Electric ground line monitoring circuit and electric ground
By introducing a ground wire detection module and an alarm indication module into the electric ground wire monitoring circuit, the problem of timely detection and handling of electric ground wire connection issues is solved, ensuring product safety and avoiding current breakdown caused by ground wire disconnection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUXSAN TECH (KUNSHAN) CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, grounding connection problems in electric starters cannot be detected in a timely manner, leading to ESD and EOS path failures and affecting product production.
Design an electric hoist ground wire monitoring circuit, including a ground wire detection module and an alarm indication module. By detecting the ground wire status of the electric hoist and sending an alarm signal when it is disconnected, real-time monitoring and timely handling can be achieved.
It enables real-time monitoring and timely handling of electric grounding wires, avoiding current breakdown problems caused by grounding wire disconnection and ensuring product safety.
Smart Images
Figure CN224555271U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment safety, and in particular to an electric ground wire monitoring circuit and an electric starter. Background Technology
[0002] If there are connection problems with the grounding wire of an electric starter, such as a broken grounding wire or a loose connection, these problems may not be detected immediately. This can cause the ESD (Electro-Static Discharge) and EOS (Electrical Over Stress) paths of the electric starter to fail, which may cause a large current breakdown in the product when the electric starter is assembled with components. Currently, the grounding wire of the electric starter is not inspected, resulting in the discovery of grounding problems only after batch defects occur. The detection and handling of the grounding wire of the electric starter is delayed, which affects product production. Utility Model Content
[0003] This utility model proposes a ground wire monitoring circuit for an electric starter and several embodiments of the electric starter, wherein at least one embodiment can solve the technical problem of delayed detection and processing of the ground wire of the electric starter.
[0004] To achieve the above objectives, this utility model provides a ground wire monitoring circuit for an electric hoist. The electric hoist ground wire monitoring circuit is connected to the ground wire end of the electric hoist. The electric hoist ground wire monitoring circuit includes a ground wire detection module and an alarm indication module. The detection terminal of the ground wire detection module is connected to the ground wire end of the electric hoist and detects the ground wire status of the electric hoist. The output terminal of the ground wire detection module is connected to the alarm indication module and sends an alarm signal to the alarm indication module when the ground wire status is detected to be disconnected. The alarm indication module performs an alarm operation according to the alarm signal.
[0005] Optionally, the ground detection module includes a first resistor, a first capacitor, and a ground detection unit; wherein:
[0006] The first end of the first resistor is connected to the power supply end, the second end of the first resistor is connected to the detection end of the ground wire detection unit, and the second end of the first resistor is also grounded through the first capacitor; the detection end of the ground wire detection unit is connected to the ground wire end of the electric starter as the detection end of the ground wire detection module, and the output end of the ground wire detection unit is connected to the alarm indication module as the output end of the ground wire detection module.
[0007] Optionally, the ground detection unit includes a first switching transistor and a second switching transistor; wherein:
[0008] The control terminal of the first switch is connected to the grounding end of the electric starter as the detection terminal of the grounding detection unit. The output terminal of the first switch is grounded. The input terminal of the first switch is connected to the control terminal of the second switch. The input terminal of the second switch is connected to the power supply terminal. The output terminal of the second switch is connected to the alarm indication module as the output terminal of the grounding detection unit.
[0009] Optionally, the alarm indication module includes a buzzer; wherein:
[0010] The first end of the buzzer is connected to the output end of the ground detection module, and the second end of the buzzer is grounded.
[0011] Optionally, the alarm indication module includes a second resistor and a first light-emitting diode; wherein:
[0012] The positive terminal of the first light-emitting diode is connected to the output terminal of the ground detection module through the second resistor, and the negative terminal of the first light-emitting diode is grounded.
[0013] Optionally, the electric hoist ground wire monitoring circuit further includes a start-stop control module; the start-stop control module is connected to the positive power line of the electric hoist, and the control terminal of the start-stop control module is connected to the output terminal of the ground wire detection module; wherein:
[0014] When the start / stop control module receives the alarm signal, it disconnects the positive power line of the electric starter.
[0015] Optionally, the start / stop control module includes a relay; wherein:
[0016] The first end of the relay coil is connected to the output end of the ground detection module, the second end of the relay coil is grounded, and a set of normally closed switches of the relay are connected to the positive power line of the electric starter.
[0017] Optionally, the electric grounding wire monitoring circuit further includes a voltage conversion module; wherein:
[0018] The input terminal of the voltage conversion module is connected to the positive power line of the electric starter, wherein the input terminal of the voltage conversion module is closer to the power source on the positive power line of the electric starter than the start / stop control module.
