Current clamp device

Abstract

The utility model discloses a current clamp device which is characterized by comprising a first current clamp which is used for being connected with a storage battery on a truck when a function test is carried out on the truck; the second current clamp is used for being clamped on the power supply line when the function test is carried out on the truck; the electronic device comprises a shell, a measuring module and a communication module, the measuring module and the communication module are both arranged in the shell, the measuring module is connected with the first current clamp and the second current clamp, and the communication module is electrically connected with the measuring module. The measuring module is used for detecting the working current of the to-be-detected electric appliance and the output voltage of the storage battery after the to-be-detected electric appliance is started; and the communication module is used for sending the working current and the output voltage to external equipment. By adopting the current clamp equipment, all electrical appliances needing to be tested on the truck can be automatically detected, manpower and time can be saved, the detection reliability can be ensured, the quality of the truck can be improved, and safety accidents can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a current clamp device. Background Art

[0002] There are various electrical appliances on a truck, and their functions are diverse, which is very important for ensuring driving safety. Therefore, when the truck is on the production line, it is necessary to detect the electrical appliances on the truck. Since the number of electrical appliances is large, when manually detecting each electrical appliance one by one, the efficiency is low, wasting manpower and time. Moreover, when the operator conducts the detection, the data manually recorded is not accurate enough, making it difficult to ensure the reliability of the detection. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a current clamp device. By using this current clamp device, through the mutual cooperation of the current clamp device and an external device, all the electrical appliances on the truck that need to be tested can be automatically detected, which can not only save manpower and time, but also ensure the reliability of the detection, improve the quality of the truck, and avoid safety accidents.

[0004] To solve the above problems, an embodiment of the first aspect of the utility model provides a current clamp device, including: a first current clamp, which is used to connect to the battery on the truck when conducting a function test on the truck; a second current clamp, which is used to clamp onto the power supply line when conducting a function test on the truck, and the power supply line is the wire harness connecting the battery and the electrical appliances to be tested on the truck; an electronic device, which includes a housing, a measurement module and a communication module. The measurement module and the communication module are both arranged in the housing. The measurement module is connected to the first current clamp and the second current clamp, and the communication module is electrically connected to the measurement module. The measurement module is used to detect the working current of the electrical appliance to be tested and the output voltage of the battery after the electrical appliance to be tested is started, and the communication module is used to send the working current and the output voltage to an external device.

[0005] According to the current clamp device of the embodiment of the utility model, after the first current clamp is connected to the battery on the truck and the second current clamp is connected to the electrical appliance to be tested on the truck, through the mutual cooperation of the current clamp device and an external device, the output voltage of the battery and the working current of the electrical appliance to be tested can be automatically detected and sent to the communication module, and the communication module sends the output voltage and the working current to an external device. Thus, through the external device, the output voltage and the working current can be analyzed and processed to complete the function test of the truck, realizing the detection of all the electrical appliances on the truck that need to be detected, which can not only save manpower and time, but also ensure the reliability of the detection, improve the quality of the truck, and avoid safety accidents.

[0006] In some embodiments, the electronic device further includes a display screen, and the display screen is disposed on the housing.

[0007] In some embodiments, the electronic device further includes a power key, a zero key, an I / U selection key, and an information operation key, and the power key, the zero key, the I / U selection key, and the information operation key are all disposed on the housing.

[0008] In some embodiments, the electronic device further includes: a switch status indicator disposed on the housing for indicating the switch operation status of the current clamp device; a network strength indicator disposed on the housing for indicating the network strength between the communication module and an external device.

[0009] In some embodiments, the power key, the zero key, the I / U selection key, and the information operation key all adopt a membrane keyboard.

[0010] In some embodiments, a first connection port and a second connection port are disposed on the housing. The first connection port is detachably connected to the first current clamp through a cable, and the second connection port is detachably connected to the second current clamp through a cable; the electronic device further includes a first protective cover, and the first protective cover is disposed in a matching manner with the first connection port and / or the second connection port.

