CN210222970U - Fire display panel circuit - Google Patents
Fire display panel circuit Download PDFInfo
- Publication number
- CN210222970U CN210222970U CN201921492906.4U CN201921492906U CN210222970U CN 210222970 U CN210222970 U CN 210222970U CN 201921492906 U CN201921492906 U CN 201921492906U CN 210222970 U CN210222970 U CN 210222970U
- Authority
- CN
- China
- Prior art keywords
- module
- pin
- connector
- main control
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model relates to the technical field of circuit structures, in particular to a fire display panel circuit, which comprises a main control circuit, wherein the main control circuit comprises a main control chip, a first connector and a word library chip; the communication circuit comprises a second connector and a communication module; the power management circuit comprises a third connector and a power module; the key circuit comprises a key module; the display circuit comprises a display driving module, a back plate driving module, a fifth connector, a sound driving module and a sound generating module; the status indication circuit comprises an indicator light module. The utility model discloses the interference killing feature is strong, only needs less electric current can drive the operation, and makes low cost, and the product operation is stable, and operation interface is directly perceived.
Description
Technical Field
The utility model relates to a circuit structure technical field, concretely relates to conflagration display panel circuit.
Background
The fire display disc is installed in floor or independent fire-proof area, and is one kind of fire alarm display device for floor or independent fire-proof area fire alarm. When the host controller of the control center generates an alarm signal and transmits the alarm signal to a fire display panel in a fire area, the display panel can display the detector number and related information of the alarm and send out an alarm sound.
The existing fire display disc generally adopts a nixie tube as a display unit, the display structure is relatively simple, more detailed information cannot be provided as a reference for investigation, and an operation interface of a nixie tube display mode is not intuitive enough, so that further field situation information is difficult to obtain from the display content. If the information reader is not trained or has no operational experience before, useful information may not be obtained from the information reader in time and relevant operations are performed. In addition, the conventional nixie tube display structure has a large current requirement, which results in a relatively high circuit manufacturing cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a conflagration display panel circuit solves above technical problem.
The utility model provides a technical problem can adopt following technical scheme to realize:
a fire display panel circuit, the fire display panel circuit comprising:
the main control circuit comprises a main control chip, a first connector and a word stock chip, wherein the word stock chip is connected with the main control chip, word form display information is stored in the word stock chip, the first connector is connected with the main control chip, and the first connector is used for inputting and outputting a programming signal of the main control chip;
the communication circuit comprises a second connector and a communication module, the second connector is connected with the communication module, the second connector is connected with an external signal source to realize signal input of the communication circuit, the communication module realizes processing and output of the communication circuit, and the communication module is connected with the main control chip;
the power management circuit comprises a third connector and a power module, the third connector is connected with the power module and is connected with an external direct-current power supply, and the main control chip, the first connecting terminal, the word stock chip and the communication module are all connected with the power module and then get electricity;
the key circuit comprises a key module, the key module is used for generating a switching signal, and the key module is connected with the main control chip and then transmits the switching signal to the main control chip;
the display circuit comprises a display driving module, a back plate driving module, a fifth connector, a sound driving module and a sound production module,
the display driving module, the backboard driving module and the sound driving module are all connected with the power supply module and then get electricity,
the display driving module comprises a fourth connector, and is connected with an external display device and the main control chip through the fourth connector,
the input of the backboard driving module is connected with the main control chip, the output of the backboard driving module is connected with the fifth connector, and the backboard of the external display equipment is connected through the fifth connector,
the input of the sound driving module is connected with the main control chip, and the output of the sound driving module is connected with the sound production module;
the state indicating circuit comprises an indicating lamp module, two ends of the indicating lamp module are respectively connected with the power supply module and the main control chip, the indicating lamp module emits light after getting electricity from the power supply module according to a driving signal of the main control chip, and state indication is carried out according to the light emission.
In some possible embodiments, the main control chip is a microcontroller with a model number N76E003, and the connection structure of each pin of the main control chip is as follows:
the first pin, the fifth pin, the sixth pin and the twentieth pin are connected with the state indicating circuit;
the second pin and the third pin are connected with the communication module;
the fourth pin is grounded through a fifteenth capacitor and is connected with the first connector and the fourth connector;
the seventh pin is grounded, the ninth pin is connected with the power module to obtain power, and a sixteenth capacitor and a seventeenth capacitor are connected between the seventh pin and the ninth pin in parallel;
the eighth pin, the tenth pin and the eighteenth pin are respectively connected with the key circuit;
the eleventh pin is connected with the sound driving module;
the twelfth pin is connected with the back plate driving module;
the thirteenth pin and the fourteenth pin are connected with the fourth connector;
and the fifteenth pin, the sixteenth pin, the seventeenth pin and the nineteenth pin are connected with the word stock chip.
In some possible embodiments, the word stock chip is a word stock chip with a model number GT20L16S1Y, and the connection structure of the pins is as follows:
the first pin is connected with a fifteenth pin of the main control chip;
the second pin is grounded;
the third pin is connected with a nineteenth pin of the main control chip;
the fourth pin is connected with the power supply module to obtain power and is grounded after passing through a twenty-fifth capacitor;
the fifth pin is connected with the seventeenth pin of the main control chip;
and the sixth pin is connected with the sixteenth pin of the main control chip.
In some possible embodiments, the first connector is a programmable port supporting SIP protocol, which has five pins, and the pin structure is as follows:
the first pin is connected with the power supply module to get electricity;
the second pin, the third pin and the fourth pin are connected with the main control chip and used for providing input of a programming control signal and input of a reset signal;
the fifth pin is grounded.
