CN108437889B - Sounding device with multiple warning functions and control method thereof - Google Patents
Sounding device with multiple warning functions and control method thereof Download PDFInfo
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- CN108437889B CN108437889B CN201810194655.5A CN201810194655A CN108437889B CN 108437889 B CN108437889 B CN 108437889B CN 201810194655 A CN201810194655 A CN 201810194655A CN 108437889 B CN108437889 B CN 108437889B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/001—Switches therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a sound generating device with various warning functions and a control method thereof. The input circuit adopts the design of a combined button switch to control different sounding states of the sounding device by pressing lightly, so that a driver is prevented from pressing a wrong button in a busy state in an emergency, and simultaneously, the sounding device can sound more warning than the traditional vehicle whistling, meanwhile, the lighting device is additionally arranged on the vehicle sounding device in consideration of the situation that the deaf-mute is likely to be encountered. The invention has simple structure, strong practicability and good market prospect.
Description
Technical Field
The invention belongs to the field of vehicle sounding devices, and particularly relates to a sounding device with multiple warning functions and a control method thereof.
Background
The existing vehicle sounding device system sounds singly, and is difficult to send warning signals to the outside in emergency. Under the general condition, when the vehicle is crowded, only the button of the sounding device is needed to be pressed, and the sounding device sounds a whistle, so that the requirements under the general condition can be met. But in particularly urgent situations, such as out of control, where the driver is about to collide with other vehicles, or in other emergency situations, the driver is urgent to remind the opposite to avoid the accident as much as possible. In a similar variety of emergency situations, the whistle emitted by the vehicle sounding device is required to have more warning sense. Or the deaf-mute is encountered on the road, the whistling sound is not heard, and the warning light flashes to transmit the warning signal at the moment, so that the vehicle sounding device is also required to be provided with the function of warning light flashing.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a sounding device with various warning functions and a control method thereof.
In order to solve the problems in the prior art, the invention discloses a sounding device with multiple warning functions, which comprises an input circuit, a singlechip U1, a luminous driving circuit, a luminous device L1, a sounding driving circuit and a sounding device S1, wherein the input circuit is connected with the singlechip U1, the singlechip U1 is respectively connected with the luminous driving circuit and the sounding driving circuit, the luminous driving circuit is connected with the luminous device, and the sounding driving circuit is connected with the sounding device.
Further, the input circuit includes combination button switch J1, combination button switch J1 includes 3 conducting strips, insulating stand, fixed rivet, button, 3 wires of connecting corresponding conducting strip respectively, and 3 conducting strips are fixed in the same side of insulating stand through fixed rivet respectively, and 3 conducting strips set gradually from last to lower, and 3 conducting strips can be each other contactless when no exogenic action, can contact under the exogenic action, and the button setting is in the upper portion of the conducting strip of top.
Further, the upper two conductive sheets are made of elastic materials.
Further, the lower parts of the upper two conductive sheets are provided with protruding parts.
Further, the input circuit further comprises a resistor R1 and a resistor R2, one wire is grounded, one wire is connected with a power supply through the resistor R1, one wire is connected with the power supply through the resistor R2, the resistor R1 is connected with the resistor R2, and two wires connected with the conducting strip are further connected with the single chip microcomputer U1 respectively.
Further, the model of the singlechip U1 is STC12C2052AD, two wires connected with the conducting strip are respectively connected with a P1.0 port and a P1.1 port of the singlechip U1, and the singlechip U1 is also respectively connected with a crystal oscillator circuit and a reset circuit.
Further, the light-emitting driving circuit comprises a resistor R3, a resistor R9 and an optical coupler U2, wherein the anode of a light-emitting diode of the optical coupler U2 is connected with a power supply, the cathode of the light-emitting diode of the optical coupler U2 is connected with a P3.7 port of the single chip microcomputer U1 through the resistor R3, the collector of a phototriode of the optical coupler U2 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the power supply, the collector of the phototriode is also connected with a light-emitting device L1, the other end of the light-emitting device L1 is grounded, and the emitter of the phototriode of the optical coupler U2 is grounded.
