CN105136365A - Signal amplification type current vortex power measuring system - Google Patents
Signal amplification type current vortex power measuring system Download PDFInfo
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- CN105136365A CN105136365A CN201510249565.8A CN201510249565A CN105136365A CN 105136365 A CN105136365 A CN 105136365A CN 201510249565 A CN201510249565 A CN 201510249565A CN 105136365 A CN105136365 A CN 105136365A
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Abstract
The invention discloses a signal amplification type current vortex power measuring system. The signal amplification type current vortex power measuring system comprises a to-be-measured motor (1), a single-chip microcomputer (4), a motor control module (5), a display (6) and an operation module (7) which are connected with the single-chip microcomputer (4), a current vortex power measuring machine (2) connected with the to-be-measured motor (1), and a signal processing module (3) connected with the current vortex power measuring machine (2), wherein the motor control module (5) is further connected with the to-be-measured motor (1). The signal amplification type current vortex power measuring system is characterized in that a signal amplification circuit (8) is arranged between the signal processing module (3) and the single-chip microcomputer (4). Through the effect of the signal amplification circuit, torque signals outputted by the current vortex power measuring machine can be amplified, and accuracy of detection on output power of the to-be-measured motor can be guaranteed.
Description
Technical field
The present invention relates to a kind of eddy current dynamometric system, specifically refer to a kind of signal amplifying type eddy current dynamometric system.
Background technology
Electric eddy current dynamometer is the loading measurement of power equipment of current domestic advanced person, especially load in dynamometer test at the power machine of middle low power and micropower, the low speed of each power machine and High speed load dynamometer test aspect, relatively other type measurement of power loading equipemtn, in performance, price, reliability, safeguards there is obvious advantage in complexity etc.Especially in the loading measurement of power of low-speed machinery and micropower machinery, then other method is unrivaled especially.Therefore, replaced powder clutch, hydraulic dynamometer, DC generation unit etc. at a lot of occasion electric eddy current dynamometer, be used for measuring the performance of the power machines such as various motor, gasoline engine, diesel engine, gear case, become the necessaries of type approval test.But the torque signal that current used eddy current dynamometric system is sometimes collected is more weak, have impact on the test of power-measuring system to output power of motor to a great extent.
Summary of the invention
The object of the invention is to overcome traditional eddy current dynamometric system there will be and collect more weak torque signal, power of motor is tested to the defect impacted, a kind of signal amplifying type eddy current dynamometric system is provided.
Object of the present invention is achieved through the following technical solutions: a kind of signal amplifying type eddy current dynamometric system, by treating measured motor, single-chip microcomputer, the motor control module be connected with single-chip microcomputer, display, operational module, with treat the electric eddy current dynamometer that measured motor is connected, and the signal processing module to be connected with electric eddy current dynamometer, described motor control module also with treat that measured motor is connected, in order to reach object of the present invention, the present invention is also provided with signal amplification circuit between signal processing module and single-chip microcomputer.
Further, described signal amplification circuit is by amplifier P1, amplifier P2, amplifier P3, rejection gate Q1, triode VT5, one end is connected with the negative pole of amplifier P3 after resistance R16, the other end is then in turn through resistance R12 that resistance R11 is connected with the positive pole of amplifier P2 after resistance R14, one end is connected with the positive pole of amplifier P2, the resistance R15 that the other end is then connected with the positive pole of amplifier P3, negative pole is connected with the positive pole of amplifier P1, the polar capacitor C8 that positive pole is then connected with the output terminal of amplifier P1, the resistance R13 be in parallel with polar capacitor C8, and one end is connected with the emitter of triode VT5, the other end then together with the collector of triode VT5 as the resistance R17 of the output terminal of this signal amplification circuit, the negative pole of described amplifier P1 together with the output terminal of amplifier P3 as the input end of this signal amplification circuit, its output terminal is then connected with the positive pole of amplifier P3, minus earth, its output terminal of described amplifier P2 are then connected with the base stage of triode VT5.The positive pole of described rejection gate Q1 is connected with the output terminal of amplifier P2, its negative pole is then respectively with the output terminal of amplifier P3 and resistance R12 is connected with the tie point of resistance R16, output terminal is then connected with the collector of triode VT5.