In some possible embodiments, the communication module includes a first transient suppression diode, a first filter, a first rectification module, a switching signal generation module, and a data signal generation module, wherein:
the first transient suppression diode is connected with the second connector, and a twenty-first capacitor is connected in parallel at two ends of the first transient suppression diode;
the input end of the first filter is connected with the second connector, the output end of the first filter is connected with the first rectifying module, and a twenty-second capacitor is connected in parallel with the output end of the first filter;
the output end of the first rectifying module is connected with an eighth resistor in parallel;
the switching signal generating module comprises a first triode and a second triode, the first triode is an NPN triode, the second triode is a PNP triode, and a collector of the first triode is connected with a base of the second triode, wherein:
the base electrode of the first triode is connected with the main control chip through a ninth resistor, and is grounded through a tenth resistor, and the emitter electrode of the first triode is grounded through a twelfth resistor;
a collector of the second triode is grounded through a twelfth resistor, and an emitter of the second triode is connected with the positive output end of the rectified signal of the first rectifying module through an eleventh resistor;
the data signal generation module comprises a third triode and a fourth triode, the third triode is an NPN triode, the fourth triode is a PNP triode, and the data signal generation module comprises:
the base electrode of the third triode is connected with the positive output end of the rectified signal of the first rectifying module after being connected with a fourteenth resistor, a thirteenth resistor and a sixth capacitor in series, and is connected with the negative output end of the rectified signal of the first rectifying module through a fifteenth resistor, one end of the fourteenth resistor, which is connected with the thirteenth resistor, is connected with the negative output end of the rectified signal of the first rectifying module through a seventh capacitor, the emitter electrode of the third triode is connected with the negative output end of the rectified signal of the first rectifying module, and the collector electrode of the third triode is connected with the power module through a sixteenth resistor and then gets electricity;
the emitting electrode of the fourth triode is connected with the power supply module and then is used for taking power, the base electrode of the fourth triode is connected with the collecting electrode of the third triode through a seventeenth resistor and is grounded through an eighth capacitor, the collecting electrode of the fourth triode is connected with an eighteenth resistor and a nineteenth resistor in series and then is grounded, the nineteenth resistor is connected with a ninth capacitor in parallel, and the nineteenth resistor is connected with one end of the eighteenth resistor and is connected with the main control chip.
In some of the possible preferred embodiments, the second connector has two terminals for connecting the positive and negative poles of the input signal, respectively;
the first transient suppression diode is connected with the input signal positive terminal of the second connector through a first fuse.
In some possible preferred embodiments, the first rectifying module is a rectifying bridge formed by four diodes connected end to end.
In some possible embodiments, the power supply module includes a second transient suppression diode, a second filter, a second rectification module, a voltage reduction module, and a voltage stabilization module, wherein:
the second transient suppression diode is connected with the third connector, and an eighteenth capacitor is connected in parallel with the second transient suppression diode;
the input end of the second filter is connected with the third connector, the output end of the second filter is connected with the input end of the second rectifying module, and a nineteenth capacitor is connected to the output end of the second filter in parallel;
the positive output end of the second rectifying module is connected with the input end of the voltage reduction module, the negative output end of the second rectifying module is grounded, and the output end of the second rectifying module is connected with a first capacitor and a second capacitor in parallel;
the output end of the voltage reduction module is connected with the input end of the voltage stabilization module through a first inductor;
the output end and the grounding end of the voltage stabilizing module are connected with a twentieth capacitor in parallel, the input end and the grounding end of the voltage stabilizing module are connected with a fourth capacitor and a fifth capacitor in parallel, and the input end of the voltage stabilizing module is connected with a fourth resistor and a fifth resistor in series and then is grounded.
In some possible preferred embodiments, the voltage-reducing module is a voltage-reducing chip with a model number MP2451, which has six pins, and the pin structure is as follows:
the first pin is connected with the input end of the voltage stabilizing module after being connected with the third capacitor and the first inductor in series;
the second pin is grounded;
the third pin is grounded through the fifth resistor;
the fourth pin is connected with the first pin through a fifth resistor;
the fifth pin is connected with the positive electrode output end of the second rectifying module;
the sixth pin is connected with the negative electrode of a Schottky diode, the positive electrode of the Schottky diode is grounded, and the sixth pin is connected with the first pin of the voltage reduction module through a third capacitor and connected with the input end of the voltage stabilization module through the first inductor.
In some of the possible preferred embodiments, the third connector has two terminals for connecting the positive input and the negative input of the external power source, respectively, and the second transient suppression diode is connected to the positive input of the third connector through a second fuse.
In some possible embodiments, the key circuit includes a first key module, a second key module, and a third key module, and any one of the key modules is a key switch and has two connection terminals, where:
one end of the first key module is grounded, and the other end of the first key module is connected with an eighteenth pin of the main control chip;
one end of the second key module is grounded, and the other end of the second key module is connected with the eighth pin of the main control chip;
one end of the third key module is grounded, and the other end of the third key module is connected with the ninth pin of the main control chip.
In some possible embodiments, the display driving module comprises a tenth capacitor, an eleventh capacitor, a twenty-third capacitor, a twenty-fourth capacitor, and the fourth connector is for connecting a connector of a liquid crystal display unit of model LX-12864L-1, and has ten pins, wherein:
one end of the tenth capacitor is connected with the sixth pin of the fourth connector, and the other end of the tenth capacitor is grounded;
one end of the eleventh capacitor is connected with the sixth pin of the fourth connector, and the other end of the eleventh capacitor is grounded;
two ends of the twenty-third capacitor are respectively connected with a seventh pin and an eighth pin of the fourth connector;
two ends of the twenty-fourth capacitor are respectively connected with the ninth pin and the tenth pin of the fourth connector;
a tenth pin of the fourth connector is grounded, and a sixth pin of the fourth connector is connected with the power module and then gets power;
a first pin of the fourth connector is connected with a fourteenth pin of the main control chip;
a second pin of the fourth connector is connected with a fourth pin of the main control chip;
a third pin of the fourth connector is connected with a thirteenth pin of the main control chip;
a fourth pin of the fourth connector is connected with a fifteenth pin of the main control chip;
and a fifth pin of the fourth connector is connected with a sixteenth pin of the main control chip.