[0019] The output terminal of the voltage conversion module serves as the power supply terminal.
[0020] Optionally, the electric grounding wire monitoring circuit further includes a power-on indicator module, which includes a third resistor and a second light-emitting diode; wherein:
[0021] The positive terminal of the second light-emitting diode is connected to the power supply terminal through the third resistor, and the negative terminal of the second light-emitting diode is grounded.
[0022] In addition, to achieve the above objectives, this utility model also provides an electric starter, which is provided with a ground wire interface connected to the end of the ground wire, and the electric starter is connected to the electric starter ground wire monitoring circuit as described above through the ground wire interface.
[0023] This utility model proposes a ground wire monitoring circuit and an electric hoist. The ground wire monitoring circuit is connected to the ground wire end of the electric hoist. The ground wire monitoring circuit includes a ground wire detection module and an alarm indication module. The detection terminal of the ground wire detection module is connected to the ground wire end of the electric hoist and detects the ground wire status. The output terminal of the ground wire detection module is connected to the alarm indication module and sends an alarm signal to the alarm indication module when a ground wire disconnection is detected. The alarm indication module then performs an alarm operation based on the alarm signal. By setting up a ground wire detection module to detect the ground wire end of the electric hoist, it is possible to detect whether there is a break in the overall ground wire connection of the electric hoist, thus realizing real-time monitoring of the electric hoist's ground wire. At the same time, by using the alarm indication module to perform an alarm operation when a ground wire disconnection is detected, the disconnection can be indicated in a timely manner, allowing for timely handling of the ground wire and restoration of the ground wire connection to avoid affecting the use of the electric hoist. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0025] Figure 1 This is a functional block diagram of an embodiment of the electric grounding wire monitoring circuit of this utility model;
[0026] Figure 2 The electric grounding wire monitoring circuit of this utility model is applied in... Figure 1 Circuit structure diagram in the embodiment.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.
[0028] Explanation of icon numbers:
[0029]
[0030] Detailed Implementation
[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0035] This utility model provides a ground wire monitoring circuit for electric hoists, applied in an electric hoist 300. Please refer to [link / reference needed]. Figure 1 , Figure 1 This is a functional block diagram of an embodiment of the electric hoist ground wire monitoring circuit of this utility model. In this embodiment, the electric hoist ground wire monitoring circuit is connected to the ground wire end of the electric hoist 300; the electric hoist ground wire monitoring circuit includes a ground wire detection module 100 and an alarm indication module 200; the detection terminal of the ground wire detection module 100 is connected to the ground wire end of the electric hoist 300 and detects the ground wire status of the electric hoist 300, the output terminal of the ground wire detection module 100 is connected to the alarm indication module 200, and sends an alarm signal to the alarm indication module 200 when the ground wire status is detected to be disconnected, and the alarm indication module 200 performs an alarm operation according to the alarm signal.
[0036] The electric screwdriver 300 is used to install parts during product manufacturing; it requires power to drive a motor to rotate the screwdriver. The specific structure of the electric screwdriver 300 can be set according to actual needs and is not limited here.
[0037] See Figure 1 and Figure 2 In one embodiment of this utility model, the electric starter 300 can be directly powered by DC, or it can be powered by converting AC to DC using a power adapter 330. For example, the electric starter 300 includes a three-prong power cord 340, a power adapter 330, a six-core connecting wire 320, and the electric starter body 310 connected in sequence. The three-prong power cord 340 draws AC power from the socket 400, which is then converted to DC power by the power adapter 330 and transmitted to the electric starter body 310 via the six-core connecting wire 320 to power the electric starter body 310. The ground wire... The grounding wire is laid from socket 400 through a three-prong power cord 340, power adapter 330, six-core connecting wire 320, and electric hoist body 310. The end of the ground wire on the electric hoist body 310 is the ground wire end; the end of the ground wire on the three-prong power cord 340 is the ground wire start end. It can be understood that the ground wire end, being the end furthest from socket 400, will not be grounded if there is any break in the ground wire. Only when the ground wire is completely connected will the ground wire end be grounded. Therefore, detecting the ground wire end can determine whether the ground wire is broken. Specifically, the ground wire detection module 100 can be set between the power adapter 330 and the six-core connecting wire 320.
