CN208538279U

CN208538279U - SCM Based digital ansering grab

Info

Publication number: CN208538279U
Application number: CN201821213293.1U
Authority: CN
Inventors: 尚川川
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-30
Filing date: 2018-07-30
Publication date: 2019-02-22
Anticipated expiration: 2028-07-30

Abstract

The SCM Based digital ansering grab of the utility model, it is characterized by comprising single-chip microcontrollers, and be separately connected with single-chip microcontroller clock oscillation circuit, reset circuit, display circuit, race to be the first to answer a question key and adjustment key circuit, beginning and end key circuit, de-twitter circuit, phonation circuit.The utility model has the beneficial effects that, it is while remaining the basic function of original question-and-answer game apparatus, and to increase a series of utility function using single-chip microcontroller as the question-and-answer game apparatus of the novel intelligent of core, and simplifying its circuit structure, structure is simple, easy to use, at low cost, reliable for operation.

Description

SCM Based digital ansering grab

Technical field

The present invention relates to digital ansering grab technical field, specially a kind of SCM Based digital ansering grab.

Background technique

For question-and-answer game apparatus we that is when robbing answer for player as you know, player races to be the first to answer a question, and gets The player of topic answers a question.Question-and-answer game apparatus not only tests the reaction speed of player while player also being required to have enough the scope of one's knowledge With certain courage.Players are all stood on the same starting line, and fair and just principle is embodied.

Question-and-answer game apparatus is usually to be made of many circuits, and complex circuit, reliability is not high, and function is also fairly simple, especially Be when race to be the first to answer a question number it is many when, implement just it is more difficult.Question-and-answer game apparatus is also known as the first signal discriminator, which are mainly applied to The occasions such as various general knowledge tests, recreational activities.

Summary of the invention

The utility model in order to make up for the deficiencies of the prior art, it is simple, easy to use based on single to provide a kind of structure The digital ansering grab of piece machine.

The utility model is achieved by the following technical solution:

The SCM Based digital ansering grab of the utility model, it is characterised in that: including single-chip microcontroller, and and single-chip microcontroller The clock oscillation circuit that is separately connected, reset circuit, display circuit, race to be the first to answer a question key and adjustment key circuit, beginning and end by Key circuit, de-twitter circuit, phonation circuit.

Clock oscillation circuit includes the crystal oscillator X1 being connected between 18 feet of single-chip microcontroller and 19 feet, connects single-chip microcontroller 18 feet capacitor C2 and connection single-chip microcontroller 19 feet capacitor C1.

Reset circuit includes the capacitor C3 for connecting 9 foot of single-chip microcontroller, resistance R1, resistance R2, reset key reset1,9 foot warp Resistance R1 ground connection, reset key reset1 is in parallel with capacitor C3 after first connecting with resistance R2, connects 9 feet after in parallel.

Display circuit includes the common cathode charactron for connecting single-chip microcontroller, and common cathode charactron connects 5V power supply through resistance.

Racing to be the first to answer a question key and adjustment key circuit includes that several connecting with several feet of single-chip microcontroller race to be the first to answer a question input key, Further include connect the different foot of single-chip microcontroller race to be the first to answer a question time adjustment key, response time adjustment key plus a key, subtract one by Key；Single-chip microcontroller judges that currently entered is which races to be the first to answer a question key by reading the numerical value of foot.

Beginning and end key circuit include connect with 10 feet of single-chip microcontroller start to race to be the first to answer a question/embroidered purse enable key, with it is single The connection of 11 foot of piece machine stops key；Phonation circuit includes the loudspeaker LS1 connecting with 17 foot of single-chip microcontroller, loudspeaker LS1 difference Connection starts to race to be the first to answer a question/and embroidered purse enables key, stops key.

Start to race to be the first to answer a question/embroidered purse enabling key, enables key used as embroidered purse within a limited period of time.

De-twitter circuit includes the phase inverter U3A and NAND gate U2 connecting with 12 foot of single-chip microcontroller, and NAND gate U2 connection is each to rob Answer input key.

The utility model has the beneficial effects that being to remain original using single-chip microcontroller as the question-and-answer game apparatus of the novel intelligent of core While the basic function of beginning question-and-answer game apparatus, and increase a series of utility function, and simplify its circuit structure, structure is simple, makes With convenient, at low cost, reliable for operation.

Detailed description of the invention

Attached drawing is the structural schematic diagram of the utility model.

