CN1297300A - Electronic encoder - Google Patents

Electronic encoder Download PDF

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Publication number
CN1297300A
CN1297300A CN 99123763 CN99123763A CN1297300A CN 1297300 A CN1297300 A CN 1297300A CN 99123763 CN99123763 CN 99123763 CN 99123763 A CN99123763 A CN 99123763A CN 1297300 A CN1297300 A CN 1297300A
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China
Prior art keywords
resistance
base stage
triode
circuit
mouth
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Granted
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CN 99123763
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Chinese (zh)
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CN1125551C (en
Inventor
刘卫华
王印斌
李向阳
王建华
王爱中
王喜芝
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Gulf Security Technology Co., Ltd.
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HAIWAN SAFETY TECHNOLOGY Co Ltd
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Priority to CN 99123763 priority Critical patent/CN1125551C/en
Publication of CN1297300A publication Critical patent/CN1297300A/en
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Publication of CN1125551C publication Critical patent/CN1125551C/en
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Abstract

An electronic encoder is composed of automatic on/off circuit, code transmitter, code receiver, step-up circuit, electric level monitor, keyboard and display circuit. It has functions of non-polar bibus system, low-power sleep and automatic turn off, selftest and battery undervoltage indication.

Description

Lineside encoding unit
The present invention relates to a kind of a kind of Lineside encoding unit to fire detector and module coding.
For position and its place of surveying of differentiating fire detector, carry out the interior coding of certain limit all will in the middle of the practical application detector (or module), this coding generally all adopts the toggle switch or the coding contact pin place in circuit of a location number, whether the short circuit of open close, the coding contact pin by toggle switch and goes identification to finish by related circuit.So, not only operate cumbersomely, be difficult for to realize the production automation, and circuit is also very complicated.Dial-up beginning and coding contact pin volume are all bigger, the fire detector comparison heaviness that also just seems.The most important thing is, must in detector, buckle and to reserve notch, thereby destroyed the overall tightness of its shell, be difficult for to realize moistureproof, dustproof, waterproof, insect protected, had a strong impact on the reliability and the life-span of detector.Simultaneously, the reservation notch is returned mold design and is brought certain difficulty.
Purpose of the present invention provides a kind of device that just can encode or rewrite detector without toggle switch and coding contact pin.It is written to the Lineside encoding unit in the detector internal data memory by finishing information exchange with the inner single-chip microcomputer of detector with shared two buses of controller with address code, sensitivity, batch number information.
The object of the present invention is achieved like this: Lineside encoding unit has adopted the automatic opening/closing machine circuit, and the input signal by power supply links to each other with switch ON/OFF, is attempted by on the button CF, by CF and electrochemical capacitor C 11, triode T 2Parallel connection, T 2Base stage, collector electrode respectively with triode T 1Collector electrode, emitter link to each other and constitute compound NPN pipe, resistance R 1A termination T 1Collector electrode, the other end and T 1Base stage, resistance R 2Link to each other, by R 1, R 2Dividing potential drop the base current of multiple tube, resistance R are provided 2The other end and triode T 3Emitter connect, base stage is passed through resistance R 3With single-chip microcomputer U 1I/O mouth RAO connect U 1The RA1 mouth pass through resistance R 6Be connected to triode T 6Base stage, grounded emitter, collector electrode passes through resistance R 5Be connected in by triode T 4, T 5On the base stage of the PNP multiple tube of forming, resistance R 4Be connected to the input of control MAX629 Switching Power Supply between the base stage of multiple tube and the collector electrode; The output signal V of Switching Power Supply 18, be added in positive-negative-positive triode T 8Emitter on, by the resistance R that connects between emitter and the base stage 7With the resistance R that is connected on the base stage 8The dividing potential drop of the two, R 8The other end be connected to triode T 9Collector electrode on, base