[0011] In some embodiments, the electronic device further includes: a service interface disposed on the housing, and the service interface is used to connect an external software configuration device, and the software configuration device is used to perform software update and system configuration for the current clamp device.

[0012] In some embodiments, the service interface includes a USB interface and a serial communication interface.

[0013] In some embodiments, the electronic device further includes a second protective cover, and the second protective cover is disposed in a matching manner with the service interface.

[0014] In some embodiments, the electronic device further includes: a power supply module disposed inside the housing, and the power supply module is used to supply power to the current clamp device; a charging status indicator disposed on the housing, and the charging status indicator is used to indicate the charging status of the power supply module.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 is a structural block diagram of a current clamp device according to an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of a current clamp device according to another embodiment of the present utility model;

[0019] Figure 3 is a schematic connection diagram between an electrical appliance to be measured and a storage battery according to the present utility model;

[0020] Figure 4 is a schematic diagram of a current clamp device according to another embodiment of the present utility model;

[0021] Figure 5 is a flowchart of a function test method according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] Current clamp device 10;

[0024] Electronic device 40;

[0025] Measurement module 2; Communication module 3; Power supply module 4; First current clamp 5; Second current clamp 6; Housing 7;

[0026] Positive electrode of the first current clamp 51; Negative electrode of the first current clamp 52. Detailed implementation manners

[0027] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present utility model will be described in detail below.

[0028] Reference will be made below to Figure 1 Describe the current clamp device 10 according to an embodiment of the present utility model. As Figure 1 shown, the current clamp device 10 includes a first current clamp 5, a second current clamp 6, and an electronic device 40. The electronic device 40 includes a housing 7, a measurement module 2, and a communication module 3.

[0029] Among them, the first current clamp 5 is used to connect with the battery on the truck during the functional test of the truck; the second current clamp is used to clamp onto the power supply line during the functional test of the truck, and the power supply line is the wire harness connected between the battery and the electrical appliance to be tested on the truck; both the measurement module 2 and the communication module 3 are arranged in the housing 7. The measurement module 2 is connected to the first current clamp 5 and the second current clamp 6, and the communication module 3 is electrically connected to the measurement module 2. The measurement module 2 is used to detect the working current of the electrical appliance to be tested and the output voltage of the battery after the electrical appliance to be tested is started, and the communication module 3 is used to send the working current and the output voltage to an external device.

[0030] Specifically, during the functional test of the truck, the first current clamp 5 of the present application is connected to the battery on the truck, and the second current clamp 6 is connected to the electrical appliance to be tested on the truck. Thus, the measurement module 2 can detect the output voltage of the battery through the first current clamp 5, detect the working current of the electrical appliance to be tested through the second current clamp 6, and send the output voltage and the working current to the communication module 3. The communication module 3 sends the output voltage and the working current to an external device such as a diagnostic device for vehicles. Thus, the output voltage and the working current can be analyzed and processed through the external device to complete the functional test of the truck and realize the detection of all the electrical appliances that need to be detected on the truck. It should be noted that the whole process can be automatically carried out after the first current clamp is connected to the battery on the truck and the second current clamp is connected to the electrical appliance to be tested on the truck.

