CN110694199A - Fire-fighting controller for locomotive - Google Patents
Fire-fighting controller for locomotive Download PDFInfo
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- CN110694199A CN110694199A CN201911002536.6A CN201911002536A CN110694199A CN 110694199 A CN110694199 A CN 110694199A CN 201911002536 A CN201911002536 A CN 201911002536A CN 110694199 A CN110694199 A CN 110694199A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
- G08B29/043—Monitoring of the detection circuits of fire detection circuits
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Abstract
The invention discloses a fire-fighting controller for a locomotive, which comprises a microcontroller processing unit, a communication unit, a power supply unit and a fire detection unit, wherein the fire detection unit comprises a signal control circuit for receiving a data signal sent by the microcontroller processing unit and converting the data signal into two paths of first data signals and second data signals with opposite time sequences; a signal conversion circuit for receiving the first data signal and the second data signal and converting them into a detector input signal for controlling the detector; the signal processing circuit is used for receiving the input signal of the detector, performing overvoltage protection and filtering, and inputting the signal to the detector; the detector is used for receiving the detector input signal subjected to overvoltage protection and filtering processing and outputting a monitoring signal acquired by the detector; and the signal comparison circuit is used for receiving the monitoring signal, comparing the monitoring signal with a preset signal and inputting the comparison signal into the microcontroller processing unit. The locomotive fire-fighting controller has the advantages of simple structure, accurate signal transmission and the like.
Description
Technical Field
The invention relates to the field of locomotive fire control, in particular to a fire control controller for a locomotive.
Background
With the rapid development of the railway industry in China, the safety in the locomotive is emphasized, because the space in the locomotive is narrow and small, the population is dense, and the fire disaster really happens to dredge the locomotive, aiming at the problems, the timely discovery of the fire disaster is necessary, however, the structure of the existing fire-fighting controller of the locomotive is complex, and the signals are easily interfered to cause inaccurate transmission.
Disclosure of Invention
The invention provides a fire-fighting controller for a locomotive, which solves the problems of complex structure and inaccurate signal transmission of the existing locomotive fire-fighting controller.
The technical means adopted by the invention are as follows:
a fire-fighting controller for a locomotive comprises a microcontroller processing unit, a communication unit, a power supply unit and a fire detection unit, wherein the fire detection unit comprises a signal control circuit, a signal conversion circuit, a signal processing circuit, a signal comparison circuit and a detector; the signal control circuit is used for receiving the data signals sent by the microcontroller processing unit and converting the data signals into two paths of first data signals and second data signals with opposite time sequences; the signal conversion circuit is used for receiving the first data signal and the second data signal and converting the first data signal and the second data signal into a detector input signal for controlling the detector; the signal processing circuit is used for receiving the detector input signal, performing overvoltage protection and filtering, and inputting the signal to the detector; the detector is used for receiving the detector input signal subjected to overvoltage protection and filtering processing and outputting a monitoring signal acquired by the detector; and the signal comparison circuit is used for receiving the monitoring signal, comparing the monitoring signal with a preset signal and then inputting the comparison signal into the microcontroller processing unit.
Further, the signal control circuit comprises a first nand gate, a second nand gate, a third nand gate and a fourth nand gate; the first input end of the first NAND gate is connected with the data output pin of the microcontroller processing unit, and the second input end of the first NAND gate is connected with the control pin of the microcontroller processing unit; two input ends of the second NAND gate are connected with the output end of the first NAND gate; the first input end of the third NAND gate is connected with the output end of the first NAND gate, and the second input end of the third NAND gate is connected with the control pin of the microcontroller processing unit; and two input ends of the fourth NAND gate are connected with the output end of the third NAND gate.