[0038] The ground wire detection module 100 is used to detect the end of the ground wire to determine whether the ground wire is disconnected and obtain the ground wire status. The ground wire status includes ground wire disconnection and ground wire connection. When the ground wire status is ground wire disconnection, it means that there is a break in the ground wire of the electric hoist 300. Therefore, it is necessary to remind the user to deal with the ground wire disconnection as soon as possible. Therefore, the ground wire detection module 100 sends an alarm signal to the alarm indication module 200 so that the alarm indication module 200 performs an alarm operation. When the ground wire status is ground wire connection, it means that the ground wire on the electric hoist 300 is completely connected. Therefore, there is no need to perform an alarm operation.
[0039] The specific alarm operations of the alarm indication module 200 can be set according to actual needs, including but not limited to sound, light, outputting alarm signals to the host computer, etc.
[0040] This embodiment sets up a ground wire detection module 100 to detect the end of the ground wire of the electric hoist 300, thereby enabling the detection of whether the ground wire of the electric hoist 300 is disconnected. This achieves real-time monitoring of the electric hoist's ground wire. At the same time, the alarm indication module 200 performs an alarm operation when the ground wire is disconnected, which can promptly indicate the disconnection of the ground wire, so that the ground wire can be dealt with in a timely manner and the ground wire connection can be restored to avoid affecting the use of the electric hoist 300.
[0041] Furthermore, in one embodiment of this utility model, the ground detection module 100 includes a first resistor R1, a first capacitor C1, and a ground detection unit; wherein:
[0042] The first end of the first resistor R1 is connected to the power supply end, and the second end of the first resistor R1 is connected to the detection end of the ground wire detection unit. The second end of the first resistor R1 is also grounded through the first capacitor C1. The detection end of the ground wire detection unit is connected to the ground wire end of the electric starter 300 as the detection end of the ground wire detection module 100, and the output end of the ground wire detection unit is connected to the alarm indication module 200 as the output end of the ground wire detection module 100.
[0043] When the ground wire is connected, the voltage at the power supply end reaches the detection end of the ground wire detection unit through the first resistor R1. Since the ground wire is connected, the end of the ground wire is grounded, and the ground wire detection unit is grounded through the end of the ground wire. The detection end of the ground wire detection unit is at a low level.
[0044] When the ground wire is disconnected, the voltage at the power supply end reaches the detection end of the ground wire detection unit through the first resistor R1. Since the ground wire is disconnected, the end of the ground wire is not grounded, and the detection end of the ground wire detection unit is at a high level.
[0045] The first capacitor, C1, is a filter capacitor used for filtering and anti-interference.
[0046] The detection terminal of the ground wire detection unit will detect different level signals depending on whether the ground wire is connected or disconnected, thus enabling the detection of the ground wire status.
[0047] Furthermore, in one embodiment of this utility model, the ground wire detection unit includes a first switch Q1 and a second switch Q2; wherein:
[0048] The control terminal of the first switch Q1 is connected to the grounding end of the electric starter 300 as the detection terminal of the grounding detection unit. The output terminal of the first switch Q1 is grounded. The input terminal of the first switch Q1 is connected to the control terminal of the second switch Q2. The input terminal of the second switch Q2 is connected to the power supply terminal. The output terminal of the second switch Q2 is connected to the alarm indicator module 200 as the output terminal of the grounding detection unit.
[0049] The specific types of the first switch Q1 and the second switch Q2 can be set according to actual needs. In this embodiment, the first switch Q1 is an NPN transistor and the second switch Q2 is a PNP transistor as an example. The control terminal of the first switch Q1 is the base of the NPN transistor, the input terminal of the first switch Q1 is the collector of the NPN transistor, and the output terminal of the first switch Q1 is the emitter of the NPN transistor. The control terminal of the second switch Q2 is the base of the PNP transistor, the input terminal of the second switch Q2 is the emitter of the PNP transistor, and the output terminal of the second switch Q2 is the collector of the PNP transistor.
[0050] When the ground wire is connected, the detection terminal of the ground wire detection unit is at a low level, the base of the first switch Q1 is at a low level, the first switch Q1 is turned off, the base of the second switch Q2 is at a high level, the second switch Q2 is turned off, and the collector of the second switch Q2 does not output voltage to the alarm indicator module 200.
[0051] When the ground wire is disconnected, the detection terminal of the ground wire detection unit is at a high level, the base of the first switch Q1 is at a high level, the first switch Q1 is turned on, the base of the second switch Q2 is grounded through the first switch Q1, the base of the second switch Q2 is at a low level, the second switch Q2 is turned on, and the voltage of the power supply terminal is output to the alarm indication module 200 through the collector of the second switch Q2.