stage is passed through resistance R 9Single-chip microcomputer U 1I/O mouth RCO be connected in mutually obtain on the bus high level circuit with by triode T 10, T 11The positive-negative-positive compound transistor of forming, its base stage is passed through resistance R 10Be connected to single-chip microcomputer U 1I/O mouth RC1 on obtain the signaling circuit that low-level circuit is formed; Regain decoding circuit by single-chip microcomputer U 1RC3 mouth output, pass through resistance R 11With diode D 1Be applied on the bus B US1, at D 1, R 11Between connect diode D 2, D 3And resistance R 12And ground connection, return the reading of sign indicating number by U 1I/O mouth RC2 be connected to diode D 3And resistance R 12Between.
The present invention has following characteristics:
1, nonpolarity two bus systems
Shared one group of nonpolarity two bus of encoder and controller make the simplification of getting in touch between encoder and detector or the module, and since the two between not altogether, also reduced the interference signal that comes from either party, enlarged the application places of encoder.
2, can finish reading and writing of information such as address code, batch number, sensitivity.
Coding can be rewritten arbitrarily, but the production title of an emperor's reign, batch number, the style number of product are one-time writes, can not change.In order to improve the adaptability of detector and maintainable easily, make it be applicable to different places, its sensitivity is rewritable, but has added authority, just have only engineers and technicians can rewrite sensitivity in view of the needs of operation and maintenance.
3, the low-power consumption sleep and the function of shutting down automatically
Native system is not at open state but when having operation, U 1Be in low-power sleep state with saves energy.Automatically the shutdown function is for fear of forgetting that owing to the artificial origin shutdown causes the lot of energy loss.
But the performance of 4 test probes or module
The native system special setting self-diagnostic function, by self diagnosis, can test the standing state of detector or module.Improved the reliability that product uses on the engineering.
5, the under-voltage deixis of battery
When cell voltage is lower than a certain limit, system will provide under-voltage information.This function is used for reminding engineers and technicians in time to change battery, avoids owing to the power supply reason produces system's instability, and influences the reliability that product uses on the engineering.
6, show succinctly intuitively, low in energy consumption
Native system adopts four segment code type liquid crystal displays, and simple, intuitive is low in energy consumption.
7, external form is small and exquisite attractive in appearance, easy to carry
Native system is similar to TV remote controller, and is connected with metallic bond, can hang between waist or wrist, is convenient to protect and carry.
The present invention embodiment in conjunction with the accompanying drawings further describes:
Fig. 1 is the circuit theory diagrams of native system.
Fig. 2 is the signaling circuit diagram of another embodiment.
Fig. 3 is the withdrawal decoding circuit figure of another embodiment.
Fig. 4 is the automatic shutdown circuitry figure of another embodiment.
Accompanying drawing 1 is the Lineside encoding unit circuit theory diagrams, and it is made up of automatic opening/closing machine circuit, signaling circuit, receipts decoding circuit, booster circuit, electronic monitoring circuit and keyboard and display circuit.Lineside encoding unit has adopted the automatic opening/closing machine circuit, and the input signal of power supply links to each other with switch ON/OFF, and is connected by it and connects on the key CF, makes CF and electrochemical capacitor C 11, triode T 2Parallel connection realizes automatic postboost hardware power up function, by T 2Base stage, collector electrode respectively with triode T 1Collector electrode, emitter link to each other and constitute compound NPN pipe, resistance R 1One be terminated at T 1Collector electrode, the other end and T 1Base stage, resistance R 2Dividing potential drop the base current of multiple tube, R are provided 2The other end and T 3Emitter connect T 3Base stage pass through resistance R 3With single-chip microcomputer U 1I/O mouth RAO link to each other, effect provides the machine open/close signal.Single-chip microcomputer U 1The RA1 mouth pass through resistance R 6Be connected on T 6Base stage on, T 6Grounded emitter, collector electrode passes through resistance R again 5Be connected to by T 4, T 5On the base stage of the PNP multiple tube of forming, (composition of multiple