CN102778285A - 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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- CN102778285A CN102778285A CN2012102617172A CN201210261717A CN102778285A CN 102778285 A CN102778285 A CN 102778285A CN 2012102617172 A CN2012102617172 A CN 2012102617172A CN 201210261717 A CN201210261717 A CN 201210261717A CN 102778285 A CN102778285 A CN 102778285A
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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 under battery powered situation, the traditional capacitance key board all need use a mechanical switch to carry out the break-make control of weighing system general supply.But it is, heavy like the meter of food processing scale and work under bad environment because some electronic scaless are to use hot and humid and have in corrosive saline solution environment.Therefore the mechanical switch of traditional electronic scales is easy to corrosion failure takes place under this environment and produces inefficacy.Simultaneously also need on the shell of scale body, offer a key hole, and destroy the complete performance of scale body case, make that wet gas and saline solution more are prone to get in the scale body, so increased the anti-rotten difficulty of the internal components of electronic scales because of mechanical switch.But do not adopt mechanical switch to carry out the break-make of weighing system general supply, battery can be because lasting the generation to the power supply of electric capacity key board be put phenomenon, so increased the failure probability of battery greatly.
Summary of the invention
The object of the invention provides a kind of and through the switch key that is arranged on the electric capacity key board battery is effectively managed, and can prevent that battery from producing to put and it is carried out the electric power controller of the electronic scales electric capacity key board of safeguard protection.
The present invention is that the technical scheme that achieves the above object is: a kind of electric power controller of electronic scales electric capacity key board; It is characterized in that: 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 and the first electronic switch K1 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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 the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; The main circuit power module connects the power end of main control module, the power end of Weighing module and the power end of open state identification module respectively; The input/output terminal of main control module is connected with the input/output terminal of Weighing module; Be connected major loop battery voltage detection module between the normally open contact of the switch of the main control module control termination first electronic switch K1, 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, and the key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end; Battery is connected to minor loop battery voltage detection mould through the power end that the 3rd normally closed electronic switch K3 and button power module connect electric capacity keyboard key-press module between the normally closed interlock of battery and the 3rd electronic switch K3.
The present invention is that another technical scheme that achieves the above object is: a kind of electric power controller of electronic scales electric capacity key board; It is characterized in that: 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 and the first electronic switch K1 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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 the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; The main circuit power module connects the power end of main control module and the power end of Weighing module respectively; The input/output terminal of control module is connected with the input/output terminal of Weighing module; The normally open contact of the switch control termination first electronic switch K1 of main control module, the start shape identification signal of its open state identification signal termination capacitor keyboard module read end; The key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end, is connected major loop battery voltage detection module between the second electronic switch K2 and the main control module; Battery is connected to minor loop battery voltage detection mould through the power end that the 3rd normally closed electronic switch K3 and button power module connect electric capacity keyboard key-press module 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 the 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 constitute the electric power controller of a uniqueness; Can carry out the management and control of science to battery, put into and protect its safety and prevent that battery from crossing.The present invention is provided with start control signal end on electric capacity keyboard key-press module; Can control the normally open contact action of the second electronic switch K2 through the switching on and shutting down button trigger switch machine control signal on the electric capacity keyboard key-press module; Control the work of main circuit power module with this; And the open state identification signal is sent on the electric capacity keyboard key-press module through main control module or open state identification module; Make other button all be in state of activation, and concrete key-press status feed back to the main control module by the key assignments signal end of electric capacity keyboard key-press module again, works through main control module controls Weighing module simultaneously; Owing to need not to establish in addition the general supply break-make that mechanical switch is controlled 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, the anti-corruption of scale body internal components and the cleaning of exterior case are convenient in the sealing that the casing of electronic scales is kept perfectly.When the present invention is in open state at electronic scales; Can detect the voltage condition of battery through major loop battery voltage detection module; When cell voltage is lower than shutdown voltage, can changes battery through main control module prompting user, and can control the first electronic switch K1 and break off; Make the power down of main circuit power module and shut down the functional reliability of raising electronic scales.When the present invention is in off-mode for a long time at electronic scales; Also can whether produce in detection and put phenomenon through minor loop battery voltage detection module; Cross and put protection during voltage when voltage is lower than battery; Can stop to the power supply of button power module through the 3rd electronic switch K3 action, and then guarantee that battery is safe in utilization, and prolong battery serviceable life.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe in 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
See 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 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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; Output start control signal or pass machine control signal after switching on and shutting down button closure; Control the closed or disconnection of normally open contact of the second electronic switch K2 through 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.
