CN201294831Y - Automated roasting device - Google Patents

Abstract

The utility model discloses an automated roasting device, which comprises a furnace body, a furnace lid, a grate, a spindle, a pulley, a belt, a spindle motor, a charcoal box, a spindle motor driving circuit, a keyboard processing circuit and a power supply circuit. The grate is used for clamping food to be roasted, and is arranged on the spindle in the furnace body; the keyboard processing circuit is used for receiving various program-controlled instructions; the spindle motor is connected with the spindle in the furnace through the belt and the pulley; the output end of the spindle motor driving circuit and the input end of the spindle motor are connected; the single chip of the keyboard processing circuit is connected with a plurality of buttons; and the output end of the power supply circuit is respectively connected with the power input end of the spindle motor, the power input end of the spindle motor driving circuit and the power input end of the keyboard processing circuit. The utility model realizes the automation of the roasting process, and has the advantages of low labor intensity, high efficiency, high utilization rate of the charcoal and diverse functions. Moreover, the utility model not only can roast the whole lamb, but also can roast other meats.

Description

A kind of automation spit

Technical field

The utility model be a kind of be the baking plant equipment of thermal source with the charcoal, relate to a kind of baking meat, automation the barbecue machine particularly full sheep of baking, that have fire grate.

Background technology

At present, barbecue machine mainly contains two kinds of charcoal baking stove and accessory and electric baking stove and accessorys.Use charcoal baking stove and accessory, the operator must often manually stir food, and makes the meat inequality of being heated easily, burnt sometimes the paste, and there is the big shortcoming of function singleness, inefficiency and labour intensity in this stove and accessory.There are problems such as power consumption is big, the thermal efficiency is low, cost height in electricity as the stove and accessory of thermal source.

Chinese patent publication number CN2926844, open day on 07 25th, 2007, the name of innovation and creation was called full sheep oven, and this application case discloses a kind of full sheep oven of charcoal formula that adopts driven by motor.Its weak point is that this utility model has only provided rough structural framing, technical characterictics such as the architectural feature of unspecified oven, functional characteristics, lack exploitativeness, and do not have the function of this baking oven further perfect, can not realize the baking of full sheep in automation ground, that is: just adopt reducing motor to solve the rotation problem of full sheep simply.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of automatic whole lamb spit, it adopts automatic control circuit can realize the automation of baking process, reduces labour intensity, has improved operating efficiency, simultaneously, make that baking food is heated evenly, good taste; This spit adopts the A.T.C circuit, thereby has improved the thermal efficiency of charcoal, energy savings; Simultaneously, this spit has many, the perfect characteristics of function.

The utility model is achieved by following technical proposals: the utility model comprises body of heater, be positioned at the body of heater top bell, the grate that is used for folding up baking food, main shaft, belt pulley, belt, spindle motor, the charcoal box that is used for holding charcoal, spindle motor drive circuit, be used to receive the keyboard treatment circuit and the power circuit of various program control instructions.Described spindle motor is connected with main shaft; Described grate is positioned at described body of heater inside, is installed on the main shaft that is positioned at body of heater; A side and main shaft that described belt pulley is positioned at main shaft are fixed together, and described spindle motor and belt pulley are positioned at the same side of main shaft, and described spindle motor is connected with main shaft in the body of heater by belt and belt pulley, drives main shaft and grate and rotates simultaneously; The output of described spindle motor drive circuit is connected with the input of spindle motor; The single-chip microcomputer U1 of described keyboard treatment circuit links to each other with a plurality of buttons; The output of described power circuit links to each other with the power input of described spindle motor, the output of described power circuit links to each other with the power input of described spindle motor drive circuit, and the output of described power circuit also links to each other with the power input of described keyboard treatment circuit.

Described bell top has exhaust smoke hole, and the outside is equipped with handle; Described bell connects body of heater by the hinge that is positioned at the bell rear side, is axle with junction, hinge place, and bell can open arbitrarily angled with respect to body of heater; The locating button that is positioned at described bell rear side adopts bolt to be connected with body of heater or welding method is fixed, the standing portion of locating button tilt and the angle of horizontal plane greater than 90 °.

Described grate is buckled by up and down two single nets, gear shift and snap close is formed, and described single net comprises a plurality of oil-guiding rails, and described gear shift has been smashed three and kept off tongues; Described single net outer contour shape is the hourglass shape, along the y direction left-right symmetry; Described oil-guiding rail is seen into along X direction, the likeness in form dovetail shaped; Described main shaft passes the transverse central axis of the net that places an order of described grate, and described two single Netcoms up and down cross the gear shift button, the snap close that are placed on four jiaos of places and link to each other.

The charcoal box that described charcoal box is a drawing out type, by the upper strata that is used to hold charcoal and the lower floor that is used to connect ash form; Described charcoal box both sides also are provided with oil trap, and the position, both sides of the edge of described oil trap and grate is corresponding; The front end of described charcoal box is provided with handle.

Dismountable handle that shakes is installed on the described belt pulley.Furnace cradle is positioned at the body of heater below, but direction-caster links to each other with the furnace cradle bottom with the break-in castor.

The utility model also comprises automatic temperature control circuit, and it is made up of temperature sensor, fan, fan electromotor and fan electromotor drive circuit; Temperature sensor is positioned at inboard wall of furnace body, and the output of temperature sensor links to each other with single-chip microcomputer U1, and fan and fan electromotor are positioned at furnace body inside; The output of described fan electromotor drive circuit is connected with the input of fan electromotor, is used to drag fan electromotor and rotates.

The model that described fan electromotor drive circuit is produced by Atmel company is that ATmega8515 single-chip microcomputer U1, resistance R 1 and R21-R25, photoelectrical coupler U4, NPN type triode Q4 and Q7, N raceway groove COMS pipe Q2, fan electromotor B2, hand switch SW2, button S6, capacitor C 1-C3 and a crystal oscillator Y1 form; Triode Q7 and resistance R 25 connect to form the fan electromotor holding circuit; The fan electromotor drive circuit of being made up of photoelectrical coupler U4, resistance, triode links to each other with single-chip microcomputer U1; The anode of diode D2 links to each other with the positive pole of spindle motor B2, and the negative electrode of diode D2 links to each other with the negative pole of spindle motor B2, and diode D2 and spindle drive motor B2 constitute the protection loop of COMS pipe Q2.

