JP2014177195A - Tire pressure monitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire pressure monitor without requirement to update the protocol.SOLUTION: A tire pressure monitor includes a memory module 11, a receiver module 12, and a control module 13. The tire pressure monitor reads out a protocol according to external indication or internal discrimination. The external indication makes the control module read out a protocol from the memory module according to an external signal, and then makes the control module compare the read out protocol with a protocol of a tire pressure signal received from the receiver module. If the comparison of protocols is agreed, the tire pressure monitor decrypts the tire pressure signal. The internal discrimination makes a control module compare a different protocol memorized in the memory module with the protocol of a tire pressure signal. If the comparison of protocols is agreed, the tire pressure monitor decrypts the tire pressure signal.

Description

  The present invention relates to a tire pressure monitoring apparatus, and more particularly to a tire pressure monitoring apparatus capable of receiving tire pressure signals according to different protocols.

  A conventional tire pressure monitoring device has a tire pressure sensor mounted on each tire of a vehicle. After detecting the tire pressure of the tire, each tire sensor transmits a detection result to the tire condition receiver of the vehicle by a radio signal. The tire condition receiver receives a radio signal to determine whether each of the tires is in a normal condition. If any one of the tire sensors detects an abnormal condition, the tire condition receiver issues an audio or visual alarm to inform the vehicle driver that the tire pressure is abnormal.

  However, each tire pressure sensor and tire condition receiver of a conventional tire pressure monitoring device must use the same protocol to perform signal encoding, signal transmission and signal decoding. If either the tire pressure sensor or the tire condition receiver fails, the repairman must replace the failed tire pressure sensor or the failed tire condition receiver with a new one of the same type or the same protocol. Therefore, manufacturers or suppliers must prepare tire condition receivers that use different types of tire pressure sensors or different protocols, thus increasing both manufacturing and inventory costs. If a faulty tire pressure sensor or tire condition receiver is out of stock or discontinued, the repairman must replace the entire tire pressure monitoring device with a new one.

  Therefore, a conventional tire pressure monitoring device mounted on a vehicle tire includes a sensor, a storage device, and a transmitter. The transmitter is electrically connected to the sensor and the storage device. The sensor detects the tire pressure of the tire. The storage device stores a code including at least one data format. The transmitter of the tire pressure monitoring device converts the tire pressure information of the sensor and the code stored in the storage device into a wireless signal, and transmits the wireless signal to the external device.

  The disclosed tire pressure monitoring device analyzes and obtains a conventional tire pressure sensor protocol. The protocol is then written to a new tire pressure sensor by specialized equipment or computer equipment. In other words, the original protocol of the new tire pressure sensor is replaced with the protocol of the conventional tire pressure sensor and corresponds to a conventional external device such as a vehicle electronic control device.

  When writing a protocol to a new tire pressure sensor, the repairman must go through the setup process several times depending on the number of tires the vehicle has. In the case of a normal four-wheeled vehicle, the repairman must make the setting four times. Therefore, the installation of a series of new tire pressure sensors is time consuming.

  When writing a protocol to a new tire pressure sensor, the ID of each tire pressure sensor is usually set and stored simultaneously. The mechanic must assign a different ID to each new tire pressure sensor. If the protocol and ID are written before mounting the tire pressure sensor, the new tire pressure sensor must be mounted on the tire at a specific location according to the specific ID. Otherwise, tire pressure information cannot be recognized. If a new tire pressure sensor is installed before writing the protocol and ID, the mechanic has to travel around the vehicle to set the protocol, and the work process is complex and time consuming. Protocol and ID writing is obstructed and shielded by the metal wheel disc of the tire, which causes operational problems such as writing errors.

  In conclusion, conventional tire pressure monitoring devices need to replace the old tire pressure sensor protocol with a new one and have problems such as complex and time consuming processes and write errors caused by metal wheel discs.

  Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

  The main object of the present invention is to provide a tire pressure monitoring device in order to solve the above problems.

  The tire pressure monitoring device of the present invention includes a receiver module, a signal receiver module, a storage module, and a control module. The receiver module receives a tire pressure signal from at least one tire pressure sensor. The signal receiver module receives an external signal from an external control device. The storage module is writable and at least one protocol is written to the storage module according to an external signal. The control module is connected to the storage module, the receiver module and the signal receiver module to maintain a signal connection, and reads out one of at least one protocol according to an external instruction and is received by the receiver module. Decode tire pressure signal.

  Another embodiment of the tire pressure monitoring apparatus according to the present invention includes a receiver module, a storage module, and a control module. The receiver module receives a tire pressure signal from at least one tire pressure sensor. The storage module is writable and stores a plurality of protocols. The control module is connected to the receiver module and the storage module to maintain signal connection, and compares the protocol of the tire pressure signal received by the receiver module with the protocol stored in the storage module. . If the protocol comparisons match, the control module reads the matched protocol and decodes the tire pressure signal.

  In conclusion, the control module of the present invention receives various decoding protocols by reading out a protocol that matches the tire pressure signal received by the receiver module through external instructions or internal identification. Can do. Thus, a new tire pressure sensor can be attached to the vehicle without changing the new tire pressure sensor protocol to solve problems such as complex and time consuming work processes and writing errors.