Fig. 1 is the functional module of the utility model, and Fig. 2 is question-and-answer game apparatus workflow, and Fig. 3 is integrated circuit, and Fig. 4 is clock Oscillation source circuit, Fig. 5 are reset circuit, and Fig. 6 is common cathode charactron circuit, and Fig. 7 races to be the first to answer a question key and adjustment key circuit, figure 8 be beginning, end key circuit, and Fig. 9 is de-twitter circuit, and Figure 10 is phonation circuit, Figure 11 work flow diagram, Figure 12 INT0 flow chart.

Specific embodiment

Attached drawing is a kind of specific embodiment of the utility model.

The SCM Based digital ansering grab of the utility model, including single-chip microcontroller, and be separately connected with single-chip microcontroller Clock oscillation circuit, display circuit, races to be the first to answer a question key and adjustment key circuit, beginning and end key circuit, debounce at reset circuit Circuit, phonation circuit.

The design Shi Yi races to be the first to answer a question as basic concept on eight tunnels.In view of utilizing AT89C51 according to the function of answering in limited time need to be set The forestalling-answer system that single-chip microcontroller and peripheral interface are realized will using the principle of the timer/counter timing and numeration of single-chip microcontroller Soft and hardware organically combines, when enabling the system to correctly carry out timing, while charactron being enable correctly to show Between.Keyboard output is done with switch, loudspeaker prompts.Simultaneity factor can be realized: in racing to be the first to answer a question, race to be the first to answer a question after only starting Effectively, if it is invalid for racing to be the first to answer a question before starting to race to be the first to answer a question；The time racing to be the first to answer a question limiting time and answering a question can set in 1-99s；It can It is that who player effectively races to be the first to answer a question and races to be the first to answer a question in vain with display, has music tip after correct key；When racing to be the first to answer a question the time and answering a question Between count-down show, when full after system timing automatically reset and master control forced resetting；Press key locking, in the active state, key It is invalid.Single-chip microcontroller price small in size is low, reliable and stable using convenience.Single-chip microcontroller has given many tasks to software programming It goes to realize, enormously simplifies peripheral hardware circuit, keep the realization of peripheral circuit simple and convenient.Single-chip microcontroller is used for forestalling-answer system, makes It has the characteristics such as circuit is simple, at low cost, reliable for operation in face of traditional question-and-answer game apparatus.

Control requires: this system uses Modular intelligent question-and-answer game apparatus, is widely applied in racing to be the first to answer a question match, each group difference There is one to race to be the first to answer a question button.Host has beginning and end, reset key.On backstage, host can be modified, and race to be the first to answer a question time and player The time answered a question is arranged, and it is 20s that the time is raced to be the first to answer a question under reset condition, and the time of answering a question is 30s.By plus key and subtracts key and repair Change the above-mentioned time, end key determines after having changed.The new time starts effectively, and after host's key starts, player starts to race to be the first to answer a question to have Effect, digital display screen, which is shown, races to be the first to answer a question time countdown and player number, prompts in last five seconds loudspeakers.If host does not have Press start button and player just races to be the first to answer a question and is considered as foul, digital display screen shows that the code name of offender, loudspeaker persistently occur.It is main Holding people can button to end, and a new round races to be the first to answer a question beginning.

This system is the eight road question-and-answer game apparatus for borrowing single-chip microcontroller and using modularized design, including button is raced to be the first to answer a question on 8 tunnels, timing is shown Show, prompt facility etc. (as needed can separately set or more set correlation function), starts to set with finishing control button, time limit, is various Correlation display adjusting function etc. (as needed can also separately set or more set correlation function).

Entrant's system, in addition to enjoying the right function of racing to be the first to answer a question button, there are also the prompt facilities and time prompting of hommization Function can also set and control the entertaining sexual function etc. showed in entrant's terminal by master control；The control button of master control system is opened Begin and finishing control is set as illegal to the behavior for swinging the person of answering in advance or obstructs according to the level of movable entrant, if being equipped with non- When method timing control function, the platform position number of the illegal person of racing to be the first to answer a question show at master control with publicity, to racing to be the first to answer a question in limited time and answer Problem is set as countdown in limited time, and has display reminding.

The main functional modules block diagram of system is as shown in Figure 1.

This system uses eight road question-and-answer game apparatus of modularized design, is widely applied in racing to be the first to answer a question match, each group has one respectively Race to be the first to answer a question button.One shares 8 key-press inputs, and respectively correspond 8 tunnel players races to be the first to answer a question key.