tube and T 1, T 2Mode identical) resistance R 4Be connected between the base stage and collector electrode of multiple tube, it is the input of the Switching Power Supply of core that this part is used to control with MAX629, and the Switching Power Supply periphery is by C 7, I 1, D 4, C 8, C 9, R 14, R 13And C 10The typical circuit of forming.The signaling circuit is divided into the circuit that produces high level and produces low level circuit two parts: the output signal V of Switching Power Supply 18, be added in positive-negative-positive triode T 8Emitter on, connect T 8Emitter and the resistance R between the base stage 7With the resistance R that is connected on the base stage 8The dividing potential drop of the two provides T 8Conducting whether level, R 8The other end be connected to T 9Collector electrode on, its base stage is passed through resistance R again 9With single-chip microcomputer U 1I/O mouth RCO link to each other, the effect of above device is to obtain high level on bus; Low level is by T 10, T 11Form the compound transistor of a positive-negative-positive, its base current is by being connected U 1I/O mouth RC1 on resistance R 10Provide, regain in the decoding circuit, return the sign indicating number level by U 1The RC3 mouth provide, pass through resistance R 11With diode D 1Be applied on the bus B US1, play the diode D of step-down effect 2, D 3, at D 1, R 11Between draw, pass through resistance R again 12Ground connection is returned sign indicating number and is read by U 1I/O mouth RC2 finish, it is connected D 3And R 12Between.Native system is by a joint 9V powered battery, select the core of the lower single-chip microcomputer PIC16C73 of power consumption (production of MICROCHIP company) for use as system, and select for use little power consumption MAX629 and HT1050 as voltage conversion device, the display part adopts ICM7211 to drive four segment code type LCDs of EDS-805-as chip for driving, and purpose all is the loss for limit electrical energy.After mains switch ON/OFF opens at C 11On will produce charging current, this electric current directly is added in U 6(HT1050) on the input, and the process conversion obtains 5V (VCC) voltage, single-chip microcomputer U on output 1Electric after, first initialization is put height with the RAO mouth then, passes through R 3Make T 3Saturation conduction makes electric current can flow through series resistance R 1, R 2, by T 1, T 2The base stage of the multiple tube that is barricaded as is connected R 1, R 2Between, and because the dividing potential drop effect of the two makes its conducting, supply voltage just can pass through C 11And pass through T 2C, E pin be added in U 6On, make power unit stable from keeping, this has just finished the function that powers on of starting shooting.U 6Input also be connected on simultaneously voltage tester chip H 1(HT7070) input, H when the IN terminal voltage is higher than 7V 1The E pin be output as low level, when input during, be output as supply voltage, through series resistance R less than 7V 19, R 20Dividing potential drop, by U 1The RA2 interface can read the voltage status value, show then.ICM7211 and sheet machine direct interface on the half, its 27-30 pin is a data input pin, the 31-34 section of being gating road, when data need show, U 1The corresponding section of elder generation's gating gating road is delivered on the data input pin data by U again 3Show.The adaper system puts other I/O mouths low, enters sleep state.If keyboard has action, U 1The RB mouth will produce interrupt signal, and key assignments is read in the internal RAM.Judge key assignments, if the programming key, the decimal number that needs programming is converted into five trits, and (two burst pulses are represented " 0 ", one wide one narrow expression " 1 ", two broad pulses are represented " 2 "), wherein the width of broad pulse is 213.5US, the width of burst pulse is 30.5US.Pulse duration is by U 1Timer internal obtain.Single-chip microcomputer U 1(PIC16C73A) RCO mouth control R 9, T 9, R 8, T 8, R 7, constituted the circuit that produces high level; RC1 mouth control R 10, T 11, T 10, constituted the low level circuit of generation.During signaling, earlier RA1 is put high by control circuit R 6, T 6, R 5, R 4And by T 1, T 2The multiple tube of forming is started working booster circuit, and the time-delay certain hour is so that C 7, C 10Charging by the high and low variation of RC0, RC1 mouth, is passed through resistance R respectively then 9, T 11Saturated with end, again by two PNP pipe T 7, T 10Switch, on bus B US1, obtain required sign indicating number type.After according to communications protocol the sign indicating number type being sent entirely, forward yard state that reads back at