CN118011996A - System and method for detecting loop of air bag control module - Google Patents
System and method for detecting loop of air bag control module Download PDFInfo
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- CN118011996A CN118011996A CN202311838388.8A CN202311838388A CN118011996A CN 118011996 A CN118011996 A CN 118011996A CN 202311838388 A CN202311838388 A CN 202311838388A CN 118011996 A CN118011996 A CN 118011996A
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- 238000001514 detection method Methods 0.000 claims abstract description 100
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000004088 simulation Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 4
- 238000013507 mapping Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0877—Cache access modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a loop detection system, a detection method and an upper computer of an air bag control module, wherein the loop detection system comprises a collision signal simulation circuit, a loop detection circuit and at least two air bag simulation circuits, the loop detection circuit comprises at least one cushion loop detection circuit and at least one safety belt lock catch loop detection circuit, one air bag simulation circuit correspondingly simulates an air bag on the cushion loop detection circuit or the safety belt lock catch loop detection circuit, and the collision signal simulation circuit controls the at least two air bag simulation circuits; the seat cushion loop detection circuit comprises a first resistor, a second resistor and a first switch, the first resistor and the second resistor are connected in series, the first switch is connected with the second resistor in parallel, and the seat belt lock loop detection circuit comprises a second switch. The invention effectively improves the working efficiency and accuracy of the system test and saves a great deal of manpower, material resources and time.
Description
Technical Field
The invention relates to the technical field of automobile airbag controllers, in particular to an airbag control module loop detection system and an airbag control module loop detection method.
Background
The safety airbag control module is a passive safety control unit and can send out a safety belt unbuckled prompt, when an automobile collides violently, the safety airbag control module receives collision acceleration signals from external and internal sensors, collects, analyzes, judges and processes the collision signals, and when the ignition threshold is reached, the ignition power flow point explosion safety airbag and the safety belt pretensioner are sent out, so that the damage of collision to drivers and passengers is effectively reduced. The airbag control module is critical and therefore its function must be adequately and effectively verified. At present, in the process of system function debugging and DV test verification of an air bag control module, an HIL rack is required to be built for testing the detection ignition loop of the control module, the detection of a seat cushion of a driver and a lock catch of a safety belt, so that the development and test period is long, the cost is high, and the development of an automatic test tool for loop detection of the air bag control module is needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an airbag control module loop detection system and an airbag control module loop detection method.
In order to achieve the above-mentioned object, the present invention provides an airbag control module loop detection system, which includes a collision signal simulation circuit, a loop detection circuit and at least two airbag simulation circuits, wherein the loop detection circuit includes at least one cushion loop detection circuit and at least one safety belt latch loop detection circuit, and one of the airbag simulation circuits correspondingly simulates an airbag on one of the cushion loop detection circuit and the one of the safety belt latch loop detection circuits, and the collision signal simulation circuit controls the at least two airbag simulation circuits;
The seat cushion loop detection circuit comprises a first resistor, a second resistor and a first switch, wherein the first resistor and the second resistor are connected in series, the first switch is connected with the second resistor in parallel, and the seat belt lock loop detection circuit comprises a second switch.
Preferably, the collision signal analog circuit comprises a third resistor, a fourth resistor, a fifth resistor and a capacitor;
The +12V power supply is input to one end of the third resistor, the other end of the third resistor is connected with one end of the fourth resistor and one end of the capacitor respectively, the other end of the fourth resistor is connected with the control module CRO of the safety airbag and one end of the fifth resistor respectively, the other end of the capacitor and the other end of the fifth resistor are grounded, and PWM signals are output between the third resistor and the capacitor.
Preferably, the airbag control module collision signal status is monitored based on the PWM signal.
Preferably, the first switch is controlled to be turned on and off based on a signal indicating whether a person is detected on the seat cushion, and is turned on when a person is detected on the seat cushion; and if no person is detected on the seat cushion, the first switch is loosened and closed.
Preferably, the second switch is controlled to be opened and closed based on a signal for detecting whether the belt buckle is locked, and if the belt buckle is locked, the second switch is opened by pressing; if the safety belt lock catch is unlocked, the second switch is opened and closed.
Preferably, the test result is determined based on the obtained resistance value of the cushion loop detection circuit or the obtained resistance value of the seat belt buckle loop detection circuit.
Preferably, a resistance upper limit value and a resistance lower limit value are preset for the resistance value of the cushion loop detection circuit and the resistance value of the safety belt lock loop detection circuit respectively, if the obtained resistance value of the cushion loop detection circuit or the obtained resistance value of the safety belt lock loop detection circuit is located between the corresponding resistance upper limit value and the corresponding resistance lower limit value, the test result is correct, otherwise, the test result is wrong.