In some possible embodiments, the backplane driving module includes a twelfth capacitor, a twenty-fifth resistor, a fifth triode, and a twenty-sixth resistor, and the fifth connector has at least two pins for connection, where:
one end of the twelfth capacitor is grounded, and the other end of the twelfth capacitor is connected with the first pin of the fifth connector;
a first pin of the fifth connector is connected with the power supply module and then gets electricity;
and a collector of the fifth triode is connected with the second pin of the fifth connector through the twenty-fifth resistor, a base of the fifth triode is connected with the twelfth pin of the main control chip through the twenty-sixth resistor, and an emitter of the fifth triode is grounded.
In some possible embodiments, the sound driving module includes a second inductor, a fourteenth capacitor, a sixth triode, a twenty-eighth resistor, a thirteenth capacitor, and a twenty-seventh resistor, and the sound generating module is a speaker unit having two pins, wherein:
the positive electrode input end of the sounding module is connected with the power supply module and then gets electricity, the negative electrode input end of the sounding module is connected with one end of the second inductor, the other end of the second inductor is connected with the power supply module and then gets electricity, and the other end of the second inductor is grounded through the fourteenth capacitor;
a collector electrode of the sixth triode is connected with a negative electrode input end of the sounding module, an emitter electrode of the sixth triode is grounded, and a base electrode of the sixth triode is connected with an eleventh pin of the main control chip through the twenty-seventh resistor;
one end of the thirteenth capacitor is connected with the base electrode of the sixth triode, and the other end of the thirteenth capacitor is grounded;
one end of the twenty-eighth resistor is connected with the base electrode of the sixth triode, and the other end of the twenty-eighth resistor is grounded.
In some possible embodiments, the indication circuit includes a first indicator light module, a second indicator light module, a third indicator light module, a fourth indicator light module, wherein:
the first indicator lamp module comprises a first light emitting diode and a twentieth resistor, one end of the first light emitting diode is connected with a twentieth pin of the main control chip, and the other end of the first light emitting diode is connected with the power supply module through the twentieth resistor and then gets electricity;
the second indicator lamp module comprises a second light emitting diode and a twenty-first resistor, one end of the second light emitting diode is connected with the first pin of the main control chip, and the other end of the second light emitting diode is connected with the power supply module through the twenty-first resistor and then gets electricity;
the third indicator light module comprises a third light emitting diode and a twenty-second resistor, one end of the third light emitting diode is connected with a fifth pin of the main control chip, and the other end of the third light emitting diode is connected with the power supply module through the twenty-second resistor and then gets electricity;
the fourth indicator light module comprises a fourth light emitting diode and a twenty-fourth resistor, one end of the fourth light emitting diode is connected with a sixth pin of the main control chip, and the other end of the fourth light emitting diode is connected with the power supply module through the twenty-fourth resistor to obtain electricity.
Has the advantages that: due to the adoption of the technical scheme, the utility model discloses the interference killing feature is strong, only need less electric current can the drive operation, and preparation low cost, the components and parts of drawing materials are common components and parts, the preparation threshold is lower relatively, because the components and parts that use are the ripe product mostly, and use MCU as the master control, make the product operation stable, the display mode that adopts LCD also makes information output can have higher abundance, operation interface is also more directly perceived, friendly to operating personnel, the stability of complete machine operation improves greatly.
Drawings
Fig. 1 is a schematic structural diagram of a main control circuit of the present invention;
fig. 2 is a schematic structural diagram of a communication circuit according to the present invention;
fig. 3 is a schematic structural diagram of the power management circuit of the present invention;
fig. 4 is a schematic structural diagram of the key circuit of the present invention;
fig. 5 is a schematic structural diagram of a display circuit according to the present invention;
fig. 6 is a schematic structural diagram of the status indication circuit of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further explained with reference to the specific drawings.
The utility model provides a conflagration display panel circuit, including master control circuit, communication circuit, power management circuit, keying circuit, display circuit, status indication circuit, communication circuit is used for obtaining the input signal of external equipment after handling the transmission for master control circuit, power management circuit is used for generating the drive voltage of each circuit components and parts, keying circuit is used for receiving outside key instruction, display circuit is used for handling the external signal who obtains and is shown with characters, figure form or sound form outward, status indication circuit is used for showing various equipment running state.
Referring to fig. 1 to 6, the main control circuit includes a main control chip U1, a first connector J1 and a word stock chip U2, the word stock chip U2 is connected to the main control chip U1, word stock chip U2 stores font display information, the first connector J1 is connected to the main control chip U1, and the first connector J1 is used for inputting and outputting a programming signal to and from the main control chip U1.
As shown in fig. 1, in some embodiments, the main control chip U1 may be a microcontroller with a model N76E003, and the connection structure of the pins of the main control chip U1 is as follows:
the first pin, the fifth pin, the sixth pin and the twentieth pin are connected with a state indicating circuit, and any one pin is connected with one of the indicator light modules in the state indicating circuit;
the second pin and the third pin are connected with a communication module in the communication circuit;
the fourth pin is grounded through a fifteenth capacitor C15, and is connected to the first connector J1 and the fourth connector J4 to serve as an input of a hardware reset signal;
the seventh pin is grounded, the ninth pin is connected with the +3.3V output of the power module of the power management circuit, and a sixteenth capacitor C16 and a seventeenth capacitor C17 are connected between the seventh pin and the ninth pin in parallel;
the eighth pin, the tenth pin and the eighteenth pin are respectively connected with one of the key modules in the key circuit;
the eleventh pin is connected with the sound driving module and then outputs a PWM (pulse-width modulation) signal so as to drive the loudspeaker to emit different sounds;
the twelfth pin is connected with the back plate driving module;
the thirteenth pin and the fourteenth pin are connected with a fourth connector J4;
the fifteenth pin, the sixteenth pin, the seventeenth pin and the nineteenth pin are connected with the word stock chip U2.