[0052] The ground wire detection unit can output different level signals to the alarm indication module 200 under different ground wire states, such as ground wire connection or ground wire disconnection, thus enabling control of the alarm indication module 200 based on different ground wire states.
[0053] Furthermore, in one embodiment of this utility model, a fourth resistor R4 and a second capacitor C2 can be provided in the ground detection unit; the first end of the second capacitor C2 is connected to the control terminal of the first switching transistor Q1, and the second end of the second capacitor C2 is connected to the output terminal of the second switching transistor Q2 through the associated fourth resistor R4.
[0054] The fourth resistor R4 and the second capacitor C2 form a feedback branch to improve the stability of the circuit.
[0055] To improve circuit stability, a fifth capacitor C5 can be placed at the output terminal of the second switch Q2, and the output terminal of the second switch Q2 is grounded through the fifth capacitor C5; the fifth capacitor C5 is used to filter the signal output by the second switch Q2.
[0056] Furthermore, in one embodiment of this utility model, the alarm indication module 200 includes a buzzer BL; wherein:
[0057] The first terminal of the buzzer BL is connected to the output terminal of the ground detection module 100, and the second terminal of the buzzer BL is grounded.
[0058] When the ground wire is in the ground connection state, the output terminal of the ground detection module 100 does not output voltage. Therefore, no current flows through the buzzer BL, and the buzzer BL does not work.
[0059] When the ground wire is disconnected, the output terminal of the ground wire detection module 100 outputs voltage, so current flows through the buzzer BL and it sounds an alarm.
[0060] The buzzer BL can be controlled to operate in different states depending on whether the ground wire is connected or disconnected. Specifically, when the ground wire is disconnected, the buzzer BL will sound an alarm to remind the user that the ground wire is disconnected.
[0061] Furthermore, in one embodiment of this utility model, the alarm indication module 200 includes a second resistor R2 and a first light-emitting diode D1; wherein:
[0062] The positive terminal of the first light-emitting diode D1 is connected to the output terminal of the ground detection module 100 through the second resistor R2, and the negative terminal of the first light-emitting diode D1 is grounded.
[0063] When the ground wire is in the ground connection state, the output terminal of the ground detection module 100 does not output voltage, therefore, the first light-emitting diode D1 does not light up;
[0064] When the ground wire is disconnected, the output terminal of the ground wire detection module 100 outputs a voltage to the positive terminal of the first light-emitting diode D1 through the second resistor R2, so the first light-emitting diode D1 conducts and emits light.
[0065] The first LED D1 can be controlled to operate in different states depending on whether the ground wire is connected or disconnected. Specifically, when the ground wire is disconnected, the first LED D1 will emit light to remind the user that the ground wire is disconnected.
[0066] The specific color of the first light-emitting diode D1 can be set according to actual needs, such as setting it to red.
[0067] Furthermore, in one embodiment of this utility model, the electric hoist ground wire monitoring circuit further includes a start-stop control module; the start-stop control module is connected to the positive power line of the electric hoist 300, and the control terminal of the start-stop control module is connected to the output terminal of the ground wire detection module 100; wherein:
[0068] When the start / stop control module receives an alarm signal, it disconnects the positive power line of the electric starter 300.
[0069] When the ground wire detection module 100 detects that the ground wire is disconnected, it sends an alarm signal to the start / stop control module.
[0070] It is understandable that when the ground wire is disconnected, there is a risk of high current breakdown in the product. Therefore, to ensure product safety, this embodiment includes a start-stop control module. When the ground wire is disconnected, the start-stop control module disconnects the positive power line of the electric starter 300, thereby stopping the electric starter 300 from working and preventing high current breakdown in the product.
[0071] Furthermore, in one embodiment of this utility model, the start / stop control module includes a relay K1; wherein:
[0072] The first end of the coil of relay K1 is connected to the output end of the ground detection module 100, the second end of the coil of relay K1 is grounded, and a set of normally closed switches of relay K1 is connected to the positive power line of electric starter 300.
[0073] When the ground wire is in the ground connection state, the output terminal of the ground detection module 100 does not output voltage. Therefore, the coil of relay K1 is not energized, the normally closed switch of relay K1 is closed, the positive power line of the position electric starter 300 is connected, and the electric starter 300 works.
[0074] When the ground wire is disconnected, the output terminal of the ground wire detection module 100 outputs voltage. Therefore, the coil of relay K1 is energized, the normally closed switch of relay K1 is opened, the positive power line of the position electric starter 300 is disconnected, and the electric starter 300 stops working.
