CN206876842U - Measuring instrument power supply dump energy on-line checking circuit - Google Patents
Measuring instrument power supply dump energy on-line checking circuit Download PDFInfo
- Publication number
- CN206876842U CN206876842U CN201720628968.8U CN201720628968U CN206876842U CN 206876842 U CN206876842 U CN 206876842U CN 201720628968 U CN201720628968 U CN 201720628968U CN 206876842 U CN206876842 U CN 206876842U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- power supply
- controller
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Secondary Cells (AREA)
Abstract
The utility model discloses a kind of measuring instrument power supply dump energy on-line checking circuit, including power supply, the discharge circuit for connecting power supply, the voltage detecting circuit detected to supply voltage, the temperature sensing circuit that temperature detection is carried out to power supply that electric energy is provided for table end system, controller, the data storage circuitry and output control circuit for connecting controller；The output control circuit includes radio communication device and controls radio communication device to open the first switch circuit with closure, and the supply voltage that the controller detects according to the voltage detecting circuit is to control the work of radio communication device.The utility model has the advantages that：On-line checking can be carried out to battery dump energy；It is low in energy consumption；In dump energy deficiency, remote prompting or alarm can be carried out.
Description
Technical field
Electric power detection technical field is the utility model is related to, more particularly, to a kind of low-power consumption, with temperature detecting function,
It is capable of the measuring instrument power supply dump energy on-line checking circuit of real-time online detection power supply dump energy.
Background technology
With the development and the improvement of people's living standards of measuring instrument technology, the power supply mode of measuring instrument power supply,
Gradually by traditional alkaline cell, develop to lithium battery, on the one hand, replacing number can be reduced, mitigate burden for users, the opposing party
Face, the risk for artificially causing damage when changing battery to measuring instrument by battery plus-negative plate can also be reduced.
It is desirable to predict the residue of lithium battery in advance using electricity so as to for assessing the remaining usage time of battery.By
Influenceed in the operating voltage of lithium battery by environment temperature, and the discharge voltage time curve of lithium battery is generally all relatively more flat
It is smooth, it is kept approximately constant in most of capacity section.Above-mentioned factor, cause individually to use voltage detecting circuit, can not be with
Voltage is accurately detected to dump energy.Furthermore, it is desirable to dump energy information is periodically sent to server, to carry out
Statistics and analysis.Meanwhile when battery occurs abnormal, it is necessary to which feedback of the information to related personnel is carried out into timely processing immediately.
Chinese patent notification number is CN102033204A, on April 27th, 2011, discloses a kind of battery electric quantity detection electricity
Road, electronic system and method, the present invention in battery power detection circuit include：The voltage detecting electricity being connected with battery pack
Road, for measuring the open-circuit voltage of multiple battery units in battery pack respectively；And the place being connected with the voltage detecting circuit
Manage device, for judging minimum open circuit voltage from the open-circuit voltage of multiple battery units, and according to the minimum open circuit voltage and
Relation between state-of-charge corresponding to battery unit with the minimum open circuit voltage judges the first of the battery pack
State-of-charge；Battery power detection circuit, electronic system and method using the present invention can relatively accurately judge electricity
The dump energy of pond group.But its weak point is：The battery power detection circuit can not realize that real-time online detects, and can not disappear
Except the influence that temperature parameter detects for battery dump energy, cause residual capacity measurement inaccurate.
Utility model content
The utility model is unable to real-time online detection in the prior art in order to overcome, and can not eliminate temperature parameter influences not
Foot, it is proposed that a kind of low-power consumption, with temperature detecting function, the measuring instrument for being capable of real-time online detection power supply dump energy supplies
Power supply dump energy on-line checking circuit.