The application also provides a detection method of the safety airbag control module loop detection system, which comprises the following steps:
responding to a triggering event;
Acquiring the resistance value of the cushion loop detection circuit or the resistance value of the safety belt lock catch loop detection circuit;
Judging whether the resistance value is between the corresponding resistance upper limit value and the resistance lower limit value;
If yes, the test result is correct;
If not, the test result is wrong.
The application also provides an upper computer for executing the detection method.
Compared with the prior art, the invention has the beneficial effects that:
the invention effectively improves the working efficiency and accuracy of the system test and saves a great deal of manpower, material resources and time.
Drawings
Fig. 1 is a circuit diagram of an airbag control module circuit detection system of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to fig. 1:
The invention provides an air bag control module loop detection system, which comprises a collision signal simulation circuit 1, a loop detection circuit 3 and at least two air bag simulation circuits 2, wherein the loop detection circuit 3 comprises at least one cushion loop detection circuit 31 and at least one safety belt lock catch loop detection circuit 32, one air bag simulation circuit 2 correspondingly simulates an air bag on one cushion loop detection circuit 31 or one safety belt lock catch loop detection circuit 32, and the collision signal simulation circuit 1 controls the at least two air bag simulation circuits 2;
The seat cushion loop detection circuit 31 includes a first resistor 311, a second resistor 312, and a first switch 313, the first resistor 311 and the second resistor 312 are connected in series, the first switch 313 and the second resistor 312 are connected in parallel, and the seat belt buckle loop detection circuit 32 includes a second switch 321.
Further, the collision signal simulation circuit 1 includes a third resistor 11, a fourth resistor, a fifth resistor and a capacitor;
The +12v power is input to one end of the third resistor 11, the other end of the third resistor 11 is connected to one end of the fourth resistor 12 and one end of the capacitor 14, the other end of the fourth resistor 12 is connected to one end of the airbag control module CRO and one end of the fifth resistor 13, the other end of the capacitor 14 and the other end of the fifth resistor 13 are grounded, and a PWM signal is output between the third resistor 11 and the capacitor 14. The collision signal simulation circuit 1 simulates the external output load of the collision signal of the air bag control module, connects the air bag control module CRO to the simulation circuit, and monitors the state of the collision signal of the air bag control module through PWM.
In the present embodiment, only the second switch 321 is provided in the belt buckle loop detection circuit 32, and since the electric wire in the circuit has a resistance, fire is not caused in the case where the input voltage is not high and the resistance of the belt buckle loop detection circuit 32 can be measured.
Referring to fig. 1, in the present embodiment, there are 4 airbag analog circuits 2, and the resistance in each circuit is modeled as an airbag, which is controlled by a PWM signal. Two cushion loop detection circuits 31 and two seat belt buckle loop detection circuits 32 are provided corresponding to the airbag analog circuit 2. Which is expandable in terms of the number of seats and belt buckles on the vehicle.
Specifically, the opening and closing of the first switch 313 is controlled based on a signal indicating whether or not a person is detected on the seat cushion, and if a person is detected on the seat cushion, the first switch 313 is pressed to be opened; if no person is detected on the seat cushion, the first switch 313 is released to close. The opening and closing of the second switch 321 is controlled based on a signal that detects whether the seat belt buckle is locked, and if the seat belt buckle is locked, the second switch 321 is pressed down to be opened; if the belt lock is unlocked, the second switch 321 is released to close.
In this embodiment, the DC power supply provides power to the airbag control module and the loop detection system. The safety airbag control module is connected with the loop detection system through a hard wire and detects a driver seat cushion and a safety belt lock loop in the loop detection system in real time. The CAN transceiver box acquires information detected by the safety airbag control module in real time through a CAN wire and transmits the information to the PC end result upper computer through a USB wire. The upper computer at the PC end is responsible for analyzing and judging the real-time acquired safety air bag control module loop detection data, and further automatically displaying the acquired original numerical value, the signal graph curve and the logic judgment result.