Further, the sounding driving circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C2, a capacitor C5 and an amplifier U3, wherein the in-phase input end of the amplifier U3 is connected with the P3.5 port of the singlechip U1 through the resistor R6, the inverting input end of the amplifier U3 is grounded through the resistor R4, the output end of the amplifier U3 is connected with the resistor R4 through the resistor R5, the output end of the amplifier U3 is grounded through the resistor R8 and the capacitor C5, and the output end of the amplifier U3 is simultaneously connected with the sounding device S1 through the capacitor C2.
Further, the control method of the sound generating device with multiple warning functions comprises the following steps:
step A: initializing an IO port by the singlechip U1;
and (B) step (B): the singlechip U1 reads the level states of P1.0 and P1.1 ports connected with the input circuit;
step C: the singlechip U1 judges whether the P1.0 port and the P1.1 port meet the condition of high level, if so, the step D is entered, and if not, the step E is turned to;
step D: b, the light-emitting driving circuit controls the light-emitting device L1 to be turned off, the sound-emitting driving circuit controls the sound-emitting device S1 to be mute, and the step B is turned;
step E: the singlechip U1 judges whether the P1.0 port and the P1.1 port meet the conditions that the P1.0 port is in a low level and the P1.1 port is in a high level, if yes, the step F is entered, and if not, the step G is entered;
step F: b, the light-emitting driving circuit controls the light-emitting device L1 to flash and has slower frequency, the sound-emitting driving circuit controls the sound-emitting device S1 to emit sound and has slower frequency, and the step B is shifted;
step G: the singlechip U1 judges whether ports P1.0 and P1.1 meet the condition that both ports are low level, if so, the step H is entered, and if not, the step B is shifted;
step H: b, the light-emitting driving circuit controls the light-emitting device L1 to flash, the frequency is relatively jerky, the sound-emitting driving circuit controls the sound-emitting device S1 to emit sound, the frequency is relatively jerky, and the step B is turned.
The invention has the beneficial effects that: the design of the combined button switch is used for controlling different sounding states of the sounding device by pressing lightly and heavily, so that the situation that a driver presses a wrong button in the process of being in a busy state in an emergency is avoided, meanwhile, the sounding of the vehicle is more caution than that of a traditional vehicle whistling sound, meanwhile, the situation that the deaf-mute is possibly encountered is considered, the lighting device is additionally arranged on the vehicle sounding device, the deaf-mute who cannot hear the sound is conveniently reminded, and the lighting and sounding are combined to play a caution effect.
Drawings
FIG. 1 is a block diagram of the structure of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
FIG. 3 is a schematic view of the structure of the combination push button switch of the present invention;
FIG. 4 is a schematic view of a combination push button switch of the present invention in a light press state;
FIG. 5 is a schematic diagram of the present invention in a combination pushbutton switch re-depressed state;
FIG. 6 is a diagram of the present invention when a signal of a certain frequency is continuously emitted;
FIG. 7 is a diagram showing the sound and light signals generated by the combination push button switch of the present invention in the pressed state as shown in FIG. 4;
FIG. 8 is a diagram showing the sound and light signals generated by the combination push button switch of the present invention in the pressed state as shown in FIG. 5;
fig. 9 is a flow chart of the operation of the present invention.
1: a conductive sheet A;2: a conductive sheet B;3: a conductive sheet C;4: an insulating column; 5: fixing a rivet; 6: a button; 7: a lead A;8: a lead B;9: and a wire C.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in FIG. 1, the sounding device with multiple warning functions comprises an input circuit, a singlechip U1, a luminous driving circuit, a luminous device L1, a sounding driving circuit and a sounding device S1, wherein the input circuit is connected with the singlechip U1, the singlechip U1 is respectively connected with the luminous driving circuit and the sounding driving circuit, the luminous driving circuit is connected with the luminous device, and the sounding driving circuit is connected with the sounding device.