See shown in Figure 1; The present invention second electronic switch K2 connects the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; The start control signal of having only 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 got; The main circuit power module connects the power end of main control module, the power end of Weighing module and the power end of open state identification module respectively, and the input/output terminal of main control module is connected with the input/output terminal of Weighing module, the work of main control module controls Weighing module; Weighing module reaches the main control module with some metrical informations simultaneously; The normally open contact of the switch control termination first electronic switch K1 of main control module, closed through the main control module controls first electronic switch K1, battery is continued to the main circuit power module for power supply; The main circuit power module connects respectively to main control module, Weighing module and open state identification module again working power is provided, and it is worked separately.Be connected major loop battery voltage detection module between the second electronic switch K2 and the main control module; Detect cell voltage through major loop battery voltage detection module; When cell voltage is lower than the exportable signal of shutdown voltage to the main control module, point out and change battery, the main control module controls first electronic switch K1 breaks off; Make the power down of main circuit power module and shut down, improve functional reliability also.
See 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; On open state identification signal to electric capacity keyboard key-press module; Make other button on the electric capacity keyboard key-press module all be in state of activation, the key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end, will be in the concrete key-press status of activation and feed back to main control circuit by the key assignments signal end.
See shown in Figure 1; Battery of the present invention is connected to minor loop battery voltage detection mould through the power end that the 3rd normally closed electronic switch K3 and button power module connect electric capacity keyboard key-press module between the normally closed interlock of battery and the 3rd electronic switch K3, power supply is provided for electric capacity keyboard key-press module through the button power module; When electronic scales is in off-mode for a long time; Detect voltage by the minor loop battery voltage detection circuit and be lower than battery and cross and put protection during voltage, normally closed electronic switch 3 is broken off 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.
See 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, 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 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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 have switching on and shutting down button and other function button, start control signal of after switching on and shutting down button closure, exporting or pass machine control signal; Control the closed or disconnection of normally open contact of the second electronic switch K2 through 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.
See shown in Figure 2; The present invention second electronic switch K2 connects the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; Have only and press also closed and output start control signal when the switching on and shutting down button of electric capacity keyboard key-press module, it is electric that the second electronic switch K2 closure gets the main circuit power module, and the main circuit power module connects the power end of main control module and the power end of Weighing module respectively; The input/output terminal of main control module is connected with the input/output terminal of Weighing module; The normally open contact of the switch control termination first electronic switch K1 of main control module, closed through the main control module controls first electronic switch K1, battery is continued 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, and 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; The main control module is with on open state identification signal to the electric capacity keyboard key-press module; Make other button on the electric capacity keyboard key-press module all be in state of activation; The key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end, will be in the concrete key-press status of activation and feed back to main control circuit by the key assignments signal end.
See shown in Figure 2; Be connected major loop battery voltage detection module between the present invention second electronic switch K2 and the main control module; Detect cell voltage through major loop battery voltage detection module, change battery when cell voltage is lower than the prompting of the exportable signal of shutdown voltage to main control module, the main control module controls first electronic switch K1 breaks off; Make the power down of main circuit power module and shut down the raising functional reliability.
See shown in Figure 2; The power end that battery of the present invention connects electric capacity keyboard key-press module through 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, power supply be provided for electric capacity keyboard key-press module through the button power module, when electronic scales is in off-mode for a long time; Detecting voltage by the minor loop battery voltage detection circuit is lower than battery and crosses and put protection during voltage; Normally closed electronic switch 3 is broken off, the power down of electric capacity key circuit, and then guarantee the safety of battery.
See Fig. 1, shown in 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 be with showing battery operated state through display module, and carry out communication through communication module and host computer.
