CN112066514A - Falling early warning device and method and air conditioning equipment - Google Patents
Falling early warning device and method and air conditioning equipment Download PDFInfo
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 61
- 238000012544 monitoring process Methods 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims description 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The invention discloses a falling early warning device and method and air conditioning equipment. Wherein, the device includes: the first end of the tension wire is connected with the first end of the tension sensor, the second end of the tension wire is fixed on an object to be measured, and the tension on the tension wire changes along with the change of the inclination angle of the object to be measured; the second end of the tension sensor is fixed on the bracket of the object to be detected and is used for monitoring the change of tension on the tension line; and the main control circuit is used for sending out an early warning signal according to the change of the pulling force on the pulling force wire. By the aid of the device and the method, the inclination condition of the object to be detected can be monitored in real time by monitoring the change of the tension on the tension line, so that early warning information is sent before the object to be detected falls, maintenance personnel are prompted to timely handle the object to be detected, and safety accidents or economic losses are avoided.
Description
Technical Field
The invention relates to the technical field of danger early warning, in particular to a falling early warning device and method and air conditioning equipment.
Background
In life, the phenomenon of falling objects from high altitude sometimes occurs. For example, most outdoor units of household air conditioners are installed on the outer wall of a high building, and high-altitude falling accidents can happen.
The installation of outer machine at present mainly leans on special mount to fix or place at the crossbeam of building fixed, later can not regularly inspect again outer machine whether have not hard up, the obscission, can't monitor falling of outer machine, in case the emergence falls, the loss can be very serious. As well as the falling of the indoor unit in the home. It can be seen that, in prior art, after air conditioning unit high altitude installation is fixed, can't monitor the position information of outer machine or interior machine at any time, and then can't carry out the early warning to the condition of falling, cause the problem of potential safety hazard, if will regularly arrange personnel to detect, real-time supervision can't be accomplished to air conditioner quantity many to need pay out certain cost of labor.
The problem of the condition of falling can't carry out the early warning among the prior art, causes the potential safety hazard, has not proposed effectual solution at present.
Disclosure of Invention
The embodiment of the invention provides a falling early warning device and method and air conditioning equipment, and aims to solve the problem that potential safety hazards are caused because the falling condition cannot be early warned in the prior art.
In order to solve the technical problem, the invention provides a falling early warning device, wherein the device comprises:
the first end of the tension wire is connected with the first end of the tension sensor, the second end of the tension wire is fixed on an object to be measured, and the tension on the tension wire changes along with the change of the inclination angle of the object to be measured;
the second end of the tension sensor is fixed on the bracket of the object to be detected and is used for monitoring the change of tension on the tension line;
and the main control circuit is used for sending out an early warning signal according to the change of the pulling force on the pulling force wire.
Further, the tension sensor includes:
the variable resistor is electrically connected with the bracket in a non-electrical mode, the sliding block is connected with the tension line, and the sliding block is used for changing the position when the tension on the tension line changes so as to change the resistance value of the variable resistor;
the variable resistor is connected with the first power supply and the divider resistor in series to form a first conductive loop.
Further, the slider is specifically configured to move in the pulling force direction when the pulling force on the pulling force line increases, so that the effective length of the variable resistor is increased, the resistance value of the variable resistor is further increased, and the voltage between the variable resistor and the voltage dividing resistor is increased.
Further, the master control circuit includes:
the input end of the voltage monitoring module is connected between the variable resistor and the voltage dividing resistor and is used for monitoring the change of the voltage between the variable resistor and the voltage dividing resistor;
and the early warning module is connected to the output end of the voltage detection module and used for sending out an early warning signal according to the voltage change between the variable resistor and the divider resistor.
Further, the voltage monitoring module includes:
a comparator, the inverting input end of which inputs a reference voltage, and the non-inverting input end of which is connected between the variable resistor and the voltage dividing resistor; the comparator is used for outputting a high-level signal when the voltage between the variable resistor and the voltage dividing resistor is increased.
