CN212433895U - Household anti-theft alarm system - Google Patents

Abstract

The utility model discloses a home-use burglar alarm system installs in the room internally, include: the triggering device is arranged on the inner side of the door body and positioned at the lower door seam position of the door body, and the triggering device is contacted with the door body; the hot pepper water injection device is fixedly arranged on a partition wall in the room body and is positioned above the door body; the alarm is arranged on the partition wall; and the controller is arranged on the partition wall and is electrically connected with the trigger device, the pepper water spraying device and the alarm. When a thief enters a bedroom through a door body, the triggering device is started, signals are sent to the controller, the controller controls the alarm to be started and gives an alarm, the pepper water spraying device is controlled to be started simultaneously, pepper water is sprayed to the thief, the harm degree of the thief can be reduced, the thief can be caught conveniently, the crime prevention effect is achieved, and the safety of residents is guaranteed.

Description

Household anti-theft alarm system

Technical Field

The utility model relates to an indoor anti-theft device technical field, more specifically the utility model relates to a home-use burglar alarm system that says so.

Background

The household anti-theft alarm device is designed for preventing lawless persons from burglary in a room, and is a system for automatically detecting invasion in a defense-deploying monitoring area by using a physical method or an electronic technology, generating an alarm signal and prompting an attendant to alarm an area part, displaying a system which can possibly take measures, wherein along with the continuous development of the society, the types of anti-theft alarm mechanisms are more and more, but part of anti-theft alarm systems cannot well play a role in preventing criminal behaviors when in use, and the phenomenon that part of thieves injure people maliciously can occur when the thieves are found, so that the safety of households cannot be well guaranteed, and when the thieves maliciously destroy lines, the normal use of the anti-theft alarm device cannot be well guaranteed, so that the application range of the device is reduced.

Therefore, how to provide a home burglar alarm system which can prevent crimes, avoid the phenomenon that some thieves injure people maliciously, ensure the safety of residents, has self-powered capability, and can be used normally when a line is damaged by the thieves is a problem that needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can play and prevent the crime, avoid the phenomenon of the malicious wounded of part thief, guarantee the safety of resident family, and have self-power ability, when guaranteeing that the circuit is destroyed by the thief, domestic burglar alarm system that can normal use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a home-use burglar alarm system is installed in a house body, and comprises:

the triggering device is arranged on the inner side of the door body and positioned at the lower door seam position of the door body, and the triggering device is in contact with the door body;

the hot pepper water injection device is fixedly arranged on a partition wall in the house body and is positioned above the door body;

the alarm is arranged on the partition wall;

and the controller is arranged on the partition wall and is electrically connected with the triggering device, the pepper water spraying device and the alarm.

Can know via foretell technical scheme, compare with prior art, the utility model discloses a home-use burglar alarm system, enter into the bedroom through the door body when the thief, trigger device starts, and with signal transmission to controller, the controller then controls the alarm and starts and send out the police dispatch newspaper, the hot pepper water injection device of simultaneous control starts, spray hot pepper water to the thief, thereby can reduce thief's harm degree, and made things convenient for the arrest to the thief, the effect of preventing the crime has been played, the resident safety has been guaranteed.

Further, the triggering device includes:

the transverse rod of the L-shaped fixing frame is clamped at the lower door seam of the door body, the inner sides of the transverse rod and the vertical rod of the L-shaped fixing frame are respectively provided with a control switch, and the two control switches are electrically connected with the controller;

one end of the trigger rod is hinged with the cross rod of the L-shaped fixing frame, and the trigger rod is contacted with the door body;

and one end of the first spring is fixedly connected with the inner side of the cross rod of the L-shaped fixing frame, and the other end of the first spring is fixedly connected with the inner side of the trigger rod.

