CN104793665A - Engine cooling water constant-temperature system based on signal biased amplifying - Google Patents
Engine cooling water constant-temperature system based on signal biased amplifying Download PDFInfo
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- CN104793665A CN104793665A CN201510172528.1A CN201510172528A CN104793665A CN 104793665 A CN104793665 A CN 104793665A CN 201510172528 A CN201510172528 A CN 201510172528A CN 104793665 A CN104793665 A CN 104793665A
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Abstract
The invention discloses an engine cooling water constant-temperature system based on signal biased amplifying. The engine cooling water constant-temperature system comprises an engine water tank (1), a temperature sensor (2), an electromagnetic valve (3), a water suction pump (4), a cooler (5), a filter (6), a triggering system (7), a water outgoing pipe (8), a water incoming pipe (9) and a signal biased amplifying system (10). By the engine cooling water constant-temperature system, undistorted amplifying of water temperature signals can be realized to ensure stability of signal transmission, so that stability of the cooling water constant-temperature system is improved.
Description
Technical field
The present invention relates to Engine Block Test field, specifically refer to a kind of engine cooling water constant temperature system being biased amplification process based on signal.
Background technology
People improve constantly the reliability of automobile, the requirement of the aspect such as security and green, and engine is as the heart component of automobile, its technical merit directly has influence on the performance index such as its dynamic property, economy and discharge, and the frequency of engine breakdown is also the highest.Engine performance test is the Main Means judging condition of the engine quality, and be also the important content of automotive check and maintenance job, therefore engine performance measuring is more and more subject to people's attention.
In order to ensure the functional reliability of engine, reducing its thermal load, its cooling heat dissipation must be strengthened.When Engine Block Test, main dependence cooling water system ensures that engine obtains the cooling of appropriateness in the course of the work.But traditional engine cool water system well can not remain on stationary temperature water temperature, and namely the temperature of engine cooling water is too high, this just have impact on the cooling effect of chilled water to engine, also can damage engine time serious.
Summary of the invention
The object of the invention is to solve current used engine cool water system well the defect that water temperature controls in certain temperature range, to provide a kind of and be biased the engine cooling water constant temperature system amplifying process based on signal.
Object of the present invention is by following technical proposals reality: a kind of engine cooling water constant temperature system being biased amplification process based on signal, comprises engine water tank, temperature sensor, solenoid valve, suction pump, refrigeratory, filtrator, triggering system, rising pipe and water inlet pipe; The water inlet of this refrigeratory is connected with engine water tank by rising pipe, its water delivering orifice is then connected with engine water tank by water inlet pipe, solenoid valve is then arranged on rising pipe, suction pump to be then arranged on rising pipe and between solenoid valve and refrigeratory, filtrator is arranged on water inlet pipe, temperature sensor is then arranged on bottom engine water tank, and described solenoid valve, suction pump are all connected with triggering system; Signal biased amplification disposal system is also provided with between triggering system and temperature sensor.
