TWI758573B - How to program tire pressure sensor - Google Patents

Abstract

A method for programming a tire pressure detector, which can distinguish the type of a main chip mounted on a tire pressure detector through a communication protocol, so as to select a suitable code version to program into the tire pressure detector. The programming includes the following steps: A. Sending at least one inquiry message to the tire pressure detector through at least one communication protocol; B. Waiting to receive a reply message returned by the tire pressure detector; C. After receiving the tire pressure detector After replying to the message, send a corresponding code to be programmed into the tire pressure detector. With the received reply message, the corresponding code can be sent to the tire pressure detector by using the appropriate communication protocol to avoid the failure of the programming.

Description

How to program tire pressure sensor

The present invention is related to the programming technology of tire pressure detector; in particular, it refers to a programming method which can distinguish the type of chip by communication protocol.

Tire pressure detectors have gradually become standard equipment in automobiles in recent years. They can detect values such as tire pressure and temperature, and use wireless signals to transmit these information to the in-vehicle receiving device for display for the driver to interpret. The wireless signals and communication protocols that can be received by in-car receivers of car brands are not the same, and even in-car devices of the same car brand will use different communication protocols depending on the car model or the time of manufacture. The tire pressure detector needs to be loaded into an applicable specific communication program, so that the signal sent out meets the communication protocol requirements of the corresponding in-vehicle device, and the tire pressure detector can work normally.

With the vigorous development of automotive electronics, many IC design companies have successively invested in the development and manufacture of tire pressure detector main chips, resulting in a variety of chips to choose from on the market; however, even for the same car of the same year, as long as its The main chip of the tire pressure detector is different, and the communication protocol applicable to the tire pressure detector may also be different. Therefore, the repair shop or retailer that provides tire pressure detector installation services also needs to target the tire pressure detector. Communication programs required for various chips are prepared for various car models for installation and use.

However, the tire pressure detector may not be able to determine the type of its internal main chip from the appearance, so there may be a situation of programming failure, how to accurately distinguish the type of the main chip mounted on a tire pressure detector, so as to select It is a problem that the industry needs to solve urgently when a suitable communication program version is programmed into the tire pressure detector.

In view of this, the purpose of the present invention is to provide a method for programming a tire pressure detector, which can program codes to the tire pressure detector with a correct communication protocol.

In order to achieve the above purpose, the present invention provides a method for programming a tire pressure detector , is applied to a programming device for programming one of a plurality of codes in the programming device into a tire pressure detector, the programming device has a plurality of first programming contacts, The tire pressure detector has a plurality of second programming contacts in contact with the first programming contacts, and the programming method includes: A. Send at least one inquiry message to the tire pressure detector by at least one communication protocol; B. Waiting to receive a reply message from the tire pressure detector; C. After receiving the reply message, send the corresponding code to the tire pressure detector.

The effect of the present invention is that, with the received reply message, the corresponding program code can be transmitted to the tire pressure detector by using a suitable communication protocol, so as to avoid the failure of the programming.

In order to explain the present invention more clearly, several preferred embodiments are given and described in detail with the drawings as follows. The programming system of the first preferred embodiment of the present invention includes a programming device 10 and a plurality of tire pressure detectors. As shown in FIG. 1A , the programming device 10 has a plurality of first programming contacts 101-106 and A memory (not shown), the first programming contacts 101-106 serve as the interface for communicating with the tire pressure detector, and the programming device 10 can communicate in different ways through the first programming contacts 101-106 Protocol output signal, a plurality of code codes are stored in the memory, each code code is used for the tire pressure detector to perform tire pressure detection work after programming; the tire pressure detector has a plurality of second programming contacts, the second programming contacts can be connected with the first programming contacts 101~106 correspondingly, the tire pressure detector can transmit signals through a fixed communication protocol through the second programming contacts .

In this embodiment, as shown in FIG. 1B , the tire pressure detectors include a first tire pressure detector 12 and a second tire pressure detector 14 , and the first tire pressure detector 12 includes A plurality of second programming contacts 121-126 and a first main chip (not shown), the first main chip uses a first communication protocol to output and receive signals through the second programming contacts 121-126. The second tire pressure detector 14 includes a plurality of second programming contacts 141 - 146 and a second main chip (not shown), the second main chip uses a second communication protocol different from the first communication protocol to transmit The second programming contacts 141-146 output and receive signals; in addition, in this embodiment, the first main chip is Infineon SP37, and the second main chip is NXP FXTH87, but the main chip is not the above Infineon SP37 and NXP FXTH87 only.