As shown in fig. 1, in some embodiments, the word stock chip U2 is a word stock chip U2 with a model GT20L16S1Y, and the connection structure of its pins is as follows:
the first pin is connected with the fifteenth pin of the main control chip U1 so as to obtain a speaker clock signal output by the pin;
the second pin is grounded;
the third pin is a chip selection signal of the word stock chip U2 and is connected with the nineteenth pin of the main control chip U1;
the fourth pin is connected with the +3.3V output of the power supply module of the power supply management circuit, is grounded after passing through a twenty-fifth capacitor C25, and supplies power to the word stock chip U2 by taking the fourth pin as the second pin;
the fifth pin is connected with the seventeenth pin of the main control chip U1, the sixth pin is connected with the sixteenth pin of the main control chip U1, and the two pins are used for selecting the input and output directions of the master device and the slave device during SPI communication.
In some embodiments, the first connector J1 is a programmable port supporting the SIP protocol, and has five pins, which have the following structure:
the first pin is connected with the +3.3V output of the power supply module;
the second pin, the third pin and the fourth pin are connected with the main control chip U1 and are used for providing input of a programming control signal and input of a reset signal;
the fifth pin is grounded.
Referring to fig. 2, the communication circuit includes a second connector J2 and a communication module, the second connector J2 is connected to the communication module, the second connector J2 is connected to an external signal source to implement signal input of the communication circuit, the communication module implements processing and output of the communication circuit, and the communication module is connected to the main control chip U1.
In some embodiments, the communication module comprises a first transient suppression diode D1, a first filter T1, a first rectification module, a switching signal generation module, and a data signal generation module, wherein:
the first transient suppression diode D1 is connected with the second connector J2, and two ends of the first transient suppression diode D1 are connected with a twenty-first capacitor C21 in parallel;
the input end of the first filter T1 is connected with the second connector J2, the output end of the first filter T1 is connected with the first rectifying module, and a twenty-second capacitor C22 is connected in parallel with the output end of the first filter T1;
the output end of the first rectifying module is connected with an eighth resistor R8 in parallel;
the switching signal generating module comprises a first triode Q1 and a second triode Q2, the first triode Q1 is an NPN triode, the second triode Q2 is a PNP triode, and the collector of the first triode Q1 is connected with the base of the second triode Q2, wherein:
the base of the first triode Q1 is connected to the second pin (such as the ANS signal terminal in fig. 2) of the main control chip U1 through a ninth resistor R9, and is grounded through a tenth resistor R10, and the emitter of the first triode Q1 is grounded through a twelfth resistor R12;
the collector of the second triode Q2 is grounded through a twelfth resistor R12, and the emitter is connected with the positive output end of the rectified signal of the first rectifying module through an eleventh resistor R11;
the data signal generating module comprises a third triode Q3 and a fourth triode Q4, the third triode Q3 is an NPN triode, the fourth triode Q4 is a PNP triode, wherein:
the base of the third triode Q3 is connected with the positive pole output end S + + of the rectified signal of the first rectification module through a fourteenth resistor R14, a thirteenth resistor R13 and a sixth capacitor C6 in series, and is connected with the negative pole output end S — of the rectified signal of the first rectification module through a fifteenth resistor R15, one end of the fourteenth resistor R14 connected with the thirteenth resistor R13 is connected with the negative pole output end S — of the rectified signal of the first rectification module through a seventh capacitor C7, the emitter of the third triode Q3 is connected with the negative pole output end S — of the rectified signal of the first rectification module, and the collector of the third triode Q3 is connected with the +5V output of the power module through a sixteenth resistor R16;
an emitter of the fourth transistor Q4 is connected to the +5V output of the power module, a base of the fourth transistor Q4 is connected to a collector of the third transistor Q3 through a seventeenth resistor R17 and is grounded through an eighth capacitor C8, a collector of the fourth transistor Q4 is connected in series to an eighteenth resistor R18 and a nineteenth resistor 19 and is grounded, a ninth capacitor C9 is connected to the nineteenth resistor 19 in parallel, and one end of the nineteenth resistor R19, which is connected to the eighteenth resistor R18, is connected to a third pin (e.g., a DAT signal end in fig. 2) of the main control chip U1.
In some preferred embodiments, the second connector J2 has dual terminals for connecting the positive S + and negative S-of the input signal, respectively;
the first transient suppressor diode D1 is connected via a first fuse F1 to the positive input signal connection S + of the second connector J2.
In some preferred embodiments, the first rectifying module may adopt a rectifying bridge formed by connecting four diodes end to end, and the four diodes are 4148 type diodes.
