CN201145830Y - Processing box chip - Google Patents
Processing box chip Download PDFInfo
- Publication number
- CN201145830Y CN201145830Y CNU200820043716XU CN200820043716U CN201145830Y CN 201145830 Y CN201145830 Y CN 201145830Y CN U200820043716X U CNU200820043716X U CN U200820043716XU CN 200820043716 U CN200820043716 U CN 200820043716U CN 201145830 Y CN201145830 Y CN 201145830Y
- Authority
- CN
- China
- Prior art keywords
- triode
- circuit
- resistance
- microcontroller
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Power Sources (AREA)
Abstract
The utility model provides a treatment box chip, comprising a receiving circuit which receives electromagnetic waves sent by a printer, a parasitic power circuit which treats received electromagnetic wave signals and outputs the power voltage of the treatment box chip, a signal demodulating circuit which demodulates the received electromagnetic wave signals, a microcontroller which receives the output signals of the signal demodulating circuit and outputs modulating signals, a signal modulating circuit which modulates the output signals of the microcontroller, an exterior clock circuit which provides the working clock for the microcontroller, an auxiliary power circuit which provides electric energy for the output of the parasitic power circuit and an auxiliary power controlling unit, which controls the access or disconnection of the auxiliary power and ensures the complete disconnection and is connected between the microcontroller and the auxiliary voltage circuit. The treatment box chip of the utility model has the advantages of long service life, low manufacturing cost, etc.
Description
Technical field
The utility model relates to a kind of process box chip, especially a kind of process box chip that can carry out radio communication with laser printer.
Background technology
Along with the laser printer print speed improves constantly, the arithmetic speed of process box chip also needs corresponding raising, process box chip need come work with higher frequency of operation, for example read and write EEPROM, produce cyclic redundancy check (CRC) code at a high speed, process box chip need consume more electric energy in the time of the high speed processing frame format, the prior art scheme majority that process box chip and printer carry out radio communication adopts the parasite power circuit on the process box chip that microcontroller is powered, and the parasite power circuit is under the bigger situation of process box chip power consumption, it is under-supply then can power supply to take place, cause the microcontroller can't operate as normal, thereby process box chip is made mistakes to the metering or the Data Update of carbon dust in the handle box.Existing a kind of process box chip has increased auxiliary power circuit, and the access by the microprocessor controls auxiliary power circuit comes to provide electric energy to the parasite power circuit, guarantees that process box chip can steady operation when power consumption is bigger.
Fig. 1 is the electrical schematic diagram with process box chip of auxiliary power circuit, as shown in Figure 1, process box chip comprises receiving circuit, parasite power circuit, signal demodulating circuit, signal modulation circuit, outer clock circuit, auxiliary power circuit and microcontroller 100.
Receiving circuit comprises: inductance L, capacitor C 1, inductance L and capacitor C 1 are formed the shunt-resonant circuit and are received the electromagnetic wave signal that printer sends.
The parasite power circuit comprises: capacitor C 2, resistance R 1, diode D1, D2, D3, D4, wherein diode D1, D2, D3 and D4 form a bridge rectifier circuit.The c end ground connection of bridge rectifier circuit, the d end of resistance R 1 one termination bridge rectifier circuits, another termination capacitor C 2, capacitor C 2 other end ground connection.The electromagnetic wave signal that receiving circuit receives is isolated by resistance R 1 then through the bridge rectifier circuit rectification, and capacitor C 2 filtering energy storage obtain the stable power voltage vcc.
Signal demodulating circuit comprises: diode D2, D4, and resistance R 2, R3, R4, capacitor C 3, C4 and triode Q1, wherein diode D2, D4, resistance R 2, capacitor C 3 are formed the amplitude detection circuit.Capacitor C 3 and resistance R 2 backs in parallel one end are connected bridge rectifier circuit d end, other end ground connection, capacitor C 4 is connected between the base stage of the d end of bridge rectifier circuit and triode Q1, resistance R 3 is connected between triode Q1 base stage and the power Vcc, resistance R 4 is connected between triode Q1 collector and the power Vcc, and triode Q1 collector meets microcontroller pin IO1.Signal demodulating circuit receive from the electromagnetic wave signal of laser printer after the detection of amplitude detection circuit, the base stage that enters triode Q1 after capacitor C 4 couplings is amplified the back outputs to microcontroller 100 from collector pin IO1 by triode Q1 then.