Further, the biased disposal system of amplifying of described signal is by field effect transistor Q, triode VT6, triode VT7, triode VT8, triode VT9, unidirectional thyristor D13, one end is connected with the drain electrode of field effect transistor Q, the resistance R15 of another termination 15V voltage, positive pole is connected with the drain electrode of field effect transistor Q, the electric capacity C11 that negative pole is connected with the base stage of triode VT7, positive pole is connected with the collector of triode VT6, the electric capacity C10 that negative pole is connected with the emitter of triode VT6, N pole is connected with the base stage of triode VT6, the voltage stabilizing diode D10 of P pole ground connection, one end is connected with the emitter of triode VT6, the resistance R16 that the other end is connected with the P pole of voltage stabilizing diode D10, one end is connected with the collector of triode VT7, the resistance R17 of other end ground connection, N pole is connected with the collector of triode VT7, the diode D12 that P pole is connected with the base stage of triode VT8 after resistance R19, one end is connected with the negative pole of electric capacity C11, the resistance R18 that the other end is connected with the P pole of diode D112, N pole is connected with the base stage of triode VT6, the diode D11 that P pole is connected with the P pole of diode D12 after electric capacity C12, positive pole is connected with the base stage of triode VT9, the electric capacity C13 that negative pole is connected with the P pole of diode D11, one end is connected with the emitter of triode VT8, the resistance R20 of other end ground connection, and negative pole ground connection after resistance R14, the electric capacity C9 of positive pole then as circuit input end together with the negative pole of electric capacity C10 forms, the grid of described field effect transistor Q is connected with the negative pole of electric capacity C9, its source electrode is then connected with the collector of triode VT6, the base stage of described triode VT7 is connected with the collector of triode VT8, its emitter is then connected with the base stage of triode VT6, the collector of described triode VT8 is connected with the collector of triode VT9, the P pole of described unidirectional thyristor D13 is connected with the collector of triode VT8, control that pole is connected with the emitter of triode VT9, N pole is connected with the negative pole of electric capacity C13.
Described triggering system is by transformer T, be arranged on the telefault L1 on the former limit of transformer T, be arranged on telefault L2 and the telefault L3 of transformer secondary, the front end signal treatment circuit be connected with telefault L1, the intermediate treatment circuit be connected with telefault L2, the sensor-triggered control circuit be connected with intermediate treatment circuit, the signal trimming circuit be connected with telefault L3, and form with the suction pump trigger control circuit that signal trimming circuit is connected with sensor-triggered control circuit simultaneously.
Described front end signal treatment circuit comprises fuse R1, diode bridge rectifier U, electric capacity C1, diode D2, and voltage stabilizing diode D1; One end of fuse R1 is connected with an input end of diode bridge rectifier U, the other end is as a signal input part of circuit, the positive pole of electric capacity C1 is connected with two output terminals of diode bridge rectifier U respectively with negative pole, and the N pole of voltage stabilizing diode D1 is connected with the positive pole of electric capacity C1, its P pole is then connected with the negative pole of electric capacity C1 after diode D2; The Same Name of Ends of described telefault L1 is connected with the positive pole of electric capacity C1, its non-same polarity is connected with the negative pole of electric capacity C1.
Described intermediate treatment circuit is by triode VT1, unidirectional thyristor D4, N pole is connected with the N pole of unidirectional thyristor D4, the diode D3 that P pole is then connected with the non-same polarity of telefault L2, the resistance R2 be in parallel with diode D3, positive pole is connected with the N pole of diode D3, the electric capacity C2 that negative pole is then connected with the P pole of unidirectional thyristor D4, one end is connected with the N pole of unidirectional thyristor D4, the inductance L 4 that the other end is connected with the emitter of triode VT1, one end is connected with the control pole of unidirectional thyristor D4, the resistance R3 that the other end is connected with the base stage of triode VT1, and one end is connected with the base stage of triode VT1, the resistance R4 that the other end is connected with signal trimming circuit forms, the P pole of described unidirectional thyristor D4 is connected with the Same Name of Ends of telefault L2, and the emitter and collector of triode VT1 is all connected with sensor-triggered control circuit, base stage is connected with the P pole of unidirectional thyristor D4.
Described sensor-triggered control circuit is by flip chip U1, triode VT2, triode VT3, one end is connected with the collector of triode VT1, the resistance R5 that the other end is connected with the VDD pin of flip chip U1, positive pole is connected with the collector of triode VT1, the electric capacity C3 that negative pole is then connected with the FB pin of flip chip U1 after relay K, N pole is connected with the base stage of triode VT3 after resistance R7, the diode D5 that P pole is connected with tie point and the suction pump trigger control circuit of relay K with electric capacity C3 simultaneously, one end is connected with the CS pin of flip chip U1, the resistance R8 that the other end is connected with the P pole of diode D5, and the resistance R6 be serially connected between the base stage of triode VT2 and emitter forms, the BD pin of described flip chip U1 is connected with the emitter of triode VT1, GND pin ground connection, FB pin are connected with the collector of triode VT3, the base stage of triode VT2 is connected with the BD pin of flip chip U1, collector is connected with the SW pin of flip chip U1, emitter is connected with the emitter of triode VT3, the emitter of triode VT3 also after the normally opened contact K-1 of relay K as signal one output terminal.