Host has beginning and end key.On backstage, host can be modified, and race to be the first to answer a question the time and when player answers a question Between be arranged, raced to be the first to answer a question under reset condition the time be 20s, answer a question the time be 30s.By plus key and subtract the key modification above-mentioned time, End key determines after having changed.The new time starts effectively, and after host's key starts, player starts to race to be the first to answer a question to be effective, digital-scroll technique Time countdown and player number are raced to be the first to answer a question in screen display, prompt in last 5 seconds loudspeakers.If host does not press start button And player just races to be the first to answer a question and is considered as foul, digital display screen shows that the code name of offender, loudspeaker persistently occur.Host can be by bond Beam, a new round race to be the first to answer a question beginning.

Single-chip microcontroller is the core of entire question-and-answer game apparatus, and internal circuit design is write with assembler language.It completes time parameter Setting, rob decoding according to number, save；Display；Output, rob by and answer countdown function etc..

In the design, there are the charactron group an of common cathode, four charactrons.The two of them display time, a vacancy, one Number is raced to be the first to answer a question in a display.Host successively presses reset key (RESET), starts to race to be the first to answer a question after start button.Can rob by: time-out is digital Pipe shows " FFF ", when robbing by exceeding schedule time or numeral method " FFF " after answer exceeds schedule time.If there is player to exist It is robbed in stipulated time by success, then also shows player's number while can racing to be the first to answer a question the time with answer, numeral method.If by opening Expression is raced to be the first to answer a question before beginning key in violation of rules and regulations, numeral method " FF " simultaneously shows player's number.

Control analysis

1, it in racing to be the first to answer a question, is raced to be the first to answer a question after only starting just effectively, if it is invalid for racing to be the first to answer a question before starting to race to be the first to answer a question.

2, racing to be the first to answer a question limiting time and the time answered a question can set in 1~99s.

3, can show it is that who player effectively races to be the first to answer a question and races to be the first to answer a question in vain, have music tip after correct key.

4, it races to be the first to answer a question the time and the time of answering a question count-down is shown, system automatically resets after the time is complete.

5,60s will be added to using embroidered purse response time by racing to be the first to answer a question in limiting time.

The basic functional principle of question-and-answer game apparatus: when racing to be the first to answer a question contest or calling, there are multiple signals simultaneously or be not sent into master simultaneously In circuit, registers inside question-and-answer game apparatus, and identify, record first number, while internal timer is started to work, It records the related time and generates timeout signal.In the entire question-and-answer game apparatus course of work, display circuit, sound circuit etc. will also bases The outside circuit output corresponding signal of actual conditions at scene.The workflow of question-and-answer game apparatus is divided into: system reset, is disobeyed normal flow Several parts such as example process.

The course of work of question-and-answer game apparatus

1, time or Reaction time are raced to be the first to answer a question if it is desired to adjusting, presses " adding one " key or " subtracting one " key enters adjustment state, at this time Can show that is set now races to be the first to answer a question time or response time value, such as think plus click " adding 1s " key in one second, if it is desired to subtract one second by The key that once " subtracts 1s ", can show the time after changing on time LED, and adjusting range is 0-99s, and when 0s subtracts 1s again to be jumped to Add 1s that can change to 0s again when 99,99s.

2, host presses " racing to be the first to answer a question beginning " key, has prompt tone, and immediately enters and race to be the first to answer a question countdown (when default 20s is raced to be the first to answer a question Between), it is raced to be the first to answer a question if any player, has prompt tone, and can shown its number and immediately enter and answer countdown (when default 30s is raced to be the first to answer a question Between), without racing to be the first to answer a question inquiry, so only first is effective by the player raced to be the first to answer a question.Zero count to be less than 5s can sound one per second Lower prompt tone.

3, such as during countdown, host wants to stop countdown can be at any time by " stopping " key, and system can be automatically into Preparation state waits host to enter by " racing to be the first to answer a question beginning " and races to be the first to answer a question timing next time.

If 4, host does not press " racing to be the first to answer a question beginning " key, and someone races to be the first to answer a question by racing to be the first to answer a question key, foul, and LED is upper constantly to be dodged Bright FF is with foul number and sound does not stop, until pressing " stopping " key.

The forestalling-answer system that AT89C51 single-chip microcontroller and peripheral interface are realized devises question-and-answer game apparatus, which increases new function Energy, simplifies circuit structure, has saved cost the reliability for improving system, is a practical engineering design.

The design of circuit of clock frequency

Single-chip microcontroller must could work under the driving of clock.There is a clock oscillation circuit inside single-chip microcontroller, only needs It wants an external oscillation source that can generate each unit that certain clock signal is sent to inside single-chip microcontroller, determines the work of single-chip microcontroller Make speed.Clock circuit is as shown in Figure 4.