once to.Read back decoding circuit by U 1RC2, RC3 mouth, D 1, D 2, D 3, R 11, R 12Form, put low RC0, RC1, RA1, RC3 is put height, make and keep 5V voltage, U on the BUS1 1Reading does not have back sign indicating number and obtains pwm value in the state-judgement of RC2 mouth, if pulsewidth is normal, this address just is written in the detector.Adjust the state of each I/O mouth, enter low-power sleep state.During sleep, counter is still worked, when the count value of counter exceeds preset value, and U 1The oneself wakes up, carries out repeatedly the RAO mouth is put low instruction, at this moment R 3Can not give T 3Base stage base current is provided and multiple tube is ended, system will quit work owing to power down.
Accompanying drawing 2 is signaling circuit diagrams of another way, and VDD is the bus required voltage, and VCC can make triode T 2, T 3The voltage of saturation conduction, this signaling circuit also comprise the circuit that produces high level and produce low level circuit two parts: R 6CONTROL1 end be connected on the I/O mouth or be connected on other drive circuit, the other end is connected on the A pin of optocoupler 03,03 K pin ground connection, the C pin meets VCC, the E pin meets triode T 2Base stage, R 3Be connected to T 2Base stage and emitter between, T 2Collector electrode pass through resistance R 2Be connected to PNP triode T 1Base stage on, R 1One be terminated at T 1The base stage other end and T 1Emitter receive on the VDD T after connecting 1Collector electrode be connected on the BUS1.The connection of above circuit has realized obtaining the purpose of high level.R 7CONTROL2 end also be connected on the I/O mouth or be connected on other drive circuit, the other end is connected on the A pin of optocoupler 04,04 K pin ground connection, the C pin meets VCC, the E pin passes through resistance R 5Connect little molehill NPN triode T 3Base stage on, R 4One be terminated at T 3Base stage, the other end and T 3Emitter receive BUS2 after connecting and go up (promptly " "), T 3The also same T of collector electrode 1Collector electrode equally be connected on the BUS1.This part circuit can obtain low level on bus.03,04 effect is to realize the photoelectricity isolation, also can not isolate as required, and available other control circuit is realized.R 1, R 3, R 4Effect be control T 1, T 2, T 3Base current, can remove need not.
Accompanying drawing 3 is withdrawal decoding circuit figure of another program, and VDD is added in R 8An end, voltage-stabiliser tube Z 1With capacitor C 5Parallel connection again with R 8Be composed in series a voltage stabilizing circuit, the C end 01 obtains a required time sign indicating number voltage.01 A pin passes through resistance R 9Be connected on the VCC, the K pin is connected on triode T 1Collector electrode on, T 1Grounded emitter, base stage is passed through R 10Be connected on the I/O mouth (or other control circuits); 01 E wore 02 A pin, the BUS1 of K human hair combing waste decoding circuit links to each other, 02 E pin ground connection, and the C pin passes through R 11Be connected on I/O mouth (or other control circuits).01,02 can be replaced by triode on two herein.
Accompanying drawing 4 is the automatic shutdown circuitry of another program, and the operation principle of this circuit also is to have utilized the charge-discharge principle of electric capacity to realize the automatic on/off function.IN termination power switch, resistance R 1Be connected in parallel on triode T 1Emitter and base stage between, T 1Collector electrode connect the input of voltage-stabiliser tube, base stage is passed through resistance R again 2Be connected to triode T 2Collector electrode on, capacitor C 1Two ends be connected on T respectively 2Collector and emitter on, grounded emitter, T 2Base stage pass through resistance R 3Receive on the I/O mouth of single-chip microcomputer.When the IN end added instantaneous voltage, electric current passed through R 1, R 2Give C 4Charging, in charging process, T 1Base stage because R 1, R 2The dividing potential drop effect and dragged down T 1Saturation conduction, VCC offer system power supply after by voltage stabilizing, and put high FEED this moment immediately makes T 2Saturation conduction is kept T 1The low level of base stage, C 4Charging finishes, and system also remains on the self-powered state.When FEED is put when low T 2Be cut off and to C 4Charging finishes T in this process up to charging 1Conducting system always still works, because C 4Do not recharge R 1, R 2Go up and flow through T with regard to no current 1Base stage put height, T 1Be cut off, system quits work owing to powering.T 1Can replace T by multiple tube 2Can replace T by multiple tube 2Also can replace by optocoupler.