[0031] Exemplarily, refer to Figure 2 or Figure 3As shown, the first current clamp 5 includes a first current clamp positive electrode 51 and a first current clamp negative electrode 52. Among them, the first current clamp positive electrode 51 is used to connect to the positive terminal + of the battery on the truck, and the first current clamp negative electrode 52 is used to connect to the negative terminal - of the battery on the truck, so as to complete the detection of the output voltage of the battery by the first current clamp 5; the battery on the truck is connected to the electrical appliance through the power supply wire harness to supply power to the electrical appliance. Specifically, one end of the electrical appliance is connected to the positive terminal + of the battery through the positive power supply wire harness, and the other end of the electrical appliance is connected to the negative terminal - of the battery through the negative power supply wire harness. Based on this, when detecting the electrical appliance, the loop structure design of the second current clamp 6 can be clamped on the negative power supply wire harness to measure the working current of the electrical appliance to be tested through electromagnetic induction. Among them, using the loop structure to stably clamp the power supply wire harness can reduce the movement of the power supply wire harness during the acquisition process, ensure the accuracy and stability of the current measurement. At the same time, the design of the loop structure makes the installation and disassembly of the power supply wire harness simple and fast. While clamping the power supply wire harness, the loop structure can also play a certain protective role to avoid damage to the power supply wire harness during the acquisition process. According to the current clamp device 10 of the embodiment of the present invention, after the first current clamp 5 is connected to the battery on the truck and the second current clamp 6 is connected to the electrical appliance to be tested on the truck, the current clamp device and the external device can cooperate with each other to automatically detect the output voltage of the battery and the working current of the electrical appliance to be tested and send them to the communication module, and the communication module 3 sends the output voltage and the working current to the external device, so that the output voltage and the working current can be analyzed and processed by the external device to complete the function test of the truck and realize the detection of all the electrical appliances that need to be detected on the truck, which can not only save manpower and time, but also ensure the reliability of the detection, improve the quality of the truck and avoid safety accidents.

[0032] In some embodiments, the electronic device 40 further includes a display screen, and the display screen is disposed on the housing.

[0033] Specifically, after the measurement module 2 detects the output voltage of the battery through the first current clamp 5 or detects the working current of the electrical appliance to be tested through the second current clamp 6, it can display the output voltage or the working current on the display screen. The start-up information of the current clamp device can also be obtained through the display screen. For example, the display screen is a two-line LCD screen. When starting the current clamp device, if the two-line LCD screen displays a value, it means that the current clamp device has been started successfully.

[0034] Among them, the configuration settings of the measurement module 2 can also be displayed through the display screen. For example, the IP address, MAC address, etc. are displayed through the display screen, and no specific limitation is made here.

[0035] In some embodiments, the electronic device further includes a power-on key, a zero key, an I / U selection key, and an information operation key, and the power-on key, the zero key, the I / U selection key, and the information operation key are all disposed on the housing 7.

[0036] Specifically, the power switch is used to turn on the current clamp device 10, the zero key is used to zero the measurement module 2 to ensure accurate measurement when detecting the working current of the electrical appliance under test and the output voltage of the battery. The I / U selection key is used to switch the measurement mode of the measurement module. For example, when the I / U selection key is set to I, the measurement module 2 detects the working current of the electrical appliance under test through the second current clamp; or when the I / U selection key is set to U, the measurement module 2 detects the output voltage of the battery through the first current clamp.

[0037] In some embodiments, as Figure 4 shown, the electronic device 40 further includes a switch status indicator light and a network strength indicator light. The switch status indicator light is disposed on the housing 7 and is used to indicate the switch operation status of the current clamp device 10; the network strength indicator light is disposed on the housing 7 and is used to indicate the network strength between the communication module 3 and an external device.

[0038] Exemplarily, after pressing the power switch for 1 s, the current clamp device 10 is turned on. The flashing of the switch status indicator light indicates that the current clamp device 10 is starting up. If the switch status indicator light is constantly on, it means that the current clamp device 10 has been started up successfully. If there is no operation within the preset time set by the user, the switch status indicator light goes out, and at this time, the current clamp device 10 enters the standby mode. Herein, the preset time can be 8 s, 9 s, 10 s, etc., and no specific limitation is made here.

[0039] In some embodiments, the power switch, the zero key, the I / U selection key, and the information operation key all adopt a membrane keyboard.

[0040] Specifically, the tester can directly operate the power switch, the zero key, the I / U selection key, and the information operation key through the membrane keyboard.

[0041] In some embodiments, the housing 7 is provided with a first connection port and a second connection port. The first connection port is detachably connected to the first current clamp 5 through a cable, and the second connection port is detachably connected to the second current clamp 6 through a cable; the electronic device 40 further includes a first protective cover, and the first protective cover is matched with the first connection port and / or the second connection port.

