CN214756311U - Audio signal receiving equipment with voltage self-checking function and data transmission radio system - Google Patents
Audio signal receiving equipment with voltage self-checking function and data transmission radio system Download PDFInfo
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- CN214756311U CN214756311U CN202120802141.0U CN202120802141U CN214756311U CN 214756311 U CN214756311 U CN 214756311U CN 202120802141 U CN202120802141 U CN 202120802141U CN 214756311 U CN214756311 U CN 214756311U
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Abstract
The utility model discloses an audio signal receiving equipment and number biography electric platform system of voltage self-checking. In the audio signal receiving equipment with the voltage self-checking function, a power supply module is connected with an energy storage power supply and an MCU (microprogrammed control unit) and used for supplying power to the energy storage power supply according to a control signal of the MCU; the energy storage power supply is connected with the power amplification module and the MCU and used for supplying power to the power amplification module according to the control signal of the MCU; the voltage detection module is connected with the energy storage power supply, the power amplification module and the MCU and is used for detecting a positive terminal voltage signal value of the energy storage power supply and comparing the positive terminal voltage signal value with a first preset threshold value and a second preset threshold value; if the voltage signal value of the positive electrode terminal is greater than a first preset threshold value, a first voltage control signal for controlling the power supply module to be disconnected is sent to the MCU; and if the voltage signal value of the positive electrode terminal is smaller than a second preset threshold value, sending a second voltage control signal for controlling the power amplification module to be disconnected to the MCU. The energy storage power supply is prevented from being overcharged or overdischarged, and the use safety of the equipment is improved.
Description
Technical Field
The utility model relates to an audio signal receiving equipment and number biography electric platform system of voltage self-checking.
Background
In the data transmission radio station system for emergency early warning, the audio signal transmitting equipment controls the audio signal receiving equipment to work through audio signals, and the purpose of remotely controlling and broadcasting emergency early warning information or sending warning lamps and warning information is achieved. Because the audio signal receiving equipment is generally arranged in a field environment, the power supply of the audio signal receiving equipment charges the energy storage power supply of the audio signal receiving equipment by converting clean energy such as wind energy, solar energy and the like into electric energy, and then the energy storage power supply supplies power to the power utilization modules of the audio signal receiving equipment, such as a power amplification module, a warning lamp, an alarm and the like. However, the voltage of the power supply is unstable due to poor stability of wind energy, solar energy and other energy sources, and if the voltage of the power supply is too high, the energy storage power supply is overcharged, so that the electricity utilization safety of the energy storage power supply is influenced; moreover, because the power amplifier module of the audio signal receiving device has a large power, when the power amplifier module, the warning lamp and the electric module for the warning lamp are powered, the discharging current of the energy storage power supply is much larger than the charging current, if the power consumption of the energy storage power supply is too large, the energy storage power supply is over-discharged, the current of the power amplifier module, the electric module for the warning lamp and the electric module for the warning lamp is too large, the heat productivity of the electric module is increased, and the damage of the electric module or the influence on the use safety and the service life of the electric module are caused.
SUMMERY OF THE UTILITY MODEL
In view of the technical defects and technical drawbacks existing in the prior art, embodiments of the present invention provide an audio signal receiving apparatus and a digital radio station system for voltage self-test, which overcome the above problems or at least partially solve the above problems.
The embodiment of the utility model provides an audio signal receiving equipment of voltage self-checking, include: the power supply module, the micro control unit MCU, the energy storage power supply, the power amplification module and the voltage detection module;
the power supply module is connected with the energy storage power supply and the MCU and used for supplying power to the energy storage power supply according to a control signal of the MCU;
the energy storage power supply is connected with the power amplification module and the MCU and used for supplying power to the power amplification module according to the control signal of the MCU;
the voltage detection module is connected with the energy storage power supply, the power amplification module and the MCU and is used for detecting a voltage signal value of a positive terminal of the energy storage power supply and comparing the voltage signal value of the positive terminal with a first preset threshold and a second preset threshold respectively; if the voltage signal value of the positive terminal is greater than the first preset threshold value, sending a first voltage control signal for controlling the power supply module to be disconnected to the MCU; and if the positive terminal voltage signal value is smaller than the second preset threshold value, sending a second voltage control signal for controlling the power amplifier module to be disconnected to the MCU.
