Data acquisition recording device
By combining clamp-on current transformers and integrated protection devices, the problems of cumbersome operation and insufficient accuracy in traditional electrical parameter acquisition are solved, enabling convenient and accurate monitoring of current and voltage signals of multiple electrical devices, suitable for portable and long-term data acquisition.
Patent Information
- Application Number
- CN202422976393.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing technologies require current transformers to be connected to the circuit of electrical equipment when collecting electrical parameters. This is cumbersome, and traditional equipment is not accurate enough to measure the circuit data of multiple electrical devices at the same time. In addition, the equipment is expensive or not easy to carry.
The system employs clamp-on current transformers and integrated protection devices. The clamp-on current transformers detect external current loops and convert them into voltage signals, while the integrated protection devices receive and process signals from multiple electrical devices, enabling multi-channel measurement and portability.
It enables convenient monitoring of current and voltage signals from multiple electrical devices, improves measurement accuracy, is portable, suitable for long-term data acquisition, and reduces equipment costs.
Smart Images
Figure CN223597759U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrical detection technical field, especially relate to a data acquisition recording device. BACKGROUND
[0002] In the electrical equipment field, generally through the collection electrical parameter of electrical equipment realizes the detection to electrical equipment, in order to carry out debugging or fault handling to electrical equipment.
[0003] The current collection electrical parameter of electrical equipment method is generally through multimeter, recording appearance or oscilloscope detection, and the traditional measurement method needs to access the current transformer to the electrical equipment loop, can realize data acquisition, and this collection mode is very inconvenient.
[0004] And the measurement precision of traditional multimeter is not enough, and it is difficult to measure the circuit data of multiple electrical equipment simultaneously, and although the recording appearance is complete in function, but the price is expensive and not easy to carry, and the oscilloscope is not suitable for long time data acquisition, and it is difficult to meet the user demand. UTILITY MODEL CONTENT
[0005] The utility model embodiment provides a kind of data acquisition recording device, which can also realize multiway measurement while being convenient to carry.
[0006] In a first aspect, the utility model embodiment provides a kind of data acquisition recording device, and the data acquisition recording device includes: at least one clamp-on current transformer, the clamp-on current transformer includes detection site for detecting external current loop and sampling resistance, in the state where external current loop passes through detection site, clamp-on current transformer generates detection signal, and sampling resistance is configured to convert detection signal into voltage signal;Integrated protection device, clamp-on current transformer is electrically connected with integrated protection device, and integrated protection device is configured to receive detection signal and voltage signal.
[0007] The data acquisition recording device of the utility model embodiment detects external current loop by clamp-on current transformer and generates detection signal, and sampling resistance can convert detection signal into voltage signal. By passing the current loop of electrical equipment through the detection site formed by clamp-on current transformer, the voltage signal of electrical equipment can be monitored conveniently and quickly, and integrated protection device can obtain the detection signal and voltage signal of multiple electrical equipment to realize simultaneous detection of multiple electrical equipment. And because the clamp-on current transformer is small in size, the data acquisition recording device is convenient to carry while realizing multiway measurement.
[0008] Optionally, the integrated protection device includes a plurality of collection ports, the collection ports are electrically connected with the clamp-on current transformer, and the integrated protection device is configured to receive the detection signal and voltage signal through the collection ports and display the detection signal and voltage signal.
[0009] Optionally, the comprehensive protection device further comprises an adjuster configured to adjust the amplitude correction coefficient of the comprehensive protection device.
[0010] Optionally, the comprehensive protection device further comprises a monitoring terminal electrically connected to the DC power terminal of the comprehensive protection device, the monitoring terminal being arranged on the outer surface of the comprehensive protection device, and an external device being capable of detecting the switching quantity of the comprehensive protection device through the monitoring terminal.
[0011] Optionally, the clamp-on current transformer comprises a clamp-on core and an induction coil, the sampling resistor being connected in parallel with the induction coil, the induction coil being arranged around the clamp-on core and electrically connected to the comprehensive protection device, and the clamp-on core forming a detection position in the closed state.