The beneficial effects who adopts above-mentioned technical scheme to produce are, when the thief enters into the room internally and gently pushes away the door body, the rotation can take place for the trigger bar under the promotion of the door body, first spring can be compressed, the control switch of upper right can be triggered, the alarm can be started and send out the police dispatch newspaper, there is malicious criminal offender's tendency as the thief, and promote the door body and break into the bedroom on room body right side and make the trigger bar take place the fracture damage time by force, the control switch of lower left side can be triggered this moment, controller control hot pepper water injection device starts, spray hot pepper water to the thief, thereby avoided the thief to cause the phenomenon of personal injury to the resident family personnel, the effect of preventing the crime has been played.

Further, trigger device still includes spacing subassembly, spacing subassembly includes:

the fixed block is fixedly connected with the bottom of the inner side of the door body through a first screw;

one side of the top end of the transverse limiting plate is fixedly connected with the bottom end of the fixing block, and a through hole is formed in the position, far away from the door body, of the transverse limiting plate;

the limiting bracket penetrates through the through hole and is positioned outside the vertical rod of the fixing frame;

and one end of the second spring is fixedly connected with the lower surface of the transverse limiting plate, and the other end of the second spring is fixedly connected with the bottom of the limiting bracket.

The beneficial effects who adopts above-mentioned technical scheme to produce are, when the bedroom that indoor personnel went to room body right side had a rest, through controller starting drive, then upwards stimulate spacing support, the second spring is compressed this moment, put L type mount inboard at horizontal limiting plate after that, and be in door crack position department under the body, then loosen spacing support, spacing support lapse stops in the L type mount outside, because the L type mount outside carries on spacingly through spacing support and horizontal limiting plate, so the thief can not lead to the fact destruction and the position of advancing the keeping away from the door body to trigger device before the start, trigger device's normal operating has been guaranteed.

Further, spacing support includes: the vertical plate and the transverse plates are integrally connected to the upper end and the lower end of the vertical plate, the vertical plate penetrates through the through hole, the transverse plates are located on the upper side and the lower side of the transverse limiting plate respectively, and the other end of the second spring is fixedly connected with the transverse plates located below the transverse limiting plate.

The beneficial effect who adopts above-mentioned technical scheme to produce is that, the setting of two diaphragms has guaranteed that vertical plate can not fall out from the through-hole.

Further, the pepper water spraying device includes:

the mounting plate is fixedly mounted on the partition wall through a second screw and is positioned above the door body, and a clamping block is integrally connected to the side end, far away from the partition wall, of the mounting plate;

the wall of the outer box of the storage box is provided with a clamping groove, the clamping block is fixedly clamped with the clamping groove, the top end of the storage box is open, and the bottom end of the storage box is provided with an infrared sensor;

the box cover is hinged with the open end of the storage box;

the water pump is arranged at the bottom of the storage box, a water inlet of the water pump is communicated with the interior of the storage box, a water outlet of the water pump is connected with a spray head through a guide pipe, and the spray head is arranged downwards;

wherein, infrared sensor, the water pump all with the controller electricity is connected.

Adopt the beneficial effect that above-mentioned technical scheme produced, there is the tendency of malicious criminal injury people when the thief, and promote the door body by force and break into the bedroom on room body right side and make the trigger bar when breaking and damaging, the control switch of left side below can be triggered this moment, water pump and infrared sensor can be started after that, when the thief walks to the infrared sensor bottom, infrared sensor can upload inductive signal to the controller, the controller can control the water pump extraction chilli water this moment, then spout to the thief through pipe and shower nozzle, with this phenomenon that the thief caused personal injury to resident family personnel has been avoided, the effect of preventing the crime has been played, and spray the chilli water to the thief, also made things convenient for the arrest to the thief.

Furthermore, a monitor is arranged on the top of the inner wall of the house body and electrically connected with the controller.

The beneficial effect that adopts above-mentioned technical scheme to produce is, can shoot thief's criminal process, reserve the evidence.

