CN210609135U

CN210609135U - Wireless transmission radio circuit with distress effect

Info

Publication number: CN210609135U
Application number: CN201922370294.8U
Authority: CN
Inventors: 黄伟; 王头明; 朱跃辉
Original assignee: Shenzhen Weixun Electronic Co Ltd
Current assignee: Shenzhen Weixun Electronic Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-05-22
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to the technical field of radio, in particular to a wireless transmission radio circuit with a distress call effect, which comprises a trigger switch arranged on the radio panel, a switch element coupled with the trigger switch, the switching element is responsive to a trigger signal and outputs a switching signal, a frequency generation device is coupled to the switching element, the frequency generating device is used for receiving the switching signal and outputting a frequency signal, the frequency generating device is coupled with a frequency amplifying device, the frequency amplifying device is used for receiving the frequency signal and outputting a frequency amplifying signal, the frequency amplifying device is coupled with a frequency alarm device, the frequency alarm device is used for receiving the frequency amplification signal and outputting a frequency alarm signal for the search and rescue dog to receive, the frequency generating device is powered by a power supply in the radio, and the power supply is coupled with the frequency generating device through a switching element. The survival rate of the disaster-stricken personnel can be improved.

Description

Wireless transmission radio circuit with distress effect

Technical Field

The utility model relates to a radio technical field especially relates to a wireless transmission radio circuit with effect of calling for help.

Background

At present, a special radio for weather forecast is a radio which can be turned on at any time to receive the current weather forecast broadcast, and when disastrous weather happens, a special weather broadcast station can use signals with a certain wavelength to automatically turn on a call, so that a person falling asleep can be awakened by the signals to hear the disastrous weather alarm, and the possibility is provided for taking preventive measures in time.

In real life, various abnormal weathers such as tornado, earthquake or storm snow and other natural disasters often occur, after the natural disasters, missing people often need to be searched and rescued on site in time in the natural disasters, in the existing families with peculiar living environments, in order to reduce the influence possibly caused by severe weather on family buildings and the families, a weather radio is purchased to listen to possibly existing disastrous weather alarms, once the families are subjected to the natural disasters such as the earthquake, the tornado and the like, disaster-suffered people are trapped under damaged houses or trapped between ruins, and under general conditions, the disaster-suffered people send out vibration sound through calling or using tools to enable search and rescue people or rescue dogs to hear sound, so that the search and rescue purposes are achieved.

The above prior art solutions have the following drawbacks: with the lapse of time, under the circumstances of lack of moisture and diet for a long time, the disaster-stricken person hardly makes a sound again, and for this reason, it is not beneficial for the search and rescue personnel or the search and rescue dog to find the disaster-stricken person in time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wireless transmission radio circuit with effect of calling for help solves and is gone up the problem that the personnel of suffering from a disaster under the condition of dehydration for a long time and lack food hardly independently sends the calling for help and makes search and rescue personnel or search and rescue dog find search and rescue personnel fast.

The above object of the present invention can be achieved by the following technical solutions:

a radio transmission radio circuit with a distress effect comprises a trigger switch arranged on a radio panel, a switch element coupled with the trigger switch, a frequency generating device coupled with the switch element and used for receiving a switch signal and outputting a frequency signal, a frequency amplifying device coupled with the frequency generating device and used for receiving a frequency signal and outputting a frequency amplified signal, a frequency alarming device coupled with the frequency amplifying device and used for receiving the frequency amplified signal and outputting a frequency alarming signal received by a search dog, wherein the frequency generating device is powered by a power supply in the radio, the power supply is coupled with the frequency generating device through the switch element, when the switch element is conducted, the frequency generating device sends out a frequency signal.

By adopting the technical scheme, the trigger switch signal is controlled by one button of the radio panel, when the trigger switch is pressed, the switch element receives the trigger signal to be conducted, at the moment, the frequency generating device which is electrified sends out a specific frequency signal, when the frequency amplifying signal receives the frequency signal, the frequency signal is amplified and then transmitted into the frequency alarm device, when the frequency alarm device receives the amplified frequency signal, the specific frequency for the search and rescue dog to hear can be sent out, aiming at the above, when the disaster-suffered person presses the button of the radio, the appointed frequency can be output, so that an powerless rescue mode can be replaced, and the search and rescue efficiency of the search and rescue dog and the search and rescue person can be improved.

The utility model discloses further set up to: the switching element comprises a bjt Q1 and a transistor Q2, the collector of the bjt Q1 is coupled to the trigger switch, the emitter is grounded, the collector is coupled to the base of the transistor Q2, the emitter of the transistor Q2 is coupled to the power supply, and the collector of the transistor Q2 is coupled to the frequency generator.