The method that automatic temperature control circuit keeps the inner constant temperature of body of heater, realize by following steps:

(1) temperature sensor sends the temperature value T1 that collects to single-chip microcomputer U1, temperature value T1 that collects and lower temperature value TL subtract each other, the difference that obtains is deposited in the variables A, time-delay a period of time, again the temperature T 2 that collects is for the second time subtracted each other with lower temperature TL, the difference that obtains is deposited among the variable B, this difference of twice is subtracted each other the difference of trying to achieve again deposit in the variable Y;

(2) if variable Y greater than 0, shows that temperature is the rising shape, if temperature T 2, shows not fully burning of charcoal less than lower temperature TL, single-chip microcomputer U1 sends a control signal and gives fan electromotor, starts fan and rotates, and charcoal is fully burnt;

If temperature T 2 is greater than lower temperature TL, single-chip microcomputer also will remake once to be judged, if greater than higher temperature TH, show charcoal fully burning, single-chip microcomputer U1 sends a control signal and gives fan electromotor, stops fan and rotates, if less than higher temperature TH, allow fan be rotated further;

(3) if variable Y less than 0, shows that temperature is the decline shape, single-chip microcomputer U1 judges the temperature that collects again, if temperature T 2 greater than higher temperature TH, shows that charcoal burning is very abundant, single-chip microcomputer U1 sends a control signal and gives fan electromotor, stops fan and rotates;

If T2 is less than higher temperature TH, single-chip microcomputer also will remake once to be judged, if greater than lower temperature TL, fan still stops operating, if less than lower temperature TL, not fully burning of charcoal is described, single-chip microcomputer U1 sends a control signal and gives fan electromotor, starts fan and rotates, and the charcoal combustion is fully burnt;

(4) continue to repeat said process from step (1).

Described spindle motor drive circuit is made up of single-chip microcomputer U1, resistance R 1, R9-R14, photoelectrical coupler U3, NPN type triode Q3 and Q8, N raceway groove COMS pipe Q1, spindle motor B1, hand switch SW1, button S6, capacitor C 1-C4 and a crystal oscillator Y1; Connect to form spindle motor B1 holding circuit by triode Q8 and resistance R 14; The direct current motor drive circuit of being made up of photoelectrical coupler U3, resistance, triode links to each other with single-chip microcomputer U1; The anode of diode D1 links to each other with the positive pole of spindle motor B1, and the negative electrode of diode D1 links to each other with the negative pole of spindle motor B1, and diode D1 and spindle drive motor B1 constitute the protection loop of COMS pipe Q1.

Adopt the method for the full sheep of programme-controlled automated manner baking, realize by following several stages: first stage, spindle motor velocity of rotation v1 was slow, and the time, ST1 was longer; Second stage spindle motor velocity of rotation v2 accelerates, and the time is the longest; Three phases spindle motor velocity of rotation v3 slows down once more, and the time, ST3 was the shortest, and the phase III finishes, and finishes the baking task, wherein ST2〉ST1〉ST3, v2 is greater than v1 and v3.

It is made up of described keyboard control circuit single-chip microcomputer U1, button S1-S6, resistance R 1-R6, capacitor C 1-C3 and a crystal oscillator Y1; Button S1-S6 links to each other with single-chip microcomputer U1 respectively, and connects with pull-up resistor R2-R6 respectively and receive on the 5V voltage; Button S1 starts/stops key, button S2 is the multiplexing button of function conversion/confirm, be used for speed governing, regularly, the baking mode select three kinds between the difference in functionality switching and set in various parameters and to press this key after finishing and confirm, button S3 is a Pause key, button S4, S5 go up to select, select down key, be used to adjust speed governing, timing and functional parameter under the states such as baking mode is set, button S1, S2, S4 and S5 are multiplexing button.

Described power circuit is made up of relay operating circuit and DC power supply circuit; Described relay operating circuit is made up of single-chip microcomputer U1, resistance R 26, R27, relay K 1, triode Q6, power output interface JP1, diode D3, light emitting diode DS7, button S6, capacitor C 1-C3 and a crystal oscillator Y1; Forming the relay operating circuit by relay K 1, resistance, triode links to each other with single-chip microcomputer U1; The output signal of single-chip microcomputer U1 is loaded into the coil two ends of relay K 1, the adhesive of control relay K1 and disconnection through triode Q6; The anode of diode D3, negative electrode and the two ends of relay K 1 link to each other, and diode D3 and relay K 1 are formed the holding circuit of triode Q6; Described relay operating circuit is provided with battery interface JP2 and power output interface JP1 parallel connection, and being used for is not having under the situation of civil power to provide 24V and 5V DC input voitage by storage battery power supply; Described DC power supply circuit provides 24V and two kinds of DC voltages of 5V.

Compared with prior art, the utility model beneficial effect is:

1. can realize the automation of baking process by automatic control circuit, it is low to have reduced labour intensity, has improved high efficiency, simultaneously, makes that baking food is heated evenly, good taste.

2. multiple functional, simple to operate.This spit has three kinds of working methods---and automatic, semi-automatic and manual.Wherein, the operator is switched automatically and the semi-automatic work mode by the button in the keyboard treatment circuit.Automated manner is programme-controlled, time that motor is rotated and the rotating speed program of enrolling that combines, and the user only needs to select gear get final product according to different taste, whole baking end-of-job, warning circuit can send chimes of doom, and the prompting operator takes out food.Semi-automatic mode is that operator oneself manually sets the baking time and the speed of mainshaft by the keyboard treatment circuit, whole baking end-of-job, and warning circuit can send chimes of doom, reminds the operator to take out food.Manual mode is that spindle motor does not move, and the operator carries out artificial baking by shaking the main shaft handle.

3. can keep constant temperature in the stove automatically, make the baking process remain at optimum temperature, make reasonable utilization of energy.Single-chip microcomputer in the automatic control circuit is differentiated the temperature value that temperature sensor transmits, if temperature is lower, illustrates that charcoal burning is insufficient, and the cross-ventilation on charcoal surface is accelerated in drive fan work at this moment, and charcoal is fully burnt; If temperature is moderate, illustrate that charcoal burning is more abundant, at this moment stop fan work.

4. reduce the secondary pollution that the baking food oil impregnate causes.Comprise many oil-guiding rails in the grate, see into, the likeness in form dovetail shaped from X direction; The approximate hourglass shape of the outer contour shape of single net of grate is along the y direction left-right symmetry; The oil trap of charcoal box both sides and the position, both sides of the edge of grate are corresponding.In the baking process, the oil that oozes out in the meat, utilize the sticky nature and the terrestrial gravitation of oil, direction along the oil-guiding rail tendency flows, focus on four angle a, b, c, the d of grate, collected by the oil trap of charcoal box both sides, thereby, solve oil droplet and to charcoal, caused that the charcoal second-time burning produces the problem of many pernicious gases, and got rid of unhygienic factor.

5. the full sheep of baking is easy for installation.Grate is buckled by up and down two single nets, gear shift and snap close is formed, and gear shift has been smashed three and kept off tongues, and to adapt to the baking food of different-thickness, snap close is used for clamping the food that is placed in the grate.

