Metal buckle detection alarm prompt circuit and system

Abstract

The utility model discloses a metal buckle detection alarm prompt circuit and system. The circuit comprises a metal inductive sensor, a positive electrode power supply circuit, a negative electrode power supply circuit, and a first prompting lamp branch circuit, a second prompting lamp branch circuit and a buzzer prompting branch circuit which are connected between the positive electrode power supply circuit and the negative electrode power supply circuit, the first prompting lamp branch comprises a detection switch and a coil of a first intermediate relay which are connected in series; the first prompting lamp branch also comprises a first color prompting lamp; the second prompting lamp branch comprises a first contact of the first intermediate relay and a second color prompting lamp; the buzzer prompt branch comprises a starting and self-locking module, a reset module, a control module and a buzzer. According to the technical scheme, whether the metal buckle is installed in place or not can be detected, a prompt signal is sent out, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal detection, in particular to a metal buckle detection alarm prompt circuit and system. Background Art

[0002] The car speaker cover is fixed to the rear bulkhead with metal clips. After the speaker cover is installed, it is necessary to check whether the metal clips are installed in place to ensure the safety and stability of the speaker cover.

[0003] The existing technology uses manual marking inspection to perform inspection, that is, after installation is completed, workers have to check each buckle one by one. However, this inspection method has the disadvantages of high labor intensity and low efficiency. Utility Model Content

[0004] The utility model provides a metal buckle detection alarm prompt circuit and system to solve the problems of high labor intensity and low efficiency when using a manual marking inspection method to detect whether the metal buckle is firmly installed.

[0005] According to one aspect of the present invention, a metal buckle detection alarm prompt circuit is provided, comprising: a metal induction sensor, a positive power supply circuit, a negative power supply circuit, and a first warning light branch, a second warning light branch, and a buzzer prompt branch connected between the positive power supply circuit and the negative power supply circuit;

[0006] The metal sensing sensor is used to generate a switch closing signal after sensing a metal buckle;

[0007] The first warning light branch includes a detection switch and a coil of a first intermediate relay connected in series; a control end of the detection switch is electrically connected to the metal induction sensor, and the detection switch is configured to close upon receiving the switch closing signal; the first warning light branch also includes a first color warning light, which is connected in parallel with the coil of the first intermediate relay;

[0008] The second warning light branch includes a first contact of the first intermediate relay and a second color warning light, and the first contact of the first intermediate relay controls the second color warning light and the first color warning light to light up alternately under the control of the coil of the first intermediate relay;

[0009] The buzzer prompt branch includes a starting and self-locking module, a reset module, a control module and a buzzer. The starting and self-locking module, the reset module and the control module are connected in series, and the buzzer is connected in parallel with the control module. The second contact of the first intermediate relay is provided in the reset module. After the reset module is started, the prompt duration of the buzzer is controlled by the reset module and the control module.

[0010] According to another aspect of the present invention, a metal buckle detection alarm prompt system is provided, comprising: a power supply and a metal buckle detection alarm prompt circuit as described in any embodiment of the present invention; wherein the power supply supplies power to the positive power supply circuit and the negative power supply circuit.

[0011] The technical solution of the embodiment of the utility model can detect whether the metal clip is properly installed and issue a warning signal through the mutual cooperation of the first warning light branch, the second warning light branch, and the buzzer warning branch. Specifically, the first warning light branch and the second warning light branch light up alternately, allowing workers to determine the installation position of the metal clip by the light. The buzzer warning branch provides sound feedback, ensuring that workers can quickly receive warning information in a busy operating environment. This multiple warning mechanism not only improves work efficiency, but also reduces the risk of errors caused by distracted workers.