[0075] By setting relay K1, the positive power line of the electric starter 300 can be disconnected when the ground wire is disconnected; in other embodiments, other methods can be used to control the on / off state of the positive power line, such as an electronic switch.
[0076] Furthermore, in one embodiment of this utility model, the electric grounding wire monitoring circuit further includes a voltage conversion module U1; wherein:
[0077] The input terminal of the voltage conversion module U1 is connected to the positive power line of the electric starter 300. The input terminal of the voltage conversion module U1 is closer to the power source on the positive power line of the electric starter 300 than the start / stop control module.
[0078] The output terminal of voltage conversion module U1 serves as the power supply terminal.
[0079] It is understandable that the operating voltage of the components in the electric ground wire detection circuit is relatively low, such as transistors, LEDs, and buzzers BL, which generally operate at 5V. However, the operating voltage of the electric ground wire 300 is relatively high, such as 9-19V. Therefore, in order to enable direct power supply through the positive power line of the electric ground wire 300, this embodiment sets up a voltage conversion module U1, which can convert the voltage output from the positive power line into the voltage required by the components of the electric ground wire detection circuit, thereby providing power to the electric ground wire detection circuit.
[0080] The specific type of voltage conversion module U1 can be set according to actual needs, such as LDO (Low Dropout Regulator).
[0081] Furthermore, in one embodiment of this utility model, a third capacitor C3 and a fourth capacitor C4 can be provided in the electric grounding wire monitoring circuit; the input terminal of the voltage conversion module U1 is grounded through the third capacitor C3, and the output terminal of the voltage conversion module U1 is grounded through the fourth capacitor C4.
[0082] The third capacitor C3 is used to filter the voltage of the input voltage conversion module U1, and the fourth capacitor C4 is used to filter the voltage output of the voltage conversion module U1.
[0083] Furthermore, in one embodiment of this utility model, the electric grounding wire monitoring circuit further includes a power-on indicator module, which includes a third resistor R3 and a second light-emitting diode D2; wherein:
[0084] The positive terminal of the second LED D2 is connected to the power supply terminal through the third resistor R3, and the negative terminal of the second LED D2 is grounded.
[0085] Since the alarm indicator module 200 performs an alarm operation when the ground wire is disconnected, it cannot distinguish whether the power supply is not working or the ground wire is disconnected when the ground wire is connected; therefore, in this embodiment, a power-on indicator module is set to indicate the power supply status.
[0086] When the power supply is on, such as when socket 400 is powered on, the voltage reaches the positive terminal of the second LED D2 through the third resistor R3, and the second LED D2 conducts and emits light; when the power supply is not on, there is no voltage at the positive terminal of the second LED D2, and the second LED D2 is off.
[0087] The specific color of the second LED D2 can be set according to actual needs, such as setting it to green; generally, the colors of the first LED D1 and the second LED D2 are set differently.
[0088] The overall principle of the electric grounding wire detection circuit of this application is explained below:
[0089] When the ground wire is connected, the voltage at the power supply end reaches the detection end of the ground wire detection unit through the first resistor R1. Because the ground wire is connected, the end of the ground wire is grounded, and the ground wire detection unit is grounded through the end of the ground wire. The base of the first switch Q1 is at a low level, so the first switch Q1 is turned off. The base of the second switch Q2 is at a high level, so the second switch Q2 is turned off, and the collector of the second switch Q2 does not output voltage. No current flows through the buzzer BL, so the buzzer BL does not work. The first light-emitting diode D1 does not light up. The coil of the relay K1 is not energized, the normally closed switch of the relay K1 is closed, the positive power line of the position motor 300 is connected, and the motor 300 works.
[0090] When the ground wire is disconnected, the voltage at the power supply end reaches the detection end of the ground wire detection unit through the first resistor R1. Since the ground wire is disconnected, the end of the ground wire is not grounded, the base of the first switch Q1 is at a high level, and the first switch Q1 is turned on. The base of the second switch Q2 is grounded through the first switch Q1, the base of the second switch Q2 is at a low level, and the second switch Q2 is turned on. The voltage at the power supply end is output through the collector of the second switch Q2. Current flows through the buzzer BL, and an alarm buzzer sounds. The first light-emitting diode D1 is turned on and illuminates. The coil of the relay K1 is energized, the normally closed switch of the relay K1 is opened, the positive power line of the position electric starter 300 is disconnected, and the electric starter 300 stops working.
