CN102632911A - Method for detecting state of tuning area of uninsulated frequency-shift automatic block system - Google Patents
Method for detecting state of tuning area of uninsulated frequency-shift automatic block system Download PDFInfo
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- CN102632911A CN102632911A CN2012101224320A CN201210122432A CN102632911A CN 102632911 A CN102632911 A CN 102632911A CN 2012101224320 A CN2012101224320 A CN 2012101224320A CN 201210122432 A CN201210122432 A CN 201210122432A CN 102632911 A CN102632911 A CN 102632911A
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Abstract
The invention discloses a method for detecting the state of a tuning area of an uninsulated frequency-shift automatic block system, relating to a method for detecting the state of a tuning area of a track circuit. The method is designed for solving the problem that the detection on the state of a tuning area of the existing electrical resonant uninsulated frequency-shift automatic block system can not be realized. The method comprises the following steps: a transmitting apparatus sends voltage signals to a transmitting matching transformer FBP, and the matching transformer FBP carries out matching transformation on the voltage signals and then inputs the voltage signals to an uninsulated track; a receiving matching transformer JBP acquires a track surface voltage of a receiving end, carries out matching transformation on the track surface voltage, and then outputs the track surface voltage to a receiving apparatus; the receiving apparatus carries out filtering separation on the signals so as to obtain a tuning area voltage signal and a main track voltage signal; and the tuning area voltage signal is compared with the main track voltage signal so as to realize the detection on the state of the tuning area of the uninsulated track circuit. The method disclosed by the invention is suitable to be applied to the detection on state of the tuning area of the uninsulated frequency-shift automatic block system.
Description
Technical field
The present invention relates to the inspection method of the tuning zone state of a kind of naked frequency-shift automatic blocking system.
Background technology
Along with railway construction is fast-developing, improving constantly of train running speed, density is that the train operation control system of ground car Information Transmission System is used widely with the jointless track circuit.The idle track circuit of reflection train occupation has become the key link that guarantees that the onboard system security information is transmitted, and track circuit has been had higher requirement.Realize that the tuning district of electric resonant mode jointless track circuit takies, disconnected rail, the inspection of tuning equipment faulty condition be particularly important, directly influences traffic safety.The tuning zone state inspection technology that has proposed at present; Be to adopt with matching transformer (BP) in the tuning district and the parallelly connected setting of tuned cell (BA); Tuning district realizes the inspection to tuning zone state by the technology of independent short and small track circuit fixed threshold action; Also matching transformer (BP) in the tuning district and tuned cell (BA) are not separated 2 meters settings; Tuning district and main orbit be as a track circuit, changes as the float technical achievement of condition processing method of main orbit circuit thresholding with the signal in tuning district.But the tuning zone state of electric resonant mode naked frequency-shift automatic blocking system also can't be realized inspection.
Summary of the invention
The present invention can't realize the problem checked in order to solve the tuning zone state of existing electric resonant mode naked frequency-shift automatic blocking system, thereby the inspection method of the tuning zone state of a kind of naked frequency-shift automatic blocking system is provided.