[0012] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of a metal buckle detection alarm prompt circuit provided by an embodiment of the present utility model;

[0015] Figure 2 A schematic diagram of a control module provided in an embodiment of the present utility model;

[0016] Figure 3 A schematic diagram of a starting and self-locking module provided in an embodiment of the present utility model;

[0017] Figure 4 A schematic diagram of a reset module provided in an embodiment of the present utility model;

[0018] Figure 5 A schematic diagram of another metal buckle detection alarm prompt circuit provided by an embodiment of the present utility model;

[0019] Figure 6A schematic diagram of a button box for a metal buckle detection alarm prompt system provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Figure 1 This is a schematic diagram of a metal buckle detection alarm prompt circuit provided by an embodiment of the present utility model. This embodiment can be used to detect whether the metal buckle fixing the speaker cover is firmly installed. Figure 1 As shown, the circuit includes:

[0023] A metal sensing sensor 110, a positive power supply circuit 120, a negative power supply circuit 130, and a first warning light branch 140, a second warning light branch 150, and a buzzer warning branch 160 connected between the positive power supply circuit 120 and the negative power supply circuit 130;

[0024] The metal sensing sensor 110 is used to generate a switch closing signal after sensing a metal buckle;

[0025] The first indicator light branch 140 includes a detection switch 1401 and a coil 170 of a first intermediate relay connected in series. The control end of the detection switch 1401 is electrically connected to the metal induction sensor 110. The detection switch 1401 is configured to close upon receiving a switch closing signal. The first indicator light branch 140 also includes a first color indicator light 1402, which is connected in parallel with the coil 170 of the first intermediate relay.

[0026] The second warning light branch 150 includes a first contact 171 of a first intermediate relay and a second color warning light 1501. The first contact 171 of the first intermediate relay, under the control of the coil 170 of the first intermediate relay, controls the second color warning light 1501 and the first color warning light 1402 to light up alternately.

[0027] The buzzer prompt branch 160 includes a starting and self-locking module 161, a reset module 162, a control module 163 and a buzzer 164. The starting and self-locking module 161, the reset module 162 and the control module 163 are connected in series, and the buzzer 164 is connected in parallel with the control module 163; a second contact of a first intermediate relay is provided in the reset module 162. After the reset module 162 is started, the prompt duration of the buzzer 164 is controlled by the reset module 162 and the control module 163.

[0028] Among them, the metal sensing sensor 110 refers to a sensor for detecting metal objects, which can sense whether the metal buckle is installed in place. The positive power supply circuit 120 refers to a circuit that provides a positive voltage in the circuit, which is usually used to power electrical equipment. Exemplarily, the voltage of the positive power supply circuit 120 can be 6V, 12V, 24V or 48V, etc. The negative power supply circuit 130 refers to a circuit that provides a negative voltage or grounding in the circuit, and together with the positive power supply circuit 120, it constitutes a closed loop of the circuit. Exemplarily, the voltage of the negative power supply circuit 130 can be 0V, -6V, -12V, -24V or -48V, etc.

[0029] When the metal sensing sensor 110 detects the metal buckle, it sends a switch closing signal to trigger subsequent actions of the circuit.

[0030] Among them, the first prompt light branch 140 refers to the circuit part used to indicate the system status. The detection switch 1401 refers to an electrical switch that is closed or turned off according to the signal transmitted by the metal induction sensor 110. The coil 170 of the first intermediate relay refers to the electromagnetic coil part of the first intermediate relay, which is used to control the switching state of its corresponding contact. The coil 170 of the first intermediate relay generates electromagnetic force by the flow of current through the coil, driving the corresponding contact to operate. The first color prompt light 1402 refers to an indicator light for displaying the system status or warning status. Exemplarily, the first color prompt light 1402 can be an LED indicator light, a halogen lamp, a fluorescent lamp or a neon lamp.

[0031] When the metal sensor 110 detects the metal buckle and generates a switch closure signal, the first warning light branch 140 is turned on through the detection switch 1401, thereby activating the coil 170 of the first intermediate relay. Subsequently, the first color warning light 1402 lights up, indicating to the user that the metal buckle is installed correctly.