Referring to fig. 3, the power management circuit includes a third connector J3 and a power module, the third connector J3 is connected to the power module, the third connector J3 is connected to an external dc power supply, and the main control chip U1, the first connection terminal, the word stock chip U2, and the communication module are all connected to the power module and then get electricity;
in some embodiments, the power module includes a second transient suppression diode D2, a second filter T2, a second rectification module U3, a voltage reduction module U4, and a voltage regulation module U5, wherein:
the second transient suppression diode D2 is connected with the third connector J3, and an eighteenth capacitor C18 is connected in parallel with the second transient suppression diode D2;
the input end of the second filter T2 is connected with the third connector J3, the output end is connected with the input end of the second rectifying module U3, and the output end of the second filter T2 is connected with a nineteenth capacitor C19 in parallel;
the positive electrode output end of the second rectifying module U3 is connected with the input end of the voltage reduction module U4, the negative electrode output end is grounded, and the output end of the rectifying module U3 is connected with the first capacitor C1 and the second capacitor C2 in parallel; in addition, the second rectifying module outputs + 24V;
the output end of the voltage reduction module U4 is connected with the input end of the voltage stabilization module U5 through a first inductor L1;
the output end and the grounding end of the voltage stabilizing module U5 are connected in parallel with a twentieth capacitor C20, the input end and the grounding end of the voltage stabilizing module U5 are connected in parallel with a fourth capacitor C4 and a fifth capacitor C5, the input end of the voltage stabilizing module U5 is connected in series with a fourth resistor R4 and a fifth resistor R5 and then is grounded, and in addition, the voltage stabilizing module U5 outputs +3.3V voltage; the voltage dropping module U4 outputs a +5V voltage.
In some preferred embodiments, the buck module U4 can be a buck chip with model MP2451, which has six pins, and the pin structure is as follows:
the first pin is connected with the third capacitor C3 and the first inductor L1 in series and then is connected with the input end of the voltage stabilizing module U5;
the second pin is grounded;
the third pin is grounded through a fifth resistor R5;
the fourth pin is connected with the first pin through a fifth resistor R5;
the fifth pin is connected with the positive electrode output end of the second rectifying module U3;
the sixth pin is connected to the cathode of the schottky diode D3, the anode of the schottky diode D3 is grounded, and the sixth pin is connected to the first pin of the voltage-reducing module U4 through the third capacitor C3 and connected to the input terminal of the voltage-stabilizing module U5 through the first inductor L1 (i.e., the third pin Vin of the voltage-stabilizing module, and the other two pins are the second pin Vout and the first pin GND).
In some preferred embodiments, the third connector J3 has two terminals for connecting the positive input and the negative input of the external power source, respectively, for example, when the external power source is 24V commercial power source, the positive input is 24V, and the negative input is grounded; a second transient suppression diode D2 may be provided connected to the positive input terminal of the third connector J3 through a second fuse F2.
Referring to fig. 4, the key circuit includes a key module, the key module is configured to generate a switch signal, and the key module is connected to the main control chip U1 and then transmits the switch signal to the main control chip U1; in some embodiments, the key circuit includes a first key module SW1, a second key module SW2, and a third key module SW3, any of which is a key switch and has two connection terminals, wherein:
one end of the first KEY module SW1 is grounded, and the other end is connected to an eighteenth pin (e.g., KEY1 signal end in fig. 4) of the main control chip U1;
one end of the second KEY module SW2 is grounded, and the other end is connected to the eighth pin (e.g., KEY2 signal end in fig. 4) of the main control chip U1;
one end of the third KEY module SW3 is grounded, and the other end is connected to the ninth pin (e.g., KEY3 signal terminal in fig. 4) of the main control chip U1.
Referring to fig. 5, the display circuit includes a display driving module, a back panel driving module, a sound driving module, and a sound generating module LS 1. Wherein:
the display driving module, the backboard driving module and the sound driving module are all connected with the power supply module and then get electricity;
the display driving module comprises a fourth connector J4, and is connected with an external display device and the main control chip U1 through a fourth connector J4;
the input of the backboard driving module is connected with the main control chip U1, the output of the backboard driving module is connected with the fifth connector J5, and the backboard of the external display device is connected through the fifth connector J5;
the input of the sound driving module is connected with the main control chip U1, and the output of the sound driving module is connected with the sound production module LS 1.
Referring to fig. 5, in some embodiments, the display driving module includes a tenth capacitor C10, an eleventh capacitor C11, a twenty-third capacitor C23, and a twenty-fourth capacitor C24, and the fourth connector J4 is provided as a connector for connecting a liquid crystal display cell of model LX-12864L-1, which has ten pins, wherein:
one end of the tenth capacitor C10 is connected to the sixth pin of the fourth connector J4, and the other end is grounded;
one end of the eleventh capacitor C11 is connected to the sixth pin of the fourth connector J4, and the other end is grounded;
two ends of the twenty-third capacitor C23 are respectively connected with the seventh pin and the eighth pin of the fourth connector J4;
two ends of the twenty-fourth capacitor C24 are respectively connected with the ninth pin and the tenth pin of the fourth connector J4;
the tenth pin of the fourth connector J4 is grounded, and the sixth pin is connected with the +3.3V output of the power supply module;
a first pin of the fourth connector J4 is connected with a fourteenth pin of the main control chip U1;
a second pin of the fourth connector J4 is connected with a fourth pin of the main control chip U1;
a third pin of the fourth connector J4 is connected with a thirteenth pin of the main control chip U1;
a fourth pin of the fourth connector J4 is connected with a fifteenth pin of the main control chip U1;
the fifth pin of the fourth connector J4 is connected to the sixteenth pin of the main control chip U1.
In some embodiments, the backplane driving module includes a twelfth capacitor C12, a twenty-fifth resistor R25, a fifth transistor Q5, and a twenty-sixth resistor R26, and the fifth connector J5 has at least two pins for connection, where:
one end of the twelfth capacitor C12 is grounded, and the other end of the twelfth capacitor C12 is connected with the first pin of the fifth connector J5;
a first pin of the fifth connector J5 is connected with the +3.3V output of the power supply module;
a collector of the fifth transistor Q5 is connected to the second pin of the fifth connector J5 through a twenty-fifth resistor R25, a base is connected to the twelfth pin (e.g., the LCD _ BK signal terminal in fig. 5) of the main control chip U1 through a twenty-sixth resistor R26, and an emitter is grounded.