Described signal trimming circuit is by triode VT4, the diode D6 that P pole is connected with the non-same polarity of telefault L3, N pole is connected with the base stage of triode VT4, the electric capacity C4 that positive pole is connected with the N pole of diode D6, negative pole is connected with the Same Name of Ends of telefault L3, the resistance R9 be in parallel with electric capacity C4, the resistance R10 that one end is connected with the collector of triode VT4, the other end is connected with the Same Name of Ends of telefault L3, and the resistance R11 that one end is connected with resistance R4, the other end is connected with the Same Name of Ends of telefault L3 forms; The emitter of institute triode VT4 is all connected with suction pump trigger control circuit with the Same Name of Ends of telefault L3.
Described suction pump trigger control circuit is by triode VT5, bidirectional thyristor D9, N pole is connected with the base stage of triode VT5 after resistance R13, the diode D8 that P pole is then connected with the Same Name of Ends of telefault L3 after electric capacity C8, N pole is connected with the P pole of diode D8, the voltage stabilizing diode D7 that P pole is connected with the emitter of triode VT4, the electric capacity C5 be in parallel with voltage stabilizing diode D7, positive pole is connected with the P pole of voltage stabilizing diode D7, the electric capacity C6 that negative pole is connected with the first anode of bidirectional thyristor D9, one end is connected with the P pole of voltage stabilizing diode D7, the resistance R12 that the other end is connected with the base of triode VT5, and positive pole is connected with the emitter of triode VT5, negative pole forms with the electric capacity C7 that the first anode of bidirectional thyristor D9 is connected with second anode simultaneously, the control pole of described bidirectional thyristor D9 is connected with the collector of triode VT5, and the emitter of triode VT5 is connected with the P pole of voltage stabilizing diode D7 and the P pole of diode D5 simultaneously.
Described flip chip U1 is ACT364 integrated chip.
Described temperature sensor is BD-WZP-PT100 type temperature sensor.
The present invention compared with prior art has the following advantages and beneficial effect:
1, the present invention can control automatically to the water temperature in engine water tank, to guarantee that water temperature maintains within the scope of stationary temperature.
2, the present invention's temperature sensor gathers water temperature signal, and this temperature sensor reaction velocity is fast, precision is high, ensure that the control effects of chilled water constant temperature system.
3, the present invention can carry out distortionless amplification to water temperature signal, to guarantee the stability of Signal transmissions, improves the stability of chilled water constant temperature system.
4, structure of the present invention is simple, and the electronic component used is with low cost.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is signal of the present invention biased amplification disposal system electrical block diagram;
Fig. 3 is triggering system electrical block diagram 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 includes engine water tank 1, temperature sensor 2, solenoid valve 3, suction pump 4, refrigeratory 5, filtrator 6, triggering system 7, rising pipe 8, water inlet pipe 9, signal is biased amplifies disposal system 10.In order to realize the control to water temperature, the water inlet of this refrigeratory 5 is connected with engine water tank 1 by rising pipe 8, so that the high-temperature water in engine water tank 1 can be input in refrigeratory 5 by rising pipe 8.The water delivering orifice of refrigeratory 5 is then connected with engine water tank 1 by water inlet pipe 9, can be transmitted back in engine water tank 1 by water inlet pipe 9 by the cooled chilled water of refrigeratory 5.Solenoid valve 3 is arranged on rising pipe 8, and suction pump 4 to be arranged on rising pipe 8 and between solenoid valve 3 and refrigeratory 5.Filtrator 6 is arranged on water inlet pipe 9, and temperature sensor 2 is arranged on bottom engine water tank 1, and described solenoid valve 3, suction pump 4 are all connected with triggering system 7.Signal is biased the input end amplifying disposal system 10 and is connected with the output terminal of temperature sensor 2, and its output terminal is then connected with the input end of triggering system 7.
