CN212637502U - Locomotive signal host computer output information is at car detection device - Google Patents
Locomotive signal host computer output information is at car detection device Download PDFInfo
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- CN212637502U CN212637502U CN202021005622.0U CN202021005622U CN212637502U CN 212637502 U CN212637502 U CN 212637502U CN 202021005622 U CN202021005622 U CN 202021005622U CN 212637502 U CN212637502 U CN 212637502U
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Abstract
The utility model provides a locomotive signal host computer output information is at car detection device, belongs to locomotive signal host computer and measures technical field, the utility model discloses a detection of solving current locomotive signal host computer output signal only gathers the switching value signal and leads to the unreliable problem of received signal. The voltage signal output end of the locomotive signal host is connected with the voltage signal input end of the voltage division network unit through the output information voltage acquisition interface unit, the voltage division signal output end of the voltage division network unit is connected with the voltage division signal input end of the voltage conditioning circuit, the voltage signal output end of the voltage conditioning circuit is connected with the voltage signal input end of the control unit, and the voltage signal display output end of the control unit is connected with the voltage signal display input end of the display unit; the voltage switching signal input end of the voltage conditioning circuit is connected with the switching switch signal output end of the range switching unit, and the switching switch control signal input end of the range switching unit is connected with the switching switch control signal output end of the control unit. The utility model is used for carry out online detection to the cab signal host computer.
Description
Technical Field
The utility model relates to a locomotive signal host computer output information is at car detection device belongs to locomotive signal host computer and measures technical field.
Background
The signal indicating the running condition in front of train in the cab of locomotive driver is called locomotive signal, and on the premise of that the ground signal machine is main signal, the locomotive signal is auxiliary signal, it can automatically reflect display state and running condition of ground signal machine in front of train running, and can indicate train running, and can be combined with automatic train stopping device to ensure safe running of train.
The signal machine of the locomotive signal is arranged on the ground, and the locomotive signal host machine is a main part for processing the signal received by the locomotive from the ground. The frequency shift signal received by the locomotive inductor from the steel rail is processed through the main board and correspondingly displayed on a corresponding lamp position of the locomotive signal machine, and the occupancy condition information of the next section of train is provided for a driver.
The information output by the locomotive signal host is transmitted to the locomotive signal machine and the train running monitoring and recording device, which is the basis for guiding a locomotive driver to safely drive the locomotive, and the output information of the locomotive signal host can ensure that other equipment can correctly receive related information only if the output information meets the regulations. Therefore, the detection of the output information of the locomotive signal main machine is crucial.
For the detection of the output information of the locomotive signal host, in the prior art, the locomotive signal host needs to be taken off from the locomotive, and the locomotive signal host is detected by using a locomotive signal host test bench in a workshop, and the detection method has the following problems:
1. when a locomotive signal host test board is used for detection in a workshop, the influence of a locomotive signal machine and a train operation monitoring device on the output information of the locomotive signal host is not considered;
2. after the locomotive signal host is loaded, the locomotive signal host and the train operation monitoring device only acquire the switching value signals.
However, as the service life of the cab signal host increases, the output performance of the host is easily reduced due to equipment aging and equipment failure, and when the voltage of the information output by the cab signal host is lower than a specified index, systems such as a cab signal machine and a train operation monitoring device cannot correctly receive the information output by the cab signal host.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is in order to solve the detection of current locomotive signal host computer output signal and only gather the unreliable problem of switching value signal lead to received signal, provides a locomotive signal host computer output information at car detection device.
The utility model relates to a locomotive signal host output information on-vehicle detection device, which comprises an output information voltage acquisition interface unit, a voltage division network unit, a range switching unit, a voltage conditioning circuit, a control unit and a display unit;
the voltage signal output end of the locomotive signal host is connected with the voltage signal input end of the output information voltage acquisition interface unit, the voltage signal output end of the output information voltage acquisition interface unit is connected with the voltage signal input end of the voltage division network unit, the voltage division signal output end of the voltage division network unit is connected with the voltage division signal input end of the voltage conditioning circuit, the voltage signal output end of the voltage conditioning circuit is connected with the voltage signal input end of the control unit, and the voltage signal display output end of the control unit is connected with the voltage signal display input end of the display unit; the voltage switching signal input end of the voltage conditioning circuit is connected with the switching switch signal output end of the range switching unit, and the switching switch control signal input end of the range switching unit is connected with the switching switch control signal output end of the control unit.