The inspection method of the tuning zone state of naked frequency-shift automatic blocking system; It is based on, and the testing fixture of the tuning zone state of naked frequency-shift automatic blocking system realizes, said testing fixture based on the tuning zone state of naked frequency-shift automatic blocking system comprises picture control coil SVA, sends tuned cell FBA and receives tuned cell JBA, sends matching transformer FBP, receives matching transformer JBP, transmitting apparatus and reception facilities;
Said picture control coil SVA, transmission tuned cell FBA and reception tuned cell JBA are positioned at the tuning district of track circuit, and the tuning district of this track circuit is arranged between two naked tracks; Picture control coil SVA is arranged on the tuning neighbourhood centre of track circuit, and the two ends of said picture control coil SVA are connected with two naked tracks respectively; Send tuned cell FBA and receive the and arranged on left and right sides that tuned cell JBA is symmetricly set on picture control coil SVA, and the two ends of said tuned cell FBA are connected with two naked tracks respectively; The two ends of said reception tuned cell JBA are connected with two naked tracks respectively;
Said transmission matching transformer FBP is between picture control coil SVA and transmission tuned cell FBA, and the two ends of said transmission matching transformer FBP are connected with two naked tracks respectively; Receive matching transformer JBP between picture control coil SVA and reception tuned cell JBA, and the two ends of said reception matching transformer JBP are connected with two naked tracks respectively;
The signal sending end of transmitting apparatus is connected with the signal receiving end that sends matching transformer FBP; The signal receiving end of reception facilities is connected with the signal sending end that receives matching transformer JBP;
The distance of sending between matching transformer FBP and the picture control coil SVA is 13m; Said transmission matching transformer FBP and the distance of sending between the tuned cell FBA are 2m; The distance that receives between matching transformer JBP and the picture control coil SVA is 13m; Said reception matching transformer JBP and the distance that receives between the tuned cell JBA are 2m;
The inspection method of the tuning zone state of naked frequency-shift automatic blocking system is realized by following steps:
Step 1, employing transmitting apparatus send voltage signal and give transmission matching transformer FBP, after this matching transformer FBP transformation, are input on the naked track;
Step 2, employing receive the rail surface voltage that matching transformer JBP gathers receiving end, and said voltage is exported to reception facilities after this matching transformer JBP transformation;
Step 3, reception facilities carry out filtering to the received signal to be separated, and obtains tuning district voltage signal and main orbit voltage signal; Said tuning district voltage signal and main orbit voltage signal are compared; Realize sending the seizure condition inspection in the tuning district of disconnected rail cross-check sum in the continuity test of tuned cell FBA, the continuity test that receives tuned cell JBA, tuning district, thereby realize inspection the tuning zone state of naked frequency-shift automatic blocking system.
Described in the step 3 said tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the continuity test of transmission tuned cell FBA is:
Reception facilities judges whether tuning district voltage signal and main orbit voltage signal reduce, and tuning district voltage signal drops to transfer just often and go into more than 40% of voltage signal, if judged result is for being to judge that then sending tuned cell FBA is the broken string state; If judged result judges then that for not sending tuned cell FBA is non-broken string state; Accomplish the continuity test that sends tuned cell FBA.
Described in the step 3 said tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the continuity test of reception tuned cell JBA is:
Reception facilities judge tuning district voltage signal whether rise, judge the main orbit voltage signal whether reduce, judge tuning district voltage rise to transfer just often go into voltage signal 200% to 450% between; Be to judge that then receiving tuned cell JBA is the broken string state if aforementioned three judged results are; Otherwise, judge that receiving tuned cell JBA is non-broken string state; Accomplish the continuity test that receives tuned cell JBA.
Described in the step 3 tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the disconnected rail inspection in tuning district is:
Reception facilities judge tuning district voltage signal whether level off to 0 and the main orbit voltage signal whether reduce, if judged result is for being that then tuning district is a broken rail state; If judged result is that then tuning district is not non-broken rail state; Accomplish the disconnected rail inspection in tuning district.
Described in the step 3 tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the seizure condition inspection in tuning district is:
Reception facilities judges whether the amplitude of the reverse voltage signal in tuning district starts thresholding less than preset dead band; Judge whether the main orbit voltage signal is to be reduced to transfer just often to go into more than 85% of voltage signal; If the result of preceding two judgements is not, then tuning district is no seizure condition; Otherwise tuning district is a seizure condition, accomplishes the seizure condition inspection in tuning district.
The present invention can realize the real-time inspection to the tuning zone state of naked frequency-shift automatic blocking system, and the inspection reliability is high.