Described signal processing module is by signal processing circuit, the Sheffer stroke gate control circuit be connected with signal processing circuit, the bistable trigger-action circuit be connected with Sheffer stroke gate control circuit, and form with the rear end transformation output circuit that bistable trigger-action circuit is connected with Sheffer stroke gate control circuit simultaneously.
Described signal processing circuit is by process chip U, the resistance R1 that one end is connected with-SIG the pin of process chip U, the other end is then connected with the BIAS pin of process chip U after resistance R3, one end is connected with-CAR the pin of process chip U, the resistance R2 of other end ground connection, and the resistance R4 that one end is connected with the GMIN pin of process chip U, the other end is then connected with the ADJ pin of process chip U after potentiometer R5 forms;-V the pin of described process chip U is respectively with the tie point of resistance R1 and resistance R3 and bistable trigger-action circuit is connected, its-OUT pin is all connected with Sheffer stroke gate control circuit with+OUT pin; + SIG the pin of described process chip U together with its-V pin as the input end of this signal processing circuit.
Described Sheffer stroke gate control circuit is by Sheffer stroke gate A1, Sheffer stroke gate A2, positive pole is connected with the output terminal of Sheffer stroke gate A1 after polar capacitor C4 through resistance R6 in turn, the polar capacitor C1 of its minus earth, N pole is connected with the tie point of polar capacitor C4 with resistance R6, the diode D1 of P pole ground connection, positive pole is connected with the N pole of diode D1 after resistance R7, the polar capacitor C2 of minus earth, one end is connected with-OUT the pin of process chip U, the resistance R8 that the other end is then connected with the positive pole of Sheffer stroke gate A1, one end is connected with+OUT the pin of process chip U, the resistance R9 that the other end is then connected with the negative pole of Sheffer stroke gate A1, negative pole is connected with the output terminal of Sheffer stroke gate A1, the polar capacitor C5 that positive pole is then connected with the negative pole of Sheffer stroke gate A2, be serially connected in the resistance R10 between the positive pole of Sheffer stroke gate A2 and output terminal, and form with the polar capacitor C7 that resistance R10 is in parallel,-OUT the pin of described process chip U is connected with the positive pole of polar capacitor C1, its+OUT pin is then connected with the positive pole of polar capacitor C2, the negative pole of described Sheffer stroke gate A1 is all connected with bistable trigger-action circuit with its output terminal, the negative pole of described Sheffer stroke gate A2 is connected with bistable trigger-action circuit, its output terminal is then connected with bistable trigger-action circuit and rear end transformation output circuit respectively.
Described bistable trigger-action circuit is by triode VT1, triode VT2, the polar capacitor C3 that positive pole is connected with the collector of triode VT1, negative pole is then connected with the base stage of triode VT2, the polar capacitor C6 that positive pole is connected with the base stage of triode VT1, negative pole is then connected with the emitter of triode VT2, and the diode D2 that N pole is connected with the collector of triode VT2, P pole is then connected with the emitter of triode VT1 forms; The described collector of triode VT1 is connected with the negative pole of Sheffer stroke gate A1, its emitter is then connected with-V the pin of process chip U, base stage is then connected with the negative pole of Sheffer stroke gate A2; The described base stage of triode VT2 is connected with the output terminal of Sheffer stroke gate A1, its emitter is then connected with the output terminal of Sheffer stroke gate A2, collector is then connected with rear end transformation output circuit.
Described rear end transformation output circuit is by transformer T, and triode VT3, triode VT4, be arranged on telefault L1 and the telefault L2 on limit, transformer T source, be arranged on the telefault L3 of transformer T secondary, diode D3, and diode D4 forms; The N pole of described diode D3 is connected with the tap of telefault L1, P pole is then connected with the output terminal of Sheffer stroke gate A2, the P pole of diode D4 is connected with the non-same polarity of telefault L3, its N pole then together with the Same Name of Ends of telefault L3 as the output terminal of this rear end transformation output circuit; The described Same Name of Ends of telefault L1 is connected with the output terminal of Sheffer stroke gate A2, its non-same polarity is then connected with the base stage of triode VT4; The Same Name of Ends of described telefault L2 is connected with the collector of triode VT4, non-same polarity is then connected with the collector of triode VT3, its tap is then connected with the Same Name of Ends of telefault L1; The emitter of described triode VT3 is connected with the emitter of triode VT4, its base stage is then connected with the output terminal of Sheffer stroke gate A2 and the collector of triode VT2 respectively.
In order to reach better implementation result, described process chip U is preferably LM146 integrated circuit to realize.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) structure of the present invention is simple, and easy to operate, system cost is cheap.
(2) the present invention more saves energy consumption while guaranteeing measuring accuracy, reduces the cost in electromechanical testing process.
(3) the present invention is by the effect of signal amplification circuit, can amplify the torque signal that electric eddy current dynamometer exports, to guarantee that the present invention detects the accuracy of output power of motor to be measured.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is signal processing module electrical block diagram of the present invention;
Fig. 3 is signal amplification circuit structural representation of the present invention.
Reference numeral name in above accompanying drawing is called:
1-treat measured motor, 2-electric eddy current dynamometer, 3-signal processing module, 4-single-chip microcomputer, 5-motor control module, 6-display, 7-operational module, 8-signal amplification circuit, 31-signal processing circuit, 32-Sheffer stroke gate control circuit, 33-bistable trigger-action circuit, 34-rear end transformation output circuit.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the present invention is by treating measured motor 1, single-chip microcomputer 4, the motor control module 5 be connected with single-chip microcomputer 4, display 6, operational module 7, with the electric eddy current dynamometer 2 treating that measured motor 1 is connected, the signal processing module 3 be connected with electric eddy current dynamometer 2, described motor control module 5 also with treat that measured motor 1 is connected, in order to reach object of the present invention, the present invention is also provided with signal amplification circuit 8 between signal processing module 3 and single-chip microcomputer 4.
Wherein, single-chip microcomputer 4 is as control center of the present invention.Electric eddy current dynamometer 2 is for detecting the torque signal for the treatment of measured motor and exporting.Signal processing module 3 processes for the torque signal exported electric eddy current dynamometer 2.Signal amplification circuit 8 can carry out amplification process to torque signal.Single-chip microcomputer 4 can calculate by torque signal the realtime power treating measured motor 1, and is shown intuitively by display 6.Motor control module 5 controls for treating measured motor 1, and staff then can set by operational module 7 output power treating measured motor 1.
During work, start and treat measured motor 1, operator sets the output power treating measured motor 1 on operational module 7, and at this moment single-chip microcomputer 4 sends instruction to motor control module 5, makes it treat measured motor 1 according to the power set by operator and controls.The torque signal of measured motor 1 is treated in electric eddy current dynamometer 2 detections, this torque signal flows to single-chip microcomputer 4 after the process of signal processing module 3 and signal amplification circuit 8, and single-chip microcomputer 4 is calculated according to torque signal the realtime power for the treatment of measured motor 1 and shown by display 6.Operator can treating compared with the performance number that the realtime power of measured motor 1 and its are arranged in operational module 7, to judge the performance treating measured motor 1 thus.
In order to reach better effect, the DWD system electric eddy current dynamometer that this electric eddy current dynamometer 2 preferentially adopts Sichuan Cheng Bang observation and control technology company limited to produce realizes, and the electric eddy current dynamometer structure of this series is simple, convenient operating maintenance, braking moment is large, and measuring accuracy is high.And single-chip microcomputer 4, motor control module 5, operational module 7 and display 6 all adopt existing technology to realize.
As shown in Figure 2, signal processing module 3 is by signal processing circuit 31, the Sheffer stroke gate control circuit 32 be connected with signal processing circuit 31, the bistable trigger-action circuit 33 be connected with Sheffer stroke gate control circuit 32, and form with the rear end transformation output circuit 34 that bistable trigger-action circuit 33 is connected with Sheffer stroke gate control circuit 32 simultaneously.
Signal processing circuit 31 is wherein by process chip U, the resistance R1 that one end is connected with-SIG the pin of process chip U, the other end is then connected with the BIAS pin of process chip U after resistance R3, one end is connected with-CAR the pin of process chip U, the resistance R2 of other end ground connection, and the resistance R4 that one end is connected with the GMIN pin of process chip U, the other end is then connected with the ADJ pin of process chip U after potentiometer R5 forms.-V the pin of described process chip U is respectively with the tie point of resistance R1 and resistance R3 and bistable trigger-action circuit 33 is connected, its-OUT pin is all connected with Sheffer stroke gate control circuit 32 with+OUT pin.+ SIG the pin of described process chip U together with its-V pin as the input end of this signal processing circuit 31.In order to better implement the present invention, described process chip U preferentially adopts LM1496 integrated circuit to realize.
Described Sheffer stroke gate control circuit 32 is by Sheffer stroke gate A1, Sheffer stroke gate A2, positive pole is connected with the output terminal of Sheffer stroke gate A1 after polar capacitor C4 through resistance R6 in turn, the polar capacitor C1 of its minus earth, N pole is connected with the tie point of polar capacitor C4 with resistance R6, the diode D1 of P pole ground connection, positive pole is connected with the N pole of diode D1 after resistance R7, the polar capacitor C2 of minus earth, one end is connected with-OUT the pin of process chip U, the resistance R8 that the other end is then connected with the positive pole of Sheffer stroke gate A1, one end is connected with+OUT the pin of process chip U, the resistance R9 that the other end is then connected with the negative pole of Sheffer stroke gate A1, negative pole is connected with the output terminal of Sheffer stroke gate A1, the polar capacitor C5 that positive pole is then connected with the negative pole of Sheffer stroke gate A2, be serially connected in the resistance R10 between the positive pole of Sheffer stroke gate A2 and output terminal, and form with the polar capacitor C7 that resistance R10 is in parallel.-OUT the pin of described process chip U is connected with the positive pole of polar capacitor C1, its+OUT pin is then connected with the positive pole of polar capacitor C2; The negative pole of described Sheffer stroke gate A1 is all connected with bistable trigger-action circuit 33 with its output terminal.The negative pole of described Sheffer stroke gate A2 is connected with bistable trigger-action circuit 33, its output terminal is then connected with bistable trigger-action circuit 33 and rear end transformation output circuit 34 respectively.
Described bistable trigger-action circuit 33 is by triode VT1, triode VT2, the polar capacitor C3 that positive pole is connected with the collector of triode VT1, negative pole is then connected with the base stage of triode VT2, the polar capacitor C6 that positive pole is connected with the base stage of triode VT1, negative pole is then connected with the emitter of triode VT2, and the diode D2 that N pole is connected with the collector of triode VT2, P pole is then connected with the emitter of triode VT1 forms.The described collector of triode VT1 is connected with the negative pole of Sheffer stroke gate A1, its emitter is then connected with-V the pin of process chip U, base stage is then connected with the negative pole of Sheffer stroke gate A2.The described base stage of triode VT2 is connected with the output terminal of Sheffer stroke gate A1, its emitter is then connected with the output terminal of Sheffer stroke gate A2, collector is then connected with rear end transformation output circuit 34.
Described rear end transformation output circuit 34 is by transformer T, and triode VT3, triode VT4, be arranged on telefault L1 and the telefault L2 on limit, transformer T source, be arranged on the telefault L3 of transformer T secondary, diode D3, and diode D4 forms.During connection, the N pole of described diode D3 is connected with the tap of telefault L1, P pole is then connected with the output terminal of Sheffer stroke gate A2, the P pole of diode D4 is connected with the non-same polarity of telefault L3, its N pole then together with the Same Name of Ends of telefault L3 as the output terminal of this rear end transformation output circuit 34; The described Same Name of Ends of telefault L1 is connected with the output terminal of Sheffer stroke gate A2, its non-same polarity is then connected with the base stage of triode VT4; The Same Name of Ends of described telefault L2 is connected with the collector of triode VT4, non-same polarity is then connected with the collector of triode VT3, its tap is then connected with the Same Name of Ends of telefault L1; The emitter of described triode VT3 is connected with the emitter of triode VT4, its base stage is then connected with the output terminal of Sheffer stroke gate A2 and the collector of triode VT2 respectively.
Signal amplification circuit 8 is emphasis of the present invention, and as shown in Figure 3, it is by amplifier P1, amplifier P2, amplifier P3, rejection gate Q1, triode VT5, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, polar capacitor C8 form.During connection, one end of resistance R12 is connected with the negative pole of amplifier P3 after resistance R16, its other end is then connected with the positive pole of amplifier P2 after resistance R14 through resistance R11 in turn, one end of resistance R15 is connected with the positive pole of amplifier P2, its other end is then connected with the positive pole of amplifier P3, the negative pole of polar capacitor C8 is connected with the positive pole of amplifier P1, its positive pole is then connected with the output terminal of amplifier P1, resistance R13 is then in parallel with polar capacitor C8, one end of resistance R17 is connected with the emitter of triode VT5, its other end then together with the collector of triode VT5 as the output terminal of this signal amplification circuit 8.The negative pole of described amplifier P1 is then connected with the positive pole of amplifier P3 as the input end of this signal amplification circuit 8, its output terminal together with the output terminal of amplifier P3.Minus earth, its output terminal of described amplifier P2 are then connected with the base stage of triode VT5.The positive pole of described rejection gate Q1 is connected with the output terminal of amplifier P2, its negative pole is then respectively with the output terminal of amplifier P3 and resistance R12 is connected with the tie point of resistance R16, output terminal is then connected with the collector of triode VT5.
As mentioned above, just well the present invention can be realized.
Claims (7)
1. a signal amplifying type eddy current dynamometric system, by treating measured motor (1), single-chip microcomputer (4), the motor control module (5) be connected with single-chip microcomputer (4), display (6), operational module (7), with the electric eddy current dynamometer (2) treating that measured motor (1) is connected, and the signal processing module (3) to be connected with electric eddy current dynamometer (2) forms, described motor control module (5) also with treat that measured motor (1) is connected, it is characterized in that: between signal processing module (3) and single-chip microcomputer (4), be also provided with signal amplification circuit (8), described signal amplification circuit (8) is by amplifier P1, amplifier P2, amplifier P3, rejection gate Q1, triode VT5, one end is connected with the negative pole of amplifier P3 after resistance R16, the other end is then in turn through resistance R12 that resistance R11 is connected with the positive pole of amplifier P2 after resistance R14, one end is connected with the positive pole of amplifier P2, the resistance R15 that the other end is then connected with the positive pole of amplifier P3, negative pole is connected with the positive pole of amplifier P1, the polar capacitor C8 that positive pole is then connected with the output terminal of amplifier P1, the resistance R13 be in parallel with polar capacitor C8, and one end is connected with the emitter of triode VT5, the other end then together with the collector of triode VT5 as the resistance R17 of the output terminal of this signal amplification circuit (8), the negative pole of described amplifier P1 together with the output terminal of amplifier P3 as the input end of this signal amplification circuit (8), its output terminal is then connected with the positive pole of amplifier P3, minus earth, its output terminal of described amplifier P2 are then connected with the base stage of triode VT5, the positive pole of described rejection gate Q1 is connected with the output terminal of amplifier P2, its negative pole is then respectively with the output terminal of amplifier P3 and resistance R12 is connected with the tie point of resistance R16, output terminal is then connected with the collector of triode VT5.
2. a kind of signal amplifying type eddy current dynamometric system according to claim 1, it is characterized in that: described signal processing module (3) is by signal processing circuit (31), the Sheffer stroke gate control circuit (32) be connected with signal processing circuit (31), the bistable trigger-action circuit (33) be connected with Sheffer stroke gate control circuit (32), and form with rear end transformation output circuit (34) that bistable trigger-action circuit (33) is connected with Sheffer stroke gate control circuit (32) simultaneously.
3. a kind of signal amplifying type eddy current dynamometric system according to claim 2, it is characterized in that: described signal processing circuit (31) is by process chip U, the resistance R1 that one end is connected with-SIG the pin of process chip U, the other end is then connected with the BIAS pin of process chip U after resistance R3, one end is connected with-CAR the pin of process chip U, the resistance R2 of other end ground connection, and the resistance R4 that one end is connected with the GMIN pin of process chip U, the other end is then connected with the ADJ pin of process chip U after potentiometer R5 forms;-V the pin of described process chip U is respectively with the tie point of resistance R1 and resistance R3 and bistable trigger-action circuit (33) is connected, its-OUT pin is all connected with Sheffer stroke gate control circuit (32) with+OUT pin; + SIG the pin of described process chip U together with its-V pin as the input end of this signal processing circuit (31).
4. a kind of signal amplifying type eddy current dynamometric system according to claim 3, it is characterized in that: described Sheffer stroke gate control circuit (32) is by Sheffer stroke gate A1, Sheffer stroke gate A2, positive pole is connected with the output terminal of Sheffer stroke gate A1 after polar capacitor C4 through resistance R6 in turn, the polar capacitor C1 of its minus earth, N pole is connected with the tie point of polar capacitor C4 with resistance R6, the diode D1 of P pole ground connection, positive pole is connected with the N pole of diode D1 after resistance R7, the polar capacitor C2 of minus earth, one end is connected with-OUT the pin of process chip U, the resistance R8 that the other end is then connected with the positive pole of Sheffer stroke gate A1, one end is connected with+OUT the pin of process chip U, the resistance R9 that the other end is then connected with the negative pole of Sheffer stroke gate A1, negative pole is connected with the output terminal of Sheffer stroke gate A1, the polar capacitor C5 that positive pole is then connected with the negative pole of Sheffer stroke gate A2, be serially connected in the resistance R10 between the positive pole of Sheffer stroke gate A2 and output terminal, and form with the polar capacitor C7 that resistance R10 is in parallel,-OUT the pin of described process chip U is connected with the positive pole of polar capacitor C1, its+OUT pin is then connected with the positive pole of polar capacitor C2, the negative pole of described Sheffer stroke gate A1 is all connected with bistable trigger-action circuit (33) with its output terminal, the negative pole of described Sheffer stroke gate A2 is connected with bistable trigger-action circuit (33), its output terminal is then connected with bistable trigger-action circuit (33) and rear end transformation output circuit (34) respectively.
5. a kind of signal amplifying type eddy current dynamometric system according to claim 4, it is characterized in that: described bistable trigger-action circuit (33) is by triode VT1, triode VT2, the polar capacitor C3 that positive pole is connected with the collector of triode VT1, negative pole is then connected with the base stage of triode VT2, the polar capacitor C6 that positive pole is connected with the base stage of triode VT1, negative pole is then connected with the emitter of triode VT2, and the diode D2 that N pole is connected with the collector of triode VT2, P pole is then connected with the emitter of triode VT1 forms; The described collector of triode VT1 is connected with the negative pole of Sheffer stroke gate A1, its emitter is then connected with-V the pin of process chip U, base stage is then connected with the negative pole of Sheffer stroke gate A2; The described base stage of triode VT2 is connected with the output terminal of Sheffer stroke gate A1, its emitter is then connected with the output terminal of Sheffer stroke gate A2, collector is then connected with rear end transformation output circuit (34).
6. a kind of signal amplifying type eddy current dynamometric system according to claim 5, it is characterized in that: described rear end transformation output circuit (34) is by transformer T, triode VT3, triode VT4, be arranged on telefault L1 and the telefault L2 on limit, transformer T source, be arranged on the telefault L3 of transformer T secondary, diode D3, and diode D4 forms; The N pole of described diode D3 is connected with the tap of telefault L1, P pole is then connected with the output terminal of Sheffer stroke gate A2, the P pole of diode D4 is connected with the non-same polarity of telefault L3, its N pole then together with the Same Name of Ends of telefault L3 as the output terminal of this rear end transformation output circuit (34); The described Same Name of Ends of telefault L1 is connected with the output terminal of Sheffer stroke gate A2, its non-same polarity is then connected with the base stage of triode VT4; The Same Name of Ends of described telefault L2 is connected with the collector of triode VT4, non-same polarity is then connected with the collector of triode VT3, its tap is then connected with the Same Name of Ends of telefault L1; The emitter of described triode VT3 is connected with the emitter of triode VT4, its base stage is then connected with the output terminal of Sheffer stroke gate A2 and the collector of triode VT2 respectively.
7. a kind of signal amplifying type eddy current dynamometric system according to claim 6, is characterized in that: described process chip U is LM146 integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249565.8A CN105136365A (en) | 2015-05-17 | 2015-05-17 | Signal amplification type current vortex power measuring system |
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| CN201510249565.8A CN105136365A (en) | 2015-05-17 | 2015-05-17 | Signal amplification type current vortex power measuring system |
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| CN105136365A true CN105136365A (en) | 2015-12-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN120326199A (en) * | 2025-06-10 | 2025-07-18 | 苏州星祥益精密制造有限公司 | A femtosecond laser processing measurement and control system based on non-contact resistance measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120326199A (en) * | 2025-06-10 | 2025-07-18 | 苏州星祥益精密制造有限公司 | A femtosecond laser processing measurement and control system based on non-contact resistance measurement |
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Application publication date: 20151209 |