[0012] Optionally, the data acquisition and recording device further comprises a resistance box electrically connected to the comprehensive protection device, the resistance box being configured to adjust the resistance in the circuit connected to the comprehensive protection device so as to increase the input voltage amplitude of the acquisition port.
[0013] Optionally, the data acquisition and recording device further comprises an output terminal electrically connected to the comprehensive protection device, an external device being capable of obtaining the detection signal and the voltage signal through the output terminal.
[0014] Optionally, the comprehensive protection device further comprises a display screen arranged on the outer surface of the comprehensive protection device, the display screen being configured to display the detection signal and the voltage signal.
[0015] Optionally, the comprehensive protection device further comprises a processing circuit and a plurality of control buttons arranged on the outer surface of the comprehensive protection device, the processing circuit being electrically connected to the clamp-on current transformer and the control buttons, and the control buttons being capable of adjusting the parameters of the clamp-on current transformer and / or the comprehensive protection device in the triggered state.
[0016] Optionally, the plurality of control buttons comprises a reset button, the comprehensive protection device being capable of resetting to a normal operating state in the triggered state of the reset button. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.
[0018] Figure 1 FIG. 1 is a structural schematic view of an embodiment of the data acquisition and recording device of the present application;
[0019] Figure 2The current measurement circuit diagram of the existing detection device;
[0020] Figure 3 The structural block diagram of an embodiment of the data acquisition recording device of the utility model;
[0021] Figure 4 The dynamic debugging data schematic diagram of the SOLCON soft starter of the data acquisition recording device of the utility model at the initial stage of starting;
[0022] Figure 5 The dynamic debugging data schematic diagram of the SOLCON soft starter of the data acquisition recording device of the utility model at the stopping time.
[0023] Explanation of the reference signs:
[0024] 100-data acquisition recording device;
[0025] 110-pincer current transformer; 111-pincer core; 112-induction coil; A1-detection position; R1-sampling resistor;
[0026] 120-comprehensive protection device; 121-regulator; 122-monitoring terminal; 123-direct current power supply end; 124-display screen; 125-control button; 126-processing circuit; M1-acquisition port;
[0027] 130-resistance box;
[0028] 140-output terminal;
[0029] 200-current transformer. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0031] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indications also change accordingly.
[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.
[0033] Figure 1 It is a structural schematic view of an embodiment of the data acquisition recording device of the present application; Figure 2 It is a current measurement circuit diagram of the existing detection device. In the embodiment of the present application, the data acquisition recording device 100 comprises at least one clamp-on current transformer 110 and a comprehensive protection device 120.
[0034] The clamp-on current transformer 110 comprises a detection site A1 for detecting the external current loop and a sampling resistor R1, and the clamp-on current transformer 110 generates a detection signal in the state that the external current loop passes through the detection site A1, and the sampling resistor R1 is configured to convert the detection signal into a voltage signal. The clamp-on current transformer 110 is electrically connected with the comprehensive protection device 120, and the comprehensive protection device 120 is configured to receive the voltage signal.
[0035] As shown in Figure 1 and Figure 2 , the existing detection device converts the detection signal into the voltage signal through the current transformer and the current transformer 200 when detecting the electrical parameter of the electrical equipment. This way needs to connect the current transformer into the loop of the electrical equipment when collecting data, which is very cumbersome to operate.
[0036] Through the data acquisition recording device 100 in the embodiment of the present application, the lead of the electrical equipment passes through the detection site A1 formed by the clamp-on current transformer 110, and the detection signal can be generated. In the embodiment, the detection signal generated by the clamp-on current transformer 110 is a current signal, and the sampling resistor R1 can convert the current signal into a voltage signal, so that the comprehensive protection device 120 can receive the current signal and the voltage signal at the same time, in order to record and display the current waveform and the voltage waveform, and realize the data acquisition of the electrical equipment. Among them, the detection site A1 of the clamp-on current transformer 110 is switchable, so as to put the lead into the detection site A1 or take the lead out of the detection site A1.