[0032] The second indicator light branch 150 refers to another circuit portion used to indicate the system status. The first contact 171 of the first intermediate relay refers to a switch contact in the first intermediate relay. The first contact 171 of the first intermediate relay is driven to close or open by the electromagnetic force of the coil, thereby controlling the circuit status. The second color indicator light 1501 refers to an indicator light of another color used to display the system status or warning status. Exemplarily, the second color indicator light 1501 can be an LED indicator light, a halogen lamp, a fluorescent lamp, or a neon lamp.

[0033] When the coil 170 of the first intermediate relay is activated, the first contact 171 of the first intermediate relay is disconnected, thereby preventing the second color warning light 1501 from emitting light. This process enables the user to intuitively understand the status of the device through the warning lights of different colors.

[0034] Among them, the buzzer prompt branch 160 refers to a circuit for issuing sound prompts, which can provide users with audio feedback to help users understand the device status or warning information. The startup and self-locking module 161 refers to a module used to start through external factors and self-lock to maintain its state after startup. The reset module 162 refers to a module used to reset through external factors to restore the system to its initial state. Exemplarily, the reset module 162 is started by pressing the reset button or receiving a reset signal. . The buzzer 164 refers to a device that emits sound prompts for warnings or status indications. The buzzer 164 can provide audio feedback to help users understand the installation status of the metal buckle.

[0035] The second contact of the first intermediate relay refers to another switch contact in the first intermediate relay. The second contact of the first intermediate relay is driven to close or open by the electromagnetic force of the coil, thereby controlling the circuit state.

[0036] The buzzer prompt branch 160 forms an efficient audio prompt mechanism through the series connection of the starting and self-locking module 161, the reset module 162 and the control module 163, and the parallel configuration with the buzzer 164, which helps users monitor the device status in real time and improve the safety and reliability of operation.

[0037] For example, the working principle of the metal buckle detection alarm prompt circuit is that when the metal induction sensor 110 senses the metal buckle, it indicates that the metal buckle is installed correctly and a switch closing signal is generated; the detection switch 1401 in the first warning light branch 140 is closed after receiving the switch closing signal, the first color warning light 1402 is energized and lights up, and the coil 170 of the first intermediate relay is energized; the first contact 171 of the first intermediate relay in the second warning light branch 150 is energized due to the coil 170 of the first intermediate relay. The power is supplied and disconnected, so that the second color indicator light 1501 is powered off and extinguished. Therefore, the first color indicator light 1402 and the second color indicator light 1501 are in a state of alternating lighting; the starting and self-locking module 161 in the buzzer prompt branch 160 is turned on under the action of external factors (for example, pressing the start switch), so that the reset module 162 and the control module 163 are powered and the buzzer 164 sounds. The control module 163 can control the reset module 162 to disconnect after a set time to control the buzzer 164 to stop sounding.

[0038] When the metal sensing sensor 110 does not sense the metal buckle, it indicates that the metal buckle is installed incorrectly and no switch closing signal is generated; the detection switch 1401 in the first warning light branch 140 does not receive the switch closing signal and remains in an open state, the first color warning light 1402 cannot be powered and cannot be lit, and the coil 170 of the first intermediate relay cannot be powered; the first contact 171 of the first intermediate relay in the second warning light branch 150 remains closed because the coil 170 of the first intermediate relay cannot be powered, so that the second color warning light 1501 is lit, so The first color indicator light 1402 and the second color warning light 1501 are alternately illuminated. The start and self-locking module 161 in the buzzer prompt branch 160 is activated by an external factor (e.g., pressing the start switch), energizing the reset module 162 and the control module 163, and sounding the buzzer 164. The control module 163 can control the reset module 162 to remain activated, causing the buzzer 164 to continue sounding until the reset module 162 is disconnected by an external factor (e.g., pressing the reset switch), de-energizing the buzzer 164 and stopping sounding. In actual use, workers can determine whether the metal buckle is properly installed by the lights of the first and second warning light branches 140 and 150, or by the duration of the buzzer 164. However, since determining the status of the lights is complex and requires constant attention, it consumes considerable energy. Especially during prolonged operation, constantly focusing on the lighting status can lead to distraction and misjudgment. Therefore, during actual operation, workers tend to rely more on audio prompts. The sound emitted by the buzzer 164 can quickly attract the attention of the staff, thereby reducing their workload.