In some embodiments, the sound driving module includes a second inductor L2, a fourteenth capacitor C14, a sixth transistor Q6, a twenty-eighth resistor R28, a thirteenth capacitor C13, and a twenty-seventh resistor R27, and the sound generating module LS1 is a speaker unit with two pins, which may be an AT3040 type speaker unit, and any one of the two pins is defined as a positive input, and the other one is a negative input, and there is no polarity, where:
the positive electrode input end of the sound production module LS1 is connected with the +24V output of the power supply module, the negative electrode input end of the sound production module LS1 is connected with one end of a second inductor L2, the other end of the second inductor L2 is connected with the +24V output of the power supply module, and the other end of the second inductor L2 is grounded through a fourteenth capacitor C14;
a collector of the sixth triode Q6 is connected to a negative input terminal of the sound module LS1, an emitter of the sixth triode Q6 is grounded, and a base of the sixth triode Q6 is connected to an eleventh pin (shown as a PWM signal terminal in fig. 5) of the main control chip U1 through a twenty-seventh resistor R27;
one end of a thirteenth capacitor C13 is connected with the base of the sixth triode Q6, and the other end of the thirteenth capacitor C13 is grounded;
one end of the twenty-eighth resistor R28 is connected to the base of the sixth triode Q6, and the other end is grounded.
Referring to fig. 6, the status indication circuit comprises an indicator light module, two ends of the indicator light module are respectively connected with +3.3V output of the power module and the main control chip U1, the indicator light module emits light after getting power from the power module according to a driving signal of the main control chip U1, and status indication is performed according to the light emission.
In some embodiments, the indicator circuit comprises a first indicator light module, a second indicator light module, a third indicator light module, a fourth indicator light module, wherein:
the first indicator light module comprises a first light emitting diode D8 and a twentieth resistor R20, one end of the first light emitting diode D8 is connected to a twentieth pin (as an LED _1 signal end in fig. 6) of the main control chip U1, and the other end is connected to the +3.3V output of the power supply module through the twentieth resistor R20;
the second indicator light module comprises a second light emitting diode D9 and a twenty-first resistor R21, one end of the second light emitting diode D9 is connected to a first pin (such as an LED _2 signal end in fig. 6) of the main control chip U1, and the other end is connected to the +3.3V output of the power supply module through the twenty-first resistor R21;
the third indicator light module comprises a third light emitting diode D10 and a twenty-second resistor R22, one end of the third light emitting diode D10 is connected to a fifth pin (such as an LED _3 signal end in fig. 6) of the main control chip U1, and the other end is connected to the +3.3V output of the power supply module through a twenty-second resistor R22;
the fourth indicator light module comprises a fourth light emitting diode D11 and a twenty-fourth resistor R24, wherein one end of the fourth light emitting diode D11 is connected to a sixth pin (e.g., a signal end of LED _4 in fig. 6) of the main control chip U1, and the other end is connected to the +3.3V output of the power module through the twenty-fourth resistor R24.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A fire display panel circuit, comprising:
the main control circuit comprises a main control chip, a first connector and a word stock chip, wherein the word stock chip is connected with the main control chip, word form display information is stored in the word stock chip, the first connector is connected with the main control chip, and the first connector is used for inputting and outputting a programming signal of the main control chip;
the communication circuit comprises a second connector and a communication module, the second connector is connected with the communication module, the second connector is connected with an external signal source to realize signal input of the communication circuit, the communication module realizes processing and output of the communication circuit, and the communication module is connected with the main control chip;
the power management circuit comprises a third connector and a power module, the third connector is connected with the power module and is connected with an external direct-current power supply, and the main control chip, the first connecting terminal, the word stock chip and the communication module are all connected with the power module and then get electricity;
the key circuit comprises a key module, the key module is used for generating a switching signal, and the key module is connected with the main control chip and then transmits the switching signal to the main control chip;
the display circuit comprises a display driving module, a back plate driving module, a fifth connector, a sound driving module and a sound production module,
the display driving module, the backboard driving module and the sound driving module are all connected with the power supply module and then get electricity,
the display driving module comprises a fourth connector, and is connected with an external display device and the main control chip through the fourth connector,
the input of the backboard driving module is connected with the main control chip, the output of the backboard driving module is connected with the fifth connector, and the backboard of the external display equipment is connected through the fifth connector,
the input of the sound driving module is connected with the main control chip, and the output of the sound driving module is connected with the sound production module;
the state indicating circuit comprises an indicating lamp module, two ends of the indicating lamp module are respectively connected with the power supply module and the main control chip, the indicating lamp module emits light after getting electricity from the power supply module according to a driving signal of the main control chip, and state indication is carried out according to the light emission.
2. The fire display panel circuit according to claim 1, wherein the main control chip is a microcontroller of type N76E003, and the connection structure of each pin of the main control chip is as follows:
the first pin, the fifth pin, the sixth pin and the twentieth pin are connected with the state indicating circuit;
the second pin and the third pin are connected with the communication module;
the fourth pin is grounded through a fifteenth capacitor and is connected with the first connector and the fourth connector;
the seventh pin is grounded, the ninth pin is connected with the power module to obtain power, and a sixteenth capacitor and a seventeenth capacitor are connected between the seventh pin and the ninth pin in parallel;
the eighth pin, the tenth pin and the eighteenth pin are respectively connected with the key circuit;
the eleventh pin is connected with the sound driving module;
the twelfth pin is connected with the back plate driving module;
the thirteenth pin and the fourteenth pin are connected with the fourth connector;
and the fifteenth pin, the sixteenth pin, the seventeenth pin and the nineteenth pin are connected with the word stock chip.