In one embodiment, the voltage detection module may include: the voltage control circuit comprises a voltage control signal switch, a first reference voltage modulation circuit, a second reference voltage modulation circuit and a voltage sampling circuit;
the first reference voltage modulation circuit, the second reference voltage modulation circuit and the voltage control signal switch are respectively connected;
one end of the voltage sampling circuit is connected to the positive end of the energy storage power supply, and the other end of the voltage sampling circuit is connected to the voltage control signal switch;
the voltage sampling circuit is used for collecting the voltage signal value of the positive terminal;
the first reference voltage modulation circuit is used for outputting the first preset threshold value, and the second reference voltage modulation circuit is used for outputting the second preset threshold value;
the voltage control signal switch is used for sending the first voltage control signal to the MCU if the voltage signal value of the positive terminal is greater than the first preset threshold value; and if the voltage signal value of the positive terminal is smaller than the second preset threshold value, sending a second voltage control signal to the MCU.
In one embodiment, the voltage control signal switch may include a first comparator and a second comparator;
the first reference voltage modulation circuit comprises a first resistor, a second resistor and a third resistor;
the first resistor is an adjustable resistor;
the second resistor and the third resistor are connected in series, a common end of the first resistor and the second resistor is connected with a first reference voltage, and a common end of the first resistor and the third resistor is connected with a first input end of the first comparator;
the second reference voltage modulation circuit comprises a fourteenth resistor, a fifteenth resistor and a sixteenth resistor;
the sixteenth resistor is an adjustable resistor;
the fourteenth resistor and the fifteenth resistor are connected in series, a common end of the fourteenth resistor and the sixteenth resistor is connected with a first reference voltage, and a common end of the fifteenth resistor and the sixteenth resistor is connected with a first input end of the second comparator;
the voltage sampling circuit comprises a fifth resistor and a sixth resistor which are connected in series;
one end of the fifth resistor is grounded, one end of the sixth resistor is connected to the power supply module and the energy storage power supply, and the common ends of the fifth resistor and the sixth resistor are respectively connected to the second input ends of the first comparator and the second comparator;
and the output ends of the first comparator and the second comparator are respectively connected with the MCU.
In one embodiment, the first reference voltage modulation circuit may further include a seventh resistor and a second capacitor, and a common terminal of the first resistor and the third resistor is connected to the first input terminal of the first comparator through the seventh resistor; the second capacitor is connected with the third resistor in parallel;
the common end of the fourteenth resistor and the fifteenth resistor is connected to the first input end of the second comparator through the eleventh resistor; the sixth capacitor is connected in parallel with the fifteenth resistor.
In one embodiment, the voltage sampling circuit may further include a fourth resistor, a third capacitor, a fourth capacitor, an eighth resistor, a twelfth resistor, a fifth capacitor, a seventh capacitor, and a thirteenth resistor;
the common end of the fifth resistor and the sixth resistor is connected to the second input end of the first comparator through the eighth resistor; the common end of the fifth resistor and the sixth resistor is connected to the second input end of the second comparator through the twelfth resistor;
the common end of the fifth resistor, the sixth resistor and the eighth resistor is grounded through the fourth resistor, and the fourth capacitor is connected with the fourth resistor in parallel; the common end of the eighth resistor and the second input end of the first comparator is grounded through the third capacitor;
the common end of the fifth resistor, the sixth resistor and the twelfth resistor is grounded through the thirteenth resistor, and the seventh capacitor is connected with the thirteenth resistor in parallel; and the common end of the twelfth resistor and the second input end of the second comparator is grounded through the fifth capacitor.
In one embodiment, the voltage detection module further includes a first capacitor, one end of the first capacitor is connected to the first reference voltage, and the other end of the first capacitor is grounded.
In an embodiment, the audio signal receiving device for voltage self-test further includes: an overheat detection module;
the overheat detection module is connected with the power amplifier module and the MCU respectively and used for detecting the temperature of the power amplifier module and comparing the temperature with a third preset threshold value, and if the detected temperature value of the power amplifier module is greater than the third preset threshold value, a third voltage control signal for controlling the power amplifier module to be disconnected is sent to the MCU.
