CN112362990A - Device and method for measuring reliability of electronic door lock system - Google Patents

Device and method for measuring reliability of electronic door lock system Download PDF

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Publication number
CN112362990A
CN112362990A CN202011188794.0A CN202011188794A CN112362990A CN 112362990 A CN112362990 A CN 112362990A CN 202011188794 A CN202011188794 A CN 202011188794A CN 112362990 A CN112362990 A CN 112362990A
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Prior art keywords
door lock
electronic door
signal
voltage
measuring
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CN202011188794.0A
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Chinese (zh)
Inventor
张轶凡
许宁
侯维玲
李迎斌
李天兵
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SAIC Volkswagen Automotive Co Ltd
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SAIC Volkswagen Automotive Co Ltd
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Priority to CN202011188794.0A priority Critical patent/CN112362990A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/0078—Shock-testing of vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/003—Environmental or reliability tests
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses

Abstract

The invention relates to the field of automobile test detection, in particular to a device and a method for measuring reliability of an electronic door lock system. The invention provides a reliability measuring device of an electronic door lock system, which comprises a voltage measuring module, a power supply module and a Wheatstone bridge: the Wheatstone bridge is connected with the door lock connector and converts a resistance signal between specific pins of the electronic door lock into a voltage signal based on the Wheatstone bridge principle; the voltage measuring module is used for measuring a voltage signal of the Wheatstone bridge and judging the opening state or the closing state of the electronic door lock according to the voltage signal; the power module supplies power to the Wheatstone bridge. The device and the method for measuring the reliability of the electronic door lock system can effectively judge the opening state and the opening reason of the door lock even if the door lock is not electrified when a trolley collision test is carried out on a vehicle provided with the novel electronic door lock.