Specifically, the +12v power supply supplies power to the collision signal analog circuit 1 and the loop detection circuit 3, respectively, triggers a collision, the collision signal analog circuit 1 outputs a PWM signal, the first switch 313 on the cushion loop detection circuit 31 controls the opening and closing thereof based on the signal that detects whether a person is on the cushion, and the second switch 321 on the belt buckle loop detection circuit 32 controls the opening and closing thereof based on the signal that detects whether the belt buckle is locked; if the first switch 313 or the second switch 321 is not detected to be closed, the air bag simulation circuit 2 is not electrified, so that the air bag is indicated not to be ejected; when the first switch 313 is detected to be closed or the second switch 321 is detected to be closed, and the seat cushion is proved to be locked by a person or a safety belt lock, the PWM signal is used for electrifying the safety airbag analog circuit 2 corresponding to the seat cushion loop detection circuit 31 or the safety belt lock loop detection circuit 32, and the current flowing through the safety airbag analog circuit 2 and the electrifying time are obtained based on the voltage of the resistor in the safety airbag analog circuit 2; judging whether the corresponding air bag can be ejected normally or not based on the current and the electrifying time, namely using the resistance to simulate the effect of the air bag, and testing the air bag so as to prevent the air bag from being burst at the moment and damaging a tester by huge impact force; the effect of simulating the airbag by using the resistor reduces the test cost, namely, if the real airbag is used, the airbag can be ignited and detonated only once, and is a disposable product, and in the research and development test stage, frequent tests are required, so that the research and development test cost of the real airbag is too high.
According to the functional requirements of the safety airbag control module system, the relevant information of the ignition channel, the driver seat cushion, the driver safety belt, the input voltage, the boost voltage and the output 3.3V voltage detection is output outwards in a CAN message mode, and the CAN communication data structure is shown in the table 1.
TABLE 1
The method comprises the steps of carrying out one-to-one mapping and correlation on system variables required for judging detection results of air bag ignition channels 1, 2, 3 and 4, driver seat cushions 1 and 2, driver seat belts 1 and 2, acceleration values X, Y, input voltage, boost voltage and output 3.3V voltage in an upper computer development environment signal mapping module, and using the system variables and CAN message signals designed in the upper computer development environment signal mapping module as input and output of result judging codes or data cache carriers to be detected. The air bag control module means of subsistence detects that each loop detection result in the system determines logic as follows:
The upper and lower resistance values are preset for the resistance value of the cushion loop detection circuit 31 and the resistance value of the seat belt buckle loop detection circuit 32, respectively, if the obtained resistance value of the cushion loop detection circuit 31 or the resistance value of the seat belt buckle loop detection circuit 32 is between the corresponding upper and lower resistance values, the test result is correct, otherwise the test result is incorrect.
In this embodiment, the system further includes a voltage detection function code for detecting the voltage value of each node of the internal circuit.
The application also provides a detection method of the safety airbag control module loop detection system, which comprises the following steps:
responding to a triggering event;
acquiring the resistance value of the cushion loop detection circuit 31 or the resistance value of the seat belt buckle loop detection circuit 32;
judging whether the resistance value is between the corresponding resistance upper limit value and the resistance lower limit value;
If yes, the test result is correct;
If not, the test result is wrong.
In this embodiment, the obtained resistance values are all the resistance values within a period of time, so if the test result is found to be wrong each time, the number of errors is added by 1 and the number of times is sent to the upper computer panel.
The invention is applied to automatic test of loop monitoring, debugging and verification of the air bag control module, effectively improves the working efficiency and accuracy of system test, and saves a great deal of manpower, material resources and time. The number of errors detected by the air bag control module loop can be recorded and automatically displayed. The loop detection system can trigger loop detection for 100ms and complete result logic judgment, and data refreshing is fast; one key can trigger zero clearing of error times of all loops, and the method is convenient and quick.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A loop detection system of an air bag control module is characterized by comprising a collision signal simulation circuit, a loop detection circuit and at least two air bag simulation circuits,
The loop detection circuit comprises at least one cushion loop detection circuit and at least one safety belt lock catch loop detection circuit, one safety air bag simulation circuit correspondingly simulates an safety air bag on one cushion loop detection circuit or one safety belt lock catch loop detection circuit, and the collision signal simulation circuit controls the at least two safety air bag simulation circuits;
The seat cushion loop detection circuit comprises a first resistor, a second resistor and a first switch, wherein the first resistor and the second resistor are connected in series, the first switch is connected with the second resistor in parallel, and the seat belt lock loop detection circuit comprises a second switch.
2. The airbag control module circuit detection system of claim 1, wherein the collision signal analog circuit comprises a third resistor, a fourth resistor, a fifth resistor, and a capacitor;
The +12V power supply is input to one end of the third resistor, the other end of the third resistor is connected with one end of the fourth resistor and one end of the capacitor respectively, the other end of the fourth resistor is connected with the control module CRO of the safety airbag and one end of the fifth resistor respectively, the other end of the capacitor and the other end of the fifth resistor are grounded, and PWM signals are output between the third resistor and the capacitor.