To achieve these goals, the utility model employs following technical scheme：
A kind of measuring instrument power supply dump energy on-line checking circuit, including the electricity of electric energy is provided for table end system
Source, the discharge circuit for connecting power supply, the voltage detecting circuit detected to supply voltage, the temperature that temperature detection is carried out to power supply
Degree detection circuit, controller, the data storage circuitry and output control circuit for connecting controller；The discharge circuit, temperature inspection
Slowdown monitoring circuit and voltage detecting circuit are connected in parallel, and the discharge circuit, temperature sensing circuit and voltage detecting circuit output end connect
Connect the controller, the output control circuit include radio communication device and control radio communication device open with close the
One on-off circuit, the supply voltage that the controller detects according to the voltage detecting circuit is to control the work of radio communication device
Make.
The utility model is by temperature sensing circuit, discharge circuit, voltage detecting circuit, on-off circuit, radio communication device
With data incorporated into memory circuitry, on-line checking and the storage of power source temperature and supply voltage are realized.
Preferably, temperature sensing circuit includes filter capacitor C2, divider resistance R6 and thermistor RM1, thermistor
RM1 one end and power electric connection, the thermistor RM1 other ends are electrically connected with filter capacitor C2, divider resistance R6 and controller respectively
Connect, filter capacitor C2 and the divider resistance R6 other ends are grounded.
Preferably, discharge circuit includes second switch circuit and constant resistance circuit, the second switch circuit difference
Electrically connected with power supply, constant resistance circuit and controller.
Preferably, discharge circuit includes second switch circuit and constant-current source circuit, second switch circuit respectively with power supply,
Constant-current source circuit and controller electrical connection.
Preferably, second switch circuit includes electric pull-up resistor R4, FET Q2, current-limiting resistance R7 and triode
Q3, the constant-current source circuit include resistance R9, resistance R10, load resistance R11 and constant current source chip；Triode Q3 base stage with
Resistance R7 one end is electrically connected, and the resistance R7 other end is electrically connected with the controller, triode Q3 grounded emitter, triode Q3's
Colelctor electrode electrically connects with resistance R4 one end and FET Q2 grid respectively, the resistance R4 other end respectively with FET
Q2 source electrode and power electric connection, FET Q2 drain electrode electrically connect with constant current source chip, resistance R9 one end respectively with electricity
R11 and resistance R10 one end electrical connection is hindered, the resistance R9 other end electrically connects with constant current source chip, resistance R11 another termination
Ground, the resistance R10 other end electrically connect with constant current source chip.
Preferably, voltage detecting circuit includes the 3rd on-off circuit and pressure filter circuit, the 3rd on-off circuit difference
Electrically connected with power supply, pressure filter circuit and controller, pressure filter circuit is electrically connected with the controller.
Preferably, the 3rd on-off circuit includes current-limiting resistance R5, pull-up resistor R8, triode Q1 and triode Q4, institute
Stating pressure filter circuit includes divider resistance R1, divider resistance R2 and filter capacitor C1；Triode Q4 base stage and R8 one end electricity
Connection, the R8 other ends are electrically connected with the controller, and triode Q4 grounded emitter, triode Q4 colelctor electrode and R5 one end are electrically connected
Connect, the R5 other ends electrically connect with triode Q1 base stages, triode Q1 emitter stage and power electric connection, triode Q1 colelctor electrode
Electrically connected with resistance R1 one end, the R1 other ends electrically connect with resistance R2 one end, electric capacity C1 one end and controller respectively, and resistance R2 is another
One end and the electric capacity C1 other ends are grounded.
Preferably, also including power-supplying circuit, the power-supplying circuit includes the electricity with detection of power loss function
Pond isolation circuit and electric power management circuit, battery isolation circuitry electrically connect with power supply and electric power management circuit respectively, power management
Circuit is electrically connected with the controller.
Therefore, the utility model has the advantages that：（1）Discharge circuit is combined with voltage detecting circuit, in electricity
Before the electric discharge of source and in discharge process, voltage detecting can be carried out, realizes the on-line checking of battery dump energy；（2）Use
Temperature sensor detects power source temperature, makes lithium battery at different temperatures, can carry out accurate measurement to dump energy grade
With division.（3）When that need not power, first switch circuit, second switch circuit, the 3rd on-off circuit and temperature sensing circuit
All in open-circuit condition, back-end circuit does not consume electricity, realizes low-power consumption；（4）By residual capacity measurement circuit and radio communication
Device combines, and in dump energy deficiency, can carry out remote prompting or alarm.