By adopting the technical scheme, the arranged bipolar junction transistors Q1 and Q2 belong to switching elements, and are low in price, wide in application range and capable of effectively reducing cost.

The utility model discloses further set up to: the frequency generating device is an inverter, the input end of the inverter is grounded, and the output end of the inverter is coupled to the frequency amplifying device.

By adopting the technical scheme, the arranged inverter can send out 25KHZ square waves under the condition of electrification, and the trigger switch can be timely responded to the square waves so as to output frequency signals, so that the efficiency is effectively improved.

The utility model discloses further set up to: the power supply end of the frequency generating device is connected with a capacitor C4 in parallel, one end of the capacitor C4 is coupled with the power supply end of the inverter, and the other end of the capacitor C4 is grounded.

By adopting the technical scheme, the arranged capacitor C4 plays a role in filtering and stabilizing conversion, and meanwhile, the power supply of the frequency generation device is conveniently and stably connected.

The utility model discloses further set up to: the frequency amplifying device is a triode Q3, the base of the triode Q3 is coupled with the 6 feet of the frequency generating device, the emitter is grounded, and the collector is coupled with the frequency alarming device.

Adopt above-mentioned technical scheme, the triode Q3 that sets up can improve the square waveform amplitude of receiving, and the contrast lacks triode Q3, can effectively improve the driving capability.

The utility model discloses further set up to: the frequency alarm device comprises an inductor L1, a buzzer and a power supply, wherein the middle section of the inductor L1 is coupled to the collector of the triode Q3, the head end of the inductor L1 is coupled to the power supply, the tail end of the inductor L1 is coupled to the buzzer, and the other end of the buzzer is coupled to the power supply.

By adopting the technical scheme, the set inductor can stabilize the circuit, thereby protecting the buzzer.

The utility model discloses further set up to: a resistor R1 is connected between the emitter and the base of the triode Q2.

By adopting the technical scheme, when the temperature rises, the conducting voltage of the base of the triode Q2 is reduced and is easy to be interfered, and after the resistor R1 is arranged, the voltage of the base is constant, so that the anti-interference capability can be improved, meanwhile, the threshold voltage can be raised, and the requirement on the low level voltage of a preceding stage is reduced.

To sum up, the utility model discloses a beneficial technological effect does:

through the mutual cooperation of the trigger switch, the phase inverter, the switch element, the frequency amplification device and the buzzer, after the trigger switch of the radio is pressed down, the square wave of 25KHZ is output by the phase inverter to enable the buzzer to continuously send out, the situation that the distress call sound is weakened due to the fact that no food is supplied for a long time for disaster victims is compared, the distress call of the rescue personnel can be effectively replaced, and therefore the rescue dog which gives out 25KHZ frequency training can quickly find the rescue personnel, and the survival rate of the disaster victims is further improved.

Drawings

Fig. 1 is a schematic circuit diagram of the frequency generating device and the buzzer on the radio of the present invention.

Reference numerals: 1. a switching element; 2. a frequency generating device; 3. a frequency alarm device; 31. a buzzer; 4. the switch is triggered.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A wireless transmission radio circuit with a distress effect, as shown in FIG. 1, includes a trigger switch 4 coupled to a radio panel, which can be regarded as a push button, and a switch element 1 coupled to the trigger switch 4, in this embodiment, the switch element 1 includes a BJT Q1 and a transistor Q2, a collector of the BJT Q1 is coupled to the trigger switch 4, an emitter thereof is grounded, a collector thereof is coupled to a base of a transistor Q2 via a resistor R2, and an emitter thereof is coupled to a power supply, wherein the transistor Q2 is coupled to the power supply. In this embodiment, the power source is a lithium battery in the radio, which supplies power to the radio panel at the same time, the frequency generator 2 is coupled to the collector of the transistor Q2, the resistor R1 is connected between the emitter and the base of the transistor Q2, and the resistor R2 has a resistance of 10K and the resistor R1 has a resistance of 100K.

The frequency generation device 2 is an inverter and is of a type HEF4069UB, a collector of a transistor Q2 is coupled to a positive power supply VDD of the frequency generation device 2, that is, a pin 14 of the frequency generation device 2 is further connected with a capacitor C4, the other end of the capacitor C4 is grounded, a pin 1 of the frequency generation device 2 is coupled with a capacitor C1, the other end of the capacitor C1 is grounded, a pin 2 of the frequency generation device 2 is connected with a resistor R4, the other end of the resistor R4 is connected with a resistor R3, the other end of the resistor R3 is coupled to the pin 1 of the frequency generation device 2, a pin 3 of the frequency generation device 2 is coupled to the pin 2 of the frequency generation device 2, a pin 4 of the frequency generation device 2 is coupled with a capacitor C2, the other end of the capacitor C2 is coupled to a connection point of the resistor R3 and the resistor R4, and a pin 5 of the frequency generation.

