CN111866820A

CN111866820A - Signal generation method, signal generation device and safety restraint system

Info

Publication number: CN111866820A
Application number: CN201910333657.2A
Authority: CN
Inventors: 刘修平
Original assignee: Unitron Enterprises Zhuhai Co ltd
Current assignee: Unitron Enterprises Zhuhai Co ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-10-30

Abstract

The invention discloses a signal generating method for generating a signal representing the binding state of an object, which comprises the following steps: acquiring a sensing signal from a sensing device arranged on the restrained object and/or the restraining device; and generating a state signal representing the object binding state according to the dynamic characteristic parameter corresponding to the sensing signal and the set binding threshold value. The embodiment of the invention can at least inspect the bound state of the object so as to strengthen the protection effect of the bound device on the bound object.

Description

Signal generation method, signal generation device and safety restraint system

Technical Field

The present invention relates to a signal generating method, a signal generating device and a safety restraint system.

Background

In daily life and work, the demands of people for binding objects are various. The object includes but is not limited to human body, animal or general article, and the scene of the binding requirement includes but is not limited to: safety restraint for babies during transport in a stroller or vehicle, traction restraint for raised pets or livestock, local restraint for patients during medical treatment, safety restraint for players while riding a large amusement device, safety restraint for motor vehicle passengers, and fixation restraint for heavy objects during transport, etc.

The above-mentioned constraint on the object is mostly used to ensure the safety of the constrained object, in some scenes, the constraint is strictly performed as a mandatory requirement — the driver should fasten the safety belt as required in the process of driving the motor vehicle, otherwise, the driver would be penalized due to the violation of the relevant traffic regulations; however, in other situations requiring restraint, the restraint requirement is not enforced, which easily causes the corresponding articles to be separated from the restrained position to cause safety accidents — the pets or livestock which are not pulled and restrained easily frighten or hurt pedestrians, especially children, on the road.

It can thus be seen that in scenarios where a tie-down requirement exists, particularly where there are no relevant regulatory mandates, fulfillment of the tie-down requirement lacks adequate reminder and assurance. In addition, the alertness and the responsibility of people in the fulfillment of the binding requirement can be gradually reduced by long-time safe operation, so that the wrong concept that the binding requirement is a redundant requirement is easily generated, the behavior of untimely and insufficient fulfillment of the binding requirement is caused, and further, a safety accident is caused.

In the process of fulfilling the binding requirement, the binding form of the binding device on the object also influences the binding state of the object. Generally, the binding action on an object is classified into tight binding and loose binding according to whether the object can be relatively displaced with respect to the binding device, and typical tight binding includes: the binding effect of the fixing device on a heavy object in the transportation process, the binding effect of the medical fixing device on the local part of a patient and the like; accordingly, typical loose constraints include: the restraint function of the safety belt on drivers and passengers, the restraint function of the pet traction rope on pets or livestock, the restraint function of the safety helmet or the safety belt on constructors in the production operation process, the restraint function of the safety seat and related accessories on infants and children and the like.

Under the above-mentioned loosely-bound scene, it is often necessary to ensure the safety and comfort of the bound object at the same time, taking the binding to the baby as an example, in the process that the baby takes a motor vehicle through the child seat, the child seat should fully protect the baby through the binding action, so as to strictly limit the moving range of the child seat from exceeding the protection range of the child seat, and at the same time, the degree of tightness of the binding should be properly maintained within the comfort zone of the baby, so as to avoid crying or injury of the baby due to the over-tight binding. In addition, comfort is also an important factor that affects the subjective intention of the person being restrained to protect against restraint, and for some motor vehicle drivers or passengers, an uncomfortable harness may reduce their intention to wear the harness on their own initiative, even if traffic regulations impose it.

While loose restraint comfort is a concern, it is also desirable that the restraint be implemented in a reasonable, safe manner with additional concerns. In particular, loose restraint does not guarantee a full-face snug restraint of the restraint device to the restrained object, but it is necessary to guarantee that the critical restraining points are restrained to the object in a reasonable manner, so as to produce a sufficient protection effect to the restrained object in the case of a possible safety accident. Taking the wearing of a safety helmet as an example, the protection of the head of a human body by the safety helmet is a typical loose-bound scene, namely, the safety helmet and the head of the human body are contacted with each other only in partial positions, and other positions between the safety helmet and the head of the human body are provided with enough gaps, at this time, if a tying belt for tying is not tied to the jaw by two cheeks correctly, the safety helmet is extremely easy to fall off and cannot protect the head of the human body from being injured by a falling object from the upside.