Description

Device and method for measuring reliability of electronic door lock system
Technical Field
The invention relates to the field of automobile test detection, in particular to a device and a method for measuring reliability of an electronic door lock system.
Background
At present, a car door lock and a car door holder trolley crash test is carried out according to the national standard, which stipulates that the car door should not be opened accidentally when the car door lock is under the influence of the acceleration required by the longitudinal load, the lateral load and the inertia resistance force of the regulatory provisions. The currently used national standard is GB 15036-2013.
The national standard of trolley collision test is used for preventing passengers from falling from the trolley and causing accidental casualties due to the fact that the trolley door is opened accidentally when a collision accident happens.
The trolley collision test is a national standard test which is set up for verifying whether the design of the door lock system is reliable, and only carries the body and the door of a white body quality control point and relevant metal/nonmetal parts of the door lock system in order to ensure the economy and the repeatability of the test, and no wire harness and a controller are assembled in the test.
When the trolley collision test is carried out, the whole vehicle door system is required to be installed on a test vehicle body as a test sample piece. The trolley system is utilized to push the vehicle body to move with a specific acceleration waveform so as to simulate the anti-collision safety performance of the vehicle door system in the longitudinal direction, the transverse direction and the vertical direction respectively during the actual collision process.
However, as automobile intelligence has been developed, automobile door locks are no longer limited to being opened and closed through traditional mechanical structure transmission, and more vehicles start to use electronic door locks.
The electronic door lock opens/closes the vehicle door by transmission of an electronic signal. The electronic door lock is lighter, enables a passenger to open the door more easily, supports the functions of passenger leaving the vehicle and the like, is more advanced and safer, and is the development trend of the door lock of the vehicle in the future.
However, when the vehicle body using the electronic door lock is used for a trolley collision test, the electronic door lock is in a non-electrified state, namely no signal transmission state, and at the moment, the electronic door lock is always in a locked state, and a vehicle door cannot be opened, so that the vehicle door does not accord with an actual vehicle running state.
Therefore, the conventional test method cannot effectively verify the reliability and safety of the electronic door lock system by performing the trolley collision test under the condition of no power supply.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the reliability of an electronic door lock system, which solve the problem that the reliability of the electronic door lock system in a trolley collision test is difficult to effectively verify and test in the prior art.
In order to achieve the above object, the present invention provides a reliability measuring device for an electronic door lock system, comprising a voltage measuring module, a power supply module and a wheatstone bridge:
the Wheatstone bridge is connected with the door lock connector and converts a resistance signal between specific pins of the electronic door lock into a voltage signal based on the Wheatstone bridge principle;
the voltage measuring module is used for measuring a voltage signal of the Wheatstone bridge and judging the opening state or the closing state of the electronic door lock according to the voltage signal;
the power module supplies power to the Wheatstone bridge.
In one embodiment, the wheatstone bridge includes a first resistor R1, a second resistor R2, and a third resistor R3:
one end of the first resistor R1 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply positive terminal;
one end of the second resistor R2 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply negative terminal;
and one end of the third resistor R3 is connected with a signal positive end SIG +, and the other end of the third resistor R3 is connected with a power supply negative end.
In one embodiment, the electronic door lock has a specific first pin connected with a positive power supply terminal;
and the specific second pin of the electronic door lock is connected with a signal positive terminal SIG +.
In one embodiment, the voltage measuring module is connected with a signal negative terminal SIG-at one end and a signal positive terminal SIG + at the other end, and measures a voltage value V between the signal negative terminal SIG-and the signal positive terminal SIG +M。
In one embodiment, one end of the power module is connected to the positive power terminal, and the other end of the power module is connected to the negative power terminal, so as to supply power to the wheatstone bridge.
In one embodiment, the voltage level of the negative signal terminal SIG-,
Figure BDA0002752126190000021
the voltage value of the positive signal terminal SIG +,
Figure BDA0002752126190000031
the measured value of the voltage measuring module is,
VM＝VSIG+-VSIG-；
wherein R isSAnd V is the output voltage of the power supply module.
In one embodiment, the first resistor R1 and the second resistor R2 have the same resistance.
In order to achieve the above object, the present invention provides a method for measuring reliability of an electronic door lock system, comprising the following steps:
s1, carrying out trolley test;
s2, measuring the resistance between the specific pins of the electronic door lock to obtain a resistance value;
and S3, judging the opening state or the closing state of the electronic door lock according to the resistance value.
In one embodiment, based on the wheatstone bridge principle, a resistance signal between specific pins of the electronic door lock is converted into a voltage signal for measurement, and the opening state or the closing state of the electronic door lock is judged according to the voltage signal.
In an embodiment, the step S3 further includes:
recording a voltage signal curve;
and acquiring the opening state of the electronic door lock in the trolley collision test according to the specific value of the voltage signal.
According to the device and the method for measuring the reliability of the electronic door lock system, provided by the invention, for a vehicle provided with a novel electronic door lock, when a trolley collision test is carried out, the opening state and the opening reason of the door lock can be effectively judged even if the door lock is not electrified.
The invention provides a device and a method for measuring the reliability of an electronic door lock system, which have the following beneficial effects:
1) before the collision test, a complex door control system, a power supply module and the like do not need to be installed on the trolley, so that manpower and material resources are saved, and the assembly efficiency of the test trolley is improved;
2) the circuit device built for the test method has simple structure and light weight, and can be easily protected from being damaged by damping through the adhesive tape in a collision test;
3) based on the principle of a Wheatstone bridge, the experimental result is accurate, the device can be repeatedly used, and the device has good economical efficiency and reliability.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
FIG. 1 is a schematic diagram of an electronic lock connector according to an embodiment of the invention;