In one embodiment, the overheat detection module may include: the power amplifier starting and stopping control switch and the seventeenth resistor to the twenty second resistor are connected;
the seventeenth resistor is a variable resistor, and the nineteenth resistor is a temperature variable resistor;
the power amplifier is characterized in that the twentieth resistor and the twenty-first resistor are connected in series, a common end of the seventeenth resistor and the twentieth resistor is connected with a second reference voltage, and a common end of the seventeenth resistor and the twenty-first resistor is connected with a first input end of the power amplifier start-stop control switch;
the eighteenth resistor, the nineteenth resistor and the twenty-second resistor are connected in series, one end of the eighteenth resistor is connected with the second reference voltage, and the common end of the nineteenth resistor and the twenty-second resistor is connected with the second input end of the power amplifier start-stop control switch;
the output end of the power amplifier start-stop control switch is connected with the MCU.
In an embodiment, the nineteenth resistor may be disposed at the heat-emitting end of the power amplifier module.
The embodiment of the utility model provides a still provide a number biography electric platform system, include: the audio signal transmitting device and the audio signal receiving device of the voltage self-test are provided.
The embodiment of the utility model provides an audio signal receiving equipment of voltage self-checking detects the positive terminal voltage of energy storage power respectively through the voltage detection module to when the voltage of energy storage power is greater than first preset threshold value, control the power supply of disconnection power module to the energy storage power through MCU, prevent that the energy storage power from overcharging, cause the energy storage power calorific capacity to rise, make energy storage power temperature and interior pressure sharply increase, lead to positive negative pole material contact short circuit, arouse hidden danger such as explosion, burning, influence the safety in utilization of energy storage power; when the voltage of the energy storage power supply is smaller than a second preset threshold value, the MCU controls the energy storage power supply to be disconnected to the power amplification module, so that the energy storage power supply can be prevented from being overdischarged, the internal pressure of the energy storage power supply is prevented from rising, reversibility of positive and negative active substances is damaged, capacity attenuation of the energy storage power supply is caused, overlarge charging current of the power amplification module can be avoided, the heat productivity of the power amplification module is caused to rise, the power amplification module is burnt or audio frequency distortion is caused, and the use safety and the service life of the power amplification module are influenced.
Drawings
Fig. 1 is a schematic structural diagram of an audio signal receiving device with voltage self-test provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage detection module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voltage control signal switch of the voltage detection module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a specific implementation circuit of the voltage detection module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an audio signal receiving device with voltage self-test according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a specific implementation circuit of the overheat detection module according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to make the purpose, technical solution and advantages of the present invention clearer, the following is a detailed description of various specific embodiments of the audio signal receiving device and the data transmission radio system of the voltage self-checking provided by the embodiments of the present invention.
Example one
The utility model provides an audio signal receiving equipment of voltage self-checking, it is shown with reference to figure 1, include: the power supply module 1, the micro control unit MCU2, the energy storage power supply 3, the power amplifier module 4 and the voltage detection module 5;
the power supply module 1 is connected with the energy storage power supply 3 and the MCU2 and is used for supplying power to the energy storage power supply 3 according to a control signal of the MCU 2;
the energy storage power supply 3 is connected with the power amplification module 4 and the MCU2 and is used for supplying power to the power amplification module 4 according to a control signal of the MCU 2;
the voltage detection module 5 is connected with the energy storage power supply 3, the power amplification module 4 and the MCU 2;
the voltage detection module 5 is configured to detect a positive terminal voltage signal value of the energy storage power supply 3, and compare the positive terminal voltage signal value with a first preset threshold and a second preset threshold; if the positive terminal voltage signal value is greater than the first preset threshold value, sending a first voltage control signal for controlling the power supply module 1 to be disconnected to the MCU 2; and if the positive terminal voltage signal value is smaller than the second preset threshold value, sending a second voltage control signal for controlling the power amplifier module 4 to be disconnected to the MCU 2.
The embodiment of the utility model provides an audio signal receiving equipment of voltage self-checking detects the positive terminal voltage of energy storage power respectively through the voltage detection module to when the voltage of energy storage power is greater than first preset threshold value, control the power supply of disconnection power module to the energy storage power through MCU, prevent that the energy storage power from overcharging, cause the energy storage power calorific capacity to rise, make energy storage power temperature and interior pressure sharply increase, lead to positive negative pole material contact short circuit, arouse hidden danger such as explosion, burning, influence the safety in utilization of energy storage power; when the voltage of the energy storage power supply is smaller than a second preset threshold value, the MCU controls the energy storage power supply to be disconnected to the power amplification module, so that the energy storage power supply can be prevented from being overdischarged, the internal pressure of the energy storage power supply is prevented from rising, reversibility of positive and negative active substances is damaged, capacity attenuation of the energy storage power supply is caused, overlarge charging current of the power amplification module can be avoided, the heat productivity of the power amplification module is caused to rise, the power amplification module is burnt or audio frequency distortion is caused, and the use safety and the service life of the power amplification module are influenced.