[0037] Specifically, the data acquisition and recording device 100 in the embodiment of the utility model can include multiple clamp-on current transformers 110. When electrical parameters of multiple current loops or electrical parameters of multiple electrical equipment need to be collected, the corresponding wires are passed through the corresponding clamp-on current transformers 110, so that the comprehensive protection device 120 can simultaneously collect and record the waveforms of the multiple electrical equipment.
[0038] Further, the comprehensive protection device 120 can process and record the voltage signal after receiving the voltage signal, and can also obtain the current signal of the electrical equipment according to the detection signal, and convert the voltage signal and the current signal into a waveform diagram to display to the operator, so as to facilitate the operator to obtain the electrical parameters of the electrical equipment and judge the operating condition of the electrical equipment.
[0039] The data acquisition and recording device 100 in the embodiment of the utility model detects the external current loop through the clamp-on current transformer 110 and generates a detection signal, and the sampling resistor R1 can convert the detection signal into a voltage signal. By passing the current loop of the electrical equipment through the detection site A1 formed by the clamp-on current transformer 110, the detection signal and the voltage signal of the electrical equipment can be conveniently and quickly monitored, and the comprehensive protection device 120 can obtain the detection signal and the voltage signal of multiple electrical equipment to realize simultaneous detection of multiple electrical equipment. Moreover, since the clamp-on current transformer 110 has a small size, the data acquisition and recording device 100 is convenient to carry while realizing multi-channel measurement.
[0040] In some embodiments, the comprehensive protection device 120 includes multiple acquisition ports M1, the acquisition ports M1 are electrically connected with the clamp-on current transformers 110, and the comprehensive protection device 120 is configured to receive the detection signal and the voltage signal through the acquisition ports M1 and display the detection signal and the voltage signal.
[0041] Through the data acquisition and recording device 100 in the embodiment of the utility model, the wires of the electrical equipment are passed through the detection site A1 formed by the clamp-on current transformer 110 to generate a detection signal. Each clamp-on current transformer 110 is electrically connected with a corresponding acquisition port M1, and the comprehensive protection device 120 obtains the voltage signal converted by the sampling resistor R1 of the corresponding clamp-on current transformer 110 through the acquisition port M1, and can also directly obtain the detection signal, i.e. the current signal, generated by the corresponding clamp-on current transformer 110 through the acquisition port M1, to realize data acquisition of the electrical equipment.
[0042] Further, the comprehensive protection device 120 further includes an adjuster 121, which is configured as an adjustment amplitude correction coefficient of the comprehensive protection device 120.
[0043] In the embodiment, the amplitude correction coefficient is adjusted by the adjuster 121, the error generated by the clamp-on current transformer 110 during measurement can be reduced, and the accuracy of the current signal and the voltage signal received by the comprehensive protection device 120 can be improved.
[0044] In some embodiments, the comprehensive protection device 120 further includes a monitoring terminal 122 electrically connected to a direct-current power supply terminal 123 of the comprehensive protection device 120, and the monitoring terminal 122 is arranged on the outer surface of the comprehensive protection device 120, so that an external device can detect the switching quantity of the comprehensive protection device 120 through the monitoring terminal 122.
[0045] In the embodiment, the external monitoring device can be electrically connected to the monitoring terminal 122 of the comprehensive protection device 120 to monitor the switching quantity or dry contact of the comprehensive protection device 120, thereby monitoring the operating state of the data acquisition and recording device 100, and avoiding the failure to find out the fault of the data acquisition and recording device 100 in time.
[0046] When the data acquisition and recording device 100 detects the electrical equipment, the related setting parameters are stored in the comprehensive protection device 120, so that the setting does not need to be performed again after power failure and power recovery, the repeated measurement work is avoided, and the debugging time is shortened.
[0047] As shown in FIG. 1, Figure 1 In some embodiments, the clamp-on current transformer 110 includes a clamp-on iron core 111 and an induction coil 112, a sampling resistor R1 is connected in parallel with the induction coil 112, the induction coil 112 is wound around the clamp-on iron core 111 and is electrically connected to the comprehensive protection device 120, and the clamp-on iron core 111 forms a detection position A1 in a closed state.