Further, the early warning module comprises:
alarm, second power and switch, the alarm the second power and the switch is established ties and is formed the second conductive loop, the control end of switch is connected the output of voltage monitoring module is used for switching on during the output high level of voltage monitoring module, and then control the second conductive loop switches on, makes the alarm sends early warning signal.
The invention also provides air conditioning equipment, which comprises an inner machine, an outer machine and the falling early warning device; and the internal machine and/or the external machine are/is an object to be detected.
The invention also provides a falling early warning method, which is applied to the falling early warning device and comprises the following steps:
monitoring a change in tension on the tension line; the first end of the tension line is connected with the tension sensor, and the second end of the tension line is fixed on an object to be measured;
and sending out an early warning signal according to the change of the tension on the tension line.
Further, according to the change of the pulling force on the pulling force line, an early warning signal is sent out, and the method comprises the following steps:
monitoring a change in voltage between the variable resistance and the voltage divider resistance;
and sending out an early warning signal according to the change of the voltage between the variable resistor and the divider resistor.
Further, monitoring a change in voltage between the variable resistance and the voltage divider resistance includes:
and when the voltage between the variable resistor and the voltage dividing resistor is increased, controlling the voltage monitoring module to output a high-level signal.
Further, according to the change of the voltage between the variable resistor and the divider resistor, an early warning signal is sent out, and the method comprises the following steps:
after the control voltage monitoring module outputs a high-level signal, a second loop in the early warning module is controlled to be conducted, so that the alarm sends out an early warning signal.
The invention also provides a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the above-mentioned fall warning method.
By applying the technical scheme of the invention, the tension wire is arranged, one end of the tension wire is fixed on the object to be measured, the tension on the tension wire changes along with the change of the inclination angle of the object to be measured, and the change of the tension on the tension wire is monitored by the tension sensor; the main control circuit sends out early warning signals according to the change of the tension on the tension line, and the inclination condition of the object to be detected can be monitored in real time by monitoring the change of the tension on the tension line, so that early warning information is sent out before the object to be detected falls, maintenance personnel is prompted to timely handle the object, and safety accidents or economic losses are avoided.
Drawings
Figure 1 is a block diagram of a fall warning device according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating a position change of an DUT according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating a position change of an DUT according to another embodiment of the invention;
FIG. 4 is a block diagram of a tension sensor according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the operation of a tension sensor according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a master control circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a master control circuit according to another embodiment of the present invention;
fig. 8 is a flow chart of a fall warning method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe power sources in embodiments of the present invention, these power sources should not be limited by these terms. These terms are only used to distinguish between power sources. For example, a first power source may also be referred to as a second power source, and similarly, a second power source may also be referred to as a first power source without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
This embodiment provides a fall warning device, and fig. 1 is a structural diagram of a fall warning device according to an embodiment of the present invention, and as shown in fig. 1, the fall warning device includes:
in the embodiment, the tension line 1 may have an elastic force, and may extend and shorten, or may not have an elastic force, and there is no specific limitation here, and in addition, in order to ensure uniform stress, two or more tension lines 1 may be provided, and the corresponding tension sensors may also be provided as two or more tension sensors; this early warning device that falls still includes: the second end of the tension sensor 2 is fixed on a bracket 5 for placing an object to be measured 4 and is used for monitoring the change of tension on the tension wire 1; and the main control circuit 3 is used for sending out an early warning signal according to the change of the pulling force on the pulling force wire 1.
Fig. 2 is a schematic diagram illustrating a position change of an object to be measured according to an embodiment of the present invention, as shown in fig. 2, after the object to be measured 4 moves to an edge of the bracket 5, there is a risk of falling, at this time, a tension on the tension wire 1 increases, and the tension sensor 2 can detect that the tension on the tension wire 1 increases, so as to transmit a signal indicating that the tension on the tension wire 1 increases to the main control circuit 3, and the main control circuit 3 triggers the early warning signal.