Signal modulation circuit comprises: diode D6, D7, resistance R 9, R10, R11 and triode Q2.Diode D6 anode connects a end of bridge rectifier circuit, negative electrode connects the collector of triode Q2, diode D7 anode connects the b end of bridge rectifier circuit, negative electrode connects the collector of triode Q2, the emitter of resistance R 9 one termination triode Q2, other end ground connection, the base stage of resistance R 10 1 termination triode Q2, the pin IO2 of another termination microcontroller 100, the base stage of resistance R 11 1 termination triode Q2, other end ground connection.Wherein resistance R 9 is a modulation resistance, also is the emitter-base bandgap grading biasing resistor of triode Q2 simultaneously, and R10 is the current-limiting resistance of triode Q2.Modulation signal is from microcontroller 100 pin IO2 output, and the conducting by control triode Q2 or end the current switching of controlling R9 and change electric current by inductance L reaches the purpose that changes electromagnetic field at last, thereby carries out radio communication with printer.
Outer clock circuit comprises: diode D5, resistance R 7 and resistance R 8.Resistance R 7 one termination microcontrollers 100 clock pin CLKIN, another terminating diode D5 negative electrode, and diode D5 anode connects a end of bridge rectifier circuit, resistance R 8 one termination microcontrollers 100 clock pin CLKIN, other end ground connection.
Auxiliary power circuit comprises: positive-negative-positive triode Q3, resistance R 12 and accessory power supply.Wherein accessory power supply is a battery BAT, and battery BAT voltage VDD is greater than power source voltage Vcc, battery BAT minus earth, positive pole connects the emitter of triode Q3, resistance R 12 1 termination microcontrollers 100 pin IO3, another termination is as the base stage of the triode Q3 of control end, and the collector of triode Q3 connects power Vcc.
Process box chip also comprises microcontroller 100, its pin GND ground connection, and pin VCC connects power Vcc.The IO pin of more existing microcontroller inside all connects a protection diode to power Vcc, is shown in dotted line pin IO3 among Fig. 1 and connects diode D9 anode, and diode D9 negative electrode connects power Vcc.
When microcontroller pin IO3 output low level, triode Q3 conducting, battery BAT to capacitor C 2 chargings, provides electric energy to the parasite power circuit by triode Q3, guarantees the process box chip steady operation.In the process box chip practical work process, external timing signal may interrupt, microcontroller is in the deadlock state, cause the state of microcontroller pin IO3 to remain unchanged, because the built-in watchdog circuit of microcontroller, when external timing signal interrupts causing microcontroller after deadlock a period of time, the watchdog circuit microcontroller that automatically resets, this moment, all pins of microcontroller were high-impedance state, when microcontroller pin IO3 output high-impedance state, triode Q3 should end in theory, but because accessory power supply voltage VDD is greater than power source voltage Vcc, battery BAT is by triode Q3 emitter junction, resistance R 12, diode D9, make the triode Q3 can't normal turn-off, still be in the electric leakage state, can't disconnect battery BAT fully, the waste battery electric quantity causes accessory power supply can't guarantee that process box chip has one-period or above life-span of one-period.
In the time will cancelling accessory power supply; microcontroller pin IO3 is output as high-impedance state; this moment, triode Q3 should end in theory; accessory power supply VDD do not provide electric energy to power Vcc; but battery BAT, triode Q3 emitter junction, resistance R 12, protection diode D9 are communicated with at this moment; triode Q3 can't normal turn-off; battery BAT is in the electric leakage state; can't disconnect battery BAT fully; the waste battery electric quantity causes accessory power supply can't guarantee that process box chip has one-period or above life-span of one-period.