Further, the signal conversion circuit includes a first level conversion circuit and a second level conversion circuit; the first level shift circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, a triode Q1, a triode Q2, a MOS tube Q5 and a diode D1, wherein one end of the resistor R4 is connected with the output end of the second NAND gate, the other end of the resistor R4 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with the collector of the triode Q1, the emitter of the triode Q1 is connected with a 24V power supply, the base of the triode Q1 is connected with the 24V power supply through a resistor R2, the resistor R3 is connected between the base and the collector of the triode Q1 in parallel, the gate of the MOS tube Q5 is connected with the collector of the triode Q1, the source is connected with the base of the triode Q1, and the drain 686 is connected with; the second level shift circuit comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a triode Q3, a triode Q4, a MOS transistor Q6 and a diode D2, wherein one end of the resistor R8 is connected with the output end of the fourth NAND gate, the other end of the resistor R8 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the collector of the triode Q3, the emitter of the triode Q3 is connected with a 15V power supply, the base of the triode Q3 is connected with the 15V power supply through a resistor R6, the resistor R7 is connected between the base and the collector of the triode Q3 in parallel, the gate of the MOS transistor Q6 is connected with the collector of the triode Q3, the source is connected with the base of the triode Q3, and the drain 686 is connected with.
Further, the signal processing circuit includes a bidirectional suppressor diode TVS11, a resistor R10, a resistor R11, a capacitor C1, a common mode choke T1, a capacitor C2, a varistor RV1, and a fuse F1, a cathode of the diode D1 and a cathode of the diode D2 are connected to ground through the resistor R11, one end of the bidirectional suppressor diode TVS11 is connected to ground through the resistor R11, the other end of the bidirectional suppressor diode TVS1 is connected to a cathode of the diode D1, the capacitor C1 is connected in parallel to two ends of the bidirectional suppressor diode TVS11, a rear end of the capacitor C1 is connected to the common mode choke T1, a rear end of the common mode choke T1 is connected to the capacitor C2 and the varistor RV1 in parallel, one end of the varistor RV1 is connected to a control pin of the detector through the fuse F1, and the other end of the varistor is connected to a signal output pin of the detector.
Further, the signal comparison circuit includes a bidirectional suppressor diode TVS12, a resistor R12, a resistor R13, a resistor R14, a comparator IC1D and a polarity capacitor C3, the bidirectional suppressor diode TVS12 is connected in parallel with the resistor R11, one end of the bidirectional suppressor diode TVS11 connected to the resistor R11 is further connected to one end of the resistor R12, the other end of the resistor R12 is connected to a non-inverting input end of the comparator IC1D, one end of the bidirectional suppressor diode TVS11 connected to the resistor R11 is further connected to one end of the resistor R13, the other end of the resistor R13 is connected to an inverting input end of the comparator IC1D, the inverting input end of the comparator IC1D is further connected to a positive electrode end of the polarity capacitor C3 and one end of the resistor R14, a negative electrode of the polarity capacitor C3 is grounded, and the other end of the resistor R14 is connected to a 24V power supply.
Further, the fire-fighting protection circuit comprises a controller protection circuit for protecting the fire-fighting controller when the detector is short-circuited.
Further, the controller protection circuit comprises a comparator IC1C, wherein a non-inverting input terminal of the comparator IC1C is connected with a reference voltage, an inverting input terminal of the comparator IC1C is connected with one end of the bidirectional suppressor TVS11 connected with the resistor R11, and an output terminal of the comparator IC1C is connected with a control pin of the microcontroller processing unit.
Further, the communication unit comprises an R485 communication unit, an MVB communication unit and a TRDP communication unit.
Further, the LCD device also comprises an LCD unit connected with the microcontroller processing unit.
Further, the keyboard comprises a keypad unit connected with the microcontroller processing unit.
Compared with the prior art, the fire-fighting controller for the locomotive has the advantages that the detector can obtain a signal detected by the detector under the control of the microcontroller processing unit, fire early warning is carried out, and the real-time performance and the accuracy of monitoring are guaranteed.
Drawings
FIG. 1 is a schematic diagram of a disclosed fire protection controller for a locomotive;
fig. 2 is a circuit diagram of a fire detection unit according to the present disclosure.