The existing binding device lacks of inspection and reminding of binding state, and is difficult to be aware of the binding state such as whether the binding is fulfilled or not and whether the binding is fulfilled in a qualified manner at a key binding point in a scene of forced binding, so that reminding can not be provided for personnel who implement the binding, and the binding device is difficult to exert the due function.

Disclosure of Invention

At least one object of the present invention is to provide a signal generating method, a signal generating device and a safety restraint system, which can check the restraint state of an object to enhance the protection effect of the restraint device on the restrained object.

The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a signal generating method for generating a signal representing the binding state of an object, the method comprising the following steps:

acquiring a sensing signal from a sensing device arranged on the restrained object and/or the restraining device;

and generating a state signal representing the object binding state according to the dynamic characteristic parameter corresponding to the sensing signal and the set binding threshold value.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or following paragraphs of the present invention, the sensing device includes an inductive switch, the dynamic characteristic parameter includes a level parameter, and before acquiring the sensing signal, the method further includes:

when the inductive switch induces that an object is contacted or not contacted, the corresponding level parameters are respectively output as sensing signals.

As an optimization of any one of the solutions or any one of the optimized solutions provided in the foregoing or the following of the present invention, the method further comprises:

the number of times of acquisition of the sensing signal is counted in a first cycle, and the step of generating the state signal indicating the object-bound state is performed when the counted result exceeds a first count threshold.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the step of generating a status signal indicating a restraining status of the object further includes:

comparing the level parameter with a first set level value; and

when the level parameter is higher than the first set level value, a state signal with good object binding state is generated, and when the level parameter is lower than or equal to the first set level value, a state signal with poor object binding state is generated.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or following paragraphs of the present invention, the at least one inductive switch is capable of generating at least one level parameter, and the step of generating the status signal indicating the restraining status of the object further includes:

comparing the at least one level parameter with a second set level value, respectively; and

when all the at least one level parameters are higher than the second set level value, a state signal with good object binding state is generated, and when any one of the at least one level parameters is lower than or equal to the second set level value, a state signal with poor object binding state is generated.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the sensing device includes a pressure sensor, the dynamic characteristic parameter includes a pressure-time variation parameter, and before acquiring the sensing signal, the method further includes:

the pressure sensor outputs a continuous sensing signal with respect to the pressure-time varying parameter.

And integrating the pressure-time variation parameter with respect to time according to a second period to obtain a first integrated value, and performing the step of generating the state signal indicating the object-restrained state when the first integrated value is greater than a first set work done value.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the step of generating a status signal indicative of the restraining status of the object includes:

and calculating the difference between the pressure-time change parameter and the pressure-time change parameter in the last second period, thereby obtaining a calibrated pressure-time change parameter.

As an optimization of any one of the solutions or any optimized solutions provided in the foregoing or following paragraphs of the present invention, after obtaining the calibrated pressure-time variation parameter, the step of generating a status signal indicative of the restraining status of the object further comprises:

integrating the calibration pressure-time variation parameter with respect to time according to a third period to obtain a second integrated value;

comparing the second integral value with a second set work done value; and

and generating a state signal with good object binding state when the second integral value is larger than the second set work value, and generating a state signal with poor object binding state when the second integral value is smaller than or equal to the second set work value.

calculating the difference between the maximum pressure and the minimum pressure of the calibration pressure-time variation parameter in the fourth period according to the fourth period;

comparing the difference value with a first set amplitude; and

when the difference is larger than the first set amplitude, a state signal with poor object binding state is generated, and when the difference is smaller than or equal to the first set amplitude, a state signal with good object binding state is generated.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, at least two of the pressure sensors are capable of generating at least two pressure-time variation parameters, and the step of generating a status signal indicative of the restraining status of the object includes:

summing said at least two pressure-time variation parameters;

integrating the sum over time to obtain a third integral value;

comparing the third integral value with a third set work done value; and

When the third integrated value is greater than the third set work value, a state signal of good object binding state is generated, and when the third integrated value is less than or equal to the third set work value, a state signal of bad object binding state is generated.

The present application also provides a signal generating device configured to perform all the steps of the signal generating method described in any one of the preceding paragraphs.