Existing a solution is to add triple gate control IC between resistance R 10 and pin IO3, uses other pin to open then and enables to bring in the break-make of control power Vcc, but use triple gate control IC to make that the process box chip cost is higher.Another solution is to use the microcontroller of inner unprotect diode, can prevent battery drain, but makes that like this compatibility was bad when process box chip was selected microcontroller.
Summary of the invention
One of the utility model purpose provides a kind of process box chip that prevents that accessory power supply from leaking electricity under situation about not inserting.
To achieve these goals, the utility model proposes a kind of new process box chip, comprising: receive the electromagnetic receiving circuit that printer sends; The electromagnetic wave signal that receives is handled and is exported the parasite power circuit of process box chip supply voltage; The electromagnetic wave signal that receives is carried out the signal demodulating circuit of demodulation; The output signal of receiving signal demodulation circuit is also exported the microcontroller of modulation signal; The signal modulation circuit that the output signal of microcontroller is modulated; The outer clock circuit of work clock is provided to microcontroller; The auxiliary power circuit of electric energy is provided to the output of parasite power circuit, the accessory power supply control module that the access of a pair of accessory power supply or disconnection are controlled and can be guaranteed to disconnect fully, the accessory power supply control module is connected between microcontroller and the auxiliary power circuit.
Compared with prior art, the process box chip that the utility model provides has increased the accessory power supply control module, the accessory power supply control module is controlled the access and the disconnection of accessory power supply according to the output of microcontroller, further, this accessory power supply control module can only need under parasite power circuit supply or the out-of-work situation of process box chip, the automatic cutout accessory power supply, prevent the accessory power supply electric leakage, prolong the serviceable life of accessory power supply, also can prolong the serviceable life of process box chip simultaneously.And accessory power supply control unit circuit cost simple in structure is lower.
Another object of the present invention provides the low and compatible good process box chip of a kind of cost; process box chip in the utility model not only can use the microcontroller of inner unprotect diode; also can use inside that the microcontroller of protection diode is arranged, the process box chip compatibility is good.And the accessory power supply control module is compared with triple gate, and circuit structure is simple, makes the cost of process box chip reduce.
Description of drawings
Fig. 1 is the electrical schematic diagram of existing process box chip;
Fig. 2 is the electrical schematic diagram of the utility model process box chip first embodiment;
Fig. 3 is the electrical schematic diagram of the utility model process box chip second embodiment;
Embodiment
Followingly process box chip is described in detail with reference to accompanying drawing.
Fig. 2 is the electrical schematic diagram of the utility model process box chip first embodiment.As shown in Figure 2, process box chip comprises receiving circuit, parasite power circuit, signal demodulating circuit, signal modulation circuit, outer clock circuit, auxiliary power circuit, accessory power supply control module and microcontroller 100, wherein receiving circuit, parasite power circuit, signal demodulating circuit, signal modulation circuit, outer clock circuit, auxiliary power circuit are identical with existing process box chip with microcontroller, do not repeat them here.Compare with existing process box chip, the process box chip of present embodiment has increased by an accessory power supply control module that is connected between microcontroller and the auxiliary power circuit, the accessory power supply control module comprises triode Q14, resistance R 13, R14, R15, the base stage of resistance R 14 1 termination triode Q3, the collector of another termination triode Q14, the base stage of resistance R 15 1 termination triode Q14, an I/O pin of another termination microcontroller, present embodiment is pin IO3, the base stage of resistance R 13 1 termination triode Q14, other end ground connection, triode Q14 grounded emitter.Resistance R 13 is the base stage pull down resistor of triode Q14, and its effect is when process box chip starts, and guarantees that triode Q14 is in cut-off state, thereby guarantees that triode Q3 ends, and accessory power supply does not insert process box chip.