In one or some alternative embodiments, referring to fig. 2, the voltage detection module 5 includes: a voltage control signal switch 501, a first reference voltage modulation circuit 502, a second reference voltage modulation circuit 503, and a voltage sampling circuit 504;
the first reference voltage modulation circuit 502, the second reference voltage modulation circuit 503 and the voltage control signal switch 501 are respectively connected;
one end of the voltage sampling circuit 504 is connected to the positive terminal of the energy storage power supply 3, and the other end is connected to the voltage control signal switch 501;
the voltage sampling circuit 504 is configured to collect the positive terminal voltage signal value;
the first reference voltage modulation circuit 502 is configured to output the first preset threshold, and the second reference voltage modulation circuit 503 is configured to output the second preset threshold;
the voltage control signal switch 501 is configured to send the first voltage control signal to the MCU2 if the positive terminal voltage signal value is greater than the first preset threshold; and if the positive terminal voltage signal value is smaller than the second preset threshold value, sending the second voltage control signal to the MCU 2.
In one or some alternative embodiments, the voltage control signal switch 501 may include a first comparator a and a second comparator B. As a specific implementation manner of the embodiment of the present invention, the voltage control signal switch 501 can be implemented by integrating the first comparator a and the second comparator B into the same chip, i.e. by using a dual voltage comparator integrated circuit. For example, referring to fig. 3, the implementation is performed using an LM393 chip. Wherein, 1 foot of LM393 chip is the output of first comparator, 2 feet are the first input of first comparator, 3 feet are the second input of first comparator, 7 feet are the output of second comparator, 6 feet are the first input of second comparator, 5 feet are the second input of second comparator, 4 feet are the common ground terminal of first comparator and second comparator, 8 feet are the supply terminal of first comparator and second comparator.
In one or some alternative embodiments, as shown with reference to fig. 4, in the voltage detection module 5:
the first reference voltage modulation circuit 502 comprises a first resistor R1, a second resistor R2 and a third resistor R3; wherein, the first resistor R1 is an adjustable resistor;
the second resistor R2 and the third resistor R3 are connected in series, the common end of the first resistor R1 and the second resistor R2 is connected with a first reference voltage VCC1, and the common end of the first resistor R1 and the third resistor R3 is connected with the pin 2 of the LM393 chip;
the second reference voltage modulation circuit 503 includes a fourteenth resistor R14, a fifteenth resistor R15, and a sixteenth resistor R16; wherein, the sixteenth resistor R16 is also an adjustable resistor;
the fourteenth resistor R14 and the fifteenth resistor R15 are connected in series, the common end of the fourteenth resistor R14 and the sixteenth resistor R16 is connected with a first reference voltage VCC1, and the common end of the fifteenth resistor R15 and the sixteenth resistor R16 is connected with the pin 6 of the LM393 chip;
the voltage sampling circuit 504 comprises a fifth resistor R5 and a sixth resistor R6 which are connected in series;
one end of the fifth resistor R5 is grounded, one end (i.e., end a in fig. 4) of the sixth resistor R6 is connected to the power supply module 1 and the energy storage power supply 3, and the common ends of the fifth resistor R5 and the sixth resistor R6 are respectively connected to pin 3 and pin 5 of the LM393 chip;
In one or some alternative embodiments, referring to fig. 4, the first reference voltage modulation circuit 502 further includes a seventh resistor R7 and a second capacitor C2, and a common terminal of the first resistor R1 and the third resistor R3 is connected to pin 2 of the LM393 chip through the seventh resistor R7; the second capacitor C2 is connected in parallel with the third resistor R3;
the second reference voltage modulation circuit 503 further includes an eleventh resistor R11 and a sixth capacitor C6, and a common end of the fourteenth resistor R14 and the fifteenth resistor R15 is connected to the pin 6 of the LM393 chip through the eleventh resistor R11; the sixth capacitor C6 is connected in parallel with the fifteenth resistor R15.