The present application further provides a safety restraint system comprising:

a restraint device for restraining an object;

a sensing device disposed on the restrained object and/or the restraining device;

signal generating means according to the preamble; and

and the alarm device is in communication connection with the signal generating device and can output alarm information according to the received state signal which represents the object binding state.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the binding apparatus includes:

a cap body;

a strap disposed on the cap body for restraining the cap body to a set position of the head;

the sensing device includes:

a pressure sensor or inductive switch disposed at the cap and/or the strap for measuring pressure between the head and the cap and/or the strap.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the inductive switch includes a capacitive touch inductive switch or a flexible membrane switch.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the safety restraint system further includes:

the Bluetooth transmitting end is arranged on the cap body and/or the lacing, is in communication connection with the signal generating device and is used for transmitting a state signal representing the binding state of an object; and

and the Bluetooth receiving end is in communication connection with the alarm device and is used for receiving the state signal.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the alarm device includes:

the warning lamp is configured to emit red flashing light when receiving the state signal that the object constraint state is poor, and does not emit light or emit green light when receiving the state signal that the object constraint state is good; and

the buzzer or the loudspeaker is configured to give out a warning sound effect when receiving the state signal that the object constraint state is poor, and not give out sound when receiving the state signal that the object constraint state is good.

As an optimization of any one of the previous or later aspects of the invention or any optimized aspect thereof, the inductive switch is at least one and is disposed on the cap or the strap, and the safety restraint system is configured to:

and calculating the sensing signals of the inductive switches, and triggering the alarm device when the sensing signal of any inductive switch corresponds to a state signal with a bad object binding state.

As an optimization of any one of the previous or subsequent aspects of the invention or of any one of the subsequent aspects, the pressure sensors are at least one pair and are symmetrically disposed on the cap and/or strap, the safety restraint system is configured to:

the sensing signals of each pair of the pressure sensors are weighted and then subjected to summation calculation, and based on the result of the summation calculation, a state signal representing the state of the object being bound is generated.

As an optimization of any one of the solutions or any optimized solutions provided in the foregoing or in the following, the means for generating a signal indicative of the object restraining status is further configured to:

having different said set restraint thresholds based on a degree of tightness of restraint of said cap and/or said harness to the head at a location where said each pair of pressure sensors are disposed on said cap and/or said harness.

the intelligent terminal with the Bluetooth receiving end can send out image information and/or voice information indicating that the binding state of the safety binding system is poor based on the state signal indicating the binding state of the object received by the Bluetooth receiving end.

As an optimization of any of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the intelligent terminal is further configured to:

through the received signals, when the safety restraint system restrains the object and the intelligent terminal is far away from the Bluetooth transmitting terminal and exceeds a set distance, image information and/or voice information representing that a wearer of the safety restraint system is left are sent out.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or following paragraphs of the present invention, the intelligent terminal may play a preset audio file or a preset video file, and the intelligent terminal is further configured to:

and when a state signal with a good object constraint state is received, playing the audio file or the video file, and when a state signal with a bad object constraint state is received, stopping playing the audio file or the video file.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the smart terminal can be locked for operation, so as to prohibit an operation behavior of a user, and the smart terminal is further configured to:

the locking operation is released when a state signal that the object restrained state is good is received, and the locking operation is performed when a state signal that the object restrained state is not good is received.

Based on the technical scheme, the embodiment of the invention can at least inspect the bound state of the object so as to strengthen the protection effect of the bound device on the bound object.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic diagram of a safety restraint system for head protection according to an embodiment of the present invention;

fig. 2 is a schematic flow chart illustrating a signal generating method according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart illustrating another signal generating method according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart illustrating another signal generation method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a connection structure of a safety restraint system according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a connection structure of a safety restraint system according to an embodiment of the present invention;

fig. 7 is a waveform diagram of a continuous sensing signal of a pressure-time variation parameter sensed by the sensing device in the signal generating method according to the embodiment of the present invention.

Detailed Description

The contents of the present invention and the points of distinction between the present invention and the prior art can be understood with reference to the accompanying drawings and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown.

It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any technical means provided by the invention can be replaced or any two or more technical means or technical characteristics provided by the invention can be combined with each other to obtain a new technical scheme.

Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without inventive efforts and new technical solutions that can be obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.

The object binding state comprises three states of good binding, poor binding or no binding of the object. Generally, good binding of an object is the state of binding that a binder wishes to obtain, while poor binding and no binding are detrimental in certain specific situations. It is therefore necessary to assess the binding status for specific application scenarios where both poorly bound and unbound conditions are prone to harmful results and to signal the resulting binding status to a specific device receiving the signal, e.g. an alarm device, in order to avoid the occurrence of harmful results.

