CN211787468U - Wireless detection device, wireless alarm and wireless alarm system - Google Patents
Wireless detection device, wireless alarm and wireless alarm system Download PDFInfo
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- CN211787468U CN211787468U CN201922450657.9U CN201922450657U CN211787468U CN 211787468 U CN211787468 U CN 211787468U CN 201922450657 U CN201922450657 U CN 201922450657U CN 211787468 U CN211787468 U CN 211787468U
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Abstract
The utility model discloses a wireless detection device, wireless alarm and wireless alarm system, wireless detection device include control module, wireless communication module, signal acquisition module, signal processing module and temperature detection module, and signal processing module's output connection control module's input, signal processing module's input connection signal acquisition module's output, wireless communication module connection control module, and temperature detection module's output is connected with control module's input. The utility model discloses a wireless detection device is through increasing temperature detection module, the temperature variation of the environment that real-time detection wireless detection device is located, and control module is sent the result of temperature variation to temperature detection module, then control module dynamic adjustment wireless detection device's alarm threshold value, avoids wireless detection device because the ambient temperature that locates changes and sensitivity reduces the scheduling problem, improves the rate of accuracy and the stability of reporting to the police.
Description
Technical Field
The utility model belongs to the technical field of the warning detection and specifically relates to a wireless detection device, wireless alarm and wireless alarm system are related to.
Background
With the rapid development of social economy and science and technology, the safety consciousness of people is improved, and anti-theft products play more and more important roles in the life of people and are gradually popularized. The infrared detector plays an increasingly important role in the field of anti-theft intrusion as a means capable of effectively detecting infrared signals of a moving human body.
At present, a wireless infrared detector works by detecting infrared rays emitted by a human body, and the detector collects external infrared radiation and then gathers the external infrared radiation to an infrared sensor. The infrared detector is easily interfered by the external environment temperature, and when the environment temperature of the detection device changes, such as when the environment temperature is close to the human body temperature, the sensitivity and the accuracy of the detector can be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wireless detection device can guarantee that this wireless detection device discernment is accurate according to ambient temperature's change dynamic adjustment temperature contrast threshold value, reduces the misdetection.
The utility model also provides a wireless alarm can avoid appearing false alarm or not reporting to the police situation such as threshold value according to ambient temperature's change dynamic adjustment.
In a first aspect, an embodiment of the present invention provides a wireless detection device, including control module, wireless communication module, signal acquisition module, signal processing module and temperature detection module, the output of signal processing module connects control module's input, signal processing module's input is connected the output of signal acquisition module, wireless communication module connects control module, temperature detection module's output with control module's input is connected.
Further, the temperature detection module comprises a temperature sensor for detecting the ambient temperature of the environment where the wireless detection device is located, and the temperature sensor is one or two of a thermal resistor or a thermocouple.
The utility model discloses wireless detection device has following beneficial effect at least: the utility model discloses a dynamic adjustment can be made according to the ambient temperature change of locating to wireless detecting device, guarantees that detecting device can accurately discern the human body under different temperature environment.
According to the utility model discloses a wireless detecting device of other embodiments, wireless alarm system still includes the mode selection module, the output of mode selection module with control module's input is connected, the mode selection module is used for changing wireless alarm system's operating mode can set for the time interval that control module was awaken up according to user's needs, also can set wireless detecting device to operating condition or maintenance state.
According to the utility model discloses a wireless detection device of other embodiments, wireless alarm system still includes low pressure detection module, low pressure detection module's output with control module's input is connected, and low pressure detection module can the real-time supervision power electric quantity size, and when wireless detection device's electric quantity was less than a definite value, outwards sent electric quantity early warning information.
According to the utility model discloses a wireless detection device of other embodiments, wireless alarm system still includes indicating module, indicating module's input is connected control module's output, display module can audio-visually show wireless detection device's operating condition.
According to the utility model discloses a wireless detection device of other embodiments, the signal acquisition module is infrared sensor, infrared sensor is used for gathering and removes infrared signal.
Further, the infrared sensor is one or two of an active infrared sensor or a passive infrared sensor.
In a second aspect, the utility model also provides a wireless alarm, wireless alarm includes above wireless detection device.
The utility model discloses a wireless alarm has following beneficial effect at least: the alarm threshold value can be dynamically adjusted according to the change of the environmental temperature, and the situations of false alarm or no alarm and the like are avoided.
A third aspect, the utility model also provides a wireless alarm system, wireless alarm system includes server and wireless alarm, wireless alarm system includes more than wireless alarm, the server passes through the wireless network mode and receives wireless alarm's information.
