TWI613110B - Tracking device positioning device and positioning method thereof - Google Patents

Description

Tracking device positioning device and positioning method thereof

The invention relates to a positioning device and a positioning method, and more particularly to a positioning device for a railway train and a positioning method thereof.

A conventional rail train positioning method is set at a distance of each segment of the track, and more than one RFID tag is installed, and a radio frequency identification reader (RFID) is disposed on each group of rail cars. Reader) and Radio Modem, whereby the radio frequency identification reader can read the radio frequency identification tag at the track and transmit it to the monitor display of the monitoring center by the radio frequency data reader when the rail car passes. Its location and speed.

However, the above positioning method has the following disadvantages:

1. If the radio frequency identification tag installed on the track is buried on the track surface, it may be affected by the ramp; if it is in a high temperature environment, it needs to be insulated and covered with water resistance.

2. The track train identification data and the RFID reader status are transmitted to the background by radio. Therefore, when the radio data is lost, the track train will not be able to identify its location except that the reader cannot be obtained.

3. When the radio frequency identification tag is buried on the railway, the radio frequency identification reader on the rail train is used for reading, which is a method for positioning the sampling point, and cannot achieve the function of continuous detection, if it is to be nearly comprehensive. Detection, it is necessary to add a large number of radio frequency identification tag embedding points, which has a huge impact on new and maintenance.

Another conventional positioning method for rail trains has been used on Taiwan's high-speed railways, mainly using a detection device mounted on the train to detect the detected objects mounted on the rail surface, directly on the computer on the train. Interpret the location of the train and inform the back-end control center via wireless.

The aforementioned positioning method has the following disadvantages:

1. If the detection point installed on the track is buried on the track surface, it may be affected by the ramp. If it is in a high temperature environment, it needs to be insulated and covered with water resistance.

2. The above positioning method is performed by using the detecting device on the rail train, which is a method for positioning the sampling point, and cannot achieve the function of continuous detection; if it is necessary to achieve near-total detection, it is necessary to increase a large number of detecting Measuring points have a huge impact on additions and maintenance.

3. The computer on the train needs to be complicated, and the computers of the individual trains are independent and need to be synchronized with the background platform.

In view of this, there is a need to propose a solution to solve the above problems.

It is an object of the present invention to provide a positioning device for a rail train.

To achieve the above object, the positioning device of the rail train of the present invention comprises: a radio frequency identification tag (RFID tag) for mounting on a train, wherein the train can travel on a track; a radio frequency identification read (RFID Reader) for receiving radio wave data from the radio frequency identification tag; a controller mounted on the train for reading driving information of the train; and a wireless signal transmitting device mounted on The train is used to send the driving information read by the controller; a wireless signal receiving device is used for receiving Receiving the driving information sent from the wireless signal transmitting device; and a server connected to the wireless RFID reader and the wireless signal receiving device, wherein the server is received according to the wireless signal receiving device The driving information and the time when the radio frequency identification reader receives the radio wave data sent by the radio frequency identification tag to calculate the position of the train on the track.

Another object of the present invention is to provide a method of positioning a rail train.

To achieve the above objective, the method for positioning a rail train of the present invention comprises: installing a radio frequency identification tag on a train, wherein the train is capable of traveling on a track; and setting a radio frequency identification reader for receiving from a radio wave data sent by the radio frequency identification tag; a controller is installed on the train to read driving information of the train; and a wireless signal transmitting device is configured to read the driving of the controller Transmitting information; setting a wireless signal receiving device for receiving the driving information sent by the wireless signal transmitting device; and setting a server, the server is connected to the wireless RFID reader and the wireless a signal receiving device, wherein the server calculates the time according to the driving information received by the wireless signal receiving device and the time when the wireless RFID reader receives the radio wave data sent by the radio frequency identification tag The position of the train on the track.

According to the positioning device and the positioning method of the rail train of the present invention, it is not necessary to install a large number of radio frequency identification tags on the track, and the current position of the train can be easily located.