Brief description of the drawings
Fig. 1 is a kind of system block diagram of the present utility model；
Fig. 2 is a kind of circuit diagram of discharge circuit of the present utility model；
Fig. 3 is a kind of circuit diagram of voltage detecting circuit of the present utility model；
Fig. 4 is a kind of circuit diagram of temperature sensing circuit of the present utility model；
Fig. 5 is a kind of circuit diagram of power-supplying circuit of the present utility model；
Fig. 6 is a kind of circuit diagram of data storage circuitry of the present utility model；
Fig. 7 is a kind of circuit diagram of liquid crystal display circuit of the present utility model；
Fig. 8 is a kind of circuit diagram of valve driving circuit of the present utility model.
In figure：Temperature sensing circuit 1, battery isolation circuitry 2, electric power management circuit 3, second switch circuit 4, constant resistance
Circuit 5, constant-current source circuit 6, the 3rd on-off circuit 7, pressure filter circuit 8, power supply 9, output control circuit 10, data storage electricity
Road 11, first switch circuit 12, radio communication circuit 13, controller 14, power-supplying circuit 15, discharge circuit 16, voltage inspection
Slowdown monitoring circuit 17, liquid crystal display circuit 18 and valve driving circuit 19.
Embodiment
The utility model is described further with embodiment below in conjunction with the accompanying drawings：
Implementation column 1
Embodiment as shown in Figure 1 is a kind of measuring instrument power supply dump energy on-line checking circuit, it is characterized in that,
Including the power supply 9, the discharge circuit 16 for connecting power supply, the voltage detected to supply voltage inspection that electric energy is provided for table end system
Slowdown monitoring circuit 17, the temperature sensing circuit 1 that temperature detection is carried out to power supply, controller 14, the data storage circuitry for connecting controller
11 and output control circuit 10；Discharge circuit 16, temperature sensing circuit 1 and voltage detecting circuit 17 are connected in parallel, discharge circuit
16th, temperature sensing circuit 1 connects the controller with the output end of voltage detecting circuit 17, and output control circuit 10 includes channel radio
T unit 13 and control radio communication device open the first switch circuit 12 with closure, and controller 14 is according to the voltage detecting
The supply voltage that circuit 17 detects is to control the work of radio communication device 13.
In addition, also including power-supplying circuit 15, power-supplying circuit 15 includes battery isolation circuitry 2 and power management electricity
Road 3, battery isolation circuitry 2 electrically connect with power supply 9, and electric power management circuit 3 electrically connects with controller 14.
As shown in Fig. 2 discharge circuit 16 includes second switch circuit 4 and constant resistance circuit 5, second switch circuit 4 divides
Do not electrically connected with power supply 9, constant resistance circuit 5 and controller 14.Second switch circuit 4 includes resistance R4, FET Q2, electricity
R7 and triode Q3 is hindered, constant resistance circuit 5 includes resistance R3, and triode Q3 base stage electrically connects with resistance R7 one end, resistance
The R7 other end is electrically connected with the controller, triode Q3 grounded emitter, and triode Q3 colelctor electrode is respectively with resistance R4's
One end and FET Q2 grid electrically connect, and the source electrode and lithium battery of the resistance R4 other end respectively with FET Q2 are electrically connected
Connect, FET Q2 drain electrode electrically connects with resistance R3 one end, resistance R3 other end ground connection.
The working condition of discharge circuit 16 is controlled by second switch circuit 4.When discharge circuit 16 does not work, Ctr1 pins
Level is set low by drawing.At this moment, triode Q3 is in cut-off state.Now, FET Q2 grid, does not determine state.R4
As pull-up resistor, move Q2 grid to high level, level is changed into determination state.Q2 source electrode ends to drain electrode.Now,
FET Q2 drain electrode is not powered for constant resistance circuit 5, realizes low-power consumption.