6. dc source is provided with extra battery interface, is not having under the situation of civil power, uses storage battery power supply, for spindle motor, fan electromotor and hardware circuit provide 24V and 5V voltage, guarantees that spit finishes the baking task.

7. adopt the method that increases body of heater, bell, grate, charcoal box, the function of spit is further expanded, more food of baking of energy, two full sheep of baking have simultaneously been improved operating efficiency.

Description of drawings

Fig. 1 is a system block diagram.Wherein 101 is dc sources, the 102nd, and automatic control circuit, the 103rd, mechanical driving device.

Fig. 2 is the spit front view.Wherein 201 is exhaust smoke holes, the 202nd, and grate, the 203rd, bell, the 204th, shake handle, the 205th, belt pulley, the 206th, electric control box, the 207th, belt lid, the 208th, spindle motor, the 209th, castor (orientation), the 210th, bell handle, the 211st, bell support bar, the 212nd, main shaft, the 213rd, fan, the 214th, body of heater, the 215th, furnace cradle, the 216th, castor (but break-in), the 217th, charcoal box, the 218th, charcoal box cabinet.

Fig. 3 (a) is the spit rearview, and Fig. 3 (b) is the locating button perspective view.Wherein 301 is locating buttons, the 302nd, and hinge, the 303rd, fixing hole, the 304th, the standing portion of locating button, the 305th, the horizontal component of locating button.

Fig. 4 is the spit vertical view.Wherein 401 is temperature sensors, the 402nd, and belt.

Fig. 5 (a) is spit grate figure, and Fig. 5 (b) is a gear shift buckle structure schematic diagram, and Fig. 5 (c) is the single web frame schematic diagram among Fig. 5 (a).Wherein 501 is single net a, the 502nd, and single net b, the 503rd, gear shift button, the 504th, snap close, the 505th, oil-guiding rail, the 506th, retaining tongue.

Fig. 6 is spit charcoal box figure.Wherein 601 is ash-falling holes, the 602nd, and charcoal box handle, the 603rd, oil trap, the 604th, connect grieshoch.

Fig. 7 is the hand main shaft figure of spit.Wherein 701 is bearing blocks.

Fig. 8 is the automatic control circuit block diagram.Wherein 801 is AVR single-chip microcomputers, the 802nd, and keyboard circuit, the 803rd, time display circuit, the 804th, temperature display circuit, the 805th, motor-drive circuit, the 806th, indication lamp drive circuit, the 807th, buzzer drive circuit, the 808th, fan drive circuit, 809 relay operating circuits.

Fig. 9 is keyboard treatment circuit figure.

Figure 10 is time display circuit figure.

Figure 11 is temperature display circuit figure.

Figure 12 is spindle motor drive circuit figure.

Figure 13 is indication lamp drive circuit figure.

Figure 14 is warning circuit figure.

Figure 15 is fan electromotor drive circuit figure.

Figure 16 is the baking curve map.

Figure 17 keeps the constant temperature flow chart.

Figure 18 is the relay working circuit diagram.

Figure 19 is a power circuit diagram.

Figure 20 is the mechanical construction drawing of lengthening spit.Wherein 2001 is exhaust smoke holes, the 2002nd, and grate 1,2003rd, bell, the 2004th, main shaft, the 2005th, body of heater, the 2006th, grate 2,2007th, charcoal box.

Figure 21 is the grate figure of lengthening spit.

Figure 22 is the charcoal box of lengthening spit.Wherein 2201 is oil traps, the 2202nd, and charcoal box handle, the 2203rd, connect grieshoch.

Figure 23 is the bell of lengthening spit.Wherein 2301 is bell handles.

Figure 24 is the body of heater of lengthening spit.Wherein 2401 is temperature sensors.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

The 1st embodiment:

As shown in Figure 1, whole system comprises dc source 101, automatic control circuit 102 and mechanical driving device 103.Dc source 101 provides various operating voltages for automatic control circuit 102; Described automatic control circuit 102 sends various control signals, controls described mechanical driving device 103 according to programmed instruction work.

In conjunction with Fig. 2 and Fig. 3 a, spit comprises exhaust smoke hole 201, grate 202, bell 203, shakes handle 204, belt pulley 205, electric control box 206, belt lid 207, spindle motor 208, castor (orientation) 209, bell handle 210, bell support bar 211, main shaft 212, fan 213, body of heater 214, furnace cradle 215, castor (but break-in) 216, charcoal box 217 and charcoal box cabinet 218.Furnace cradle 215 carrying body of heater 214, spindle motor 208 and electric control boxes 206; Bell 203 links to each other with body of heater 214, can not only keep the heat in the stove, can also prevent that dust from entering body of heater; The exhaust smoke hole 201 of bell 203 tops is discharged body of heater with the smog that produces in the baking process; Be positioned at the handle 210 handled easily person opening and closing bells in bell 203 outsides; Body of heater 214 is the main devices that hold food, is fixed with charcoal box cabinet 218, fan 213, main shaft 212 in the body of heater 214; Charcoal box cabinet 218 is the devices that hold drawing out type charcoal box 217; The charcoal box is two-layer about in the of 217 minutes, and ground floor holds charcoal, and the charcoal ash of after-flame can be fallen the second layer naturally by ash-falling hole 601---and connect grieshoch 604, the oil trap 603 of both sides is collected the oil that oozes out from food; Fan 213 can increase furnace air and flow, carry air or oxygen that charcoal is fully burnt for the carbon surface layer in the charcoal box 217, air supply direction is changed thinking in the past, becomes exhausting, both can achieve the above object, also can be the part smoke zone of charcoal burning generation from spit; Belt pulley 205 links to each other with main shaft 212, and spindle drive motor 208 drives main shaft 212 rotations by belt 402 and belt pulley 205, and processed food is heated evenly; Belt lid 207 protection operators' safety can also be prevented dust; Can hand main shaft 212 by the handle 204 that shakes that is installed on the belt pulley 205, artificial baking; Grate 202 is packed on the main shaft 212, and it can not only be fixed food, can also increase the heating surface area of food; Electric control box 206 is guidance panels that the operator controls spit; Castor (orientation) 209, castor (but break-in) 216 link to each other with furnace cradle 215 bottoms, and wherein castor (orientation) 209 rolls along a certain fixing angle only; Castor (but break-in) 216 can be rotated to arbitrarily angled rolling, makes things convenient for body of heater to move towards any direction on the ground; Bell support bar 211 can make bell 203 opening degrees be fixed on a certain position.

Turning-up devices after Fig. 3 represents the unlatching of bell and prevents body of heater.Hinge 302 is positioned at the junction of bell 203 and body of heater 214, is used to connect bell 203 and body of heater 214; With junction, hinge 302 place is axle, and bell 203 can open arbitrarily angled with respect to body of heater 214.

