CN203759479U - Passive meter reading counting device - Google Patents

Passive meter reading counting device Download PDF

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Publication number
CN203759479U
CN203759479U CN201420152385.9U CN201420152385U CN203759479U CN 203759479 U CN203759479 U CN 203759479U CN 201420152385 U CN201420152385 U CN 201420152385U CN 203759479 U CN203759479 U CN 203759479U
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China
Prior art keywords
triode
circuit
resistance
electrically connected
bus
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Expired - Fee Related
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CN201420152385.9U
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Chinese (zh)
Inventor
刘景福
王传荣
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SHANDONG WEIWEI TECHNOLOGY Co Ltd
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SHANDONG WEIWEI TECHNOLOGY Co Ltd
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Abstract

The utility model relates to a passive meter reading counting device which comprises a single chip microcomputer intermittent work control device, a non-battery electric storage device, a charge power supply, a bus, a switching circuit and a bus device. The non-battery electric storage device is electrically connected with the bus and the single chip microcomputer intermittent work control device and is used for supplying power to the single chip microcomputer intermittent work control device, the switching circuit is electrically connected with the bus, the non-battery electric storage device and the bus device respectively, the bus can be conducted with the bus device or can be conducted with the non-battery electric storage device under the effect of the switching circuit, the charge power supply is electrically connected with the bus and is used for charging the non-battery electric storage device, and the single chip microcomputer intermittent work control device is used for completing counting work. The passive meter reading counting device has the advantages that the problem that a counting device needs to be powered by batteries and a power supply to work for a long time in the prior art can be solved in a breakthrough manner; the non-battery electric storage device of the counting device is small in size, long in service life, stable in work and low in cost.

Description

A kind of passive meter reading counting assembly
Technical field
The utility model relates to a kind of counting assembly, especially, is applicable to counting assembly or the similar control device of the measuring instrument such as water, electricity, gas, hotlist, specifically, relates to a kind of passive meter reading counting assembly, belongs to electronic technology field.
Background technology
The sensing gauge counting apparatus of existing various measuring instruments, generally to adopt single-chip microcomputer to gather the mode of measurement sensory signal, as: as described in Chinese patent 20220531067.4,201110267269.2,201020544489.6, these modes are all to allow the single-chip microcomputer state in energising work for a long time, then gather the pulse or the switching signal that come from sensor, when no matter whether signal come or not,, single-chip microcomputer all will keep the open state of switching on, and has brought thus the problems such as interference, power consumption, machine failure.In order to overcome the above problems, the inventor has designed one and has been used for realizing single-chip microcomputer intermittently used control device, the patent No. is 201320369068.8, described control device adopts single-chip microcomputer intermittently used mode, make except the moment energising work of this counting assembly counting, all the other overwhelming majority times, complete machine power consumption reduced greatly all in off-position, can long-term powered operation with button cell, solve preferably above problem.But this circuit still needs battery component to support its work, still exists the restriction of battery life, battery failures, battery altering.
Utility model content
The technical problems to be solved in the utility model is for above deficiency, a kind of passive meter reading counting assembly is provided, adopt non-battery accumulator part substituting battery, whole counting assembly is normally worked under the situation that there is no battery, because counting assembly adopts single-chip microcomputer discontinuous operation, and circuit power consumption is extremely low, the small electric weight of non-battery accumulator part gets final product supply circuit long-term work, solve counting assembly in prior art breakthroughly and needed for a long time battery, the situation of Power supply work, and the non-battery storage device volume that in the utility model, counting assembly adopts is little, life-span is long, working stability, cost is low.