The programming method of this embodiment is applied to the programming device 10 and includes the following steps shown in FIG. 2 :

The first tire pressure detector 12 is connected to the programming device 10, so that the first programming contacts 101-106 and the second programming contacts 121-126 are connected to each other.

The programming device 10 transmits a first inquiry message to the first tire pressure detector 12 using a first communication protocol; the programming device 10 waits for a reply message returned by the first tire pressure detector.

After receiving the reply information, the programming device 10 transmits the corresponding code to the first tire pressure detector 12 using the first communication protocol, and the transmitted code corresponds to the first tire pressure detector 12 . the first main chip, and program the code to the first tire pressure detector 12 to complete the programming of the first tire pressure detector 12 . In this way, the basic steps of the programming method of this embodiment are completed.

If the second tire pressure detector 14 is to be programmed, the programming method of this embodiment is as follows:

The second tire pressure detector 14 is connected to the programming device 10, so that the first programming contacts 101-106 and the second programming contacts 141-146 are connected to each other.

The programming device 10 first transmits a first inquiry message to the second tire pressure detector 14 using the first communication protocol; the programming device 10 waits to receive a reply message returned by the second tire pressure detector 14 .

If the programming device 10 does not receive the reply message within a first predetermined time, the programming device 10 transmits a second inquiry message to the second tire pressure detector 14 using the second communication protocol instead; the programming The device 10 waits to receive another reply message returned by the second tire pressure detector 14 .

After the programming device 10 receives the reply message within a second predetermined time, the programming device 10 transmits the corresponding code to the second tire pressure detector 14 using the second communication protocol. The transmitted code It is the second main chip corresponding to the second tire pressure detector 14 , and the program code is programmed into the second tire pressure detector 14 . In this way, the programming of the second tire pressure detector 14 is completed.

Therefore, as long as the tire pressure detector installed in the programming device 10 is one of the first and second tire pressure detectors 12 and 14, the program code can be successfully programmed.

In addition, the programming method of the present embodiment further includes that if the programming device 10 does not receive the reply message within the second predetermined time, the following steps are performed: the programming device 10 sends an error message, and the error message can be The display screen 11 of the programming device 10 displays the error message in the form of light or text. In other embodiments, the error message can also be a warning in the form of sound, which is not limited to the above-mentioned light or text display. In this way, the user can know that the tire pressure detector mounted on the programming device 10 may not be the first and second tire pressure detectors 12 and 14 or the tire pressure detector is faulty.

Then, another programming method is provided, which can also achieve the purpose of programming the correct code to the tire pressure detector. The second preferred embodiment of the present invention uses the same programming system as the above-mentioned embodiment. The programming method of the tire pressure detector of this embodiment includes the following steps shown in FIG. 3 :

The first tire pressure detector 12 is connected to the programming device 10 so that the programming contacts of the two are connected to each other.

The programming device 10 transmits the first query message using the first communication protocol, and then transmits the second query message to the first tire pressure detector 12 using the second communication protocol; then, the programming device 10 waits for receiving the first query message. A reply message returned by the tire pressure detector 12 .

After the programming device 10 receives the reply message returned by the first tire pressure detector 12 using the first communication protocol within a third predetermined time (ie, the predetermined time defined in the present invention), the programming device 10 It is determined that the reply message is a reply message corresponding to the first communication protocol or a reply message corresponding to the second communication protocol, and after confirming that the received reply message is a reply message corresponding to the first communication protocol, the programming device 10 uses the first communication protocol. The protocol transmits the corresponding program code to the tire pressure detector 12, the transmitted program code is the first main chip corresponding to the first tire pressure detector 12, and the program code is programmed into the first tire pressure detector 12. The detector 12 is completed, and the programming of the first tire pressure detector 12 is completed.

If the second tire pressure detector 14 is to be programmed, the method for programming the tire pressure detector in this embodiment also includes the following steps:

The second tire pressure detector 14 is connected to the programming device 10 so that the programming contacts of the two are connected to each other.

After the programming device 10 transmits the first inquiry message to the second tire pressure detector 14 using the first communication protocol, it then transmits the second inquiry message to the second tire pressure detector 14 using the second communication protocol; and then , the programming device 10 waits to receive a reply message returned by the second tire pressure detector 14 .

