CN211086645U

CN211086645U - Networking type infrared detector based on L oRa wireless communication

Info

Publication number: CN211086645U
Application number: CN201922398342.4U
Authority: CN
Inventors: 丁建宏; 杨晓涛
Original assignee: Zhuhai Anjubao Electronic Technology Co ltd
Current assignee: Zhuhai Anjubao Electronic Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-24
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a networking type infrared detector based on L oRa wireless communication, real-time networking reports equipment state and site conditions, and overall arrangement simple to operate, stable performance, it includes shell and circuit board, its characterized in that, integrated control chip on the circuit board and the infrared detection circuit, L oRa communication module, alarm indicator, communication status indicator and the function selection wire jumper that are connected with it respectively, infrared detection circuit includes pyroelectric infrared sensor, and this pyroelectric infrared sensor is relative with the fresnel lens that sets up the shell front side, the function selection wire jumper is including the sensitivity selection wire jumper that is used for switching high/low detection sensitivity, the intelligent power saving wire jumper that is used for energy consumption mode switching to and be used for wireless network to learn the wireless self-study wire jumper who pairs.

Description

Networking type infrared detector based on L oRa wireless communication

Technical Field

The utility model relates to a networking type infrared detector based on L oRa wireless communication.

Background

The infrared detector is widely used for safety precaution early warning in places such as houses, factory buildings, shops, warehouses and office buildings, the situation in a defense range is known through detection of heat source bodies such as human bodies, and human body movement within the defense time is alarmed. The existing infrared detector is connected with an upper security system through field wiring, the layout of the infrared detector depends on the field wiring, the infrared detector is not flexible enough, and the wiring is troublesome. If a wireless network is considered instead of a wired connection, technical problems in terms of networking, power consumption, and the like need to be considered.

SUMMERY OF THE UTILITY MODEL

Based on the problem mentioned in the background art, the utility model provides a networking type infrared detector based on L oRa wireless communication reports equipment status and on-the-spot condition in real-time networking, and overall arrangement simple to operate, the stable performance, its concrete technical content as follows:

a networking type infrared detector based on L oRa wireless communication comprises a shell and a circuit board, wherein a control chip, an infrared detection circuit, a L oRa communication module, an alarm indicator light, a communication state indicator light and a function selection jumper wire are integrated on the circuit board, the infrared detection circuit, the L oRa communication module, the alarm indicator light, the communication state indicator light and the function selection jumper wire are respectively connected with the circuit board, the infrared detection circuit comprises a pyroelectric infrared sensor, the pyroelectric infrared sensor is opposite to a Fresnel lens arranged on the front side of the shell, the function selection jumper wire comprises a sensitivity selection jumper wire used for switching high/low detection sensitivity, an intelligent power-saving jumper wire used for switching energy consumption modes, and a wireless self-learning jumper wire used for wireless network self.

In one or more embodiments of the present invention, the function selecting jumper further includes an indicator jumper for controlling the indicator lamp to be turned on/off.

In one or more embodiments of the present invention, a battery seat is disposed on the circuit board, the housing has an opening opposite to the battery seat, and the opening is sealed by the battery cover.

In one or more embodiments of the present invention, the power circuit of the circuit board includes a common mode inductor L3, magnetic beads L4 and L5, a fuse F1, a transient diode TVS, a filter capacitor C2 and a filter capacitor C6, the magnetic bead L4 is connected to the negative terminal of the battery, the magnetic bead L5 is connected to the positive terminal of the battery, the two terminals of the magnetic bead L are connected to the common mode inductor L3, and the transient diode TVS, the filter capacitor C2 and the filter capacitor C6 are coupled to the output terminal of the power circuit.

In one or more embodiments of the present invention, the power supply circuit of the L oRa communication module includes inductors L1 and L2, tantalum capacitor C1, electrolytic capacitor C12, and capacitor C11, the tantalum capacitor C1, electrolytic capacitor C12, and capacitor C11 are connected in parallel, one end of the inductor L1 is connected to the output end of the power supply circuit of the circuit board, the other end of the inductor is connected to the tantalum capacitor C1, and the tantalum capacitor C1 is grounded via the inductor L2.

In one or more embodiments of the present invention, the infrared detection circuit includes operational amplifiers U1A, U1B, U2A and U2B, and diodes D3 and D4, the operational amplifiers U1A and U1B are cascaded, the positive phase terminal of the operational amplifier U1A is connected to the pyroelectric sensor, the output terminal thereof is connected to the negative phase terminal of the operational amplifier U1B, the negative phase terminal of the operational amplifier U2A is connected to the positive phase terminal of the operational amplifier U2B, the output terminal of the operational amplifier U1B is connected to the negative phase terminal of the operational amplifier U2A, the output terminal of the operational amplifier U2A is connected to the anode of the diode D4, the output terminal of the operational amplifier U2B is connected to the anode of the diode D3, and the cathodes of the diodes D3 and D4 are merged for output.