[0039] The technical solution of this embodiment of the utility model can detect whether the metal buckle is properly installed and issue a warning signal through the interaction of the first warning light branch 140, the second warning light branch 150, and the buzzer warning branch 160. Specifically, the first warning light branch 140 and the second warning light branch 150 indicate whether the metal buckle is properly installed by lighting up alternately. The buzzer warning branch 160 provides audio feedback, ensuring that personnel can quickly receive warning information in a busy operating environment.

[0040] On the basis of the above embodiments, the control module 163 can be set in different forms as needed, which are described in detail below, but are not intended to limit the present invention.

[0041] Figure 2 This is a schematic diagram of a control module provided by an embodiment of the present utility model. Figure 2 As shown, based on the above embodiment, optionally, the control module 163 includes: a coil 180 of a second intermediate relay and a coil 190 of a time relay; the coil 180 of the second intermediate relay and the coil 190 of the time relay are connected in parallel.

[0042] Among them, coil 180 of the second intermediate relay refers to the electromagnetic coil portion of the second intermediate relay, which is used to control the on / off state of its corresponding contact. The current flowing through coil 180 of the second intermediate relay generates electromagnetic force, driving the corresponding contact to operate. Coil 190 of the time relay refers to the coil portion of the time relay, which is used to control the on / off state of its corresponding contact. After receiving a signal, coil 190 of the time relay controls its corresponding contact according to a set time delay, thereby realizing functions such as timed start and delayed stop. For example, the set time can be 1s, 2s, 3s, 4s, or 5s.

[0043] In an embodiment of the present invention, when the start and self-locking module 161 and the reset module 162 are connected, the coil 180 of the second intermediate relay can be immediately activated, causing its corresponding contact to respond and the buzzer to start sounding. The coil 190 of the time relay can be set to a delay after receiving a signal, allowing its corresponding contact to operate after a set time. Through the mutual cooperation of the coil 180 of the second intermediate relay and the coil 190 of the time relay, the control module 163 can control the conduction and disconnection of the reset module 162, and thus control the time when the buzzer 164 sounds.

[0044] The technical solution of the embodiment of the present utility model controls whether the coil 180 of the second intermediate relay and the coil 190 of the time relay can be energized, and then controls the buzzer 164, so that the detection alarm prompt circuit can provide different prompts to the staff according to whether the metal clip is firmly installed, thereby improving the flexibility, safety and user experience of the system.

[0045] On the basis of the above embodiments, the starting and self-locking module 161 can be provided in different forms as required, which are described in detail below but are not intended to limit the present invention.

[0046] Figure 3 This is a schematic diagram of a startup and self-locking module provided by an embodiment of the present utility model. Figure 2-3 As shown, based on the above embodiment, optionally, the starting and self-locking module 161 includes: a starting switch 1611 and a first contact 181 of a second intermediate relay; the first contact 181 of the second intermediate relay and the starting switch 1611 are connected in parallel; the first contact 181 of the second intermediate relay is used to self-lock the starting and self-locking module 161.