Preferably, the system further comprises a power management unit, wherein the power management unit takes a +50V voltage signal in the output information of the cab signal host as a power input, and outputs different voltage signals to provide power for the on-board detection system.
Preferably, the system also comprises an input protection unit, and the input protection unit is connected with the output information voltage acquisition interface unit in parallel.
Preferably, the input protection unit adopts a transient diode or a piezoresistor.
Preferably, the main control chip U3 of the control unit adopts STM32F105RCT 6;
the measuring range switching unit comprises a CMOS switch U1, resistors R1-R3 and a capacitor C1;
the voltage conditioning circuit adopts an operational amplifier U2A;
the voltage division network unit comprises resistors R4-R5 and a capacitor C2;
the voltage signal output end of the output information voltage acquisition interface unit is connected with one end of a resistor R4, the other end of a resistor R4 is simultaneously connected with one end of a resistor R5 and one end of a capacitor C2, and the other end of the resistor R5 and the other end of the capacitor C2 are simultaneously connected with-50V;
the other end of the resistor R4 is simultaneously connected with the non-inverting input end of the operational amplifier U2A, the inverting input end of the operational amplifier U2A is simultaneously connected with one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is connected with-50V, the other end of the resistor R2 is connected with the S2 port of the CMOS switch U1, the other end of the resistor R3 is connected with the S1 port of the CMOS switch U1, the VSS port of the CMOS switch U1 is simultaneously connected with one end of the capacitor C1 and the GND port of the CMOS switch U1, the other end of the capacitor C1 is simultaneously connected with the VDD port and +5V of the CMOS switch U1, the NC port of the CMOS switch U1, the D port of the CMOS switch U1 and the output end of the operational amplifier U2A are simultaneously connected with the 14 th pin of the main control chip U3.
The utility model has the advantages that: the utility model provides a locomotive signal host computer output information can carry out the on-the-spot detection to locomotive signal host computer output information's magnitude of voltage at car detecting system to show that magnitude of voltage is audio-visual, and can instruct locomotive signal host computer output information's state, have following advantage:
1. the locomotive signal host can be detected on line, the detection result comprises the influence of a locomotive signal machine and a train operation monitoring device, and the state of the output information of the locomotive signal host can be accurately judged;
2. the output voltage value of the locomotive signal host can be directly detected, and the working state and the fault condition of the locomotive signal host are displayed;
3. and the performance of the locomotive signal host is early warned before the performance of the locomotive signal host is reduced to be close to the lower limit value of the standard, and an operator is instructed to maintain or replace the locomotive signal host, so that the driving safety is ensured.
Drawings
Fig. 1 is a schematic block diagram of an on-vehicle detection device for output information of a locomotive signal host according to the present invention;
fig. 2 is a schematic circuit diagram of the locomotive signal host output information on the locomotive detection device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The first embodiment is as follows: the following describes the present embodiment with reference to fig. 1 and fig. 2, and the present embodiment describes an in-vehicle detection system for output information of a locomotive signal host, which includes an output information voltage acquisition interface unit, a voltage division network unit, a range switching unit, a voltage conditioning circuit, a control unit, and a display unit;
the voltage signal output end of the locomotive signal host is connected with the voltage signal input end of the output information voltage acquisition interface unit, the voltage signal output end of the output information voltage acquisition interface unit is connected with the voltage signal input end of the voltage division network unit, the voltage division signal output end of the voltage division network unit is connected with the voltage division signal input end of the voltage conditioning circuit, the voltage signal output end of the voltage conditioning circuit is connected with the voltage signal input end of the control unit, and the voltage signal display output end of the control unit is connected with the voltage signal display input end of the display unit; the voltage switching signal input end of the voltage conditioning circuit is connected with the switching switch signal output end of the range switching unit, and the switching switch control signal input end of the range switching unit is connected with the switching switch control signal output end of the control unit.
Furthermore, the system also comprises a power supply management unit, wherein the power supply management unit takes a +50V voltage signal in the output information of the locomotive signal host as a power supply input and outputs different voltage signals to provide power for the on-board detection system.
