressure detector in the present embodiment;

Fig. 6 is the circuit schematic diagram of the microwave detector in the present embodiment;

Fig. 7 is the circuit principle diagram of signal receiver;

Fig. 8 is the circuit principle diagram of signal transmitter;

Fig. 9 is a schematic circuit diagram of the remote controller in this embodiment;

Fig. 10 and Fig. 11 are schematic circuit diagrams of another embodiment of the present invention.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1, it is a block diagram of the charger with alarm function of the present invention.

A charger with an alarm function includes a host 100 arranged inside the charger.

Host 100 includes:

The power supply circuit 110 utilizes a 220V power supply to provide working power for each part of the host computer;

Signal detector 170, used to sense various intrusion signals;

Alarm execution circuit 160 sends an alarm signal after receiving the trigger signal of the signal detector; the alarm execution circuit is connected to the information receiving processor, which can be an audible alarm circuit (such as a loudspeaker) and/or an optical alarm circuit (such as an LED light) and/or Or shock alarm circuit. When receiving the alarm information sent by the host, the alarm execution circuit 330, under the control of the information receiving processor 320, generates an audible alarm signal and/or an optical alarm signal and/or a vibration alarm signal, using sound and/or light and/or vibration Alarm in other forms to notify users of illegal entry.

The microprocessor 150 is connected to the signal detector and the alarm execution circuit to control them;

The signal trigger circuit 180 provides control signals such as start, delay, release, and setting to the microprocessor.

When the signal detector senses the intrusion signal, it sends the information to the host microprocessor, and the microprocessor controls the alarm execution circuit to send out the sound and light alarm signal. Since the main unit is installed in the charger, the charger has an alarm function and can be used for charging other electronic components, and because it is difficult for ordinary people to think that the alarm will be installed in the charger, it has good concealment and alarm Better results. And because the alarm circuit is arranged in the charger. Make full use of the space of the charger, even if the charger is broken, it can still be used as a separate alarm, and it will not be thrown away at will, which greatly reduces the environmental pollution of electronic products and plays a role in environmental protection.

Referring to Fig. 1 again, the microprocessor in the host computer is also connected with a signal transceiver 150, and the above-mentioned signal trigger circuit is a remote controller 200. Referring to Fig. 3, the remote controller includes:

The power circuit 240 provides power for the remote controller;

The signal transceiving circuit 210, under the control of the microcontroller, sends control information to the host and receives a trigger signal sent by the host.

The microcontroller 220 is used to identify, analyze and process the signal sent by the host computer, and drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, and drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, and control the host microprocessing start, delay, release and setting of the device;

The button 230 is connected to the microcontroller and is used to provide control instructions to the microcontroller.

The signal transceiver of the host is used for signal transmission with the signal transceiver of the remote control.

The host is controlled by a remote controller, which can be operated remotely, ensuring the safety of the homeowner.

Preferably, the remote controller may also include an alarm execution circuit 260 connected to a microcontroller, which may be an audible alarm circuit (such as a speaker) and/or an optical alarm circuit (such as an LED light) and/or a vibration alarm circuit. When receiving the alarm information sent by the host, the alarm execution circuit 330, under the control of the information receiving processor 320, generates an audible alarm signal and/or an optical alarm signal and/or a vibration alarm signal, using sound and/or light and/or vibration Alarm in other forms to notify users of illegal entry.

The remote controller is provided with a display screen, and the display screen is connected to the microcontroller of the remote controller to display various information, so that the owner of the house can clearly understand the various status information of the room.

The above-mentioned signal triggering circuit can also be at least 4 control buttons 130, as shown in FIG. 1 . The control button is connected to the microprocessor, and is used to provide control signals such as start, delay, release, and setting to the microprocessor.

Considering that the direct button to cancel the alarm may be used by thieves, the charger with alarm function of the present invention can also include the mode of inputting a password to cancel the alarm signal. And there is a function of locking the host by continuously entering wrong passwords.