To obtain the bound state of the object, it is necessary to first arrange a corresponding sensing device on the bound object and/or the binding device, so as to convert the physical state of the bound state into a dynamic characteristic parameter which can be converted into a signal. A typical sensing device includes a device for converting physical quantities such as pressure, distance, acceleration, etc., and is disposed on the restrained object and/or the restraining device, so that the magnitude of the acting force and/or the magnitude of the gap between the restrained object and the restraining device can be evaluated by the action or movement between the restrained object and/or the restraining device, thereby estimating the restraining state of the restrained object.

After the sensing device sends out the sensing signal, the method provided by the invention further receives the sensing signal and takes the corresponding dynamic characteristic parameter as an object for evaluating the binding state of the object. Specifically, when the sensing signal measured by the sensing device is a contact state with an object, the corresponding dynamic characteristic parameter may include a level value; when the sensing signal measured by the sensing device is a pressure signal, the corresponding dynamic characteristic parameter can be a pressure-time dynamic parameter; and when the sensing signal measured by the sensing device is a distance signal, the corresponding dynamic characteristic parameter may include a voltage value representing the distance. For the dynamic characteristic parameters obtained according to different sensing signals, the method provided by the application can perform subsequent operation on the dynamic characteristic parameters based on electricity through a computing circuit, so as to generate a state signal representing the binding state of the object.

The inductive switch can detect whether an object is in contact with the inductive switch by applying principles of infrared induction, microwave induction, ultrasonic induction, piezoelectric induction, electromagnetic induction or capacitance induction and the like. In this application, the inductive switch may be a touch inductive switch or a thin film inductive switch, for example, a capacitive touch inductive switch, a resistive touch inductive switch, a flexible thin film switch, a rigid thin film switch, a planar thin film switch, or a convex thin film switch may be selected, so as to output a corresponding sensing signal when the sensing device senses that an object touches the sensing device.

In addition, the pressure sensor may be a trigger sensor, for example, a capacitive touch sensitive switch, a flexible membrane switch, or a membrane pressure sensor, so as to output a corresponding sensing signal when the sensing pressure exceeds the first pressure threshold. The flexible membrane switch has lower implementation cost, but the requirement on the sensitivity of the pressure sensor is difficult to achieve due to the lower sensitivity of the flexible membrane switch; the capacitive touch sensitive switch and the membrane pressure sensor both have a high sensitivity, while the capacitive touch sensitive switch has a lower implementation cost relative to the membrane pressure sensor, and thus costs a preferred implementation of the pressure sensor.

Further, the inductive switch can output different level parameters according to whether an object is in contact with the inductive switch, a typical inductive switch can send out a high level parameter when the object is in contact with the inductive switch, and can output a low level parameter or no level parameter when the object is not in contact with the inductive switch. The high level, low level or no level parameters can be used as sensing signals to generate a state signal representing the binding state of the object.

The setting of the first period and counting the number of times of acquiring the sensing signal in the first period can help the method provided by the invention to identify the unbound scene of the object. Specifically, each time the sensing switch senses the basis of an object, it is output in the form of a sensing signal. During the first period, when the count of the sensing signal does not exceed the first count threshold, it indicates that the inductive switch disposed on the restraining device and/or the restrained object may be actuated by a motion other than a restraining form, such as a motion of picking up a seat belt in a motor vehicle during a cleaning process, and the operation of generating the status signal indicating the restrained state of the object is not performed; accordingly, when the count of the sensing signals exceeds the first count threshold during the first period, which indicates that the object is bound by the binding device whether the object is poorly bound or well bound, a subsequent signal binding step to the object binding state should be performed.

The length of the first period and the setting of the first counting threshold value can be comprehensively determined according to various factors such as the natural frequency of the bound object and the bound device, the natural frequency of the set environment, possible motion and the like. For example, when the restraint device is a seat belt and is disposed in a vehicle, the first period and the first count threshold may be determined comprehensively according to the tightness of the seat belt and the vehicle seat, the body size of a restrained object, i.e., a driver or a passenger, and the moving speed of the vehicle. In addition, the length of the first period and the setting of the first count threshold may further include a self-attribute of the inductive switch, for example, a sensitivity of the inductive switch, that is, a quotient obtained by dividing the first period by the first technical threshold should not be higher than the sensitivity of the inductive switch.

comparing the level parameter with a first set level value; and

In general, the level value obtained by the inductive switch can be used to evaluate the pressure to which the object is subjected. In the evaluation process, the level parameter is compared with a first set level value, when the level parameter is higher than the first set level value, a state signal with good object binding state is generated, and when the level parameter is lower than or equal to the first set level value, a state signal with poor object binding state is generated.