Temperature sensor 2 can detect the temperature of engine water tank 1 inner cooling water, and temperature signal is changed into voltage signal exports to that signal is biased amplifies disposal system 10.The BD-WZP-PT100 type temperature sensor that this temperature sensor 2 adopts Bo electricity Science and Technology Ltd. of Shenzhen to produce realizes.As when the temperature of chilled water is below 40 DEG C, the voltage signal that temperature sensor 2 sends is more weak, and at this moment the biased disposal system 10 of amplifying of signal does not work.After cooling water temperature is more than 40 DEG C, the voltage signal grow that temperature sensor 2 sends, at this moment the biased disposal system 10 of amplifying of signal is started working, and makes triggering system 7 obtain electric work.At this moment to be opened by triggering system 7 Controlling solenoid valve 3 and suction pump 4 starts.High-temperature cooling water in engine water tank 1 is then transported to refrigeratory 5 by rising pipe 8 and cools, cooled chilled water is transmitted back in engine water tank by water inlet pipe 9 and continues to use after filter 6 filters, and the chilled water after filter 6 filters is more clean.
Wherein signal biased amplification disposal system 10 is emphasis of the present invention, as shown in Figure 2, it is by field effect transistor Q, triode VT6, triode VT7, triode VT8, triode VT9, unidirectional thyristor D13, one end is connected with the drain electrode of field effect transistor Q, the resistance R15 of another termination 15V voltage, positive pole is connected with the drain electrode of field effect transistor Q, the electric capacity C11 that negative pole is connected with the base stage of triode VT7, positive pole is connected with the collector of triode VT6, the electric capacity C10 that negative pole is connected with the emitter of triode VT6, N pole is connected with the base stage of triode VT6, the voltage stabilizing diode D10 of P pole ground connection, one end is connected with the emitter of triode VT6, the resistance R16 that the other end is connected with the P pole of voltage stabilizing diode D10, one end is connected with the collector of triode VT7, the resistance R17 of other end ground connection, N pole is connected with the collector of triode VT7, the diode D12 that P pole is connected with the base stage of triode VT8 after resistance R19, one end is connected with the negative pole of electric capacity C11, the resistance R18 that the other end is connected with the P pole of diode D112, N pole is connected with the base stage of triode VT6, the diode D11 that P pole is connected with the P pole of diode D12 after electric capacity C12, positive pole is connected with the base stage of triode VT9, the electric capacity C13 that negative pole is connected with the P pole of diode D11, one end is connected with the emitter of triode VT8, the resistance R20 of other end ground connection, and negative pole ground connection after resistance R14, the electric capacity C9 of positive pole then as circuit input end together with the negative pole of electric capacity C10 forms.The grid of described field effect transistor Q is connected with the negative pole of electric capacity C9, its source electrode is then connected with the collector of triode VT6; The base stage of described triode VT7 is connected with the collector of triode VT8, its emitter is then connected with the base stage of triode VT6; The collector of described triode VT8 is connected with the collector of triode VT9; The P pole of described unidirectional thyristor D13 is connected with the collector of triode VT8, control that pole is connected with the emitter of triode VT9, N pole is connected with the negative pole of electric capacity C13.The P pole of described unidirectional thyristor D13 and N pole are as the output terminal of circuit.
As shown in Figure 3, this triggering system 7 is by transformer T, be arranged on the telefault L1 on the former limit of transformer T, be arranged on telefault L2 and the telefault L3 of transformer secondary, the front end signal treatment circuit 71 be connected with telefault L1, the intermediate treatment circuit 72 be connected with telefault L2, the sensor-triggered control circuit 73 be connected with intermediate treatment circuit 72, the signal trimming circuit 74 be connected with telefault L3, and form with the suction pump trigger control circuit 75 that signal trimming circuit 74 is connected with sensor-triggered control circuit 73 simultaneously.