[0091] This utility model also protects an electric hoist 300, which is provided with a ground wire interface connected to the end of a ground wire. The electric hoist 300 is connected to the electric hoist ground wire monitoring circuit described above through the ground wire interface. The structure of the electric hoist ground wire monitoring circuit can be referred to the above embodiment, and will not be repeated here. Therefore, since the electric hoist 300 of this embodiment adopts the technical solution of the above-described electric hoist ground wire monitoring circuit, the electric hoist 300 has all the beneficial effects of the above-described electric hoist ground wire monitoring circuit.
[0092] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element. The sequence numbers of the above-described embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0093] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A motorized grounding wire monitoring circuit, characterized in that, The electric starter ground wire monitoring circuit is connected to the end of the electric starter's ground wire; The electric hoist ground wire monitoring circuit includes a ground wire detection module and an alarm indication module. The detection end of the ground wire detection module is connected to the ground wire end of the electric hoist and detects the ground wire status of the electric hoist. The output end of the ground wire detection module is connected to the alarm indication module and sends an alarm signal to the alarm indication module when the ground wire status is detected to be disconnected. The alarm indication module performs an alarm operation according to the alarm signal.
2. The electrically powered grounding wire monitoring circuit as described in claim 1, characterized in that, The ground wire detection module includes a first resistor, a first capacitor, and a ground wire detection unit; wherein: The first end of the first resistor is connected to the power supply end, the second end of the first resistor is connected to the detection end of the ground wire detection unit, and the second end of the first resistor is also grounded through the first capacitor; the detection end of the ground wire detection unit is connected to the ground wire end of the electric starter as the detection end of the ground wire detection module, and the output end of the ground wire detection unit is connected to the alarm indication module as the output end of the ground wire detection module.
3. The electrically powered grounding wire monitoring circuit as described in claim 2, characterized in that, The ground wire detection unit includes a first switching transistor and a second switching transistor; wherein: The control terminal of the first switch is connected to the grounding end of the electric starter as the detection terminal of the grounding detection unit. The output terminal of the first switch is grounded. The input terminal of the first switch is connected to the control terminal of the second switch. The input terminal of the second switch is connected to the power supply terminal. The output terminal of the second switch is connected to the alarm indication module as the output terminal of the grounding detection unit.
4. The electric grounding wire monitoring circuit as described in claim 1, characterized in that, The alarm indication module includes a buzzer; wherein: The first end of the buzzer is connected to the output end of the ground detection module, and the second end of the buzzer is grounded.
5. The electrically powered grounding wire monitoring circuit as described in claim 1, characterized in that, The alarm indication module includes a second resistor and a first light-emitting diode; wherein: The positive terminal of the first light-emitting diode is connected to the output terminal of the ground detection module through the second resistor, and the negative terminal of the first light-emitting diode is grounded.
6. The electric grounding wire monitoring circuit as described in claim 1, characterized in that, The electric hoist ground wire monitoring circuit also includes a start / stop control module; the start / stop control module is connected to the positive power line of the electric hoist, and the control terminal of the start / stop control module is connected to the output terminal of the ground wire detection module; wherein: When the start / stop control module receives the alarm signal, it disconnects the positive power line of the electric starter.
7. The electric grounding wire monitoring circuit as described in claim 6, characterized in that, The start / stop control module includes a relay; wherein: The first end of the relay coil is connected to the output end of the ground detection module, the second end of the relay coil is grounded, and a set of normally closed switches of the relay are connected to the positive power line of the electric starter.
8. The electric grounding wire monitoring circuit as described in claim 6, characterized in that, The electric grounding wire monitoring circuit also includes a voltage conversion module; wherein: The input terminal of the voltage conversion module is connected to the positive power line of the electric starter, wherein the input terminal of the voltage conversion module is closer to the power source on the positive power line of the electric starter than the start / stop control module. The output terminal of the voltage conversion module serves as the power supply terminal.
9. The electric grounding wire monitoring circuit as described in claim 8, characterized in that, The electric grounding wire monitoring circuit further includes a power-on indicator module, which comprises a third resistor and a second light-emitting diode; wherein: The positive terminal of the second light-emitting diode is connected to the power supply terminal through the third resistor, and the negative terminal of the second light-emitting diode is grounded.
10. An electric starter, characterized in that, The electric starter is provided with a ground wire interface that is connected to the end of the ground wire, and the electric starter is connected to the electric starter ground wire monitoring circuit as described in any one of claims 1 to 9 through the ground wire interface.