For solving above technical matters, the utility model is by the following technical solutions: a kind of passive meter reading counting assembly, is characterized in that: described counting assembly comprises the single-chip microcomputer discontinuous operation control device of electrical connection, non-battery accumulator part, charge power supply, bus, commutation circuit and bus device;
The input end of described non-battery accumulator part is electrically connected with bus, and the output terminal of non-battery accumulator part is electrically connected with single-chip microcomputer discontinuous operation control device, and non-battery accumulator part is used to single-chip microcomputer discontinuous operation control device that power supply is provided;
Described commutation circuit is electrically connected with bus, non-battery accumulator part and bus device respectively, and commutation circuit is for realizing the conducting of bus and bus device or the conducting of bus and non-battery accumulator part;
Described charge power supply is electrically connected with bus, and charge power supply is used to non-battery accumulator part charging;
Described single-chip microcomputer discontinuous operation control device has been used for counting work.
A kind of prioritization scheme, described single-chip microcomputer discontinuous operation control device comprises water meter sensitive switch, on-off circuit, shutdown circuit and counting circuit;
Described water meter sensitive switch is electrically connected with on-off circuit, and water meter sensitive switch is for providing the break-make of switching signal with gauge tap circuit;
Described on-off circuit is electrically connected with counting circuit, and on-off circuit is passed to counting circuit for realizing by the switching signal of water meter sensitive switch;
Described counting circuit is electrically connected with shutdown circuit, and counting circuit has been used for counting work and signal has been passed to shutdown circuit completing after counting;
Described shutdown circuit is electrically connected with on-off circuit, and shutdown circuit is closed for gauge tap circuit.
Another kind of prioritization scheme, described non-battery accumulator part comprises super capacitor C2 in parallel and battery BAT, battery BAT is in series with diode D5, the positive pole of super capacitor C2 is electrically connected with charge power supply, the minus earth of super capacitor C2, the minus earth of battery BAT, the anodic bonding of the positive pole of battery BAT and diode D5, the negative electrode of diode D5 is connected with the positive pole of super capacitor C2.
Another prioritization scheme, described on-off circuit is electrically connected with non-battery accumulator part, and the load current of on-off circuit is less than 0.1 μ A.
Further prioritization scheme, described on-off circuit comprises voltage stabilizer U4, triode Q5 and triode Q6, the input end of stabilivolt U4 is connected with the collector of triode Q5, the output termination power of stabilivolt U4, the emitter of triode Q5 is connected with the negative electrode of diode D5, between the base stage of the emitter of triode Q5 and triode Q5, be connected with resistance R 9, between the collector of the base stage of triode Q5 and triode Q6, be connected with resistance R 10, the grounded emitter of triode Q6, the base stage of triode Q6 is through resistance R 13 ground connection, between the collector of the base stage of triode Q6 and triode Q5, be connected with resistance R 12, resistance R 12 is connected with diode D6, between the collector of triode Q6 and water meter sensitive switch, be connected with resistance R 11.
Further prioritization scheme, is electrically connected with charging circuit between described non-battery accumulator part and charge power supply;
Described charging circuit comprises voltage stabilizer U3, capacitor C 1 and diode D4, one end of capacitor C 1 is connected with the input end of stabilivolt U3, the other end ground connection of capacitor C 1, the anodic bonding of the output terminal of stabilivolt U3 and diode D4, the negative electrode of diode D4 is electrically connected with non-battery accumulator part.
Further prioritization scheme, described shutdown circuit comprises triode Q7, the collector of triode Q7 is electrically connected with on-off circuit, the grounded emitter of triode Q7, the base stage of triode Q7 connects counting circuit through resistance R 14, triode Q7 is electrically connected with resistance R 15, and one end of resistance R 15 is connected between the base stage and resistance R 14 of triode Q7, the other end ground connection of resistance R 15.