In one or some alternative embodiments, referring to fig. 4, the voltage sampling circuit 504 further includes a fourth resistor R4, a third capacitor C3, a fourth capacitor C4, an eighth resistor R8, a twelfth resistor R12, a fifth capacitor C5, a seventh capacitor C7, and a thirteenth resistor R13;
the common end of the fifth resistor R5 and the sixth resistor R6 is connected to the pin 3 of the LM393 chip through the eighth resistor R8; the common end of the fifth resistor R5 and the sixth resistor R6 is connected to the 5 pins of the LM393 chip through the twelfth resistor R12;
the common end of the fifth resistor R5, the sixth resistor R6 and the eighth resistor R8 is grounded through the fourth resistor R4, and the fourth capacitor C4 is connected in parallel with the fourth resistor R4; the common end of the eighth resistor R8 and the pin 3 of the LM393 chip is grounded through the third capacitor C3;
the common end of the fifth resistor R5, the sixth resistor R6 and the twelfth resistor R12 is grounded through the thirteenth resistor R13, and the seventh capacitor C7 is connected in parallel with the thirteenth resistor R13; the common terminal of the twelfth resistor R13 and the 5-pin of the LM393 chip is grounded through the fifth capacitor C5.
In one or some alternative embodiments, referring to fig. 4, the voltage detection module 5 further includes a first capacitor C1, one end of the first capacitor C1 is connected to the first reference voltage VCC1, and the other end is connected to ground.
In one or some alternative embodiments, referring to fig. 5, the audio signal receiving device for voltage self-test further includes: an overheat detection module 6;
the overheat detection module 6 is connected to the power amplifier module 4 and the MCU2 respectively, and is configured to detect a temperature of the power amplifier module 4, compare the detected temperature with a third preset threshold, and send a third voltage control signal to the MCU2 to control the power amplifier module 4 to be disconnected if the detected temperature of the power amplifier module 4 is greater than the third preset threshold.
The embodiment of the utility model provides an in, because audio signal receiving equipment sets up in field environment, be not convenient for artifical control and maintenance, consequently, in order to avoid because the short circuit takes place among the power amplifier module or because the rising of ambient temperature arouses the inside intensification of power amplifier module too high, influence audio signal receiving equipment's safety in utilization, detect the temperature of power amplifier module through overheated detection module, when the transmitting terminal temperature of power amplifier module is too high, in time cut off the power amplifier module power supply, make the power amplifier module withdraw from the operation, guarantee audio signal receiving equipment's other power consumption modules, including warning light, alarm etc. can normal operating.
In one or some alternative embodiments, referring to fig. 6, the overheat detection module 6 includes: a power amplifier start-stop control switch, a seventeenth resistor R17 to a twenty-second resistor R22.
In the embodiment of the present invention, the power amplifier start/stop control switch may be a voltage comparator, and as a specific implementation manner of the embodiment of the present invention, as shown in fig. 6, the power amplifier start/stop control switch may also adopt the LM393 chip described above; wherein, 1 foot of LM393 chip is the power amplifier and opens the output that stops control switch in fig. 6, and 2 feet are the power amplifier and open the first input that stops control switch, and 3 feet are the power amplifier and open the second input that stops control switch, and 4 feet are the power amplifier and open the earthing terminal that stops control switch, and 8 feet are the power amplifier and open the power supply terminal that stops control switch.
The seventeenth resistor R17 is a variable resistor, and the nineteenth resistor R19 is a temperature-variable resistor;
the twentieth resistor R20 and the twenty-first resistor R21 are connected in series, the common end of the seventeenth resistor R17 and the twentieth resistor R20 is connected with a second reference voltage VCC2, and the common end of the seventeenth resistor R17 and the twenty-first resistor R21 is connected with the 2-pin of the power amplifier start-stop control switch;
the eighteenth resistor R18, the nineteenth resistor R19 and the twenty-second resistor R22 are connected in series, one end of the eighteenth resistor R18 is connected with the second reference voltage VCC2, and the common end of the nineteenth resistor R19 and the twenty-second resistor R22 is connected with the 3 pins of the power amplifier start-stop control switch;
and a pin 1 (namely, a terminal D in fig. 6) of the power amplifier start-stop control switch is connected with the MCU 2.