As shown in fig. 2, the input circuit includes a resistor R1 and a resistor R2, a wire A7 is grounded, a wire B8 is connected to a power supply through the resistor R1, a wire C is connected to the power supply through the resistor R2, the resistor R1 is connected to the resistor R2, and the wire B8 and the wire C9 are also connected to the single chip microcomputer U1 respectively. The model of the singlechip U1 is STC12C2052AD, a lead B8 is connected with a P1.0 port of the singlechip U1, a lead C9 is connected with a P1.1 port of the singlechip U1, and the singlechip U1 is also respectively connected with a crystal oscillator circuit and a reset circuit. The luminous drive circuit comprises a resistor R3, a resistor R9 and an optical coupler U2, wherein the anode of a light emitting diode of the optical coupler U2 is connected with a power supply, the cathode of the light emitting diode of the optical coupler U2 is connected with a P3.7 port of the singlechip U1 through the resistor R3, the collector of a phototriode of the optical coupler U2 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the power supply, the collector of the phototriode is also connected with a luminous device L1, the other end of the luminous device L1 is grounded, and the emitter of the phototriode of the optical coupler U2 is grounded. The sounding driving circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C2, a capacitor C5 and an amplifier U3, wherein the in-phase input end of the amplifier U3 is connected with the P3.5 port of the single chip microcomputer U1 through the resistor R6, the inverting input end of the amplifier U3 is grounded through the resistor R4, the output end of the amplifier U3 is connected with the resistor R4 through the resistor R5, the output end of the amplifier U3 is grounded through the resistor R8 and the capacitor C5, and the output end of the amplifier U3 is connected with the sounding device S1 through the capacitor C2.
As shown in fig. 3, the combined button switch J1 includes a conductive sheet A1, a conductive sheet B2, a conductive sheet C3, an insulating column 4, a fixing rivet 5, a button 6, a conductive wire A7, a conductive wire B8 and a conductive wire C9, wherein the conductive sheet A1, the conductive sheet B2 and the conductive sheet C3 are respectively fixed on the same side of the insulating column 4 through the fixing rivet 5, the conductive sheet A1, the conductive sheet B2 and the conductive sheet C3 are sequentially arranged from top to bottom, the conductive sheet A1, the conductive sheet B2 and the conductive sheet C3 are not contacted with each other, the button 6 is arranged on the upper portion of the conductive sheet A1, the conductive sheet A1 is connected with the conductive wire A7, the conductive sheet B2 is connected with the conductive wire B8, and the conductive sheet C3 is connected with the conductive wire C9. The conducting strip A1 and the conducting strip B2 are made of elastic materials, the lower parts of the conducting strip A1 and the conducting strip B2 are provided with protruding parts, and the three conducting strips are contacted with each other to different degrees when the design is convenient to press. When the button 6 is pressed lightly, the combination button switch J1 assumes a state as shown in fig. 4, and when the button 6 is pressed heavily, the combination button switch J1 assumes a state as shown in fig. 5.
As shown in fig. 6, when the IO port of the single-chip microcomputer U1 emits a continuous rectangular wave signal with a fixed frequency (the signal frequency is f at this time), after being amplified by the sounding driving circuit, the sounding device S1 emits a continuous "beep".
