CN115830884B - Secondary street crossing transfer auxiliary method for same-name sites for blind people - Google Patents
Secondary street crossing transfer auxiliary method for same-name sites for blind people Download PDFInfo
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Abstract
The application discloses a blind-oriented station secondary street crossing transfer auxiliary method, which comprises the steps of firstly, laying infrastructure to obtain the secondary street crossing requirement of the blind; secondly, prompting the first street crossing square of the blind person according to the travelling direction of the blind person, calculating the street crossing time of the blind person according to the walking speed, comparing the current signal timing scheme to determine whether to adjust the green light time, and properly prolonging the residual green light time; then, after the blind person finishes the first street crossing, the phase of the signal is adjusted, so that the blind person can carry out the second street crossing preferentially; finally, after the blind person finishes the secondary street crossing, the original signal timing scheme is restored. The secondary street crossing auxiliary method for the same-name sites for the blind provided by the application can acquire the secondary street crossing requirement of the blind, improves the safety of the secondary street crossing of the blind, improves the convenience of the blind in the same-name site transfer and the convenience of the blind in public transportation, and provides a safety foundation for the remote travel of the blind.
Description
Technical Field
The application belongs to the field of pedestrian barrier-free street crossing assistance, and particularly relates to a blind-oriented secondary street crossing transfer assistance method for a same-name station.
Background
Helping the blind solve the travel problem is an important way for helping the blind to integrate into society. Because of vision loss, the blind cannot drive the vehicle by himself, and therefore public transportation becomes an important transportation mode for the blind to travel. If the blind person wants to increase the travel distance or the destination does not have a direct public transportation route, the blind person needs to transfer the public transportation route, the transfer of public transportation generally involves the transfer of the same-name stations, the same-name stations of a plurality of routes are in different streets at intersections, and the blind person needs to carry out secondary street crossing in the transfer process with high probability.
Most of the existing street crossing facilities for the blind only aim at one street crossing, and the existing common auxiliary facilities for the blind comprise street crossing buttons, buzzer prompts and voice prompts, so that when the blind carries out secondary street crossing, the blind needs to search for facilities twice, and the complexity of the blind in transferring buses is increased.
In order to improve convenience of the blind in the same-name station transfer bus, the method provides a method with assistance and priority aiming at the event that the blind needs to carry out secondary street crossing in the same-name station transfer bus. The method applies the concept of vehicle-road coordination to the blind, so that information interaction is formed among the blind, road facilities and signal lamps, and the blind is prioritized by adjusting the timing of the signal lamps.
Disclosure of Invention
Technical problems: the application provides a secondary street crossing auxiliary method for the same name station for the blind, which uses the concepts of vehicle-road coordination and signal priority to assist the blind in crossing the street, has both assistance and priority, realizes information interaction between the blind and a signal lamp, combines the walking state and the signal state of the blind to formulate a secondary street crossing scheme, assists the blind in crossing the street, reduces the influence on traffic flow, improves the safety and convenience of the secondary street crossing of the blind, and realizes barrier-free secondary street crossing of the blind in the transfer of the same name bus station.
The technical scheme is as follows: the application aims to provide a blind-oriented secondary street crossing transfer auxiliary method for a same-name website.
In order to achieve the purpose, the application provides a blind-oriented secondary street crossing transfer auxiliary method for a same-name website, which is characterized by comprising the following steps of:
step one, acquiring intersection geometric data, a signal timing scheme and a blind person crossing pace and a secondary crossing requirement;
prompting the first street crossing direction of the blind person according to the travelling direction of the blind person and the state of the signal lamp, calculating the street crossing time of the blind person according to the walking speed, and comparing the current signal timing scheme to determine whether to adjust the green light time;
step three, comparing whether the current remaining green light duration is enough for the blind to cross the street, and if the current remaining green light duration is insufficient for completing the street crossing, prolonging the current green light phase;
step four, adjusting the signal phase after the blind person finishes the first street crossing, and preferentially enabling the blind person to cross the street for the second time;
and fifthly, recovering the original signal timing scheme after the blind person completes secondary street crossing.