A kind of prioritization scheme, described commutation circuit comprises bridge rectifier circuit QL, triode Q1, triode Q2, triode Q3, triode Q4, diode D1 and voltage stabilizing diode D2, the anodic bonding of the cathode connection terminal of bridge rectifier circuit QL and diode D1, the negative electrode of diode D1 is connected with the negative electrode of voltage stabilizing diode D2, the anodic bonding of voltage stabilizing diode D2 has resistance R 3, resistance R 3 is through resistance R 4 ground connection, resistance R 4 is connected between the base stage of triode Q1 and the emitter of triode Q1, the collector of triode Q1 is connected with the base stage of triode Q2 through resistance R 5, the anodic bonding of the emitter of triode Q2 and diode D1, between the base stage of the emitter of triode Q2 and triode Q2, be connected with resistance R 6, the collector of triode Q2 is electrically connected with bus device, the emitter of triode Q3 is connected with the emitter of triode Q2, the base stage of triode Q3 is connected with the base stage of triode Q2, the collector of triode Q3 is through resistance R 7 ground connection, the emitter of triode Q4 is connected with the emitter of triode Q3, the base stage of triode Q4 is connected with the collector of triode Q3, the collector of triode Q4 is electrically connected with charging circuit.
Another kind of prioritization scheme, described charge power supply is power supply, external cell, power supply adaptor or the light energy battery of bus self.
The utility model adopts after above technical scheme, compared with prior art, have the following advantages: adopt super capacitor to provide power supply for single-chip microcomputer discontinuous operation control device, super capacitor is connected with charging circuit, charging circuit is used to super capacitor charging, super capacitor is parallel with battery, the demand of battery for ensureing to check meter first, simultaneously, battery is also as standby power supply, once charging circuit breaks down, can prevent loss of data, improve the reliability of counting assembly, super capacitor is connected with on-off circuit, on-off circuit respectively with water meter sensitive switch, shutdown circuit and counting circuit electrical connection, water meter sensitive switch is for the break-make of gauge tap circuit, in the time that water meter sensitive switch is closed, on-off circuit conducting, super capacitor provides power supply for counting circuit, counting circuit completes after counting, signal is passed to shutdown circuit, shutdown circuit is closed for gauge tap circuit, described counting assembly is realized zero power consumption state, and in counting process, the load current of on-off circuit is less than 0.1 μ A, effectively ensure that super capacitor provides the feasibility of power supply for counting circuit, and required super capacitor volume is little, be easy to realize.
Below in conjunction with drawings and Examples, the utility model is elaborated.
Brief description of the drawings
Accompanying drawing 1 is the electrical principle block diagram of counting assembly in the utility model embodiment;
Accompanying drawing 2 is electrical schematic diagrams of counting assembly in the utility model embodiment;
In figure,
1-charge power supply, 2-charging circuit, the non-battery accumulator part of 3-, 4-water meter sensitive switch, 5-on-off circuit, 6-shutdown circuit, 7-counting circuit, 8-bus device, 9-commutation circuit, 10-bus.
Embodiment
Embodiment, as shown in Figure 1, a kind of passive meter reading counting assembly, comprise charge power supply 1, charging circuit 2, non-battery accumulator part 3, water meter sensitive switch 4, on-off circuit 5, shutdown circuit 6, counting circuit 7, bus device 8, commutation circuit 9 and bus 10, charge power supply 1 is electrically connected with commutation circuit 9 by bus 10, commutation circuit 9 is electrically connected with charging circuit 2 and bus device 8 respectively, commutation circuit 9 is for realizing being communicated with of bus 10 and charging circuit 2 or bus device 8, bus device 8 is electrically connected with counting circuit 7, in the time that external host is electrically connected with bus 10, commutation circuit 9 is communicated with bus 10 and bus device 8, in the time that charge power supply 1 is electrically connected with bus 10, commutation circuit 9 is communicated with charging circuit 2 and bus 10, charging circuit 2 is electrically connected with non-battery accumulator part 3, charging circuit 2 is used to non-battery accumulator part 3 to charge, non-battery accumulator part 3 is electrically connected with on-off circuit 5, non-battery accumulator part 3 is used to on-off circuit 5 that power supply is provided, on-off circuit 5 respectively with water meter sensitive switch 4, shutdown circuit 6 and counting circuit 7 are electrically connected, water meter sensitive switch 4 is for turn on-switch circuit 5, in the time that water meter sensitive switch 4 is closed, on-off circuit 5 conductings, non-battery accumulator part 3 provides power supply for counting circuit 7, counting circuit 7 completes after counting, signal is passed to shutdown circuit 6, shutdown circuit 6 is closed for gauge tap circuit 5, the described counting assembly of checking meter is realized zero power consumption state.