As shown in fig. 7, if the single-chip microcomputer IO port still sends out a continuous rectangular wave signal with the frequency f, and after the duration t1 time period, the single-chip microcomputer IO port sends out a low-level signal again, and after the duration t2 time period, the continuous rectangular wave signal with the frequency f is sent out again, and the continuous rectangular wave signal is periodically processed, and after the signal is amplified by the sounding driving circuit, the sounding device S1 will send out "tic-tic (the horizontal line represents silence). Namely: and (3) carrying out the steps of mute for t1 seconds, mute for t2 seconds, mute for t1 seconds, mute for t2 seconds and cycle. The light emitting device L1 will also emit "bright-bright" (the horizontal line represents the lamp-out), namely: the lamp is turned on for t1 seconds, turned off for t2 seconds, turned on for t1 second again, turned off for t2 seconds, and the cycle is performed. Here, t1 takes 0.1 to 0.5 seconds, preferably 0.2 seconds, t2 takes 0.3 to 1 second, preferably 0.4 seconds, and the signal frequency f takes 300Hz to 3KHz, preferably 1.5KHz. Because the time t2 is longer, the sound signals and the light signals emitted by the sound emitting device S1 and the light emitting device L1 are ordinary warning signals, and the device is not rapid and is suitable for ordinary occasions.
As shown in fig. 8, if the single-chip microcomputer IO port still sends out a continuous rectangular wave signal with the frequency f, and after the duration t1 time period, a low level signal is sent out again, and after the duration t3 time period, a continuous rectangular wave signal is sent out with the frequency f again, and the signal is periodically processed, after being amplified by the sounding driving circuit, the sounding device S1 will send out a sound "tic-" (the horizontal line represents silence). Namely: and (3) carrying out the periodic operation after the time of t1 s, the time of mute t3 s, the time of the re-mute t1 s and the time of mute t3 s. The light emitting device L1 will also emit "on-light-on-light" (the horizontal line represents the lamp off), namely: the lamp is turned on for t1 seconds, turned off for t3 seconds, turned on for t1 second again, turned off for t3 seconds, and the cycle is performed. Here, t1 takes 0.1 to 0.5 seconds, preferably 0.2 seconds, t3 takes 0.1 to 0.5 seconds, preferably 0.2 seconds, and the signal frequency f takes 300Hz to 3KHz, preferably 1.5KHz. Because the time t3 is short, the sound signal and the light signal emitted by the sound emitting device S1 and the light emitting device L1 are the rapid beep warning sounds, have rapid sense, and are suitable for particularly emergent occasions.
As shown in fig. 9, after the singlechip U1 is powered on, the singlechip U1 is initialized first, including initializing the IO port: the P1.0 and P1.1 ports are set to be in an input state, so that the states of the combined button switches are convenient to read. The ports P3.7 and P3.5 are set to be in an output state, and then the sounding device S1 is set to be in a mute state, namely: the P3.5 port outputs a low level, and the light emitting device L1 is put into an off state, that is: the P3.7 port outputs a low level.
Then, the singlechip U1 starts to read the level states of the ports P1.0 and P1.1, if the ports P1.0 and P1.1 are both in high level, the conducting strips A1 and B2 in the combined button switch J1 are considered to be not pressed down, at the moment, the sounding device S1 is controlled to be mute, and the lighting device L1 is extinguished, namely: the P3.5 port outputs a low level and the P3.7 port outputs a low level. The level states of the P1.0, P1.1 ports then continue to be read. If the conditions that the P1.0 port and the P1.1 port are both in the high level are not satisfied, the condition that the P1.0 port is in the low level and the P1.1 port is in the high level is continuously judged whether to be satisfied or not.
If the P1.0 port is low and the P1.1 port is high, then it is considered that conductive pad A1 is pressed and in contact with conductive pad B2 but not with conductive pad C3 in the combination push button switch, conductive pad B2 receives a low and conductive pad C3 does not receive a low. Namely: conductive sheet B2 is low and conductive sheet C3 is high. The light emitting device L1, the sound emitting device S1 operate in the mode of fig. 7, namely: the P3.5 and P3.7 ports all output waveform signals with the time sequence shown in FIG. 7, and then the level states of the P1.0 and P1.1 ports are continuously read. If the conditions that the P1.0 port is at the low level and the P1.1 port is at the high level are not satisfied, the condition that the P1.0 port and the P1.1 port are both at the low level is continuously judged whether to be satisfied or not.