Furthermore, a lighting lamp and a light sensor are mounted on the ceiling of the house body, and the lighting lamp and the light sensor are electrically connected with the controller.

The beneficial effect who adopts above-mentioned technical scheme to produce is, senses indoor light and can upload the signal to the controller less intensely when the light sense ware, and the controller can control the light and light this moment to be convenient for the more clear criminal process of shooting the thief of watch-dog, thereby can be better provide the crime evidence, and played fine expulsion effect to the criminal.

Furthermore, an accommodating cavity is formed in the inner wall of the house body, a power supply device is arranged in the accommodating cavity, and the power supply device is electrically connected with the alarm, the controller, the control switch, the infrared sensor, the water pump, the monitor, the illuminating lamp and a main power line of the light sensor.

The anti-theft alarm system has the advantages that when the external power supply is damaged by a thief, the power supply device supplies power to the system, and normal operation of the anti-theft alarm system is guaranteed.

Further, the power supply device includes:

the standby battery is fixedly arranged in the accommodating cavity and is electrically connected with the external power supply;

the electromagnet is fixedly arranged on the upper cavity wall of the accommodating cavity and is electrically connected with the external power supply;

the upper surface of the iron plate is electromagnetically connected with the lower surface of the electromagnet, a rubber layer is adhered to the lower surface of the iron plate, two contact blocks are fixedly installed on the lower surface of the rubber layer at intervals, and the two contact blocks are respectively and electrically connected with the positive electrode and the negative electrode of a total power line of each electric device in the system;

the shielding door is arranged at the position of the opening of the accommodating cavity;

and when the external power supply is powered off, the two contact blocks are respectively and electrically connected with the positive electrode and the negative electrode of the standby battery.

The beneficial effect that adopts above-mentioned technical scheme to produce is that, when the thief destroyed and when cutting off the power supply to the external power supply circuit of the room body before advancing into the room, the electro-magnet loses magnetism this moment, and iron plate can downstream this moment, and two touch multitouches are put through with stand-by battery's positive and negative pole joint, and whole system can provide the electric energy through stand-by battery this moment, so the phenomenon of system outage can not appear.

Furthermore, both sides of the upper surface of the iron plate are fixedly connected with one end of a third spring, and the other end of the third spring is fixedly connected with the upper cavity wall of the accommodating cavity.

The technical scheme has the beneficial effects that when the external power supply is normal, the electromagnet is electromagnetically connected with the iron plate, the third spring is compressed, when the external power supply is abnormal and the power is cut off, the electromagnet loses magnetism, the iron plate moves downwards under the elasticity and gravity of the third spring until the two contact blocks are connected with the positive and negative electrode connectors of the standby battery, and at the moment, the standby battery provides electric energy for the system; when the external power supply is electrified again, the electromagnet generates magnetism to suck the iron plate, at the moment, the two contact blocks are separated from the positive electrode and the negative electrode of the standby battery, and the system adopts the external power supply for supplying power.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a household burglar alarm system according to the present invention.

Fig. 2 is a schematic structural diagram of a triggering device in the household burglar alarm system.

Fig. 3 is a schematic structural diagram of a limiting bracket in the household anti-theft alarm system.

Fig. 4 is a schematic structural diagram of a pepper water spraying device in the household anti-theft alarm system.

Fig. 5 is a schematic structural diagram of a power supply device in the household anti-theft alarm system.