Further, in the first step, the method for laying infrastructure and obtaining intersection geometric data and the street crossing speed and the requirement of the blind is as follows:
(1) A built-in calculation module in the signaler acquires geometric data of an intersection and a timing scheme of the signaler, wherein the geometric data of the intersection comprises widths L of various entrance channels of the intersection k K=1, 2,3,4, signal lamp timing scheme is g= [ G ] 1 ，g 2 ，...，g n ]Wherein G is a matrix of 1×n, G i I is equal to or more than 1 and equal to or less than n and g is the green light duration of i phase i E G, the remaining green light duration G 'of the current phase' i N is the total number of phases;
(2) The communication module is arranged on the smart phone of the blind person and used for acquiring the position and the travelling direction of the blind person and measuring the street crossing pace S of the blind person;
(3) Burying signal anchor points under the punctiform blind road bricks of four blocks of the intersection, detecting that the blind people arrive at the intersection, and sending inquiry signals to the blind people;
(4) The blind person sends a secondary street crossing requirement at the smart phone end.
Further, in the second step, the first street crossing direction of the blind is prompted according to the travelling direction of the blind and the state of the signal lamp, the street crossing time of the blind is calculated according to the walking speed, and the method for determining whether to adjust the green light time according to the current signal timing scheme is as follows:
(1) Prompting the blind person to cross the street for the first time according to the current green light direction; if the traveling direction of the blind person is green light, reminding the blind person: "please cross street along current travelling direction", if the travelling direction of the blind person is red light, then remind the blind person: "please change the direction of travel to cross the street";
(2) The calculation module calculates the length T required by the blind to cross the street j And sending the result to a signal control module;
(3) Comparing the green light time length of the current phase with the time length required by the blind person to cross the street, if T j ＜g i No adjustment is needed, if T j ＞g i Then adjust to g i ＝T j 。
Further, in the third step, whether the current remaining green light time is enough for the blind to cross the street or not is compared, if the current remaining green light time is insufficient for completing the street crossing, the method for prolonging the current green light phase is as follows:
(1) The remaining green light time length g 'is compared in a calculation module' i And the street crossing time T of the blind person j If g' i ＜T j The current green light phase is prolonged, and the prolonged time T' is as follows:
T’＝T j -g’ i
(2) And sending a signal of the priority street crossing to a communication module to prompt the blind person to cross the street for the first time.
In the third step, the phase of the signal is adjusted after the blind person finishes the first street crossing, and the method for leading the blind person to carry out the second street crossing is as follows:
(1) After the signal anchor point of the second street detects that the blind person arrives, namely the blind person has completed first crossing, sending a signal to the signal control module;
(2) After the signal is received by the signal control module, the signal phase is immediately adjusted, so that the blind person can take precedence for the second crossing;
(3) And sending the signal of the priority street crossing to a communication module to prompt the blind person to cross the street for the second time.
Further, after the blind person completes the second crossing, the method for recovering the original signal timing scheme is as follows:
(1) After the arrival of the blind person is detected by the signal anchor points of the diagonal street blocks, the blind person is considered to finish the second street crossing, and signals are sent to the signal control module;
(2) The signal control module adjusts the signal timing scheme to the original state, and secondary street crossing assistance for the blind is finished.
The beneficial effects are that: compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
according to the scheme provided by the application, after the positioning module detects that the blind person approaches, a signal is sent to the communication module, so that the blind person knows that the blind person reaches an intersection, after the blind person decides to carry out secondary street crossing, the communication module is used for sending information to the calculation module, the calculation module is used for making a secondary street crossing scheme according to the neighborhood where the blind person is located and the current phase condition, the signal phase adjustment scheme is sent to the signal control module, and the signal phase is adjusted by the signal control module according to the scheme sent by the calculation module, so that the influence on the normal operation of the intersection is reduced while the blind person is helped to carry out secondary street crossing.
Drawings
FIG. 1 is a flow chart of the present application;
FIG. 2 is a schematic block diagram;
fig. 3 is a schematic diagram of a signal anchor point.
Detailed Description
The present application is further illustrated below in conjunction with specific embodiments, it being understood that these embodiments are meant to be illustrative of the application only and not limiting the scope of the application, as modifications of various equivalent embodiments of the application will fall within the scope of the application as defined in the appended claims after reading the application.
