CN102778285B - Power source management device of capacitance keyboard of electronic scale - Google Patents
Power source management device of capacitance keyboard of electronic scale Download PDFInfo
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- CN102778285B CN102778285B CN2012102617172A CN201210261717A CN102778285B CN 102778285 B CN102778285 B CN 102778285B CN 2012102617172 A CN2012102617172 A CN 2012102617172A CN 201210261717 A CN201210261717 A CN 201210261717A CN 102778285 B CN102778285 B CN 102778285B
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Abstract
The invention relates to a power source management device of a capacitance keyboard of an electronic scale. Batteries are connected with a normally opened first electronic switch and a normally opened second electronic switch in parallel mode, a power-on control signal end of a key module of the capacitance keyboard is connected with the second electronic switch, a key value signal end is connected with a key value signal reading end of a master control module, the second electronic switch is connected with a main loop power source module and a power source end of a main loop battery voltage detection module, the main loop power source module is connected with the master control module, a weighing module and a power-on state identification module, a switch control end of the master control module is connected with a normally opened contact of the first electronic switch, and the main loop battery voltage detection module is connected between the second electronic switch and the master control module; the power-on state identification module is connected with a power-on state identification signal end of the capacitance keyboard key module; and the batteries are connected with a power source end of the capacitance keyboard key module through a normally closed third electronic switch and the key power source module, and an auxiliary loop battery voltage detection module is connected between the batteries and the third electronic switch K3 for effectively managing the battery.
Description
Technical field
The present invention relates to a kind of electric power controller of electronic scales electric capacity key board, belong to electronic scales electric capacity button technical field.
Background technology
The electric capacity key board has answered land used very extensive in electronic scales, but, in battery powered situation, the traditional capacitance key board all needs the break-make of carrying out the weighing system general supply with a mechanical switch to control.But because some electronic scaless are to use hot and humid and have corrosive saline solution environment, as the meter weight of food processing scale and work under bad environment.Therefore the mechanical switch of traditional electronic scales is easy to corrosion destruction and produces inefficacy under this environment.Also because of mechanical switch, need on the shell of scale body, offer a key hole, and destroy the complete performance of scale body case, make wet gas and saline solution more easily enter in the scale body, so increased the difficulty of the anti-corruption of internal components of electronic scales simultaneously.But do not adopt mechanical switch to carry out the break-make of weighing system general supply, battery can be because continue to produce and put phenomenon to the power supply of electric capacity key board, so greatly increased the failure probability of battery.
Summary of the invention
Purpose of the present invention provides a kind of and by the switch key be arranged on the electric capacity key board, battery is effectively managed, and can prevent from that battery from producing put and it is carried out to the electric power controller of the electronic scales electric capacity key board of safeguard protection.
The present invention is that the technical scheme achieved the above object is: a kind of electric power controller of electronic scales electric capacity key board, it is characterized in that: comprise battery, the main circuit power module, the button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery and the first electronic switch K1 often opened, the second electronic switch K2 parallel connection of often opening, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, the main circuit power module connects respectively the power end of main control module, the power end of the power end of Weighing module and open state identification module, the input/output terminal of main control module is connected with the input/output terminal of Weighing module, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, be connected major loop battery voltage detection module between the second electronic switch K2 and main control module, the open state identification module connects the start shape identification signal end of electric capacity keyboard key-press module, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, the power end that battery connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module, be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3.
The present invention is that another technical scheme achieved the above object is: a kind of electric power controller of electronic scales electric capacity key board, it is characterized in that: comprise battery, the main circuit power module, the button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery and the first electronic switch K1 often opened, the second electronic switch K2 parallel connection of often opening, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, the main circuit power module connects respectively the power end of main control module and the power end of Weighing module, the input/output terminal of control module is connected with the input/output terminal of Weighing module, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, the start shape identification signal of its open state identification signal termination capacitor keyboard module reads end, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, be connected major loop battery voltage detection module between the second electronic switch K2 and main control module, the power end that battery connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module, be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3.