The above and other objects, features, and advantages of the present invention will become more apparent from the embodiments of the invention.

110‧‧‧ Radio Frequency Identification Reader

120‧‧‧Wireless signal receiving device

151‧‧‧ Controller

152‧‧‧Wireless signal transmitting device

160‧‧‧ Radio Frequency Identification Label

170‧‧‧Server

180‧‧‧ hub

190‧‧‧Translator

195‧‧‧ train

210‧‧‧Steps

220‧‧‧Steps

230‧‧‧Steps

240‧‧‧ steps

250‧‧‧ steps

260‧‧‧Steps

1 is a system diagram of a positioning device for a rail train of the present invention.

Fig. 2 shows a positioning method of the rail train of the present invention.

Referring to Figure 1, there is shown a system diagram of a positioning device for a rail train of the present invention. The positioning device of the rail train of the present invention is equipped with a radio frequency identification reader (RFID Reader) 110 beside the track switch 190, and a plurality of wireless signal receiving devices 120 are installed near the track. The aforementioned radio frequency identification reader 110 and wireless signal receiving device 120 can be connected to a server 170 by wire or wirelessly. When the RFID reader 110 and the wireless signal receiving device 120 are connected to the server 170 by wire, the network route can be used for connection, and the hub 180 can also be utilized to make the network wiring easier. In addition, the switch 190 is electrically connected to the server 170 and can transmit its forward and reverse signals to the server 170.

According to the positioning device of the rail train of the present invention, a radio frequency identification tag (RFID Tag) is mounted on the train to be able to position the train on the track. In detail, one or more radio frequency identification tags 160 are mounted on the outer side of each train 195, wherein the radio frequency identification tags 160 can be active or passive radio frequency identification tags, preferably passive radio frequency identification tags. label. When a plurality of radio frequency identification tags 160 are installed, they can be respectively installed on the left front side, the right front side, the left rear side or the right rear side of the train 195, and avoid the bad environment, so as not to affect the reading effect.

In addition, on the train 195, for example, a vehicle having electric power and power output is mounted with a controller 151 capable of reading driving information of the train. The driving information may include information such as the traveling gear position (forward, backward or stop), the speed of the vehicle, and the walking distance. In addition, a wireless signal transmitting device 152 is further mounted on the vehicle, which is connected to the controller 151, and the wireless signal transmitting device 152 can wirelessly throw out the train driving information read by the controller 151. The wireless signal receiving device 120 disposed on the ground can receive the information thrown from the wireless signal transmitting device 152 and transmit it to the server 170.

When the positioning device of the rail train according to the present invention is in operation, the forward and reverse signals of the switch 190 are transmitted to the servo 170. When a train 195 passes through the switch 190, the operational radio wave data transmitted by the RFID reader 110 can thus be received by the passive radio frequency identification tag 160 on the train 195, the radio frequency identification tag 160 The received electric wave is converted into energy to drive an identification wafer (not shown) inside thereof. After the identification chip is driven, the RFID tag 160 transmits radio wave data containing the identification chip information. If the radio frequency identification tag 160 on the train 195 is active, it will actively transmit radio wave data containing the internally identified wafer information. After receiving the radio wave data from the radio frequency identification tag 160, the radio frequency identification reader 110 transmits it to the server 170, and the server 170 identifies which radio frequency identification tag 160 is transmitting the signal. Since the time when the radio frequency identification reader 110 receives the radio wave data is known, and the information on which train 195 the radio frequency identification tag 160 is mounted on the server 170 is recorded, it is known which one is located. Train 195 passes through the switch and the time it takes to pass the switch.