[0047] The first contact 181 of the second intermediate relay refers to a switch contact in the second intermediate relay. The first contact 181 of the second intermediate relay is driven to close or open by the electromagnetic force of the coil, thereby controlling the circuit state. Exemplarily, the first contact 181 of the second intermediate relay is a normally open contact. When the coil 180 of the second intermediate relay is not energized, the first contact remains open. When the coil 180 of the second intermediate relay is energized, the first contact closes. The start switch 1611 refers to an electrical component used to control the opening and closing of the start and self-locking module 161. The start switch 1611 connects or disconnects the circuit through physical actions (such as pressing a button, pulling a lever, or turning a knob), thereby controlling the flow of current. Exemplarily, the start switch 1611 can be a push button switch, a toggle switch, a rotary switch, or a pull-cord switch. Exemplarily, the start switch 1611 is a normally open momentary switch. A normally open momentary switch refers to an electrical switch that remains open when not pressed. When the switch is pressed, the circuit is closed and current can flow; once the switch is released, the circuit is opened and current stops flowing.

[0048] Exemplarily, the first contact 181 of the second intermediate relay is a normally open contact. A normally open contact refers to an electrical component that remains open when unpowered. When the start switch 1611 is closed, the reset module 162 is turned on, the coil 180 of the second intermediate relay is energized, and the first contact 181 of the second intermediate relay is closed, causing the start and self-locking module 161 to enter a self-locking state. At this point, even if the start switch 1611 is disconnected, the start and self-locking module 1611 remains activated, allowing current to continue to flow through the reset module 162.

[0049] Illustratively, start switch 1611 is a normally open inching switch. A normally open inching switch is an electrical switch whose contacts remain open when not pressed. They close only when the switch is pressed, allowing current to flow. A normally open inching switch eliminates the need for continuous pressing. When start switch 1611 is released, coil 180 of the second intermediate relay loses power, and the first contact 181 of the second intermediate relay opens, releasing the self-locking state of start and self-locking module 161.

[0050] In an embodiment of the present utility model, the switching state of the first contact 181 of the second intermediate relay is controlled according to whether the coil 180 of the second intermediate relay is energized, and the on and off of the reset module 162 is controlled in combination with the switching state of the start switch 1611, thereby starting the buzzer prompt branch 160; the self-locking of the first contact 181 of the second intermediate relay enables the reset module 162 to be continuously turned on, ensuring that the buzzer 164 can be energized even when the start switch 1611 is disconnected.

[0051] The technical solution of the embodiment of the present utility model quickly responds to external instructions through the starting and self-locking module 161, and promptly starts the buzzer prompt branch 160, thereby improving the reaction speed of the circuit; at the same time, through an effective self-locking mechanism, it is ensured that the buzzer 164 can continue to be powered and issue an alarm.

[0052] On the basis of the above embodiments, the reset module 162 can be configured in different forms as needed, which are described in detail below but are not intended to limit the present invention.

[0053] Figure 4 This is a schematic diagram of a reset module provided by an embodiment of the present utility model. Figure 2-4 As shown in the above embodiment, optionally, the reset module 162 includes: a reset switch 1621, a second contact 172 of the first intermediate relay, a third contact 173 of the first intermediate relay, and a first contact 191 of the time relay.

[0054] The reset switch 1621 and the second contact 172 of the first intermediate relay are connected in series to form a first sub-branch.

[0055] The first contact 191 of the time relay and the third contact 173 of the first intermediate relay are connected in series to form a second sub-branch.

[0056] The first sub-branch and the second sub-branch are connected in parallel.

[0057] Reset switch 1621 refers to an electrical switch used to restore the state of a device or system to its initial or default state. It is typically used to reset a circuit to clear a fault or restart the circuit. For example, reset switch 1621 can be a push-button reset switch, a toggle reset switch, a rotary reset switch, a remote reset switch, a self-reset switch, or a reset switch with an indicator light.

[0058] The third contact 173 of the first intermediate relay refers to another switch contact in the first intermediate relay. The third contact 173 of the first intermediate relay is driven to close or open by the electromagnetic force of the coil, thereby controlling the circuit state.

[0059] The first contact 191 of the time relay refers to the switch contact corresponding to the coil 190 of the time relay, which is responsible for connecting or disconnecting the circuit. The first contact 191 of the time relay is driven to close or open by the electromagnetic force of the coil, thereby controlling the circuit state.