Fig. 3 is a schematic diagram illustrating a position change of an object to be measured according to another embodiment of the present invention, as shown in fig. 3, after the object to be measured 4 inclines to an edge of the bracket 5, there is a risk of falling, and the tension on the tension wire 1 increases, at this time, the tension sensor 2 can detect that the tension on the tension wire 1 increases, so as to transmit a signal indicating that the tension on the tension wire 1 increases to the main control circuit 3, and the main control circuit 3 triggers the warning signal.
The falling early warning device of the embodiment is provided with the tension line, one end of the tension line is fixed on an object to be measured, the tension on the tension line changes along with the change of the inclination angle of the object to be measured, and the change of the tension on the tension line is monitored through the tension sensor; the main control circuit sends out early warning signals according to the change of the tension on the tension line, and the inclination condition of the object to be detected can be monitored in real time by monitoring the change of the tension on the tension line, so that early warning information is sent out before the object to be detected falls, maintenance personnel is prompted to timely handle the object, and safety accidents or economic losses are avoided.
Example 2
In this embodiment, another fall warning device is provided, and fig. 4 is a structural diagram of a tension sensor according to an embodiment of the present invention, as shown in fig. 4, the tension sensor includes: the variable resistor 21 is electrically connected with the bracket 5, the slider 22 is connected with the tension line 1, and when the tension of the slider 22 on the tension line changes, the slider 22 is pulled to change the position, so that the resistance value of the variable resistor 21 is changed.
The tension sensor 2 further comprises a divider resistor 23 and a first power supply Vcc1, and the variable resistor 21 is connected in series with the first power supply Vcc1 and the divider resistor 23 to form a first conductive loop.
Fig. 5 is a schematic diagram of an operation of a tension sensor according to an embodiment of the present invention, as shown in fig. 5, when a tension on a tension wire 1 is increased, a slider 22 moves in a direction of the tension (in a direction of an arrow in the figure), so that an effective length of a variable resistor 21 connected to a first conductive loop is increased, a resistance value of the variable resistor 21 is further increased, and finally an output voltage of a at a sampling point between the variable resistor 21 and a voltage dividing resistor 23 is increased, where the sampling point a is any point between the variable resistor 21 and the voltage dividing resistor 23.
Since the number of the tension lines may be two or more, two or more variable resistors 21 may be provided, and the variable resistors 21 may be connected in series or in parallel, or constant resistors may be connected in parallel at both ends of the variable resistors 21.
Fig. 6 is a schematic structural diagram of a main control circuit according to an embodiment of the present invention, and as shown in fig. 6, in order to send out an alarm message according to a change of a tension on a tension line 1, the main control circuit 3 includes:
the input end of the voltage monitoring module 31 is connected to a sampling point a between the variable resistor 21 and the voltage dividing resistor 23 of the tension sensor 2, and is used for monitoring the voltage change of the sampling point a between the variable resistor 21 and the voltage dividing resistor 23; and the early warning module 32 is connected to the output end of the voltage detection module 31 and is used for sending out an early warning signal according to the voltage change between the variable resistor 21 and the voltage dividing resistor 23. Because the input voltages of the voltage monitoring module 31 and the early warning module 32 need to be ensured within a certain range, the resistance range of the variable resistor 21 and the organization of the divider resistor 23 need to be set according to the maximum working voltages of the voltage monitoring module 31 and the early warning module 32, and the specific design principle is that when the resistance value of the variable resistor 21 is ensured to be maximum, the input voltage of the voltage monitoring module 31 does not exceed the maximum working voltage.