Description of drawings
Fig. 1 is the structural representation of the testing fixture of the tuning zone state of naked frequency-shift automatic blocking system among the present invention; Fig. 2 is the transmission of the forward and reverse signal of middle orbit circuit of the present invention and receives principle schematic; Fig. 3 sends the change of voltage scheme drawing of tuned cell FBA under the broken string state; Fig. 4 receives the change of voltage scheme drawing of tuned cell JBA under the broken string state; Fig. 5 is the change of voltage scheme drawing of tuning district under the broken string state; Fig. 6 receives the change of voltage scheme drawing under the tuning district seizure condition; Fig. 7 is tuning district's protection scheme drawing.
The specific embodiment
The specific embodiment one, combination Fig. 1 explain this specific embodiment; The inspection method of the tuning zone state of naked frequency-shift automatic blocking system; It is based on, and the testing fixture of the tuning zone state of naked frequency-shift automatic blocking system realizes, said testing fixture based on the tuning zone state of naked frequency-shift automatic blocking system comprises picture control coil SVA, sends tuned cell FBA and receives tuned cell JBA, sends matching transformer FBP, receives matching transformer JBP, transmitting apparatus 1 and reception facilities 2;
Said picture control coil SVA, transmission tuned cell FBA and reception tuned cell JBA are positioned at the tuning district of track circuit, and the tuning district of this track circuit is arranged between two naked tracks; Picture control coil SVA is arranged on the tuning neighbourhood centre of track circuit, and the two ends of said picture control coil SVA are connected with two naked tracks respectively; Send tuned cell FBA and receive the and arranged on left and right sides that tuned cell JBA is symmetricly set on picture control coil SVA, and the two ends of said tuned cell FBA are connected with two naked tracks respectively; The two ends of said reception tuned cell JBA are connected with two naked tracks respectively;
Said transmission matching transformer FBP is between picture control coil SVA and transmission tuned cell FBA, and the two ends of said transmission matching transformer FBP are connected with two naked tracks respectively; Receive matching transformer JBP between picture control coil SVA and reception tuned cell JBA, and the two ends of said reception matching transformer JBP are connected with two naked tracks respectively;
The signal sending end of transmitting apparatus 1 is connected with the signal receiving end that sends matching transformer FBP; The signal receiving end of reception facilities 2 is connected with the signal sending end that receives matching transformer JBP;
The distance of sending between matching transformer FBP and the picture control coil SVA is 13m; Said transmission matching transformer FBP and the distance of sending between the tuned cell FBA are 2m; The distance that receives between matching transformer JBP and the picture control coil SVA is 13m; Said reception matching transformer JBP and the distance that receives between the tuned cell JBA are 2m;
The inspection method of the tuning zone state of naked frequency-shift automatic blocking system is realized by following steps:
Step 1, employing transmitting apparatus 1 send voltage signal and give transmission matching transformer FBP, after this matching transformer FBP transformation, are input on the naked track;
Step 2, employing receive the voltage in the tuning district of matching transformer JBP Acquisition Circuit, and said voltage is exported to reception facilities 2 after this matching transformer JBP transformation;
Step 3, reception facilities 2 carry out filtering to the received signal to be separated, and obtains tuning district voltage signal and main orbit voltage signal; Said tuning district voltage signal and main orbit voltage signal are compared; Realize sending the seizure condition inspection in the tuning district of disconnected rail cross-check sum in the continuity test of tuned cell FBA, the continuity test that receives tuned cell JBA, tuning district, thereby realize inspection the tuning zone state of naked frequency-shift automatic blocking system.
Described in the step 3 said tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the continuity test of transmission tuned cell FBA is:
Reception facilities 2 judges whether tuning district voltage signal and main orbit voltage signal reduce, and tuning district voltage signal drops to transfer just often and go into more than 40% of voltage signal, if judged result is for being to judge that then sending tuned cell FBA is the broken string state; If judged result judges then that for not sending tuned cell FBA is non-broken string state; Accomplish the continuity test that sends tuned cell FBA.