FIG. 2a is an equivalent circuit diagram of the electronic door lock in the closed state according to an embodiment of the present invention;
FIG. 2b discloses an equivalent circuit diagram of the inside opening system unlock door lock according to an embodiment of the present invention;
FIG. 2c is an equivalent circuit diagram of an outward opening system unlock door lock according to an embodiment of the present invention;
fig. 3 discloses a circuit diagram of a reliability measuring device of an electronic door lock system according to an embodiment of the invention;
FIG. 4 illustrates a device connection configuration diagram of an electronic door lock system according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for measuring reliability of an electronic door lock system according to an embodiment of the invention;
FIG. 6 is a graph illustrating actual measured signals of an electronic door lock system during a trolley crash test according to an embodiment of the present invention;
FIG. 7 discloses a flow chart of a trolley crash test according to an embodiment of the invention.
The meanings of the reference symbols in the figures are as follows:
310 a voltage measurement module;
320 a power supply module;
330 an electronic lock;
410 a right front door;
411 an external opening handle;
412 an inside opening handle;
413 pulling out the cable;
414 internally pulling a cable;
415 an electronic door lock;
416 a door lock status signal line;
417 a dedicated device;
450 a data acquisition device;
460 detect the device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a device and a method for measuring the reliability of an electronic door lock system, which are mainly used for detecting whether a novel automobile electronic door lock and a door holder are reliable in a trolley collision test.
The reliability measuring device of the electronic door lock system is connected with the electronic door lock and reads specific parameters in the trolley collision process, and in the test process, even if the electronic door lock is always in a locking state under the condition of no power on, whether the electronic door lock is triggered to be opened or not can be judged through the change of the specific electronic parameters of the electronic door lock, so that the reliability of the electronic door lock system is verified.
Fig. 1 shows a schematic structural diagram of an electronic lock Connector according to an embodiment of the invention, such as the electronic lock Connector shown in fig. 1, where Pin2 and Pin4 are two pins on the electronic lock Connector (Connector). The equivalent circuit diagram of the electronic door lock is shown in figures 2a-2 c.
Fig. 2a discloses an equivalent circuit diagram of the electronic door lock in the closed state according to an embodiment of the invention, and as shown in fig. 2a, when the electronic door lock is in the closed state, the switch S22 is in the closed state, and the resistance between the specific pins pin2 and pin4 is 1000 Ω.
Fig. 2b shows an equivalent circuit diagram of the inside opening system door lock according to an embodiment of the present invention, as shown in fig. 2b, when the inside opening system door lock is used to open the door lock, the switches S21 and S22 are in a closed state, and at this time, the resistance between the specific pins pin2 and pin4 is 1000 Ω and 620 Ω in parallel, and the resistance is 383 Ω.
Fig. 2c shows an equivalent circuit diagram of the outward opening system door lock according to an embodiment of the present invention, as shown in fig. 2c, when the outward opening system door lock is used to open the door lock, the switches S22 and S23 are in a closed state, and the resistance between pin2 and pin4 is 1000 Ω and 270 Ω in parallel, and 213 Ω.
Therefore, the opening state and the reason of the electronic door lock can be judged only by detecting the resistance between the specific pins pin2 and pin4 of the electronic door lock in the trolley collision process.
Due to the inconsistent internal circuit definition of each electronic lock, the Pin definition needs to refer to the circuit part in the drawing of the electronic lock.
Table 1 shows the model number of the electronic lock system and the vehicle to which the electronic lock system is known to determine the door lock unlock state by measuring the change in the resistance signal on the connector.
TABLE 1
Vehicle brand Electronic lock model
The public KombiE-Schloss_ModulKFA07/08
Audi (Audi) SemiE-Schloss 2.1_ModulKFA07/08
Lincoln FEB1J0973715
BMW horse FEB1J0973715
The electronic lock model semi E-Schloss 2.1_ ModulKFA07/08 is the electronic door lock system shown in FIG. 1 and FIGS. 2a-2 c.
Measuring the resistance between specific pins of an electronic door lock typically employs a resistance sensor or other similar resistance detection device.
Because the conditions of the trolley collision test are extremely harsh, the acceleration of the trolley can reach 300m/s in the collision process2General resistance sensors and other similar resistance detection devices are easily destroyed.
Therefore, in order to solve the problem of acquiring the resistance signal, the invention provides a reliability measuring device for detecting the unlocking state of the door lock based on the principle of a Wheatstone bridge and the existing data acquisition equipment
Fig. 3 discloses a circuit diagram of a reliability measuring device of an electronic door lock system according to an embodiment of the present invention, and as shown in fig. 3, the reliability measuring device of an electronic door lock system in a trolley crash test according to the present invention includes a voltage measuring module 310, a power supply module 320, and a wheatstone bridge:
the wheatstone bridge is connected with a door lock connector of the electronic lock 330, and based on the wheatstone bridge principle, a resistance signal between specific pins pin2 and pin4 of the electronic lock is converted into a voltage signal;
the voltage measuring module 310 measures a voltage signal of the wheatstone bridge, and judges an open state or a close state of the electronic door lock according to the voltage signal;
the power module 320 supplies power to the wheatstone bridge.
A wheatstone bridge (also called a single-arm bridge) is an instrument that can measure resistance accurately. A Wheatstone bridge is a bridge circuit consisting of 4 resistors, and consists of 4 resistors and a device for measuring the resistance value of one resistor (the resistance values of the other 3 resistors are known). The Wheatstone bridge measures the change of the physical quantity by using the change of the resistance, acquires the voltage at two ends of the variable resistance and processes the voltage, so that the change of the corresponding physical quantity can be calculated, and the method is a measuring mode with high precision.
A Wheatstone bridge comprising a first resistor R1, a second resistor R2 and a third resistor R3,
one end of the first resistor R1 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply positive terminal;
one end of the second resistor R2 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply negative terminal;
and one end of the third resistor R3 is connected with a signal positive end SIG +, and the other end of the third resistor R3 is connected with a power supply negative end.
The specific first pin2 of the electronic door lock is connected with the positive end of a power supply;
the specific second pin4 of the electronic door lock is connected to the positive signal terminal SIG +.
The voltage measurement module 310 has one end connected to the negative signal terminal SIG-, the other end connected to the positive signal terminal SIG +, and measures the voltage V between the negative signal terminal SIG-and the positive signal terminal SIG +M。