Wherein: 1-a house body, 2-a trigger device, 21-L-shaped fixed frame, 22-a control switch, 23-a trigger rod, 24-a first spring, 25-a limiting assembly, 251-a fixed block, 252-a first screw, 253-a transverse limiting plate, 254-a limiting bracket, 2541-a vertical plate, 2542-a transverse plate, 255-a second spring, a 3-door body, a 4-pepper water spraying device, 41-a mounting plate, 411-a clamping block, 42-a second screw, 43-a storage box, 431-a clamping groove, 44-an infrared sensor, 45-a box cover, 46-a water pump, 47-a guide pipe, 48-a spray head, 49-an air inlet pipe, 5-an alarm, 6-a controller, 7-a monitor and 8-a lighting lamp, 9-light sensor, 10-power supply device, 101-standby battery, 102-electromagnet, 103-iron plate, 104-contact block, 105-shielding door, 106-third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the embodiment of the utility model discloses a home-use burglar alarm system installs in room body 1, include:

the trigger device 2 is arranged on the inner side of the door body 3 and is positioned at the lower door seam position of the door body 3, and the trigger device 2 is in contact with the door body 3;

the pepper water injection device 4 is fixedly arranged on a partition wall in the room body 1 and is positioned above the door body 3;

the alarm 5 is arranged on the partition wall;

and the controller 6 is arranged on the partition wall, and is electrically connected with the trigger device 2, the pepper water spraying device 4 and the alarm 5.

The trigger device 2 includes:

the transverse rod of the L-shaped fixing frame 21 is clamped at the lower door seam position of the door body 3, the inner sides of the transverse rod and the vertical rod of the L-shaped fixing frame 21 are respectively provided with a control switch 22, and the two control switches 22 are electrically connected with the controller 6;

one end of the trigger rod 23 is hinged with the cross rod of the L-shaped fixed frame 21, the inclination angle of the trigger rod 23 is 30 degrees, and the trigger rod 23 is in contact with the door body 3;

and one end of the first spring 24 is fixedly connected with the inner side of the cross bar of the L-shaped fixed frame 21, and the other end of the first spring 24 is fixedly connected with the inner side of the trigger rod 23.

Trigger device 2 still includes spacing subassembly 25, and spacing subassembly 25 includes:

the fixed block 251 is fixedly connected with the bottom of the inner side of the door body 3 through a first screw 252;

one side of the top end of the transverse limiting plate 253 is fixedly connected with the bottom end of the fixing block 251, and a through hole is formed in the position, away from the door body 3, of the transverse limiting plate 253;

the limiting bracket 254 is arranged by penetrating through the through hole, and the limiting bracket 254 is positioned outside the vertical rod of the L-shaped fixing frame 21;

and one end of the second spring 255 is fixedly connected with the lower surface of the transverse limiting plate 253, and the other end of the second spring 255 is fixedly connected with the bottom of the limiting bracket 254.

The limit bracket 254 includes: vertical plate 2541 and the horizontal plate 2542 of integrative connection on vertical plate 2541 lower extreme, the through-hole setting is worn to locate by vertical plate 2541, and two horizontal plates 2542 are located the last downside of horizontal limiting plate 253 respectively, the second spring 255 other end and the horizontal plate 2542 fixed connection that is located the horizontal limiting plate 253 below.

The pepper water spraying device 4 includes:

the mounting plate 41 is fixedly mounted on the partition wall through a second screw 42 and is positioned above the door body 3, and a clamping block 411 is integrally connected to the side end, far away from the partition wall, of the mounting plate 41;

a clamping groove 431 is formed in the outer wall of the storage box 43, the clamping block 411 is fixedly clamped with the clamping groove 431, the top end of the storage box 43 is open, and the bottom end of the storage box 43 is provided with an infrared sensor 44;

a box cover 45, wherein the box cover 45 is hinged with the open end of the storage box 43;

the water pump 46 is installed at the bottom of the storage box 43, a water inlet of the water pump 46 is communicated with the interior of the storage box 43, a water outlet of the water pump 46 is connected with the spray head 48 through a guide pipe 47, the spray head 48 is arranged downwards, and the spray head 48 can be inclined at 45 degrees;

wherein, infrared sensor 44, water pump 46 all are connected with controller 6 electricity, are provided with intake pipe 49 on the case lid 45, and intake pipe 49 inboard is provided with the check valve to avoid the smell of hot pepper water to give off to indoorly, and the check valve on the intake pipe 49 has guaranteed that external atmosphere can get into and deposits the incasement, can prevent to deposit the incasement and form the negative pressure after the water pump starts.