Three fixing holes 303 are arranged on the horizontal component 305 of locating button 301, be used for construction bolt, connect body of heater 214, or the horizontal component 305 of locating button 301 can adopt also the method for welding and body of heater 214 to be fixed together.The standing portion 304 of locating button 301 tilts, and the angle that is horizontal plane is greater than 90 °.Locating button 301 prevents that bell 203 from too opening, and causes to move after the body center of gravity unbalancely, turns over behind the body.

As shown in Figure 4, temperature sensor 401 places body of heater 214 inwalls, and temperature sensor 401 feeds back to temperature in the stove that collects in the single-chip microcomputer.

Fig. 5 is the structure chart of spit grate.Grate comprises single net a501, single net b502, gear shift button 503 and snap close 504.

The transverse central axis of single net a501 links to each other with main shaft 212 in the grate, single net a501, single net b502 one on the other and placement direction identical, the gear shift button 503 that the centre is located by two jiaos (a, c) above the transverse axis is connected with the snap close 504 that following two jiaos (b, d) locate.The oil-guiding rail 505 in single net longitudinal axis left side is seen into the likeness in form dovetail shaped from X direction.Its outer contour shape approaches the hourglass shape, and middle oil-guiding rail 505 is along the y direction left-right symmetry.Three retaining tongues 506 are arranged, so that the operator selects different positions, to adapt to the baking food of different-thickness in the gear shift button 503.Open snap close 504, the food of handling well is placed on single net a501, more firm in order to allow food place, at the food different-thickness, regulate gear shift button 503, make two angles (a, c) of single net b502 be in three alternative grade of tongues 506 one of them, lock snap close 504 and finish placement.In the baking process, constantly there is oil in meat, to ooze out, utilizes the sticky nature and the terrestrial gravitation of oil, flow, focus on four angle a, b, c, the d of grate along the direction of oil-guiding rail 505 tendencies.

As shown in Figure 6, spit charcoal box comprises ash-falling hole 601, charcoal box handle 602, and oil trap 603 connects grieshoch 604.The charcoal box divides two-layer up and down, ground floor holds charcoal, the charcoal ash of after-flame can be fallen the second layer naturally by ash-falling hole 601---connect grieshoch 604, the oil trap 603 of both sides is corresponding with the position, both sides of the edge 507 of grate 202, focuses on the oil seepage on 202 4 angles of grate (a, b, c, d).Solved oil droplet like this and to charcoal, caused that the charcoal second-time burning produces the problem of many pernicious gases, has got rid of unhygienic factor.The operator utilizes charcoal box handle 602 that the charcoal box is taken out, and continues charcoal and charcoal box cleaning.

Fig. 7 is the hand main shaft figure of spit.Belt pulley 205 drives main shaft 212 rotations, and grate 202 is packed on the main shaft 212, and it can not only be fixed food, can also increase the heating surface area of food, and the operator can hold the handle 204 that shakes that is installed on the belt pulley 205 and shake main shaft, carries out artificial baking.It is detachable to shake handle 204, when using motor, should take off shaking handle 204.The manual baking function that handle 204 has been realized spit is shaken in installation.Bearing block 701 is used for the fixing of main shaft 212 and body of heater 214.

As shown in Figure 8, automatic control circuit comprises single-chip microcomputer 801, keyboard 802, time display circuit 803, temperature display circuit 804, motor-drive circuit 805, drive circuit of indicator 806, buzzer drive circuit 807, fan drive circuit 808 and relay operating circuit 809.Described monolithic 801 machines are connected with keyboard 802, time display circuit 803, temperature display circuit 804, motor-drive circuit 805, drive circuit of indicator 806, buzzer drive circuit 807, fan drive circuit 808 and relay operating circuit 809 respectively.Keyboard 802 sends control signal to single-chip microcomputer 801, and single-chip microcomputer 801 other circuit of control are according to control instruction work.

Fig. 9 is keyboard treatment circuit figure.It is that ATmega8515 single-chip microcomputer U1, button S1-S6, resistance R 1-R6, capacitor C 1-C3 and a crystal oscillator Y1 form by the model that Atmel company produces.Button S1 links to each other with 13 pin of single-chip microcomputer U1, and button S2 links to each other with 14 pin of single-chip microcomputer U1, and button S3 links to each other with 15 pin of single-chip microcomputer U1, and button S4 links to each other with 16 pin of single-chip microcomputer U1, and button S5 links to each other with 17 pin of single-chip microcomputer U1.Resistance R 2 connects with button S1 and receives+5V voltage on, resistance R 3 connects with button S2 and receives+5V voltage on, resistance R 4 connects with button S3 and receives+5V voltage on, resistance R 5 receives with button S4+5V voltage on, resistance R 6 connects with S5 and receives+5V voltage on.Resistance R 2-R6 is a pull-up resistor, allows single-chip microcomputer U1 can discern high and low level.18,19 two the pin cross-over connection crystal oscillator Y1 of single-chip microcomputer U1 and trimming capacitor C 1, C2 form feedback circuit, have constituted a stable self-excited oscillator.Resistance R 1, capacitor C 3 and button S6 composition are pressed the key level reset circuit, link to each other with 9 pin of single-chip microcomputer, realize resetting through resistance R 1 and 5V power connection by making reset terminal.Button S1 starts/stops key, and wait S1 key was pressed after system powered on, and when S1 is pressed, has a pulse to occur, and system begins initialization, enters duty; After system started, if push button S1 once more, complete machine quit work.Button S2 is a function conversion/confirm multiplexing button, can carry out speed governing, regularly, the switching between (the baking mode is selected) three kinds of difference in functionalitys automatically, and light the current functional status of indication by indicator lamp LMP1; The S2 that can also push button after various parameters are set end confirms.Button S3 is a Pause key, when system needs operation suspension, and the S3 that pushes button, system enters resting state, and process is pressed into storehouse; The S3 that pushes button once more, system wake-up returns to previous duty, continues to finish follow-up setting task.Button S4, S5 are upward choosings, select key down, can regulate the parameter of various functions, include speed governing, timing and the baking mode is set.When setting the speed governing parameter, carry out the adjusting that increases progressively, successively decreases of main axis rotation speed with S4, S5, the adjusting of main axis rotation speed is recently to realize by the duty of the output pulse width modulation signal PWM that adjusts single-chip microcomputer U1, whenever press one-touch S4 or S5, the PWM dutycycle can go up jumps or jumping 20% down, the stepped intervals of corresponding spindle motor rotating speed adjustment is 5 rev/mins, main axis rotation speed with " rev/min " be step units, adjustable scope is respectively 5 rev/mins, 10 rev/mins, 15 rev/mins.When setting timing parameters, be provided with button S4, S5, the S5 key selects button as the position, the S4 key selects button as section, button S5 can switch between individual, ten, hundred of time, button S4 carries out every and goes up the adjustings that numeral 0-9 circulations increase progressively, and timing is minute being step units.When setting the baking mode, carry out the switching of different baking modes with button S4, S5, that the baking mode comprises is tender, in, always.