As shown in Figure 2, described charge power supply 1 comprises power supply SBAT and diode D3, the anodic bonding of the positive pole of power supply SBAT and diode D3, and the negative electrode of diode D3 connects the positive pole of bus 10, and the negative pole of power supply SBAT connects the negative pole of bus 10.
Described commutation circuit 9 comprises bridge rectifier circuit QL, the anodic bonding end ground connection of bridge rectifier circuit QL, the cathode connection terminal of bridge rectifier circuit QL is electrically connected with bus device 8, in the anode of bridge rectifier circuit QL, cathode connection terminal one is connected to the negative pole of bus 10 through resistance R 1, another in anode, the cathode connection terminal of bridge rectifier circuit QL is connected to the positive pole of bus 10 through resistance R 2.
Between described bridge rectifier circuit QL and bus device 8, be connected with triode Q1, triode Q2, triode Q3, triode Q4, diode D1 and voltage stabilizing diode D2, the anodic bonding of the cathode connection terminal of bridge rectifier circuit QL and diode D1, the negative electrode of diode D1 is connected with the negative electrode of voltage stabilizing diode D2, the anodic bonding of voltage stabilizing diode D2 has resistance R 3, resistance R 3 is through resistance R 4 ground connection, resistance R 4 is connected between the base stage of triode Q1 and the emitter of triode Q1, the collector of triode Q1 is connected with the base stage of triode Q2 through resistance R 5, the anodic bonding of the emitter of triode Q2 and diode D1, between the base stage of the emitter of triode Q2 and triode Q2, be connected with resistance R 6, the collector of triode Q2 is electrically connected with bus device 8, the emitter of triode Q3 is connected with the emitter of triode Q2, the base stage of triode Q3 is connected with the base stage of triode Q2, the collector of triode Q3 is through resistance R 7 ground connection, the emitter of triode Q4 is connected with the emitter of triode Q3, the base stage of triode Q4 is connected with the collector of triode Q3, the collector of triode Q4 is electrically connected with charging circuit 2.
Described bus device 8 comprises transceiver integrated chip U2, the model of transceiver integrated chip U2 is TSS721A, the input end VB of described transceiver integrated chip U2 is connected with the collector of triode Q2, the logic level adjustable side BAT of transceiver integrated chip U2 meets power supply VCC, the modulating current of transceiver integrated chip U2 regulates input end RIS through resistance R 17 ground connection, the sampling capacitance link SC of transceiver integrated chip U2 is through capacitor C 4 ground connection, the earth terminal GND ground connection of transceiver integrated chip U2, the power supply electric capacity incoming end STC of transceiver integrated chip U2 is through capacitor C 5 ground connection, the electric current of transceiver integrated chip U2 regulates input end RIDD through resistance R 18 ground connection, the data input pin RX of the data output end TX of transceiver integrated chip U2 and transceiver integrated chip U2 is electrically connected with counting circuit 7, the output end of pressure-stabilizing VDD of transceiver integrated chip U2 is electrically connected with counting circuit 7 and on-off circuit 5 respectively.
Described charging circuit 2 comprises voltage stabilizer U3, capacitor C 1 and diode D4, the model of stabilivolt U3 is HT7560, one end of capacitor C 1 is connected with the collector of triode Q4 by resistance R 8, the other end ground connection of capacitor C 1, the input end of stabilivolt U3 is connected between capacitor C 1 and resistance R 8, the earth terminal ground connection of stabilivolt U3, the anodic bonding of the output terminal of stabilivolt U3 and diode D4, the negative electrode of diode D4 is electrically connected with non-battery accumulator part 3.