In one or more embodiments of the present invention, the casing is provided with a tamper switch, and the tamper switch is connected to the control chip.

The beneficial effects of the utility model are that realize the networking based on L oRa wireless communication, get rid of the puzzlement of traditional wiring, and L oRa wireless communication distance is far away, wide cover, make installation and overall arrangement very nimble, the detection part adopts pyroelectric infrared sensor, good sensitivity, stable operation, and still can select the jumper height through sensitivity, low sensitivity, be fit for selecting different sensitivity mode for different scenes, let the detection condition of feedback more press close to reality, realize the detection of preferred and prevent mistake newspaper performance, in addition, can set for actual power mode through intelligent power saving jumper, be applicable to the environment that triggers often manly if the short circuit, the detector can be according to the alarm time of detection number of times automatic increase every, reduce the battery power consumptive, solve wireless device power consumption problem, the order adopts two sections 3A battery power supplies available more than 1 year, the utility model discloses can extensively be used for the safety precaution early warning in places such as house, factory building, shop, warehouse, office building.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the power supply circuit of the present invention.

Fig. 3 is a schematic diagram of the control chip and its peripheral circuit according to the present invention.

Fig. 4 is a schematic diagram of the infrared detection circuit of the present invention.

Fig. 5 is a schematic diagram of an L oRa communication module according to the present invention.

Fig. 6 is a schematic diagram of the function selecting jumper of the present invention.

Fig. 7 is a schematic diagram of the anti-prying switch of the present invention.

Detailed Description

The scheme of the present application is further described below with reference to the accompanying drawings, 1 to 7:

a networking type infrared detector based on wireless communication comprises a shell 1 and a circuit board 2, a control chip, an infrared detection circuit, a communication module, an alarm indicator light 3, a communication state indicator light 4 and a function selection jumper wire are integrated on the circuit board 2, the infrared detection circuit comprises a pyroelectric infrared sensor, the pyroelectric infrared sensor is opposite to a Fresnel lens 5 arranged on the front side of the shell 1, the function selection jumper wire comprises a sensitivity selection jumper wire used for switching high/low detection sensitivity, an intelligent power-saving jumper wire used for switching energy consumption modes, a wireless self-learning jumper wire used for self-learning pairing of a wireless network and an indicator light jumper wire used for controlling the turning on/off of the indicator light, a battery seat 6 is arranged on the circuit board 2, the shell 1 is provided with an opening facing to the battery seat 6, the opening is sealed by a battery cover, a specific power circuit of the circuit board 2 comprises a common-mode inductor 03, magnetic beads 14 and 25, a fuse F, a transient-state diode S, a filter capacitor C and a C, the magnetic bead 34 is connected with a battery cathode terminal, a magnetic bead 45 is connected with a battery anode terminal of a transient-type inductor 3, a power supply circuit is connected with a power amplifier, a power supply circuit of a power amplifier, a power supply circuit, a power amplifier, a capacitance operational amplifier is connected with a capacitance operational amplifier, a capacitance amplifier is connected with a capacitance operational amplifier, a capacitance amplifier.

Description of the working principle:

1) the sensitivity selection jumper JMP 1: the short circuit is low-sensitivity and suitable for complex environment, and the disconnection is high-sensitivity and suitable for occasions with high accuracy.

2) The intelligent power saving jumper JMP 2: the short circuit is suitable for an environment which is frequently triggered by people, the detector can automatically increase the alarm time of each time according to the detection times, and the power consumption of a battery is reduced; the short circuit is not suitable for places with fewer people.

In the normal mode, the alarm is triggered once in 2min (minutes), if the alarm is triggered for the first time, the alarm can be triggered again after waiting for two minutes, and in the period, the movement of people or objects cannot be detected in the monitoring area of the detector; the alarm is triggered in a 30s (second) overlapping mode in the power saving mode, the duration is up to 10 minutes, if the detector is triggered for the first time, if the detector is triggered again, the detector needs to wait for 30 seconds before being triggered again, if the detector is triggered for the third time, the detector needs to wait for 60 seconds before being triggered, and the like.

3) And the indicator light jumper JMP3 is used for controlling the L ED indicator light, does not influence the work of the detector, and turns on the short-circuit light and turns off the turn-off light.

4) The wireless self-learning jumper JMP 4: the short circuit is in a self-learning mode, the disconnection mode is in a normal working mode, the short circuit is needed during self-learning, the self-learning is successful after the short circuit, and the lights can flash alternately in red and green. Note that the short circuit cannot be realized during operation, otherwise the detector cannot normally operate, and the power consumption is increased.