1 is a circuit block diagram of a first embodiment of a tire pressure monitoring device according to the present invention. It is a circuit block diagram of 2nd Embodiment of the tire pressure monitoring apparatus by this invention. It is a circuit block diagram of 3rd Embodiment of the tire pressure monitoring apparatus by this invention.

  In the preferred embodiment shown in FIG. 1, the tire pressure monitoring device 10 receives tire pressure signals from at least one tire pressure sensor 20. Each of the at least one tire pressure sensor 20 detects and acquires a tire pressure value of the tire. The tire pressure signal is encoded by a built-in protocol of at least one tire pressure sensor 20, after which the at least one tire pressure sensor 20 transmits the tire pressure signal to an external device. The tire pressure monitoring device 10 receives the tire pressure signal and decodes it with a corresponding protocol.

  The tire pressure monitoring device 10 includes a storage module 11, a receiver module 12, a control module 13, and a signal receiver module 14.

  The storage module 11 is writable, and at least one protocol is written to the storage module 11 in accordance with an external signal. Alternatively, the storage module 11 stores a plurality of protocols in advance.

  The receiver module 12 receives tire pressure signals from at least one tire pressure sensor 20.

  The control module 13 is connected to the storage module 11, the receiver module 12, and the signal receiver module 14, and maintains the signal connection.

  The tire pressure monitoring device 10 compares the protocol of the tire pressure signal from the at least one tire pressure sensor 20 with the protocol stored in the storage module 11 by internal identification or external instruction. Thereafter, the tire pressure monitoring device 10 decodes the tire pressure signal.

Internal identification is that the control module 13 recognizes a tire pressure signal received by the receiver module 12 from at least one tire pressure sensor 20. The control module 13 reads a compatible protocol from the protocols stored in the storage module 11 and decodes the tire pressure signal. A preferred example of the internal identification process is as follows.
1. The tire pressure monitoring device 10 stores the first protocol and the second protocol in advance.
2. The tire pressure monitoring device 10 receives a tire pressure signal from at least one tire pressure sensor 20.
3. The tire pressure monitoring device 10 compares the tire pressure signal protocol with the first protocol or the second protocol.
4). If the tire pressure signal protocol corresponds to the first protocol or the second protocol, the tire pressure signal is decoded by the first protocol or the second protocol.

An external instruction is that after the receiver module 12 receives a tire pressure signal from at least one tire pressure sensor 20 according to an external signal, the control module 13 reads the protocol stored in the storage module 11 according to the external signal and reads the tire pressure signal. That is, the signal is decoded. A suitable example of the external instruction process is as follows.
1. The tire pressure monitoring device 10 receives an external signal from an external control device including at least one protocol and an instruction to write the at least one protocol in the storage module 11.
2. The tire pressure monitoring device 10 receives a tire pressure signal from at least one tire pressure sensor 20.
3. The tire pressure monitoring device 10 receives an external signal from the external control device including an instruction to read out one of the at least one protocol, and outputs the tire pressure signal from the at least one tire pressure sensor 20. Decrypt.

Another suitable example of the external instruction process is as follows.
1. The tire pressure monitoring device 10 stores the first protocol and the second protocol in advance.
2. An external signal is provided, and the external signal includes an instruction to control the tire pressure monitoring device 10 to read the first protocol or the second protocol. The tire pressure monitoring device 10 reads the first protocol or the second protocol according to the external signal.
3. The tire pressure monitoring device 10 receives a tire pressure signal from at least one tire pressure sensor 20.
4). The tire pressure monitoring device 10 compares the protocol of the tire pressure signal with the first protocol or the second protocol.
5. If the tire pressure signal protocol corresponds to the first protocol or the second protocol, the tire pressure signal is decoded by the first protocol or the second protocol.

Another suitable example of the external instruction process is as follows.
1. An external signal is provided, the external signal including a first protocol or a second protocol and a storage instruction corresponding to the first protocol or the second protocol. The tire pressure monitoring device 10 receives the external signal.
2. The tire pressure monitoring device 10 stores the first protocol or the second protocol according to the external signal.
3. The tire pressure monitoring device 10 receives a tire pressure signal from at least one tire pressure sensor 20.
4). The tire pressure monitoring device 10 compares the protocol of the tire pressure signal with the first protocol or the second protocol.
5. If the tire pressure signal protocol corresponds to the first protocol or the second protocol, the tire pressure signal is decoded by the first protocol or the second protocol.

  The protocol according to the preferred embodiment is described as follows.

1. The tire pressure monitoring device 10 stores the first protocol and the second protocol in advance. The tire pressure monitoring device 10 receives the tire pressure signal and compares the first protocol with the tire pressure signal.
2. The tire pressure monitoring device 10 stores the first protocol and the second protocol in advance. An external signal is provided, and the external signal includes an instruction to control the tire pressure monitoring device 10 to read out the first protocol. The tire pressure monitoring device 10 reads the first protocol according to the external signal and decodes the tire pressure signal.
3. An external signal is provided, and the external signal includes the first protocol and a storage instruction corresponding to the first protocol. The tire pressure monitoring device 10 decodes the tire pressure signal according to the external signal.