The top of the inner wall of the house body 1 is provided with a monitor 7, and the monitor 7 is electrically connected with the controller 6.

The ceiling of the room body 1 is provided with an illuminating lamp 8 and a light sensor 9, and the illuminating lamp 8 and the light sensor 9 are electrically connected with the controller 6.

The interior wall of the house body 1 is provided with a containing cavity, a power supply device 10 is arranged in the containing cavity, and the power supply device 10 is electrically connected with the total power line of the alarm 5, the controller 6, the control switch 22, the infrared sensor 44, the water pump 46, the monitor 7, the illuminating lamp 8 and the light sensor 9.

The power supply device 10 includes:

the standby battery 101, the standby battery 101 is fixedly installed in the accommodating cavity, and the standby battery 101 is electrically connected with an external power supply;

the electromagnet 102 is fixedly arranged on the upper cavity wall of the accommodating cavity and is electrically connected with an external power supply;

the upper surface of the iron plate 103 is electromagnetically connected with the lower surface of the electromagnet 102, a rubber layer is adhered to the lower surface of the iron plate 103, two contact blocks 104 are fixedly installed on the lower surface of the rubber layer at intervals, and the two contact blocks 104 are respectively and electrically connected with the positive electrode and the negative electrode of a total power line of each electric device in the system;

the shielding door 105, the shielding door 105 is arranged on the open position of the accommodating cavity;

when the external power supply is powered off, the two contact blocks 104 are electrically connected with the positive electrode and the negative electrode of the backup battery 101 respectively.

Both sides of the upper surface of the iron plate 103 are fixedly connected with one end of a third spring 106, and the other end of the third spring 106 is fixedly connected with the upper cavity wall of the accommodating cavity.

The controller 6 can also be electrically connected with a guard system, and sends an alarm signal to a guard to prompt the guard to take action of catching and rescuing quickly.

The utility model discloses a domestic burglar alarm system's work flow as follows: all electrical appliances in the anti-theft alarm system are external power supplies, when the device is used under the condition of good light in the daytime, the mounting plate 41 is positioned above the right side of the partition wall of the room body 1 through the second screw 42, then the storage box 43 is clamped on the clamping block 411, then the box cover 45 is opened to add pepper water into the storage box 43, after the device is assembled, the fixing block 251 is fixed at the lower right side of the door body 3 through the first screw 252, when an indoor person goes to a bedroom at the right side of the room body 1 to have a rest, the device is started through the controller 6, then the limiting bracket 254 is pulled upwards, at the moment, the second spring 255 is compressed, then the L-shaped fixing frame 21 is placed at the inner side of the transverse limiting plate 253 and is placed at the position of the lower door seam of the door body 3, then the limiting bracket 254 is released, the limiting bracket 254 moves downwards and stops at the outer side of the L-shaped fixing frame 21, and the outer side, therefore, the thief cannot damage the trigger device before starting and push the trigger device to a position far away from the door body 3, and the normal operation of the device is ensured. When a thief enters the room body 1 and slightly pushes the door body 3, the trigger rod 23 is pushed by the door body 3 to rotate, the first spring 24 is compressed, the control switch 22 at the upper right side is triggered, the light sensor 9 senses light at the moment, the illuminating lamp 8 cannot be started because the light is good in the daytime, the monitor 7 is started at the moment, the alarm 5 is started and gives an alarm, when the thief tends to hurt people by malicious crimes and forcibly pushes the door body 3 to rush into a bedroom at the right side of the room body 1 and the trigger rod 23 is broken and damaged, the control switch 22 at the lower left side is triggered at the moment, then the water pump 46 and the infrared sensor 44 are started, when the thief walks to the bottom end of the infrared sensor 44, the infrared sensor 44 uploads a sensing signal to the controller 6, the controller 6 controls the water pump 46 to pump chili water at the moment, and then the chili water is sprayed to the thief through the guide pipe 47 and the spray nozzle 48, therefore, the phenomenon that a thief harms the body of a resident is avoided, the criminal prevention effect is achieved, the thief is sprayed with hot pepper water, the thief is convenient to capture, meanwhile, the controller 6 can upload an alarm signal to a guard room to prompt police officers to take capture and rescue measures quickly, when the thief destroys an external power supply circuit of the house body 1 before entering a house and cuts off the power, the electromagnet 102 loses magnetism at the moment, under the elastic recovery of the third spring 106, the iron plate 103 moves downwards at the moment until the two contact blocks 104 are connected with the positive and negative electrode connectors of the standby battery 101, the whole system can provide electric energy through the standby battery 101 at the moment, the power-off phenomenon of the system cannot occur, and the normal operation of the anti-theft alarm system is guaranteed.