When discharge circuit 16 needs work, Ctr1 pins are set to high level.At this moment, triode Q3 is in saturation conduction shape
State, Q3 colelctor electrode are launched pole and move low level to.Meanwhile Q2 grid moves low level, Q3 source electrode to by Q3 colelctor electrode
Turned on to drain electrode.Now, FET Q2 drain electrode is powered for late-class circuit, and constant resistance circuit 5 is started working.
As shown in figure 3, voltage detecting circuit 17 includes the 3rd on-off circuit 7 and pressure filter circuit 8, the 3rd on-off circuit
7 electrically connect with power supply 9 and controller 14 respectively, and pressure filter circuit 8 electrically connects with controller 14.3rd on-off circuit 7 includes
Resistance R5, resistance R8, triode Q1 and triode Q4, pressure filter circuit 8 include resistance R1, resistance R2 and electric capacity C1, three poles
Pipe Q4 base stage is electrically connected with R8 one end, and the R8 other ends are electrically connected with the controller, triode Q4 grounded emitter, triode Q4
Colelctor electrode electrically connected with R5 one end, the R5 other ends electrically connect with triode Q1 base stages, triode Q1 emitter stage and lithium battery
Electrical connection, triode Q1 colelctor electrode electrically connects with resistance R1 one end, the R1 other ends respectively with resistance R2 one end, electric capacity C1 one end
Electrically connected with controller, the resistance R2 other ends and the electric capacity C1 other ends are grounded.
Voltage detecting circuit 17 selects intermittent conduction, partial pressure sampling by the 3rd on-off circuit 7.Examined when not needing voltage
When slowdown monitoring circuit 17 works, Ctr2 pins, which are drawn, sets low level.Triode Q4's is in cut-off state.Triode Q1 emitter stage arrives
Collector cut-off.The colelctor electrode of triode is not powered for pressure filter circuit 8, realizes low-power consumption.When needing circuit to work,
Ctr2 pins are set to high level.Triode Q4 is in saturation conduction state, and Q4 colelctor electrode is launched pole drawing and sets low level, i.e.,
GND.Thus, R5 and triode Q4 connection end, which is drawn, sets low level, i.e. GND.Triode Q1 emitter stage turns on to colelctor electrode.
Now, the current collection of triode extremely pressure filter circuit 8 is powered, and pressure filter circuit 8 is started working.
BAT_AD is connected with controller pin, and controller 14 can be connected to BAT_AD pins by the configuration of inside
Difference in functionality module.When starting voltage detecting function, BAT_AD pins are set to AD sampling modules, carry out voltage AD（Analog
Conversion）Sampling.Now, AD sampling modules power consumption is relatively large.After voltage detecting terminates, by BAT_AD pins inside controller
State is reconfigured for input state, or output is low level.Input state is such as configured to, BAT_AD pin level states can
Drawn by R2 resistance and set low level, to reach the purpose for reducing power consumption.
Output control circuit 10 includes first switch circuit 12 and radio communication device 13, and controller 14 is opened with first respectively
Powered-down road 12 and radio communication device 13 electrically connect.First switch circuit 12 include resistance R27, FET Q7, resistance R28 and
Triode Q8, triode Q8 base stage are electrically connected with resistance R28 one end, and the resistance R28 other end is electrically connected with the controller, three poles
Pipe Q8 grounded emitter, triode Q8 colelctor electrode electrically connect with resistance R27 one end and FET Q7 grid respectively,
The resistance R27 other end is connected with FET Q7 source electrode and lithium battery respectively, FET Q2 drain electrode and channel radio
T unit electrically connects.
First switch circuit 12 is used for controlling the working condition of radio communication device 13.When radio communication device 13 does not work
When, Ctr3 pins, which are drawn, sets low level.At this moment, triode Q8 is in cut-off state.Now, FET Q7 grid, does not have
Determine state.R27 moves Q7 grid to high level, level is changed into determination state as pull-up resistor.Q7 source electrode to leakage
End pole.Now, FET Q7 drain electrode is not powered for late-class circuit, realizes low-power consumption.