3. A fire display panel circuit as claimed in claim 2, wherein the font chip is a type GT20L16S1Y font chip, and the connection structure of the pins is as follows:
the first pin is connected with a fifteenth pin of the main control chip;
the second pin is grounded;
the third pin is connected with a nineteenth pin of the main control chip;
the fourth pin is connected with the power supply module to obtain power and is grounded after passing through a twenty-fifth capacitor;
the fifth pin is connected with the seventeenth pin of the main control chip;
the sixth pin is connected with the sixteenth pin of the main control chip;
the first connector is a programmable port supporting SIP protocol, and is provided with five pins, and the pin structure is as follows:
the first pin is connected with the power supply module to get electricity;
the second pin, the third pin and the fourth pin are connected with the main control chip and used for providing input of a programming control signal and input of a reset signal;
the fifth pin is grounded.
4. A fire display panel circuit according to claim 3, wherein the communication module comprises a first transient suppression diode, a first filter, a first rectifying module, a switching signal generating module, and a data signal generating module, wherein:
the first transient suppression diode is connected with the second connector, and a twenty-first capacitor is connected in parallel at two ends of the first transient suppression diode;
the input end of the first filter is connected with the second connector, the output end of the first filter is connected with the first rectifying module, and a twenty-second capacitor is connected in parallel with the output end of the first filter;
the output end of the first rectifying module is connected with an eighth resistor in parallel;
the switching signal generating module comprises a first triode and a second triode, the first triode is an NPN triode, the second triode is a PNP triode, and a collector of the first triode is connected with a base of the second triode, wherein:
the base electrode of the first triode is connected with the main control chip through a ninth resistor, and is grounded through a tenth resistor, and the emitter electrode of the first triode is grounded through a twelfth resistor;
a collector of the second triode is grounded through a twelfth resistor, and an emitter of the second triode is connected with the positive output end of the rectified signal of the first rectifying module through an eleventh resistor;
the data signal generation module comprises a third triode and a fourth triode, the third triode is an NPN triode, the fourth triode is a PNP triode, and the data signal generation module comprises:
the base electrode of the third triode is connected with the positive output end of the rectified signal of the first rectifying module after being connected with a fourteenth resistor, a thirteenth resistor and a sixth capacitor in series, and is connected with the negative output end of the rectified signal of the first rectifying module through a fifteenth resistor, one end of the fourteenth resistor, which is connected with the thirteenth resistor, is connected with the negative output end of the rectified signal of the first rectifying module through a seventh capacitor, the emitter electrode of the third triode is connected with the negative output end of the rectified signal of the first rectifying module, and the collector electrode of the third triode is connected with the power module through a sixteenth resistor and then gets electricity;
an emitting electrode of the fourth triode is connected with the power supply module and then gets electricity, a base electrode of the fourth triode is connected with a collector electrode of the third triode through a seventeenth resistor and is grounded through an eighth capacitor, the collector electrode of the fourth triode is connected with an eighteenth resistor and a nineteenth resistor in series and then is grounded, the nineteenth resistor is connected with a ninth capacitor in parallel, and one end of the nineteenth resistor, which is connected with the eighteenth resistor, is connected with the main control chip;
the second connector is provided with double wiring terminals which are respectively used for connecting the positive pole and the negative pole of an input signal;
the first transient suppression diode is connected with an input signal positive terminal of the second connector through a first fuse;
the first rectifying module is a rectifying bridge formed by connecting four diodes end to end.
5. The fire display panel circuit of claim 4, wherein the power module comprises a second transient suppression diode, a second filter, a second rectification module, a voltage reduction module, and a voltage regulation module, wherein:
the second transient suppression diode is connected with the third connector, and an eighteenth capacitor is connected in parallel with the second transient suppression diode;
the input end of the second filter is connected with the third connector, the output end of the second filter is connected with the input end of the second rectifying module, and a nineteenth capacitor is connected to the output end of the second filter in parallel;
the positive output end of the second rectifying module is connected with the input end of the voltage reduction module, the negative output end of the second rectifying module is grounded, and the output end of the second rectifying module is connected with a first capacitor and a second capacitor in parallel;
the output end of the voltage reduction module is connected with the input end of the voltage stabilization module through a first inductor;
the output end and the grounding end of the voltage stabilizing module are connected with a twentieth capacitor in parallel, the input end and the grounding end of the voltage stabilizing module are connected with a fourth capacitor and a fifth capacitor in parallel, and the input end of the voltage stabilizing module is connected with a fourth resistor and a fifth resistor in series and then is grounded;
the third connector is provided with double wiring terminals which are respectively used for connecting the positive input end and the negative input end of an external power supply, and the second transient suppression diode is connected with the positive input end of the third connector through the second fuse.
6. A fire display panel circuit according to claim 5, wherein the key circuit comprises a first key module, a second key module and a third key module, any one of the key modules is a key switch and has two connection terminals, wherein:
one end of the first key module is grounded, and the other end of the first key module is connected with an eighteenth pin of the main control chip;
one end of the second key module is grounded, and the other end of the second key module is connected with the eighth pin of the main control chip;
one end of the third key module is grounded, and the other end of the third key module is connected with the ninth pin of the main control chip.
7. A fire display panel circuit according to claim 6, wherein the display driver module comprises a tenth capacitor, an eleventh capacitor, a twenty-third capacitor, and a twenty-fourth capacitor, and the fourth connector is for connecting a connector of a liquid crystal display unit of type LX-12864L-1, which has ten pins, wherein:
one end of the tenth capacitor is connected with the sixth pin of the fourth connector, and the other end of the tenth capacitor is grounded;
one end of the eleventh capacitor is connected with the sixth pin of the fourth connector, and the other end of the eleventh capacitor is grounded;
two ends of the twenty-third capacitor are respectively connected with a seventh pin and an eighth pin of the fourth connector;
two ends of the twenty-fourth capacitor are respectively connected with the ninth pin and the tenth pin of the fourth connector;
a tenth pin of the fourth connector is grounded, and a sixth pin of the fourth connector is connected with the power module and then gets power;
a first pin of the fourth connector is connected with a fourteenth pin of the main control chip;
a second pin of the fourth connector is connected with a fourth pin of the main control chip;
a third pin of the fourth connector is connected with a thirteenth pin of the main control chip;
a fourth pin of the fourth connector is connected with a fifteenth pin of the main control chip;
and a fifth pin of the fourth connector is connected with a sixteenth pin of the main control chip.