Described in the step 3 said tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the continuity test of reception tuned cell JBA is:
Reception facilities judge tuning district voltage signal whether rise, judge the main orbit voltage signal whether reduce, judge tuning district voltage rise to transfer just often go into voltage signal 200% to 450% between; Be to judge that then receiving tuned cell JBA is the broken string state if aforementioned three judged results are; Otherwise, judge that receiving tuned cell JBA is non-broken string state; Accomplish the continuity test that receives tuned cell JBA.
Described in the step 3 tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the disconnected rail inspection in tuning district is:
Reception facilities 2 judge tuning district voltage signal whether level off to 0 and the main orbit voltage signal whether reduce, if judged result is for being that then tuning district is a broken rail state; If judged result is that then tuning district is not non-broken rail state; Accomplish the disconnected rail inspection in tuning district.
Described in the step 3 tuning district voltage signal and main orbit voltage signal are compared, realize that the concrete grammar of the seizure condition inspection in tuning district is:
Reception facilities 2 judges whether the amplitude of the reverse voltage signal in tuning district starts thresholding less than preset dead band; Judge whether the main orbit voltage signal is to be reduced to transfer just often to go into more than 85% of voltage signal; If the result of preceding two judgements is not, then tuning district is no seizure condition; Otherwise tuning district is a seizure condition, accomplishes the seizure condition inspection in tuning district.
Principle of work: the present invention is that the tuning zone state of a kind of electric resonant mode naked frequency-shift automatic blocking system takies inspection, disconnected rail inspection, tuning equipment trouble tracing method; The problem that makes the intrinsic dead band that exists in the tuning district of electric resonant mode jointless track circuit, disconnected rail, tuning equipment fault directly influence traffic safety has obtained solving preferably; The present invention adopts following tuning district equipment hardware setting and receives the software algorithm realization that signalc threshold is floated, and tuning district equipment hardware setting is: the tuning district total length of adjacent two track circuit intersections is 30 meters.Make the parallel resonance utmost point impedance of tuning district greater than 2.0 Ω, satisfy the characteristic of the transmission of track circuit.
The present invention utilizes and sends matching transformer FBP transmission signal in the tuning district; Track oppositely reaches and receives matching transformer JBP end through tuning district; Realize the reception of reverse signal; Because the about 35m Ω of zero impedance of receiver side tuned cell JBA is directly too little by getting tuning district reverse signal zero point, and poor anti jamming capability; The present invention receives (transmission) side matching transformer apart from receiving 2 meters settings of (transmission) side tuned cell; Make tuning district oppositely receive signal and take from the zero impedance (35m Ω) of reception tuned cell (JBA) and the terminal voltage of 2 meters rail impedance sums (30m Ω), realize that the equal level of tuning district reverse signal and main orbit forward signal receives, and has guaranteed to receive the reliable and stable of signal.It is to adapt to the twocouese operation that transmission reception side is symmetrical set;
Among the present invention, can the protection signal machine be located at transmitter side matching transformer FBP to 2 meters of SVA direction.Thereby tuning district, side and main orbit improve system safety by the function of this signal protection in the realization signal.
It is following to receive the unsteady software algorithm of signalc threshold: 1) carry out filtering to received signal and isolate tuning district signal and main orbit signal; 2) under the rear section idle condition, reception facilities is realized the inspection of tuned cell (BA) broken string and disconnected rail through the variation relation of software detection to tuning district signal and main orbit signal voltage; 3) reception facilities realizes that through the variation relation of software detection to tuning district signal and main orbit signal voltage tuning district takies the inspection of (dead band is less than 5 meters); 4) utilize that tuning district takies, the conclusion of BA broken string, disconnected rail inspection output controls track relay and falls, and realizes the protection of tuning district's inspection signal red light.
The present invention can use the DSP Digital Signal Processing, and main orbit and the tuning district signal that receives carried out high-precision amplitude computing, adopts the algorithm of the unsteady thresholding of receiving software to realize that tuning district takies (dead band is less than 5 meters), disconnected rail, BA continuity test.