The voltage measurement module 310 may use a data acquisition device K3700 MINIDAU or other kind of oscilloscope.
One end of the power module 320 is connected to the positive end of the power supply, and the other end is connected to the negative end of the power supply, so as to supply power to the wheatstone bridge.
In this embodiment, the positive terminal of the power supply is a 5V terminal.
In this embodiment, the negative terminal of the power supply is a 0V terminal.
The voltage value of the signal negative terminal SIG-,
Figure BDA0002752126190000071
the voltage value of the positive signal terminal SIG +,
Figure BDA0002752126190000072
the measured value of the voltage measuring module is,
VM＝VSIG+-VSIG-；
wherein R isSV is an output voltage of the power module, a resistance value between the electronic door lock specific first pin2 and the electronic door lock specific second pin 4.
In the present embodiment, the output voltage V of the power module is 5V.
R1＝R2＝R3＝700Ω。
Can know that VSIG-2.5V, independent of electronic latch status.
Thus, when the electronic door lock is opened by the inward or outward opening system, as RSVariation of (A) VSIG+And will vary accordingly.
The resistance values corresponding to the three states of the electronic door lock are substituted into the formula to obtain the following resistance values:
and (3) closing state: vM＝2.05V–2.5V＝-0.45V
The opening state of the internally opened system: vM＝3.25V–2.5V＝+0.75V
Open system open state: vM＝3.83V–2.5V＝+1.33V
When the electronic door lock system is opened, the measured value V of the voltage measuring moduleMA transient negative to positive mutation occurs.
Fig. 4 is a diagram showing the connection structure of the electronic door lock system according to an embodiment of the present invention, in which the electronic door locks are installed in the front left door, the front right door, the rear left door and the rear right door, and as shown in fig. 4, the front right door 410 is used as a row, the outside handle 411 is connected to the electronic door lock 415 through the outside opening cable 413, the inside handle 412 is connected to the electronic door lock 415 through the inside opening cable 414, the electronic door lock 415 is connected to the exclusive device 417 through the door lock state signal line 416, and the exclusive device 417 is connected to the data acquisition device 450.
In the embodiment shown in fig. 4, the dedicated device 417 is an electronic door lock system reliability measuring device provided by the present invention, and acquires and converts the resistance signal between specific pins of the electronic door lock 415 through the door lock state signal line 416, and sends the generated voltage signal to the data acquisition device 450 for data acquisition, and records a voltage signal curve.
The detection device 460 is connected to the data acquisition device 450, and can distinguish the opening reason of the electronic door lock 415 according to the specific value of the voltage signal, thereby determining whether the door opening system is qualified or failure reason.
Furthermore, the invention provides a method for measuring the reliability of the electronic door lock system.
Fig. 5 discloses a flowchart of a method for measuring reliability of an electronic door lock system according to an embodiment of the present invention, where the method for measuring reliability of an electronic door lock system shown in fig. 5 includes the following steps:
s1, carrying out trolley test;
s2, measuring the resistance between the specific pins of the electronic door lock to obtain a resistance value;
and S3, judging the opening state or the closing state of the electronic door lock according to the resistance value.
When the reliability measuring device of the electronic door lock system provided by the invention is used for measuring, a resistance signal between specific pins of the electronic door lock is converted into a voltage signal for measuring through a Wheatstone bridge principle, and the opening state or the closing state of the electronic door lock is judged according to the voltage signal.
The voltage measuring module detects V of the Wheatstone bridge circuitMValues and curves were recorded using data acquisition software.
Fig. 6 is a graph showing an actual measurement signal of the electronic door lock system in the trolley collision test according to an embodiment of the present invention, as shown in fig. 6, where a curve 1 shows that the electronic door lock is in a closed state and a measurement value V of the voltage measurement moduleMis-0.45V;
curve 2 is the measured value V of the voltage measuring module when the electronic door lock is opened by the inward opening systemMIs + 0.75V;
curve 3 is the measured value V of the voltage measuring module when the electronic door lock is opened by the external opening systemMIs + 1.33V;
the opening state of the electronic door lock in the trolley collision test can be known according to the voltage signal curve.
The opening reason of the electronic door lock can be distinguished according to the specific value of the voltage signal, so that whether the vehicle door opening system is qualified or failure reasons is judged.
Fig. 7 shows a flowchart of a trolley collision test according to an embodiment of the present invention, and as shown in fig. 7, the trolley collision test flowchart using the electronic door lock in fig. 1 and 2 and the measuring device in fig. 3 specifically includes the following steps:
opening the test software;
configuring parameters such as a measurement channel;
starting a trolley collision experiment, and setting the acceleration as 30 g;
judging the state of the measuring channel, taking the measuring channel 1 as an example, and taking the measuring channel 1 as a left front door;
judging whether the measured voltage changes from negative to positive, if not, effectively keeping the electronic door lock system, and ending the process;
if yes, the electronic door lock system is invalid;
judging whether the measured voltage value is less than 1, if so, failing to open the system in the left front door, and ending the process, wherein the corresponding voltage measurement value is 0.75V;
if not, the left front door outward opening system fails, the corresponding voltage measurement value is 1.33V, and the process is ended.
According to the device and the method for measuring the reliability of the electronic door lock system, provided by the invention, for a vehicle provided with a novel electronic door lock, when a trolley collision test is carried out, the opening state and the opening reason of the door lock can be effectively judged even if the door lock is not electrified.
The invention provides a device and a method for measuring the reliability of an electronic door lock system, which have the following beneficial effects:
1) before the collision test, a complex door control system, a power supply module and the like do not need to be installed on the trolley, so that manpower and material resources are saved, and the assembly efficiency of the test trolley is improved;
2) the circuit device built for the test method has simple structure and light weight, and can be easily protected from being damaged by damping through the adhesive tape in a collision test;
3) based on the principle of a Wheatstone bridge, the experimental result is accurate, the device can be repeatedly used, and the device has good economical efficiency and reliability.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through intervening agents, or may be internally connected to the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.