[0042] Specifically, referring to Figure 3 shown, the housing 7 is provided with a first connection port and a second connection port. Among them, the first protective cover is matched with the first connection port and / or the second connection port and is used to protect the interface when there is no cable connection to the first connection port and / or the second connection port, so as to avoid damage to the interface.

[0043] In some embodiments, the electronic device 40 further includes a service interface. The service interface is disposed on the housing 7 and is used to connect to an external software configuration device. The software configuration device is used to perform software update and system configuration for the current clamp device 10.

[0044] Specifically, when the current clamp device 10 needs to perform software updates and / or system configurations, an external software configuration device is connected to the current clamp device through a service interface, so that the software updates and / or system configurations of the current clamp device 10 can be performed. Among them, the service interface can be various types of interfaces, such as a USB interface, and no specific limitation is made here.

[0045] In some embodiments, the service interface includes a USB interface and a serial communication interface.

[0046] In some embodiments, the electronic device 40 further includes a second protective cover, and the second protective cover is arranged to match the service interface.

[0047] Specifically, the second protective cover is arranged to match the service interface, and is used to protect the interface to avoid damage when there is no external software configuration device connected to the service interface.

[0048] In some embodiments, as Figure 1 shown, the electronic device 40 further includes a power supply module 4, as Figure 4 shown, the electronic device 40 includes, among which, the power supply module is arranged in the housing 7 and is used to supply power to the current clamp device 10; the charging status indicator is arranged on the housing and is used to indicate the charging status of the power supply module 4.

[0049] Specifically, when there is no external device to supply power to the current clamp device 10, the power supply module 4 is used to supply power to the current clamp device 10, which can ensure that the current clamp device 10 can be used normally. And when there is an external device to supply power to the current clamp device 10, the external device can charge the power supply module 4, and the charging status indicator indicates the charging status of the power supply module 4.

[0050] Next, based on the above current clamp device, a method for performing functional tests using the current clamp device will be described. As Figure 5 shown, the method at least includes steps S1 - S4, specifically as follows:

[0051] Step S1, under the condition that the diagnostic device is electrically connected to the truck, send a connection prompt message about the current clamp device.

[0052] Specifically, after the diagnostic device 20 is electrically connected to the truck, it sends a signal to control the truck to power off and sends a connection prompt message about the current clamp device 10, prompting that the current clamp 1 can be connected, so as to avoid danger caused by connecting the current clamp 1 when it is powered on.

[0053] Step S2. After determining that the current clamp device meets the test conditions, control the truck to power on and control the electrical appliance under test to start.

[0054] Specifically, after determining that the current clamp device 10 meets the test conditions, the diagnostic module 20 controls the truck to power on and sends a signal to control the electrical appliance under test to start, and the battery powers the electrical appliance under test.

[0055] Step S3: Obtain the working current of the electrical appliance under test and the output voltage of the battery on the truck.

[0056] Specifically, the measurement module 2 measures the working current of the electrical appliance under test and the output voltage of the battery, and sends the working current and the output voltage to the diagnostic device 20 through the communication module 3. The diagnostic device 20 identifies the functional state of the electrical appliance under test through the analysis and processing of the working current and the output voltage.

[0057] Step S4: Identify the functional state of the electrical appliance under test according to the working current and / or the output voltage.

[0058] Specifically, by comparing the working current and / or the output voltage with the working current and / or the output voltage when the electrical appliance under test is working properly, the functional state of the electrical appliance under test is identified, thereby realizing the detection of the electrical appliance under test. Among them, for identifying the functional state of the electrical appliance under test, according to the different detection requirements of the electrical appliance under test, the working current and / or the output voltage are selected for identification.

[0059] According to the functional test method of the embodiment of the present invention, after the diagnostic device 20 is electrically connected to the truck and it is determined that the current clamp device 10 meets the test conditions, it can control the truck to power on and control the electrical appliance under test to start, and the truck battery powers the electrical appliance under test, so that the functional state of the electrical appliance under test can be identified according to the working current and / or the output voltage, thereby realizing the detection of all the electrical appliances that need to be detected on the truck, and the whole process can automatically identify the functional state of the electrical appliance under test, realizing automatic detection, which can not only save manpower and time, but also ensure the reliability of the detection and improve the safety of the truck.