Electric power controller of the present invention adopts three electronic switches; three electronic switches are connected with main control module with battery, main circuit power module, button power module, major loop battery voltage detection module, minor loop battery voltage detection module and electric capacity keyboard key-press module respectively and form the electric power controller of a uniqueness; can carry out to battery the management and control of science, and prevent that battery from crossing, put into and protect its safety.The present invention is provided with start control signal end on electric capacity keyboard key-press module, can control by the switching on and shutting down button trigger switch machine control signal on electric capacity keyboard key-press module the normally open contact action of the second electronic switch K2, control the work of main circuit power module with this, and by main control module or open state identification module, the open state identification signal is sent on electric capacity keyboard key-press module, make other button all in state of activation, and concrete key-press status feeds back to main control module by the key assignments signal end of electric capacity keyboard key-press module again, control Weighing module work by main control module simultaneously, due to the general supply break-make without separately establishing mechanical switch and control electronic scales, directly use the switching on and shutting down button on the electric capacity key board to carry out the switching on and shutting down operation, can make the casing of electronic scales keep complete sealing, be convenient to the anti-corruption of scale body internal components and the cleaning of exterior case.The present invention is at electronic scales during in open state, the voltage condition of battery can be detected by major loop battery voltage detection module, when cell voltage lower than shutdown during voltage, can point out the user to change battery by main control module, and can control the first electronic switch K1 disconnection, make the power down of main circuit power module and shut down, improving the functional reliability of electronic scales.The present invention is at electronic scales during for a long time in off-mode; also can whether produce and put phenomenon in detection by minor loop battery voltage detection module; when voltage during lower than battery Cross prevention voltage; can stop powering to the button power module by the 3rd electronic switch K3 action; and then guarantee that battery is used safety, and extend battery.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is the structured flowchart of the electric power controller of electronic scales electric capacity key board of the present invention.
Fig. 2 is the another kind of structured flowchart of the electric power controller of electronic scales electric capacity key board of the present invention.
Embodiment
As shown in Figure 1, the electric power controller of electronic scales electric capacity key board of the present invention, comprise battery, main circuit power module, button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery provides working power to each module.Battery and the first electronic switch K1 often opened, the second electronic switch K2 often opened are in parallel, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, electric capacity keyboard key-press module has switching on and shutting down button and other function button, export the start control signal or close machine control signal after switching on and shutting down button closure, control normally open contact closure or the disconnection of the second electronic switch K2 by the switching on and shutting down control signal of electric capacity keyboard key-press module, and realize the switching on and shutting down action of electronic scales.
As shown in Figure 1, the present invention the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, the start control signal of only having output after the switching on and shutting down button of electric capacity keyboard key-press module is pressed and be closed, make the second electronic switch K2 closure that the main circuit power module is obtained electric, the main circuit power module connects respectively the power end of main control module, the power end of the power end of Weighing module and open state identification module, the input/output terminal of main control module is connected with the input/output terminal of Weighing module, main control module is controlled Weighing module work, Weighing module reaches main control module by some metrical informations simultaneously, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, control the first electronic switch K1 closure by main control module, can make battery continue to the main circuit power module for power supply, the main circuit power module connects respectively to main control module again, Weighing module and open state identification module provide working power, it is worked separately.Be connected major loop battery voltage detection module between the second electronic switch K2 and main control module, cell voltage detected by major loop battery voltage detection module, when cell voltage lower than shutdown voltage exportable signal to main control module, battery is changed in prompting, main control module is controlled the first electronic switch K1 and is disconnected, make the power down of main circuit power module and shut down, improving functional reliability also.
As shown in Figure 1, open state identification module of the present invention connects the start shape identification signal end of electric capacity keyboard key-press module, by the open state identification signal to electric capacity keyboard key-press module, make other button on electric capacity keyboard key-press module all in state of activation, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, will feed back to main control circuit by the key assignments signal end in activating concrete key-press status.
As shown in Figure 1, the power end that battery of the present invention connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module, be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3, provide power supply by the button power module to electric capacity keyboard key-press module, when electronic scales during for a long time in off-mode, while by the minor loop battery voltage detection circuit, detecting voltage lower than battery Cross prevention voltage, normally closed electronic switch 3 is disconnected, the power down of electric capacity key circuit, and then guarantee the safety of battery, battery of the present invention can adopt rechargeable battery or disposable battery.
As shown in Figure 2, it is the electric power controller of the electronic scales electric capacity key board of the another kind of structure of the present invention, comprise battery, the main circuit power module, the button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery provides working power to each module, battery and the first electronic switch K1 often opened, the second electronic switch K2 parallel connection of often opening, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, electric capacity keyboard key-press module has switching on and shutting down button and other function button, the start control signal of exporting afterwards in switching on and shutting down button closure or pass machine control signal, control the normally open contact closure of the second electronic switch K2 or disconnect by the switching on and shutting down control signal of electric capacity keyboard key-press module, and the switching on and shutting down that realize electronic scales are moved.