[0060] The first sub-branch is the circuit branch formed in series by reset switch 1621 and the second contact 172 of the first intermediate relay. When reset switch 1621 is closed by an external action (such as pressing a reset button), and if the second contact 172 of the first intermediate relay is closed, the circuit is closed, and current flows through the second contact 172 of the first intermediate relay.

[0061] The second sub-branch is a circuit branch formed by the first contact 191 of the time relay and the third contact 173 of the first intermediate relay in series. If the first contact 191 of the time relay and the third contact 173 of the first intermediate relay are closed simultaneously, current flows through the second sub-branch.

[0062] The first sub-branch is connected in parallel with the second sub-branch, so that the reset module 162 can simultaneously support two different operation modes, namely reset and delayed start, without complicated switching between different operation modes.

[0063] Optionally, the reset switch 1621 is a normally closed switch;

[0064] The second contact 172 of the first intermediate relay is a normally closed contact, and the third contact 173 of the first intermediate relay is a normally open contact;

[0065] The first contact 191 of the time relay is a normally closed contact.

[0066] A normally closed switch is an electrical switch that defaults to a closed state when no signal is applied. When a specific signal or voltage is applied, the contacts of the normally closed switch open, cutting off the current. Normally closed contacts are electrical components that remain closed when not powered. They activate when a control signal is received and are commonly used in scenarios such as equipment startup, alarm systems, and automated control.

[0067] Reset switch 1621 is a normally closed switch. That is, in the absence of external factors (such as pressing a button), reset switch 1621 is always closed, and current can flow through reset switch 1621. Only when reset switch 1621 receives an external signal (such as pressing a button) will reset switch 1621 open, cutting off the current flowing in the circuit.

[0068] The second contact 172 of the first intermediate relay is a normally closed contact, and the third contact 173 of the first intermediate relay is a normally open contact. That is, when the coil 170 of the first intermediate relay is not energized, the second contact 172 of the first intermediate relay is closed, and the third contact 173 of the first intermediate relay is open. When the coil 170 of the first intermediate relay is energized, the second contact 172 of the first intermediate relay is open, and the third contact 173 of the first intermediate relay is closed.

[0069] The first contact 191 of the time relay is a normally closed contact, that is, when the coil 190 of the time relay is not energized, the first contact 191 of the time relay is in a closed state. When the coil 190 of the time relay is energized, the first contact 191 of the time relay is in an open state.

[0070] Optionally, the first contact 171 of the first intermediate relay is a normally closed contact.

[0071] Specifically, when the coil 170 of the first intermediate relay is not energized, the first contact 171 of the first intermediate relay is in a closed state. When the coil 170 of the first intermediate relay is energized, the first contact 171 of the first intermediate relay is in an open state.

[0072] In this embodiment of the utility model, the switching states of the second contact 172 of the first intermediate relay, the third contact 173 of the first intermediate relay, and the first contact 191 of the time relay are controlled based on whether the coil 170 of the first intermediate relay and the coil 190 of the time relay are energized. Combined with the switching state of the reset switch 1621, the conduction of the reset module 162 is controlled. When the detection alarm circuit detects that the metal buckle is not properly installed, the reset module 162 stops the buzzer 164 from continuously sounding.

[0073] The technical solution of the embodiment of the present utility model stops the sound of the buzzer 164 by manually resetting the operation when it is detected that the metal clip is not installed in place, thereby realizing an efficient, flexible and safe circuit reset method and improving the reliability, convenience and automation level of the system.

[0074] Based on the above embodiments, the starting and self-locking module 161 , the reset module 162 and the control module 163 can be configured in different forms as needed, which are described in detail below but are not intended to limit the present invention.

[0075] Figure 5 This is another schematic diagram of a metal buckle detection alarm circuit provided by an embodiment of the present invention. Figure 5 As shown, if the metal sensor 110 detects that the metal clip is properly installed, it transmits a signal to the detection switch 1401, causing it to close. This in turn energizes the coil 170 of the first intermediate relay, and simultaneously energizes the first color indicator light 1402 connected in parallel with it, emitting a light to indicate the installation. Since the coil 170 of the first intermediate relay is energized, the first contact 171 of the first intermediate relay is disconnected, and therefore the second color indicator light 1501 is not energized and does not emit light.

[0076] After the start switch 1611 is closed and the buzzer prompt branch 160 is activated, the start switch 1611, being a normally open inching switch, immediately opens after closing. Because the coil 170 of the first intermediate relay is energized, the second contact 172 of the first intermediate relay opens, and the third contact 173 of the first intermediate relay closes, thereby energizing the coil 180 of the second intermediate relay, the coil 190 of the time relay, and the buzzer 164, causing the buzzer 164 to emit a sound. When the coil 180 of the second intermediate relay is energized, the first contact 181 of the second intermediate relay immediately closes, causing the start and self-locking module 161 to self-lock. When the coil 190 of the time relay is energized, the first contact 191 of the time relay does not open immediately, but opens after a preset delay. When the first contact 191 of the time relay is disconnected, the second contact 172 of the first intermediate relay is also disconnected, so the reset module 162 is not energized. The coil 180 of the second intermediate relay, the coil 190 of the time relay, and the buzzer 164 are all deenergized, and the buzzer 164 stops sounding. Thus, when the metal sensing sensor 110 detects that the metal buckle has been properly installed, the buzzer 164 starts sounding when the start switch is closed and stops sounding after the time set by the time relay.

[0077] If the metal sensor 110 detects that the metal clip is not properly installed, the detection switch 1401 is disconnected. Consequently, the coil 170 of the first intermediate relay is de-energized, and the first color indicator light 1402 connected in parallel with it is also de-energized, thus failing to illuminate. When the coil 170 of the first intermediate relay is de-energized, the first contact 171 of the first intermediate relay is closed, energizing the second color indicator light 1501, which then illuminates to indicate the presence of the metal clip.

[0078] After starting switch 1611 closes and starts buzzer prompt branch 160, starting switch 1611, a normally open inching switch, immediately opens after closing. Because coil 170 of the first intermediate relay is not energized, second contact 172 of the first intermediate relay is closed, and third contact 173 of the first intermediate relay is open. At this point, coil 180 of the second intermediate relay, coil 190 of the time relay, and buzzer 164 all receive power, causing buzzer 164 to sound. When coil 180 of the second intermediate relay is energized, first contact 181 of the second intermediate relay immediately closes and self-locks. When coil 190 of the time relay is energized, first contact 191 of the time relay opens after a preset delay.

[0079] When the first contact 191 of the time relay is in the open state, the coil 180 of the second intermediate relay, the coil 190 of the time relay, and the buzzer 164 are still energized, and the buzzer 164 continues to sound. When the reset switch 1621 is activated, that is, when the reset switch 1621 is opened, the coil 180 of the second intermediate relay, the coil 190 of the time relay, and the buzzer 164 are no longer energized, the buzzer 164 stops sounding, and the circuit is reset.

[0080] The present invention also provides a metal buckle detection alarm system, comprising a power supply and a metal buckle detection alarm circuit as provided in any embodiment of the present invention. The power supply supplies power to a positive power supply circuit 120 and a negative power supply circuit 130. The system includes the corresponding modules and benefits of the metal buckle detection alarm circuit provided in any embodiment of the present invention.

[0081] Figure 6 This is a schematic diagram of a button box for a metal buckle detection alarm prompt system provided by an embodiment of the present utility model. Figure 6 As shown, optionally, the metal buckle detection alarm prompt system also includes: a button box 210, the button box 210 is provided with a start switch 1611, a reset switch 1621, a buzzer 164, a first color prompt light 1402 and a second color prompt light 1501.