The present invention can realize that electrical isolation formula jointless track circuit isolation equipment tuned cell fault causes the signal protection of district's transmission more, the broken rail protection of crisis traffic safety, the protection of dead section.Thereby improved the safety of track circuit.It is safe and reliable to have guaranteed that train operation control system ground locomotive safety information transmits.
The present invention can realize sending the continuity test of tuned cell FBA: as shown in Figure 3,1. mark is the magnitude of voltage that transfer is just often gone among Fig. 3, is 810mV; 2. be the just often main magnitude of voltage that inserts, be 678mV; 3. be the magnitude of voltage that the master inserts when sending tuned cell FBA broken string, be 415mV; 4. be the magnitude of voltage that transfer is gone into when sending tuned cell FBA broken string, be 316mV; It is thus clear that; When tuning district sends tuned cell FBA broken string, destroyed parallel resonance, owing to send side pole impedance forfeiture; The tuning district signal voltage that reception facilities is received reduces more than 40%; The saltus step that reception facilities descends to voltage through software detection can be judged the fault of sending tuned cell FBA broken string, and track relay is fallen, and realizes the red light protection.
The present invention can realize receiving the continuity test of tuned cell JBA: as shown in Figure 4,1. mark is the magnitude of voltage that transfer is gone into when receiving tuned cell JBA broken string among Fig. 4, is 3.38V; 2. be the magnitude of voltage that transfer is just often gone into, be 810mV; 3. be the just often main magnitude of voltage that inserts, be 678mV; 4. be the magnitude of voltage that transfer is gone into when receiving the broken string of tuned cell JBA, be 328mV; It is thus clear that; When tuning district receives tuned cell JBA broken string; Owing to receive tuned cell JBA the reverse signal that tuning district sends is zero impedance, the tuning district signal voltage that reception facilities is received rises 200～450%, and the saltus step that reception facilities rises to voltage through software detection can be judged the fault that receives tuned cell JBA broken string; And track relay is fallen, realize the red light protection.
The present invention can realize the disconnected rail inspection in tuning district: as shown in Figure 5,1. mark is the magnitude of voltage that the transfer just often of tuning district is gone among Fig. 5, is 810mV; 2. be the just often main magnitude of voltage that inserts, be 680mV; The magnitude of voltage that the master inserted when 3. rail was broken at right 3 meters of SVA is 466mV; The magnitude of voltage that transfer is gone into when 4. being the disconnected rail in right 3 meters of SVA is 6.2mV; It is thus clear that; Identical with tuning district's transmission tuned cell FBA disconnection fault phenomenon; The tuning district signal voltage that reception facilities receives when just breaking rail descends and is almost equal to zero; The saltus step that reception facilities descends to voltage through software detection can be judged the disconnected rail fault in tuning district, and track relay is fallen, and realizes the red light protection.
The present invention can realize that tuning district takies the inspection of (dead band is less than 5 meters): as shown in Figure 6,1. mark is the magnitude of voltage that the transfer of adjustment state is gone among Fig. 6, is 810mV; The magnitude of voltage that the master inserts during 2. for the adjustment state is 640mV; 3. be the shunt curve that the main orbit master inserts, shunt resistance is 0.15 ohm; 4. be the shunt curve that the transfer of tuning district is gone into, shunt resistance is 0.15 ohm; Flag F S (basis) is this section transmitting apparatus; JS (basis) is this section reception facilities; FS (neighbour) is an adjacent area section transmitting apparatus; JS (neighbour) is an adjacent area section reception facilities.It is thus clear that when train during near transmitter side FBA, the tuning district signal amplitude that reception facilities receives will descend gradually, and this section main orbit signal no change.When train is crossed transmitter side FBA gradually to the JBA direction operation; Tuning district signal will increase from minimum value gradually; And this section main orbit signal amplitude will diminish gradually, when train is crossed receiver side JBA and got into main orbit, receives tuning district signal and will increase to transfer gradually and go into value.And this section main orbit signal will be below being worth along separate routes, and this is the process that receives tuning district signal and the variation of this section signal.When train is through tuning district in sum, before train arrive transmitter side FBA, outside the promptly tuning district during shunt; Because of transmitter side FBA is zero impedance to this section main orbit signal, this section main orbit signal amplitude is constant, after train is crossed transmitter side FBA and got into tuning district; In the arriving signal machine during 5 meters of sides; Receiving software can detect the startup thresholding of tuning district reverse signal amplitude less than dead band inspection, and this section main orbit signal amplitude is reduced to transfer goes into 85% following two conditions of state and satisfy simultaneously, obtains the conclusion in train occupation dead band; The control track relay falls, and realizes tuning section inspection.