  The external instruction is that the tire pressure monitoring device receives an external signal from the external control device 30 by the signal receiver module 14 connected to the control module 13. The external control device 30 transmits an external signal to the signal receiver module 14 through a wired or wireless connection. Here, the wired connection includes a line connection or a USB port, and the wireless connection includes RF, Wi-Fi, or Bluetooth. In addition, the external control device 30 may be a specific remote control device, or an integrated product coupled to the tire pressure monitoring device 10 or an electronic product mounted on a vehicle such as a touch screen or an electronic control device.

In conclusion, the means for changing the read protocol of the tire pressure monitoring device 10 include the following.
1. The control module 13 reads out a protocol compatible with the tire pressure signal protocol from the plurality of protocols stored in the storage module 11.
2. The external control device inputs an external signal to the control module 13 and reads out a protocol suitable for the type of at least one tire pressure sensor 20.

  The second embodiment in that the control module 13 of the second embodiment is connected to a display module 40 that displays the decoded tire pressure values detected by each of the at least one tire pressure sensor 20. Is different from the first embodiment. Alternatively, when the tire pressure value detected by each of the at least one tire pressure sensor 20 does not match the set value, the display module 40 issues an audio alarm or a visual alarm.

  The difference between the third embodiment and the first embodiment is that the control module 13 of the third embodiment is connected to a transfer module 50 that encodes the decoded tire pressure signal. The transfer module 50 can transmit the encoded tire pressure value to other external devices such as a vehicle electronic control device, tire pressure display device and mobile phone as desired. The transfer module 50 can also convert the encoded tire pressure signal into RF communication, blue communication or Wi-Fi communication as desired, and the corresponding working parts are mounted.

  In conclusion, when a repairman replaces at least one tire pressure sensor 20 of the present invention with a new tire pressure sensor, the repairman need not change the protocol of the new tire pressure sensor. Thus, complicated work processes are avoided.

DESCRIPTION OF SYMBOLS 10 ... Tire pressure monitoring apparatus 11 ... Memory module 12 ... Receiver module 13 ... Control module 14 ... Signal receiver module 20 ... Tire pressure sensor 30 ... External control device 40 ... Display module 50 ... Transfer module

Claims (9)

A tire pressure monitoring device capable of receiving tire pressure signals according to different protocols,
A receiver module for receiving a tire pressure signal from at least one tire pressure sensor;
A signal receiver module for receiving an external signal from an external control device;
A writable storage module, wherein at least one protocol is written and stored according to the external signal;
The receiver module is connected to the storage module, the receiver module and the signal receiver module, reads one of the at least one protocol stored in the storage module according to the external signal, and is received by the receiver module A tire pressure monitoring device comprising: a control module for decoding the tire pressure signal.   The plurality of protocols are written and stored in the storage module, and the external signal includes an instruction to control the control module to read one of the protocols stored in the storage module. The tire pressure monitoring device described.   The control module is connected to a display module that displays a tire pressure value by decoding the tire pressure signal received from each of at least one tire pressure sensor, and each of the at least one tire pressure sensor The tire pressure monitoring device according to claim 1, wherein the display module issues an alarm when the detected tire pressure value does not coincide with a set value.   The tire pressure monitoring device according to claim 1, wherein the control module is connected to a transfer module that encodes or converts the decoded tire pressure signal and then transmits the tire pressure signal to an external device. A tire pressure monitoring device capable of receiving tire pressure signals according to different protocols,
A receiver module for receiving a tire pressure signal from at least one tire pressure sensor;
A storage module that is writable and stores a plurality of protocols;
A protocol that is connected to the storage module and the receiver module and that is compatible with the protocol stored in the storage module after comparing the tire pressure signal received by the receiver module with the protocol stored in the storage module And a control module for reading the tire pressure signal and decoding the tire pressure signal.   The control module is connected to a signal receiver module that receives an external signal from an external control device, and the external signal controls the control module to read one of the protocols stored in the storage module. The tire pressure monitoring device according to claim 5, further comprising an instruction.   The control module is connected to a signal receiver module that receives an external signal from an external control device, the external signal includes a specific protocol and a storage instruction corresponding to the specific protocol, and the storage module follows the storage instruction The tire pressure monitoring apparatus according to claim 5, wherein the specific protocol is stored.   The control module is connected to a display module for displaying a decoded tire pressure signal received from each of the at least one tire pressure sensors, and the tire pressure value detected by each of the at least one tire pressure sensors is 6. The tire pressure monitoring device according to claim 5, wherein the display module issues an alarm such as an audio alarm or a visual alarm when it does not coincide with a set value.   The control module is connected to a transfer module that encodes the decoded tire pressure signal, and the transfer module encodes the decoded tire pressure signal or converts the decoded tire pressure signal. The tire pressure monitoring device according to claim 5, wherein the tire pressure signal is transmitted to an external device after a while.

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