In this embodiment, the power management unit may also use a battery to supply power, so as to isolate the power management unit from the power of the cab signal host, thereby avoiding the influence of the device fault on the cab signal host.
Still further, it still includes the input protection unit, and input protection unit and output information voltage acquisition interface unit are parallelly connected.
In this embodiment, the input protection unit detects the voltage signal output by the locomotive signal host, and when the amplitude of the voltage signal exceeds the maximum value of the measurement range, the input protection unit clamps the voltage signal to the maximum value of the measurement range.
In the embodiment, the maximum value of the measuring range is 60V, that is, when the amplitude of the voltage signal exceeds 60V, the input protection unit clamps the voltage signal to 60V, so as to avoid the damage of the post-stage device due to overvoltage.
Still further, the input protection unit adopts a transient diode or a piezoresistor.
Still further, the main control chip U3 of the control unit adopts STM32F105RCT 6;
the measuring range switching unit comprises a CMOS switch U1, resistors R1-R3 and a capacitor C1;
the voltage conditioning circuit adopts an operational amplifier U2A;
the voltage division network unit comprises resistors R4-R5 and a capacitor C2;
the voltage signal output end of the output information voltage acquisition interface unit is connected with one end of a resistor R4, the other end of a resistor R4 is simultaneously connected with one end of a resistor R5 and one end of a capacitor C2, and the other end of the resistor R5 and the other end of the capacitor C2 are simultaneously connected with-50V;
the other end of the resistor R4 is simultaneously connected with the non-inverting input end of the operational amplifier U2A, the inverting input end of the operational amplifier U2A is simultaneously connected with one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is connected with-50V, the other end of the resistor R2 is connected with the S2 port of the CMOS switch U1, the other end of the resistor R3 is connected with the S1 port of the CMOS switch U1, the VSS port of the CMOS switch U1 is simultaneously connected with one end of the capacitor C1 and the GND port of the CMOS switch U1, the other end of the capacitor C1 is simultaneously connected with the VDD port and +5V of the CMOS switch U1, the NC port of the CMOS switch U1, the D port of the CMOS switch U1 and the output end of the operational amplifier U2A are simultaneously connected with the 14 th pin of the main control chip U3.
Still further, the display unit comprises a touch module and a display module;
the display module is used for displaying the digital signal of the voltage and indicating the state of the output information of the locomotive signal host:
when the voltage signal V' is 42V-V0When the voltage is less than or equal to 60V, the output information of the locomotive signal host is in a normal state;
when the voltage signal V' is 38V < V0When the voltage is less than 42V, the output information of the locomotive signal host is in an early warning state;
when the voltage signal V' is 35V-V0When the voltage is less than or equal to 38V, the output information of the locomotive signal host is in an alarm state;
when the voltage signal V ' is V ' < 35V or V ' > 60V, the output information of the locomotive signal host is in a fault state;
the touch module is used for realizing human-computer interaction.
In this embodiment, when the voltage signal V' is 42V ≦ V0When the voltage is less than or equal to 60V, the locomotiveThe output information of the signal host is in a normal state, and the locomotive signal host can be normally used at the moment;
when the voltage signal V' is 38V < V0When the voltage is less than 42V, the output information of the locomotive signal host is in an early warning state, and the locomotive signal host needs to pay attention at the moment;
when the voltage signal V' is 35V-V0When the voltage is less than or equal to 38V, the output information of the locomotive signal host is in an alarm state, and the locomotive signal host needs to be maintained or scrapped at the moment;
when the voltage signal V ' is V ' < 35V or V ' > 60V, the output information of the locomotive signal host computer is in a fault state, and the locomotive signal host computer needs to be maintained at the moment.
Still further, the voltage signal V received by the voltage dividing network unit0Is 0V or less than V0Less than 30V, the voltage division network unit divides the voltage to a preset range of 0V-1.43V, and the voltage signal V received by the voltage division network unit0V is not less than 30V0And when the voltage is less than 60V, the voltage is divided to a preset range of 1.43V-2.85V by the voltage dividing network unit.