[0060] In some embodiments, the test conditions include that the current clamp device, the battery on the truck, and the electrical appliance under test are all in a connected state and the current clamp device has been zeroed.

[0061] Specifically, after determining that the current clamp device 10 meets the test conditions, that is, the current clamp 1, the battery on the truck, and the electrical appliance under test are all in a connected state and the measurement module 2 has completed the zeroing operation to ensure accurate measurement when detecting the working current of the electrical appliance under test and the output voltage of the battery, the diagnostic module 20 controls the truck to power on and sends a signal to control the electrical appliance under test to start, and the battery powers the electrical appliance under test.

[0062] In some embodiments, the electrical appliance to be tested is a generator or an air-conditioning fan. The functional state of the electrical appliance to be tested is identified according to the working current and / or the output voltage, including: if the working current is within the standard working current range of the electrical appliance to be tested, the functional state of the electrical appliance to be tested is identified as normal; if the working current is not within the standard working current range of the electrical appliance to be tested, the functional state of the electrical appliance to be tested is identified as abnormal.

[0063] Specifically, the current when each electrical appliance to be tested works normally, that is, the standard working current range, is written in advance in the program of this method. When detecting the electrical appliance to be tested, the diagnostic device 20 can obtain the working current of the electrical appliance to be tested detected by the measurement module through the communication module 3, and identify the functional state of the electrical appliance to be tested by judging whether the working current is within the standard working current range. For example, when the working current is within the standard working current range of the electrical appliance to be tested, the functional state of the electrical appliance to be tested is identified as normal; if the working current is not within the standard working current range of the electrical appliance to be tested, the functional state of the electrical appliance to be tested is identified as abnormal.

[0064] Exemplarily, when the electrical appliance to be tested is a generator, the standard working current range can be set to 20A - 95A. Then the detection module 2 detects the working current of the generator and sends the working current to the diagnostic device 20 through the communication module 3. If the diagnostic device 20 judges that the working current is within 20A - 95A, the functional state of the generator is identified as normal; if the diagnostic device 20 judges that the working current is not within 20A - 95A, the functional state of the generator is identified as abnormal. For the electrical appliance to be tested being an air-conditioning fan, reference can be made to the case where the electrical appliance to be tested is a generator, and details are not described here.

[0065] In some embodiments, the electrical appliance to be tested is a vehicle lamp. The working current includes a first current after the vehicle lamp is turned on and a second current after the vehicle lamp is turned off. The functional state of the electrical appliance to be tested is identified according to the working current and / or the output voltage, including calculating the current difference between the first current and the second current; if the current difference is within the standard current difference range, it is determined that the functional state of the vehicle lamp is normal; if the current difference is not within the standard current difference range, it is determined that the functional state of the vehicle lamp is abnormal.

[0066] Specifically, the current difference when the vehicle lamp works normally, that is, the standard current difference range, is written in advance in the program of this method. When detecting the electrical appliance to be tested, the diagnostic device 20 can obtain the first current after the vehicle lamp is turned on and the second current after the vehicle lamp is turned off detected by the measurement module through the communication module 3, and calculate the current difference between the first current and the second current, and determine the functional state of the vehicle lamp by judging whether the current difference is within the standard current difference range. For example, if the current difference is within the standard current difference range, it is determined that the functional state of the vehicle lamp is normal; if the current difference is not within the standard current difference range, it is determined that the functional state of the vehicle lamp is abnormal.