In one or some alternative embodiments, referring to fig. 6, the overheat detection module 6 further includes a twenty-third resistor R23 and a ninth capacitor C9, and a common terminal of the seventeenth resistor R17 and the twenty-first resistor R21 is connected to the 2 pin of the LM393 chip through the twenty-third resistor R23; the ninth capacitor C9 is connected in parallel with the twenty-first resistor R21.
In one or some alternative embodiments, referring to fig. 6, the overheat detection module 6 further includes an eighth capacitor C8, a tenth capacitor C10, a twelfth capacitor C12, a twenty-fourth resistor R24, and a twenty-fifth resistor R25;
one end of the eighth capacitor C8 is connected to the second reference voltage VCC2, and the other end is grounded;
a common end of the nineteenth resistor R19 and the twenty-second resistor R22 is connected with the 3 pins of the power amplifier start-stop control switch through the fourth resistor R4, and the twelfth capacitor C12 is connected with the twenty-second resistor R22 in parallel; the common end of the twenty-fifth resistor R25 and the 3 pin of the LM393 chip is grounded through the tenth capacitor C10;
In one or some optional embodiments, the nineteenth resistor R19 is disposed at the heat emitting end of the power amplifier module 4. The embodiment of the utility model provides an in, this power amplifier module 4's the end that generates heat can be power amplifier module 4's radiator unit, with this nineteenth resistance setting at power amplifier module 4's radiator unit, through nineteenth resistance with radiator unit's temperature variation signal conversion for voltage signal.
Example two
Based on the same inventive concept, the utility model also provides a data transmission electric platform system, include: audio signal transmitting equipment and audio signal receiving equipment of voltage self-checking described in the first embodiment.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. An audio signal receiving device with voltage self-checking function, comprising: the power supply module, the micro control unit MCU, the energy storage power supply, the power amplification module and the voltage detection module;
the power supply module is connected with the energy storage power supply and the MCU and used for supplying power to the energy storage power supply according to a control signal of the MCU;
the energy storage power supply is connected with the power amplification module and the MCU and used for supplying power to the power amplification module according to the control signal of the MCU;
the voltage detection module is connected with the energy storage power supply, the power amplification module and the MCU and is used for detecting a voltage signal value of a positive terminal of the energy storage power supply and comparing the voltage signal value of the positive terminal with a first preset threshold and a second preset threshold respectively; if the voltage signal value of the positive terminal is greater than the first preset threshold value, sending a first voltage control signal for controlling the power supply module to be disconnected to the MCU; and if the positive terminal voltage signal value is smaller than the second preset threshold value, sending a second voltage control signal for controlling the power amplifier module to be disconnected to the MCU.
2. The audio signal receiving device for voltage self-test according to claim 1, wherein the voltage detection module comprises: the voltage control circuit comprises a voltage control signal switch, a first reference voltage modulation circuit, a second reference voltage modulation circuit and a voltage sampling circuit;
the first reference voltage modulation circuit, the second reference voltage modulation circuit and the voltage control signal switch are respectively connected;
one end of the voltage sampling circuit is connected to the positive end of the energy storage power supply, and the other end of the voltage sampling circuit is connected to the voltage control signal switch;
the voltage sampling circuit is used for collecting the voltage signal value of the positive terminal;
the first reference voltage modulation circuit is used for outputting the first preset threshold value, and the second reference voltage modulation circuit is used for outputting the second preset threshold value;
the voltage control signal switch is used for sending the first voltage control signal to the MCU if the voltage signal value of the positive terminal is greater than the first preset threshold value; and if the voltage signal value of the positive terminal is smaller than the second preset threshold value, sending a second voltage control signal to the MCU.
3. The audio signal receiving device for voltage self-test according to claim 2, wherein the voltage control signal switch comprises a first comparator and a second comparator;
the first reference voltage modulation circuit comprises a first resistor, a second resistor and a third resistor;
the first resistor is an adjustable resistor;
the second resistor and the third resistor are connected in series, a common end of the first resistor and the second resistor is connected with a first reference voltage, and a common end of the first resistor and the third resistor is connected with a first input end of the first comparator;
the second reference voltage modulation circuit comprises a fourteenth resistor, a fifteenth resistor and a sixteenth resistor;
the sixteenth resistor is an adjustable resistor;
the fourteenth resistor and the fifteenth resistor are connected in series, a common end of the fourteenth resistor and the sixteenth resistor is connected with a first reference voltage, and a common end of the fifteenth resistor and the sixteenth resistor is connected with a first input end of the second comparator;
the voltage sampling circuit comprises a fifth resistor and a sixth resistor which are connected in series;
one end of the fifth resistor is grounded, one end of the sixth resistor is connected to the power supply module and the energy storage power supply, and the common ends of the fifth resistor and the sixth resistor are respectively connected to the second input ends of the first comparator and the second comparator;
and the output ends of the first comparator and the second comparator are respectively connected with the MCU.