[0082] The button box 210 integrates the start switch 1611, reset switch 1621, buzzer 164, first color indicator light 1402, and second color indicator light 1501, providing a unified operating interface. This simplifies the operation process and improves the system's ease of use. Operators can quickly identify and use each function button based on the instructions on the button box 210, reducing the possibility of operational errors and enabling quick response, especially in emergency situations.

[0083] For example, the start switch 1611 is marked with SB1, the reset switch 1621 is marked with SB2, the buzzer 164 is marked with FM1, the first color indicator light 1402 is marked with HD1, and the second color indicator light 1501 is marked with HD2.

[0084] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this utility model can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this utility model can be achieved. This is not limited herein.

[0085] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A metal buckle detection alarm prompt circuit, characterized in that: include: A metal induction sensor, a positive power supply circuit, a negative power supply circuit, and a first warning light branch, a second warning light branch, and a buzzer warning branch connected between the positive power supply circuit and the negative power supply circuit; The metal sensing sensor is used to generate a switch closing signal after sensing a metal buckle; The first warning light branch includes a detection switch and a coil of a first intermediate relay connected in series; a control end of the detection switch is electrically connected to the metal induction sensor, and the detection switch is configured to close upon receiving the switch closing signal; the first warning light branch also includes a first color warning light, which is connected in parallel with the coil of the first intermediate relay; The second warning light branch includes a first contact of the first intermediate relay and a second color warning light, and the first contact of the first intermediate relay controls the second color warning light and the first color warning light to light up alternately under the control of the coil of the first intermediate relay; The buzzer prompt branch includes a starting and self-locking module, a reset module, a control module and a buzzer. The starting and self-locking module, the reset module and the control module are connected in series, and the buzzer is connected in parallel with the control module. The second contact of the first intermediate relay is provided in the reset module. After the reset module is started, the prompt duration of the buzzer is controlled by the reset module and the control module.

2. The metal buckle detection alarm prompt circuit according to claim 1, characterized in that: The control module includes: a coil of a second intermediate relay and a coil of a time relay; the coil of the second intermediate relay and the coil of the time relay are connected in parallel.

3. The metal buckle detection alarm prompt circuit according to claim 2, characterized in that: The starting and self-locking module includes: a starting switch and a first contact of the second intermediate relay; the first contact of the second intermediate relay and the starting switch are connected in parallel; the first contact of the second intermediate relay is used to self-lock the starting and self-locking module.

4. The metal buckle detection alarm prompt circuit according to claim 3, characterized in that: The first contact of the second intermediate relay is a normally open contact.

5. The metal buckle detection alarm prompt circuit according to claim 3, characterized in that: The starting switch is a normally open inching switch.

6. The metal buckle detection alarm prompt circuit according to claim 2, characterized in that: The reset module includes: a reset switch, a second contact of the first intermediate relay, a third contact of the first intermediate relay and a first contact of the time relay; The reset switch and the second contact of the first intermediate relay are connected in series to form a first sub-branch; The first contact of the time relay and the third contact of the first intermediate relay are connected in series to form a second sub-branch; The first sub-branch and the second sub-branch are connected in parallel.

7. The metal buckle detection alarm prompt circuit according to claim 6, characterized in that: The reset switch is a normally closed switch; The second contact of the first intermediate relay is a normally closed contact, and the third contact of the first intermediate relay is a normally open contact; The first contact of the time relay is a normally closed contact.

8. The metal buckle detection alarm prompt circuit according to any one of claims 1 to 7, characterized in that: The first contact of the first intermediate relay is a normally closed contact.

9. A metal buckle detection alarm prompt system, characterized in that: include: A power supply and a metal buckle detection alarm prompt circuit as described in any one of claims 1 to 8; wherein the power supply supplies power to the positive power supply circuit and the negative power supply circuit.

10. The metal buckle detection alarm prompt system according to claim 9, characterized in that: Also includes: A button box is provided with a start switch, a reset switch, a buzzer, a first color prompt light and a second color prompt light.

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