In the figure: 1. microcontroller processing unit, 2, communication unit, 3, fire detection unit, 30, signal control circuit, 31, signal conversion circuit, 32, signal processing circuit, 33, signal comparison circuit, 34, controller protection circuit, 4, keypad unit.
Detailed Description
Fig. 1 shows a fire-fighting controller for a locomotive, which comprises a microcontroller processing unit 1, a communication unit 2, a power supply unit and a fire detection unit 3, wherein the fire detection unit 3 comprises a signal control circuit 30, a signal conversion circuit 31, a signal processing circuit 32, a signal comparison circuit 33 and a detector (not shown in the figure); the signal control circuit 30 is configured to receive a data signal sent by the microcontroller processing unit and convert the data signal into two paths of first data signals and second data signals with opposite time sequences; the signal conversion circuit 31 is configured to receive the first data signal and the second data signal and convert the first data signal and the second data signal into a detector input signal for controlling the detector; the signal processing circuit 32 is configured to receive the detector input signal, perform overvoltage protection and filtering, and input the signal to the detector; the detector is used for receiving the detector input signal subjected to overvoltage protection and filtering processing and outputting a monitoring signal acquired by the detector; the signal comparison circuit 33 is configured to receive the monitoring signal, compare the monitoring signal with a preset signal, and input the comparison result to the microcontroller processing unit 1.
Specifically, as shown in fig. 2, the signal control circuit includes a first nand gate IC2A, a second nand gate IC2B, a third nand gate IC2D, and a fourth nand gate IC 2C; a first input end of the first nand gate IC2A is connected with a data output pin of the microcontroller processing unit 1, and a second input end of the first nand gate IC is connected with a control pin of the microcontroller processing unit 1; two input ends of the second NAND gate IC2B are both connected with the output end of the first NAND gate; a first input end of the third nand gate IC2D is connected with an output end of the first nand gate, and a second input end of the third nand gate IC is connected with a control pin of the microcontroller processing unit 1; two input ends of the fourth nand gate IC2C are connected to the output end of the third nand gate IC 2D.
The signal conversion circuit comprises a first level conversion circuit and a second level conversion circuit; the first level shift circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, a triode Q1, a triode Q2, a MOS tube Q5 and a diode D1, wherein one end of the resistor R4 is connected with the output end of the second NAND gate, the other end of the resistor R4 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with the collector of the triode Q1, the emitter of the triode Q1 is connected with a 24V power supply, the base of the triode Q1 is connected with the 24V power supply through a resistor R2, the resistor R3 is connected between the base and the collector of the triode Q1 in parallel, the gate of the MOS tube Q5 is connected with the collector of the triode Q1, the source is connected with the base of the triode Q1, and the drain 686 is connected with; the second level shift circuit comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a triode Q3, a triode Q4, a MOS transistor Q6 and a diode D2, wherein one end of the resistor R8 is connected with the output end of the fourth NAND gate, the other end of the resistor R8 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the collector of the triode Q3, the emitter of the triode Q3 is connected with a 15V power supply, the base of the triode Q3 is connected with the 15V power supply through a resistor R6, the resistor R7 is connected between the base and the collector of the triode Q3 in parallel, the gate of the MOS transistor Q6 is connected with the collector of the triode Q3, the source is connected with the base of the triode Q3, and the drain 686 is connected with.
The signal processing circuit comprises a bidirectional suppression diode TVS11, a resistor R10, a resistor R11, a capacitor C1, a common mode choke coil T1, a capacitor C2, a piezoresistor RV1 and a fuse F1, wherein the cathode of the diode D1 and the cathode of the diode D2 are connected with the ground through the resistor R11, one end of the bidirectional suppression diode TVS11 is connected with the ground through the resistor R11, the other end of the bidirectional suppression diode TVS 6356 is connected with the cathode of the diode D1, the capacitor C1 is connected in parallel with two ends of the bidirectional suppression diode TVS11, the common mode choke coil T1 is connected with the rear end of the capacitor C1, the capacitor C2 and the piezoresistor RV1 are connected with the rear end of the common mode choke coil T1 in parallel, one end of the piezoresistor RV1 is connected with a control pin of the detector through the fuse F1, and the other end of the piezoresistor RV 1.