Fig. 7 is a schematic structural diagram of a main control circuit according to another embodiment of the present invention, and as shown in fig. 7, the voltage monitoring module 31 includes:
a comparator a whose inverting input terminal-input reference voltage Vref and non-inverting input terminal + are connected to a sampling point a between the variable resistor 21 and the voltage dividing resistor 23; the comparator a is configured to output a high level signal when the voltage between the variable resistor 21 and the voltage-dividing resistor 23 increases. Specifically, when the object 4 to be tested is at the safe position, which is obtained through experimental tests, the voltage of the sampling point a is set as the reference voltage Vref, or when the object 4 to be tested is at the safe position, a preset value is added on the basis of the voltage of the sampling point a to serve as the reference voltage Vref, so that the reference voltage Vref is slightly higher than the voltage, for example, when the object 4 to be tested is at the safe position, the voltage of the sampling point a is 2.5V, the reference voltage can be set to be 2.51V, and the preset value is not more than 1% of the voltage of the sampling point a.
When the object 4 to be measured is at the safe position, the input voltage of the inverting input end of the comparator a is the reference voltage Vref, the input voltage of the non-inverting input end is also the reference voltage Vref, or is slightly lower than the reference voltage Vref, that is, the input voltage of the non-inverting input end is equal to the input voltage of the inverting input end, or the input voltage of the non-inverting input end is smaller than the input voltage of the inverting input end, therefore, the comparator does not output high level, when the object 4 to be measured is at a dangerous position, that is, to fall, the tension on the tension line increases, the slider 22 moves in the direction of the tension, the effective length of the variable resistor 21 connected to the first conductive loop increases, further the resistance value of the variable resistor 21 increases, thereby the output voltage of a at the sampling point between the variable resistor 21 and the divider resistor 23 increases, the input voltage of the inverting input end of the comparator a is the reference voltage Vref, the comparator outputs a high level.
In order to realize that the object 4 to be measured is in a dangerous position, i.e. about to fall, and send out early warning information when the pulling force on the pulling force line 1 is increased, the above-mentioned early warning module 32 includes: the alarm 321, the second power supply Vcc2 and the switch Q are connected in series to form a second conductive loop, the switch Q is an MOS transistor switch, a gate of the switch Q is connected to the output end of the comparator a, and the switch Q is turned on when the output end of the comparator a outputs a high level, so that the second conductive loop is controlled to be turned on, and the alarm 321 sends out an early warning signal.
Example 3
As shown in fig. 7, a voltage-current conversion circuit (a voltage monitoring module 31 in the above embodiment) is disposed in a main board (a main control circuit 3 in the above embodiment), and the voltage-current conversion circuit detects tension information on a tension line 1 connected to an object to be detected, so as to determine a position of the object to be detected, and predict the falling of the object to be detected on line at any time.
And (3) normal state: the pulling force on the pulling force line is normal value this moment, thereby the mainboard gathers the sampling voltage this moment and judges that the determinand does not have the risk of falling.
Moving and tilting states: the determinand removes, the extension cord 1 is stretched, the pulling force grow, slider 22 in the force sensor 2 is by the change position behind the extension cord 1 pulling, make the increase of variable resistance 21 resistance, and then the total resistance of first loop can grow, the voltage of the sampling point that voltage monitoring module 31 connects can increase, the voltage that makes the sampling point is greater than the reference voltage value that sets up in advance (when the determinand is in safe position, the voltage of sampling point), thereby judge that the determinand has the risk of falling.
The falling early warning device of the embodiment can realize the following technical effects:
1. the reliability of the fixation of the unit is improved, real-time remote and short-range monitoring and early warning are realized, and high-altitude falling accidents caused by loosening and other reasons of the follow-up object to be detected are prevented.
2. The danger troubleshooting process is simplified, and the problems of single safety danger troubleshooting mode and high deployment implementation cost are solved.
3. The installation safety is improved, whether the unit is fixed tightly or not can be monitored when installation personnel install the unit, personal safety of all personnel is guaranteed synchronously, and a plurality of guarantees are provided for installation work.