After the programming device 10 receives the reply message returned by the second tire pressure detector 14 using the second communication protocol within the third predetermined time, the programming device 10 determines that the reply message corresponds to the first communication The response message of the protocol or the response message corresponding to the second communication protocol, after confirming that the received response message is the response message corresponding to the second communication protocol, the programming device 10 transmits the corresponding code to the second communication protocol using the second communication protocol. The tire pressure detector 14 transmits the program code corresponding to the second main chip of the second tire pressure detector 14, and the program code is programmed into the second tire pressure detector 14 to complete the second tire pressure detector 14. The programming of tire pressure detector 14.

In addition, if the programming device 10 does not receive the reply message within the third predetermined time, the following steps are performed: the programming device 10 sends an error message, and the error message can be displayed on the programming device in the form of light or text. The display screen 11 on the recording device 10 is displayed. In other embodiments, the error message can also be a warning in the form of a sound, and is not limited to the above-mentioned light or text display. In this way, the user can know that the tire pressure detector mounted on the programming device 10 may not be the first and second tire pressure detectors 12 and 14 or the tire pressure detector is faulty.

The programming methods of the tire pressure detectors of the first and second preferred embodiments are all applied to the programming devices and tire pressure detectors that transmit communication protocols and reply messages in a wired manner, and are used in other implementations. For example, the programming method of the tire pressure detector can also be applied to the programming device and the tire pressure detector that transmit wirelessly, and the effect of transmitting the communication protocol and replying to the message can also be achieved by the wireless transmission method. Therefore, the programming method of the tire pressure detector is not limited to the application of the above-mentioned embodiment to the programming device and the tire pressure detector that transmit by wire.

According to the above, the programming method of the present invention can distinguish the type of the main chip mounted on the tire pressure detector based on the received reply message, so as to select a suitable code version to program into the tire pressure detector, Avoid burning failures.

The above descriptions are only preferred feasible embodiments of the present invention, and any equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

[this invention] 10: Burning device 101~106: The first programming contact 11: Display screen 12: The first tire pressure detector 121~126: The second programming contact 14: Second tire pressure detector 141~146: The second programming contact

FIG. 1A is a schematic diagram of a writer according to the first preferred embodiment of the present invention. 1B is a schematic diagram of the first tire pressure detector and the second tire pressure detector according to the first preferred embodiment of the present invention. FIG. 2 is a flow chart of the programming method of the tire pressure detector according to the first preferred embodiment of the present invention. FIG. 3 is a flow chart of the programming method of the tire pressure detector according to the second preferred embodiment of the present invention.

Claims (3)

A programming method for a tire pressure detector is applied to a programming device for programming one of a plurality of codes in the programming device into a tire pressure detector. The programming method Including: A. The programming device sends an inquiry message to the tire pressure detector through a first communication protocol; B. The programming device waits to receive a reply message returned by the tire pressure detector; C. The tire pressure detector Whether the programming device receives the reply message within a first predetermined time: if so, after receiving the reply message, the programming device transmits a corresponding one of the code to be programmed in the first communication protocol according to the reply message to the tire pressure detector; if not, perform the following steps: the programming device sends a second inquiry message to the tire pressure detector through a second communication protocol; the programming device waits to receive the tire pressure detector Another reply message returned by the tester; whether the programming device has received the other reply message within a second predetermined time, and if so, send a corresponding code to the tire to be programmed to the tire using the second communication protocol pressure detector. The method for programming a tire pressure detector as claimed in claim 1, wherein step C further comprises: after the second predetermined time has passed without receiving the other reply message, the programming device sends an error message . A programming method for a tire pressure detector is applied to a programming device for programming one of a plurality of codes in the programming device into a tire pressure detector. The programming method Including: A. The programming device transmits a first inquiry message to the tire pressure detector by a first communication protocol, and transmits a second inquiry message to the tire pressure detector by a second communication protocol; B. The programming device is waiting to receive a reply message from the tire pressure detector; C. Whether the programming device has received the reply message within a predetermined time: if so, the programming device has received the reply After the message is sent, it is judged that the reply message is a reply message corresponding to the first communication protocol or a reply message corresponding to the second communication protocol; wherein, if the reply message corresponds to the first communication protocol, it is transmitted by the first communication protocol A corresponding one of the code is programmed into the tire pressure detector; if the reply message corresponds to the second communication protocol, a corresponding one of the program code is sent to the tire pressure detector by the second communication protocol device; if not, the programming device issues an error message.

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