[0048] In the embodiment, the induction coil 112 is wound around the switchable clamp-on iron core 111, when it is necessary to detect the current loop of the electrical equipment, the clamp-on iron core 111 is opened, the wire of the electrical equipment is placed in the clamp-on iron core 111, the clamp-on iron core 111 is closed to form the detection position A1, and the current loop of the electrical equipment can be detected at this time. After the detection is completed, the clamp-on iron core 111 is opened, and the wire of the electrical equipment is taken out of the clamp-on iron core 111.
[0049] As shown in FIG. 1, Figure 3 In some embodiments, the data acquisition and recording device 100 further includes a resistance box 130 electrically connected to the comprehensive protection device 120, and the resistance box 130 is configured to adjust the resistance in the circuit connected to the comprehensive protection device 120 to improve the input voltage amplitude of the acquisition port M1.
[0050] In the embodiment, the resistance box 130 is connected in series with the comprehensive protection device 120. When it is necessary to detect the high-voltage electrical equipment, the resistance of the resistance box 130 connected in the circuit of the comprehensive protection device 120 is adjusted to increase the input voltage amplitude of the voltage input end of the data acquisition recording device 100, so as to facilitate the detection of the high-voltage electrical equipment.
[0051] As shown in Figure 3 In some embodiments, the data acquisition recording device 100 further comprises an output terminal 140, the output terminal 140 is electrically connected with the comprehensive protection device 120, and an external device can obtain the voltage signal and the current signal through the output terminal 140.
[0052] As shown in Figures 3 to 5 In the embodiment, the comprehensive protection device 120 can transmit the detection signal to the external detection device, such as an oscilloscope, a recorder, etc. through the output terminal 140, so that the external detection device can analyze, identify, record and display the detection signal and the voltage signal.
[0053] As shown in Figure 4 and Figure 5 As shown in the waveform, in the initial stage of starting, the voltage and current of the asynchronous motor of the electrical equipment gradually increase, that is, the soft start. In the shutdown process, as shown in the waveform, after the asynchronous motor of the electrical equipment is disconnected from the power supply, the motor terminal voltage does not immediately return to zero, but has a significant decay process due to the combined action of the coasting and the residual magnetism.
[0054] Through the data acquisition recording device 100 of the present application, the comprehensive protection device 120 can simultaneously display the effective value, instantaneous value, phase and other electrical parameters of the current and voltage at each time, so as to realize the acquisition and display of the current signal and the voltage signal of the electrical equipment.
[0055] As shown in Figure 1 In some embodiments, the comprehensive protection device 120 further comprises a display screen 124, the display screen 124 is arranged on the outer surface of the comprehensive protection device 120, and the display screen 124 is configured to display the voltage signal, and the display screen 124 can also display the detection signal, that is, the current signal.
[0056] In the embodiment, the comprehensive protection device 120 can control the display screen 124 to display the received voltage signal and current signal. At the same time, the related voltage signal and current signal data stored in the comprehensive protection device 120 can be exported through the output terminal 140, so that the operator can obtain the data of the detected electrical equipment in real time, and the running status of the electrical equipment can be judged in time.
[0057] In some embodiments, the integrated protection device 120 further comprises a processing circuit 126 and a plurality of control buttons 125, the control buttons 125 are arranged on the outer surface of the integrated protection device 120, the processing circuit 126 is electrically connected with the clamp-on current transformer 110 and the control buttons 125, and the control buttons 125 can adjust the parameters of the clamp-on current transformer 110 and / or the integrated protection device 120 in the triggered state.
[0058] In the embodiment, the processing circuit 126 is used for receiving and processing the detection signal and controlling the display screen 124 to display the detection signal.
[0059] The operator can trigger the corresponding control button 125, so that the integrated protection device 120 of the data acquisition and recording device 100 in the embodiment acquires the voltage signal of the corresponding clamp-on current transformer 110. The operator can also trigger the corresponding control button 125 to control the display screen 124 to display the corresponding detection signal, or control the adjuster 121 to adjust the amplitude correction coefficient of the integrated protection device 120, or control the resistance box 130 to adjust the resistance in the circuit connected to the integrated protection device 120. By unifying the control buttons 125 of each function of the data acquisition and recording device 100, the operation is facilitated.