9th foot RST of single-chip microcontroller is hardware reset end, as long as can be real by the high level for supporting continuous 4 machine cycles It now resets, each state of single-chip microcontroller is all restored to init state after reset, and circuit diagram is as shown in Figure 5.

Key and electrification reset circuit are constituted by reset key RESET1 and electrolytic capacitor C3, resistance R2 in Fig. 5.Due to Single-chip microcontroller is high level reset, so 9 foot RESET pins of single-chip microcontroller are in high level when key RESET1 is pressed, this When single-chip microcontroller be in reset state.After powering on, due to the slow charging of capacitor, 9 foot voltages of single-chip microcontroller are gradually from high to low Conversion, after a period of time, 9 feet of single-chip microcontroller are in stable low level state, and single-chip microcontroller electrification reset finishes at this time, is System program is executed since 0000H.

The design of display circuit

According to the actual situation using dynamic display method in the design.Through look-up table, by it on charactron It shows, wherein P0 mouthfuls are font code input terminal, and P2 mouthfuls low 3 are word selections input terminal.Herein we by table look-up by Font code gives the number that 7 segment numeral pipes are shown, 4 seven segment digital tubes display circuits are as shown in Figure 6.In the design, there is one The charactron group of common cathode, including four charactrons.Two of them show time, a vacancy, and number is raced to be the first to answer a question in a display.

Charactron is using 4 seven sections of common cathode charactrons in Fig. 6, wherein A-H sections of P0 the mouths for being coupled with single-chip microcontroller, Determine segment encode value by the P0 mouth data of single-chip microcontroller output, position code selection COM1, COM3, COM4 be coupled with single-chip microcontroller P2.0, P2.1, P2.2 are determined whom should currently be shown by single-chip microcontroller.There are also the resistance of eight 1K in figure, it is connected to P0 On mouth, as P0 mouthfuls of pull-up resistor, guarantee that P0 mouthfuls do not have data when exporting in high level state.

The design of keyboard scanning circuit

There are 8 to race to be the first to answer a question key-press input in the design by the way of stand-alone keypad, in the design, one start by Key, an end key add a key, the key each one that subtracts one in addition there are time adjustment key, response time adjustment key is raced to be the first to answer a question It is a.As shown in Figure 7.

The port P1.0-P1.7 that key is respectively connected to single-chip microcontroller is raced to be the first to answer a question for 8 in Fig. 7, and single-chip microcontroller is by reading P1.0- The value of P1.7 judges currently entered to be 8 and race to be the first to answer a question which of key.It races to be the first to answer a question time adjustment and response time adjustment connects To P3.3 the and P3.4 interface of single-chip microcontroller, adds one and subtract one by P3.5 the and P3.6 interface for being keyed to single-chip microcontroller.

In fig. 8, start and end key is connected to the 10 of single-chip microcontroller, 11 feet, it is compound to have used single-chip microcontroller 10,11 feet here I/O port function in function, single-chip microcontroller judge currently whether locate by the I/O port value of P3.0, P3.1 of 10,11 feet of reading In racing to be the first to answer a question beginning state or race to be the first to answer a question end state.

The electricity that the incoming level of eight keys of K1~K8 is formed by 74HC30 input nand gate U2 and 74LS04 reverser U3A Road changes incoming level.Circuit is exactly the debounce electricity being made of a 74HC30 input nand gate and 74LS04 reverser in Fig. 9 Road.

The design of phonation circuit

Design is as shown in Figure 10 herein.The 14 feet output of single-chip microcontroller has complex function in figure, has used single-chip microcontroller herein The I/O port function of 17 feet, single-chip microcontroller realize the waveform output driving loudspeaker of checker by the operation of timer internal LS1 sounding.

In all instructions, only RETI instruction can remove interruption activation marker.Error handler ERR is mainly complete At this function, other aftermaths transfer to the system after resetting to go to complete.

Reset can be divided into " cold start-up " and " thermal starting " by the historical situation of system when having reset.In order to enable the system to just It really determines which kind of Starting mode used, commonly uses electrosemaphore to distinguish.

Seen by the hardware components designed, the design is connect respectively using P3.2, P3.3 and races to be the first to answer a question time adjustment and Reaction time Regulation button, i.e., controlled respectively by external interrupt 0, external interrupt 1 race to be the first to answer a question, the adjustment of Reaction time.Therefore, the software of design Part can be divided into operational module, 0 module of external interrupt, 1 module of external interrupt.Analysis to flow chart, also point three parts are situated between It continues.

1, process when working (when the non-regulated time)

When normal operation in normal, the flowchart drawing of program such as Figure 11.