[0067] Exemplarily, when the vehicle lamp is the high beam lamp, the standard current difference range can be set to 1A - 5A. Then, the detection module 2 detects the first current after the high beam lamp is started and the second current after the high beam lamp is turned off, and sends the first current and the second current to the diagnostic device 20 through the communication module 3. The diagnostic device 20 calculates the difference between the first current and the second current. If the diagnostic device 20 determines that the current difference is within 1A - 5A, the functional state of the high beam lamp is identified as normal; if the diagnostic device 20 determines that the current difference is not within 1A - 5A, the functional state of the generator is identified as abnormal. Among them, the standard current difference range can be set according to different actual situations, and no specific limitation is made here. For example, when the vehicle lamp is the turn signal lamp, the standard current difference range is 0.7A - 1.5A; when the vehicle lamp is the daytime running lamp, the standard current difference range is 0.25A - 1A; when the vehicle lamp is the fog lamp, the standard current difference range is 2A - 5A; when the vehicle lamp is the low beam lamp, the standard current difference range is 0.5A - 5A; when the vehicle lamp is the rear working lamp, the standard current difference range is 2A - 5A; when the vehicle lamp is the left and right brake change lamp, the standard current difference range is 0.25A - 1A; when the vehicle lamp is the daytime running lamp, the standard current difference range is 0.7A - 1.5A.

[0068] In some embodiments, the functional test method further includes that if the diagnostic device identifies the functional state as abnormal in consecutive preset times, the identification operation will be stopped and a functional abnormality message will be sent.

[0069] Specifically, to ensure the reliability of the detection of the electrical appliance to be tested, the diagnostic device 20 will detect the electrical appliance to be tested multiple times. If the functional state is identified as abnormal in consecutive preset times, it indicates that there is a fault in the electrical appliance to be tested. Then, the identification operation will be stopped and a functional abnormality message will be sent, so that the detection personnel can directly receive the functional abnormality message.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A current clamp device, characterized in that, Including: A first current clamp, which is used to connect to the battery on the truck during the functional test of the truck; A second current clamp, which is used to clamp onto the power supply wire during the functional test of the truck. The power supply wire is the wire harness connected between the battery and the electrical appliance to be tested on the truck; An electronic device, which includes a housing, a measurement module and a communication module. The measurement module and the communication module are both arranged in the housing. The measurement module is connected to the first current clamp and the second current clamp. The communication module is electrically connected to the measurement module. The measurement module is used to detect the working current of the electrical appliance to be tested and the output voltage of the battery after the electrical appliance to be tested is started. The communication module is used to send the working current and the output voltage to an external device.

2. The current clamp device according to claim 1, characterized in that, The electronic device further includes a display screen, which is arranged on the housing.

3. The current clamp device according to claim 1, characterized in that, The electronic device further includes a power switch key, a zeroing key, an I / U selection key and an information operation key. The power switch key, the zeroing key, the I / U selection key and the information operation key are all arranged on the housing.

4. The current clamp device according to claim 3, wherein, The electronic device further includes: A switch status indicator light, which is arranged on the housing and is used to indicate the switch operation status of the current clamp device; A network strength indicator light, which is arranged on the housing and is used to indicate the network strength between the communication module and the external device.

5. The current clamp device according to claim 3, characterized in that, The power switch key, the zeroing key, the I / U selection key and the information operation key all adopt a membrane keyboard.

6. The current clamp device according to claim 1, wherein A first connection port and a second connection port are arranged on the housing. The first connection port is detachably connected to the first current clamp through a cable, and the second connection port is detachably connected to the second current clamp through a cable; The electronic device further includes a first protective cover, which is arranged in a matching manner with the first connection port and / or the second connection port.

7. The current clamp device according to claim 1, characterized in that, The electronic device further includes: A service interface, which is arranged on the housing. The service interface is used to connect to an external software configuration device, and the software configuration device is used to perform software update and system configuration for the current clamp device.

8. The current clamp device according to claim 7, characterized in that The service interface includes a USB interface and a serial communication interface.

9. The current clamp device according to claim 7, characterized in that, The electronic device further includes a second protective cover, which is arranged in a matching manner with the service interface.

10. The current clamp device according to any one of claims 1-9, characterized in that, The electronic device further includes: A power supply module, which is arranged in the housing and is used to supply power to the current clamp device; A charging status indicator light, which is arranged on the housing and is used to indicate the charging status of the power supply module.

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