If when using under the not good condition of light night, when control switch 22 of L type mount 21 upper right is triggered, light sense ware 9 responds to light and can upload signal to controller 6 more weakly, and controller 6 control light 8 lights this moment to be convenient for watch-dog 7 more clear shoot thief's criminal process, thereby can be better provide the crime evidence, and played fine expulsion effect to the criminal.

Compared with the prior art, the utility model discloses a beneficial effect that domestic burglar alarm system produced is:

1. in the utility model, the pepper water spraying device can spray pepper water to the thief, thereby reducing the harm degree of the thief, facilitating the catching of the thief, playing the role of preventing crimes and ensuring the safety of residents;

2. in the utility model, through the arrangement of the power supply device, when the external power supply circuit is maliciously destroyed before the stealer steals, the standby battery can be automatically started to supply power to the system, thereby ensuring the normal use of the system and increasing the application range of the system;

3. in the utility model, through the arrangement of the limiting component, the thief can not damage the triggering device before starting and push the triggering device to a position far away from the door body, thereby ensuring the normal operation of the triggering device;

4. the utility model discloses in set up watch-dog, light and light sense ware, under the better and not good condition of light night of light daytime, all can be clear shoot thief's criminal process to can be better provide the crime evidence, and played fine expulsion effect to the criminal.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A home-use burglar alarm system is installed in a room body (1), and is characterized by comprising:

the trigger device (2) is arranged on the inner side of the door body (3) and located at the position of a lower door seam of the door body (3), and the trigger device (2) is in contact with the door body (3);

the hot pepper water injection device (4) is fixedly arranged on a partition wall in the room body (1) and is positioned above the door body (3);

the alarm (5), the said alarm (5) is set up on the said partition wall;

the controller (6) is arranged on the partition wall, and the controller (6) is electrically connected with the trigger device (2), the pepper water spraying device (4) and the alarm (5).

2. A household burglar alarm system according to claim 1, characterized in that said triggering means (2) comprises:

the door comprises an L-shaped fixing frame (21), a cross rod of the L-shaped fixing frame (21) is clamped at the position of a lower door seam of the door body (3), control switches (22) are arranged on the inner sides of the cross rod and the vertical rod of the L-shaped fixing frame (21), and the two control switches (22) are electrically connected with the controller (6);

one end of the trigger rod (23) is hinged with the cross rod of the L-shaped fixing frame (21), and the trigger rod (23) is contacted with the door body (3);

one end of the first spring (24) is fixedly connected with the inner side of a cross rod of the L-shaped fixing frame (21), and the other end of the first spring (24) is fixedly connected with the inner side of the trigger rod (23).