3. The airbag control module circuit detection system of claim 2, wherein the airbag control module collision signal condition is monitored based on the PWM signal.
4. The airbag control module circuit detection system of claim 3, wherein the opening and closing of the first switch is controlled based on a signal that whether a person is detected on the seat cushion, and if a person is detected on the seat cushion, the first switch is turned on by pressing; and if no person is detected on the seat cushion, the first switch is loosened and closed.
5. The airbag control module circuit detection system of claim 4, wherein the opening and closing of the second switch is controlled based on a signal that detects whether a seat belt buckle is locked, the second switch being depressed to open if the seat belt buckle is locked; and if the safety belt lock catch is unlocked, the second switch is opened and closed.
6. The airbag control module circuit detection system according to claim 5, wherein the test result is determined based on acquiring a resistance value of the cushion circuit detection circuit or a resistance value of the seat belt buckle circuit detection circuit.
7. The airbag control module circuit detection system according to claim 6, wherein an upper resistance value and a lower resistance value are preset for the resistance value of the cushion circuit detection circuit and the resistance value of the seat belt buckle circuit detection circuit, respectively, and if the obtained resistance value of the cushion circuit detection circuit or the obtained resistance value of the seat belt buckle circuit detection circuit is between the corresponding upper resistance value and lower resistance value, the test result is correct, otherwise the test result is incorrect.
8. A method of detecting an airbag control module circuit detection system, comprising:
responding to a triggering event;
Acquiring the resistance value of the cushion loop detection circuit or the resistance value of the safety belt lock catch loop detection circuit;
Judging whether the resistance value is between the corresponding resistance upper limit value and the resistance lower limit value;
If yes, the test result is correct;
If not, the test result is wrong.
9. A host computer configured to perform the detection method of claim 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311470021.5A CN117389167A (en) | 2023-11-07 | 2023-11-07 | Acceleration simulation method, device and system for SDM and storage medium |
| CN2023114700215 | 2023-11-07 |
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| CN118011996A true CN118011996A (en) | 2024-05-10 |
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| CN202311470021.5A Pending CN117389167A (en) | 2023-11-07 | 2023-11-07 | Acceleration simulation method, device and system for SDM and storage medium |
| CN202311848758.6A Pending CN117990944A (en) | 2023-11-07 | 2023-12-28 | Acceleration data verification method and device, medium and electronic equipment |
| CN202311848809.5A Pending CN117951879A (en) | 2023-11-07 | 2023-12-28 | Simulation method, verification method and device for collision working condition data |
| CN202311846942.7A Pending CN117951001A (en) | 2023-11-07 | 2023-12-28 | Mutation test generation method, system and computer storage medium |
| CN202311848711.XA Pending CN117775010A (en) | 2023-11-07 | 2023-12-28 | Control method of acceleration sensor system |
| CN202311838382.0A Pending CN117971285A (en) | 2023-11-07 | 2023-12-28 | Method and system for refreshing master MCU Boot and auxiliary MCU Boot of controller |
| CN202311846861.7A Pending CN118093453A (en) | 2023-11-07 | 2023-12-28 | EDR event storage method and device of SDM controller, electronic equipment and storage medium |
| CN202311838383.5A Pending CN117971727A (en) | 2023-11-07 | 2023-12-28 | Storage method and system of controller chip |
| CN202311849536.6A Pending CN117970175A (en) | 2023-11-07 | 2023-12-28 | Plug connector detection system and detection method |
| CN202311838388.8A Pending CN118011996A (en) | 2023-11-07 | 2023-12-28 | System and method for detecting loop of air bag control module |
| CN202311846921.5A Pending CN117990386A (en) | 2023-11-07 | 2023-12-28 | Calibration method for collision working condition data |
| CN202311846842.4A Pending CN117755231A (en) | 2023-11-07 | 2023-12-28 | Safety airbag controller and ignition method |
| CN202311846899.4A Pending CN117755232A (en) | 2023-11-07 | 2023-12-28 | Ignition method and device of safety airbag and vehicle |