Drawings
Fig. 1 is a block diagram of an embodiment of a wireless detection device according to the present invention;
fig. 2 is a block diagram of another embodiment of the wireless detecting device according to the present invention;
fig. 3 is a block diagram of another embodiment of the wireless detecting device according to the present invention;
fig. 4 is a block diagram of another embodiment of the wireless detecting device according to the present invention;
fig. 5 is a schematic circuit diagram of a control module according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a signal acquisition module and a signal processing module according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a wireless communication module according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of an indicating module according to an embodiment of the present invention;
fig. 9 is a schematic circuit diagram of a temperature detection module according to an embodiment of the present invention;
fig. 10 is a specific circuit diagram of the mode selection module according to an embodiment of the present invention;
fig. 11 is a schematic circuit diagram of a low voltage detection module according to an embodiment of the present invention.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 discloses a wireless detection device of an embodiment of the present invention, including control module, wireless communication module, signal acquisition module, signal processing module and temperature detection module, control module's input is connected to signal processing module's output, signal processing module's output is connected to signal processing module's input, and wireless communication module connects control module, and temperature detection module's output is connected with control module's input, and temperature detection module is thermal resistance sensing or thermocouple sensing.
When the signal acquisition module detects a human body movement signal, the signal acquisition module converts the signal into an analog signal and inputs the analog signal into the signal processing module, the signal processing module amplifies or filters the analog signal and then transmits the analog signal to the control module, the control module sends an instruction to the wireless communication module according to the received information, and the wireless communication module sends out an alarm signal through the antenna. The temperature detection module is added in the wireless detection device of the embodiment, the temperature change of the environment where the wireless detection device is located is detected in real time, the temperature detection module sends the temperature change result to the control module, then the control module dynamically adjusts the alarm threshold value of the wireless detection device in a software compensation mode, and the problems that the sensitivity of the wireless detection device is reduced due to the temperature change of the environment where the wireless detection device is located and the like are avoided.
Before the wireless detection device is used, the wireless detection device is electrified, the power supply adopts a DC3V battery, and the wireless detection device is wirelessly connected with a mains supply, so that the space is saved, and the size of the wireless detection device can be reduced.
In some embodiments, referring to fig. 2, the power supply is used to supply power to the wireless alarm system, and the wireless detection device may further include a mode selection module, wherein an output terminal of the mode selection module is connected to an input terminal of the control module. The working mode of the wireless detection device can be changed through the mode selection module, and when the wireless detection device is in a normal working state, the wireless detection device is set to be in an anti-theft protection state; when the wireless detection device needs to be maintained, tested, checked and the like, the wireless detection device is set to be in a detachable state, and alarm cannot be triggered. Through the mode selection module, the device can be prevented from being stolen in an unmanned environment, and a worker can be guaranteed to carry out normal maintenance and nursing on the wireless detection device.
In some embodiments, referring to fig. 3, the power supply is used for supplying power to the wireless alarm system, the wireless detection device may further include a low voltage detection module, the low voltage detection module can detect the power voltage in real time, the output end of the low voltage detection module is connected to the input end of the control module, when the power voltage is smaller than a certain value, namely, when the battery capacity is low, the control module may receive the low voltage signal, and send an instruction to the wireless communication module, the wireless communication module sends the information that the wireless detection device is about to power off to the user through the antenna, so that the user can charge or replace the battery in time, and it is ensured that the wireless detection device can continuously and normally work.
In some embodiments, referring to fig. 4, the power supply is used to supply power to the wireless alarm system, and the wireless detection device may further include an indication module, an input end of the indication module is connected to an output end of the control module, and the indication module is capable of visually displaying an operating condition of the wireless detection device.
Fig. 5 to 11 are specific circuit diagrams of an embodiment in the above embodiment.
Referring to fig. 5, the control module includes a serial port downloader J2, a first capacitor C1, and a single chip microcomputer U2. Wherein, serial port downloader J2's 1 foot is connected 4 feet of singlechip U2, and 3.3V power is connected to serial port downloader J2's 2 feet, and serial port downloader J2's 3 feet ground connection, serial port downloader J2's 4 feet are connected 13 feet of singlechip U2, and serial port downloader J2's 5 feet are connected 12 feet of singlechip U2. One end of the first capacitor C1 is connected with pin 1 of the singlechip U2, and the other end is grounded.
Referring to fig. 5 and 6, in the present embodiment, the signal acquisition module employs an infrared pyroelectric sensor J1, and three pins of the infrared pyroelectric sensor J1 are connected to the signal processing module, wherein 3 pins of the infrared pyroelectric sensor J1 are also grounded.