Figure 10 is time display circuit figure.Described time display circuit is used to refer to the residue baking time of automated manner or semi-automatic mode.It is made up of single-chip microcomputer U1, three digital display tube L1-L3, resistance R 1, button S6, capacitor C 1-C3 and crystal oscillator Y1.The a-g pin of digital display tube L1-L3 all links to each other with the 1-7 pin of single-chip microcomputer U1, and the K pin of digital display tube L1 links to each other with 21 pin of single-chip microcomputer U1, and the K pin of digital display tube L2 links to each other with single-chip microcomputer 22 pin, and the K pin of digital display tube L3 links to each other with 23 pin of single-chip microcomputer U1.When the operator adopted automated manner, time display circuit showed the residue baking time, and displayable scope is 0-300, and the time of converting to is 0 hour-5 hours, and this circuit shows in the countdown mode, and minute being step units.Adopt semi-automatic mode, the operator need set the baking time, and the scope that can set is 0-999.Switch to timing mode with the button S2 among Fig. 9, carry out the position with the button S5 among Fig. 9 again and select, charactron L1, L2, L3 are respectively individual, ten and hundred of indication time.Because charactron is for being total to anode, gating when COM is high level, begin in the following order to set: as individual position → ten → hundred → individual position, 21 pin (COM1) of pressing S5 key single-chip microcomputer U1 are high level, charactron L1 gating, this bit digital is the flicker shape, the S4 key section of pressing again among Fig. 9 of carrying out is selected, and the numeral on the charactron increases progressively from the 0-9 circulation, shows with the MCU driving charactron, light for the section light emitting diode of cathode terminal input low level with regard to conducting, the Duan Ze of input high level does not light.Press the S5 key gating charactron L2 (ten) among Fig. 9 after individual position configures again, then press the S4 key section of the carrying out selection among Fig. 9, hundred setting by that analogy, timing is minute being unit.

Figure 11 is temperature display circuit figure.Described temperature display circuit is used to refer to the current temperature value of body of heater inside.Temperature sensor U5, resistance R 1 and R7, button S6, capacitor C 1-C3 and a crystal oscillator Y1 that it is 18B20 by single-chip microcomputer U1, three digital display tube L4-L6, models form.The a-g pin of digital display tube L4-L6 all links to each other with the 1-7 pin of single-chip microcomputer, and the K pin of digital display tube L4 links to each other with single-chip microcomputer 24 pin, and the K pin of digital display tube L5 links to each other with single-chip microcomputer 25 pin, and the K pin of digital display tube L6 links to each other with single-chip microcomputer 26 pin.2 pin DQ of temperature sensor are data signal I/O end, link to each other with single-chip microcomputer 10 pin.Temperature sensor 1 pin GND is power supply ground.Temperature sensor 3 pin VDD are external power supply input.The temperature sensor output port is open-drain output, and output port 2 pin connect and draw resistance.The temperature sensor measurement temperature range is-55 ℃-+125 ℃, and operating voltage is the scope of 3V-5.5V, and intrinsic thermometric resolution ratio is 0.5 ℃.After the startup, temperature sensor U5 sends temperature in the detected stove to single-chip microcomputer U1, and single-chip microcomputer U1 shows temperature by charactron L4-L6 again, and charactron L4, L5, L6 distinguish individual, ten, hundred of corresponding temperature value.

Figure 12 is spindle motor drive circuit figure.It is made up of single-chip microcomputer U1, resistance R 1 and R9-R14, photoelectrical coupler U3, NPN type triode Q3 and Q8, N raceway groove COMS pipe Q1, spindle drive motor B1 (motor is a dc motor), hand switch SW1, button S6, capacitor C 1-C4 and a crystal oscillator Y1.The direct current motor drive circuit of being made up of photoelectrical coupler U3, resistance, triode links to each other with 39 pin of single-chip microcomputer.The rotating speed that changes spindle motor gets final product by changing on-off circuit driving pulse width dutycycle.The cycle of pulse is certain, and the dutycycle of pulse width (dutycycle=(pulse width/cycle) * 100%) changes with the size of input signal is corresponding.When the change in duty cycle of spike train, the interval of switching tube (COMS) turn-on and turn-off changes, and the average voltage, the average current that provide to spindle drive motor also just change, and therefore makes rotating speed of motor adjusted.Photoelectrical coupler U3 makes the variation of back one-level circuit not have influence on previous stage.Utilize triode Q8 and resistance R 14 to form holding circuit, when motor overload, loop current is excessive; if resistance R 14 two ends pressure drops are greater than 0.7V, triode Q8 conducting, the grounded-grid of COMS pipe Q1; Q1 ends, and electric motor loop disconnects and quits work, and plays a protective role.The clutter that carries in capacitor C 4 effective filtering voltages, it is more level and smooth that voltage becomes, and the rotation of direct current generator is more steady.The anode of diode D1 links to each other with the positive pole of spindle motor B1, and the negative electrode of diode D1 links to each other with the negative pole of spindle motor B1, and diode D1 and spindle drive motor B1 constitute the protection loop of COMS pipe Q1; Because the inductance among the spindle motor B1 can store magnetic field energy; when COMS pipe Q1 turn-offs; the terminal voltage of its output will produce the very high spike of amplitude, and this spike can in time discharge through the loop of diode D1 and spindle drive motor B1 formation, and Q1 is not breakdown for protection COMS pipe.Power supply also can directly insert from power supply by hand switch, and manual operation starts/stop spindle motor.

The control of spindle motor work divides three kinds of modes, and is automatic, partly full-automatic and manual, controls its rotating speed by single-chip microcomputer output pulse width modulation signal (PWM).Automated manner adopts programme-controlled, the time and the rotating speed that allow motor rotate combine, as shown in figure 16, rule according to baking, divide three phases with whole baking process: first stage, velocity of rotation v1 was slow, time, ST1 was longer, and the meat of the inside is heated, and avoided the phenomenon of outer Jiao Lisheng to take place; Second stage velocity of rotation v2 accelerates, and the time, ST2 was the longest, made whole meat thermally equivalent; Three phases velocity of rotation v3 slows down once more, and the time, ST3 was the shortest, and the surface of roast meat makes the epidermis delicious and crisp.There is following relation: ST2 in the baking time in each stage〉ST1〉ST3; The spindle motor rotating speed in each stage exists following relation: v2 greater than v1 and v3.Programme-controlled above-mentioned rule, operating will be simply, conveniently.Select different baking taste (tender, in, old), correspondingly, in each stage, the rotating speed of spindle motor and baking time also are different.Switch to automatic transmission (the baking mode is selected) with the button S2 among Fig. 9, light emitting diode DS6 lights, and carries out the setting of baking taste again with button S4, S5, tender, in, represented three kinds of different baking tastes always.Which kind of taste the operator selects, and corresponding diode DS1-DS3 will light, with indication.After a certain automatically working was all finished, single-chip microcomputer can send a control signal, and buzzer sounds the alarm, and reminded the operator to take out food.