If the ports P1.0 and P1.1 are both low, then the conductive sheet A1 is considered to have been pushed to the bottom in the combination push button switch, and the conductive sheets A1, B2 and C3 are brought together, namely: the conductive sheets B2, C3 each receive a low level. Thus, the conductive plates B2 and C3 are both low. The sound emitting device is controlled to operate in the mode of fig. 8, namely: the P3.5 and P3.7 ports each output waveform signals with the timing shown in fig. 8, and then the level states of the P1.0 and P1.1 ports are continuously read. If the condition that the ports P1.0 and P1.1 are both low is not satisfied, the level states of the ports P1.0 and P1.1 are continuously read. So far, the whole cycle judgment and execution operation is completed, and the singlechip U1 continuously executes the cycle judgment operation. Since the button 6 must be pressed to bring the conductive sheet A1 into contact with the other two conductive sheets, there is neither a case where the conductive sheets B2 and C3 are in contact alone nor a case where the conductive sheets A1 and C3 are in contact alone, so there is no case where the P1.0 port is at a high level and the P1.1 port is at a low level.
Thus: when the button 6 in the combination button switch J1 is not pressed, the conductive sheet B2 and the conductive sheet C3 are pulled to high level by the resistors R1 and R2, at the moment, the light-emitting device L1 is turned off, and the sounding device S1 is muted; when the button 6 of the combined button switch J1 is pressed, so that the conducting strip A1 is pressed and is in contact with the conducting strip B2 but not in contact with the conducting strip C3, the potential of the conducting strip B2 becomes low level, and the conducting strip B2 is not in contact with the conducting strip C3, so that the conducting strip C3 is still high level at the moment, the singlechip U1 reads the level states of the ports P1.0 and P1.1, the port P1.0 is low level, the port P1.1 is high level, rectangular wave signals with slow time sequence are output at the ports P3.5 and P3.7 of the singlechip U1, the sound generating device S1 generates slow-rhythm sound at the moment, and the light emitting device L1 flickers slowly; when the button 6 of the combined button switch J1 is pressed, the conducting strip A1 is pressed and contacted with the conducting strips B2 and C3, at the moment, the electric potentials of the conducting strips B2 and C3 are changed into low levels, the single chip microcomputer U1 reads the level states of the ports P1.0 and P1.1, the ports P1.0 and P1.1 are both low levels, rectangular wave signals with rapid time sequence are output at the ports P3.5 and P3.7 of the single chip microcomputer U1, at the moment, the sounding device S1 sounds with rapid rhythm, and the light emitting device L1 flashes with rapid time.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (4)
1. Sounding device with multiple warning function, its characterized in that: the LED display device comprises an input circuit, a singlechip U1, a light-emitting driving circuit, a light-emitting device L1, a sound-emitting driving circuit and a sound-emitting device S1, wherein the input circuit is connected with the singlechip U1, the singlechip U1 is respectively connected with the light-emitting driving circuit and the sound-emitting driving circuit, the light-emitting driving circuit is connected with the light-emitting device L1, and the sound-emitting driving circuit is connected with the sound-emitting device S1;
the input circuit comprises a combined button switch J1, wherein the combined button switch J1 comprises a conducting strip A (1), a conducting strip B (2), a conducting strip C (3), an insulating upright post (4), a fixing rivet (5), a button (6), a conducting wire A (7), a conducting wire B (8) and a conducting wire C (9), the conducting strip A (1), the conducting strip B (2) and the conducting strip C (3) are respectively fixed on the same side of the insulating upright post (4) through the fixing rivet (5), the conducting strip A (1), the conducting strip B (2) and the conducting strip C (3) are sequentially arranged from top to bottom, the conducting strip A (1), the conducting strip B (2) and the conducting strip C (3) can be mutually out of contact when no external force acts, the button (6) is arranged on the upper part of the conducting strip A (1), the conducting strip A (1) is connected with the conducting wire A (7), the conducting strip B (2) is connected with the conducting wire B (8), and the conducting strip C (3) is connected with the conducting wire C (9);
