CN107797088B - Chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions - Google Patents
Chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions Download PDFInfo
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- CN107797088B CN107797088B CN201711077984.3A CN201711077984A CN107797088B CN 107797088 B CN107797088 B CN 107797088B CN 201711077984 A CN201711077984 A CN 201711077984A CN 107797088 B CN107797088 B CN 107797088B
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- 238000001914 filtration Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 128
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 25
- 229910052744 lithium Inorganic materials 0.000 claims description 25
- 230000005693 optoelectronics Effects 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 11
- 238000012795 verification Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 230000005672 electromagnetic field Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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Abstract
The invention discloses a chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions, which comprises a chargeable circuit, a pulse indicating circuit and a broadband filtering circuit which are sequentially connected, wherein the infrared receiving circuit is connected with a USB interface when being charged, and the broadband filtering circuit and the infrared circuit are respectively connected with a pulse sampling interface. The invention not only solves the sustainable problem of the battery supply driving sampling circuit, but also solves the problem that no matter the battery supply driving sampling circuit is used for infrared or photoelectric counting sampling, the real-time error sampling data return can be realized, and the device has strong electromagnetic interference resistance.
Description
Technical Field
The invention relates to the technical field of metering test, in particular to a chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions.
Background
Before the number of the electric energy meters is counted, the photoelectric pulse and the infrared counting are mainly adopted. I.e. C imp/kw.h (C is the electric energy meter pulse constant) emits C pulses as one degree of electricity.
With the great promotion of energy conservation and emission reduction in various countries of the world, the European Union has some countries requiring the electric energy meter suppliers to adopt infrared pulse counting, which has two great advantages: firstly, the energy waste can be reduced as much as possible, and secondly, the cost of a power supply link is saved; because the electric energy meter cluster is arranged in a residential area, the adoption of visible light pulse counting can cause a certain influence on the rest of nearby residents at night, and inconvenience is brought to the long-term adoption of the light pulse counting.
The environmental adaptability test of the electric energy meter is carried out by loading a quantitative electromagnetic field in the metering performance checking process of the electric energy meter. The following method is adopted for accurate measurement: firstly, reducing interference of an electromagnetic field to a part of electromagnetic field to a receiving end through a photoelectric isolation technology; secondly, through the design of a filtering structure, the propagation path of the electromagnetic field of the photoelectric trigger end is cut off, the emission of trigger interference signals is prevented, and the filtering performance is improved; finally, because the metering performance of the electric energy meter has long checking time, a sustainable power supply is needed. Specifically, whether the error variation (maximum error value-initial error value) of the measured electric energy meter accords with the relevant basis is measured. In the test, the electric energy meter calibrating device provides parameters such as voltage, current, pulse constant and the like for the measured electric energy meter and is directly connected with the photoelectric receiving device; on the other hand, the photoelectric receiving device receives the light pulse signals sent by the photoelectric triggering device with the infrared receiving function and converts the light pulse signals into TTL electric pulse signals to be supplied to the electric energy meter verification device for error calculation, so that whether the electric energy meter to be tested accords with the relevant standard or verification rules is determined.
In order to solve the problem of electromagnetic interference during sampling, the prior art adopts a light guide medium (such as a light pipe) to transmit the light pulse signals of the electric energy meter, realizes the light transmission, avoids the electromagnetic interference, and has the advantages that: high-strength electromagnetic disturbance can be resisted; but the infrared counting pulse is developed. The improved research of the scheme of the electric energy meter conduction immunity test verification system in the 6 th period of 2015 of Chinese metering is provided: electromagnetic disturbance can be effectively avoided by adopting the all-optical module, but the all-optical module has high cost, is difficult to integrate with the existing equipment, and cannot execute an infrared counting function test; the photoelectric coupling isolation and filtering technology is adopted, so that the electromagnetic interference resistance is very strong, but a sustainable power supply driving power supply cannot be provided, and the metering of the electric energy meter for counting infrared pulses is also unavailable. Therefore, it is needed to design a new photoelectric triggering device suitable for the development requirement of new electric energy metering technology.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions. The invention is applied to electric energy meter metering verification, and solves the problems that the existing photoelectric coupling device applied to electric energy meter metering verification cannot continuously supply power and collect data through infrared pulse counting.
The invention adopts the following technical scheme:
a chargeable photoelectric trigger device integrating broadband filtering and infrared receiving functions comprises a charging circuit 1, a pulse indicating circuit 2, a broadband filtering circuit 3 and an infrared circuit 4 which are sequentially connected, wherein one end of the charging circuit 1 is connected with an external device USB interface.
The charging circuit 1 comprises a TVS tube T1, a first capacitor C1, a lithium battery control chip U1, a rechargeable battery pack B1, a first diode D1, a second diode D2, a first resistor R1, a second resistor R2 and a third resistor R3;
the lithium battery control chip U1 comprises six wiring terminals, which are respectively: VCC interface, STD interface, CHRG interface, BAT interface, PROG interface and GND interface;
the specific connection is as follows:
one end of the TVS tube T1 is connected with an external device USB interface, a first diode D1 positive interface, one end of a first capacitor C1, a positive interface of a second diode D2 and a VCC interface of a lithium battery control chip U1, and the other end of the TVS tube T1 is connected with the external device USB interface, the other end of the first capacitor C1 and a GND interface of the lithium battery control chip U1 respectively;
one end of the first resistor R1 is connected with the negative interface of the first diode D1, and the other end of the first resistor R1 is connected with the CHG interface of the lithium battery control chip U1;
one end of the second resistor R2 is connected with the negative interface of the second diode D2, and the other end of the second resistor R2 is connected with the STD interface of the lithium battery control chip U1;
the positive end of the rechargeable battery pack B1 is connected with a BAT interface of the lithium battery control chip U1; the negative end of the power supply is connected with the ground; one end of the third resistor R3 is connected with the PROG interface of the lithium battery control chip U1, and the other end of the third resistor R is grounded.
The pulse indication circuit comprises a third light emitting diode D3, a second capacitor C2 and a fourth resistor R4, and is specifically connected as follows:
after the second capacitor C2 is connected in parallel with the third light emitting diode D3, the positive terminal thereof is connected with the charging circuit, and the negative terminal thereof is connected in series with one terminal of the fourth resistor R4.
The broadband filter circuit is connected with the infrared circuit through a pulse line interface;
the broadband filter circuit 3 includes a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, and a fifth resistor R5, and the specific connection modes of the first common mode choke coil S1 and the second common mode choke coil S2 are as follows:
the first terminal S11 of the first common mode choke coil S1 is connected to one end of the fifth capacitor C5, one end of the third capacitor C3, and one end of the first inductor L1, respectively;
the second terminal S12 of the first common mode choke coil S1 is connected to one end of the fourth capacitor C4, the other end of the third capacitor, and one end of the second inductor L2, respectively;
the other end of the fourth capacitor C4 and the other end of the fifth capacitor C5 are respectively connected with the ground
The other end of the second inductor L2 is connected with a pulse indication circuit;
the other end of the first inductor L1 is grounded;
the third terminal S13 of the first common mode choke coil S1 is connected to one end of the seventh capacitor C7, one end of the eighth capacitor C8, and the first terminal S21 of the second common mode choke coil, respectively;
the fourth terminal S14 of the first common mode choke coil S1 is connected to one end of the sixth capacitor C6, the other end of the eighth capacitor C8, and the second terminal S22 of the second common mode choke coil S2, respectively;
the other end of the sixth capacitor C6 is grounded to the other end of the seventh capacitor C7;
the third terminal S23 of the second common mode choke coil S2 is connected to one end of the fifth resistor R5, one end of the ninth capacitor C9, and one end of the third inductor L3, respectively;
the fourth terminal S24 of the second common mode choke coil S2 is connected to the other end of the fifth resistor R5, the other end of the ninth capacitor C9, and one end of the fourth inductor L4, respectively;
the other end of the fourth inductor L4 is connected with the negative electrode of the pulse line interface J1;
the other end of the third inductor L3 is connected with the positive electrode of the pulse line interface J1.
The infrared circuit 4 comprises an infrared receiving diode RX, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8, a tenth capacitor C10, an eleventh capacitor C11, a triode Q1 and a dial switch P2;
the specific connection is as follows:
the sixth resistor R6 is connected in parallel with the tenth capacitor C10, one end of the sixth resistor R6 is connected with the negative end of the infrared receiving diode RX and one end of the seventh resistor R7, and the other end of the sixth resistor R7 is grounded;
the base electrode of the triode Q1 is connected with the other end of the seventh resistor R7, and the emitter electrode of the triode Q is connected with a first terminal P21 of the dial switch P2;
the positive end of the infrared receiving diode RX is a battery power supply point; can be connected with the positive end of the rechargeable battery pack B1;
one end of the eighth resistor R8 is connected to the collector of the triode Q1, and the other end thereof is connected to one end of the eleventh capacitor C11 and the second terminal P22 of the dial-up switch P2, respectively;
the other end of the eleventh capacitor C11 is grounded;
the third terminal P23 and the fourth terminal P24 of the dial switch P2 are respectively connected with the negative electrode and the positive electrode of the pulse terminal J1.
The first capacitor C1 and the second capacitor C2 are common-mode capacitors, and the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are current-limiting resistors.
The third capacitor C3, the eighth capacitor C8 and the ninth capacitor C9 are differential mode capacitors, and the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are common mode capacitors.
The triode Q1 is a CMOS tube.
The first and second diodes are light emitting diodes.
The invention has the beneficial effects that:
the photoelectric triggering device is provided with the charging circuit, so that the problem that the pulse driving circuit cannot work continuously is solved; the broadband high-insertion-loss anti-interference filter circuit structure is designed, so that the problem that the broadband electromagnetic field is severely interfered during the radiation immunity test is solved; the infrared receiving function is designed, the problem that the pulse counting of the electric energy meter is whether the light pulse or the infrared sampling counting is adopted is thoroughly solved, and the metering verification technology and the working efficiency of the electric energy meter are improved.
Drawings
FIG. 1 is a block diagram of the invention applied to electric energy meter technology sampling;
FIG. 2 is a schematic circuit diagram of the electro-optic triggering device of FIG. 1;
FIG. 3 is a schematic diagram of the circuit configuration of the infrared receiving function;
FIG. 4 is a graph of common mode insertion loss for a broadband filter circuit;
fig. 5 is a differential mode insertion loss curve of the broadband filter circuit.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1, the counting and sampling structure of the electric energy meter includes: the electric energy meter verification device is connected with the electric energy meter to be tested and then supplies the electric energy meter with required current I b Voltage U i After parameters such as pulse constant C and the like, the electric energy meter to be tested normally works, and sends out normal pulses to the photoelectric triggering device to receive, amplify and convert the normal pulses into photoelectric signals, the photoelectric signals are received and sampled by the photoelectric receiving device and transmitted to the electric energy meter calibrating device to carry out data comparison, so that an error E is output r 。
The utility model provides a chargeable formula photoelectricity trigger device of collection wide band filter and infrared receiving function, includes charging circuit 1, pulse indication circuit 2, wide band filter circuit 3 and the infrared circuit 4 that connect gradually, charging circuit 1 one end is connected with external equipment USB interface, wide band filter circuit passes through pulse line interface connection with the infrared circuit, and external equipment USB interface has VBUS and GND mouth.
As shown in fig. 2 and 3, the specific connections are as follows:
the charging circuit 1 comprises a TVS tube T1, a first capacitor C1, a lithium battery control chip U1, a rechargeable battery pack B1, a first diode D1, a second diode D2, a first resistor R1, a second resistor R2 and a third resistor R3;
the lithium battery control chip U1 comprises six wiring terminals, which are respectively: VCC interface, STD interface, CHRG interface, BAT interface, PROG interface and GND interface;
the specific connection is as follows:
one end of the TVS tube T1 is connected with a VBUS of an external device USB interface, a positive interface of the first diode D1, one end of the first capacitor C1, a positive interface of the second diode D2 and a VCC interface of the lithium battery control chip U1, and the other end of the TVS tube T1 is respectively connected with a GND end of the external device USB interface, the other end of the first capacitor C1 and a GND interface of the lithium battery control chip U1;
one end of the first resistor R1 is connected with the negative interface of the first diode D1, and the other end of the first resistor R1 is connected with the CHG interface of the lithium battery control chip U1;
one end of the second resistor R2 is connected with the negative interface of the second diode D2, and the other end of the second resistor R2 is connected with the STD interface of the lithium battery control chip U1;
the positive end of the rechargeable battery pack B1 is connected with a BAT interface of the lithium battery control chip U1; the negative end of the power supply is connected with the ground; one end of the third resistor R3 is connected with the PROG interface of the lithium battery control chip U1, and the other end of the third resistor R is grounded.
Voltage V i After passing through the external equipment USB, after overvoltage protection through the TVS tube T1, a part of alternating-current noise signals are absorbed through the first capacitor C1, and after passing through the lithium battery charging control chip U1, the rechargeable battery pack B1 is charged. During charging, the second light emitting diode D2 is bright green; after full charge, the first light emitting diode D1 is red, and the first light emitting diode D1 is turned off; the first resistor R1 and the second resistor R2 respectively have a current limiting function and control the luminous intensity of the light emitting diodes D1 and D2; the third resistor R3 plays a role in limiting current of the rechargeable battery pack.
The pulse indication circuit 2 comprises a switch P1, a third LED D3, a second capacitor C2 and a fourth resistor R4,
after one end of the second capacitor C2 is connected with the positive end of the third light emitting diode D3 and the switch P1, the other end of the second capacitor is respectively connected with the ground end, and the other end of the switch P1 is connected with the positive end of the rechargeable battery pack B1; the negative end of the third light-emitting diode D3 is connected with one end of a fourth resistor R4;
after the switch P1 is closed, the battery drives the third light emitting diode D3 and the fourth resistor R4, and the common mode electromagnetic noise along the line is attenuated to a certain extent by the second capacitor C2.
The broadband filter circuit comprises four inductors, seven capacitors, two common mode choke coils and a fifth resistor R5;
the four inductors comprise a first inductor L1, a second inductor L2, a third inductor L3 and a fourth inductor L4;
the seven capacitors are specifically a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9 and a fifth resistor R5;
the two common mode choke coils are specifically a first common mode choke coil S1 and a second common mode choke coil S2;
the first terminal S11 of the first common mode choke coil S1 is connected to one end of the fifth capacitor C5, one end of the third capacitor C3, and one end of the first inductor L1, respectively;
the second terminal S12 of the first common mode choke coil S1 is connected to one end of the fourth capacitor C4, the other end of the third capacitor, and one end of the second inductor L2, respectively;
the other end of the fourth capacitor C4 and the other end of the fifth capacitor C5 are respectively connected with the ground
The other ends of the first inductor L1 and the second inductor L2 are respectively connected with a pulse indication circuit;
the third terminal S13 of the first common mode choke coil S1 is connected to one end of the seventh capacitor C7, one end of the eighth capacitor C8, and the first terminal S21 of the second common mode choke coil, respectively;
the fourth terminal S14 of the first common mode choke coil S1 is connected to one end of the sixth capacitor C6, the other end of the eighth capacitor C8, and the second terminal S22 of the second common mode choke coil S2, respectively;
the other end of the sixth capacitor C6 is grounded to the other end of the seventh capacitor C7;
the third terminal S23 of the second common mode choke coil S2 is connected to one end of the fifth resistor R5, one end of the ninth capacitor C9, and one end of the third inductor L3, respectively;
the fourth terminal S24 of the second common mode choke coil S2 is connected to the other end of the fifth resistor R5, the other end of the ninth capacitor C9, and one end of the fourth inductor L4, respectively;
the other end of the fourth inductor L4 is connected with the negative electrode of the pulse line interface J1;
the other end of the third inductor L3 is connected with the positive electrode of the pulse line interface J1.
The other end of the first inductor L1 is grounded, and the other end of the second inductor L2 is connected with the other end of the fourth resistor R4.
The common mode noise signal is firstly attenuated once through the third and fourth capacitors C3 and C4 and the common mode choke coil S1, and then attenuated twice through the sixth and seventh capacitors C6 and C7 and the common mode choke coil S2; the differential mode noise is attenuated three times by the fifth, eighth and ninth capacitors C5, C8 and C9 in sequence; thereby achieving the function of attenuating noise sources.
The infrared circuit 4 comprises an infrared receiving diode RX, three resistors, two capacitors, a triode Q1 and a dial switch P2;
the three resistors are specifically a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8;
the two capacitors are specifically a tenth capacitor C10 and an eleventh capacitor C11;
after the sixth resistor R6 is connected in parallel with the tenth capacitor C10, one end of the sixth resistor R6 is connected with the negative end of the infrared receiving diode RX and one end of the seventh resistor R7, and the other end of the sixth resistor R is grounded;
the positive battery anode of the infrared receiving diode RX is a battery power supply point BAT and can be connected with the positive end of the rechargeable battery pack B1;
the base electrode of the triode Q1 is connected with the other end of the seventh resistor R7, and the emitter electrode of the triode Q is connected with a first terminal P21 of the dial switch P2;
one end of the eighth resistor R8 is connected to the collector of the triode Q1, and the other end thereof is connected to one end of the eleventh capacitor C11 and the second terminal P22 of the dial-up head P2, respectively;
the other end of the eleventh capacitor C11 is grounded;
the third terminal P23 and the fourth terminal P24 of the dial switch P2 are respectively connected with the negative electrode and the positive electrode of the pulse terminal J1.
The infrared signal passes through a diode RX to output a mixed current I i Filtering, current limiting and amplifying output sampling by a triode Q1, wherein:
the tenth capacitor and the eleventh capacitor have the bypass capacitor function and have the high-frequency electromagnetic noise filtering function on the mixed current signal;
the sixth, seventh and eighth resistors limit the current of the mixed current signal.
The chargeable photoelectric trigger device with the broadband filtering and infrared receiving function has the characteristics of receiving an infrared counting function, being capable of continuously working, resisting strong electromagnetic noise and the like, can effectively filter broadband and high-strength common-mode and differential-mode electromagnetic noise, and ensures that real-time signals of infrared and photoelectric sampling are counted smoothly.
As shown in FIG. 4 and FIG. 5, the present invention has the filtering effect of broadband high insertion loss.
The embodiments described above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the embodiments described above, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the present invention should be made in the equivalent manner, and are included in the scope of the present invention.
Claims (8)
1. The chargeable photoelectric triggering device integrating broadband filtering and infrared receiving functions is characterized by comprising a charging circuit (1), a pulse indicating circuit (2), a broadband filtering circuit (3) and an infrared circuit (4) which are sequentially connected, wherein one end of the charging circuit (1) is connected with a USB interface of external equipment, and the broadband filtering circuit is connected with the infrared circuit through a pulse line interface;
the broadband filter circuit (3) comprises a first inductor (L1), a second inductor (L2), a third inductor (L3), a fourth inductor (L4), a third capacitor (C3), a fourth capacitor (C4), a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), an eighth capacitor (C8), a ninth capacitor (C9) and a fifth resistor (R5), wherein the first common mode choke coil (S1) and the second common mode choke coil (S2) are connected in the following manner:
a first wiring end (S11) of the first common mode choke coil (S1) is respectively connected with one end of a fifth capacitor (C5), one end of a third capacitor (C3) and one end of a first inductor (L1);
a second wiring terminal (S12) of the first common mode choke coil (S1) is respectively connected with one end of a fourth capacitor (C4), the other end of the third capacitor and one end of a second inductor (L2);
the other end of the fourth capacitor (C4) and the other end of the fifth capacitor (C5) are respectively connected with the ground;
the other end of the second inductor (L2) is connected with a pulse indication circuit;
the other end of the first inductor (L1) is grounded;
a third wiring terminal (S13) of the first common mode choke coil (S1) is respectively connected with one end of a seventh capacitor (C7), one end of an eighth capacitor (C8) and a first wiring terminal (S21) of the second common mode choke coil;
a fourth wiring terminal (S14) of the first common mode choke coil (S1) is respectively connected with one end of a sixth capacitor (C6), the other end of an eighth capacitor (C8) and a second wiring terminal (S22) of the second common mode choke coil (S2);
the other end of the sixth capacitor (C6) is grounded to the other end of the seventh capacitor (C7);
a third wiring terminal (S23) of the second common mode choke coil (S2) is respectively connected with one end of a fifth resistor (R5), one end of a ninth capacitor (C9) and one end of a third inductor (L3);
a fourth wiring terminal (S24) of the second common mode choke coil (S2) is respectively connected with the other end of the fifth resistor (R5), the other end of the ninth capacitor (C9) and one end of the fourth inductor (L4);
the other end of the fourth inductor (L4) is connected with the negative electrode of the pulse line interface (J1);
the other end of the third inductor (L3) is connected with the positive electrode of the pulse line interface (J1);
the infrared circuit (4) comprises an infrared receiving diode (RX), a sixth resistor (R6), a seventh resistor (R7) and an eighth resistor (R8), a tenth capacitor (C10), an eleventh capacitor (C11), a triode (Q1) and a dial switch (P2);
the specific connection is as follows:
the sixth resistor (R6) is connected with the tenth capacitor (C10) in parallel, one end of the sixth resistor is connected with the negative end of the infrared receiving diode (RX) and one end of the seventh resistor (R7), and the other end of the sixth resistor is grounded;
the base electrode of the triode (Q1) is connected with the other end of the seventh resistor (R7), and the emitter electrode of the triode is connected with a first terminal (P21) of the dial switch (P2);
the positive end of the infrared receiving diode (RX) is a battery power supply point;
one end of the eighth resistor (R8) is connected with the collector electrode of the triode (Q1), and the other end of the eighth resistor is respectively connected with one end of the eleventh capacitor (C11) and the second terminal (P22) of the dial-up head (P2);
the other end of the eleventh capacitor (C11) is grounded;
the third terminal (P23) and the fourth terminal (P24) of the dial switch (P2) are respectively connected with the negative electrode and the positive electrode of the pulse terminal (J1).
2. The rechargeable photoelectric triggering device according to claim 1, wherein the charging circuit (1) comprises a TVS tube (T1), a first capacitor (C1), a lithium battery control chip (U1), a rechargeable battery pack (B1), a first diode (D1), a second diode (D2), a first resistor (R1), a second resistor (R2) and a third resistor (R3);
the lithium battery control chip (U1) comprises six wiring terminals, which are respectively: VCC interface, STD interface, CHRG interface, BAT interface, PROG interface and GND interface;
the specific connection is as follows:
one end of the TVS tube (T1) is connected with an external device USB interface, a first diode (D1) positive interface, one end of a first capacitor (C1), a positive interface of a second diode (D2) and a VCC interface of a lithium battery control chip (U1), and the other end of the TVS tube is respectively connected with the external device USB interface, the other end of the first capacitor (C1) and a GND interface of the lithium battery control chip (U1);
one end of the first resistor (R1) is connected with the negative interface of the first diode (D1), and the other end of the first resistor is connected with the CHG interface of the lithium battery control chip (U1);
one end of the second resistor (R2) is connected with the negative interface of the second diode (D2), and the other end of the second resistor is connected with the STD interface of the lithium battery control chip (U1);
the positive end of the rechargeable battery pack (B1) is connected with a BAT interface of the lithium battery control chip (U1); the negative end of the power supply is connected with the ground; one end of the third resistor (R3) is connected with the PROG interface of the lithium battery control chip (U1), and the other end of the third resistor is grounded.
3. The device according to claim 2, wherein the pulse indication circuit comprises a third light emitting diode (D3), a second capacitor (C2) and a fourth resistor (R4), and is specifically connected as follows:
after the second capacitor (C2) is connected with the third light emitting diode (D3) in parallel, the positive end of the second capacitor is connected with the charging circuit, and the negative end of the second capacitor is connected with one end of the fourth resistor (R4) in series.
4. A rechargeable photoelectric triggering device according to claim 3, wherein the first capacitor (C1) and the second capacitor (C2) are common mode capacitors, and the first resistor (R1), the second resistor (R2), the third resistor (R3) and the fourth resistor (R4) are current limiting resistors.
5. The device according to claim 1, wherein the third (C3), eighth (C8) and ninth (C9) capacitors are differential mode capacitors and the fourth (C4), fifth (C5), sixth (C6) and seventh (C7) capacitors are common mode capacitors.
6. The rechargeable optoelectronic triggering device according to claim 1, characterized in that the transistor (Q1) is a CMOS transistor.
7. The device of claim 2, wherein the first and second diodes are light emitting diodes.
8. A rechargeable photoelectric triggering device according to claim 3, further comprising a switch (P1), wherein the second capacitor (C2) is connected in parallel with the third light emitting diode (D3), and the positive terminal thereof is connected to the charging circuit through the switch (P1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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