As shown in Figure 2, the present invention the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, only have switching on and shutting down button when electric capacity keyboard key-press module to press and closed and output start control signal, it is electric that the second electronic switch K2 closure obtains the main circuit power module, the main circuit power module connects respectively the power end of main control module and the power end of Weighing module, the input/output terminal of main control module is connected with the input/output terminal of Weighing module, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, control the first electronic switch K1 closure by main control module, can make battery continue to the main circuit power module for power supply, the main circuit power module connects respectively to main control module and Weighing module working power is provided again, it is worked separately.The start shape identification signal of the open state identification signal termination capacitor keyboard module of main control module reads end, main control module by the open state identification signal to electric capacity keyboard key-press module, make other button on electric capacity keyboard key-press module all in state of activation, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, will feed back to main control circuit by the key assignments signal end in activating concrete key-press status.
As shown in Figure 2, be connected major loop battery voltage detection module between the present invention the second electronic switch K2 and main control module, cell voltage detected by major loop battery voltage detection module, when cell voltage is changed battery lower than the exportable signal of shutdown voltage to main control module prompting, main control module is controlled the first electronic switch K1 and is disconnected, make the power down of main circuit power module and shut down, improving functional reliability.
As shown in Figure 2; the power end that battery of the present invention connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module; be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3; provide power supply by the button power module to electric capacity keyboard key-press module; when electronic scales during for a long time in off-mode; while by the minor loop battery voltage detection circuit, detecting voltage lower than battery Cross prevention voltage; normally closed electronic switch 3 is disconnected; the power down of electric capacity key circuit, and then guarantee the safety of battery.
See shown in Fig. 1,2, the power supply termination display module of main circuit power module of the present invention and the power end of communication module, the output terminal of main control module is connected to display module and communication module, can will show battery operated state by display module, and carry out communication by communication module and host computer.
See shown in Fig. 1,2, when the present invention works, when electronic scales during in off-mode, because the first electronic switch K1 and the second electronic switch K2 often open, the 3rd electronic switch K3 is normally closed, and now main circuit power module idle, only have electric capacity keyboard key-press module in low power mode of operation, only switch key in electric capacity keyboard key-press module is in state of activation simultaneously, and the power consumption of whole system is less than 0.3mA.
Switching on and shutting down button in electric capacity keyboard key-press module is pressed closure and is less than 1.2s, the start control signal produced, make closed the second electronic switch K2, closure time disconnects after being controlled at 1.5s～2.2s, the main circuit power module obtains electric, control closed the second electronic switch K2 by main control module again, battery is continued to the main circuit power module for power supply, open state identification module or main control module feedback starting-up signal are to electric capacity keyboard key-press module, make other button all in state of activation, and concrete key-press status feeds back to main control module by the key assignments signal end of electric capacity keyboard key-press module again.
When electronic scales during in open state, the voltage detected by major loop battery voltage detection module is lower than shutdown during voltage, main control module is changed battery through display module prompting user, and controls the first electronic switch K1 and disconnect, and makes the main circuit power power down and shuts down.When electronic scales, during for a long time in off-mode, while by minor loop battery voltage detection module, voltage being detected lower than battery Cross prevention voltage, the 3rd normally closed electronic switch K3 is disconnected, the power down of electric capacity keyboard key-press module, and then guarantee the safety of battery.
After switching on and shutting down button in electric capacity keyboard key-press module is pressed closure and is greater than 2s, the off signal produced feeds back to main control module by the key assignments signal output part of electric capacity keyboard key-press module, main control module is controlled the second electronic switch K2 and is disconnected, the power down of main circuit power module, open state identification module or main control module feedback off signal are to electric capacity keyboard key-press module again, now in electric capacity keyboard key-press module only the switching on and shutting down button in state of activation, thereby further reduce power consumption, extend service time of battery.
Claims (3)
1. the electric power controller of an electronic scales electric capacity key board, it is characterized in that: comprise battery, the main circuit power module, the button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery and the first electronic switch K1 often opened, the second electronic switch K2 parallel connection of often opening, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, the main circuit power module connects respectively the power end of main control module, the power end of the power end of Weighing module and open state identification module, the input/output terminal of main control module is connected with the input/output terminal of Weighing module, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, be connected major loop battery voltage detection module between the second electronic switch K2 and main control module, the open state identification module connects the start shape identification signal end of electric capacity keyboard key-press module, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, the power end that battery connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module, be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3.