Front end signal treatment circuit 71 wherein comprises fuse R1, diode bridge rectifier U, electric capacity C1, diode D2, and voltage stabilizing diode D1.During connection, one end of fuse R1 be connected with an input end of diode bridge rectifier U its other end then together with another input end of diode bridge rectifier U as the input end of circuit, this input end is then biased the output terminal amplifying disposal system 10 and is connected with signal.The positive pole of electric capacity C1 is connected with two output terminals of diode bridge rectifier U respectively with negative pole, and the N pole of voltage stabilizing diode D1 is connected with the positive pole of electric capacity C1, its P pole is then connected with the negative pole of electric capacity C1 after diode D2.The Same Name of Ends of described telefault L1 is connected with the positive pole of electric capacity C1, its non-same polarity is connected with the negative pole of electric capacity C1.The signal that temperature sensor 2 sends carries out boosting by transformer T again and processes after diode bridge rectifier U rectification, electric capacity C1 filtering and voltage stabilizing diode D1 voltage stabilizing.The signal exported from transformer T is then divided into two-way, and wherein a road is input to intermediate treatment circuit 72, and another road is then input to signal trimming circuit 74.
Wherein a road signal is input to sensor-triggered control circuit 73 again after intermediate treatment circuit 72 processes, this intermediate treatment circuit 72 is by triode VT1, unidirectional thyristor D4, N pole is connected with the N pole of unidirectional thyristor D4, the diode D3 that P pole is then connected with the non-same polarity of telefault L2, the resistance R2 be in parallel with diode D3, positive pole is connected with the N pole of diode D3, the electric capacity C2 that negative pole is then connected with the P pole of unidirectional thyristor D4, one end is connected with the N pole of unidirectional thyristor D4, the inductance L 4 that the other end is connected with the emitter of triode VT1, one end is connected with the control pole of unidirectional thyristor D4, the resistance R3 that the other end is connected with the base stage of triode VT1, and one end is connected with the base stage of triode VT1, the resistance R4 that the other end is connected with signal trimming circuit 74 forms.The P pole of described unidirectional thyristor D4 is connected with the Same Name of Ends of telefault L2, and the emitter and collector of triode VT1 is all connected with sensor-triggered control circuit 73, base stage is connected with the P pole of unidirectional thyristor D4.
Described sensor-triggered control circuit 73 is by flip chip U1, triode VT2, triode VT3, one end is connected with the collector of triode VT1, the resistance R5 that the other end is connected with the VDD pin of flip chip U1, positive pole is connected with the collector of triode VT1, the electric capacity C3 that negative pole is then connected with the FB pin of flip chip U1 after relay K, N pole is connected with the base stage of triode VT3 after resistance R7, the diode D5 that P pole is connected with tie point and the suction pump trigger control circuit 75 of relay K with electric capacity C3 simultaneously, one end is connected with the CS pin of flip chip U1, the resistance R8 that the other end is connected with the P pole of diode D5, and the resistance R6 be serially connected between the base stage of triode VT2 and emitter forms, the BD pin of described flip chip U1 is connected with the emitter of triode VT1, GND pin ground connection, FB pin are connected with the collector of triode VT3, the base stage of triode VT2 is connected with the BD pin of flip chip U1, collector is connected with the SW pin of flip chip U1, emitter is connected with the emitter of triode VT3, the emitter of triode VT3 also forms the first output terminal of signal after the normally opened contact K-1 of relay K together with the FB pin of flip chip U1, and this first output terminal is then connected with the signal input part of solenoid valve 3.When sensor-triggered control circuit 73 has signal to input, the FB pin of flip chip U1 exports high level, and that relay K is obtained is electric, at this moment the normally opened contact K-1 of relay K closed make solenoid valve 3 electric and open.In order to better implement the present invention, this flip chip U1 is preferably ACT364 integrated chip.