The application provides a blind-oriented secondary street crossing transfer auxiliary method for a same-name website, and the application is further described below with reference to the accompanying drawings.
Referring to fig. 1, the application provides a blind-oriented station secondary street crossing transfer auxiliary method, which comprises the following steps:
step one, acquiring intersection geometric data, a signal timing scheme and a blind person crossing pace and a secondary crossing requirement; the acquired intersection geometric data are shown in table 1, and the acquired intersection signal timing scheme is shown in table 2;
(1) A built-in calculation module in the signaler acquires geometric data of an intersection and a timing scheme of the signaler, wherein the geometric data of the intersection comprises widths L of various entrance channels of the intersection k K=1, 2,3,4, signal lamp timing scheme is g= [ G ] 1 ，g 2 ，...，g n ]Wherein G is a matrix of 1×n, G i I is equal to or more than 1 and equal to or less than n and g is the green light duration of i phase i E G, the remaining green light duration G 'of the current phase' i ；
(2) The communication module is arranged on the smart phone of the blind person and used for acquiring the position and the travelling direction of the blind person and measuring the street crossing pace S of the blind person to be 0.9m/S;
(3) Burying signal anchor points under the punctiform blind road bricks of four blocks of the intersection, detecting that the blind people arrive at the intersection, and sending inquiry signals to the blind people;
(4) The blind person sends a secondary street crossing requirement at the smart phone end.
Table 1 intersection geometry data and blind person pace
Table 2 green light time for each phase of intersection
Prompting the first street crossing direction of the blind person according to the travelling direction of the blind person and the state of the signal lamp, calculating the street crossing time of the blind person according to the walking speed, and comparing the current signal timing scheme to determine whether to adjust the green light time;
(1) Prompting the blind person to cross the street for the first time according to the current green light direction; if the traveling direction of the blind person is green light, reminding the blind person: "please cross street along current travelling direction", if the travelling direction of the blind person is red light, then remind the blind person: "please change the direction of travel to cross the street";
(2) The calculation module calculates the length T required by the blind to cross the street j (j=1, 2,3, 4) and sending the result to the signaling module;
(3) Comparing the green light time length of the current phase with the time length required by the blind person to cross the street, if T j ＜g i No adjustment is needed, if T j ＞g i Then adjust to g i ＝T j 。
According to the calculation result, the street crossing time T of the blind person j =24.4s, rounded to 25s, t j ＜g i There is no need to adjust the signal timing scheme.
Step three, comparing whether the current remaining green light duration is enough for the blind to cross the street, and if the current remaining green light duration is insufficient for completing the street crossing, prolonging the current green light phase;
(1) The remaining green light time length g 'is compared in a calculation module' i And the street crossing time T of the blind person j If g' i ＜T j The current green light phase is prolonged, and the prolonged time T' is
T’＝T j -g’ i
(2) And sending a signal of the priority street crossing to a communication module to prompt the blind person to cross the street for the first time.
Assume a current remaining green light duration g' i =20s, g' i ＜T j The current green light phase needs to be prolonged, and the prolonged time is T' =t j -g’ i =25-20=5 s, the current green light duration needs to be prolonged by 5s to meet the street crossing requirement of the blind.
Step four, adjusting the signal phase after the blind person finishes the first street crossing, and preferentially enabling the blind person to carry out the second street crossing;
(1) After the signal anchor point of the second street detects that the blind person arrives, namely the blind person has completed first crossing, sending a signal to the signal control module;
(2) After the signal is received by the signal control module, the signal phase is immediately adjusted, so that the blind person can take precedence for the second crossing;
(3) And sending the signal of the priority street crossing to a communication module to prompt the blind person to cross the street for the second time. And fifthly, recovering the original signal timing scheme after the blind person completes secondary street crossing.
(1) After the arrival of the blind person is detected by the signal anchor points of the diagonal street blocks, the blind person can be considered to finish the second street crossing, and the signal is sent to the signal control module;
(2) The signal control module adjusts the signal timing scheme to the original state, and secondary street crossing assistance for the blind is finished.