The signal comparison circuit comprises a bidirectional suppressor diode TVS12, a resistor R12, a resistor R13, a resistor R14, a comparator IC1D and a polar capacitor C3, wherein the bidirectional suppressor diode TVS12 is connected with the resistor R11 in parallel, one end of the bidirectional suppressor diode TVS11 connected with the resistor R11 is also connected with one end of the resistor R12, the other end of the resistor R12 is connected with the same-direction input end of the comparator IC1D, one end of the bidirectional suppressor diode TVS11 connected with the resistor R11 is also connected with one end of the resistor R13, the other end of the resistor R13 is connected with the reverse-direction input end of the comparator IC1D, the reverse-direction input end of the comparator IC1D is also connected with the positive electrode end of the polar capacitor C3 and one end of the resistor R14 respectively, the negative electrode of the polar capacitor C3 is grounded, and the other end of the resistor R14 is connected with a 24V power supply.
The working principle of the invention is as follows: the microcontroller processing unit comprises a data pin (data signal in the figure) for sending data and a control pin (COM signal in the figure) for controlling whether the data signal can be sent out, when the control pin outputs a high level, the data pin can send out data, and when the control pin outputs a low level, the data pin cannot send out data. When the control pin is at high level, data sent by the data pin is converted into two paths of first data signals and second data signals with opposite time sequences through a signal control circuit consisting of four NAND gates, the first data signals act on a first level conversion circuit, the pulse amplitude of the first data signals is increased to 24V through the conversion of a triode Q1, a triode Q2 and a MOS transistor Q5, the second data signals act on a second level conversion circuit, the pulse amplitude of the second data signals is increased to 15V through the conversion of a triode Q3, a triode Q4 and a MOS transistor Q6, because the first data signals and the second data signals have opposite time sequences, the output signals of the signal conversion circuit can jump between 15V and 24V, then the first data signals are subjected to overvoltage protection of a bidirectional suppressor TVS11, filtering of a capacitor C1, a common mode choke coil T1 and a capacitor C2, and overvoltage protection of a voltage dependent resistor RV1, the detection signal is input into a data input pin (ZX + signal in the figure) of the detector through the fuse, the detector inputs the detected signal into a signal processing circuit (ZX-signal in the figure) through a data output pin, the output signal of the detector is sampled and converted into a voltage signal (V _1 in the figure) through a resistor R11 and is compared with a set reference voltage (REC signal in the figure) through a signal comparison circuit and then is input into a microcontroller processing unit, and the microcontroller processing unit can judge and analyze the received detector signal and further perform corresponding control. For example, the solenoid valve of the fire-fighting system on the locomotive is controlled, when a fire disaster happens, the fire-fighting controller can start the external solenoid valve to start the steel cylinder in time to achieve the fire-fighting effect, and the starting condition of the solenoid valve can be detected
Further, a controller protection circuit 34 is included for protecting the fire controller in case of a short circuit of the detector.
Further, the controller protection circuit 34 includes a comparator IC1C, a non-inverting input terminal of the comparator IC1C is connected to a reference voltage, an inverting input terminal is connected to one end of the bidirectional suppressor TVS11 and the resistor R11, and an output terminal of the comparator IC1C is connected to a control pin of the microcontroller processing unit.
When the detector is used for locomotive fire detection, the detector is easy to have faults such as short circuit, a controller protection circuit is arranged in the invention, when the detector has a short circuit fault, the input voltage (V _1 signal in the figure) of the reverse input end of the comparator IC1C is larger than the reference voltage (V signal in the figure) of the same-direction input end, the reference voltage is formed by a voltage division circuit (not shown in the figure), therefore, the comparator IC1C outputs low level (namely, a control pin of a microcontroller processing unit), and further, the data transmission of a data pin can be prevented.