Claims (4)

1, Lineside encoding unit is characterized in that, it has adopted the automatic opening/closing machine circuit, and the input signal by power supply links to each other with switch ON/OFF, is attempted by on the button CF, by CF and electrochemical capacitor C 11, triode T 2Parallel connection, T 2Base stage, collector electrode respectively with triode T 1Collector electrode, emitter link to each other and constitute compound NPN pipe, resistance R 1A termination T 1Collector electrode, the other end and T 1Base stage, resistance R 2Link to each other, by R 1, R 2Dividing potential drop the base current of multiple tube, resistance R are provided 2The other end and triode T 3Emitter connect, base stage is passed through resistance R 3With single-chip microcomputer U 1I/O mouth RAO connect U 1The RA1 mouth pass through resistance R 6Be connected to triode T 6Base stage, grounded emitter, collector electrode passes through resistance R 5Be connected in by triode T 4, T 5On the base stage of the PNP multiple tube of forming, resistance R 4Be connected to the input of control MAX629 Switching Power Supply between the base stage of multiple tube and the collector electrode; The output signal V of Switching Power Supply 18, be added in positive-negative-positive triode T 8Emitter on, by the resistance R that connects between emitter and the base stage 7With the resistance R that is connected on the base stage 8The dividing potential drop of the two, R 8The other end be connected to triode T 9Collector electrode on, base stage is passed through resistance R 9Single-chip microcomputer U 1I/O mouth RCO be connected in mutually obtain on the bus high level circuit with by triode T 10, T 11The positive-negative-positive compound transistor of forming, its base stage is passed through resistance R 10Be connected to single-chip microcomputer U 1I/O mouth RC1 on obtain the signaling circuit that low-level circuit is formed; Regain decoding circuit by single-chip microcomputer U 1RC3 mouth output, pass through resistance R 11With diode D 1Be applied on the bus B US1, at D 1, R 11Between connect diode D 2, D 3And resistance R 12And ground connection, return the reading of sign indicating number by U 1I/O mouth RC2 be connected to diode D 3And resistance R 12Between.
2, by the described Lineside encoding unit of claim 1, it is characterized in that the signaling circuit also can be designed to another circuit mode: by resistance R 6CONTROL1 end be connected on the I/O mouth or be connected on other drive circuit, the other end is connected on the A pin of optocoupler 03,03 K pin ground connection, the C pin meets VCC, the E pin meets triode T 2Base stage, resistance R 3Be connected to T 2Base stage and emitter between, T 2Collector electrode pass through resistance R 2Be connected to PNP triode T 1Base stage on, resistance R 1One be terminated at T 1Base stage and emitter and receive on the VDD T 1Collector electrode be connected on and obtain high level on the BUS1, by resistance R 7CONTROL2 end also be connected on the I/O mouth or be connected on other drive circuit, the other end is connected on the A pin of optocoupler 04, K pin ground connection, the C pin meets VCC, the E pin passes through resistance R 5Be connected in NPN triode T 3Base stage, R 4One be terminated at T 3Base stage, the other end and T 3Emitter receive BUS2 after connecting and go up ground connection, T 3Collector electrode join and obtain low level on the BUS1.
3, by the described Lineside encoding unit of claim 1, it is characterized in that, regain decoding circuit and can be designed to another circuit mode; VDD is added in R 8An end, by voltage-stabiliser tube Z 1With capacitor C 5Parallel connection and R 8Be composed in series a voltage stabilizing circuit, the C end 01 obtains a required time sign indicating number voltage, and 01 A pin passes through resistance R 9Be connected on the VCC, the K pin is connected on triode T 1Collector electrode, grounded emitter, base stage is passed through resistance R 10Connect on I/O mouth or other control circuits, 01 E wore 02 A pin, K pin and linked to each other with the BUS1 of signaling circuit, 02 E pin ground connection, and the C pin passes through R 11Connect I/O mouth or other control circuits.
By claim 1 or 3 described Lineside encoding units, it is characterized in that 4, described withdrawal decoding circuit also can be replaced by another circuit; By IN termination power switch, resistance R 1Be connected in parallel on triode T 1Emitter and base stage between, T 1Collector electrode connect the input of voltage-stabiliser tube, base stage is passed through resistance R again 2Be connected to triode T 2Collector electrode on, grounded emitter, T 2Base stage pass through resistance R 3Receive on the I/O mouth of single-chip microcomputer.
CN 99123763 1999-11-22 1999-11-22 Electronic encoder Expired - Fee Related CN1125551C (en)

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Application Number Priority Date Filing Date Title
CN 99123763 CN1125551C (en) 1999-11-22 1999-11-22 Electronic encoder

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Application Number Priority Date Filing Date Title
CN 99123763 CN1125551C (en) 1999-11-22 1999-11-22 Electronic encoder

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CN1297300A true CN1297300A (en) 2001-05-30
CN1125551C CN1125551C (en) 2003-10-22

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CN 99123763 Expired - Fee Related CN1125551C (en) 1999-11-22 1999-11-22 Electronic encoder

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847114A (en) * 2010-03-23 2010-09-29 苏州国芯科技有限公司 Method for realizing monitoring of level of signal
CN102436192A (en) * 2011-12-30 2012-05-02 华为技术有限公司 Method and related device for sampling power module address

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847114A (en) * 2010-03-23 2010-09-29 苏州国芯科技有限公司 Method for realizing monitoring of level of signal
CN101847114B (en) * 2010-03-23 2012-07-04 苏州国芯科技有限公司 Method for realizing monitoring of level of signal
CN102436192A (en) * 2011-12-30 2012-05-02 华为技术有限公司 Method and related device for sampling power module address

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