4. Audio signal receiving device for voltage self-test according to claim 3,
the first reference voltage modulation circuit further comprises a seventh resistor and a second capacitor, and a common end of the first resistor and the third resistor is connected to a first input end of the first comparator through the seventh resistor; the second capacitor is connected with the third resistor in parallel;
the common end of the fourteenth resistor and the fifteenth resistor is connected to the first input end of the second comparator through the eleventh resistor; the sixth capacitor is connected in parallel with the fifteenth resistor.
5. Audio signal receiving device for voltage self-test according to claim 3,
the voltage sampling circuit further comprises a fourth resistor, a third capacitor, a fourth capacitor, an eighth resistor, a twelfth resistor, a fifth capacitor, a seventh capacitor and a thirteenth resistor;
the common end of the fifth resistor and the sixth resistor is connected to the second input end of the first comparator through the eighth resistor; the common end of the fifth resistor and the sixth resistor is connected to the second input end of the second comparator through the twelfth resistor;
the common end of the fifth resistor, the sixth resistor and the eighth resistor is grounded through the fourth resistor, and the fourth capacitor is connected with the fourth resistor in parallel; the common end of the eighth resistor and the second input end of the first comparator is grounded through the third capacitor;
the common end of the fifth resistor, the sixth resistor and the twelfth resistor is grounded through the thirteenth resistor, and the seventh capacitor is connected with the thirteenth resistor in parallel; and the common end of the twelfth resistor and the second input end of the second comparator is grounded through the fifth capacitor.
6. The audio signal receiving device for voltage self-test according to claim 3, wherein the voltage detection module further comprises a first capacitor, one end of the first capacitor is connected to the first reference voltage, and the other end of the first capacitor is grounded.
7. The audio signal receiving device for voltage self-test according to any one of claims 1 to 6, further comprising: an overheat detection module;
the overheat detection module is connected with the power amplifier module and the MCU respectively and used for detecting the temperature of the power amplifier module and comparing the temperature with a third preset threshold value, and if the detected temperature value of the power amplifier module is greater than the third preset threshold value, a third voltage control signal for controlling the power amplifier module to be disconnected is sent to the MCU.
8. The audio signal receiving device for voltage self-test according to claim 7, wherein the overheat detection module comprises: the power amplifier starting and stopping control switch and the seventeenth resistor to the twenty second resistor are connected;
the seventeenth resistor is a variable resistor, and the nineteenth resistor is a temperature variable resistor;
the power amplifier is characterized in that the twentieth resistor and the twenty-first resistor are connected in series, a common end of the seventeenth resistor and the twentieth resistor is connected with a second reference voltage, and a common end of the seventeenth resistor and the twenty-first resistor is connected with a first input end of the power amplifier start-stop control switch;
the eighteenth resistor, the nineteenth resistor and the twenty-second resistor are connected in series, one end of the eighteenth resistor is connected with the second reference voltage, and the common end of the nineteenth resistor and the twenty-second resistor is connected with the second input end of the power amplifier start-stop control switch;
the output end of the power amplifier start-stop control switch is connected with the MCU.
9. The audio signal receiving device with voltage self-test according to claim 8, wherein the nineteenth resistor is disposed at the heat-emitting end of the power amplifier module.
10. A data transfer station system, comprising: an audio signal transmitting device and an audio signal receiving device for voltage self-test according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120802141.0U CN214756311U (en) | 2021-04-19 | 2021-04-19 | Audio signal receiving equipment with voltage self-checking function and data transmission radio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120802141.0U CN214756311U (en) | 2021-04-19 | 2021-04-19 | Audio signal receiving equipment with voltage self-checking function and data transmission radio system |
Publications (1)
| Publication Number | Publication Date |
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| CN214756311U true CN214756311U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120802141.0U Active CN214756311U (en) | 2021-04-19 | 2021-04-19 | Audio signal receiving equipment with voltage self-checking function and data transmission radio system |
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| CN (1) | CN214756311U (en) |
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