Initialization section: the setting including working method, initialization values to timer conter, when further including to racing to be the first to answer a question Between it is default with Reaction time, in addition, should also be opened to external interrupt 0, external interrupt 1.

Foul program part: including being operated intermittently to the foul display of player number, alarm.

In addition, due to that can be terminated at any time to the course of work in design requirement host, constantly to inquire stop key State, once it presses, the state after just returning to initialization；It will also be constantly by compared with 5S, when being less than 5S in countdown process When, it also needs to call sounding program；After 5S, and need, when it is equal to zero, will constantly return immediately compared with 0.

2, external interrupt 0(races to be the first to answer a question time adjustment) process

External interrupt 0(race to be the first to answer a question the time adjustment) flow chart see Figure 12.

Once just entering INT0 because of pressing for P3.2 corresponding keys and interrupting process.By constantly adding 1s to P3.4() and P3.5 (subtracting 1s) is constantly inquired, to be adjusted to racing to be the first to answer a question the time: discovery P3.4 is pressed, and is just raced to be the first to answer a question the time to original and is added 1s, hair Under existing P3.5, is just raced to be the first to answer a question to original the time and subtract 1s and call display program.

According to design requirement, when adding to 99s, if adding 1s again, the time becomes 0；After reducing to 0s, if subtracting one again second, Time becomes 99s.Therefore, current time should be compared in process in 99s or 0s, remakes out respective handling.

3, external interrupt 1(Reaction time adjusts) process

The adjustment of external interrupt 1(Reaction time) process and 1 process of external interrupt it is similar, but still introduce one here Under.

It is similar with time adjustment is raced to be the first to answer a question, once just enter INT1 because the corresponding button of P3.3 is pressed and interrupt process.By not It is disconnected that 1s is added to P3.4() and P3.5(subtract 1s) constantly inquired, to be adjusted to racing to be the first to answer a question the time: finding that P3.4 is pressed, just Time raced to be the first to answer a question to original and adds 1s, is found under P3.5, is just raced to be the first to answer a question to original the time and subtracts 1s and call display program.When adding to 99s, if Again plus 1s, then the time becomes 0；After reducing to 0s, if subtracting one again second, the time becomes 99s.Therefore, in process should to it is current when Between compare in 99s or 0s, remake out respective handling.

Claims

1. a kind of SCM Based digital ansering grab, it is characterised in that: including single-chip microcontroller, and be separately connected with single-chip microcontroller Clock oscillation circuit, display circuit, races to be the first to answer a question key and adjustment key circuit, beginning and end key circuit, debounce at reset circuit Circuit, phonation circuit.

2. SCM Based digital ansering grab according to claim 1, it is characterised in that: clock oscillation circuit includes connecting The crystal oscillator X1 between 18 feet and 19 feet of single-chip microcontroller is met, the capacitor C2 and connection single-chip microcontroller of 18 feet of single-chip microcontroller are connected 19 feet capacitor C1.

3. SCM Based digital ansering grab according to claim 1, it is characterised in that: reset circuit includes that connection is single Capacitor C3, resistance R1, resistance R2, the reset key reset1 of 9 foot of piece machine, 9 feet are grounded through resistance R1, reset key reset1 with Resistance R2 is in parallel with capacitor C3 after first connecting, and connects 9 feet after in parallel.

4. SCM Based digital ansering grab according to claim 1, it is characterised in that: display circuit includes that connection is single The common cathode charactron of piece machine, common cathode charactron connect 5V power supply through resistance.

5. SCM Based digital ansering grab according to claim 1, it is characterised in that: race to be the first to answer a question key and adjustment key Circuit includes that several connecting with several feet of single-chip microcontroller race to be the first to answer a question input key, further includes connecting the different foot of single-chip microcontroller Race to be the first to answer a question time adjustment key, response time adjustment key plus a key, the key that subtracts one；Single-chip microcontroller by read foot numerical value come Judge that currently entered is which races to be the first to answer a question key.

6. SCM Based digital ansering grab according to claim 1, it is characterised in that: beginning and end key circuit Including 10 feet with single-chip microcontroller connect start to race to be the first to answer a question/embroidered purse enables key, stops key with what 11 foot of single-chip microcontroller was connect；Sounding Circuit includes the loudspeaker LS1 connecting with 17 foot of single-chip microcontroller, loudspeaker LS1 be separately connected start to race to be the first to answer a question/embroidered purse enables key, stops Only key.

7. SCM Based digital ansering grab according to claim 1, it is characterised in that: de-twitter circuit includes and monolithic The phase inverter U3A and NAND gate U2 of 12 foot of machine connection, NAND gate U2 connection is each to race to be the first to answer a question input key.