When needs insert accessory power supply, microcontroller 100 pin IO3 are output as high level, triode Q14 conducting, triode Q14 current collection is low level very, triode Q3 conducting, thereby battery BAT is by 18 pairs of capacitor C of resistance R 2 charging, guarantee process box chip in big current work process not can because of supply of electrical energy causes microcontroller on not can't operate as normal.
In the process box chip practical work process, external timing signal may interrupt, cause microcontroller to be in the deadlock state, and microcontroller pin IO3 state remains unchanged, utilize the watchdog circuit of microcontroller that independently sheet internal oscillator drive principle is arranged, house dog resets in the program normal course of operation, and when external clock stops, microcontroller crashes, but house dog still works on, this moment, microcontroller was because of the deadlock watchdog circuit that can't normally reset, cause the overtime microcontroller that resets of watchdog circuit, this moment, all pins of microcontroller were high-impedance state, microcontroller pin IO3 is under the situation of high-impedance state, and triode Q14 ends under the effect of resistance R 13, triode Q3 also is in cut-off state, and accessory power supply BAT can't constitute the closed-loop path, thereby can guarantee process box chip consuming cells BAT electric weight not when not working, prolong the serviceable life of battery BAT.
In the time will cancelling accessory power supply, the pin IO3 of microcontroller is converted to high-impedance state or output low level, and this moment, triode Q14 ended, and triode Q3 also ends, and battery BAT stops capacitor C 2 chargings.Because triode Q3, Q14 are in cut-off state, battery BAT can't form the closed-loop path and discharge.When process box chip quit work, microcontroller pin IO3 was in high-impedance state, and triode Q3, triode Q14 all are in cut-off state, and battery BAT can't form the closed-loop path and discharge.
Compare with existing process box chip, the process box chip of present embodiment can disconnect accessory power supply fully under the situation that accessory power supply does not insert, and prevents the accessory power supply electric leakage, prolongs the serviceable life of process box chip.
Certainly, process box chip of the present utility model can also have other embodiment.Referring to Fig. 3, Fig. 3 is the electrical schematic diagram of the utility model process box chip second embodiment.Compare with previous embodiment, the accessory power supply control module of second embodiment comprises triode Q24, Q25, resistance R 23, R24, R25, R26, the base stage of resistance R 25 1 termination triode Q3 wherein, the collector of another termination triode Q24, the grounded emitter of triode Q24, the base stage of resistance R 24 1 termination triode Q24, another termination power source voltage Vcc, the base stage of triode Q25 collector connecting transistor Q24, the grounded emitter of triode Q25, resistance R 26 1 termination triode Q25 base stages, another termination microcontroller pin IO3, resistance R 23 1 termination microcontroller pin IO3, another termination power source voltage Vcc.
When needs insert accessory power supply, microcontroller pin IO3 output low level, this moment, triode Q25 ended, the base stage of triode Q24 is high level under the effect of resistance R 24, triode Q24 conducting, triode Q24 collector output low level, thereby triode Q3 conducting, battery BAT is by triode Q3,2 chargings of 18 pairs of capacitor C of resistance R, for microcontroller provides operating voltage, guarantee process box chip in big current work process not can because of supply of electrical energy causes microcontroller on not can't operate as normal.
In the process box chip practical work process, external timing signal may interrupt, cause microcontroller to be in the deadlock state, and microcontroller pin IO3 state remains unchanged, utilize the watchdog circuit of microcontroller that independently sheet internal oscillator drive principle is arranged, house dog resets in the program normal course of operation, and when external clock stops, microcontroller crashes, but house dog still works on, this moment, microcontroller was because of the deadlock watchdog circuit that can't normally reset, cause the overtime microcontroller that resets of watchdog circuit, this moment, all pins of microcontroller were high-impedance state, were under the situation of high-impedance state at microcontroller pin IO3, triode Q25 conducting owing to drawing effect on the resistance R 23, triode Q25 current collection is low level very, thereby triode Q24 and triode Q3 are in cut-off state, and accessory power supply can't constitute the closed-loop path, thereby can guarantee process box chip consuming cells BAT electric weight not when not working, prolong the serviceable life of battery BAT.