the input circuit further comprises a resistor R1 and a resistor R2, a wire A (7) is grounded, a wire B (8) is connected with a power supply through the resistor R1, a wire C (9) is connected with the power supply through the resistor R2, the resistor R1 is connected with the resistor R2, and the wire B (8) and the wire C (9) are also respectively connected with the singlechip U1;
the light-emitting driving circuit comprises a resistor R3, a resistor R9 and an optical coupler U2, wherein the anode of a light-emitting diode of the optical coupler U2 is connected with a power supply, the cathode of the light-emitting diode of the optical coupler U2 is connected with a P3.7 port of the singlechip U1 through the resistor R3, the collector of a phototriode of the optical coupler U2 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the power supply, the collector of the phototriode is also connected with a light-emitting device L1, the other end of the light-emitting device L1 is grounded, and the emitter of the phototriode of the optical coupler U2 is grounded;
the sounding driving circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C2, a capacitor C5 and an amplifier U3, wherein the non-inverting input end of the amplifier U3 is connected with the P3.5 port of the singlechip U1 through the resistor R6, the inverting input end of the amplifier U3 is grounded through the resistor R4, the output end of the amplifier U3 is connected with the resistor R4 through the resistor R5, the output end of the amplifier U3 is grounded through the resistor R8 and the capacitor C5, and the output end of the amplifier U3 is simultaneously connected with the sounding device S1 through the capacitor C2;
the control method of the sound generating device comprises the following steps:
step A: initializing an IO port by the singlechip U1;
and (B) step (B): the singlechip U1 reads the level states of P1.0 and P1.1 ports connected with the input circuit;
step C: the singlechip U1 judges whether the P1.0 port and the P1.1 port meet the condition of high level, if so, the step D is entered, and if not, the step E is turned to;
step D: b, the light-emitting driving circuit controls the light-emitting device L1 to be turned off, the sound-emitting driving circuit controls the sound-emitting device S1 to be mute, and the step B is turned;
step E: the singlechip U1 judges whether the P1.0 port and the P1.1 port meet the conditions that the P1.0 port is in a low level and the P1.1 port is in a high level, if so, the step F is entered, and if not, the step G is entered;
step F: b, the light-emitting driving circuit controls the light-emitting device L1 to flash and slowly, the sound-emitting driving circuit controls the sound-emitting device S1 to emit sound and slowly in frequency, and the step B is turned to;
step G: the singlechip U1 judges whether ports P1.0 and P1.1 meet the condition that both ports are low level, if so, the step H is entered, and if not, the step B is shifted;
step H: b, the light-emitting driving circuit controls the light-emitting device L1 to flash, the frequency is relatively jerky, the sound-emitting driving circuit controls the sound-emitting device S1 to emit sound, the frequency is relatively jerky, and the step B is turned.
2. The sound generating apparatus having a plurality of warning functions as claimed in claim 1, wherein: the conductive sheet A (1) and the conductive sheet B (2) are made of elastic materials.
3. The sound generating apparatus having a plurality of warning functions as claimed in claim 1, wherein: the lower parts of the conductive sheet A (1) and the conductive sheet B (2) are provided with protruding parts.
4. The sound generating apparatus having a plurality of warning functions as claimed in claim 1, wherein: the model of the singlechip U1 is STC12C2052AD, and the singlechip U1 is also respectively connected with a crystal oscillator circuit and a reset circuit.
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| CN201810194655.5A CN108437889B (en) | 2018-03-09 | 2018-03-09 | Sounding device with multiple warning functions and control method thereof |
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| CN201810194655.5A CN108437889B (en) | 2018-03-09 | 2018-03-09 | Sounding device with multiple warning functions and control method thereof |
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| CN108437889B true CN108437889B (en) | 2023-07-28 |
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