The signal detector in the above embodiment can be a low-frequency sound pressure detector, which is used to detect the infrasound wave generated due to the change of air pressure in the confined space, and generate a sound pressure trigger signal accordingly. The sound pressure detector 170 can detect The vibration of the air caused by the impact can detect the infrasound waves produced before the door or window is pushed open or broken. A change in air pressure in a room due to a door being opened or a window being struck or trespassing creates an infrasound signal at a frequency below the audible frequency of the human ear. Infrasound is a sound wave that cannot be heard by the human ear, its frequency is lower than 20Hz, and the effective detection area is more than 300 square meters. After the infrasound signal is detected by the sound sensor of the sound pressure detector 170 , a pulse signal will be generated and output to the microprocessor 140 after passing through circuits such as low-pass filtering, pre-amplification, comparison, and shaping.

In the above embodiment, the signal detector may also be a microwave detector, which is used to detect whether someone is approaching by means of microwaves, and generate a microwave trigger signal when someone approaches. The microwave detector 180 generates microwaves in the room to detect the activities of people in the room. When detecting illegal intrusion in the room, etc., it will generate a pulse signal and output it to the microprocessor 140 .

In the above embodiment, the signal detector 170 may also include a low-frequency sound pressure detector and a microwave detector. When one of the units fails to work properly, the other unit can continue to work, thereby improving the reliability of the entire device.

The characteristics that the warning type charger that adopts technology such as existing low-frequency sound pressure sensor to make have: the one, originality. Using a low-frequency sound pressure sensor, it can detect the airtightness and volume of the relative housing space, and the change state caused by external influences, and give an alarm to the change state. Its unique technical characteristics cannot be replaced by other detection technologies; the second is high efficiency. The low-frequency sound pressure sensor has a detection range of more than 300 square meters in an environment suitable for the requirements, and the application efficiency of the low-frequency sound pressure sensor is high. The ultra-low frequency amplitude signal is monitored, and it will not be disturbed by the movement of people, animals and other sound sources to cause false alarms. The effective monitoring and comparison of signals within a specific limit makes it easy for people to judge the cause of the detection and alarm; the fourth is reliability: the ultra-low frequency sensor adopts SPO miniaturized integrated circuit packaging, small size, low power consumption and other technical characteristics, ensuring Fifth, the low-frequency sound pressure sensor can be placed inside the charger, so that the charger has an alarm function. Its structure is simple and compact, easy to carry, and flexible to operate. Sixth, because the product has added alarm and other functions, when the connected product is discarded, it can still be used, which reduces the pollution of electronic products and effectively protects the environment.

Considering that the thief may cut off all the power supply of the charger with alarm function or destroy it when the thief may notice the existence of the alarm, the microprocessor of the host is also connected with a mute control circuit to provide a mute alarm function. In the mute state, if When the door is opened or the window glass is hit or there is illegal intrusion, the alarm execution circuit of the above-mentioned remote controller will execute the alarm when the host cannot alarm.

The host power supply circuit 110 can be an ordinary charging circuit, and can use 220V AC power supply to supply power to its various parts. The host is also provided with a USB plug, which can be plugged into a computer to charge and directly provide 5.0V DC.

The power supply circuit 110 of the above-mentioned host computer can also include its own charging circuit of the charger and a booster circuit connected thereto, so that the low voltage of the cell phone battery can be changed to the high voltage required by the host computer through the booster circuit, which can be used when the external power supply is cut off. Charge it with the phone battery. Since the utility model adopts multiple power supply modes to supply power, the utility model is more flexible in use.

It can be understood that, for the sake of clarity of the drawings, the power supply circuit of the above-mentioned host and the connection between the power supply circuit of the remote controller and other parts are omitted.

The work flow of the charger with alarm function of the utility model.

After the host is powered on, the charger starts to work, and the sound pressure detector is activated, and the host enters an alert state.