Further, the communication unit comprises an R485 communication unit, an MVB communication unit and a TRDP communication unit, and can be used for efficiently communicating with the locomotive in real time.
Furthermore, the intelligent fire-fighting control system also comprises an LCD unit connected with the microcontroller processing unit, and the state of the fire-fighting control system can be effectively and conveniently seen through a man-machine picture.
The keyboard board unit comprises a start key, an emergency stop key, a silencing key, a return key, an up-down left key and a down-right key. The microcontroller processing unit in this embodiment is a Cortex-M3 microcontroller.
Furthermore, the microcontroller processing unit can be one path or multiple paths of fire detection units, and when one path of two bus outgoing line fails, the other path can continue to monitor, so that the redundant function is achieved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A fire-fighting controller for a locomotive, comprising a microcontroller processing unit, a communication unit, a power supply unit and a fire detection unit, characterized in that: the fire detection unit comprises a signal control circuit, a signal conversion circuit, a signal processing circuit, a signal comparison circuit and a detector;
the signal control circuit is used for receiving the data signals sent by the microcontroller processing unit and converting the data signals into two paths of first data signals and second data signals with opposite time sequences;
the signal conversion circuit is used for receiving the first data signal and the second data signal and converting the first data signal and the second data signal into a detector input signal for controlling the detector;
the signal processing circuit is used for receiving the detector input signal, performing overvoltage protection and filtering, and inputting the signal to the detector;
the detector is used for receiving the detector input signal subjected to overvoltage protection and filtering processing and outputting a monitoring signal acquired by the detector;
and the signal comparison circuit is used for receiving the monitoring signal, comparing the monitoring signal with a preset signal and then inputting the comparison signal into the microcontroller processing unit.
2. A fire protection controller for a locomotive as claimed in claim 1, wherein: the signal control circuit comprises a first NAND gate, a second NAND gate, a third NAND gate and a fourth NAND gate;
the first input end of the first NAND gate is connected with the data output pin of the microcontroller processing unit, and the second input end of the first NAND gate is connected with the control pin of the microcontroller processing unit;
two input ends of the second NAND gate are connected with the output end of the first NAND gate;
the first input end of the third NAND gate is connected with the output end of the first NAND gate, and the second input end of the third NAND gate is connected with the control pin of the microcontroller processing unit;
and two input ends of the fourth NAND gate are connected with the output end of the third NAND gate.
3. A fire protection controller for a locomotive as claimed in claim 2, wherein: the signal conversion circuit comprises a first level conversion circuit and a second level conversion circuit;
the first level shift circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, a triode Q1, a triode Q2, a MOS tube Q5 and a diode D1, wherein one end of the resistor R4 is connected with the output end of the second NAND gate, the other end of the resistor R4 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with the collector of the triode Q1, the emitter of the triode Q1 is connected with a 24V power supply, the base of the triode Q1 is connected with the 24V power supply through a resistor R2, the resistor R3 is connected between the base and the collector of the triode Q1 in parallel, the gate of the MOS tube Q5 is connected with the collector of the triode Q1, the source is connected with the base of the triode Q1, and the drain 686 is connected with;
the second level shift circuit comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a triode Q3, a triode Q4, a MOS transistor Q6 and a diode D2, wherein one end of the resistor R8 is connected with the output end of the fourth NAND gate, the other end of the resistor R8 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the collector of the triode Q3, the emitter of the triode Q3 is connected with a 15V power supply, the base of the triode Q3 is connected with the 15V power supply through a resistor R6, the resistor R7 is connected between the base and the collector of the triode Q3 in parallel, the gate of the MOS transistor Q6 is connected with the collector of the triode Q3, the source is connected with the base of the triode Q3, and the drain 686 is connected with.