5) The alarm indicator L ED1 is an infrared L ED lamp, the lamp is turned on for about 15s when the alarm indicator is powered on, the detector is in a self-checking state, and when a person enters a detection area, the red lamp is turned on for 3s, the detector detects an invader and gives an alarm.

6) The communication state indicator light L ED2 is a green L ED light, the detector is in a communication state when the green light flashes, and the green light is turned off after the communication is finished.

When an alarm is given, the red light and the green light are in an alternate flashing state, and if only the red light is on, the detector and the management host are not communicated or the code is not successfully matched.

7) Wireless learning code-matching description

When the self-learning is successful, the traffic lights can flash alternately together to indicate the success of learning. After the self-learning is successful, the wireless self-learning jumper JMP4 is disconnected, and the detector is powered off and restarted to enter a normal working mode. The wireless self-learning jumper JMP4 cannot be short-circuited under normal work, otherwise, the detector cannot work normally, and power consumption is increased.

8) Description of alarm testing

After the detector is powered on, the detector self-checking is completed (the red light flashes for 15s and enters a normal working state), the detector is moved to a detector monitoring area to be triggered, when the red light is normally on for 3s, and simultaneously, the green L ED slowly flashes to indicate that L oRa wireless transmission is in the process of triggering alarm, the alarm is successful (at this time, if an alarm management host needs to be in a defense state and an alarm prompt of the management host should be normally received), if the detector wants to be triggered again after alarm, the detector leaves the monitoring area for 2min and then enters the monitoring area to be triggered, and so on.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.

Claims

1. A networking type infrared detector based on L oRa wireless communication comprises a shell and a circuit board, and is characterized in that a control chip, an infrared detection circuit, a L oRa communication module, an alarm indicator light, a communication state indicator light and a function selection jumper wire are integrated on the circuit board, the infrared detection circuit, the alarm indicator light, the communication state indicator light and the function selection jumper wire are respectively connected with the control chip, the infrared detection circuit comprises a pyroelectric infrared sensor, the pyroelectric infrared sensor is opposite to a Fresnel lens arranged on the front side of the shell, the function selection jumper wire comprises a sensitivity selection jumper wire used for switching high/low detection sensitivity, an intelligent power-saving jumper wire used for switching energy consumption modes, and a wireless self-learning jumper wire used for wireless network self-learning pairing.

2. The Internet-based L oRa wireless communication infrared detector as claimed in claim 1, wherein the function selection jumper further comprises an indicator light jumper for controlling on/off of an indicator light.

3. The L oRa networking type infrared detector based on wireless communication according to claim 1 or 2, wherein the circuit board has a battery holder, the housing has an opening opposite to the battery holder, and the opening is sealed by a battery cover.

4. The L oRa wireless communication-based networking type infrared detector as claimed in claim 3, wherein the power circuit of the circuit board comprises a common mode inductor L3, magnetic beads L4 and L5, a fuse F1, a transient diode TVS, filter capacitors C2 and C6, the magnetic bead L4 is connected to the negative terminal of the battery, the magnetic bead L5 is connected to the positive terminal of the battery, both terminals of which are connected with the common mode inductor L3, and the transient diode TVS, the filter capacitors C2 and C6 are connected to the output terminal of the power circuit.

5. The internet-type infrared detector based on L oRa wireless communication of claim 1 or 2, wherein the power supply circuit of the L oRa communication module includes inductors L1 and L2, a tantalum capacitor C1, an electrolytic capacitor C12, and a capacitor C11, the tantalum capacitor C1, the electrolytic capacitor C12, and the capacitor C11 are connected in parallel, one end of the inductor L1 is connected to the output end of the power circuit of the circuit board, the other end is connected to the tantalum capacitor C1, and the tantalum capacitor C1 is grounded via the inductor L2.

6. L oRa networking type infrared detector based on wireless communication according to claim 1 or 2, wherein the infrared detection circuit comprises operational amplifiers U1A, U1B, U2A and U2B, and diodes D3 and D4, the operational amplifiers U1A and U1B are connected in cascade, the positive phase terminal of the operational amplifier U1A is connected with the pyroelectric sensor, the output terminal thereof is connected with the negative phase terminal of the operational amplifier U1B, the negative phase terminal of the operational amplifier U2A is connected with the positive phase terminal of the operational amplifier U2B, the output terminal of the operational amplifier U1B is connected with the negative phase terminal of the operational amplifier U2A, the output terminal of the operational amplifier U2A is connected with the anode of the diode D4, the output terminal of the operational amplifier U2B is connected with the anode of the diode D3, and the cathodes of the diodes D3 and D4 are merged for output.

7. The L oRa wireless communication-based networking type infrared detector of claim 1 or 2, wherein the shell is provided with a tamper switch, and the tamper switch is connected with the control chip.