2. the electric power controller of an electronic scales electric capacity key board, it is characterized in that: comprise battery, the main circuit power module, the button power module, major loop battery voltage detection module, minor loop battery voltage detection module and main control module and electric capacity keyboard key-press module, battery and the first electronic switch K1 often opened, the second electronic switch K2 parallel connection of often opening, the normally open contact of the start control signal termination second electronic switch K2 of electric capacity keyboard key-press module, the second electronic switch K2 connects respectively the power end of main circuit power module and the power end of major loop battery voltage detection module, the main circuit power module connects respectively the power end of main control module and the power end of Weighing module, the input/output terminal of control module is connected with the input/output terminal of Weighing module, the switch of main control module is controlled the normally open contact of termination the first electronic switch K1, the start shape identification signal of its open state identification signal termination capacitor keyboard module reads end, the key assignments signal-obtaining end of the key assignments signal termination main control module of electric capacity keyboard key-press module, be connected major loop battery voltage detection module between the second electronic switch K2 and main control module, the power end that battery connects electric capacity keyboard key-press module by the 3rd normally closed electronic switch K3 and button power module, be connected to minor loop battery voltage detection mould between the normally closed interlock of battery and the 3rd electronic switch K3.
3. the electric power controller of electronic scales electric capacity key board according to claim 1 and 2, it is characterized in that: the power supply termination display module of described main circuit power module and the power end of communication module, the output terminal of main control module is connected to display module and communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102617172A CN102778285B (en) | 2012-07-26 | 2012-07-26 | Power source management device of capacitance keyboard of electronic scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102617172A CN102778285B (en) | 2012-07-26 | 2012-07-26 | Power source management device of capacitance keyboard of electronic scale |
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| Publication Number | Publication Date |
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| CN102778285A CN102778285A (en) | 2012-11-14 |
| CN102778285B true CN102778285B (en) | 2013-12-11 |
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| CN2012102617172A Expired - Fee Related CN102778285B (en) | 2012-07-26 | 2012-07-26 | Power source management device of capacitance keyboard of electronic scale |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105939039A (en) * | 2016-06-20 | 2016-09-14 | 深圳天珑无线科技有限公司 | Over-discharge early-warning circuit for battery and electronic equipment |
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| CN1201203A (en) * | 1997-06-03 | 1998-12-09 | 索尼株式会社 | Portable information processing device and control method thereof |
| CN101043144A (en) * | 2007-04-06 | 2007-09-26 | 炬力集成电路设计有限公司 | Electrical source managing method of portable electronic products and apparatus thereof |
| CN201118273Y (en) * | 2007-11-16 | 2008-09-17 | 青岛海信电器股份有限公司 | Power supply management circuit |
| CN201708563U (en) * | 2010-05-24 | 2011-01-12 | 庆邦电子（深圳）有限公司 | Circuit device capable of replacing a battery without shutting down |
| CN202793568U (en) * | 2012-07-26 | 2013-03-13 | 奥豪斯仪器（常州）有限公司 | Power-supply management apparatus for electronic-scale capacitance-button keyboard |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3768285B2 (en) * | 1996-02-16 | 2006-04-19 | 佳能電産香港有限公司 | Electronics |
| JP2003216290A (en) * | 2002-01-28 | 2003-07-31 | Denso Corp | Portable terminal device |
-
2012
- 2012-07-26 CN CN2012102617172A patent/CN102778285B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201203A (en) * | 1997-06-03 | 1998-12-09 | 索尼株式会社 | Portable information processing device and control method thereof |
| CN101043144A (en) * | 2007-04-06 | 2007-09-26 | 炬力集成电路设计有限公司 | Electrical source managing method of portable electronic products and apparatus thereof |
| CN201118273Y (en) * | 2007-11-16 | 2008-09-17 | 青岛海信电器股份有限公司 | Power supply management circuit |
| CN201708563U (en) * | 2010-05-24 | 2011-01-12 | 庆邦电子（深圳）有限公司 | Circuit device capable of replacing a battery without shutting down |
| CN202793568U (en) * | 2012-07-26 | 2013-03-13 | 奥豪斯仪器（常州）有限公司 | Power-supply management apparatus for electronic-scale capacitance-button keyboard |
Non-Patent Citations (2)
| Title |
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| JP特开2003-216290A 2003.07.31 |
| JP特开平9-230966A 1997.09.05 |
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Inventor after: Liu Zhengquan Inventor after: Zhao Liping Inventor after: Xiao Kaihua Inventor after: Wang Haitao Inventor after: Ye Zhongwei Inventor after: Zhang Feng Inventor before: Liu Zhengquan Inventor before: Zhang Honghui Inventor before: Zhao Liping Inventor before: Wang Haitao |
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Free format text: CORRECT: INVENTOR; FROM: LIU ZHENGQUAN ZHANG HONGHUI ZHAO LIPING WANG HAITAO TO: LIU ZHENGQUAN ZHAO LIPING XIAO KAIHUA WANG HAITAO YE ZHONGWEI ZHANG FENG |
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