Meanwhile, another road signal is input to suction pump trigger control circuit 75 after signal trimming circuit 74 processes.And this signal trimming circuit 74 is by triode VT4, the diode D6 that P pole is connected with the non-same polarity of telefault L3, N pole is connected with the base stage of triode VT4, the electric capacity C4 that positive pole is connected with the N pole of diode D6, negative pole is connected with the Same Name of Ends of telefault L3, the resistance R9 be in parallel with electric capacity C4, the resistance R10 that one end is connected with the collector of triode VT4, the other end is connected with the Same Name of Ends of telefault L3, and the resistance R11 that one end is connected with resistance R4, the other end is connected with the Same Name of Ends of telefault L3 forms.The emitter of institute triode VT4 is all connected with suction pump trigger control circuit 75 with the Same Name of Ends of telefault L3.
Described suction pump trigger control circuit 75 is by triode VT5, bidirectional thyristor D9, N pole is connected with the base stage of triode VT5 after resistance R13, the diode D8 that P pole is then connected with the Same Name of Ends of telefault L3 after electric capacity C8, N pole is connected with the P pole of diode D8, the voltage stabilizing diode D7 that P pole is connected with the emitter of triode VT4, the electric capacity C5 be in parallel with voltage stabilizing diode D7, positive pole is connected with the P pole of voltage stabilizing diode D7, the electric capacity C6 that negative pole is connected with the first anode of bidirectional thyristor D9, one end is connected with the P pole of voltage stabilizing diode D7, the resistance R12 that the other end is connected with the base of triode VT5, and positive pole is connected with the emitter of triode VT5, negative pole forms with the electric capacity C7 that the first anode of bidirectional thyristor D9 is connected with second anode simultaneously.The control pole of described bidirectional thyristor D9 is connected with the collector of triode VT5, and the emitter of triode VT5 is connected with the P pole of voltage stabilizing diode D7 and the P pole of diode D5 simultaneously.The FB pin of flip chip U1 and the emitter of triode VT5 then form the second output terminal of signal, and this second output terminal is then connected with the signal input part of suction pump 4.When suction pump trigger control circuit 75 electric after then start suction pump 4.
As mentioned above, just well the present invention can be realized.
Claims (9)
1. be biased the engine cooling water constant temperature system amplifying process based on signal, comprise engine water tank (1), temperature sensor (2), solenoid valve (3), suction pump (4), refrigeratory (5), filtrator (6), triggering system (7), rising pipe (8) and water inlet pipe (9); The water inlet of this refrigeratory (5) is connected with engine water tank (1) by rising pipe (8), its water delivering orifice is then connected with engine water tank (1) by water inlet pipe (9), solenoid valve (3) is then arranged on rising pipe (8), suction pump (4) is then arranged on rising pipe (8) and goes up and be positioned between solenoid valve (3) and refrigeratory (5), filtrator (6) is arranged on water inlet pipe (9), temperature sensor (2) is then arranged on engine water tank (1) bottom, and described solenoid valve (3), suction pump (4) are all connected with triggering system (7); It is characterized in that, between triggering system (7) and temperature sensor (2), be also provided with signal biased amplification disposal system (10);
The biased disposal system (10) of amplifying of described signal is by field effect transistor Q, triode VT6, triode VT7, triode VT8, triode VT9, unidirectional thyristor D13, one end is connected with the drain electrode of field effect transistor Q, the resistance R15 of another termination 15V voltage, positive pole is connected with the drain electrode of field effect transistor Q, the electric capacity C11 that negative pole is connected with the base stage of triode VT7, positive pole is connected with the collector of triode VT6, the electric capacity C10 that negative pole is connected with the emitter of triode VT6, N pole is connected with the base stage of triode VT6, the voltage stabilizing diode D10 of P pole ground connection, one end is connected with the emitter of triode VT6, the resistance R16 that the other end is connected with the P pole of voltage stabilizing diode D10, one end is connected