When radio communication device 13 needs work, Ctr3 pins are set to high level.At this moment, triode Q8 is led in saturation
Logical state, Q8 colelctor electrode are launched pole and move low level to.Meanwhile Q7 grid moves low level to by Q8 colelctor electrode, Q7's
Source electrode turns on to drain electrode.Now, FET Q7 drain electrode is powered for late-class circuit, and late-class circuit is started working.
As shown in figure 4, temperature sensing circuit 1 includes electric capacity C2, resistance R6 and thermistor RM1.Thermistor RM1 is straight
Connect and be attached on power supply 9, be connected using wire with pcb board, then coordinate resistance R6 to carry out partial pressure, realize the detection to temperature.C2 makees
For filter capacitor, it is therefore an objective to AD sampling inputs are filtered, effect is when TMP_CTR conducting moments, reduces TMP_AD and adopts
Sample voltage ripple, voltage is set to keep stable.
As shown in figure 5, power-supplying circuit 15 includes battery isolation circuitry 2 and electric power management circuit 3, battery isolation circuitry
2 electrically connect with power supply 9, and electric power management circuit 3 electrically connects with controller 14.
Battery isolation circuitry 2 includes diode D1, and isolation circuit has detection of power loss arbitration functions；When detection composite battery
When, discharge circuit 16 and electric capacity can be separated, realize the detection of composite battery dump energy；Diode D1 can prevent electricity
Pond reversal connection causes electronic component and cell damage.
Electric power management circuit 3 includes reduction voltage circuit chip U2, electric capacity C3, electric capacity C4 and electric capacity C5.The voltage of power supply 9 is reduced
Voltage to late-class circuit work is powered.C3 is electrochemical capacitor, and as low frequency filtering electric capacity, its effect is to work as load current
During instantaneous variation, the stability of output voltage is improved.C4, C5 are nonpolarity ceramic condenser, as shunt capacitance, carry out high frequency filter
Ripple.
P1 is the interface of power supply 9, and P2 is capacitive interface.If the voltage of power supply 9 3.6 between 3.9V, it is necessary to by power supply 9
P1 and P2 interfaces are connected on respectively with chemical electric capacity, it is therefore an objective to when system needs the high current to power, are powered by chemical electric capacity.Behaviour
After the completion of work, chemical electric capacity is charged by lithium battery low current.The chemical electric capacity of P2 interfaces refers to progress high current and put
The electrochemical capacitor of electricity.
As shown in fig. 6, data storage circuitry 11 includes storage chip, resistance R15, resistance R17 and electric capacity C6.When needs take
When reading data in memory, power control pin E2_CTR is put into high level, powered to memory.After operation terminates, by power supply
Controlling switch E2_CTR is drawn and sets low level, and memory is stopped power supply.E2_SDA and E2_SCL is the data transmission interface of memory,
Using I2C bus protocols, output digit signals.Memory be for store with lithium battery capacity data table related, it is particularly relevant
Parameter is as follows：（1）Battery variety, the lithium battery of one or more models can be stored simultaneously；（2）Temperature, voltage, resistance or electric current
Parameter；（3）Thermistor temp and resistance mapping table.
As shown in fig. 7, liquid crystal display circuit 18 includes lattice lcd LCD, triode Q5, triode Q6, resistance R12, electricity
Hinder R13, resistance R14, resistance R16, resistance R18, resistance R19, resistance R20, resistance R21 and electric capacity C8.Lattice lcd be for
Show lithium battery dump energy information.Its power supply is the shunt capacitance by lithium battery after diode-isolated, then through power supply
Managing chip, power supply is exported after decompression.LCD_BAK pins are backlight control pin, are connected with controller 14.LCD_CTL pins
For lcd power source power supply control pin, it is connected with controller 14,.SDA, SDL, RST, CD and CS0 are liquid-crystal data pin, with control
Device 14 processed connects.P3 is liquid crystal and PCB connecting interfaces.