In this embodiment, the values of the capacitor C1 and the capacitor C2 are 5PF and 200PF, respectively, and the values of the resistor R3 and the resistor R4 are 470K and 56K, respectively, in this embodiment, when the transistor Q2 is turned on, the frequency generator 2 is powered up, and a square wave signal of 25KHZ is output at 6 pins.

The pin 7 of the frequency generating device 2 is grounded, the pin 6 is coupled with a frequency amplifying device through a resistor R6, the frequency amplifying device is a triode Q3, the base electrode of the triode Q3 is coupled with the resistor R6, the emitter electrode is grounded, the collector electrode is coupled with the frequency alarming device 3, in addition, a resistor R7 is coupled on the connection point between the resistor R6 and the base electrode of the triode Q3, and the other end of the resistor R7 is grounded.

The frequency alarm device 3 includes an inductor L1, a buzzer 31 and a power supply, wherein a middle section of the inductor L1 is coupled to a collector of the transistor Q3, a head end of the inductor L1 is coupled to the power supply, a tail end of the inductor L1 is coupled to the buzzer 31, and the other end of the buzzer 31 is coupled to the power supply.

The implementation principle is as follows: when a person in disaster presses the trigger switch 4 on the radio, the trigger switch 4 outputs a high level signal to turn on the bipolar junction transistor Q1, when the bipolar junction transistor Q1 is turned on, the base of the triode Q2 is grounded, at the moment, the triode Q2 is turned on, the power supply supplies power to the frequency generation device 2, so that the frequency generation device 2 outputs a square wave signal of 25KHZ, the signal is amplified by the triode Q3, the buzzer 31 outputs a signal of 25KHZ, and when a search and rescue dog which trains with fixed frequency (such as 25 KHZ) hears the signal, the search and rescue person can be brought to quickly find the person in disaster, thereby improving the survival rate of the person in disaster.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A radio transmission radio circuit with a distress effect is characterized by comprising a trigger switch (4) arranged on a radio panel, a switch element (1) coupled with the trigger switch (4), wherein the switch element (1) responds to a trigger signal and outputs a switch signal, a frequency generation device (2) is coupled with the switch element (1), the frequency generation device (2) is used for receiving the switch signal and outputting a frequency signal, a frequency amplification device is coupled with the frequency generation device (2), the frequency amplification device is used for receiving the frequency signal and outputting a frequency amplification signal, a frequency alarm device (3) is coupled with the frequency amplification device, the frequency alarm device (3) is used for receiving the frequency amplification signal and outputting a frequency alarm signal for receiving a search and rescue dog, and the frequency generation device (2) is powered by a power supply in the radio, the power supply is coupled to a frequency generating device (2) via a switching element (1), and the frequency generating device (2) emits a frequency signal when the switching element (1) is turned on.

2. The circuit of claim 1, wherein the switching element (1) comprises a bjt Q1 and a transistor Q2, the collector of the bjt Q1 is coupled to the trigger switch (4), the emitter of the bjt Q1 is coupled to ground, the collector of the bjt Q2 is coupled to the base of the transistor Q2, the emitter of the transistor Q2 is coupled to the power supply, and the collector of the transistor Q2 is coupled to the frequency generator (2).

3. A radio transmission circuit with a distress effect according to claim 2, wherein the frequency generating device (2) is an inverter, the input terminal of the inverter is connected to ground, and the output terminal of the inverter is coupled to the frequency amplifying device.

4. A radio with distress call effect according to claim 3, wherein the power supply terminal of the frequency generating device (2) is connected in parallel with a capacitor C4, one terminal of the capacitor C4 is coupled to the power supply terminal of the inverter, and the other terminal is grounded.

5. The radio circuit with distress function according to claim 3, wherein the frequency amplifying device is a transistor Q3, the base of the transistor Q3 is coupled to pin 6 of the frequency generating device (2), the emitter is grounded, and the collector is coupled to the frequency alarm device (3).

6. The radio circuit with distress function according to claim 5, wherein the frequency alarm device (3) comprises an inductor L1, a buzzer (31), and a power supply, wherein a middle section of the inductor L1 is coupled to a collector of the transistor Q3, a head end of the inductor L1 is coupled to the power supply, a tail end of the inductor L1 is coupled to the buzzer (31), and the other end of the buzzer (31) is coupled to the power supply.

7. The radio circuit with distress call effect as claimed in claim 2, wherein a resistor R1 is connected between the emitter and the base of the transistor Q2.