Claims (1)
1. The blind-oriented secondary street crossing transfer auxiliary method for the same-name sites is characterized by comprising the following steps of:
step one, acquiring intersection geometric data, a signal timing scheme and a blind person crossing pace and a secondary crossing requirement;
prompting the first street crossing direction of the blind person according to the travelling direction of the blind person and the state of the signal lamp, calculating the street crossing time of the blind person according to the walking speed, and comparing the current signal timing scheme to determine whether to adjust the green light time;
step three, comparing whether the current remaining green light duration is enough for the blind to cross the street, and if the current remaining green light duration is insufficient for completing the street crossing, prolonging the current green light phase;
step four, adjusting the signal phase after the blind person finishes the first street crossing, and preferentially enabling the blind person to cross the street for the second time;
step five, after the blind person finishes the secondary street crossing, recovering the original signal timing scheme;
in the first step, the method for laying infrastructure and obtaining intersection geometric data and the street crossing pace and the requirement of the blind is as follows:
(1) A built-in calculation module in the signaler acquires geometric data of an intersection and a timing scheme of the signaler, wherein the geometric data of the intersection comprises widths L of various entrance channels of the intersection k K=1, 2,3,4, signal lamp arrangementThe time scheme is G= [ G ] 1 ,g 2 ,…,g n ]Wherein G is a matrix of 1×n, G i I is equal to or more than 1 and equal to or less than n and g is the green light duration of i phase i E G, the remaining green light duration G 'of the current phase' i N is the total number of phases;
(2) The communication module is arranged on the smart phone of the blind person and used for acquiring the position and the travelling direction of the blind person and measuring the street crossing pace of the blind person as S;
(3) Burying signal anchor points under the punctiform blind road bricks of four blocks of the intersection, detecting that the blind people arrive at the intersection, and sending inquiry signals to the blind people;
(4) The blind person sends a secondary street crossing requirement at the intelligent mobile phone end;
in the second step, the first street crossing direction of the blind is prompted according to the travelling direction of the blind and the state of the signal lamp, the street crossing time of the blind is calculated according to the walking speed, and the method for determining whether to adjust the green light time according to the current signal timing scheme is as follows:
(1) Prompting the blind person to cross the street for the first time according to the current green light direction; if the traveling direction of the blind person is green light, reminding the blind person: please cross the street along the current travelling direction, if the travelling direction of the blind person is red light, the blind person is reminded of: please change the travelling direction to cross the street;
(2) The calculation module calculates the length T required by the blind to cross the street j And sending the result to a signal control module;
(3) Comparing the green light time length of the current phase with the time length required by the blind person to cross the street, if T j ＜g i No adjustment is needed, if T j ＞g i Then adjust to g i ＝T j ；
In the third step, whether the current remaining green light time is enough for the blind to cross the street or not is compared, and if the current remaining green light time is insufficient for completing the street crossing, the method for prolonging the current green light phase is as follows:
(1) The remaining green light time length g 'is compared in a calculation module' i And the street crossing time T of the blind person j If g' i <T j The current green light phase is prolonged, and the prolonged time T' is as follows:
T’＝T j -g’ i
(2) Transmitting a signal of preferential street crossing to a communication module to prompt the blind person to cross the street for the first time;
in the third step, after the blind person finishes the first street crossing, the signal phase is adjusted, and the method for leading the blind person to carry out the second street crossing is as follows:
(1) After the signal anchor point of the second street detects that the blind person arrives, namely the blind person has completed first crossing, sending a signal to the signal control module;
(2) After the signal is received by the signal control module, the signal phase is immediately adjusted, so that the blind person can take precedence for the second crossing;
(3) Transmitting a signal of the priority street crossing to a communication module to prompt the blind person to cross the street for the second time;
and step four, after the blind person finishes the second street crossing, the method for recovering the original signal timing scheme is as follows:
(1) After the arrival of the blind person is detected by the signal anchor points of the diagonal street blocks, the blind person is considered to finish the second street crossing, and signals are sent to the signal control module;
(2) The signal control module adjusts the signal timing scheme to the original state, and secondary street crossing assistance for the blind is finished.
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