The signal processing module mainly comprises a first operational amplifier U1A, a second operational amplifier U1B and peripheral circuits. The first-stage amplifying circuit is formed by a first operational amplifier U1A, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; the second-stage amplification circuit is composed of a second operational amplifier U1B, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11, the specific connection relationship between the first-stage amplification circuit and the second-stage amplification circuit is shown in FIG. 6, and a pin 7 of the second operational amplifier U1B is connected with a pin 13 of the singlechip U2. The capacitor in the two-stage amplifying circuit plays a role in filtering, so that the signal processing module outputs a stable direct current signal; the eighth resistor R8 is a thermistor, compensates the temperature in hardware, the resistance value can change according to the change of the environment, and the thermistor can be used for dynamically adjusting the amplification gain of the second-stage amplification circuit, thereby reducing the condition of inaccurate detection caused by extreme weather.
Referring to fig. 5 and 7, the wireless communication module includes a crystal oscillator chip U3, a wireless transmission chip U4, a first inductor L1, a second inductor L2, a third inductor L3, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16 and a seventeenth capacitor C17. The 4 feet, the 2 feet and the 3 feet of the crystal oscillator chip U3 are grounded, the 1 foot is connected with the 1 foot of the wireless transmitting chip U4 and one end of the twelfth capacitor C12, and the other end of the twelfth capacitor C12 is grounded. The 2 feet of the wireless transmitting chip U4 are grounded, the 3 feet are connected with the 8 feet of the singlechip U2, the 4 feet are not connected, the 5 feet are connected with the first inductor L1 and the fifteenth capacitor C15, and the 6 feet are connected with the 3.3V power supply. The thirteenth capacitor C13 and the fourteenth capacitor C14 are connected in parallel, one end of the thirteenth capacitor C13 is connected with the 6 th pin of the wireless transmitting chip U4, and the other end of the thirteenth capacitor C14 is grounded. One end of the first inductor L1 is connected with the 5 pin of the wireless transmitting chip U4, and the other end is connected with a 3.3V power supply. One end of the fifteenth capacitor C15 is connected to the pin 5 of the wireless transmitting chip U4, the other end is connected to one end of the second inductor L2, the third inductor L3 is connected in series with the second inductor L2, and the other end of the third inductor L3 is an antenna interface ANT. One end of a sixteenth capacitor C16 is connected to the second inductor L2 and the third inductor L3, the other end is grounded, one end of a seventeenth capacitor C17 is an antenna interface ANT, and the other end is grounded. The crystal oscillator chip U3 provides a clock signal to the wireless transmitting chip U4. The fifteenth capacitor C15 and the second inductor L2 form a resonant circuit, the sixteenth capacitor C16 and the third inductor L3 form an oscillating circuit, and signals output by the 5 pins of the wireless transmitting chip are processed by the resonant circuit and the oscillating circuit and then transmitted by the antenna ANT, so that information transmission of the wireless detector is realized.
Referring to fig. 5 and 9, the temperature detection module includes a twelfth resistor R12 and a thirteenth resistor R13, and the twelfth resistor R12 is a thermistor. One end of the twelfth resistor R12 is connected with a 3.3V power supply, and the other end of the twelfth resistor R12 is connected with a pin 12 of the single chip microcomputer U2; one end of the thirteenth resistor R13 is connected with the 12 pin of the singlechip U2, and the other end is grounded. When the utility model discloses a when the ambient temperature that wireless detection device located changes, thermistor's resistance changes thereupon, and the 12 feet's of singlechip U2 voltage value also can change, behind the singlechip U2 according to received voltage value, compensates the temperature through software algorithm, avoids leading to the misdetection because of ambient temperature is too high, cross low or too close with human body temperature to improve the accuracy of this embodiment wireless detection device.
Referring to fig. 5 and 8, the indication module includes a power supply BT1, an eighteenth capacitor C18, a nineteenth capacitor C19, a twentieth capacitor C20, a fourteenth resistor R14, a fifteenth resistor R15, a first light emitting diode D1, and a second light emitting diode D2. One end of the eighteenth capacitor C18, the nineteenth capacitor C19 and the twentieth capacitor C20 is connected with the 1 pin and the 3.3V voltage of the power supply BT1, and the other end is grounded and connected with the 2 pin of the power supply BT 1. One ends of a fourteenth resistor R14 and a fifteenth resistor R15 are connected with a pin 1 of a power supply BT1, the other end of the fourteenth resistor R14 is connected with the anode of a first light-emitting diode D1, the other end of a fifteenth resistor R15 is connected with the anode of a second light-emitting diode D2, the cathode of the first light-emitting diode D1 is connected with a pin 2 of a singlechip U2, and the cathode of the second light-emitting diode D2 is connected with a pin 11 of the singlechip U2. The first light-emitting diode D1 is a red diode, the second light-emitting diode D2 is a green diode, the control module sends an instruction to control the on or off of the two light-emitting diodes, and when the wireless detection device works normally, the green diode is normally on; when the wireless detection device gives an alarm, the red diode is normally off, and other states can be set according to user requirements.
