CN102607687B

CN102607687B - Electronic scale with manually-operated generating function

Info

Publication number: CN102607687B
Application number: CN201110026361.XA
Authority: CN
Inventors: 万俊彦; 施国兴
Original assignee: SHANGHAI TERAOKA ELECTRONIC CO Ltd
Current assignee: SHANGHAI TERAOKA ELECTRONIC CO Ltd
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2014-04-16
Anticipated expiration: 2031-01-25
Also published as: CN102607687A

Abstract

The invention discloses an electronic scale with a manually-operated generating function. The electronic scale comprises a microgenerator, a power protection module, a power battery management module, a low-voltage output linear voltage regulator, a generating condition monitoring module, a lithium battery, a microprocessor, a sensor and a time-to-digital converter, wherein the microgenerator, the power protection module and the power battery management module are connected in sequence; the power battery management module is connected with the low-voltage output linear voltage regulator, the generating condition monitoring module, the lithium battery and the time-to-digital converter; the microprocessor is connected with the low-voltage output linear voltage regulator, the generating condition monitoring module, the lithium battery and the time-to-digital converter; the time-to-digital converter is connected with the sensor, the microgenerator generates a current, and then the current is sent to the power battery management module by the power protection module. According to the electronic scale, the microgeneratore generates a current, and the generated current is dynamically managed, so that the service life of the electronic scale is prolonged.

Description

The electronic scales with manual electricity generation function

Technical field

The present invention relates to electronic scales field, particularly a kind of electronic scales with manual electricity generation function.

Background technology

Existing electronic scales is, by weight sensor, weight is converted to simulating signal, then is converted into stable digital signal and is presented at the electronic device of corresponding display medium by a series of processing.Because electronic scales need to continue the weight information that demonstration is correct when operation, its power source is generally alternating current, dry cell and all types of accumulator, and comparatively common power source is lead-acid accumulator.While using alternating current as power source, the use of electronic scales can be subject to regional limitation, can only provide the indoor environment of AC outlet to use.When electronic scales moves to outdoor application, conventionally use dry cell or accumulator.Though it is not mercurous that current battery has been accomplished, heavy metal is still the necessary component of various accumulators, as deals with improperly and a fairly large number of words, and these heavy metals will cause and have a strong impact on environment, and the phenomenon of leakage may appear in the long-term use of dry cell.

The existing electronic scales that mechanically produces power adopts direct current generator as microgenerator more, and its advantage is can produce direct current directly for system, rectification circuit that need not be extra.In addition, because it cannot store electric power, only can use the short period after must making before use the power part of scale make a series of mechanical motions.The Another reason that causes above result is that the power consumption of scale body itself is larger, so power consumption is corresponding very fast.

Summary of the invention

Technical matters to be solved by this invention is to provide a kind of electronic scales with manual electricity generation function, and it obtains electric current by microgenerator, and the electric current of generation carries out dynamic management, extends working time.

For solveing the technical problem, the invention provides a kind of electronic scales with manual electricity generation function, the electronic scales with manual electricity generation function comprises microgenerator, power source protective module, power-supply battery administration module, low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, microprocessor, sensor, time-to-digit converter, it is characterized in that, microgenerator, power source protective module, power-supply battery administration module is linked in sequence, power-supply battery administration module and low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, time-to-digit converter connects, microprocessor and low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, time-to-digit converter connects, time-to-digit converter is connected with sensor, microgenerator generation current, by power source protective module, electric current is sent into power-supply battery administration module again.

Preferably, the described electronic scales with manual electricity generation function also comprises keyboard, operation interface liquid crystal display and customer interface liquid crystal display, keyboard, operation interface liquid crystal display are connected with microprocessor, and operation interface liquid crystal display is connected with customer interface liquid crystal display.

