CN102315655B - Detection control circuit - Google Patents
Detection control circuit Download PDFInfo
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- CN102315655B CN102315655B CN2010102165195A CN201010216519A CN102315655B CN 102315655 B CN102315655 B CN 102315655B CN 2010102165195 A CN2010102165195 A CN 2010102165195A CN 201010216519 A CN201010216519 A CN 201010216519A CN 102315655 B CN102315655 B CN 102315655B
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 6
- 230000004044 response Effects 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses a detection control circuit, comprising a detecting unit, an amplifying unit and a driving unit, wherein the detecting unit comprises a semiconductor tube with PN (positive negative) junctions which are connected in a circuit loop in series and complete forward conduction in the charging or discharging process of the circuit loop so as to generate tube voltage drop at the two ends of the PN junctions; the amplifying unit is connected with the detecting unit and amplifies the tube voltage drop so as to generate a control voltage; and the driving unit is connected with the amplifying unit and responses the control voltage to output a driving signal. The detection control circuit has the characteristics that the power consumption of the detection control circuit can be effectively reduced by the mode.
Description
[technical field]
The present invention relates to a kind of detection control circuit, particularly the detection control circuit in a kind of management system that can be used for the energy storaging products such as battery.
[background technology]
Energy storaging product; particularly the practical application of lithium battery need to utilize electronic circuit to monitor and control protection it; and monitoring control protection electric circuit, this type of because need, with battery, is connected for a long time; the operating current of its circuit is from battery, and the power consumption of supervision control protection electric circuit directly affects service time of battery and the efficiency after single charge.
In the use of battery, its most of the time is in static condition; namely there is no charging and discharging currents; the operating state that therefore generally will monitor control protection electric circuit is divided into the operating state of sleep state when the charge or discharge electric current is arranged when standing; monitor that the electric current that control protection electric circuit sleep state and operating state consume has bigger difference; generally; as the circuit with microprocessor, can utilize the sleep function of microprocessor to reduce the power consumption of wiring board, so just microprocessor need to be waken up to operating state from sleep state every now and then.
currently used method mainly contains two kinds, a kind of is to utilize amplifier to pass through shunt resistance or Hall current device collection charging and discharging currents, activation of microprocessor when electric current having been detected, but can there be some problems in this kind method in practice, in general the span of charging and discharging currents can be larger, on little current detecting, have very large error, if detected value positively biased, can be because low discharging current can't cause losing protective effect when occurring to put by active processor, if and detected value negative bias, often misoperation, cause average power consumption excessive, this kind method is from all poor on cost or reliability.
Another kind is to utilize the timer that microprocessor carries will own from sleep pattern, to wake up every now and then, and whether wake rear active detecting up once has charging and discharging currents to determine whether to enter operating state at every turn.But this method can be waken processor up continually from sleep pattern, and wake-up period generally can be not oversize, has grown and can make the action response time of baffle excessively slow, and battery occurred to let slip while the warning such as filling and can not immediately process.Because wake Shi Douhui up at every turn, larger impulse current is arranged, the average current in so frequent wakeup process is still larger, but also can be because rush of current affects circuit stability frequently.Therefore, the power consumption that how to reduce the processor wake-up circuit becomes problem anxious to be resolved.
[summary of the invention]
Technical problem solved by the invention is to provide a kind of detection control circuit that can carry out micro-current detecting, to reduce to detect the power consumption of control circuit.
for addressing the above problem, the invention discloses a kind of detection control circuit, comprising: detecting unit, detecting unit comprises that one has the transistor of PN junction, PN junction is serially connected with in circuit loop, and in the charge or discharge process of circuit loop forward conduction, with the two ends at PN junction, produce tube voltage drop, amplifying unit, be connected with detecting unit, and tube voltage drop amplified, and to produce, controls voltage, driver element, connect amplifying unit, and Voltage-output driving signal is controlled in response, wherein, described detecting unit further comprises first resistance in parallel with described PN junction, described driver element comprises: the second resistance, one end of described the second resistance connects the first current potential, the other end of described the second resistance connects the external interrupt pin of processor, control switch, the first end of described control switch is connected in described amplifying unit to receive described control voltage, the second end of described control switch is connected between the other end of the external interrupt pin of described processor and described the second resistance, the 3rd end of described control switch connects the second current potential, the second end of wherein said control switch and the 3rd end conducting under the control of described control voltage, in the charge or discharge process at described circuit loop, to wake described processing up.
