CN201788047U - Detection device for resistance of ballast bed of railway - Google Patents
Detection device for resistance of ballast bed of railway Download PDFInfo
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- CN201788047U CN201788047U CN2010202692856U CN201020269285U CN201788047U CN 201788047 U CN201788047 U CN 201788047U CN 2010202692856 U CN2010202692856 U CN 2010202692856U CN 201020269285 U CN201020269285 U CN 201020269285U CN 201788047 U CN201788047 U CN 201788047U
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000006073 displacement reaction Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000007547 defect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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Abstract
The utility model aims at the defect that the detection technology of the resistance of the ballast bed of a traditional railway can not detect the resistance of the ballast bed of the railway at real time, and provides a detection device for the resistance of a ballast bed of a railway, which can detect the resistance of the ballast bed of the railway at real time. The detection device for the resistance of the ballast bed of the railway comprises a pressure sensor, a displacement sensor, an analog-to-digital converter and a main processor, wherein the analog-to-digital converter is respectively connected with the pressure sensor, the displacement sensor and the main processor. The pressure sensor and the displacement sensor collect a pressure signal and a displacement signal of the ballast bed of the railway respectively and output the collected pressure signal and the collected displacement signal to the analog-to-digital converter respectively; the analog-to-digital converter carries out analog-to-digital conversion on the received pressure signal and the received displacement signal and then transmits a digital pressure signal and a digital displacement signal after the analog-to-digital conversion to the main processor; and the main processor receives the digital pressure signal and the digital displacement signal and generates result data about the detection of the resistance of the ballast bed of the railway at real time.
Description
Technical field
The utility model relates to detection range, relates in particular to a kind of railway ballast resistance detection device.
Background technology
The detection method that existing railway ballast resistance detection technique is adopted is to want detected railway ballast resistance by the sensor sensing, by processor of single chip computer the data that sensor sensed is handled then.After having finished above-mentioned scene detection, processor of single chip computer need be taken to the place of computing machine, the data importing after afterwards processor of single chip computer being handled is carried out computational analysis in computing machine, thereby obtains corresponding results.This makes existing railway ballast resistance detection technique not possess the real-time of detection.
The utility model content
The utility model can not detect the defective of the resistance of railway ballast in real time at existing railway ballast resistance detection technique, and a kind of railway ballast resistance detection device is provided, and can be in real time the resistance of railway ballast be detected.
The utility model provides a kind of railway ballast resistance detection device, comprising: pressure transducer, displacement transducer, analog to digital converter and primary processor, and described analog to digital converter is connected with described pressure transducer, displacement transducer and primary processor respectively, wherein:
Described pressure transducer and described displacement transducer are gathered the pressure signal and the displacement signal of railway ballast respectively, and respectively pressure signal and the displacement signal that collects are outputed to described analog to digital converter;
Described analog to digital converter carries out analog to digital conversion to pressure signal and the displacement signal that receives, and sends digital pressure signal after the analog to digital conversion and digital displacement signal to described primary processor then;
Described primary processor receives described digital pressure signal and described digital displacement signal, and generates the result data that detects about the railway ballast resistance in real time.
Because the utility model railway ballast resistance detection device can be handled pressure signal and the displacement signal from pressure transducer and displacement transducer respectively in real time by primary processor, so can realize real-time detection to the railway ballast resistance, and needn't processor of single chip computer must be taken to the local of computing machine and the data importing after the processor of single chip computer processing is analyzed the testing result that just can obtain the railway ballast resistance in computing machine as prior art.
Description of drawings
Fig. 1 is the block diagram of the utility model railway ballast resistance detection device;
Fig. 2 is another block diagram of the utility model railway ballast resistance detection device;
Fig. 3 is the pin figure of an example of the analog to digital converter that adopted in the utility model railway ballast resistance detection device.
Embodiment
Below in conjunction with accompanying drawing the utility model railway ballast resistance detection device is described in detail.
As shown in Figure 1, the utility model railway ballast resistance detection device comprises: pressure transducer 101, displacement transducer 102, analog to digital converter 104 and primary processor 105, analog to digital converter 104 is connected with pressure transducer 101, displacement transducer 102 and primary processor 105 respectively, wherein: pressure transducer 101 and displacement transducer 102 are gathered the pressure signal and the displacement signal of railway ballast respectively, and respectively pressure signal and the displacement signal that collects are outputed to analog to digital converter 104; 104 pairs of pressure signals that receive of analog to digital converter and displacement signal carry out analog to digital conversion, and send digital pressure signal after the analog to digital conversion and digital displacement signal to primary processor 105 then; Primary processor 105 receives described digital pressure signal and described digital displacement signal, and generates the result data that detects about the railway ballast resistance in real time.