With the changes in amplitude of tuning district signal entry condition as the inspection of tuning dead band.The changes in amplitude of real-time inspection tuning district signal and this section main orbit signal; Deposit internal memory in; And calculate two kinds of signal averagings respectively, and calculate the startup threshold of tuning district inspection simultaneously, multiply by the startup threshold of a proportionality coefficient with the aviation value of tuning district signal as real-time tuning district inspection.Guarantee the tracking performance of the tuning district signal that reception facilities receives.To guarantee the real-time of reception facilities to the inspection of tuning district.Eliminated the intrinsic dead section of electric resonant mode jointless track circuit (dead band is less than 5 meters).
As shown in Figure 7, FS is a transmitting apparatus, and JS is a reception facilities; The present invention can also utilize that tuning district takies, the result of the result of BA broken string, disconnected rail inspection output and main orbit output carries out or logic after the track relay of this section of control fall, realize that the red light that side's tuning district's inspection main orbit takies in the signal protects.
Claims (5)
1. the inspection method of the tuning zone state of naked frequency-shift automatic blocking system; It is based on, and the testing fixture of the tuning zone state of naked frequency-shift automatic blocking system realizes, said testing fixture based on the tuning zone state of naked frequency-shift automatic blocking system comprises picture control coil (SVA), sends tuned cell (FBA) and receives tuned cell (JBA), sends matching transformer (FBP), reception matching transformer (JBP), transmitting apparatus (1) and reception facilities (2);
Said picture control coil (SVA), transmission tuned cell (FBA) and reception tuned cell (JBA) are positioned at the tuning district of track circuit, and the tuning district of this track circuit is arranged between two naked tracks; Picture control coil (SVA) is arranged on the tuning neighbourhood centre of track circuit, and the two ends of said picture control coil (SVA) are connected with two naked tracks respectively; Send tuned cell (FBA) and receive the and arranged on left and right sides that tuned cell (JBA) is symmetricly set on picture control coil (SVA), and the two ends of said tuned cell (FBA) are connected with two naked tracks respectively; The two ends of said reception tuned cell (JBA) are connected with two naked tracks respectively;
Said transmission matching transformer (FBP) is positioned at picture control coil (SVA) and sends between the tuned cell (FBA), and the two ends of said transmission matching transformer (FBP) are connected with two naked tracks respectively; Receive matching transformer (JBP) and be positioned between picture control coil (SVA) and the reception tuned cell (JBA), and the two ends of said reception matching transformer (JBP) are connected with two naked tracks respectively;
The signal sending end of transmitting apparatus (1) is connected with the signal receiving end that sends matching transformer (FBP); The signal receiving end of reception facilities (2) is connected with the signal sending end that receives matching transformer (JBP);
The distance of sending between matching transformer (FBP) and the picture control coil (SVA) is 13m; Said transmission matching transformer (FBP) and the distance of sending between the tuned cell (FBA) are 2m; The distance that receives between matching transformer (JBP) and the picture control coil (SVA) is 13m; Said reception matching transformer (JBP) and the distance that receives between the tuned cell (JBA) are 2m;
It is characterized in that: the inspection method of the tuning zone state of naked frequency-shift automatic blocking system is realized by following steps:
Step 1, employing transmitting apparatus (1) send voltage signal and give transmission matching transformer (FBP), after this matching transformer (FBP) transformation, are input on the naked track;
Step 2, employing receive the voltage in the tuning district of matching transformer (JBP) Acquisition Circuit, and said voltage is exported to reception facilities (2) after this matching transformer (JBP) transformation;
Step 3, reception facilities (2) carry out filtering to the received signal to be separated, and obtains tuning district voltage signal and main orbit voltage signal; Said tuning district voltage signal and main orbit voltage signal are compared; Realize sending the seizure condition inspection in the tuning district of disconnected rail cross-check sum in the continuity test of tuned cell (FBA), the continuity test that receives tuned cell (JBA), tuning district, thereby realize inspection the tuning zone state of naked frequency-shift automatic blocking system.