Preferably, described power source protective module, power-supply battery administration module, the circuit of low-voltage output linear voltage regulator and generating condition monitoring module comprises power management chip, low-voltage output linear voltage regulator, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 12 resistance, the 15 resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the first electrochemical capacitor, the second electrochemical capacitor, the first diode, the second diode, the first triode and the second triode, power management chip has 20 pins, and one end of the first resistance is connected with the 9th pin of power management chip, and one end of the second resistance is connected with the 7th pin of power management chip, the first resistance, the other end of the second resistance and the 8th electric capacity is connected with the first pin of power management chip, one end of the 3rd resistance is connected with the tenth pin of power management chip, one end of the 4th resistance is connected with the 14 pin of power management chip, one end of the 9th electric capacity and the 5th resistance is connected with the 13 pin of power management chip, one end of the 6th resistance is connected with the 12 pin of power management chip, one end of the 7th resistance is connected with the 8th pin of power management chip, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the equal ground connection of the other end of the 8th electric capacity and the 9th electric capacity, one end of the first electric capacity, the first diode, the first electrochemical capacitor connects the 4th pin of power management chip, the equal ground connection of the other end of the first electric capacity, the first diode, the first electrochemical capacitor, one end of the second electrochemical capacitor connects the 5th pin and the 6th pin of power management chip, the other end ground connection of the second electrochemical capacitor, one end of the second electric capacity and the 3rd electric capacity is connected the emitter of the 15 pin, the 16 pin, the 17 pin and first triode of power management chip, one end of the 12 resistance connects the base stage of the first triode, and the other end of the 12 resistance connects the collector of the second triode, one end of the 15 resistance connects the base stage of the second triode, and the other end of the 15 resistance connects the emitter of the second triode, one end of the 4th electric capacity and the 5th electric capacity is connected the first pin of low-voltage output linear voltage regulator, the collector of the first triode connects the 3rd pin of low-voltage output linear voltage regulator, and one end of the 6th electric capacity, the 7th electric capacity, the second diode connects the 5th pin of linear voltage regulator.

Positive progressive effect of the present invention is: the present invention adopts three phase alternating current motor as the microgenerator of power generation part, and efficiency approaches three times of direct current generator.As made before use abundant generating campaign, can no longer make under the prerequisite of any machine power generating action and using more than 300 hours, flying power reaches the order of magnitude and promotes.

Accompanying drawing explanation

Fig. 1 is the theory diagram that the present invention has the electronic scales of manual electricity generation function.

Fig. 2 is the schematic diagram of the circuit of power source protective module in the present invention, power-supply battery administration module, low-voltage output linear voltage regulator and generating condition monitoring module.

Embodiment

Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the present invention that intactly illustrates.

As shown in Figure 1, the electronic scales that the present invention has manual electricity generation function comprises microgenerator 1, power source protective module 2, power-supply battery administration module 3, low-voltage output linear voltage regulator 4, generating condition monitoring module 5, lithium battery 6, microprocessor 7, sensor 8, time-to-digit converter 9, keyboard 10, operation interface liquid crystal display 11 and customer interface liquid crystal display 12, microgenerator 1, power source protective module 2, power-supply battery administration module 3 is linked in sequence, power-supply battery administration module 3 and low-voltage output linear voltage regulator 4, generating condition monitoring module 5, lithium battery 6, time-to-digit converter 9 connects, microprocessor 7 and low-voltage output linear voltage regulator 4, generating condition monitoring module 5, lithium battery 6, time-to-digit converter 9, keyboard 10, operation interface liquid crystal display 11 connects, time-to-digit converter 9 is connected with sensor 8, operation interface liquid crystal display 11 is connected with customer interface liquid crystal display 12.

Microgenerator 1 uses threephase asynchronous machine as power generation part, efficiency approaches three times of direct current generator, motion by mechanical part drives threephase asynchronous machine to rotate, make its inner conductor at the magnetic field internal cutting magnetic line of force, at inner induction electromotive force and the induction current of producing of conductor, it is the induction current of 120 degree that extraneous driving force rotor is produced under the effect in magnetic field differs each other.Then via power source protective module 2, stable induction current is sent into power-supply battery administration module 3, when scale body is not used by user, now power-supply battery administration module 3 is filled with in lithium battery 6 standby by the electric energy after microgenerator 1 conversion, and when electronic scales is in running order, power-supply battery administration module 3 can be exported constant operating voltage for processor 7 through low-voltage output linear voltage regulator 4, sensor 8, time-to-digit converter 9 is used, if electricity generated manually acting is more greatly electric energy that microgenerator 1 produces, exceeds and drive the required energy of whole system consuming time, power-supply battery administration module 3 can be standby in the lithium battery 6 of its connection by unnecessary electric current dynamic memory, the working condition of the condition monitoring module 5 of simultaneously generating electricity in long-term work condition monitoring power-supply battery administration module 3 and read in real time the voltage of lithium battery 6 and show current electric quantity.During scale body running, time-to-digit converter 9 can be transmitted in the weight information on sensor 8 in real time microprocessor 7 (wherein microprocessor 7 is super low-power consumption microprocessors) and process, user can operate described electronic scales by keyboard 10, and from operation interface liquid crystal display 11 and customer interface liquid crystal display 12, reads corresponding accurate measurement value.