According to one preferred embodiment of the present invention, control switch is triode.
According to one preferred embodiment of the present invention, detect control circuit and further comprise the filter unit that is arranged between amplifying unit and driver element.
According to one preferred embodiment of the present invention, filter unit comprises: the 3rd resistance, one end of the 3rd resistance is connected in the first end of control switch, and the other end of the 3rd resistance is connected in the second current potential the 4th resistance, is connected between the first end of the control switch in amplifying unit and driver element; The first electric capacity, an end of the first electric capacity are connected between the first end of the control switch in the 4th resistance and driver element, and the other end of the first electric capacity connects the second current potential.
According to one preferred embodiment of the present invention, the first potential voltage is higher than the second current potential.
According to one preferred embodiment of the present invention, transistor is diode, triode or metal-oxide-semiconductor.
According to one preferred embodiment of the present invention, amplifying unit comprises: operational amplifier, the positive input terminal of operational amplifier connect the P end of PN junction, and the negative input end of operational amplifier connects the N end of PN junction, and the output of operational amplifier connects driver element.
According to one preferred embodiment of the present invention, amplifying unit further comprises: the 5th resistance, the 5th resistance are connected between the negative input end of the N end of PN junction and operational amplifier; The 6th resistance, an end of the 6th resistance are connected between the negative input end of the 5th resistance and operational amplifier, and the other end of the 6th resistance is connected in the output of operational amplifier.
Characteristics of the present invention are, by this kind mode, can effectively reduce the power consumption that detects control circuit.
[accompanying drawing explanation]
Fig. 1 is the circuit diagram of the detection control circuit of one embodiment of the invention.
[embodiment]
The present invention is described in detail below in conjunction with drawings and Examples.Present invention is described as example take the circuit loop of battery management system in the present invention, yet detection control circuit of the present invention can be applied in other circuit fully.
As shown in Figure 1, in a circuit loop of the present invention, comprise battery V1, processor M1, switch S 1, S2, battery V1 carries out charge or discharge at switch S 1, S2 when closed.The invention provides a kind of detection control circuit 1 for the charge or discharge process wake up process device M1 at battery V1.In detecting control circuit 1, comprise detecting unit 01, the amplifying unit 02 that is connected with detecting unit 01 and the driver element 03 that connects the external interrupt pin of amplifying unit 02 and processor M1.
As shown in Figure 1, detecting unit 01 comprises that one has the diode D1 of PN junction, and the PN junction of diode D1 is serially connected with in circuit loop.In the present embodiment, detecting unit 01 comprises that further first resistance R 1, the first resistance R 1 in parallel with the PN junction of diode D1 plays shunting action, to improve the detection threshold of detecting unit 01.In other embodiments, detecting unit 01 can use other transistors with PN junction, for example triode or metal-oxide-semiconductor fully.The PN junction of diode D1 is forward conduction in the charge or discharge process of battery, with the two ends generation tube voltage drop of the PN junction at diode D1.
As shown in Figure 1, amplifying unit 02 comprises operational amplifier U1.The P that the positive input terminal of operational amplifier U1 connects the PN junction of diode D1 holds (namely, the anode of diode D1), the negative input end of operational amplifier U1 connects the N end (that is, the negative terminal of diode D1) of the PN junction of diode D1, and the output of operational amplifier U1 connects driver element 03.In the present embodiment, amplifying unit 02 further comprises the 5th resistance R 5 and the 6th resistance R 6.The 5th resistance R 5 is connected between the negative input end of the N end of PN junction of diode D1 and operational amplifier U1, one end of the 6th resistance R 6 is connected between the negative input end of the 5th resistance R 5 and operational amplifier U1, and its other end is connected in the output of operational amplifier U1.The tube voltage drop that the PN junction two ends of 02 couple of diode D1 of amplifying unit produce is amplified, and to produce, controls voltage, and this control Voltage-output of driver element 03 response drives signal with wake up process device M1.In the present embodiment, by the ratio of adjusting the 5th resistance R 5 and the 6th resistance R 6, can adjust the amplification coefficient of amplifying unit 02.