The input end of described non-battery accumulator part 3 is electrically connected with charging circuit 2, the output terminal of non-battery accumulator part 3 is electrically connected with on-off circuit 5, non-battery accumulator part 3 comprises super capacitor C2 in parallel and battery BAT, battery BAT is in series with diode D5, the positive pole of super capacitor C2 is connected with the negative electrode of diode D4, the minus earth of super capacitor C2, the minus earth of battery BAT, the anodic bonding of the positive pole of battery BAT and diode D5, the negative electrode of diode D5 is connected with on-off circuit 5.
Described on-off circuit 5 comprises voltage stabilizer U4, triode Q5 and triode Q6, the model of stabilivolt U4 is HT7530, the input end of stabilivolt U4 is connected with the collector of triode Q5, the earth terminal ground connection of stabilivolt U4, the output terminal of stabilivolt U4 is as the power supply of counting circuit 7, the emitter of triode Q5 is connected with the negative electrode of diode D5, between the base stage of the emitter of triode Q5 and triode Q5, be connected with resistance R 9, between the collector of the base stage of triode Q5 and triode Q6, be connected with resistance R 10, the grounded emitter of triode Q6, the base stage of triode Q6 is through resistance R 13 ground connection, between the collector of the base stage of triode Q6 and triode Q5, be connected with resistance R 12, between the output end of pressure-stabilizing VDD of resistance R 12 and transceiver integrated chip U2, be connected with diode D6.
Described water meter sensitive switch 4 is for gathering switching signal, switching signal water meter sensitive switch 4 closures of every reception once, the present embodiment water meter sensitive switch 4 is dry-reed tube switch K, one end ground connection of dry-reed tube switch K, is connected with resistance R 11 between the other end of dry-reed tube switch K and the collector of triode Q6.
Described shutdown circuit 6 comprises triode Q7, the collector of triode Q7 is connected with the base stage of triode Q6, the grounded emitter of triode Q7, the base stage of triode Q7 connects counting circuit 7 through resistance R 14, triode Q7 is electrically connected with resistance R 15, one end of resistance R 15 is connected between the base stage and resistance R 14 of triode Q7, the other end ground connection of resistance R 15.
Described counting circuit 7 comprises single-chip microcomputer U1 and the triode Q8 of electrical connection, the model of single-chip microcomputer U1 is C8051F300, the serial communication receiving port P05 of single-chip microcomputer U1 is connected with the data output end TX of transceiver integrated chip U2, the serial communication delivery outlet P04 of single-chip microcomputer U1 is connected with the data input pin RX of transceiver integrated chip U2, the positive power source terminal VDD of single-chip microcomputer U1 connects power supply, the earth terminal GND ground connection of single-chip microcomputer U1, between the positive power source terminal VDD of single-chip microcomputer U1 and the earth terminal GND of single-chip microcomputer U1, be connected with capacitor C 3, the reset terminal RSTCK of single-chip microcomputer U1 connects power supply, the delivery outlet P02X1 of single-chip microcomputer U1 connects shutdown circuit 6, be used for exporting off signal, the input port P06 of single-chip microcomputer U1 is electrically connected with triode Q8, be used for identifying current state and be whether the bus state of checking meter, the collector of described triode Q8 is connected with the input port P06 of single-chip microcomputer U1, the grounded emitter of triode Q8, the base stage of triode Q8 is connected with the output end of pressure-stabilizing VDD of transceiver integrated chip U2 through resistance R 19, resistance R 19 is connected with resistance R 20, one end of resistance R 20 is connected between resistance R 19 and the base stage of triode Q8, the other end ground connection of resistance R 20.
Little, easy to use in order to ensure continued power and the volume of super capacitor C2, the power consumption of described on-off circuit 5 must be enough little, and the load current of on-off circuit 5 should meet and is less than 0.1 μ A.
Every use 0.1 side's water, once, by the every water consumption per month of each household, 10 sides calculate water meter sensitive switch 4 closures, every month water meter sensitive switch 4 closed 100 times, as calculated, the power consumption of single-chip microcomputer U1 much smaller than super capacitor C2 from electrical leakage quantity, select low electric leakage super capacitor, can deposit electricity four to five months, so once charging, can ensure to use three months, owing to monthly once checking meter in accordance with regulations, so this scheme can save battery.