[0060] Further, the plurality of control buttons 125 comprises a reset button, in the state that the reset button is triggered, the integrated protection device 120 can be reset to the normal operating state. After the integrated protection device 120 is triggered to protect the function and the circuit is disconnected, the integrated protection device 120 can be reset by triggering the reset button, so as to restore normal work.
[0061] In some embodiments, the data acquisition and recording device 100 of the embodiment of the utility model can be used for identification of the first breakpoint in the series control loop, for example, in the case that the 24V relay load and the relay coil direct current resistance are not greater than 1KΩ, the first breakpoint in the series control loop is detected.
[0062] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the drawings, or direct / indirect application in other related technical fields under the inventive concept of the utility model is included in the patent protection range of the utility model.
Claims
1. A data acquisition logging device, characterized in that, The data acquisition recording device comprises: at least one clamp-on current transformer, the clamp-on current transformer comprising a detection site for detecting an external current loop and a sampling resistor, the clamp-on current transformer generating a detection signal in a state where the external current loop passes through the detection site, the sampling resistor being configured to convert the detection signal into a voltage signal; a comprehensive protection device, the clamp-on current transformer being electrically connected with the comprehensive protection device, the comprehensive protection device being configured to receive the detection signal and the voltage signal.
2. The data acquisition logging device of claim 1, wherein, The comprehensive protection device comprises a plurality of acquisition ports, the acquisition ports being electrically connected with the clamp-on current transformer, the comprehensive protection device being configured to receive the detection signal and the voltage signal through the acquisition ports and display the detection signal and the voltage signal.
3. The data acquisition logging device of claim 2, wherein, The comprehensive protection device further comprises an adjuster, the adjuster being configured to adjust an amplitude correction coefficient of the comprehensive protection device.
4. The data acquisition logging device of claim 2, wherein, The comprehensive protection device further comprises a monitoring terminal, the monitoring terminal being electrically connected with a DC power supply terminal of the comprehensive protection device, the monitoring terminal being arranged on an outer surface of the comprehensive protection device, and an external device being able to detect switching quantities of the comprehensive protection device through the monitoring terminal.
5. The data acquisition logging device of claim 1, wherein, The clamp-on current transformer comprises a clamp-on iron core and an induction coil, the sampling resistor being connected in parallel with the induction coil, the induction coil being wound around the clamp-on iron core and being electrically connected with the comprehensive protection device, the clamp-on iron core forming the detection site in a closed state.
6. The data acquisition logging device of claim 2, wherein, The data acquisition recording device further comprises a resistance box, the resistance box being electrically connected with the comprehensive protection device, the resistance box being configured to adjust a resistance in a circuit connected with the comprehensive protection device, so as to increase an input voltage amplitude of the acquisition ports.
7. The data acquisition logging device of any one of claims 1 to 6, wherein, The data acquisition recording device further comprises an output terminal, the output terminal being electrically connected with the comprehensive protection device, and an external device being able to acquire the detection signal and the voltage signal through the output terminal.
8. The data acquisition logging device of any one of claims 1 to 6, wherein, The comprehensive protection device further comprises a display screen, the display screen being arranged on an outer surface of the comprehensive protection device, the display screen being configured to display the detection signal and the voltage signal.
9. The data acquisition logging device of any one of claims 1 to 6, wherein, The comprehensive protection device further comprises a processing circuit and a plurality of control buttons, the control buttons being arranged on an outer surface of the comprehensive protection device, the processing circuit being electrically connected with the clamp-on current transformer and the control buttons, the control buttons being able to adjust parameters of the clamp-on current transformer and / or the comprehensive protection device in a triggered state.
10. The data acquisition logging device of claim 9, wherein, The plurality of control buttons comprise a reset button, the comprehensive protection device being able to reset to a normal operating state in a triggered state of the reset button.