3. A household burglar alarm system according to claim 2, characterized in that said triggering means (2) further comprises a limiting member (25), said limiting member (25) comprising:

the fixing block (251) is fixedly connected with the bottom of the inner side of the door body (3) through a first screw (252);

one side of the top end of the transverse limiting plate (253) is fixedly connected with the bottom end of the fixing block (251), and a through hole is formed in the position, away from the door body (3), of the transverse limiting plate (253);

the limiting support (254) penetrates through the through hole, and the limiting support (254) is located on the outer side of the vertical rod of the L-shaped fixing frame (21);

one end of the second spring (255) is fixedly connected with the lower surface of the transverse limiting plate (253), and the other end of the second spring (255) is fixedly connected with the bottom of the limiting support (254).

4. A home burglar alarm system according to claim 3, wherein said limit bracket (254) comprises: vertical plate (2541) and integral connection are in diaphragm (2542) of lower extreme on vertical plate (2541), vertical plate (2541) are worn to locate the through-hole sets up, two diaphragm (2542) are located respectively the upper and lower side of horizontal limiting plate (253), second spring (255) other end with be located horizontal limiting plate (253) below diaphragm (2542) fixed connection.

5. A household burglar alarm system according to claim 4, characterized in that said pepper water spraying device (4) comprises:

the mounting plate (41) is fixedly mounted on the partition wall through a second screw (42) and is positioned above the door body (3), and a clamping block (411) is integrally connected to the side end, far away from the partition wall, of the mounting plate (41);

the storage box (43), a clamping groove (431) is formed in the outer wall of the storage box (43), the clamping block (411) is clamped and fixed with the clamping groove (431), the top end of the storage box (43) is open, and an infrared sensor (44) is arranged at the bottom end of the storage box (43);

the box cover (45) is hinged with the open end of the storage box (43);

the water pump (46), the water pump (46) is installed at the bottom of the storage box (43), the water inlet of the water pump (46) is communicated with the interior of the storage box (43), the water outlet of the water pump (46) is connected with a spray head (48) through a conduit (47), and the spray head (48) is arranged in a downward direction;

wherein the infrared sensor (44) and the water pump (46) are both electrically connected with the controller (6).

6. A home burglar alarm system according to claim 5, wherein a monitor (7) is provided on top of an inner wall of said room body (1), said monitor (7) being electrically connected to said controller (6).

7. A household burglar alarm system according to claim 6, wherein a lighting lamp (8) and a light sensor (9) are mounted on a ceiling of said room body (1), and said lighting lamp (8) and said light sensor (9) are electrically connected to said controller (6).

8. The household burglar alarm system according to claim 7, wherein a containing cavity is formed in an inner wall of the house body (1), a power supply device (10) is arranged in the containing cavity, and the power supply device (10) is electrically connected with a main power line of the alarm (5), the controller (6), the control switch (22), the infrared sensor (44), the water pump (46), the monitor (7), the illuminating lamp (8) and the light sensor (9).

9. A household burglar alarm system according to claim 8, characterized in that said power supply means (10) comprises:

the backup battery (101), the backup battery (101) is fixedly installed in the accommodating cavity, and the backup battery (101) is electrically connected with the external power supply;

the electromagnet (102), the said electromagnet (102) is fixedly mounted on the upper chamber wall of the said accommodating cavity, and connect electrically with said external power;

the upper surface of the iron plate (103) is electromagnetically connected with the lower surface of the electromagnet (102), a rubber layer is adhered to the lower surface of the iron plate (103), two contact blocks (104) are fixedly installed on the lower surface of the rubber layer at intervals, and the two contact blocks (104) are respectively and electrically connected with the positive electrode and the negative electrode of a total power line of each electric device in the system;

the shielding door (105) is arranged on the opening position of the accommodating cavity;

when the external power supply is powered off, the two contact blocks (104) are respectively electrically connected with the positive electrode and the negative electrode of the standby battery (101).

10. The household burglar alarm system according to claim 9, wherein both sides of the upper surface of said iron plate (103) are fixedly connected to one end of a third spring (106), and the other end of said third spring (106) is fixedly connected to the upper cavity wall of said accommodating cavity.

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