Example 4
In this embodiment, a fall warning method is provided, which is applied to the fall warning device, and fig. 8 is a flowchart of the fall warning method according to the embodiment of the present invention, as shown in fig. 8, the method includes:
s101, monitoring the change of the tension on the tension line; the first end of the tension line is connected with the tension sensor, and the second end of the tension line is fixed on the object to be measured.
When the object to be measured moves or inclines to the edge of support, there is the risk of falling, and the pulling force increase on the pulling force line this moment detects the circumstances of pulling force increase on the pulling force line through force sensor, can judge the circumstances that the object to be measured removed or inclines.
And S102, sending out an early warning signal according to the change of the tension on the tension line.
After the tension sensor detects the condition that the tension on the tension line is increased, the signal of the increase of the tension on the tension line is transmitted to the main control circuit, and the main control circuit triggers the early warning signal.
According to the falling early warning method, the change of the tension on the tension line is monitored; according to the change of the tension on the tension line, an early warning signal is sent, the inclination condition of the object to be detected can be monitored in real time by monitoring the change of the tension on the tension line, therefore, early warning information is sent before the object to be detected falls, maintenance personnel is prompted to timely handle the object to be detected, and safety accidents or economic losses are avoided.
In this embodiment, in step S101, when the pulling force on the pulling force line changes, the position of the slider is controlled to change, so as to change the resistance value of the variable resistor, and change the voltage between the variable resistor and the voltage dividing resistor. Specifically, when the tension on the tension line is increased, the tension line moves along the tension direction, so that the effective length of the variable resistor is increased, the resistance value of the variable resistor is further increased, and finally the voltage between the variable resistor and the voltage dividing resistor is increased.
Since the tension variation is converted into a voltage signal by the voltage detection module, the step S102 specifically includes: monitoring a change in voltage between the variable resistance and the voltage divider resistance; and sending out an early warning signal according to the change of the voltage between the variable resistor and the divider resistor. Wherein monitoring a change in voltage between the variable resistance and the voltage divider resistance comprises: when the voltage between the variable resistor and the voltage dividing resistor is increased, the voltage monitoring module is controlled to output a high-level signal. Specifically, the voltage monitoring module comprises: a comparator, the inverting input terminal of which inputs a reference voltage Vref, and the non-inverting input terminal of which + is connected to a sampling point a between the variable resistor and the voltage dividing resistor; the comparator outputs a high level signal when a voltage between the variable resistor and the voltage dividing resistor increases. Specifically, when the object to be tested is at the safe position, the voltage of the sampling point a is set as the reference voltage Vref, or when the object to be tested is at the safe position, a preset value is added on the basis of the voltage of the sampling point a to serve as the reference voltage Vref, so that the reference voltage Vref is slightly higher than the voltage, for example, when the object to be tested is at the safe position, the voltage of the sampling point a is 2.5V, the reference voltage can be set to be 2.51V, and the added value is not more than 1% of the voltage of the sampling point a.
When the object to be measured is at the safe position, the input voltage of the reverse input end of the comparator is the reference voltage Vref, the input voltage of the in-phase input end is also the reference voltage Vref, or is slightly lower than the reference voltage Vref, namely the input voltage of the in-phase input end is equal to the input voltage of the reverse input end, or the input voltage of the in-phase input end is smaller than the input voltage of the reverse input end, therefore, the comparator does not output high level, when the object to be measured is at a dangerous position, namely when falling, the pulling force on the pulling force line is increased, the sliding block moves along the pulling force direction, the effective length of the variable resistor connected to the first conductive loop is increased, the resistance value of the variable resistor is further increased, the output voltage of a of the sampling point between the variable resistor and the divider resistor is further increased, the input voltage of the reverse input end of the, the comparator outputs a high level.
After the comparator output high level, can switch on according to the second return circuit among this high level control early warning module, according to the change of the voltage between varistor and the divider resistance promptly, send out early warning signal, include: after the control voltage monitoring module outputs a high-level signal, a second loop in the early warning module is controlled to be conducted, so that the alarm sends out an early warning signal.