But in circuit, still there is a battery BAT, because there is people in the resident family that constructs from water meter, conventionally far exceed three months, furthermore can be once moving in the charging of checking meter yet, so, even if dispatch from the factory, super capacitor C2 is full of, before still can not ensureing to check meter first, super capacitor C2 still has electricity, the demand of battery BAT for ensureing to check meter first, simultaneously, battery BAT, also as standby power supply, once charging circuit 2 breaks down, can prevent loss of data.
Described commutation circuit 9 also can adopt other type of attachment, as long as can realize the selectivity conducting of bus 10 and bus device 8 or bus 10 and non-battery accumulator part 3.
Described super capacitor C2 also can use for the non-battery accumulate components and parts of his type and substitute, the utility model adopts non-battery accumulator part to substitute conventional batteries, in the time that external unit regularly connects bus and copies and accepts data, be its charging by the power supply from bus, charge power supply can be the power supply of bus self, can be also external cell, power supply adaptor or solar cell etc.
The above is giving an example of the utility model preferred forms, and the part of wherein not addressing is in detail those of ordinary skill in the art's common practise.The utility model is according to same principle; also can be adapted to metering and the control instruments such as ammeter, gas meter, flow meter, calorimeter; protection domain of the present utility model is as the criterion with the content of claim; any equivalent transformation carrying out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.

Claims (9)

1. a passive meter reading counting assembly, is characterized in that: described counting assembly comprises single-chip microcomputer discontinuous operation control device, non-battery accumulator part (3), charge power supply (1), bus (10), commutation circuit (9) and the bus device (8) of electrical connection;
The input end of described non-battery accumulator part (3) is electrically connected with bus (10), the output terminal of non-battery accumulator part (3) is electrically connected with single-chip microcomputer discontinuous operation control device, and non-battery accumulator part (3) is used to single-chip microcomputer discontinuous operation control device that power supply is provided;
Described commutation circuit (9) is electrically connected with bus (10), non-battery accumulator part (3) and bus device (8) respectively, and commutation circuit (9) is for realizing bus (10) and the conducting of bus device (8) or the conducting of bus (10) and non-battery accumulator part (3);
Described charge power supply (1) is electrically connected with bus (10), and charge power supply (1) is used to non-battery accumulator part (3) charging;
Described single-chip microcomputer discontinuous operation control device has been used for counting work.
2. a kind of passive meter reading counting assembly as claimed in claim 1, is characterized in that: described single-chip microcomputer discontinuous operation control device comprises water meter sensitive switch (4), on-off circuit (5), shutdown circuit (6) and counting circuit (7);
Described water meter sensitive switch (4) is electrically connected with on-off circuit (5), and water meter sensitive switch (4) is for providing the break-make of switching signal with gauge tap circuit (5);
Described on-off circuit (5) is electrically connected with counting circuit (7), and on-off circuit (5) is passed to counting circuit (7) for realizing by the switching signal of water meter sensitive switch (4);
Described counting circuit (7) is electrically connected with shutdown circuit (6), and counting circuit (7) is for completing counting work and after counting, signal being passed to shutdown circuit (6) completing;
Described shutdown circuit (6) is electrically connected with on-off circuit (5), shutdown circuit (6) closing for gauge tap circuit (5).
3. a kind of passive meter reading counting assembly as claimed in claim 1, it is characterized in that: described non-battery accumulator part (3) comprises super capacitor C2 in parallel and battery BAT, battery BAT is in series with diode D5, the positive pole of super capacitor C2 is electrically connected with charge power supply (1), the minus earth of super capacitor C2, the minus earth of battery BAT, the anodic bonding of the positive pole of battery BAT and diode D5, the negative electrode of diode D5 is connected with the positive pole of super capacitor C2.