As shown in figure 8, valve driving circuit 19 includes valve driving chip, electric capacity C7 and electric capacity C9.Driving power be by
Lithium battery through diode-isolated, shunt capacitance is directly powered or shunt capacitance add boosting after be powered.When needing valve event,
High current is exported to valve by discharge capability strong electric capacity, after operation terminates, lithium battery is charged with low current to electric capacity again.
Working power is same as above, and is powered by LDO reduced output voltages.F_SET, F_ON connect controller 14 with F_OFF and controlled
System.
Implementation column 2
Embodiment 2 includes all structures of embodiment 1, and the discharge circuit structure of embodiment 2 is as follows, as shown in Fig. 2 electric discharge
Circuit 16 includes second switch circuit 4 and constant-current source circuit 6, second switch circuit 4 respectively with power supply 9, constant-current source circuit 6 and control
Device 14 processed electrically connects.Second switch circuit 4 includes resistance R4, FET Q2, resistance R7 and triode Q3, constant-current source circuit 6
Including resistance R9, resistance R10, resistance R11 and constant current source chip；FET Q2 drain electrode electrically connects with constant current source chip, electricity
Hinder the one end of R9 one end respectively with resistance R11 and resistance R10 to electrically connect, resistance the R9 other end and constant current source chip are electrically connected
Connect.Resistance R11 other end ground connection, the resistance R10 other end electrically connect with constant current source chip.
The working condition of discharge circuit 16 is controlled by second switch circuit 4.When discharge circuit 16 does not work, Ctr1 pins
Level is set low by drawing.At this moment, triode Q3 is in cut-off state.Now, FET Q2 grid, does not determine state.R4
As pull-up resistor, move Q2 grid to high level, level is changed into determination state.Q2 source electrode ends to drain electrode.Now,
FET Q2 drain electrode is not powered for constant-current source circuit 6, realizes low-power consumption.
When discharge circuit 16 needs work, Ctr1 pins are set to high level.At this moment, triode Q3 is in saturation conduction shape
State, Q3 colelctor electrode are launched pole and move low level to.Meanwhile Q2 grid moves low level, Q3 source electrode to by Q3 colelctor electrode
Turned on to drain electrode.Now, FET Q2 drain electrode is powered for late-class circuit, and constant-current source circuit 6 is started working.
The utility model can be achieved the temperature detection to power supply 9, make lithium battery in not equality of temperature by temperature sensing circuit 1
Under degree, accurate measurement and division can be carried out to dump energy grade.；, can compatible recombination energy with reference to battery isolation circuitry 2
Amount type lithium battery or single-unit energy type lithium battery are as power input；By by discharge circuit 16, with the knot of voltage detecting circuit 17
Close, can support before discharging power supply and in discharge process, voltage is detected, on the one hand realize online work(
Can, on the other hand, it can exclude whether current stage passive state has an impact to the discharge current of power supply 9；By switching electricity
Road, can in functional module, the used time does not disconnect circuit, realize low-power consumption；, can be in electricity not by output control circuit 10
When sufficient, remote prompts or early warning are carried out to measuring instrument state., can be by dump energy dependency number by data storage circuitry 11
Prestored according to data such as contrast table, such as temperature, voltage, prompt messages, to be searched after detecting and contrast operation.
It should be understood that the present embodiment is merely to illustrate the utility model rather than limitation the scope of the utility model.In addition
It should be understood that after the content of the utility model instruction has been read, those skilled in the art can make various to the utility model
Change or modification, these equivalent form of values equally fall within the application appended claims limited range.
Claims (10)
1. a kind of measuring instrument power supply dump energy on-line checking circuit, it is characterized in that, including provide electricity for table end system
The power supply of energy（9）, connection power supply discharge circuit（16）, the voltage detecting circuit that is detected to supply voltage（17）, to electricity
Source carries out the temperature sensing circuit of temperature detection（1）, controller（14）, connection controller data storage circuitry（11）And output
Control circuit（10）；The discharge circuit, temperature sensing circuit and voltage detecting circuit are connected in parallel, the discharge circuit, temperature
Degree detection circuit connects the controller with voltage detecting circuit output end, and the output control circuit includes radio communication device
（13）The first switch circuit with closure is opened with control radio communication device（12）, the controller is according to the voltage detecting
The supply voltage of electric circuit inspection is to control the work of radio communication device.