Semi-automatic mode, the operator sets the baking time and the speed of mainshaft arbitrarily, with the button S2 among Fig. 9 carry out regularly, the switching of speed governing, select which kind of mode of operation, corresponding diode DS4, DS5 will light, with indication work at present pattern.Carrying out parameter with button S4, S5 again sets, when setting the speed governing parameter, carry out the adjusting that increases progressively, successively decreases of main axis rotation speed with button S4, S5, the adjusting of main axis rotation speed is that the duty of adjusting the output pulse width modulation signal PWM of single-chip microcomputer U1 is recently realized, whenever pressing one-touch PWM dutycycle can go up jumping or jump 20% down, the stepped intervals of corresponding spindle motor rotating speed adjustment is 5 rev/mins, main axis rotation speed with " rev/min " be step units, adjustable scope is respectively 5 rev/mins, 10 rev/mins, 15 rev/mins.When setting timing parameters, be provided with button S4, S5 among Fig. 9, the S5 key selects button as the position, the S4 key selects button as section, button S5 can switch between individual, ten, hundred of time, button S4 carries out every and goes up the adjustings that numeral 0-9 circulations increase progressively, and timing is minute being step units.This semi-automatic mode is still stirred food without the operator, and spindle motor is with a certain speed uniform rotation, is controlled by the operator to food brush oil and the time and full time of smearing the good flavoring of prior proportioning.

Manual mode is that spindle motor does not move, and the hand main shaft of operator carries out artificial baking, and promptly this spit both can be realized the automation baking food, also can carry out manual operation, dual-use.

Figure 13 is indication lamp drive circuit figure.It is made up of single-chip microcomputer U1, resistance R 1, R15-R20, light emitting diode DS1-DS6, button S6, capacitor C 1-C3 and a crystal oscillator Y1.Light emitting diode DS1-DS6 receives 34 pin, 33 pin, 32 pin, 27 pin, 28 pin, 12 pin of single-chip microcomputer U1 respectively with after resistance R 15-R20 connects among the figure.The operator carries out timing, speed governing, the switching of (baking mode) three kinds of patterns automatically with the button S2 among Fig. 9, select which kind of mode of operation, corresponding diode DS4-DS6 will light, to indicate the work at present pattern: DS4 represents to enter the timing working state, DS5 represents to enter setting spindle motor rotary speed working state, and DS6 represents to select baking mode duty.When the operator selects automatically (the baking mode is selected) mode baking, switch to automatic transmission with the button S2 among Fig. 9, carry out the setting of baking mode again with button S4, the S5 among Fig. 9: tender, in, represented three kinds of different baking tastes always.Which kind of taste the operator selects, and corresponding diode DS1-DS3 will light, and to indicate: DS1 represents that the baking taste is tender, and DS2 represents the baking taste for not tender not old, and DS3 represents that the baking taste is for old.When the operator selects semi-automatic mode baking, need the artificial main axis rotation speed of setting, switch to speed governing with the button S2 among Fig. 9, carry out the adjusting that increases progressively, successively decreases of main axis rotation speed again with button S4, S5 among Fig. 9, when setting spindle motor rotating speed is 5 rev/mins, diode DS3 lights, with indication; When setting spindle motor rotating speed was 10 rev/mins, diode DS2 lighted, with indication; When setting spindle motor rotating speed was 15 rev/mins, diode DS1 lighted, with indication.

Figure 14 is warning circuit figure.It is made up of single-chip microcomputer U1, resistance R 1 and R8, NPN type triode Q5, buzzer, button S6, capacitor C 1-C3 and a crystal oscillator Y1.11 pin of single-chip microcomputer connect buzzer through a triode amplifier.Whole baking end-of-job, 11 pin of single-chip microcomputer U1 can send a high level, triode Q5 conducting, buzzer Mic1 sounds the alarm, and reminds the operator to take out food; Chimes of doom sent once every 20 seconds, and each duration is 1 minute, 10 times altogether.

Figure 15 is fan electromotor drive circuit figure.It is made up of single-chip microcomputer U1, resistance R 1, R21-R25, photoelectrical coupler U4, NPN type triode Q4 and Q7, N raceway groove COMS pipe Q2, fan motor B2 (motor is a dc motor), hand switch SW2, button S6, capacitor C 1-C3 and a crystal oscillator Y1.The fan electromotor drive circuit of being made up of photoelectrical coupler, resistance, triode links to each other with 38 pin of single-chip microcomputer U1.When starting fan electromotor, 38 pin of single-chip microcomputer U1 output high level, fan motor work.Photoelectrical coupler U4 makes the variation of back one-level circuit not have influence on previous stage.Utilize triode Q7 and resistance R 25 to form holding circuit, when motor overload, loop current is excessive, power taking resistance R25 two ends pressure drop; if greater than 0.7V, triode Q7 conducting, the grounded-grid of COMS pipe Q2; Q2 ends, and fan electromotor B2 loop disconnects and quits work, and plays a protective role.The anode of diode D2 links to each other with the positive pole of spindle motor B2, and the negative electrode of diode D2 links to each other with the negative pole of spindle motor B2; Because the inductance among the fan motor B2 can store magnetic field energy; when COMS pipe Q2 turn-offs; the terminal voltage of its output will produce the very high spike of amplitude, and this spike can in time discharge through the loop of diode D2 and fan motor B2 formation, and Q2 is not breakdown for protection COMS pipe.Power supply also can directly insert from power supply by hand switch, manually starts/stop, and can control the fan air-supply duration artificially.Fan has been accelerated the circulation of air on charcoal surface, brings more oxygen, and charcoal is fully burnt.

Automatic temperature control circuit is made up of temperature sensor 401, fan 213, fan electromotor B2 and fan electromotor drive circuit.With reference to Figure 17, temperature sensor 401 passes to single-chip microcomputer U1 with the temperature value that collects to be differentiated, and whether starts fan electromotor B2 work, carries out exhausting; Charactron shows current temperature value.Such circulation that process is gone round and begun again can keep constant temperature in the stove automatically, and charcoal burning is reasonable, energy savings.