4. A fire protection controller for a locomotive as claimed in claim 3, wherein: the signal processing circuit comprises a bidirectional suppression diode TVS11, a resistor R10, a resistor R11, a capacitor C1, a common mode choke coil T1, a capacitor C2, a piezoresistor RV1 and a fuse F1, wherein the cathode of the diode D1 and the cathode of the diode D2 are connected with the ground through the resistor R11, one end of the bidirectional suppression diode TVS11 is connected with the ground through the resistor R11, the other end of the bidirectional suppression diode TVS 6356 is connected with the cathode of the diode D1, the capacitor C1 is connected in parallel with two ends of the bidirectional suppression diode TVS11, the common mode choke coil T1 is connected with the rear end of the capacitor C1, the capacitor C2 and the piezoresistor RV1 are connected with the rear end of the common mode choke coil T1 in parallel, one end of the piezoresistor RV1 is connected with a control pin of the detector through the fuse F1, and the other end of the piezoresistor RV 1.
5. A fire protection controller for a locomotive as claimed in claim 4, wherein: the signal comparison circuit comprises a bidirectional suppressor diode TVS12, a resistor R12, a resistor R13, a resistor R14, a comparator IC1D and a polar capacitor C3, wherein the bidirectional suppressor diode TVS12 is connected with the resistor R11 in parallel, one end of the bidirectional suppressor diode TVS11 connected with the resistor R11 is also connected with one end of the resistor R12, the other end of the resistor R12 is connected with the same-direction input end of the comparator IC1D, one end of the bidirectional suppressor diode TVS11 connected with the resistor R11 is also connected with one end of the resistor R13, the other end of the resistor R13 is connected with the reverse-direction input end of the comparator IC1D, the reverse-direction input end of the comparator IC1D is also connected with the positive electrode end of the polar capacitor C3 and one end of the resistor R14 respectively, the negative electrode of the polar capacitor C3 is grounded, and the other end of the resistor R14 is connected with a 24V power supply.
6. A fire protection controller for a locomotive as claimed in claim 5, wherein: the fire-fighting controller is characterized by further comprising a controller protection circuit for protecting the fire-fighting controller when the detector is in short circuit.
7. A fire protection controller for a locomotive as claimed in claim 6, wherein: the controller protection circuit comprises a comparator IC1C, wherein a non-inverting input end of the comparator IC1C is connected with a reference voltage, an inverting input end of the comparator IC1C is connected with one end of the bidirectional suppressor TVS11, which is connected with the resistor R11, and an output end of the comparator IC1C is connected with a control pin of the microcontroller processing unit.
8. A fire protection controller for a locomotive as claimed in claim 1, wherein: the communication unit comprises an R485 communication unit, an MVB communication unit and a TRDP communication unit.
9. A fire protection controller for a locomotive as claimed in claim 1, wherein: and the LCD unit is connected with the microcontroller processing unit.
10. A fire protection controller for a locomotive as claimed in claim 1, wherein: the keyboard comprises a microcontroller processing unit and a keyboard board unit connected with the microcontroller processing unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051463A (en) * | 2020-08-07 | 2020-12-08 | 广州亚美智造科技有限公司 | Vehicle-mounted diagnosis system plug detection circuit and vehicle management system |
| CN113794613A (en) * | 2021-09-13 | 2021-12-14 | 中车大连机车研究所有限公司 | Direct-current carrier communication module of locomotive fire-fighting controller |
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| CN209343492U (en) * | 2018-08-21 | 2019-09-03 | 杨亦程 | A kind of fire source alarm |
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| CN112051463A (en) * | 2020-08-07 | 2020-12-08 | 广州亚美智造科技有限公司 | Vehicle-mounted diagnosis system plug detection circuit and vehicle management system |
| CN112051463B (en) * | 2020-08-07 | 2023-08-11 | 亚美智联数据科技有限公司 | Plug detection circuit of vehicle-mounted diagnosis system and vehicle management system |
| CN113794613A (en) * | 2021-09-13 | 2021-12-14 | 中车大连机车研究所有限公司 | Direct-current carrier communication module of locomotive fire-fighting controller |
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