In the time will cancelling accessory power supply, the pin IO3 of microcontroller is converted to high level, triode Q25 conducting this moment, triode Q25 current collection is low level very, and triode Q24 ends, thereby triode Q3 ends, disconnect the power supply of battery BAT to microcontroller, because triode Q3, Q24 all is in cut-off state, battery BAT can't form the closed-loop path, can prevent battery drain.When process box chip quit work, microcontroller IO3 pin was in high-impedance state, triode Q25 conducting, and triode Q24, triode Q3 end, and battery BAT can not leak electricity yet.
Compare with existing process box chip, process box chip of the present utility model all can disconnect auxiliary power circuit fully under separately by parasite power circuit supply and the out-of-work situation of process box chip, prevent battery BAT electric leakage, thereby prolonged the serviceable life of process box chip.
Process box chip among all embodiment of the utility model not only can use the microcontroller of inner unprotect diode; also can use inside that the microcontroller of protection diode is arranged; process box chip is compatible good owing to the accessory power supply control module is compared with triple gate; circuit structure is simple, so the cost of process box chip is low.
Accessory power supply in the utility model also can use super capacitor to substitute, the triode that uses in the process box chip all can use corresponding field effect transistor (FET) to substitute, the utility model is not limited to the foregoing description, under the situation that does not break away from main scope of the utility model and design, can there be multiple other distortion, change and replacement to be included within the described scope of claims.
Claims (7)
1, process box chip comprises
Receive the electromagnetic receiving circuit that printer sends;
The electromagnetic wave signal that receives is handled and is exported the parasite power circuit of process box chip supply voltage;
The electromagnetic wave signal that receives is carried out the signal demodulating circuit of demodulation;
The output signal of receiving signal demodulation circuit is also exported the microcontroller of modulation signal;
The signal modulation circuit that the output signal of described microcontroller is modulated;
The outer clock circuit of work clock is provided to described microcontroller;
The auxiliary power circuit of electric energy is provided to the output of described parasite power circuit;
It is characterized in that:
The accessory power supply control module that the access of a pair of accessory power supply or disconnection are controlled and can be guaranteed to disconnect fully, described accessory power supply control module is connected between described microcontroller and the described auxiliary power circuit.
2, process box chip as claimed in claim 1 is characterized in that:
Described accessory power supply control module comprises triode Q14, resistance R 13, R14, R15, the described auxiliary power circuit of resistance R 14 1 terminations wherein, the collector of another termination triode Q14, the base stage of resistance R 15 1 termination triode Q14, an I/O pin of the described microcontroller of another termination, the base stage of resistance R 13 1 termination triode Q14, other end ground connection, triode Q14 grounded emitter.
3, process box chip as claimed in claim 2 is characterized in that:
Described auxiliary power circuit comprises triode Q3, resistance R 18 and accessory power supply, described accessory power supply one end ground connection, the emitter of another termination triode Q3, resistance R 18 1 termination power voltages, the collector of another termination triode Q3;
The base stage of the resistance R 14 1 termination triode Q3 of described accessory power supply control module, the collector of another termination triode Q14.
4, process box chip as claimed in claim 1 is characterized in that:
Described accessory power supply control module comprises triode Q24, Q25 and resistance R 23, R24, R25, R26, resistance R 25 1 termination auxiliary power circuits wherein, the collector of another termination triode Q24, the grounded emitter of triode Q24, the base stage of resistance R 24 1 termination triode Q24, another termination supply voltage, the base stage of triode Q25 collector connecting transistor Q24, triode Q25 grounded emitter, resistance R 26 1 termination triode Q25 base stages, an I/O pin of the described microcontroller of another termination, an I/O pin of the described microcontroller of resistance R 23 1 terminations, another termination supply voltage.