When the door is pried open, the window glass is broken, or someone enters illegally, the sound pressure detector will generate a sound pressure trigger signal and send it to the microprocessor.

After the microprocessor receives the sound pressure trigger signal, it starts the alarm execution circuit and sends out the alarm signal.

The above is the workflow of using low-frequency sound pressure detectors, and the workflow of using microwave detectors is introduced below:

Power on, start the microwave detector, the microwave detector enters the alarm state, and the microprocessor detects whether the trigger signal of the microwave detector is received. If the microwave detector does not send a trigger, it means that no one has entered the room. The processor will return to the alarm state and re-enter the alert state.

If the microwave detector sends a trigger signal, it means that someone has entered the room, and the microprocessor starts the alarm execution circuit to send out an alarm signal; after a period of alarm, the host will enter the next alarm cycle.

It can be understood that the charger with an alarm function of the present invention does not need to install a detector in a connection mode, and can be flexibly installed in a room.

Please refer to Fig. 2 to Fig. 5, which are an embodiment of the charger with alarm function of the present invention.

Fig. 2 is a schematic circuit diagram of the power supply circuit of the host of the present invention. Among them, the mains power conversion circuit, chip U10 and its peripheral circuits respectively convert the direct current provided by the mains and the battery into 5.0V direct current; the host power supply circuit provides working power for the charging circuit and other parts of the system.

Fig. 3 is a schematic circuit diagram of the charging circuit in this embodiment. Chip U1 is a battery charging control IC. It and its peripheral circuits provide charging current for the rechargeable battery.

Fig. 4 is a schematic circuit diagram of the microprocessor, the control buttons and the host alarm execution circuit in the embodiment of the utility model. The microprocessor is composed of chip U2 and peripheral circuits, and a safety alarm program is set inside the chip. Among them, the chip U2 can be selected as PIC16F630. The chip U4 can choose the model as 93C46P.

The alarm execution circuit of this embodiment is connected to the horn LS301 of the horn control port (pin 13) of the chip U2 and the red LED DS302 and the blue LED DS301 connected to the light control port (pin 12, 11) of the chip U2 .

Fig. 5 is a schematic circuit diagram of the sound pressure detector in this embodiment. Chip U3 and peripheral circuits are used to detect infrasound signals. The output end of the sound pressure detector is connected to the sound pressure trigger port (pin 2) of the chip U2; the power supply of the sound pressure detector is controlled by the signal sent by the sound pressure power control port (pin 3) of the chip U2. Among them, the model that can be selected for the chip U3 is HAR2510.

Fig. 6 is a schematic circuit diagram of the microwave detector in this embodiment. Chip U5 and peripheral circuits are used to detect whether there are illegal personnel entering the room through microwave signals. The output end of the microwave detector is connected to the microwave trigger port (pin 4) of the chip U2; the power supply of the microwave detector is controlled by the signal sent by the microwave power control port (pin 5) of the chip U2. Among them, the model that U5 can choose is LM324.

Fig. 7 and Fig. 8 are the schematic circuit diagrams of the signal transceiver in the embodiment of the utility model, including two parts, Fig. 7 is the schematic circuit diagram of the signal receiver, and Fig. 8 is the schematic circuit diagram of the signal transmitter.

The signal receiver includes the chip and its peripheral circuit, receives the data from the remote controller through the antenna ANT, and sends it to the microprocessor after preprocessing. Its output end is connected to the key data receiving port (pins 14-17) of the chip U2. The model that can be used for U902 is PT2272, and the model that can be used for U903 is LM358A.

The signal transmitter includes chips U5, U6 and their peripheral circuits. Under the control of the microprocessor, it sends data to the information receiver (refer to FIG. 10 and FIG. 11 ) through the antenna E701. Its input end is connected to the data sending port (pin 21) of the chip U2; the signal sent by the power control port (pin 22) of the signal transmitter is controlled. Among them, the model that U6 can choose is PA2460, and the model that U7 can choose is TDK5110.