See Fig. 1, shown in 2, when the present invention works, when electronic scales is 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 this moment, the main circuit power module did not have power consumption, had only electric capacity keyboard key-press module to be in low power mode of operation; Only switch key in the electric capacity keyboard key-press module is in state of activation simultaneously, and the power consumption of total system is less than 0.3mA.
Switching on and shutting down button in the electric capacity keyboard key-press module is pressed closed less than 1.2s; The start control signal that produces makes the closed second electronic switch K2, and closure time is broken off after being controlled at 1.5s～2.2s; The main circuit power module gets; By the closed second electronic switch K2 of main control module controls, battery is continued to the main circuit power module for power supply again, open state identification module or main control module feedback starting-up signal to electric capacity keyboard key-press module; Make other button all be in state of activation, and concrete key-press status feed back to the main control module by the key assignments signal end of electric capacity keyboard key-press module again.
When electronic scales is in open state; When being lower than shutdown voltage by the detected voltage of major loop battery voltage detection module; The main control module is changed battery through display module prompting user, and controls the first electronic switch K1 and break off, and makes the main circuit power power down and shuts down.When electronic scales is in off-mode for a long time, detect voltage by minor loop battery voltage detection module and be lower than battery and cross and put protection during voltage, the 3rd normally closed electronic switch K3 is broken off, the power down of electric capacity keyboard key-press module, and then guarantee the safety of battery.
When the switching on and shutting down button in the electric capacity keyboard key-press module press closed greater than 2s after; The off signal that produces feeds back to the main control module by the key assignments signal output part of electric capacity keyboard key-press module; The main control module controls second electronic switch K2 breaks off; The power down of main circuit power module, in open state identification module or main control module feedback off signal to the electric capacity keyboard key-press module again, this moment electric capacity keyboard key-press module only the switching on and shutting down button be in state of activation; Thereby further reduce power consumption, prolong battery service time.
Claims (3)
1. the electric power controller of an electronic scales electric capacity key board; It is characterized in that: 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 and the first electronic switch K1 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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 the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; The main circuit power module connects the power end of main control module, the power end of Weighing module and the power end of open state identification module respectively; The input/output terminal of main control module is connected with the input/output terminal of Weighing module, and the normally open contact of the switch of the main control module control termination first electronic switch K1 is connected major loop battery voltage detection module between the second electronic switch K2 and the main control module; The open state identification module connects the start shape identification signal end of electric capacity keyboard key-press module, and the key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end; Battery is connected to minor loop battery voltage detection mould through the power end that the 3rd normally closed electronic switch K3 and button power module connect electric capacity keyboard key-press module 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, 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 and the first electronic switch K1 that often opens, the second electronic switch K2 that often opens are parallelly connected; 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 the power end of main circuit power module and the power end of major loop battery voltage detection module respectively; The main circuit power module connects the power end of main control module and the power end of Weighing module respectively; The input/output terminal of control module is connected with the input/output terminal of Weighing module; The normally open contact of the switch of the main control module control termination first electronic switch K1, the start shape identification signal of its open state identification signal termination capacitor keyboard module read end, and the key assignments signal of the key assignments signal termination main control module of electric capacity keyboard key-press module reads end, are connected major loop battery voltage detection module between the second electronic switch K2 and the main control module; Battery is connected to minor loop battery voltage detection mould through the power end that the 3rd normally closed electronic switch K3 and button power module connect electric capacity keyboard key-press module 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102778285A true CN102778285A (en) | 2012-11-14 |
| CN102778285B CN102778285B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| 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 |
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2012
- 2012-07-26 CN CN2012102617172A patent/CN102778285B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09230966A (en) * | 1996-02-16 | 1997-09-05 | Kano Densan Hongkong Yugenkoshi | Electronic equipment |
| CN1201203A (en) * | 1997-06-03 | 1998-12-09 | 索尼株式会社 | Portable information processing device and control method thereof |
| JP2003216290A (en) * | 2002-01-28 | 2003-07-31 | Denso Corp | Portable terminal device |
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| 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 |
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Cited By (1)
| 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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| CN102778285B (en) | 2013-12-11 |
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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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Granted publication date: 20131211 Termination date: 20210726 |