Because the utility model railway ballast resistance detection device can be handled pressure signal and the displacement signal from pressure transducer and displacement transducer respectively in real time by primary processor, so can realize real-time detection to the railway ballast resistance, and needn't processor of single chip computer must be taken to the local of computing machine and the data importing after the processor of single chip computer processing is analyzed the testing result that just can obtain the railway ballast resistance in computing machine as prior art.
In order can the resistance of railway ballast to be detected accurately, the number of pressure transducer 101 is 1, and the number of displacement transducer 102 is 2.Certainly, should be understood that, can adopt the more pressure transducer 101 and the displacement transducer 102 of more number.In addition, preferably, pressure transducer 101 and displacement transducer 102 are the bridge-type voltage sensor, to obtain than higher precision of conventional sensors and littler noise.
Fig. 2 is another block diagram of the utility model railway ballast resistance detection device.As shown in Figure 2, also be connected with operational amplifier 103 respectively between pressure transducer 101 and the analog to digital converter 104 and between displacement transducer 102 and analog to digital converter 104, be used for amplifying from the pressure signal of pressure transducer 101 with from the displacement signal of displacement transducer 102.Operational amplifier 103 be preferably possess high precision, the amplifier of performances such as antijamming capability is strong, low-power consumption, for example, can select instrument amplifier for use.
In addition, as shown in Figure 2, the utility model railway ballast resistance detection device can also comprise the decoding scheme 107 that is connected between primary processor 105 and the analog to digital converter 104, this decoding scheme 107 is used for the control signal from primary processor 105 is converted to chip selection signal, so that realize the selection to analog to digital converter 104.The utility model pick-up unit can also comprise the display module 106 that is connected to primary processor 105, is used for the testing result that shows that in real time primary processor 105 is obtained.
The analog to digital converter 104 that is adopted in the utility model railway ballast resistance detection device can be various types of analog to digital converters, for example streamline line style analog to digital converter, successive approximation analog to digital converter, sigma-delta pattern number converter.Fig. 3 is an example of the analog to digital converter that can adopt in the utility model railway ballast resistance detection device, and it is the successive approximation analog to digital converter of 12 8 channel parallel outputs, and model is ADS7852, is designed by Texas Instruments.As shown in Figure 3, this analog to digital converter has 32 pins, and wherein, pin one-8 is 8 tunnel analog inputs, and the application selects to receive signal from pressure transducer 101 and displacement transducer 102 respectively by pin one-3; Pin one 5-26 is the outputs of 12 bit digital, is used for the digital signal after primary processor 105 transmits analog to digital conversion; Pin one 2-14 is the address selection of 8 tunnel analog inputs, is used for selecting wherein one tunnel of 8 road input signals by logical relation; Vss is a supply voltage, V
REFBe external reference voltage, as if connecing each one of 2.2uF and 0.1uF decoupling capacitor; AGND and DGND are respectively simulation ground and digitally, and CLK is clock input (can from 200KHz to 8MHz); Pin two 8 is used to notify primary processor 105 these analog to digital converters working for busy indication output, can not carry out read-write operation; Pin 31 is a chip selection signal, and it is connected on the primary processor 105 by decoding scheme 107, is used for selecting this analog to digital converter by low level; Pin 30 is for reading control line, and it is connected on the primary processor 105, is used for cooperating chip selection signal to read the data of this analog to digital converter by low level; Pin two 7 is a write line, and it is connected on the primary processor 105, is used for cooperating chip selection signal to control this analog to digital converter by low level and begins conversion operations.
Should be understood that Fig. 3 only is an example of analog to digital converter, do not limit the application's scope, the utility model railway ballast resistance detection device can also adopt the analog to digital converter of other type, other model.
After receiving pressure signal and displacement signal, primary processor 105 can carry out Filtering Processing to pressure signal and displacement signal by low pass mean filter algorithm, and obtains testing result to the railway ballast resistance according to the relation between these signals.Wherein, the mode that obtains railway ballast resistance testing result according to the relation between pressure signal and the displacement signal can well known to a person skilled in the art that algorithm realizes by employing.