| CN202311846974.7A Pending CN118011998A (en) | 2023-11-07 | 2023-12-28 | Safety airbag controller testing device and testing method |
| CN202410014493.8A Pending CN117930676A (en) | 2023-11-07 | 2024-01-04 | Acceleration simulation method, device and system for SDM and storage medium |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311470021.5A Pending CN117389167A (en) | 2023-11-07 | 2023-11-07 | Acceleration simulation method, device and system for SDM and storage medium |
| CN202311848758.6A Pending CN117990944A (en) | 2023-11-07 | 2023-12-28 | Acceleration data verification method and device, medium and electronic equipment |
| CN202311848809.5A Pending CN117951879A (en) | 2023-11-07 | 2023-12-28 | Simulation method, verification method and device for collision working condition data |
| CN202311846942.7A Pending CN117951001A (en) | 2023-11-07 | 2023-12-28 | Mutation test generation method, system and computer storage medium |
| CN202311848711.XA Pending CN117775010A (en) | 2023-11-07 | 2023-12-28 | Control method of acceleration sensor system |
| CN202311838382.0A Pending CN117971285A (en) | 2023-11-07 | 2023-12-28 | Method and system for refreshing master MCU Boot and auxiliary MCU Boot of controller |
| CN202311846861.7A Pending CN118093453A (en) | 2023-11-07 | 2023-12-28 | EDR event storage method and device of SDM controller, electronic equipment and storage medium |
| CN202311838383.5A Pending CN117971727A (en) | 2023-11-07 | 2023-12-28 | Storage method and system of controller chip |
| CN202311849536.6A Pending CN117970175A (en) | 2023-11-07 | 2023-12-28 | Plug connector detection system and detection method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311846921.5A Pending CN117990386A (en) | 2023-11-07 | 2023-12-28 | Calibration method for collision working condition data |
| CN202311846842.4A Pending CN117755231A (en) | 2023-11-07 | 2023-12-28 | Safety airbag controller and ignition method |
| CN202311846899.4A Pending CN117755232A (en) | 2023-11-07 | 2023-12-28 | Ignition method and device of safety airbag and vehicle |
| CN202311846974.7A Pending CN118011998A (en) | 2023-11-07 | 2023-12-28 | Safety airbag controller testing device and testing method |
| CN202410014493.8A Pending CN117930676A (en) | 2023-11-07 | 2024-01-04 | Acceleration simulation method, device and system for SDM and storage medium |
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| CN118467363A (en) * | 2024-05-16 | 2024-08-09 | 青岛科技大学 | Parallel program basic path coverage test based on differential evolution algorithm |
| CN118428178B (en) * | 2024-07-02 | 2024-09-17 | 中国人民解放军海军工程大学 | Overload simulation analysis method and system based on double-degree-of-freedom model |
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2023
- 2023-11-07 CN CN202311470021.5A patent/CN117389167A/en active Pending
- 2023-12-28 CN CN202311848758.6A patent/CN117990944A/en active Pending
- 2023-12-28 CN CN202311848809.5A patent/CN117951879A/en active Pending
- 2023-12-28 CN CN202311846942.7A patent/CN117951001A/en active Pending
- 2023-12-28 CN CN202311848711.XA patent/CN117775010A/en active Pending
- 2023-12-28 CN CN202311838382.0A patent/CN117971285A/en active Pending
- 2023-12-28 CN CN202311846861.7A patent/CN118093453A/en active Pending
- 2023-12-28 CN CN202311838383.5A patent/CN117971727A/en active Pending
- 2023-12-28 CN CN202311849536.6A patent/CN117970175A/en active Pending
- 2023-12-28 CN CN202311838388.8A patent/CN118011996A/en active Pending
- 2023-12-28 CN CN202311846921.5A patent/CN117990386A/en active Pending
- 2023-12-28 CN CN202311846842.4A patent/CN117755231A/en active Pending
- 2023-12-28 CN CN202311846899.4A patent/CN117755232A/en active Pending
- 2023-12-28 CN CN202311846974.7A patent/CN118011998A/en active Pending
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- 2024-01-04 CN CN202410014493.8A patent/CN117930676A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118093453A (en) | 2024-05-28 |
| CN117951001A (en) | 2024-04-30 |
| CN117971727A (en) | 2024-05-03 |
| CN117775010A (en) | 2024-03-29 |
| CN118011998A (en) | 2024-05-10 |
| CN117971285A (en) | 2024-05-03 |
| CN117389167A (en) | 2024-01-12 |
| CN117990944A (en) | 2024-05-07 |
| CN117930676A (en) | 2024-04-26 |
| CN117755231A (en) | 2024-03-26 |
| CN117990386A (en) | 2024-05-07 |
| CN117951879A (en) | 2024-04-30 |
| CN117755232A (en) | 2024-03-26 |
| CN117970175A (en) | 2024-05-03 |
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