Further, when the voltage signal received by the voltage conditioning circuit after voltage division is 0V to 1.43V, the voltage conditioning circuit outputs the voltage signal to the control unit, the control unit controls the switch of the range switching unit to switch to S2, the voltage signal output by the voltage conditioning circuit is 0V to 2.86V, when the voltage signal received by the voltage conditioning circuit after voltage division is 1.43V to 2.85V, the voltage conditioning circuit outputs the voltage signal to the control unit, the control unit controls the switch of the range switching unit to switch to S1, and the voltage signal output by the voltage conditioning circuit is 1.5V to 3.14V.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (5)
1. The on-board detection device for the output information of the locomotive signal host is characterized by comprising an output information voltage acquisition interface unit, a voltage division network unit, a range switching unit, a voltage conditioning circuit, a control unit and a display unit;
the voltage signal output end of the locomotive signal host is connected with the voltage signal input end of the output information voltage acquisition interface unit, the voltage signal output end of the output information voltage acquisition interface unit is connected with the voltage signal input end of the voltage division network unit, the voltage division signal output end of the voltage division network unit is connected with the voltage division signal input end of the voltage conditioning circuit, the voltage signal output end of the voltage conditioning circuit is connected with the voltage signal input end of the control unit, and the voltage signal display output end of the control unit is connected with the voltage signal display input end of the display unit; the voltage switching signal input end of the voltage conditioning circuit is connected with the switching switch signal output end of the range switching unit, and the switching switch control signal input end of the range switching unit is connected with the switching switch control signal output end of the control unit.
2. The locomotive signal host machine output information on-board detection device according to claim 1, further comprising a power management unit;
the power supply management unit takes a +50V voltage signal in the output information of the locomotive signal host as a power supply input, and outputs different voltage signals to provide power for the on-board detection system.
3. The locomotive signal host machine output information on-board detection device according to claim 1, further comprising an input protection unit;
the input protection unit is connected with the output information voltage acquisition interface unit in parallel.
4. The locomotive signal host machine output information on-board detection device according to claim 3, wherein the input protection unit is a transient diode or a voltage dependent resistor.
5. The locomotive signal host computer output information on-board detection device according to claim 1, wherein the main control chip U3 of the control unit is STM32F105RCT 6;
the measuring range switching unit comprises a CMOS switch U1, resistors R1-R3 and a capacitor C1;
the voltage conditioning circuit adopts an operational amplifier U2A;
the voltage division network unit comprises resistors R4-R5 and a capacitor C2;
the voltage signal output end of the output information voltage acquisition interface unit is connected with one end of a resistor R4, the other end of a resistor R4 is simultaneously connected with one end of a resistor R5 and one end of a capacitor C2, and the other end of the resistor R5 and the other end of the capacitor C2 are simultaneously connected with-50V;
the other end of the resistor R4 is simultaneously connected with the non-inverting input end of the operational amplifier U2A, the inverting input end of the operational amplifier U2A is simultaneously connected with one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is connected with-50V, the other end of the resistor R2 is connected with the S2 port of the CMOS switch U1, the other end of the resistor R3 is connected with the S1 port of the CMOS switch U1, the VSS port of the CMOS switch U1 is simultaneously connected with one end of the capacitor C1 and the GND port of the CMOS switch U1, the other end of the capacitor C1 is simultaneously connected with the VDD port and +5V of the CMOS switch U1, the NC port of the CMOS switch U1, the D port of the CMOS switch U1 and the output end of the operational amplifier U2A are simultaneously connected with the 14 th pin of the main control chip U3.
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| CN202021005622.0U CN212637502U (en) | 2020-06-04 | 2020-06-04 | Locomotive signal host computer output information is at car detection device |
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| CN202021005622.0U CN212637502U (en) | 2020-06-04 | 2020-06-04 | Locomotive signal host computer output information is at car detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572596A (en) * | 2020-06-04 | 2020-08-25 | 哈尔滨铁路减速顶调速研究有限公司 | Locomotive signal host output information on-vehicle detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572596A (en) * | 2020-06-04 | 2020-08-25 | 哈尔滨铁路减速顶调速研究有限公司 | Locomotive signal host output information on-vehicle detection system |
| CN111572596B (en) * | 2020-06-04 | 2024-08-09 | 哈尔滨铁路减速顶调速研究有限公司 | On-vehicle detection system for locomotive signal host output information |
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