2. measuring instrument power supply dump energy on-line checking circuit according to claim 1, it is characterized in that, the temperature
Degree detection circuit includes filter capacitor C2, divider resistance R6 and thermistor RM1, thermistor RM1 one end and power electric connection,
The thermistor RM1 other ends are electric with filter capacitor C2, divider resistance R6 and controller electrical connection, filter capacitor C2 and partial pressure respectively
The resistance R6 other ends are grounded.
3. measuring instrument power supply dump energy on-line checking circuit according to claim 1, it is characterized in that, it is described to put
Circuit includes second switch circuit（4）With constant resistance circuit（5）, the second switch circuit respectively with power supply, constant electricity
Resistance circuit and controller electrical connection.
4. measuring instrument power supply dump energy on-line checking circuit according to claim 1, it is characterized in that, it is described to put
Circuit includes second switch circuit（4）And constant-current source circuit（6）, second switch circuit respectively with power supply, constant-current source circuit and
Controller electrically connects.
5. measuring instrument power supply dump energy on-line checking circuit according to claim 4, it is characterized in that, described
Two on-off circuits include pull-up resistor R4, FET Q2, current-limiting resistance R7 and triode Q3, and the constant-current source circuit includes electricity
Hinder R9, resistance R10, load resistance R11 and constant current source chip.
6. measuring instrument power supply dump energy on-line checking circuit according to claim 5, it is characterized in that, described three
Pole pipe Q3 base stage is electrically connected with resistance R7 one end, and the resistance R7 other end is electrically connected with the controller, triode Q3 emitter stage
Ground connection, triode Q3 colelctor electrode electrically connect with resistance R4 one end and FET Q2 grid respectively, and resistance R4's is another
The source electrode and power electric connection with FET Q2, FET Q2 drain electrode electrically connect with constant current source chip respectively at end, resistance
The one end of R9 one end respectively with resistance R11 and resistance R10 electrically connects, and the resistance R9 other end electrically connects with constant current source chip,
Resistance R11 other end ground connection, the resistance R10 other end electrically connect with constant current source chip.
7. measuring instrument power supply dump energy on-line checking circuit according to claim 1, it is characterized in that, the electricity
Pressure detection circuit includes the 3rd on-off circuit（7）And pressure filter circuit（8）, the 3rd on-off circuit respectively with power supply, partial pressure filter
Wave circuit and controller electrical connection, pressure filter circuit are electrically connected with the controller.
8. measuring instrument power supply dump energy on-line checking circuit according to claim 7, it is characterized in that, described
Three on-off circuits include current-limiting resistance R5, pull-up resistor R8, triode Q1 and triode Q4, and the pressure filter circuit includes dividing
Piezoresistance R1, divider resistance R2 and filter capacitor C1.
9. measuring instrument power supply dump energy on-line checking circuit according to claim 8, it is characterized in that, described three
Pole pipe Q4 base stage is electrically connected with R8 one end, and the R8 other ends are electrically connected with the controller, triode Q4 grounded emitter, triode
Q4 colelctor electrode electrically connects with R5 one end, and the R5 other ends electrically connect with triode Q1 base stages, triode Q1 emitter stage and power supply
Electrical connection, triode Q1 colelctor electrode electrically connects with resistance R1 one end, the R1 other ends respectively with resistance R2 one end, electric capacity C1 one end
Electrically connected with controller, the resistance R2 other ends and the electric capacity C1 other ends are grounded.