with the collector of triode VT7, the resistance R17 of other end ground connection, N pole is connected with the collector of triode VT7, the diode D12 that P pole is connected with the base stage of triode VT8 after resistance R19, one end is connected with the negative pole of electric capacity C11, the resistance R18 that the other end is connected with the P pole of diode D112, N pole is connected with the base stage of triode VT6, the diode D11 that P pole is connected with the P pole of diode D12 after electric capacity C12, positive pole is connected with the base stage of triode VT9, the electric capacity C13 that negative pole is connected with the P pole of diode D11, one end is connected with the emitter of triode VT8, the resistance R20 of other end ground connection, and negative pole ground connection after resistance R14, the electric capacity C9 of positive pole then as circuit input end together with the negative pole of electric capacity C10 forms, the grid of described field effect transistor Q is connected with the negative pole of electric capacity C9, its source electrode is then connected with the collector of triode VT6, the base stage of described triode VT7 is connected with the collector of triode VT8, its emitter is then connected with the base stage of triode VT6, the collector of described triode VT8 is connected with the collector of triode VT9, the P pole of described unidirectional thyristor D13 is connected with the collector of triode VT8, control that pole is connected with the emitter of triode VT9, N pole is connected with the negative pole of electric capacity C13.
2. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 1, it is characterized in that: described triggering system (7) is by transformer T, be arranged on the telefault L1 on the former limit of transformer T, be arranged on telefault L2 and the telefault L3 of transformer secondary, the front end signal treatment circuit (71) be connected with telefault L1, the intermediate treatment circuit (72) be connected with telefault L2, the sensor-triggered control circuit (73) be connected with intermediate treatment circuit (72), the signal trimming circuit (74) be connected with telefault L3, and form with the suction pump trigger control circuit (75) that signal trimming circuit (74) is connected with sensor-triggered control circuit (73) simultaneously.
3. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 2, it is characterized in that: described front end signal treatment circuit (71) comprises fuse R1, diode bridge rectifier U, electric capacity C1, diode D2, and voltage stabilizing diode D1; One end of fuse R1 is connected with an input end of diode bridge rectifier U, the other end is as a signal input part of circuit, the positive pole of electric capacity C1 is connected with two output terminals of diode bridge rectifier U respectively with negative pole, and the N pole of voltage stabilizing diode D1 is connected with the positive pole of electric capacity C1, its P pole is then connected with the negative pole of electric capacity C1 after diode D2; The Same Name of Ends of described telefault L1 is connected with the positive pole of electric capacity C1, its non-same polarity is connected with the negative pole of electric capacity C1.
4. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 3, it is characterized in that: described intermediate treatment circuit (72) is by triode VT1, unidirectional thyristor D4, N pole is connected with the N pole of unidirectional thyristor D4, the diode D3 that P pole is then connected with the non-same polarity of telefault L2, the resistance R2 be in parallel with diode D3, positive pole is connected with the N pole of diode D3, the electric capacity C2 that negative pole is then connected with the P pole of unidirectional thyristor D4, one end is connected with the N pole of unidirectional thyristor D4, the inductance L 4 that the other end is connected with the emitter of triode VT1, one end is connected with the control pole of unidirectional thyristor D4, the resistance R3 that the other end is connected with the base stage of triode VT1, and one end is connected with the base stage of triode VT1, the resistance R4 that the other end is connected with signal trimming circuit (74) forms, the P pole of described unidirectional thyristor D4 is connected with the Same Name of Ends of telefault L2, and the emitter and collector of triode VT1 is all connected with sensor-triggered control circuit (73), base stage is connected with the P pole of unidirectional thyristor D4.
5. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 4, it is characterized in that: described sensor-triggered control circuit (73) is by flip chip U1, triode VT2, triode VT3, one end is connected with the collector of triode VT1, the resistance R5 that the other end is connected with the VDD pin of flip chip U1, positive pole is connected with the collector of triode VT1, the electric capacity C3 that negative pole is then connected with the FB pin of flip chip U1 after relay K, N pole is connected with the base stage of triode VT3 after resistance R7, the diode D5 that P pole is connected with tie point and the suction pump trigger control circuit (75) of relay K with electric capacity C3 simultaneously, one end is connected with the CS pin of flip chip U1, the resistance R8 that the other end is connected with the P pole of diode D5, and the resistance R6 be serially connected between the base stage of triode VT2 and emitter forms, the BD pin of described flip chip U1 is connected with the emitter of triode VT1, GND pin ground connection, FB pin are connected with the collector of triode VT3, the base stage of triode VT2 is connected with the BD pin of flip chip U1, collector is connected with the SW pin of flip chip U1, emitter is connected with the emitter of triode VT3, the emitter of triode VT3 also after the normally opened contact K-1 of relay K as signal one output terminal.
6. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 5, it is characterized in that: described signal trimming circuit (74) is by triode VT4, P pole is connected with the non-same polarity of telefault L3, the diode D6 that N pole is connected with the base stage of triode VT4, positive pole is connected with the N pole of diode D6, the electric capacity C4 that negative pole is connected with the Same Name of Ends of telefault L3, the resistance R9 be in parallel with electric capacity C4, one end is connected with the collector of triode VT4, the resistance R10 that the other end is connected with the Same Name of Ends of telefault L3, and one end is connected with resistance R4, the resistance R11 that the other end is connected with the Same Name of Ends of telefault L3 forms, the emitter of institute triode VT4 is all connected with suction pump trigger control circuit (75) with the Same Name of Ends of telefault L3.
7. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 6, it is characterized in that: described suction pump trigger control circuit (75) is by triode VT5, bidirectional thyristor D9, N pole is connected with the base stage of triode VT5 after resistance R13, the diode D8 that P pole is then connected with the Same Name of Ends of telefault L3 after electric capacity C8, N pole is connected with the P pole of diode D8, the voltage stabilizing diode D7 that P pole is connected with the emitter of triode VT4, the electric capacity C5 be in parallel with voltage stabilizing diode D7, positive pole is connected with the P pole of voltage stabilizing diode D7, the electric capacity C6 that negative pole is connected with the first anode of bidirectional thyristor D9, one end is connected with the P pole of voltage stabilizing diode D7, the resistance R12 that the other end is connected with the base of triode VT5, and positive pole is connected with the emitter of triode VT5, negative pole forms with the electric capacity C7 that the first anode of bidirectional thyristor D9 is connected with second anode simultaneously, the control pole of described bidirectional thyristor D9 is connected with the collector of triode VT5, and the emitter of triode VT5 is connected with the P pole of voltage stabilizing diode D7 and the P pole of diode D5 simultaneously.
8. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to claim 5,6 or 7, is characterized in that: described flip chip U1 is ACT364 integrated chip.
9. a kind of engine cooling water constant temperature system being biased amplification process based on signal according to any one of claim 1 ~ 7, is characterized in that: described temperature sensor (2) is BD-WZP-PT100 type temperature sensor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105259952A (en) * | 2015-10-10 | 2016-01-20 | 广西百特汽车技术有限公司 | Temperature control system and temperature control method of automobile engine |
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| CN104793665B (en) | 2017-03-22 |
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Effective date of registration: 20180319 Address after: 610000 Sichuan Province, Chengdu economic and Technological Development Zone (Longquanyi District) five West City Road No. 1588 Patentee after: Sichuan state Hao Ran measurement and Control Technology Co., Ltd. Address before: 610000 Chengdu high tech Zone, Sichuan venture Road, No. 9 21-3 Patentee before: Dynamic test instrument company limited of the sincere nation in Chengdu |