Figure 17 b represents single-chip microcomputer temperature differentiation process.Temperature sensor sends the temperature value T1 that collects to single-chip microcomputer, and single-chip microcomputer is differentiated temperature.At first subtract each other with the temperature value T1 and the lower temperature value TL that collect, the difference that obtains is deposited in the variables A, time-delay a period of time, again the temperature T 2 that collects is for the second time subtracted each other with lower temperature TL, the difference that obtains is deposited among the variable B, at last this difference of twice is subtracted each other the difference of trying to achieve again and deposit in the variable Y.

Temperature is the rising shape if variable Y, illustrates this moment greater than 0, and at this moment single-chip microcomputer is judged the temperature that collects again.If temperature T 2 less than lower temperature TL, illustrates that charcoal burning is insufficient, send a control signal immediately and start the fan rotation, accelerate furnace air and flow, make charcoal burning abundant, the charcoal fire burning is more prosperous in the stove; Greater than lower temperature TL, single-chip microcomputer also will remake once to be judged, if greater than higher temperature TH, illustrates that charcoal burning is very abundant as if temperature T 2, and the interior charcoal fire burning of stove is very prosperous, sends a control signal immediately and stops the fan rotation; If less than higher temperature TH, then still allow fan rotate.

Temperature is the decline shape if variable Y, illustrates this moment less than 0, and at this moment single-chip microcomputer is judged the temperature that collects again.If temperature T 2 greater than higher temperature TH, illustrates that charcoal burning is very abundant, send a control signal immediately and stop the fan rotation; If T2 is less than higher temperature TH, single-chip microcomputer also will remake once to be judged, if greater than lower temperature TL, fan still stops operating, if less than lower temperature TL, illustrate that charcoal burning is insufficient, send a control signal immediately, start fan and rotate, accelerate furnace air and flow, make charcoal burning abundant, the charcoal fire burning is more prosperous in the stove.

Above-mentioned single-chip microcomputer temperature is differentiated the method for body of heater internal temperature, can keep the inner constant temperature of body of heater automatically, simultaneously, stops frequent starting/stop fan electromotor B2, cuts down the consumption of energy.

Power circuit is made up of relay and DC power supply circuit, for hardware and spindle motor B1, the fan electromotor B2 of whole spit system provides direct current.

As shown in figure 18, the relay operating circuit is made up of single-chip microcomputer U1, resistance R 26, R27, relay K 1, triode Q6, power output interface JP1, diode D3, light emitting diode DS7, button S6, capacitor C 1-C3 and a crystal oscillator Y1.Forming the relay operating circuit by relay K 1, resistance, triode links to each other with 37 pin of single-chip microcomputer.If 37 pin of single-chip microcomputer U1 output high level, triode Q6 conducting, relay K 1 adhesive, diode DS7 lights to show simultaneously; The 24V direct current is communicated with direct current generator, and direct current generator B1, B2 are powered; 5V direct current and system connectivity are powered to system.If the 37 pin output low levels of single-chip microcomputer U1, triode Q6 ends, and relay K 1 disconnects, and diode DS7 extinguishes; 24V direct current and direct current generator disconnect, and direct current generator B1, B2 are stopped power supply; 5V direct current and system disconnect, and system is stopped power supply.The anode of diode D3, negative electrode and the two ends of relay K 1 link to each other, and diode D3 and relay K 1 are formed holding circuit provides relay K 1 discharge approach, and Q6 is not breakdown with the protection triode.Be provided with in addition and add battery interface JP2, it and power output interface JP1 parallel connection are not having to use storage battery power supply under the situation of civil power, 24V and 5V voltage are provided can for spindle motor, fan electromotor and single-chip microcomputer equally, guarantee that body of heater finishes various work.

As shown in figure 19, export 24V and 5V DC voltage by civil power 220V respectively by step-down, rectification, filtering, voltage stabilizing, wherein 5V voltage is directly to the single-chip microcomputer power supply, and 24V voltage is given direct current generator and fan electromotor again through relay switch.

The 2nd embodiment:

Second embodiment is on the basis of first embodiment, adopts the method that increases body of heater, bell, grate, charcoal box, and more food of baking of energy especially refers to two sheep of baking, has improved operating efficiency.

Figure 20 represent to extend frame for movement of spit.Exhaust smoke hole 2001 is twices of exhaust smoke hole 201 among Fig. 2, and the smog that produces in the baking process is discharged body of heater.The length of bell 2003 is twices of bell 203 among Fig. 2, can not only keep the heat in the stove, can also prevent that dust from entering body of heater.The length of main shaft 2004 is twices of main shaft 212 among Fig. 2, and the rotation of main shaft is heated evenly processed food.Grate 2002,2006 is identical with grate 202 among Fig. 2, and they are packed on the main shaft 2004 side by side, and it can not only be fixed food, can also increase the heating surface area of food.The length of body of heater 2005 is twices of body of heater 214 among Fig. 2, is the main device that holds food.The length of charcoal box 2007 is twices of charcoal box 217 among Fig. 2, and the ground floor of charcoal box holds charcoal, and the charcoal ash of after-flame can be fallen the second layer naturally by ash-falling hole 2204---connect grieshoch 2203, the oil trap 2201 of both sides is collected the oil that oozes out from food.

Figure 21 is the grate figure of lengthening spit.The length of main shaft 2004 is twices of main shaft 212 among Fig. 2, and grate 2002,2006 is identical with grate 202 among Fig. 2, and they are packed on the main shaft 2004 side by side.The transverse central axis of single net a501 in each grate links to each other with main shaft 2004, single net a501, single net b502 one on the other and placement direction identical, the centre is connected with snap close 504 with gear shift button 503.

Figure 22 is the charcoal box figure of lengthening spit.The length of charcoal box is the twice of charcoal box 217 among Fig. 2, and the ground floor of charcoal box holds charcoal, and the charcoal ash of after-flame can be fallen the second layer naturally by ash-falling hole 2204---connect grieshoch 2203, because the length of charcoal box increases.Except the oil trap 2201 of both sides, the also parallel oil trap 2201 that adds in the centre position of charcoal box 2007 is collected the oil that oozes out from food.The operator utilizes charcoal box handle 2202 that the charcoal box is taken out, and continues charcoal and charcoal box cleaning.

Figure 23 is the bell figure of lengthening spit.The length of bell 2003 is twices of bell 203 among Fig. 2, can not only keep the heat in the stove, can also prevent that dust from entering body of heater 2005, and the area of exhaust smoke hole 2001 also is the twice of exhaust smoke hole 201 among Fig. 2, and the smog that produces in the baking process is discharged body of heater 2005.The handle 2301 handled easily person opening and closing bells in bell 2003 outsides.

Figure 24 is the body of heater figure of lengthening spit.The length of body of heater 2005 is twices of body of heater 214 among Fig. 2, is the main device that holds food.Temperature sensor 2401 places body of heater 2005 inwalls.