Example 5
The embodiment provides an air conditioning equipment, including interior machine and outer machine, wherein, interior machine and/or outer machine still include above-mentioned early warning device that falls for the condition of falling to interior machine or outer machine carries out the early warning, avoids interior machine or outer machine to fall and causes casualties or loss of property.
Example 6
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the fall warning method described above.
The above-described embodiments of the apparatus are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A fall warning device, the device comprising:
the first end of the tension wire is connected with the first end of the tension sensor, the second end of the tension wire is fixed on an object to be measured, and the tension on the tension wire changes along with the change of the inclination angle of the object to be measured;
the second end of the tension sensor is fixed on the bracket of the object to be detected and is used for monitoring the change of tension on the tension line;
and the main control circuit is used for sending out an early warning signal according to the change of the pulling force on the pulling force wire.
2. The apparatus of claim 1, wherein the tension sensor comprises:
the variable resistor is electrically connected with the bracket in a non-electrical mode, the sliding block is connected with the tension line, and the sliding block is used for changing the position when the tension on the tension line changes so as to change the resistance value of the variable resistor;
the variable resistor is connected with the first power supply and the divider resistor in series to form a first conductive loop.
3. The apparatus of claim 2,
the slider is specifically used for moving along the pulling force direction when the pulling force on the pulling force line is increased, so that the effective length of the variable resistor is increased, the resistance value of the variable resistor is further increased, and the voltage between the variable resistor and the divider resistor is increased.
4. The apparatus of claim 2, wherein the master circuitry comprises:
the input end of the voltage monitoring module is connected between the variable resistor and the voltage dividing resistor and is used for monitoring the change of the voltage between the variable resistor and the voltage dividing resistor;
and the early warning module is connected to the output end of the voltage detection module and used for sending out an early warning signal according to the voltage change between the variable resistor and the divider resistor.
5. The apparatus of claim 4, wherein the voltage monitoring module comprises:
a comparator, the inverting input end of which inputs a reference voltage, and the non-inverting input end of which is connected between the variable resistor and the voltage dividing resistor; the comparator is used for outputting a high-level signal when the voltage between the variable resistor and the voltage dividing resistor is increased.
6. The apparatus of claim 4, wherein the early warning module comprises:
alarm, second power and switch, the alarm the second power and the switch is established ties and is formed the second conductive loop, the control end of switch is connected the output of voltage monitoring module is used for switching on during the output high level of voltage monitoring module, and then control the second conductive loop switches on, makes the alarm sends early warning signal.
7. An air conditioning apparatus comprising an inner unit and an outer unit, further comprising a fall warning device according to any one of claims 1 to 6; and the internal machine and/or the external machine are/is an object to be detected.
8. A fall warning method applied to the fall warning device according to any one of claims 1 to 6, the method comprising:
monitoring a change in tension on the tension line; the first end of the tension line is connected with the tension sensor, and the second end of the tension line is fixed on an object to be measured;
and sending out an early warning signal according to the change of the tension on the tension line.
9. The method of claim 8, wherein issuing a warning signal based on a change in tension on the tension line comprises:
monitoring a change in voltage between the variable resistance and the voltage divider resistance;
and sending out an early warning signal according to the change of the voltage between the variable resistor and the divider resistor.
10. The method of claim 9, wherein monitoring a change in voltage between the variable resistance and the divider resistance comprises:
and when the voltage between the variable resistor and the voltage dividing resistor is increased, controlling the voltage monitoring module to output a high-level signal.
11. The method of claim 10, wherein issuing a warning signal based on a change in voltage between the variable resistor and the voltage divider resistor comprises:
after the control voltage monitoring module outputs a high-level signal, a second loop in the early warning module is controlled to be conducted, so that the alarm sends out an early warning signal.
12. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 8 to 11.
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