8. A fire display panel circuit according to claim 7, wherein the back panel driving module comprises a twelfth capacitor, a twenty-fifth resistor, a fifth triode and a twenty-sixth resistor, the fifth connector has at least two connecting pins, and wherein:
one end of the twelfth capacitor is grounded, and the other end of the twelfth capacitor is connected with the first pin of the fifth connector;
a first pin of the fifth connector is connected with the power supply module and then gets electricity;
and a collector of the fifth triode is connected with the second pin of the fifth connector through the twenty-fifth resistor, a base of the fifth triode is connected with the twelfth pin of the main control chip through the twenty-sixth resistor, and an emitter of the fifth triode is grounded.
9. The fire display panel circuit of claim 8, wherein the sound driving module comprises a second inductor, a fourteenth capacitor, a sixth triode, a twenty-eighth resistor, a thirteenth capacitor and a twenty-seventh resistor, and the sound generating module is a speaker unit having two pins, wherein:
the positive electrode input end of the sounding module is connected with the power supply module and then gets electricity, the negative electrode input end of the sounding module is connected with one end of the second inductor, the other end of the second inductor is connected with the power supply module and then gets electricity, and the other end of the second inductor is grounded through the fourteenth capacitor;
a collector electrode of the sixth triode is connected with a negative electrode input end of the sounding module, an emitter electrode of the sixth triode is grounded, and a base electrode of the sixth triode is connected with an eleventh pin of the main control chip through the twenty-seventh resistor;
one end of the thirteenth capacitor is connected with the base electrode of the sixth triode, and the other end of the thirteenth capacitor is grounded;
one end of the twenty-eighth resistor is connected with the base electrode of the sixth triode, and the other end of the twenty-eighth resistor is grounded.
10. A fire display panel circuit as claimed in claim 9, wherein the indicator circuit comprises a first indicator light module, a second indicator light module, a third indicator light module, a fourth indicator light module, wherein:
the first indicator lamp module comprises a first light emitting diode and a twentieth resistor, one end of the first light emitting diode is connected with a twentieth pin of the main control chip, and the other end of the first light emitting diode is connected with the power supply module through the twentieth resistor and then gets electricity;
the second indicator lamp module comprises a second light emitting diode and a twenty-first resistor, one end of the second light emitting diode is connected with the first pin of the main control chip, and the other end of the second light emitting diode is connected with the power supply module through the twenty-first resistor and then gets electricity;
the third indicator light module comprises a third light emitting diode and a twenty-second resistor, one end of the third light emitting diode is connected with a fifth pin of the main control chip, and the other end of the third light emitting diode is connected with the power supply module through the twenty-second resistor and then gets electricity;
the fourth indicator light module comprises a fourth light emitting diode and a twenty-fourth resistor, one end of the fourth light emitting diode is connected with a sixth pin of the main control chip, and the other end of the fourth light emitting diode is connected with the power supply module through the twenty-fourth resistor to obtain electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921492906.4U CN210222970U (en) | 2019-09-10 | 2019-09-10 | Fire display panel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921492906.4U CN210222970U (en) | 2019-09-10 | 2019-09-10 | Fire display panel circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210222970U true CN210222970U (en) | 2020-03-31 |
Family
ID=69920320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921492906.4U Active CN210222970U (en) | 2019-09-10 | 2019-09-10 | Fire display panel circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210222970U (en) |
-
2019
- 2019-09-10 CN CN201921492906.4U patent/CN210222970U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112055062B (en) | Data communication method, device, equipment and readable storage medium | |
| CN210222970U (en) | Fire display panel circuit | |
| CN210721443U (en) | Data interface switching circuit and device | |
| CN200969129Y (en) | Wireless anti-theft alarm device for outdoor electric power transformer | |
| CN210324507U (en) | Sound-light alarm system based on five-prevention key | |
| CN211454271U (en) | Power supply control circuit applied to open-source hardware | |
| CN205608982U (en) | Infra red ray induction U dish | |
| CN210108512U (en) | Passive buzzer testing device | |
| CN110323941A (en) | Low-power consumption standby circuit | |
| CN202873113U (en) | LED (Light-emitting diode) indication lamp circuit and electronic device | |
| CN209560665U (en) | A kind of sick room calling system | |
| CN209774653U (en) | Driving circuit of programming education robot | |
| CN219016426U (en) | Novel power failure alarm circuit | |
| CN111309564A (en) | Sensor inquiry device | |
| CN109041384B (en) | Control circuit of double-color indicator lamp and electronic equipment | |
| CN205921578U (en) | Digit addressable illumination interface DALI's level translation circuit | |
| CN112450801A (en) | Display screen circuit, display screen and dust collector | |
| CN210807220U (en) | Manual alarm switch circuit | |
| CN212752153U (en) | Power supply voltage reduction module for intelligent bus station | |
| CN210640809U (en) | Master-slave control system and indication driving circuit thereof | |
| CN214507436U (en) | Power centralized control type fire-fighting emergency sign lamp circuit | |
| CN215621687U (en) | Control circuit for automobile touch control running water atmosphere lamp | |
| CN218997948U (en) | Numerical control electronic switch circuit | |
| CN218471154U (en) | 86 box control circuit with touch function | |
| CN213814373U (en) | Equipment controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |