CN104912648A - High-sensitive water temperature detecting system for engine - Google Patents
High-sensitive water temperature detecting system for engine Download PDFInfo
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- CN104912648A CN104912648A CN201510202113.4A CN201510202113A CN104912648A CN 104912648 A CN104912648 A CN 104912648A CN 201510202113 A CN201510202113 A CN 201510202113A CN 104912648 A CN104912648 A CN 104912648A
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Abstract
The invention discloses a high-sensitive water temperature detecting system for an engine. The high-sensitive water temperature detecting system for the engine is composed of a single-chip computer (3), a temperature sensor (1), a signal conversion module (2) connected with the temperature sensor (1), a storage module (4) and a power supply module(5) connected with the single-chip computer(3), a display module (6) connected with the single-chip computer (3) after passing through a first polar capacitance, and a warning circuit (7) connected with the single-chip computer (3) after passing through a first resistance and a first amplifier in sequence. The high-sensitive water temperature detecting system for the engine is characterized in that a phase locking module (8) is further arranged between the signal conversion module (2) and the single-chip computer (3). The high-sensitive water temperature detecting system for the engine has the advantages that the water detecting sensitivity is high, an alarm can be given out fast when the temperature of the engine exceeds a preset value to warn a tester.
Description
Technical field
The present invention relates to Engine Block Test field, specifically refer to a kind of highly sensitive engine water temperature detection system.
Background technique
In motor car engine testing property process, even damage if the too high meeting of engine water temperature causes cylinder head, cylinder block to be out of shape, namely during water temperature over-high, engine oil viscosity can be thinning, sae number declines, and the high speed such as piston, valve movement parts is more easily out of shape simultaneously, causes motor unable, time serious, the piston of dilatancy can pull cylinder, the molten change of crankshaft bearing liner and locking bent axle etc., and consequence is hardly imaginable.Therefore, sending out in engine performance measuring process and must detecting engine water temperature, engine damage is caused to prevent water temperature over-high.But its sensitivity of water temperature detection system that traditional engine performance measuring system uses is not high, can not very fast giving the alarm when engine water temperature is too high, cause motor to go to work braving one's illness, therefore and easily cause engine damage.
Summary of the invention
The object of the invention is to solve the defect that water temperature detection system sensitivity that current engine performance measuring system uses is low, a kind of highly sensitive engine water temperature detection system is provided.
Object of the present invention is by following technical proposals reality: a kind of highly sensitive engine water temperature detection system, by single-chip microcomputer, temperature transducer, the signal conversion module be connected with temperature transducer, the memory module be connected with single-chip microcomputer and power module, the display modular be connected with single-chip microcomputer after polar capacitor C1, and the warning circuit be connected with single-chip microcomputer after amplifier P1 through resistance R1 in turn forms, phase-locked module is also provided with between signal conversion module and single-chip microcomputer, described phase-locked module is by amplifier P2, amplifier P3, amplifier P4, triode VT5, triode VT6, one end is connected with the positive pole of amplifier P2, the other end together with the output terminal of amplifier P4 as the resistance R14 of circuit input end, be serially connected in the polar capacitor C8 between the positive pole of amplifier P2 and output terminal, one end is connected with the negative pole of amplifier P2, the resistance R16 that the other end is connected with the collector electrode of triode VT5, one end is connected with the negative pole of amplifier P2, the resistance R15 that the other end is connected with the output terminal of amplifier P4, the polar capacitor C7 be in parallel with resistance R15, N pole is connected with the base stage of triode VT5, the diode D6 that P pole is connected with the emitter of triode VT5, N pole is connected with the base stage of triode VT6, the diode D7 that P pole is then connected with the base stage of triode VT5 after resistance R17, one end is connected with the negative pole of amplifier P3, the resistance R18 that the other end is connected with the P pole of diode D7, be serially connected in the resistance R19 between the negative pole of amplifier P3 and output terminal, one end is connected with the output terminal of amplifier P3, the resistance R20 that the other end is connected with the emitter of triode VT6, one end is connected with the negative pole of amplifier P4, the other end is the resistance R23 of ground connection after resistance R22 then, positive pole is connected with the negative pole of amplifier P4, the polar capacitor C9 of minus earth, and one end is connected with the collector electrode of triode VT6, the resistance R21 of the other end as circuit output end together with the output terminal of amplifier P3 forms, the negative pole of described amplifier P2 is connected with its positive pole, output terminal is then connected with the positive pole of amplifier P3, the positive pole of described amplifier P4 is connected with its output terminal, and the collector electrode of described triode VT6 is connected with the tie point of resistance R22 with resistance R23.
Described signal conversion module is by transformer T, the front end input circlult be connected with the former limit of transformer T, the current rectifying and wave filtering circuit be connected with transformer T secondary, the field effect transistor trigger circuit be connected with front end input circlult, and form with the signaling conversion circuit that field effect transistor trigger circuit are connected with current rectifying and wave filtering circuit simultaneously.
Described front end input circlult comprises polar capacitor C2, polar capacitor C3, resistance R2 and diode D1; The N pole of described diode D1 is connected with the tap L on the former limit of transformer T, P pole is connected with field effect transistor trigger circuit, polar capacitor C2 and diode D1 is in parallel, the negative pole of polar capacitor C3 is connected with field effect transistor trigger circuit, positive pole is then connected with the P pole of diode D1 after resistance R2, and the described Same Name of Ends on the former limit of transformer T is connected with the P pole of diode D1, its non-same polarity is then connected with field effect transistor trigger circuit.
Described current rectifying and wave filtering circuit comprises diode bridge rectifier U, polar capacitor C4, resistance R6, diode D2; The input end of described diode bridge rectifier U is connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, its cathode output end is all connected with signaling conversion circuit with cathode output end, the positive pole of polar capacitor C4 is connected with cathode output end with the cathode output end of diode bridge rectifier U respectively with negative pole, and the P pole of diode D2 is connected with the cathode output end of diode bridge rectifier U, N pole is connected with the cathode output end of diode bridge rectifier U after resistance R6.
Described field effect transistor trigger circuit are by field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, field effect transistor Q4, be serially connected in the resistance R3 between the grid of field effect transistor Q1 and source electrode, be serially connected in the resistance R4 between the grid of field effect transistor Q2 and source electrode, and the resistance R5 be serially connected between the grid of field effect transistor Q3 and source electrode forms; The source electrode of described field effect transistor Q1 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the P pole of diode D1 and the drain electrode of field effect transistor Q2 simultaneously, the source electrode of described field effect transistor Q3 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the negative pole of polar capacitor C3 and the non-same polarity on the former limit of transformer T simultaneously, and the source electrode of described field effect transistor Q4 is simultaneously with the source electrode of field effect transistor Q3 and signaling conversion circuit is connected, grid is then connected with signaling conversion circuit, draining then is connected with the drain electrode of field effect transistor Q3.
Described signaling conversion circuit is by triode VT1, triode VT2, triode VT3, triode VT4, unidirectional thyristor D3, one end is connected with the P pole of diode D2, the resistance R7 that the other end is connected with the collector electrode of triode VT1, positive pole is connected with the grid of field effect transistor Q4, the polar capacitor C5 that negative pole is then connected with the P pole of unidirectional thyristor D3 after resistance R8, positive pole is connected with the P pole of diode D2 after resistance R9, the polar capacitor C6 that negative pole is then connected with the N pole of unidirectional thyristor D3 after diode D4, one end is connected with the control pole of unidirectional thyristor D3, the resistance R10 that the other end is connected with the collector electrode of triode VT2, one end is connected with the P pole of diode D2, the resistance R11 that the other end is connected with the base stage of triode VT4, one end is connected with the N pole of unidirectional thyristor D3, the inductance L 1 that the other end is connected with the collector electrode of triode VT4, P pole is connected with the collector electrode of triode VT4, the diode D5 of N pole ground connection after resistance R13, and one end is connected with the base stage of triode VT3, the resistance R12 that the other end is connected with the N pole of diode D5 forms, while the emitter of described triode VT1 is connected with the source electrode of field effect transistor Q4, ground connection, base stage are connected with the positive pole of polar capacitor C6, grounded-emitter connection, the base stage of triode VT2 are then connected with the negative pole of polar capacitor C5, the N pole of described unidirectional thyristor D3 is connected with the positive pole of polar capacitor C4, the collector electrode of triode VT3 is connected with the base stage of triode VT4, grounded-emitter connection, the grounded-emitter connection of described triode VT4.
Described temperature transducer is HD-WZP-PT100 type cooling-water temperature sensor, and field effect transistor Q1, field effect transistor Q2, field effect transistor Q3 and field effect transistor Q4 is then preferably unipolar transistor and realizes.
The present invention compared with prior art has the following advantages and beneficial effect:
1, water temperature detection sensitivity of the present invention is high, can give the alarm fast when engine water temperature exceedes setting value, reminds tester.
2, phase-locked module by signal processing rate of the present invention is fast, and signal after process is more clear, and water temperature detection system can be made a response to engine water temperature more accurately.
3, element of the present invention is with low cost, simple to operate, is suitable for extensive popularization.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is signal conversion module electrical block diagram of the present invention.
Fig. 3 is phase-locked modular circuit structural representation of the present invention.
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 single-chip microcomputer 3, temperature transducer 1, the signal conversion module 2 be connected with temperature transducer 1, the memory module 4 be connected with single-chip microcomputer 3 and power module 5, the display modular 6 be connected with single-chip microcomputer 3 after polar capacitor C1, the phase-locked module 8 that in turn through the warning circuit 7 that resistance R1 is connected with single-chip microcomputer 3 after amplifier P1, one end is connected with signal conversion module 2, the other end is connected with single-chip microcomputer 3 forms.
Wherein, single-chip microcomputer 3 is as control module of the present invention, and temperature transducer 1 is arranged in engine water tank, for gathering the water temperature signal in water tank, and water temperature signal is transferred to signal conversion module 2.Signal conversion module 2 flows to single-chip microcomputer 3 for water temperature signal being converted to corresponding voltage signal.Power module 5 provides power supply for giving whole water temperature detection system.Then be previously stored with the CLV ceiling limit value of water temperature in memory module 4, display modular 6 can show real-time water temperature value intuitively.When water temperature exceedes the CLV ceiling limit value preset, warning circuit 7 can sound the alarm; Phase-locked module 8 is for doing further process to signal.
In order to better implement the present invention, this temperature transducer 1 is preferably the HD-WZP-PT100 type cooling-water temperature sensor that Hao Du Science and Technology Ltd. of Shenzhen produces, and it is swift in response, and Applicable scope is-70 DEG C-500 DEG C.Display modular 6 adopts traditional display device, and signal conversion module 2, memory module 4, power module 5, warning circuit 7 adopt traditional module and circuit to realize.Phase-locked module 8 is then emphasis of the present invention.
As shown in Figure 3, this phase-locked module 8 is by amplifier P2, amplifier P3, amplifier P4, triode VT5, triode VT6, one end is connected with the positive pole of amplifier P2, the other end together with the output terminal of amplifier P4 as the resistance R14 of circuit input end, be serially connected in the polar capacitor C8 between the positive pole of amplifier P2 and output terminal, one end is connected with the negative pole of amplifier P2, the resistance R16 that the other end is connected with the collector electrode of triode VT5, one end is connected with the negative pole of amplifier P2, the resistance R15 that the other end is connected with the output terminal of amplifier P4, the polar capacitor C7 be in parallel with resistance R15, N pole is connected with the base stage of triode VT5, the diode D6 that P pole is connected with the emitter of triode VT5, N pole is connected with the base stage of triode VT6, the diode D7 that P pole is then connected with the base stage of triode VT5 after resistance R17, one end is connected with the negative pole of amplifier P3, the resistance R18 that the other end is connected with the P pole of diode D7, be serially connected in the resistance R19 between the negative pole of amplifier P3 and output terminal, one end is connected with the output terminal of amplifier P3, the resistance R20 that the other end is connected with the emitter of triode VT6, one end is connected with the negative pole of amplifier P4, the other end is the resistance R23 of ground connection after resistance R22 then, positive pole is connected with the negative pole of amplifier P4, the polar capacitor C9 of minus earth, and one end is connected with the collector electrode of triode VT6, the resistance R21 of the other end as circuit output end together with the output terminal of amplifier P3 forms.The negative pole of described amplifier P2 is connected with its positive pole, output terminal is then connected with the positive pole of amplifier P3; The positive pole of described amplifier P4 is connected with its output terminal, and the collector electrode of described triode VT6 is connected with the tie point of resistance R22 with resistance R23.
In addition, as shown in Figure 2, signal conversion module 2 is by transformer T, the front end input circlult 21 be connected with the former limit of transformer T, the current rectifying and wave filtering circuit 22 be connected with transformer T secondary, the field effect transistor trigger circuit 23 be connected with front end input circlult 21, and form with the signaling conversion circuit 24 that field effect transistor trigger circuit 23 are connected with current rectifying and wave filtering circuit 22 simultaneously.
Wherein, front end input circlult 21 comprises polar capacitor C2, polar capacitor C3, resistance R2 and diode D1.During connection, the N pole of diode D1 is connected with the tap L on the former limit of transformer T, P pole is connected with field effect transistor trigger circuit 23, polar capacitor C2 and diode D1 is in parallel, the negative pole of polar capacitor C3 is connected with field effect transistor trigger circuit 23, positive pole is then connected with the P pole of diode D1 after resistance R2, and the described Same Name of Ends on the former limit of transformer T is connected with the P pole of diode D1, its non-same polarity is then connected with field effect transistor trigger circuit 23.
Described current rectifying and wave filtering circuit 22 comprises diode bridge rectifier U, polar capacitor C4, resistance R6, diode D2.During connection, the input end of diode bridge rectifier U is connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, its cathode output end is all connected with signaling conversion circuit 24 with cathode output end, the positive pole of polar capacitor C4 is connected with cathode output end with the cathode output end of diode bridge rectifier U respectively with negative pole, and the P pole of diode D2 is connected with the cathode output end of diode bridge rectifier U, N pole is connected with the cathode output end of diode bridge rectifier U after resistance R6.
Described field effect transistor trigger circuit 23 are by field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, field effect transistor Q4, be serially connected in the resistance R3 between the grid of field effect transistor Q1 and source electrode, be serially connected in the resistance R4 between the grid of field effect transistor Q2 and source electrode, and the resistance R5 be serially connected between the grid of field effect transistor Q3 and source electrode forms; The source electrode of described field effect transistor Q1 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the P pole of diode D1 and the drain electrode of field effect transistor Q2 simultaneously, the source electrode of described field effect transistor Q3 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the negative pole of polar capacitor C3 and the non-same polarity on the former limit of transformer T simultaneously, and the source electrode of described field effect transistor Q4 is simultaneously with the source electrode of field effect transistor Q3 and signaling conversion circuit 24 is connected, grid is then connected with signaling conversion circuit 24, draining then is connected with the drain electrode of field effect transistor Q3.In order to better implement the present invention, described field effect transistor Q1, field effect transistor Q2, field effect transistor Q3 and field effect transistor Q4 are all preferably unipolar transistor and realize.
Signaling conversion circuit 24 is by triode VT1, triode VT2, triode VT3, triode VT4, unidirectional thyristor D3, one end is connected with the P pole of diode D2, the resistance R7 that the other end is connected with the collector electrode of triode VT1, positive pole is connected with the grid of field effect transistor Q4, the polar capacitor C5 that negative pole is then connected with the P pole of unidirectional thyristor D3 after resistance R8, positive pole is connected with the P pole of diode D2 after resistance R9, the polar capacitor C6 that negative pole is then connected with the N pole of unidirectional thyristor D3 after diode D4, one end is connected with the control pole of unidirectional thyristor D3, the resistance R10 that the other end is connected with the collector electrode of triode VT2, one end is connected with the P pole of diode D2, the resistance R11 that the other end is connected with the base stage of triode VT4, one end is connected with the N pole of unidirectional thyristor D3, the inductance L 1 that the other end is connected with the collector electrode of triode VT4, P pole is connected with the collector electrode of triode VT4, the diode D5 of N pole ground connection after resistance R13, and one end is connected with the base stage of triode VT3, the resistance R12 that the other end is connected with the N pole of diode D5 forms.While the emitter of described triode VT1 is connected with the source electrode of field effect transistor Q4, ground connection, base stage are connected with the positive pole of polar capacitor C6, grounded-emitter connection, the base stage of triode VT2 are then connected with the negative pole of polar capacitor C5, the N pole of described unidirectional thyristor D3 is connected with the positive pole of polar capacitor C4, the collector electrode of triode VT3 is connected with the base stage of triode VT4, grounded-emitter connection, the grounded-emitter connection of described triode VT4.
During work, temperature transducer 1 gathers the water temperature signal of motor, this water temperature signal flows to single-chip microcomputer 3 after the process of signal conversion module 2 and phase-locked module 8, single-chip microcomputer 3 flows to memory module 4 water temperature signal, memory module 4 real-time water temperature compared with the water temperature value prestored therein, as real-time water temperature higher than the water temperature value prestored therein time, memory module 4 feeds back signal to single-chip microcomputer 3, sends instruction impel warning circuit 7 to give the alarm by single-chip microcomputer 3.
As mentioned above, just well the present invention can be realized.
Claims (8)
1. a highly sensitive engine water temperature detection system, by single-chip microcomputer (3), temperature transducer (1), the signal conversion module (2) be connected with temperature transducer (1), the memory module (4) be connected with single-chip microcomputer (3) and power module (5), the display modular (6) be connected with single-chip microcomputer (3) after polar capacitor C1, and the warning circuit (7) be connected with single-chip microcomputer (3) after amplifier P1 through resistance R1 in turn forms, it is characterized in that: between signal conversion module (2) and single-chip microcomputer (3), be also provided with phase-locked module (8), described phase-locked module (8) is by amplifier P2, amplifier P3, amplifier P4, triode VT5, triode VT6, one end is connected with the positive pole of amplifier P2, the other end together with the output terminal of amplifier P4 as the resistance R14 of circuit input end, be serially connected in the polar capacitor C8 between the positive pole of amplifier P2 and output terminal, one end is connected with the negative pole of amplifier P2, the resistance R16 that the other end is connected with the collector electrode of triode VT5, one end is connected with the negative pole of amplifier P2, the resistance R15 that the other end is connected with the output terminal of amplifier P4, the polar capacitor C7 be in parallel with resistance R15, N pole is connected with the base stage of triode VT5, the diode D6 that P pole is connected with the emitter of triode VT5, N pole is connected with the base stage of triode VT6, the diode D7 that P pole is then connected with the base stage of triode VT5 after resistance R17, one end is connected with the negative pole of amplifier P3, the resistance R18 that the other end is connected with the P pole of diode D7, be serially connected in the resistance R19 between the negative pole of amplifier P3 and output terminal, one end is connected with the output terminal of amplifier P3, the resistance R20 that the other end is connected with the emitter of triode VT6, one end is connected with the negative pole of amplifier P4, the other end is the resistance R23 of ground connection after resistance R22 then, positive pole is connected with the negative pole of amplifier P4, the polar capacitor C9 of minus earth, and one end is connected with the collector electrode of triode VT6, the resistance R21 of the other end as circuit output end together with the output terminal of amplifier P3 forms, the negative pole of described amplifier P2 is connected with its positive pole, output terminal is then connected with the positive pole of amplifier P3, the positive pole of described amplifier P4 is connected with its output terminal, and the collector electrode of described triode VT6 is connected with the tie point of resistance R22 with resistance R23.
2. the highly sensitive engine water temperature detection system of one according to claim 1, it is characterized in that: described signal conversion module (2) is by transformer T, the front end input circlult (21) be connected with the former limit of transformer T, the current rectifying and wave filtering circuit (22) be connected with transformer T secondary, the field effect transistor trigger circuit (23) be connected with front end input circlult (21), and form with the signaling conversion circuit (24) that field effect transistor trigger circuit (23) are connected with current rectifying and wave filtering circuit (22) simultaneously.
3. the highly sensitive engine water temperature detection system of one according to claim 2, is characterized in that: described front end input circlult (21) comprises polar capacitor C2, polar capacitor C3, resistance R2 and diode D1; The N pole of described diode D1 is connected with the tap L on the former limit of transformer T, P pole is connected with field effect transistor trigger circuit (23), polar capacitor C2 and diode D1 is in parallel, the negative pole of polar capacitor C3 is connected with field effect transistor trigger circuit (23), positive pole is then connected with the P pole of diode D1 after resistance R2, and the described Same Name of Ends on the former limit of transformer T is connected with the P pole of diode D1, its non-same polarity is then connected with field effect transistor trigger circuit (23).
4. the highly sensitive engine water temperature detection system of one according to claim 3, is characterized in that: described current rectifying and wave filtering circuit (22) comprises diode bridge rectifier U, polar capacitor C4, resistance R6, diode D2; The input end of described diode bridge rectifier U is connected with non-same polarity with the Same Name of Ends of transformer T secondary respectively, its cathode output end is all connected with signaling conversion circuit (24) with cathode output end, the positive pole of polar capacitor C4 is connected with cathode output end with the cathode output end of diode bridge rectifier U respectively with negative pole, and the P pole of diode D2 is connected with the cathode output end of diode bridge rectifier U, N pole is connected with the cathode output end of diode bridge rectifier U after resistance R6.
5. the highly sensitive engine water temperature detection system of one according to claim 4, it is characterized in that: described field effect transistor trigger circuit (23) are by field effect transistor Q1, field effect transistor Q2, field effect transistor Q3, field effect transistor Q4, be serially connected in the resistance R3 between the grid of field effect transistor Q1 and source electrode, be serially connected in the resistance R4 between the grid of field effect transistor Q2 and source electrode, and the resistance R5 be serially connected between the grid of field effect transistor Q3 and source electrode forms; The source electrode of described field effect transistor Q1 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the P pole of diode D1 and the drain electrode of field effect transistor Q2 simultaneously, the source electrode of described field effect transistor Q3 is connected with the source electrode of field effect transistor Q2, it drains and be then connected with the negative pole of polar capacitor C3 and the non-same polarity on the former limit of transformer T simultaneously, and the source electrode of described field effect transistor Q4 is simultaneously with the source electrode of field effect transistor Q3 and signaling conversion circuit (24) is connected, grid is then connected with signaling conversion circuit (24), draining then is connected with the drain electrode of field effect transistor Q3.
6. the highly sensitive engine water temperature detection system of one according to claim 5, it is characterized in that: described signaling conversion circuit (24) is by triode VT1, triode VT2, triode VT3, triode VT4, unidirectional thyristor D3, one end is connected with the P pole of diode D2, the resistance R7 that the other end is connected with the collector electrode of triode VT1, positive pole is connected with the grid of field effect transistor Q4, the polar capacitor C5 that negative pole is then connected with the P pole of unidirectional thyristor D3 after resistance R8, positive pole is connected with the P pole of diode D2 after resistance R9, the polar capacitor C6 that negative pole is then connected with the N pole of unidirectional thyristor D3 after diode D4, one end is connected with the control pole of unidirectional thyristor D3, the resistance R10 that the other end is connected with the collector electrode of triode VT2, one end is connected with the P pole of diode D2, the resistance R11 that the other end is connected with the base stage of triode VT4, one end is connected with the N pole of unidirectional thyristor D3, the inductance L 1 that the other end is connected with the collector electrode of triode VT4, P pole is connected with the collector electrode of triode VT4, the diode D5 of N pole ground connection after resistance R13, and one end is connected with the base stage of triode VT3, the resistance R12 that the other end is connected with the N pole of diode D5 forms, while the emitter of described triode VT1 is connected with the source electrode of field effect transistor Q4, ground connection, base stage are connected with the positive pole of polar capacitor C6, grounded-emitter connection, the base stage of triode VT2 are then connected with the negative pole of polar capacitor C5, the N pole of described unidirectional thyristor D3 is connected with the positive pole of polar capacitor C4, the collector electrode of triode VT3 is connected with the base stage of triode VT4, grounded-emitter connection, the grounded-emitter connection of described triode VT4.
7. the highly sensitive engine water temperature detection system of the one according to any one of claim 1 ~ 6, is characterized in that: described temperature transducer (1) is HD-WZP-PT100 type cooling-water temperature sensor.
8. the highly sensitive engine water temperature detection system of one according to claim 6, is characterized in that: described field effect transistor Q1, field effect transistor Q2, field effect transistor Q3 and field effect transistor Q4 are unipolar transistor.
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| CN105424203A (en) * | 2015-11-23 | 2016-03-23 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on grid coupling amplification circuit |
| CN105444901A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Hybrid oscillation type eddy current retarder temperature alarm system based on coupling amplification |
| CN105486417A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder based on constant current source |
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| CN105509907A (en) * | 2015-11-23 | 2016-04-20 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system with high sensitivity |
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| CN105909363A (en) * | 2016-06-15 | 2016-08-31 | 内蒙古包钢钢联股份有限公司 | Water temperature control system of internal combustion locomotive |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105424203A (en) * | 2015-11-23 | 2016-03-23 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on grid coupling amplification circuit |
| CN105444901A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Hybrid oscillation type eddy current retarder temperature alarm system based on coupling amplification |
| CN105486417A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder based on constant current source |
| CN105486418A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Temperature alarm system of eddy current retarder based on voltage-constant driving |
| CN105509907A (en) * | 2015-11-23 | 2016-04-20 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system with high sensitivity |
| CN105522964A (en) * | 2015-12-11 | 2016-04-27 | 成都翰兴科技有限公司 | High-sensitivity gain type flashing reversing aid system for underground parking garage |
| CN105909363A (en) * | 2016-06-15 | 2016-08-31 | 内蒙古包钢钢联股份有限公司 | Water temperature control system of internal combustion locomotive |
| CN105909363B (en) * | 2016-06-15 | 2018-09-07 | 内蒙古包钢钢联股份有限公司 | A kind of diesel locomotive water temperature control system |
| CN110426973A (en) * | 2019-08-01 | 2019-11-08 | 天泽信息产业股份有限公司 | A kind of communication equipment runs on the method under enging cabin hot environment |
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Application publication date: 20150916 |