2. the inspection method of the tuning zone state of naked frequency-shift automatic blocking system according to claim 1; It is characterized in that described in the step 3 said tuning district voltage signal and main orbit voltage signal being compared, realize that the concrete grammar of the continuity test of transmission tuned cell (FBA) is:
Reception facilities (2) judges whether tuning district voltage signal and main orbit voltage signal reduce, and tuning district voltage signal drops to transfer just often and go into more than 40% of voltage signal, if judged result is for being to judge that then sending tuned cell (FBA) is the broken string state; If judged result judges then that for not sending tuned cell (FBA) is non-broken string state; Accomplish the continuity test that sends tuned cell (FBA).
3. the inspection method of the tuning zone state of naked frequency-shift automatic blocking system according to claim 1; It is characterized in that described in the step 3 said tuning district voltage signal and main orbit voltage signal being compared, realize that the concrete grammar of the continuity test of reception tuned cell (JBA) is:
Reception facilities (2) judge tuning district voltage signal whether rise, judge the main orbit voltage signal whether reduce, judge tuning district voltage rise to transfer just often go into voltage signal 200% to 450% between; Be to judge that then receiving tuned cell (JBA) is the broken string state if aforementioned three judged results are; Otherwise, judge that receiving tuned cell (JBA) is non-broken string state; Accomplish the continuity test that receives tuned cell (JBA).
4. the inspection method of the tuning zone state of naked frequency-shift automatic blocking system according to claim 1; It is characterized in that described in the step 3 tuning district voltage signal and main orbit voltage signal being compared, realize that the concrete grammar of the disconnected rail inspection in tuning district is:
Reception facilities (2) judge tuning district voltage signal whether level off to 0 and the main orbit voltage signal whether reduce, if judged result is for being that then tuning district is a broken rail state; If judged result is that then tuning district is not non-broken rail state; Accomplish the disconnected rail inspection in tuning district.
5. the inspection method of the tuning zone state of naked frequency-shift automatic blocking system according to claim 1; It is characterized in that described in the step 3 tuning district voltage signal and main orbit voltage signal being compared, realize that the concrete grammar of the seizure condition inspection in tuning district is:
Reception facilities (2) judges whether the amplitude of the reverse voltage signal in tuning district starts thresholding less than preset dead band; Judge whether the main orbit voltage signal is to be reduced to transfer just often to go into more than 85% of voltage signal; If the result of preceding two judgements is not, then tuning district is no seizure condition; Otherwise tuning district is a seizure condition, accomplishes the seizure condition inspection in tuning district.
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| CN107985131B (en) * | 2017-10-19 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Insulating joint |
| CN107914601B (en) * | 2017-10-19 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Insulating joint |
| CN108169632A (en) * | 2017-11-13 | 2018-06-15 | 北京全路通信信号研究设计院集团有限公司 | A kind of damage in insulation detection method, device and computer program |
| CN108169632B (en) * | 2017-11-13 | 2020-06-26 | 北京全路通信信号研究设计院集团有限公司 | Insulation damage detection method, device and computer program |
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Application publication date: 20120815 |