The principle of work of electronic scales that the present invention has manual electricity generation function is as follows: it is the three phase generator using in described electronic scales that the driving electric power of electronic scales stems from microgenerator, the gear of the to-and-fro movement drive motor of the mechanical part by weighing platform rotates three phase generator, motor internal conductor is at the magnetic field internal cutting magnetic line of force thus, produce induction electromotive force, the electric energy that can drive scale body running is provided after overcommutation.Now; power source protective module is responsible for preventing that the motor in work from the situation that power-supply battery administration module can bear maximum input voltage occurring to surpass; when this thing happens; the electric energy of off-rating is temporarily stored in electric capacity; after recovering normal input voltage range, discharge again, thereby reach voltage regulation result.Power-supply battery administration module is to drive the electric energy of scale body running to be supplied in electronic scales, if the electric current that the portion of prime self power generation simultaneously produces surpasses in the situation of the required electric current of the normal use of scale body, or when not opening, electronic scales produces electric energy, power-supply battery administration module will be unnecessary electrical power storage in lithium battery, in order to using when not doing electricity generated manually, microprocessor now also can be done real-time monitoring and show duty and the current dump energy of lithium battery of generating set module.As everyone knows, lithium battery is not containing cadmium, plumbous, mercury etc. have the element of pollution to environment, and nuisanceless, now be widely used in consumer level digital domain, and the lithium polymer battery using in the present invention is used the solid of colloidal state, compare the lithium ion battery of existing extensive application on market without battery leakage problem, because its inside battery is not containing liquid electrolyte, therefore can be designed to various shape, and the flexible distortion of material, can in single, make multiple layer combination and reach high voltage, the onesize lithium ion battery of volume ratio exceeds one times, therefore safer more reliable than other various forms of batteries.Select the linear voltage regulator of the ultralow quiescent current of microprocessor collocation low-voltage of super low-power consumption, to annotate super low energy consumption environmental protection concept.And the analog-digital converter using in common electronic scales because cannot normally working under low-voltage environment, select novel low-voltage time-to-digit converter, it can, by obtaining accurate gravimetric value to calculating the generating dutation that fills of electric capacity, also guarantee precision in the time of low energy consumption.

As shown in Figure 2, power source protective module, power-supply battery administration module, the circuit of low-voltage output linear voltage regulator and generating condition monitoring module comprises power management chip U1, low-voltage output linear voltage regulator U2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 14 resistance R 14, the 15 resistance R 15, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, the 9th capacitor C 9, the first electrochemical capacitor E1, the second electrochemical capacitor E2, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the first triode Q1 and the second triode Q2.Wherein power source protective module comprises the first capacitor C 1, the first diode D1, the first electrochemical capacitor E1; power-supply battery administration module comprises the second capacitor C 2, the 3rd capacitor C 3, the 8th capacitor C 8, the 9th capacitor C 9, the second electrochemical capacitor E2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, power management chip U1, and generating condition monitoring module comprises the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R the 10, the 13 resistance R the 13, the 14 resistance R 14, power management chip U1.Power management chip U1 has 20 pins, one end of the first resistance R 1 is connected with the 9th pin of power management chip U1, one end of the second resistance R 2 is connected with the 7th pin of power management chip U1, the first resistance R 1, the other end of the second resistance R 2 and the 8th capacitor C 8 is connected with the first pin of power management chip U1, one end of the 3rd resistance R 3 is connected with the tenth pin of power management chip U1, one end of the 4th resistance R 4 is connected with the 14 pin of power management chip U1, one end of the 9th capacitor C 9 and the 5th resistance R 5 is connected with the 13 pin of power management chip U1, one end of the 6th resistance R 6 is connected with the 12 pin of power management chip U1, one end of the 7th resistance R 7 is connected with the 8th pin of power management chip U1, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the equal ground connection of the other end of the 8th capacitor C 8 and the 9th capacitor C 9.One end of the first capacitor C 1, the first diode D1, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the first electrochemical capacitor E1 connects the 4th pin of power management chip U1, the equal ground connection of the other end of the first capacitor C 1, the first diode D1, the first electrochemical capacitor E1.One end of the second electrochemical capacitor E2 connects the 5th pin and the 6th pin of power management chip U1, the other end ground connection of the second electrochemical capacitor E2.One end of the second capacitor C 2 and the 3rd capacitor C 3 is connected the emitter of the 15 pin, the 16 pin, the 17 pin and the first triode Q1 of power management chip U1, one end of the 12 resistance R 12 connects the base stage of the first triode Q1, and the other end of the 12 resistance R 12 connects the collector of the second triode Q2.One end of the 15 resistance R 15 connects the base stage of the second triode Q2, and the other end of the 15 resistance R 15 connects the emitter of the second triode Q2.One end of the 4th capacitor C 4 and the 5th capacitor C 5 is connected the first pin of low-voltage output linear voltage regulator U2, the collector of the first triode Q1 connects the 3rd pin of low-voltage output linear voltage regulator U2, one end of the 6th capacitor C 6, the 7th capacitor C 7, the second diode D2 connects the 5th pin of linear voltage regulator, the equal ground connection of the second, the 4th pin of the other end and linear voltage regulator.Power management chip participates in the work of power-supply battery administration module and generating condition monitoring module simultaneously.Power management chip adopts the BQ240 family chip of TIX as power unit main control chip, wide input voltage range, the difficult problem that can solve the electric current of dynamic management drive system and give lithium cell charging electric current.The another one benefit of BQ240 family chip is exactly that circuit can be totally independent of microprocessor work, and maximum charge time, maximum charging current, charging modes all can be set voluntarily according to concrete service condition.The voltage producing at microgenerator is during higher than the dormancy voltage of power management chip U1, power management chip is started working, so electronic scales start work, the needed electric current warp let-off being crossed to the first triode Q1 sends in low-voltage output linear voltage regulator U2, thereby obtain stable system voltage and pass through after the 6th capacitor C 6 and the 7th capacitor C 7 filtering, for system, use, the second diode D2 plays and prevents that low-voltage output linear voltage regulator U2 under abnormal conditions, short-circuit conditions occurring.

Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, do not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.

Claims

1. an electronic scales with manual electricity generation function, the electronic scales with manual electricity generation function comprises microgenerator, power source protective module, power-supply battery administration module, low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, microprocessor, sensor, time-to-digit converter, it is characterized in that, microgenerator, power source protective module, power-supply battery administration module is linked in sequence, power-supply battery administration module and low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, time-to-digit converter connects, microprocessor and low-voltage output linear voltage regulator, generating condition monitoring module, lithium battery, time-to-digit converter connects, time-to-digit converter is connected with sensor, microgenerator generation current, by power source protective module, electric current is sent into power-supply battery administration module again, described power source protective module, power-supply battery administration module, the circuit of low-voltage output linear voltage regulator and generating condition monitoring module comprises power management chip, low-voltage output linear voltage regulator, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 12 resistance, the 15 resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the first electrochemical capacitor, the second electrochemical capacitor, the first diode, the second diode, the first triode and the second triode, described power management chip adopts the BQ240 family chip of TIX, power management chip has 20 pins, one end of the first resistance is connected with the 9th pin of power management chip, one end of the second resistance is connected with the 7th pin of power management chip, the first resistance, the other end of the second resistance and the 8th electric capacity is connected with the first pin of power management chip, one end of the 3rd resistance is connected with the tenth pin of power management chip, one end of the 4th resistance is connected with the 14 pin of power management chip, one end of the 9th electric capacity and the 5th resistance is connected with the 13 pin of power management chip, one end of the 6th resistance is connected with the 12 pin of power management chip, one end of the 7th resistance is connected with the 8th pin of power management chip, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the equal ground connection of the other end of the 8th electric capacity and the 9th electric capacity, one end of the first electric capacity, the first diode, the first electrochemical capacitor connects the 4th pin of power management chip, the equal ground connection of the other end of the first electric capacity, the first diode, the first electrochemical capacitor, one end of the second electrochemical capacitor connects the 5th pin and the 6th pin of power management chip, the other end ground connection of the second electrochemical capacitor, one end of the second electric capacity and the 3rd electric capacity is connected the emitter of the 15 pin, the 16 pin, the 17 pin and first triode of power management chip, one end of the 12 resistance connects the base stage of the first triode, and the other end of the 12 resistance connects the collector of the second triode, one end of the 15 resistance connects the base stage of the second triode, and the other end of the 15 resistance connects the emitter of the second triode, one end of the 4th electric capacity and the 5th electric capacity is connected the first pin of low-voltage output linear voltage regulator, the collector of the first triode connects the 3rd pin of low-voltage output linear voltage regulator, and one end of the 6th electric capacity, the 7th electric capacity, the second diode connects the 5th pin of linear voltage regulator.