Referring to fig. 5 and 10, the mode selection module includes a sixteenth resistor R16, a test key SW1, a seventeenth resistor R17, and a tamper key SW 2. One end of a sixteenth resistor R16 is connected with 3.3V voltage, and the other end of the sixteenth resistor R16 is connected with a pin 3 of the single chip microcomputer U2; one end of the anti-disassembly key SW2 is connected with a pin 3 of the singlechip U2, and the other end of the anti-disassembly key SW2 is grounded. One end of the seventeenth resistor R17 is connected with 3.3V voltage, the other end of the seventeenth resistor R17 is connected with the pin 10 of the single chip microcomputer U2, one end of the test key SW1 is connected with the pin 10 of the single chip microcomputer U2, and the other end of the test key SW1 is grounded. When the wireless detection device of this embodiment is in normal operating condition, prevent tearing open button SW2 and be in closed condition always, if someone wants to dismantle this wireless detection device, prevent tearing open button SW2 and can break off, then singlechip U2's 3 feet do not have voltage signal, singlechip U2 sends the instruction to wireless communication module, and wireless communication module sends alarm information to the user through the antenna. When the staff needs to test or maintain the wireless detection device of this embodiment, press test button SW1, voltage signal is received to singlechip U2's 10 feet, then wireless detection device gets into test state, can not trigger warning etc..
The mode selection module further comprises a single-row pin J3 and an eighteenth resistor R18, wherein a pin 1 of the single-row pin J3 is grounded, a pin 2 is connected with a pin 4 of the single-chip microcomputer U2, a pin 3 is connected with one end of the eighteenth resistor R18, and the other end of the eighteenth resistor R18 is connected with 3.3V voltage. The periodic wake-up time of the wireless alarm system is varied by a single row pin J3 external jumper cap.
Referring to fig. 5 and 11, the low voltage detection module includes a nineteenth resistor R19 and a third diode D3, wherein one end of the nineteenth resistor R19 is connected to a voltage of 3.3V, and the other end is connected to pin 9 of the chip U2; the anode of the third diode D3 is connected to pin 9 of the chip U2, and the cathode of the third diode D3 is grounded. The third diode D3 is a diode for releasing small signals, and can function as a switch, and when the power voltage is less than a certain value, the third diode D3 is turned off.
By the utility model discloses a wireless alarm that wireless detection device constitutes can be according to ambient temperature change dynamic adjustment alarm threshold value to send alarm information to the server through the wireless network mode, improve the accuracy and the stability of alarm.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. The utility model provides a wireless detection device, its characterized in that, includes control module, wireless communication module, signal processing module, indicating module and temperature detection module, the input of control module is connected to signal processing module's output, signal processing module's input is connected the output of signal processing module, wireless communication module connects control module, temperature detection module's output with control module's input is connected, indicating module's input is connected control module's output.
2. The wireless detection device of claim 1, wherein the temperature detection module comprises a temperature sensor configured to detect an ambient temperature of an environment in which the wireless detection device is located.
3. The wireless detection device of claim 2, wherein the temperature sensor is one or both of a thermal resistor or a thermocouple.
4. The wireless detection device of claim 1, further comprising a mode selection module, wherein an output of the mode selection module is connected to an input of the control module, and the mode selection module is configured to change an operation mode of the wireless detection device.
5. The wireless detection device of claim 1, further comprising a low voltage detection module, wherein an output of the low voltage detection module is connected to an input of the control module.
6. The wireless detection device of claim 1, wherein the signal acquisition module is an infrared sensor configured to acquire a mobile infrared signal.
7. The wireless detection device of claim 6, wherein the infrared sensor is one or both of an active infrared sensor and a passive infrared sensor.
8. A wireless alarm comprising a wireless detection device according to any one of claims 1 to 7.
9. A wireless alarm system, the wireless alarm system comprises a server and a wireless alarm, and the wireless alarm system is characterized in that the wireless alarm system comprises the wireless alarm of claim 8, and the server receives the information of the wireless alarm in a wireless network mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450657.9U CN211787468U (en) | 2019-12-27 | 2019-12-27 | Wireless detection device, wireless alarm and wireless alarm system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922450657.9U CN211787468U (en) | 2019-12-27 | 2019-12-27 | Wireless detection device, wireless alarm and wireless alarm system |
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| CN211787468U true CN211787468U (en) | 2020-10-27 |
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| CN201922450657.9U Active CN211787468U (en) | 2019-12-27 | 2019-12-27 | Wireless detection device, wireless alarm and wireless alarm system |
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