Driver element 03 comprises the second resistance R 2 and control switch Q1.One end of the second resistance R 2 connects the first current potential VCC, and its other end connects the external interrupt pin of processor M1.The first end of control switch Q1 is connected in amplifying unit 02, to receive the control voltage of its generation, the second end of control switch Q1 is connected between the other end of the external interrupt pin of processor M1 and the second resistance R 2, and the 3rd end of control switch Q1 connects the second current potential VDD.The conducting under the control of controlling voltage of the second end of control switch Q1 and the 3rd end.One end of the 3rd resistance R 3 is connected in the first end of control switch Q1, and its other end is connected in the second current potential VDD.In the present embodiment, control switch Q1 is triode, and first end, the second end and the 3rd end correspond respectively to base stage, collector electrode and the emitter of triode.In other embodiments, control switch Q1 can adopt metal-oxide-semiconductor.In addition, in the present embodiment, the first current potential VCC is higher than the second current potential VDD, and the second current potential VDD is ground connection.Control switch Q1 can also be metal-oxide-semiconductor, relay, thyristor or IGBT pipe.
In addition, the detection control circuit 1 of the present embodiment further comprises the filter unit 04 that is arranged between amplifying unit 02 and driver element 03.In the present embodiment, filter unit 04 comprises the 3rd resistance R 3, the 4th resistance R 4 and the first capacitor C 1.One end of the 3rd resistance R 3 is connected in the first end of control switch Q1, and its other end is connected in the second current potential VDD.The 4th resistance R 4 is connected between amplifying unit 02 and driver element 03, specifically is connected between the first end of control switch Q1 in amplifying unit 02 and driver element 03.One end of the first capacitor C 1 is connected between the 4th resistance R 4 and driver element 03, specifically is connected between the first end of control switch Q1 in the 4th resistance R 4 and driver element 03, and the other end of the first capacitor C 1 connects the second current potential VDD.In other embodiments, filter unit 04 can omit or be realized by the LC filter circuit.
In the present embodiment, amplifying unit 02 is enlarged into control voltage by the tube voltage drop of the PN junction two ends generation of the diode D1 by in detecting unit 01, the second end of control switch Q1 in driver element 03 and the 3rd end conducting by this, and then dragging down the voltage of the external interrupt pin of processor M1, it is equivalent to external interrupt pin at processor M1 and applies one and drive signal and carry out wake up process device M1.By this kind mode, can effectively reduce the power consumption that detects control circuit, and wake up process device timely.
Certainly, those skilled in the art are appreciated that fully detection control circuit 1 of the present invention can be used to control other elements, and the control end that only need be connected to the other end of the second resistance R 2 element to be controlled this moment gets final product.
In the above-described embodiments, only the present invention has been carried out to exemplary description, but those skilled in the art can carry out various modifications to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (8)
1. detection control circuit, it is characterized in that: described detection control circuit comprises:
Detecting unit, described detecting unit comprise that one has the transistor of PN junction, and described PN junction is serially connected with in circuit loop, and in the charge or discharge process of described circuit loop forward conduction, with the two ends at described PN junction, produce tube voltage drop;
Amplifying unit, be connected with described detecting unit, and described tube voltage drop amplified, and to produce, controls voltage;
Driver element, connect described amplifying unit, and respond described control Voltage-output driving signal;
wherein, described detecting unit further comprises first resistance in parallel with described PN junction, described driver element comprises: the second resistance, one end of described the second resistance connects the first current potential, the other end of described the second resistance connects the external interrupt pin of processor, control switch, the first end of described control switch is connected in described amplifying unit to receive described control voltage, the second end of described control switch is connected between the other end of the external interrupt pin of described processor and described the second resistance, the 3rd end of described control switch connects the second current potential, the second end of wherein said control switch and the 3rd end conducting under the control of described control voltage, in the charge or discharge process at described circuit loop, to wake described processor up.
2. detection control circuit according to claim 1 is characterized in that: described control switch is triode, metal-oxide-semiconductor, relay, thyristor or IGBT pipe.
3. detection control circuit according to claim 1, it is characterized in that: described detection control circuit further comprises the filter unit that is arranged between described amplifying unit and described driver element.