10. the measuring instrument power supply dump energy according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 exists
Line detection circuit, it is characterized in that, in addition to power-supplying circuit（15）, the power-supplying circuit is including having isolation features
Battery isolation circuitry（2）And electric power management circuit（3）, battery isolation circuitry electrically connects with power supply and electric power management circuit respectively,
Electric power management circuit is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720628968.8U CN206876842U (en) | 2017-06-01 | 2017-06-01 | Measuring instrument power supply dump energy on-line checking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720628968.8U CN206876842U (en) | 2017-06-01 | 2017-06-01 | Measuring instrument power supply dump energy on-line checking circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206876842U true CN206876842U (en) | 2018-01-12 |
Family
ID=61337781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720628968.8U Active CN206876842U (en) | 2017-06-01 | 2017-06-01 | Measuring instrument power supply dump energy on-line checking circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876842U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964534A (en) * | 2018-08-21 | 2018-12-07 | 惠州市蓝微电子有限公司 | A kind of noninductive control circuit of DC brushless motor |
| CN109767610A (en) * | 2018-12-04 | 2019-05-17 | 宁波天鑫仪表有限公司 | A kind of flow meter data remote transmitting device |
| CN111693886A (en) * | 2020-06-03 | 2020-09-22 | 艾特仪表科技（深圳）有限公司 | Power monitoring and control circuit of intelligent metering instrument of Internet of things |
| CN113009358A (en) * | 2019-12-20 | 2021-06-22 | 浙江宇视科技有限公司 | Battery remaining capacity detection device |
-
2017
- 2017-06-01 CN CN201720628968.8U patent/CN206876842U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964534A (en) * | 2018-08-21 | 2018-12-07 | 惠州市蓝微电子有限公司 | A kind of noninductive control circuit of DC brushless motor |
| CN109767610A (en) * | 2018-12-04 | 2019-05-17 | 宁波天鑫仪表有限公司 | A kind of flow meter data remote transmitting device |
| CN113009358A (en) * | 2019-12-20 | 2021-06-22 | 浙江宇视科技有限公司 | Battery remaining capacity detection device |
| CN111693886A (en) * | 2020-06-03 | 2020-09-22 | 艾特仪表科技（深圳）有限公司 | Power monitoring and control circuit of intelligent metering instrument of Internet of things |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206876842U (en) | Measuring instrument power supply dump energy on-line checking circuit | |
| CN206350035U (en) | A kind of Internet of Things measuring instrument and system with remote firmware updating function | |
| CN206876841U (en) | A kind of gas meter, flow meter power supply voltage detecting circuit | |
| CN207457458U (en) | A kind of accumulator wireless inspection device | |
| CN102684269A (en) | Intelligent control system of nano lead-acid storage battery | |
| CN207603241U (en) | Discharging device | |
| CN206788244U (en) | A kind of single-phase intelligent ammeter | |
| CN203455833U (en) | E[2]PROM data programming circuit and device | |
| CN108711930A (en) | A kind of power supply adaptor and battery switch accurate detection device and method | |
| CN211617480U (en) | Mode battery address device with monitoring module | |
| CN206450802U (en) | Lithium battery automatic tester for performance | |
| CN109186685A (en) | A kind of control circuit for pressure controller | |
| CN109444753A (en) | Electric quantity detecting circuit, method and audio frequency apparatus | |
| CN104332668A (en) | Storage battery damage emergency processing device | |
| CN108680864A (en) | A kind of battery discharging test device and method with under-voltage protection | |
| CN210401589U (en) | Detection apparatus for on-off switch life-span | |
| CN103675496A (en) | Environment testing system of electronic equipment | |
| CN104062593A (en) | Battery power detection system | |
| CN208384068U (en) | A kind of Partial discharge signal simulator with temperature measurement function | |
| CN209182478U (en) | A kind of storage battery discharge tester | |
| CN106980102A (en) | The device for monitoring running and method of a kind of electric energy meter field detection device | |
| CN219123308U (en) | Battery management system | |
| CN209542677U (en) | A kind of meter backlight electric power control circuit | |
| CN208384096U (en) | A kind of Partial discharge signal simulator with temperature measuring circuit | |
| CN207588540U (en) | 72V photovoltaic power supplies system and solar telephone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |