CN109461573B - Current transformer based on wireless transmission technology - Google Patents
Current transformer based on wireless transmission technology Download PDFInfo
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- CN109461573B CN109461573B CN201811542564.2A CN201811542564A CN109461573B CN 109461573 B CN109461573 B CN 109461573B CN 201811542564 A CN201811542564 A CN 201811542564A CN 109461573 B CN109461573 B CN 109461573B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims description 17
- 238000004804 winding Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 42
- 230000000087 stabilizing effect Effects 0.000 claims description 36
- 230000006698 induction Effects 0.000 claims description 29
- 239000004576 sand Substances 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a current transformer based on wireless transmission technique, including the main part and with main part swing joint's upper cover part, the main part includes the casing, be located the DC power supply of casing, be located the circuit board of DC power supply top, be located the winding support of circuit board top and set up the first winding coil on the winding support, the top of casing is provided with first arc wall along length direction, the upper cover part includes shell and second winding coil, upper cover part corresponds first arc wall and is provided with sunken second arc wall, be provided with function integrated circuit on the circuit board, charging circuit and wireless transceiver module, DC power supply all is connected with function integrated circuit and charging circuit, wireless transceiver module is connected with function integrated circuit. Thus, various functional circuits are integrated, and the wireless power supply has a wireless transmission function and a better dustproof and waterproof function.
Description
Technical Field
The invention relates to the technical field of power detection, in particular to a current transformer based on a wireless transmission technology.
Background
The current transformer equipment secondary winding's induction current need adopt wired mode to connect the ampere meter and measure, report the management server to the current value that measures through the concentrator again, and on-the-spot installation circuit overall arrangement is complicated, when design dustproof and waterproof mechanism under outdoor condition, also is difficult to guarantee the dustproof and waterproof of cable and mutual-inductor junction.
Disclosure of Invention
In view of the above, the present invention provides a current transformer based on wireless transmission technology, which integrates various functional circuits, has wireless transmission function and has better dustproof and waterproof functions, so as to solve the above problems.
The utility model provides a current transformer based on wireless transmission technique, including main part (10) and upper cover part (20) with main part (10) swing joint, main part (10) include the casing, be located direct current power supply (30) of casing, be located circuit board (40) of direct current power supply (30) top, be located winding support (50) of circuit board (40) top and set up first winding coil (60) on winding support (50), the top of casing is provided with first arc wall (124) along length direction, upper cover part (20) include shell (201) and set up second winding coil (70) in shell (201), upper cover part (20) are provided with sunken second arc wall (23) towards the terminal surface of main part (10) corresponding first arc wall (124), be provided with function integrated circuit (41) on circuit board (40), charging circuit (42) and wireless transceiver module (43), direct current power supply (30) are all connected with function integrated circuit (41) and charging circuit (42), wireless transceiver module (43) are connected with function integrated circuit (41) and are for charging circuit (30), function (41) are used for charging power supply (30).
Further, the direct current power supply (30) is a lithium battery.
Further, the casing is including bottom casing (11) and top casing (12) of relative setting, the first side of top casing (12) and keep away from the position of bottom casing (11) and be provided with two relative connecting blocks (121), be connected with pivot (122) between two connecting blocks (121), the second side of top casing (12) and keep away from the position of bottom casing (11) and protrude and be provided with sand grip (123), the bottom of the first side of shell (201) is equipped with two couple (21), the bottom of couple (21) and pivot (122) rotation connection of top casing (12), the bottom of the second side of shell (201) is connected with U-shaped joint spare (22), form opening (221) between U-shaped joint spare (22) and the shell (201), sand grip (123) movably are located in opening (221).
Further, the first winding coil (60) and the second winding coil (70) are both U-shaped or C-shaped.
Further, a coil accommodating groove (24) is formed in the shell (201), a plurality of protruding ribs (25) are arranged on the inner side wall of the coil accommodating groove (24), and the second winding coil (70) is located in the coil accommodating groove (24) and in interference fit with the ribs (25).
Further, the first winding coil (60) is provided with a first induction coil (61) and a second induction coil (62), both ends of the first induction coil (61) are connected with the functional integrated circuit (41), and both ends of the second induction coil (62) are connected with the charging circuit (42).
Further, the functional integrated circuit (41) comprises four rectifying diodes D1-D4, inductors CZ1-CZ2, capacitors C1-C4, resistors R1-R3 and a main control chip U1, and a first end of the first induction coil (61) is connected with an anode of the rectifying diode D1 and a cathode of the rectifying diode D3; the second end of the first induction coil (61) is connected with the cathode of the rectifying diode D4 and the anode of the rectifying diode D2, the cathode of the rectifying diode D1 is connected with the cathode of the rectifying diode D2, the anode of the rectifying diode D3 is connected with the anode of the rectifying diode D4, the cathode of the rectifying diode D1 is connected with the first end of the capacitor C1 through the inductor CZ1, the anode of the rectifying diode D4 is connected with the second end of the capacitor C1 through the inductor CZ2, the first end of the capacitor C1 is connected with the first input end of the master control chip U1 through the resistor R1, the second end of the capacitor C1 is connected with the second input end of the master control chip U1 through the resistor R3, the resistor R2 is connected between the first end and the second end of the capacitor C1, the capacitor C4 is connected between the first input end and the second input end of the master control chip U1, the first input end of the master control chip U1 is grounded through the capacitor C2, and the second input end of the master control chip U1 is grounded through the capacitor C3.
Further, the charging circuit (42) comprises four rectifying diodes D5-D8, a thermistor RT, a voltage stabilizing diode D9, a capacitor C5-C10, diodes D10-D12, resistors R4-R6, an inductor L1 and a voltage stabilizing chip U2, and a first end of the second induction coil (62) is connected with an anode of the rectifying diode D5 and a cathode of the rectifying diode D7; a second end of the second induction coil (62) is connected with the cathode of the rectifying diode D8 and is connected with the anode of the rectifying diode D6; the cathode of the rectifying diode D5 is connected with the cathode of the rectifying diode D6, and the anode of the rectifying diode D8 is connected with the anode of the rectifying diode D7; the cathode of the rectifier diode D5 is connected with the first pin of the voltage stabilizing chip U2 through the thermistor RT, and the anode of the rectifier diode D8 is connected with the third pin and the fifth pin of the voltage stabilizing chip U2; the voltage stabilizing diode D9, the capacitor C5, the capacitor C6 and the capacitor C7 are arranged in parallel between the first pin and the third pin of the voltage stabilizing chip U2; the anode of the diode D10 is connected with the second pin of the voltage stabilizing chip U2, and the cathode is connected with the first pin of the voltage stabilizing chip U2; the anode of the diode D11 is connected with the third pin of the voltage stabilizing chip U2, and the cathode is connected with the second pin of the voltage stabilizing chip U2; the second pin of the voltage stabilizing chip U2 is connected with the anode of a diode D12 through an inductor L1, and the cathode of the diode D12 is connected with the anode of a direct current power supply (30); the anode of the diode D12 is connected with the cathode of the direct current power supply (30) through resistors R4 and R6, the fourth pin of the voltage stabilizing chip U2 is connected with a node between the resistor R4 and the resistor R6, and the anode of the diode D12 is connected with the fourth pin of the voltage stabilizing chip U2 through a resistor R5; the capacitors C8-C10 are arranged in parallel between the anode of the diode D12 and the cathode of the direct current power supply (30).
Compared with the prior art, the current transformer based on the wireless transmission technology comprises a main body part (10) and an upper cover part (20) movably connected with the main body part (10), wherein the main body part (10) comprises a shell, a direct current power supply (30) arranged in the shell, a circuit board (40) arranged above the direct current power supply (30), a winding bracket (50) arranged above the circuit board (40) and a first winding coil (60) arranged on the winding bracket (50), a first arc-shaped groove (124) is formed in the top end of the shell along the length direction, the upper cover part (20) comprises a shell (201) and a second winding coil (70) arranged in the shell (201), a concave second arc-shaped groove (23) is formed in the end face, facing the main body part (10), of the upper cover part corresponding to the first arc-shaped groove (124), of the circuit board (40) is provided with a functional integrated circuit (41), a charging circuit (42) and a wireless transceiver module (43), the direct current power supply (30) is connected with the functional integrated circuit (41) and the charging circuit (42), and the wireless transceiver module (43) is connected with the functional integrated circuit (41) to the charging integrated circuit (30), and is used for supplying power to the direct current power to the charging integrated circuit (41). Thus, various functional circuits are integrated, and the wireless power supply has a wireless transmission function and a better dustproof and waterproof function.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic perspective view of a current transformer based on a wireless transmission technology provided by the invention.
Fig. 2 is a schematic diagram of another view angle of the current transformer based on the wireless transmission technology according to the present invention.
Fig. 3 is a split schematic diagram of a current transformer based on a wireless transmission technology provided by the invention.
Fig. 4 is a schematic diagram of another view angle of the split current transformer based on the wireless transmission technology according to the present invention.
Fig. 5 is an internal schematic view of the body portion of fig. 4 with the housing removed.
Fig. 6 is a perspective view of the upper cover part of fig. 4.
Fig. 7 is a perspective view of the housing of the upper cover portion of fig. 6.
Fig. 8 is a schematic block diagram of a current transformer based on a wireless transmission technology according to the present invention.
Fig. 9 is a circuit schematic of the functional integrated circuit of fig. 8.
Fig. 10 is a circuit schematic diagram of the charging circuit in fig. 8.
Detailed Description
Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of the embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1 to 6, the current transformer based on the wireless transmission technology provided by the present invention includes a main body portion 10 and an upper cover portion 20 movably connected with the main body portion 10.
The main body portion 10 includes a housing, a dc power supply 30 located within the housing, a circuit board 40 located above the dc power supply 30, a winding bracket 50 located above the circuit board 40, and a first winding coil 60 disposed on the winding bracket 50. The dc power supply 30 is a lithium battery.
The casing includes bottom casing 11 and the top casing 12 of relative setting, and the first side of top casing 12 just keeps away from the position of bottom casing 11 and is provided with two relative connecting blocks 121, is connected with pivot 122 between two connecting blocks 121, and the second side of top casing 12 just keeps away from the position of bottom casing 11 and protrudes and be provided with sand grip 123. The top end of the top case 12 remote from the bottom case 11 is provided with a first arc-shaped groove 124 in the length direction.
The upper cover portion 20 includes a housing 201 and a second winding coil 70 disposed within the housing 201.
The bottom of the first side of shell 201 is equipped with two couples 21, couple 21 and the pivot 122 rotation connection of top casing 12, and the bottom of the second side of shell 201 is connected with U-shaped joint spare 22, forms opening 221 between U-shaped joint spare 22 and the shell 201, and U-shaped joint spare 22 movably cooperates with the sand grip 123 of top casing 12 for sand grip 123 is located opening 221, thereby realizes the fixed connection between shell 201 and the top casing 12.
The end surface of the upper cover portion 20 facing the main body portion 10 is provided with a concave second arc groove 23 corresponding to the first arc groove 124. A cable accommodation space is formed between the first arc-shaped groove 124 and the second arc-shaped groove 23 for the cable 100 to pass through.
The first winding coil 60 and the second winding coil 70 are both U-shaped or C-shaped.
Referring to fig. 7, a coil accommodating groove 24 is formed in the housing 201, a plurality of protruding ribs 25 are formed on an inner sidewall of the coil accommodating groove 24, and the second winding coil 70 is located in the coil accommodating groove 24 and is in abutting and interference fit with the ribs 25.
Referring to fig. 8, a functional integrated circuit 41, a charging circuit 42 and a wireless transceiver module 43 are disposed on a circuit board 40.
The dc power supply 30 is connected to both the functional integrated circuit 41 and the charging circuit 42, and the wireless transceiver module 43 is connected to the functional integrated circuit 41. The dc power supply 30 supplies power to the functional integrated circuit 41, and the charging circuit 42 is used for charging the dc power supply 30, and the functional integrated circuit 41 is used for receiving the sensing signal of the detection cable 100, rectifying the sensing signal, protecting the sensing signal from overvoltage, filtering the sensing signal at high frequency, stabilizing the voltage, converting the analog signal into the digital signal (a-D), and the like. The wireless transceiver module 43 is configured to transmit signals processed by the functional integrated circuit 41 through wireless transmission. The external wireless concentrator collects the signals sent by the wireless transceiver module 43.
The first winding coil 60 has a first induction coil 61 and a second induction coil 62, both ends of the first induction coil 61 are connected to the functional integrated circuit 41, and both ends of the second induction coil 62 are connected to the charging circuit 42.
The second winding coil 70 has a third induction coil 71 and a fourth induction coil 72, and the third induction coil 71 and the fourth induction coil 72 are connected to an external device.
Referring to FIG. 9, the functional integrated circuit 41 includes four rectifying diodes D1-D4, inductors CZ1-CZ2, capacitors C1-C4, resistors R1-R3 and a main control chip U1.
A first end of the first induction coil 61 is connected to an anode of the rectifying diode D1 and to a cathode of the rectifying diode D3; the second end of the first induction coil 61 is connected to the cathode of the rectifying diode D4 and to the anode of the rectifying diode D2, the cathode of the rectifying diode D1 is connected to the cathode of the rectifying diode D2, and the anode of the rectifying diode D3 is connected to the anode of the rectifying diode D4.
The cathode of the rectifier diode D1 is connected with the first end of the capacitor C1 through the inductor CZ1, and the anode of the rectifier diode D4 is connected with the second end of the capacitor C1 through the inductor CZ 2.
The first end of the capacitor C1 is connected with the first input end of the main control chip U1 through a resistor R1, and the second end of the capacitor C1 is connected with the second input end of the main control chip U1 through a resistor R3.
The resistor R2 is connected between the first terminal and the second terminal of the capacitor C1.
The capacitor C4 is connected between the first input end and the second input end of the main control chip U1, the first input end of the main control chip U1 is grounded through the capacitor C2, and the second input end of the main control chip U1 is grounded through the capacitor C3.
The main control chip U1 is MSP430 series single chip microcomputer produced by Texas instruments in the United states.
Referring to fig. 10, the charging circuit 42 includes four rectifying diodes D5-D8, a thermistor RT, a zener diode D9, a capacitor C5-C10, diodes D10-D12, resistors R4-R6, an inductor L1, and a zener chip U2, which are model LM2596-ADJ, and can output a stable dc voltage.
The first end of the second induction coil 62 is connected with the anode of the rectifying diode D5 and with the cathode of the rectifying diode D7; the second end of the second induction coil 62 is connected to the cathode of the rectifying diode D8 and to the anode of the rectifying diode D6, the cathode of the rectifying diode D5 is connected to the cathode of the rectifying diode D6, and the anode of the rectifying diode D8 is connected to the anode of the rectifying diode D7.
The cathode of the rectifier diode D5 is connected with the first pin of the voltage stabilizing chip U2 through the thermistor RT, and the anode of the rectifier diode D8 is connected with the third pin and the fifth pin of the voltage stabilizing chip U2.
The zener diode D9, the capacitor C5, the capacitor C6, and the capacitor C7 are disposed in parallel between the first leg and the third leg of the zener chip U2.
The anode of the diode D10 is connected to the second pin of the voltage stabilizing chip U2, and the cathode is connected to the first pin of the voltage stabilizing chip U2.
The anode of the diode D11 is connected with the third pin of the voltage stabilizing chip U2, and the cathode is connected with the second pin of the voltage stabilizing chip U2.
The second pin of the voltage stabilizing chip U2 is connected with the anode of the diode D12 through the inductor L1, and the cathode of the diode D12 is connected with the anode of the direct current power supply 30.
The anode of the diode D12 is connected to the negative electrode of the dc power supply 30 via resistors R4 and R6. The fourth pin of the voltage stabilizing chip U2 is connected with a node between the resistor R4 and the resistor R6, and the anode of the diode D12 is also connected with the fourth pin of the voltage stabilizing chip U2 through the resistor R5.
The capacitors C8-C10 are arranged in parallel between the anode of the diode D12 and the cathode of the DC power supply 30.
The wireless transceiver module 43 is a Zigbee module.
Compared with the prior art, the current transformer based on the wireless transmission technology comprises a main body part 10 and an upper cover part 20 movably connected with the main body part 10, wherein the main body part 10 comprises a shell, a direct current power supply 30 positioned in the shell, a circuit board 40 positioned above the direct current power supply 30, a winding bracket 50 positioned above the circuit board 40 and a first winding coil 60 arranged on the winding bracket 50, a first arc-shaped groove 124 is arranged at the top end of the shell along the length direction, the upper cover part 20 comprises a shell 201 and a second winding coil 70 arranged in the shell 201, a concave second arc-shaped groove 23 is arranged on the end face, facing the main body part 10, of the upper cover part 20 corresponding to the first arc-shaped groove 124, a functional integrated circuit 41, a charging circuit 42 and a wireless transceiver module 43 are arranged on the circuit board 40, the direct current power supply 30 is connected with the functional integrated circuit 41 and the charging circuit 42, the wireless transceiver module 43 is connected with the functional integrated circuit 41, the direct current power supply 30 supplies power to the functional integrated circuit 41, and the charging circuit 42 is used for charging the direct current power supply 30. Thus, various functional circuits are integrated, and the wireless power supply has a wireless transmission function and a better dustproof and waterproof function.
The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a current transformer based on wireless transmission technique which characterized in that: the direct-current charging device comprises a main body part (10) and an upper cover part (20) movably connected with the main body part (10), wherein the main body part (10) comprises a shell, a direct-current power supply (30) positioned in the shell, a circuit board (40) positioned above the direct-current power supply (30), a winding bracket (50) positioned above the circuit board (40) and a first winding coil (60) arranged on the winding bracket (50), a first arc-shaped groove (124) is formed in the top end of the shell along the length direction, the upper cover part (20) comprises a shell (201) and a second winding coil (70) arranged in the shell (201), a concave second arc-shaped groove (23) is formed in the end face, facing the main body part (10), of the upper cover part corresponding to the first arc-shaped groove (124), a functional integrated circuit (41), a charging circuit (42) and a wireless transceiver module (43) are arranged on the circuit board (40), the direct-current power supply (30) is connected with the functional integrated circuit (41) and the charging circuit (42), the wireless transceiver module (43) is connected with the functional integrated circuit (41), and the direct-current power supply (30) is used for supplying power to the charging circuit (30);
the direct current power supply (30) is a lithium battery;
the casing is including bottom casing (11) and the top casing (12) of relative setting, the first side of top casing (12) and keep away from the position of bottom casing (11) and be provided with two relative connecting blocks (121), be connected with pivot (122) between two connecting blocks (121), the second side of top casing (12) and keep away from the position of bottom casing (11) and protrude and be provided with sand grip (123), the bottom of the first side of shell (201) is equipped with two couple (21), the bottom of couple (21) and pivot (122) rotation connection of top casing (12), the bottom of the second side of shell (201) is connected with U-shaped joint spare (22), form opening (221) between U-shaped joint spare (22) and shell (201), sand grip (123) movably are located in opening (221).
2. The current transformer based on wireless transmission technology as claimed in claim 1, wherein: the first winding coil (60) and the second winding coil (70) are U-shaped or C-shaped.
3. The current transformer based on wireless transmission technology as claimed in claim 1, wherein: the coil winding device is characterized in that a coil accommodating groove (24) is formed in the shell (201), a plurality of protruding ribs (25) are arranged on the inner side wall of the coil accommodating groove (24), and the second winding coil (70) is located in the coil accommodating groove (24) and in interference fit with the ribs (25).
4. The current transformer based on wireless transmission technology as claimed in claim 1, wherein: the first winding coil (60) is provided with a first induction coil (61) and a second induction coil (62), both ends of the first induction coil (61) are connected with the functional integrated circuit (41), and both ends of the second induction coil (62) are connected with the charging circuit (42).
5. The wireless transmission technology based current transformer of claim 4, wherein: the functional integrated circuit (41) comprises four rectifying diodes D1-D4, inductors CZ1-CZ2, capacitors C1-C4, resistors R1-R3 and a main control chip U1, wherein a first end of a first induction coil (61) is connected with an anode of the rectifying diode D1 and a cathode of the rectifying diode D3; the second end of the first induction coil (61) is connected with the cathode of the rectifying diode D4 and the anode of the rectifying diode D2, the cathode of the rectifying diode D1 is connected with the cathode of the rectifying diode D2, the anode of the rectifying diode D3 is connected with the anode of the rectifying diode D4, the cathode of the rectifying diode D1 is connected with the first end of the capacitor C1 through the inductor CZ1, the anode of the rectifying diode D4 is connected with the second end of the capacitor C1 through the inductor CZ2, the first end of the capacitor C1 is connected with the first input end of the master control chip U1 through the resistor R1, the second end of the capacitor C1 is connected with the second input end of the master control chip U1 through the resistor R3, the resistor R2 is connected between the first end and the second end of the capacitor C1, the capacitor C4 is connected between the first input end and the second input end of the master control chip U1, the first input end of the master control chip U1 is grounded through the capacitor C2, and the second input end of the master control chip U1 is grounded through the capacitor C3.
6. The wireless transmission technology based current transformer of claim 4, wherein: the charging circuit (42) comprises four rectifying diodes D5-D8, a thermistor RT, a voltage stabilizing diode D9, a capacitor C5-C10, diodes D10-D12, resistors R4-R6, an inductor L1 and a voltage stabilizing chip U2, wherein a first end of a second induction coil (62) is connected with an anode of the rectifying diode D5 and a cathode of the rectifying diode D7; a second end of the second induction coil (62) is connected with the cathode of the rectifying diode D8 and is connected with the anode of the rectifying diode D6; the cathode of the rectifying diode D5 is connected with the cathode of the rectifying diode D6, and the anode of the rectifying diode D8 is connected with the anode of the rectifying diode D7; the cathode of the rectifier diode D5 is connected with the first pin of the voltage stabilizing chip U2 through the thermistor RT, and the anode of the rectifier diode D8 is connected with the third pin and the fifth pin of the voltage stabilizing chip U2; the voltage stabilizing diode D9, the capacitor C5, the capacitor C6 and the capacitor C7 are arranged in parallel between the first pin and the third pin of the voltage stabilizing chip U2; the anode of the diode D10 is connected with the second pin of the voltage stabilizing chip U2, and the cathode is connected with the first pin of the voltage stabilizing chip U2; the anode of the diode D11 is connected with the third pin of the voltage stabilizing chip U2, and the cathode is connected with the second pin of the voltage stabilizing chip U2; the second pin of the voltage stabilizing chip U2 is connected with the anode of a diode D12 through an inductor L1, and the cathode of the diode D12 is connected with the anode of a direct current power supply (30); the anode of the diode D12 is connected with the cathode of the direct current power supply (30) through resistors R4 and R6, the fourth pin of the voltage stabilizing chip U2 is connected with a node between the resistor R4 and the resistor R6, and the anode of the diode D12 is connected with the fourth pin of the voltage stabilizing chip U2 through a resistor R5; the capacitors C8-C10 are arranged in parallel between the anode of the diode D12 and the cathode of the direct current power supply (30).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811542564.2A CN109461573B (en) | 2018-12-17 | 2018-12-17 | Current transformer based on wireless transmission technology |
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| CN201811542564.2A CN109461573B (en) | 2018-12-17 | 2018-12-17 | Current transformer based on wireless transmission technology |
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| CN109461573A CN109461573A (en) | 2019-03-12 |
| CN109461573B true CN109461573B (en) | 2023-12-19 |
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| CN209029234U (en) * | 2018-12-17 | 2019-06-25 | 浙江超仪电子技术股份有限公司 | Current transformer based on Radio Transmission Technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7609512B2 (en) * | 2001-11-19 | 2009-10-27 | Otter Products, Llc | Protective enclosure for electronic device |
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| CN202815054U (en) * | 2012-10-10 | 2013-03-20 | 天津赛思科技发展有限公司 | Digital electronic type wireless zero-sequence mutual inductor |
| CN108281268A (en) * | 2018-04-04 | 2018-07-13 | 宁波台龙电力科技有限公司 | A kind of high-precision anti-open-close type mutual inductor of height |
| CN209029234U (en) * | 2018-12-17 | 2019-06-25 | 浙江超仪电子技术股份有限公司 | Current transformer based on Radio Transmission Technology |
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Address after: 314019 No. 88 Zhengyang West Road, Youchegang Town, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant after: Chaoyi Technology Co.,Ltd. Address before: 314018 No. 88 Zhengyang West Road, Youchegang Town, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant before: ZHEJIANG JOY ELECTRONIC TECHNOLOGY CO.,LTD. |
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