4. detection control circuit according to claim 3, it is characterized in that: described filter unit comprises:
The 3rd resistance, an end of described the 3rd resistance is connected in the first end of described control switch, and the other end of described the 3rd resistance is connected in described the second current potential
The 4th resistance, be connected between the first end of the described control switch in described amplifying unit and described driver element;
The first electric capacity, an end of described the first electric capacity are connected between the first end of the described control switch in described the 4th resistance and described driver element, and the other end of described the first electric capacity connects described the second current potential.
5. detection control circuit according to claim 1, it is characterized in that: described the first potential voltage is higher than described the second current potential.
6. detection control circuit according to claim 1, it is characterized in that: described transistor is diode, triode or metal-oxide-semiconductor.
7. detection control circuit according to claim 1, it is characterized in that: described amplifying unit comprises:
Operational amplifier, the positive input terminal of described operational amplifier connect the P end of described PN junction, and the negative input end of described operational amplifier connects the N end of described PN junction, and the output of described operational amplifier connects described driver element.
8. detection control circuit according to claim 7, it is characterized in that: described amplifying unit further comprises:
The 5th resistance, described the 5th resistance are connected between the negative input end of the N end of described PN junction and described operational amplifier;
The 6th resistance, an end of described the 6th resistance are connected between the negative input end of described the 5th resistance and described operational amplifier, and the other end of described the 6th resistance is connected in the output of described operational amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102165195A CN102315655B (en) | 2010-07-02 | 2010-07-02 | Detection control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102165195A CN102315655B (en) | 2010-07-02 | 2010-07-02 | Detection control circuit |
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| CN102315655B true CN102315655B (en) | 2013-11-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103033668B (en) * | 2012-12-18 | 2017-10-13 | 广州飞达音响股份有限公司 | Current detection circuit |
| CN108184218B (en) * | 2018-02-11 | 2024-02-09 | 重庆戒客科技有限公司 | Shared sleep cabin control system |
| CN110007176A (en) * | 2019-04-23 | 2019-07-12 | 成都绎码科技有限公司 | A kind of remote monitoring device and method of electrical equipment working condition |
| CN110572901B (en) * | 2019-08-26 | 2020-06-16 | 北京戴纳实验科技有限公司 | Purify dustless laboratory light intelligent control ware |
| CN110548743A (en) * | 2019-08-26 | 2019-12-10 | 北京戴纳实验科技有限公司 | special laboratory ventilation equipment with arc-shaped inner cavity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237229A (en) * | 2008-01-24 | 2008-08-06 | 深圳华为通信技术有限公司 | Detection control circuit and electronic device |
| CN201233424Y (en) * | 2008-07-30 | 2009-05-06 | 中兴通讯股份有限公司 | Dc fan failure testing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008215949A (en) * | 2007-03-01 | 2008-09-18 | Mitsuba Corp | Current measuring apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237229A (en) * | 2008-01-24 | 2008-08-06 | 深圳华为通信技术有限公司 | Detection control circuit and electronic device |
| CN201233424Y (en) * | 2008-07-30 | 2009-05-06 | 中兴通讯股份有限公司 | Dc fan failure testing apparatus |
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Address after: Room 523808, productivity building, Science Park, Songshan science and Technology Industrial Park, Guangdong, Dongguan, 322324 Patentee after: Dongguan PowerWise New Energy Co.,Ltd. Address before: Room 523808, productivity building, Science Park, Songshan science and Technology Industrial Park, Guangdong, Dongguan, 322324 Patentee before: Dongguan Juwei New Energy Co.,Ltd. |
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Effective date of registration: 20160629 Address after: 523808, Guangdong District, Songshan hi tech Industrial Development Zone, Dongguan, seven industrial North Road, 1 force science and technology center, 3 floor, B District Patentee after: DONGGUAN POWERWISE TECHNOLOGY CO.,LTD. Address before: Room 523808, productivity building, Science Park, Songshan science and Technology Industrial Park, Guangdong, Dongguan, 322324 Patentee before: Dongguan PowerWise New Energy Co.,Ltd. |
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Denomination of invention: Fire detection control circuit for microwave oven Effective date of registration: 20180129 Granted publication date: 20131120 Pledgee: The Bank of Dongguan Songshan Lake Science and technology branch of the Limited by Share Ltd. Pledgor: DONGGUAN POWERWISE TECHNOLOGY CO.,LTD. Registration number: 2018440000033 |
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