Claims (10)

1. automation spit, comprise body of heater, be positioned at body of heater top bell, be used for holding the charcoal box and the spindle motor of charcoal, it is characterized in that also comprising: grate, main shaft, belt pulley, belt, spindle motor drive circuit, keyboard treatment circuit, power circuit;

Described spindle motor is connected with main shaft;

Described grate is positioned at described body of heater inside, is installed on the main shaft that is positioned at body of heater, and described grate is used for folding up baking food;

A side and main shaft that described belt pulley is positioned at main shaft are fixed together, and described spindle motor and belt pulley are positioned at the same side of main shaft, and described spindle motor is connected with main shaft in the body of heater by belt and belt pulley, drives main shaft and grate and rotates simultaneously;

The output of described spindle motor drive circuit is connected with the input of spindle motor, is used to drag spindle motor and rotates;

The single-chip microcomputer U1 of described keyboard treatment circuit links to each other with a plurality of buttons, is used to receive various program control instructions;

The output of described power circuit links to each other with the power input of described spindle motor, the output of described power circuit links to each other with the power input of described spindle motor drive circuit, and the output of described power circuit also links to each other with the power input of described keyboard treatment circuit.

2. automation spit according to claim 1 is characterized in that also comprising: temperature sensor, fan, fan electromotor and fan electromotor drive circuit are used for controlling automatically the temperature in the body of heater; Temperature sensor is positioned at inboard wall of furnace body, and the output of temperature sensor links to each other with single-chip microcomputer U1, and fan and fan electromotor are positioned at furnace body inside; The output of described fan electromotor drive circuit is connected with the input of fan electromotor, is used to drag fan electromotor and rotates.

3. automation spit according to claim 1 is characterized in that: described bell top has exhaust smoke hole, and the outside is equipped with handle; Described bell connects body of heater by the hinge that is positioned at the bell rear side, is axle with junction, hinge place, and bell can open arbitrarily angled with respect to body of heater; The locating button that is positioned at described bell rear side adopts bolt to be connected with body of heater or welding method is fixed, the standing portion of locating button tilt and the angle of horizontal plane greater than 90 °.

4. automation spit according to claim 1 is characterized in that: described grate is buckled by up and down two single nets, gear shift and snap close is formed, and described single net comprises a plurality of oil-guiding rails, and described gear shift has been smashed three and kept off tongues; Described single net outer contour shape is the hourglass shape, along the y direction left-right symmetry; Described oil-guiding rail is seen into along X direction, the likeness in form dovetail shaped; Described main shaft passes the transverse central axis of the net that places an order of described grate, and described two single Netcoms up and down cross the gear shift button, the snap close that are placed on four jiaos of places and link to each other.

5. automation spit according to claim 1 is characterized in that: the charcoal box that described charcoal box is a drawing out type, by the upper strata that is used to hold charcoal and the lower floor that is used to connect ash form; Described charcoal box both sides also are provided with oil trap, and the position, both sides of the edge of described oil trap and grate is corresponding; The front end of described charcoal box is provided with handle.

6. automation spit according to claim 1 is characterized in that: dismountable handle that shakes is installed on the described belt pulley; Furnace cradle is positioned at the body of heater below, but direction-caster links to each other with the furnace cradle bottom with the break-in castor.

7. automation spit according to claim 1 is characterized in that: described spindle motor drive circuit is made up of single-chip microcomputer U1, resistance R 1, R9-R14, photoelectrical coupler U3, NPN type triode Q3 and Q8, N raceway groove COMS pipe Q1, spindle motor B1, hand switch SW1, button S6, capacitor C 1-C4 and a crystal oscillator Y1; Connect to form spindle motor B1 holding circuit by triode Q8 and resistance R 14; The direct current motor drive circuit of being made up of photoelectrical coupler U3, resistance, triode links to each other with single-chip microcomputer U1; The anode of diode D1 links to each other with the positive pole of spindle motor B1, and the negative electrode of diode D1 links to each other with the negative pole of spindle motor B1, and diode D1 and spindle drive motor B1 constitute the protection loop of COMS pipe Q1.

8. automation spit according to claim 1 is characterized in that: it is made up of described keyboard control circuit single-chip microcomputer U1, button S1-S6, resistance R 1-R6, capacitor C 1-C3 and a crystal oscillator Y1; Button S1-S6 links to each other with single-chip microcomputer U1 respectively, and connects with pull-up resistor R2-R6 respectively and receive on the 5V voltage; Button S1 starts/stops key, button S2 is the multiplexing button of function conversion/confirm, be used for speed governing, regularly, the baking mode select three kinds between the difference in functionality switching and set in various parameters and to press this key after finishing and confirm, button S3 is a Pause key, button S4, S5 go up to select, select down key, be used to adjust speed governing, timing and functional parameter under the states such as baking mode is set, button S1, S2, S4 and S5 are multiplexing button.

9. automation spit according to claim 1 is characterized in that: described power circuit is made up of relay operating circuit and DC power supply circuit; Described relay operating circuit is made up of single-chip microcomputer U1, resistance R 26, R27, relay K 1, triode Q6, power output interface JP1, diode D3, light emitting diode DS7, button S6, capacitor C 1-C3 and a crystal oscillator Y1; Forming the relay operating circuit by relay K 1, resistance, triode links to each other with single-chip microcomputer U1; The output signal of single-chip microcomputer U1 is loaded into the coil two ends of relay K 1, the adhesive of control relay K1 and disconnection through triode Q6; The anode of diode D3, negative electrode and the two ends of relay K 1 link to each other, and diode D3 and relay K 1 are formed the holding circuit of triode Q6; Described relay operating circuit is provided with battery interface JP2 and power output interface JP1 parallel connection, and being used for is not having under the situation of civil power to provide 24V and 5V DC input voitage by storage battery power supply; Described DC power supply circuit provides 24V and two kinds of DC voltages of 5V.

10. automation spit according to claim 2 is characterized in that: described fan electromotor drive circuit is made up of single-chip microcomputer U1, resistance R 1 and R21-R25, photoelectrical coupler U4, NPN type triode Q4 and Q7, N raceway groove COMS pipe Q2, fan electromotor B2, hand switch SW2, button S6, capacitor C 1-C3 and a crystal oscillator Y1; Triode Q7 and resistance R 25 connect to form the fan electromotor holding circuit; The fan electromotor drive circuit of being made up of photoelectrical coupler U4, resistance, triode links to each other with single-chip microcomputer U1; The anode of diode D2 links to each other with the positive pole of spindle motor B2, and the negative electrode of diode D2 links to each other with the negative pole of spindle motor B2, and diode D2 and spindle drive motor B2 constitute the protection loop of COMS pipe Q2.

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