5, process box chip as claimed in claim 4 is characterized in that:
Described auxiliary power circuit comprises triode Q3, resistance R 18 and accessory power supply, described accessory power supply one end ground connection, the emitter of another termination triode Q3, resistance R 18 1 termination power voltages, the collector of another termination triode Q3;
The base stage of the resistance R 25 1 termination triode Q3 of described accessory power supply control module, the collector of another termination triode Q24.
6, as claim 3 or 5 described process box chips, it is characterized in that:
Described accessory power supply is a battery, and described battery passes through triode Q3 to described parasite power circuit supply.
7, as claim 3 or 5 described process box chips, it is characterized in that:
Described accessory power supply is an electric capacity, and described electric capacity passes through triode Q3 to described parasite power circuit supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820043716XU CN201145830Y (en) | 2008-01-29 | 2008-01-29 | Processing box chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820043716XU CN201145830Y (en) | 2008-01-29 | 2008-01-29 | Processing box chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145830Y true CN201145830Y (en) | 2008-11-05 |
Family
ID=40082712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820043716XU Expired - Fee Related CN201145830Y (en) | 2008-01-29 | 2008-01-29 | Processing box chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145830Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009127156A1 (en) * | 2008-04-17 | 2009-10-22 | 珠海天威技术开发有限公司 | Chip and consumable container |
| CN106648768A (en) * | 2016-12-09 | 2017-05-10 | 福建三元达网络技术有限公司 | Method and system for upgrading equipment |
| GB2615168A (en) * | 2021-12-31 | 2023-08-02 | Zhuhai Pantum Electronics Co Ltd | Consumables chip, consumable, image-forming apparatus, communication method, and detection method |
-
2008
- 2008-01-29 CN CNU200820043716XU patent/CN201145830Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009127156A1 (en) * | 2008-04-17 | 2009-10-22 | 珠海天威技术开发有限公司 | Chip and consumable container |
| CN106648768A (en) * | 2016-12-09 | 2017-05-10 | 福建三元达网络技术有限公司 | Method and system for upgrading equipment |
| GB2615168A (en) * | 2021-12-31 | 2023-08-02 | Zhuhai Pantum Electronics Co Ltd | Consumables chip, consumable, image-forming apparatus, communication method, and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203933124U (en) | A kind of single interface portable power source, bluetooth keyboard and protective sleeve | |
| CN101827480B (en) | LED drive control circuit | |
| CN102692948B (en) | The real-time clock low power consumpting controling circuit that SOC (system on a chip) realizes | |
| CN101835312A (en) | LED drive control circuit | |
| CN201145830Y (en) | Processing box chip | |
| CN217335186U (en) | Dual-power automatic switching circuit and dual-power supply circuit | |
| CN105703021A (en) | Battery management system with low standby power consumption and battery management system awaking method | |
| CN201726170U (en) | Power supply with wakeup function | |
| WO2021258366A1 (en) | Control circuit, battery management system and electrochemical device | |
| CN101893925A (en) | Start circuit | |
| CN210780130U (en) | Power-off control circuit | |
| CN201867606U (en) | Switch circuit | |
| CN205212497U (en) | Power supply system is prevented in low -power consumption shutdown circuit and low -power consumption | |
| CN202661919U (en) | Real-time clock low power consumption control circuit realized by system on chip | |
| CN111262328A (en) | Vehicle-mounted terminal standby battery management system | |
| CN212061147U (en) | Industrial personal computer production data protection system based on super capacitor | |
| CN111525542B (en) | Power supply method for safely storing data of intelligent electric energy meter | |
| CN210225033U (en) | Switching circuit for charging circuit | |
| CN209963949U (en) | Soft start circuit of current type pulse width modulator chip | |
| CN201733130U (en) | Power supply management module circuit | |
| CN207588555U (en) | A kind of electric power system of power concentrator | |
| CN105629830A (en) | Power management method for interconnected automobile electronic device | |
| CN205509846U (en) | Ammeter power failure intelligence circuit of checking meter | |
| CN207637156U (en) | A kind of identity card reading machine of low power consumption | |
| CN213585190U (en) | Power control circuit with standby low power consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 |