Fig. 9 is a schematic circuit diagram of the remote controller in this embodiment. The remote control consists of chip U901 and its peripheral circuits. U901 can control the host through key coding and then send signals to ANT through antenna ANT.

The following describes the working process of the charger with alarm function in this embodiment.

When the charger is plugged into a power source (including a mains socket, a dedicated power supply, and a USB), the charger starts to work and supplies power to the host system at the same time. But at this time the system is only in the charging state and does not directly enter the alarm state. When the user can activate the alarm function of the system through the button on the host or the remote control, after the function is activated, the sound pressure detector is activated, and the blue light is on. At this time The system enters an alert state.

When the sound pressure detector is triggered, the sound pressure signal is sent to the microprocessor, the red and blue lights of the alarm light up alternately, and the horn also sounds an alarm tone. If it is a false alarm, you can use the remote control to turn it off, if not, the sound and light alarm will go on indefinitely.

When there is no external power supply, we can let the charged battery supply power to the system, which can prevent someone from taking advantage of the power outage.

Fig. 10 and Fig. 11 are schematic circuit diagrams of another embodiment of the present invention. The difference between this embodiment and Fig. 1 is that the single-chip microcomputer is changed into a 555-type single-chip microcomputer, and its circuit is convenient and simple, easy to realize, and no remote controller is used.

Still another embodiment is to make the sound pressure detector circuit, the microwave detector circuit and the alarm circuit into a module similar to a battery. This module can be directly installed on the charger when not charging, so that the charger can provide working power. Its working principle is the same as that in Figure 1.

What is said above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present utility model. These improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (10)

1. A charger with an alarm function, characterized in that it includes a host installed inside the charger, and the host includes: Power supply circuit, using 220V power supply to provide working power for each part of the host; Signal detectors to sense various intrusion signals; The alarm execution circuit sends out an alarm signal after receiving the trigger signal of the signal detector; The microprocessor is connected to the opening and closing of the signal detector and the alarm execution circuit; The signal trigger circuit provides control signals such as start, delay, release, and setting to the microprocessor. 2. The charger with alarm function according to claim 1, characterized in that, the signal trigger circuit is a remote controller, the host is connected to the microprocessor and is also provided with a signal transceiver, and the remote controller includes: The power supply circuit provides power for the remote control; The signal transceiver is used for signal transmission with the host; The microcontroller is used to identify, analyze and process the signal sent by the host, and drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, drive the alarm circuit to generate an alarm prompt after receiving the alarm signal, and control the host microprocessor The opening, delay, release and setting of; Press the button to control the remote control on or off. 3. The charger with an alarm function according to claim 2, wherein the remote controller further includes an alarm execution circuit, which enters an alarm state and sends out an alarm signal after receiving a signal sent by the host. 4. The charger with alarm function according to claim 2, characterized in that, the remote controller is provided with a display screen, and the display screen is connected to the microcontroller of the remote controller. 5. The charger with an alarm function according to any one of claims 1, characterized in that the signal trigger circuit is at least four control buttons provided on the host. 6. The charger with alarm function according to any one of claims 1-5, characterized in that the signal detector is a low-frequency sound pressure detector, which is used to detect infrasound waves generated due to air pressure changes in confined spaces, And correspondingly generate a sound pressure trigger signal. 7. The charger with alarm function according to any one of claims 1-5, characterized in that the signal detector is a microwave detector, which is used to detect whether someone is approaching by means of microwaves. When the microwave trigger signal is generated. 8. The charger with alarm function according to any one of claims 1-5, characterized in that, the signal trigger circuit includes a low-frequency sound pressure detector and a microwave detector. 9. The charger with an alarm function according to claim 1, wherein the power supply circuit of the host includes a charging circuit of the charger and a boost circuit connected thereto. 10. The charger with alarm function according to claim 1, characterized in that the host is provided with a USB plug.

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