4. a kind of passive meter reading counting assembly as claimed in claim 2, is characterized in that: described on-off circuit (5) is electrically connected with non-battery accumulator part (3), and the load current of on-off circuit (5) is less than 0.1 μ A.
5. a kind of passive meter reading counting assembly as claimed in claim 4, it is characterized in that: described on-off circuit (5) comprises voltage stabilizer U4, triode Q5 and triode Q6, the input end of stabilivolt U4 is connected with the collector of triode Q5, the output termination power of stabilivolt U4, the emitter of triode Q5 is connected with the negative electrode of diode D5, between the base stage of the emitter of triode Q5 and triode Q5, be connected with resistance R 9, between the collector of the base stage of triode Q5 and triode Q6, be connected with resistance R 10, the grounded emitter of triode Q6, the base stage of triode Q6 is through resistance R 13 ground connection, between the collector of the base stage of triode Q6 and triode Q5, be connected with resistance R 12, resistance R 12 is connected with diode D6, between the collector of triode Q6 and water meter sensitive switch (4), be connected with resistance R 11.
6. a kind of passive meter reading counting assembly as claimed in claim 5, is characterized in that: between described non-battery accumulator part (3) and charge power supply (1), be electrically connected with charging circuit (2);
Described charging circuit (2) comprises voltage stabilizer U3, capacitor C 1 and diode D4, one end of capacitor C 1 is connected with the input end of stabilivolt U3, the other end ground connection of capacitor C 1, the anodic bonding of the output terminal of stabilivolt U3 and diode D4, the negative electrode of diode D4 is electrically connected with non-battery accumulator part (3).
7. a kind of passive meter reading counting assembly as described in claim 2 or 4 or 5 or 6, it is characterized in that: described shutdown circuit (6) comprises triode Q7, the collector of triode Q7 is electrically connected with on-off circuit (5), the grounded emitter of triode Q7, the base stage of triode Q7 connects counting circuit (7) through resistance R 14, triode Q7 is electrically connected with resistance R 15, and one end of resistance R 15 is connected between the base stage and resistance R 14 of triode Q7, the other end ground connection of resistance R 15.
8. a kind of passive meter reading counting assembly as claimed in claim 6, it is characterized in that: described commutation circuit (9) comprises bridge rectifier circuit QL, triode Q1, triode Q2, triode Q3, triode Q4, diode D1 and voltage stabilizing diode D2, the anodic bonding of the cathode connection terminal of bridge rectifier circuit QL and diode D1, the negative electrode of diode D1 is connected with the negative electrode of voltage stabilizing diode D2, the anodic bonding of voltage stabilizing diode D2 has resistance R 3, resistance R 3 is through resistance R 4 ground connection, resistance R 4 is connected between the base stage of triode Q1 and the emitter of triode Q1, the collector of triode Q1 is connected with the base stage of triode Q2 through resistance R 5, the anodic bonding of the emitter of triode Q2 and diode D1, between the base stage of the emitter of triode Q2 and triode Q2, be connected with resistance R 6, the collector of triode Q2 is electrically connected with bus device (8), the emitter of triode Q3 is connected with the emitter of triode Q2, the base stage of triode Q3 is connected with the base stage of triode Q2, the collector of triode Q3 is through resistance R 7 ground connection, the emitter of triode Q4 is connected with the emitter of triode Q3, the base stage of triode Q4 is connected with the collector of triode Q3, the collector of triode Q4 is electrically connected with charging circuit (2).
9. a kind of passive meter reading counting assembly as claimed in claim 1, is characterized in that: power supply, external cell, power supply adaptor or light energy battery that described charge power supply (1) is bus self.
CN201420152385.9U 2014-04-01 2014-04-01 Passive meter reading counting device Expired - Fee Related CN203759479U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103869738A (en) * 2014-04-01 2014-06-18 山东潍微科技股份有限公司 Passive meter reading and counting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103869738A (en) * 2014-04-01 2014-06-18 山东潍微科技股份有限公司 Passive meter reading and counting device

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