Preferably, the primary processor 105 that adopted of the utility model railway ballast resistance detection device is the controller of PC/104 framework.The controller of PC/104 framework is a kind of novel computer that development in recent years is got up, and it is integrated into the long-pending very little wiring board module of a block with a computing machine, comprises CPU, internal memory, two RS-232 serial ports, 1 parallel port 104 bus; It supports CRT/LCD to show, so that the running status of real-time display system; It has hard disk and floppy drive interface; It has the Flash electric board of a constant volume, to be used to store Control Software and related data; It can carry out advanced language programming easily, has simplified the hardware design of control system greatly, has improved reliability; It has equipped operating system, has made things convenient for software development; Its processing speed is fast, and the real-time of control system obviously is better than traditional microprocessor; In addition, according to system's needs, it can expand different interface boards easily, for example A/D converter, D/A converter, I/O interface, timer etc., thus have good extendability.Because the above-mentioned advantage that controller possessed of PC/104 framework, so the utility model railway ballast resistance detection device can write down the related data in the testing process, can so that these related datas download by USB interface, also allow the related personnel computing machine to be connected on the controller of this PC/104 framework, so that the software in the controller of this PC/104 framework is carried out on-line debugging by network interface.
Be that the controller, analog to digital converter 104 of PC/104 framework is that two 4-16 code translators are example explanation three's interactive action for analog to digital converter, the decoding scheme 107 of ADS7852 model shown in Figure 3 with primary processor 105 below.6 address wires of the controller of PC/104 framework are linked on two 4-16 code translators, thereby can obtain the low effectively output of 20 mutual exclusions; From these 20 low effectively outputs, choose then wherein 3 outputs as or the input of door, and then or the output of door be connected on the pin 31 of ADS7852 pattern number converter, realize selection to analog to digital converter 104.
Should be appreciated that this paper only is described the utility model railway ballast resistance detection device by preferred implementation, under the situation that does not deviate from the utility model scope, those skilled in the art can carry out various distortion, modification and replacement.
Claims (9)
1. a railway ballast resistance detection device is characterized in that, comprising: pressure transducer, displacement transducer, analog to digital converter and primary processor, and described analog to digital converter is connected with described pressure transducer, displacement transducer and primary processor respectively, wherein:
Described pressure transducer and described displacement transducer are gathered the pressure signal and the displacement signal of railway ballast respectively, and respectively pressure signal and the displacement signal that collects are outputed to described analog to digital converter;
Described analog to digital converter carries out analog to digital conversion to pressure signal and the displacement signal that receives, and sends digital pressure signal after the analog to digital conversion and digital displacement signal to described primary processor then;
Described primary processor receives described digital pressure signal and described digital displacement signal, and generates the result data that detects about the railway ballast resistance in real time.
2. pick-up unit according to claim 1 is characterized in that, the number of described pressure transducer is 1, and the number of described displacement transducer is 2.
3. pick-up unit according to claim 1 and 2 is characterized in that, described pressure transducer and described displacement transducer are the bridge-type voltage sensor.
4. pick-up unit according to claim 1 is characterized in that, also is being connected with operational amplifier between described pressure transducer and the described analog to digital converter and between described displacement transducer and described analog to digital converter respectively.
5. pick-up unit according to claim 4 is characterized in that, described operational amplifier is an instrument amplifier.
6. pick-up unit according to claim 1 is characterized in that, described analog to digital converter is the successive approximation analog to digital converter.
7. pick-up unit according to claim 1 is characterized in that, described primary processor is the controller of PC/104 framework.
8. pick-up unit according to claim 1 is characterized in that, described pick-up unit also comprises the decoding scheme that is connected between described primary processor and the described analog to digital converter.
9. pick-up unit according to claim 1 is characterized in that described pick-up unit also comprises the display module that is connected with described primary processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202692856U CN201788047U (en) | 2010-07-21 | 2010-07-21 | Detection device for resistance of ballast bed of railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202692856U CN201788047U (en) | 2010-07-21 | 2010-07-21 | Detection device for resistance of ballast bed of railway |
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| Publication Number | Publication Date |
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| CN201788047U true CN201788047U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202692856U Expired - Lifetime CN201788047U (en) | 2010-07-21 | 2010-07-21 | Detection device for resistance of ballast bed of railway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807583A (en) * | 2015-04-24 | 2015-07-29 | 南昌铁路通信信号厂有限公司 | Detection method and detection device for traction of point switch between turnout point rail and stock rail |
-
2010
- 2010-07-21 CN CN2010202692856U patent/CN201788047U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807583A (en) * | 2015-04-24 | 2015-07-29 | 南昌铁路通信信号厂有限公司 | Detection method and detection device for traction of point switch between turnout point rail and stock rail |
| CN104807583B (en) * | 2015-04-24 | 2017-06-06 | 南昌铁路通信信号厂有限公司 | Goat tractive force detection method and detection means between point tongue and stock rail |
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Granted publication date: 20110406 |
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| CX01 | Expiry of patent term |