Claims (10)

1. The utility model provides an electronic lock system reliability measuring device which characterized in that, voltage measurement module, power module and wheatstone bridge:
the Wheatstone bridge is connected with the door lock connector and converts a resistance signal between specific pins of the electronic door lock into a voltage signal based on the Wheatstone bridge principle;
the voltage measuring module is used for measuring a voltage signal of the Wheatstone bridge and judging the opening state or the closing state of the electronic door lock according to the voltage signal;
the power module supplies power to the Wheatstone bridge.
2. The electronic door lock system reliability measuring device of claim 1, wherein the wheatstone bridge comprises a first resistor R1, a second resistor R2, and a third resistor R3:
one end of the first resistor R1 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply positive terminal;
one end of the second resistor R2 is connected with a signal negative terminal SIG-, and the other end is connected with a power supply negative terminal;
and one end of the third resistor R3 is connected with a signal positive end SIG +, and the other end of the third resistor R3 is connected with a power supply negative end.
3. The electronic lock system reliability measuring device according to claim 2, wherein:
the specific first pin of the electronic door lock is connected with the positive end of a power supply;
and the specific second pin of the electronic door lock is connected with a signal positive terminal SIG +.
4. The device for measuring the reliability of an electronic door lock system according to claim 3, wherein the voltage measuring module is connected to a negative signal terminal SIG-at one end and to a positive signal terminal SIG + at the other end, and measures the voltage V between the negative signal terminal SIG-and the positive signal terminal SIG +M。
5. The electronic door lock system reliability measuring device of claim 4, wherein one end of the power supply module is connected with a positive power supply terminal, and the other end of the power supply module is connected with a negative power supply terminal, so as to supply power to a Wheatstone bridge.
6. The electronic lock system reliability measuring device according to claim 5, wherein:
the voltage value of the signal negative terminal SIG-,
Figure FDA0002752126180000021
the voltage value of the positive signal terminal SIG +,
Figure FDA0002752126180000022
the measured value of the voltage measuring module is,
VM＝VSIG+-VSIG-；
wherein R isSAnd V is the output voltage of the power supply module.
7. The electronic door lock system reliability measuring device according to claim 6, wherein the first resistor R1 and the second resistor R2 have the same resistance.
8. A reliability measuring method of an electronic door lock system is characterized by comprising the following steps:
s1, carrying out trolley test;
s2, measuring the resistance between the specific pins of the electronic door lock to obtain a resistance value;
and S3, judging the opening state or the closing state of the electronic door lock according to the resistance value.
9. The electronic door lock system reliability measuring method according to claim 8, wherein: based on the Wheatstone bridge principle, a resistance signal between specific pins of the electronic door lock is converted into a voltage signal for measurement, and the opening state or the closing state of the electronic door lock is judged according to the voltage signal.
10. The method for measuring reliability of an electronic door lock system according to claim 9, wherein the step S3 further comprises:
recording a voltage signal curve;
and acquiring the opening state of the electronic door lock in the trolley collision test according to the specific value of the voltage signal.
CN202011188794.0A 2020-10-30 2020-10-30 Device and method for measuring reliability of electronic door lock system Pending CN112362990A (en)

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CN113721091A (en) * 2021-08-16 2021-11-30 北京京东乾石科技有限公司 Access control module testing device and testing method thereof

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