In the operation of the positioning device of the rail train according to the present invention, since the forward and reverse signals of the switch 190 have been previously transmitted to the servo 170, it can be determined which route the train 195 will travel after passing through the switch. on. Because the wireless signal transmitting device 152 is continuously thrown The instant driving information representing the train 195 is sent to the server 170, and information such as the length and geographical position of each track is also recorded in the server 170 in advance, so that the time when the radio frequency identification reader 110 receives the radio wave data is known. That is, the time when the train 195 passes through the switch 190 and uses the information such as the instantaneous vehicle speed and the walking distance included in the driving information, the position of the train 195 currently on the track can be calculated. It should be understood that the current speed of the train 195 can be obtained by converting the rotational speed of the measuring wheel, and the distance that the train 195 has traveled can be calculated from the wheel speed and the travel time. Since the method of calculating the speed of the train and the distance of the travel is well known and is not the focus of the present invention, it will not be further described.

According to the positioning device of the rail train of the present invention, the information of each track and its upper switch 190 can be recorded in advance in the server 170, and the information of the radio frequency identification reader 110 disposed beside each switch 190 is also Recorded at the server 170. In addition, the information of which train 195 is represented by each radio frequency identification tag 160 has also been recorded in the server 170. Therefore, the present invention can use the method disclosed above to calculate which position on each track the train is currently on.

Referring to FIG. 2, the positioning method of the rail train of the present invention comprises the steps of: installing a radio frequency identification tag 160 on the train 195 (step 210); and setting the radio frequency identification reader 110 to the switch 190 to Receiving radio wave data from the radio frequency identification tag 160 (step 220); installing the controller 151 on the train 195 for reading the driving information of the train 195 (step 230); installing the wireless signal transmitting device 152 on the train 195, the driving information read by the controller 151 is sent out (step 240); the wireless signal receiving device 120 is configured to receive the driving information sent by the wireless signal transmitting device 152 (step 250); A server 170 is provided, which is connected to the radio frequency identification reader 110 and the wireless signal receiving device 120, wherein the server 170 is connected according to a wireless signal. The driving information received by the receiving device 120 and the time of the radio wave data sent by the radio frequency identification tag 160 received by the radio frequency identification reader 110 are calculated to calculate the position of the train 195 on the track (step 260).

According to the positioning method of the rail train of the present invention, the switch 190 can transmit its forward and reverse signals to the servo 170, and the server 170 can thereby determine that the train 195 passes the switch according to the forward and reverse signals. After 190 is the right orbit or the anti-bit.

According to the invention, the radio frequency identification reader is installed at the entrance and exit of each track route segment, that is, at the switch, according to the characteristics of the railway transportation. If the switch can generate positive and negative electronic signals and transmit them to the server, that is, the server can know whether the train passes the orbital track or the reverse track after passing the switch, the switch only needs to be installed. A radio frequency identification reader; if the switch does not have positive and negative signals, it is necessary to install a radio frequency identification reader in the positive and negative positions of the switch, so that the server can know the train. After passing the switch, it is the right orbit or the reverse track.

According to the positioning device and the positioning method of the rail train according to the present invention, the radio frequency identification tag is installed in front of and behind the train, and avoids the bad environment, so as not to affect the reading effect. Basically, only one radio frequency identification tag is required for each train to achieve the positioning effect. If each train is equipped with multiple radio frequency identification tags, the reading effect can be increased, and the radio frequency identification tags can be debugged to determine which tag is damaged or invalid, and is convenient for the maintenance personnel to replace. In addition, if the RFID reader is installed on the left or right side of the track according to the actual situation, the radio frequency identification tag needs to be installed on both sides of the train.

The positioning device and the positioning method of the rail train according to the present invention, wherein the wireless signal transmitting device on the vehicle and the wireless signal receiving device on the ground can adopt Wi-Fi Wireless devices, and the wired network used on the ground can use Ethernet, which not only maintains the equipment easily, but also directly maintains and debugs the controller on the train. In addition, because of the characteristics of the Wi-Fi wireless network, data delay and data collision problems can be reduced. In order to allow the train driving information sent by the wireless signal transmitting device to be transmitted to the server, a plurality of wireless signal receiving devices can be arranged along the track, and both are connected to the server through the network.

According to the positioning device and the positioning method of the railway train according to the present invention, it is possible to know which train is passing through the switch through the radio frequency identification tag on the train and the radio frequency identification reader next to the switch. In addition, by using the instant driving information continuously thrown by the train, the position of the train on the track can be calculated.

According to the positioning device and the positioning method of the rail train of the present invention, it is not necessary to install a large number of radio frequency identification tags on the track, and the current position of the train can be easily located.

The present invention has been disclosed in the foregoing embodiments, and is not intended to limit the present invention. Any of the ordinary skill in the art to which the invention pertains can be modified and modified without departing from the spirit and scope of the invention. . Therefore, the scope of the invention is defined by the scope of the appended claims.

110‧‧‧ Radio Frequency Identification Reader

120‧‧‧Wireless signal receiving device

151‧‧‧ Controller

152‧‧‧Wireless signal transmitting device

160‧‧‧ Radio Frequency Identification Label

170‧‧‧Server

180‧‧‧ hub

190‧‧‧Translator

195‧‧‧ train

Claims (10)

A positioning device for a rail train, comprising: a radio frequency identification tag (RFID tag) for mounting on a train, wherein the train is capable of traveling on a track; a radio frequency identification reader (RFID reader), For receiving radio wave data from the radio frequency identification tag; a controller installed on the train for reading driving information of the train; and a wireless signal transmitting device mounted on the train for Transmitting the driving information read by the controller; a wireless signal receiving device for receiving the driving information sent by the wireless signal transmitting device; and a server connected to the wireless radio frequency identification reading And the wireless signal receiving device, wherein the server is based on the driving information received by the wireless signal receiving device and the time when the wireless RFID reader receives the radio wave data sent by the wireless radio frequency identification tag, Used to calculate the position of the train on the track. The positioning device of the rail train according to claim 1, further comprising: a switch, disposed on the track, the switch capable of transmitting its forward and reverse signals to the server, wherein The server determines, based on the forward and reverse signals, whether the train passes the orbital track or the reversed orbit after passing the switch. A positioning device for a rail train according to claim 2, wherein the radio frequency identification reader is disposed at the switch. The locating device for a rail train according to claim 1, wherein the driving information includes information about a traveling gear position, a vehicle speed, and a walking distance of the train. The locating device for a rail train according to claim 1, wherein the wireless signal transmitting device and the wireless signal receiving device are both Wi-Fi wireless devices. The locating device for a rail train according to claim 1, wherein the radio frequency identification reader and the wireless signal receiving device are connected to the server by using an Ethernet network. The positioning device of the rail train according to claim 1, further comprising another radio frequency identification tag, wherein the two radio frequency identification tags are respectively installed on the left and right sides of the train. A method for positioning a rail train includes: installing a radio frequency identification tag (RFID Tag) on a train, wherein the train is capable of traveling on a track; and providing a radio frequency identification reader (RFID Reader) for Receiving radio wave data from the radio frequency identification tag; installing a controller on the train for reading driving information of the train; and setting a wireless signal transmitting device for reading the controller Sending the driving information; setting a wireless signal receiving device for receiving the driving information sent by the wireless signal transmitting device; Providing a server connected to the radio frequency identification reader and the wireless signal receiving device, wherein the server is based on the driving information received by the wireless signal receiving device and the radio frequency identification reader The time at which the radio wave data sent by the radio frequency identification tag is received is used to calculate the position of the train on the track. The method for positioning a rail train according to claim 8, further comprising: providing a switch on the track, the switch capable of transmitting a forward and a reverse signal to the server, wherein the switch The servo system determines, based on the forward and reverse signals, whether the train passes the orbital track or the reversed orbit after passing the switch. The method for positioning a rail train according to claim 9, wherein the radio frequency identification reader is disposed at the switch.