In addition, since the state of whether the inductive switch is in contact with the object is converted into a level value, the comparison circuit or the comparator in general can evaluate the magnitude-relative relationship between the level parameter and the first set level value relatively quickly and accurately.

When the number of the inductive switches is unique, the evaluation of the bound state of the bound object needs to rely on the unique inductive switch, namely, rely on the level parameter output by the unique inductive switch, and preset a second set level value between the high level value and the low level value/zero level value output by the unique inductive switch, so as to realize the output of the state signal representing the bound state of the object through comparison operation.

When the number of the inductive switches is not unique, the inductive switches are usually located in each area where the constraint condition needs to be strictly monitored, and therefore, the calculation of the condition signal needs to be performed depending on all the inductive switches. In the case of tight binding, the bound object is usually bound by the binding device in a manner of simultaneous contact at multiple points. To ensure an accurate assessment of the restraining state, a sensing switch is arranged in each area of the restraining device in contact with the restrained object. In this case, it is conceivable that only when the level parameters outputted from all the induction switches correspond to good binding states, it means that the object is bound well as a whole; when the level parameter outputted by any one or more inductive switches corresponds to a poor binding state, it means that the bound object is not well bound at one or more contact points.

Further, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the sensing device includes a pressure sensor, the dynamic characteristic parameter includes a pressure-time variation parameter, and before acquiring the sensing signal, the method further includes:

In a general sense, the continuous sensing signal obtained by the pressure sensor about the pressure-time variation parameter is represented in the form of a waveform diagram, wherein the horizontal axis of the waveform diagram is time, and the vertical axis of the waveform diagram is pressure; the amplitude of the waveform represents the pressure difference between the pressure peaks and valleys measured by the pressure sensor; when the waveform fluctuates up and down relative to a certain pressure value, the pressure value represents the average value of the pressure borne by the pressure sensor or the pressure value borne by the pressure sensor in a static state; further, the integral of the waveform of the pressure-time variation parameter with respect to the horizontal axis represents the work of the binding device and/or the bound object on the pressure sensor.

Based on the continuous sensing signal of the pressure-time change parameter, the method provided by the invention can more intuitively master the stress state of the pressure sensor and can more accurately judge the binding state of the object. In addition, by carrying out proper mathematical operation on the continuous sensing signals in the waveform form, the method provided by the invention can more accurately judge different binding states based on different waveform variation trends.

Specifically, when the fluctuation amplitude of the continuous sensing signal of the pressure-time variation parameter is small and the pressure value about which the fluctuation is close to the horizontal axis, it represents that the pressure sensor is not influenced by the external pressure, or the pressure influence is small, further explaining that the restrained object and/or the restraining device provided with the pressure sensor is in a free state, that is, the object is in an unbound state; when the fluctuation amplitude of the continuous sensing signal of the pressure-time variation parameter is large, and the pressure value related to the fluctuation deviates from the horizontal axis, the bound object and/or the binding device provided with the pressure sensor is in a pressed state, namely, the object is in a bound state.

Further, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the method further comprises:

The setting of the second period, the integral operation of the pressure-time change parameter with respect to time, and the comparison of the first integral value with the first set work-done value can help the method provided by the present invention to identify the unbound scene of the object more accurately.

It is conceivable that, when the pressure sensor does not measure the pressure, the resultant integrated value of the pressure-time change parameter obtained by the integration operation with respect to time is generally relatively small, and even an integrated value close to zero is obtained because the pressure-time change parameter may fluctuate about the horizontal axis; when the pressure sensor measures the pressure, the integral value obtained by integrating the obtained pressure-time variation parameter with respect to time is usually large and generally fluctuates not with respect to the horizontal axis but with respect to a specific pressure value. Based on this, it is objective and accurate to use the integrated value as a criterion for evaluating the state of constraint corresponding to the pressure-time variation parameter measured by the pressure sensor. In addition, the integration operation can be performed by means of the existing integration operation circuit or the existing integration operator, so that the realization difficulty and the realization cost are lower.

For the integration operation, the analog signal has higher resolution and accuracy than the digital signal, so the pressure-time variation parameter obtained by the pressure sensor is preferably a continuous waveform image, i.e. output in the form of an analog signal. Correspondingly, if the integral operation is not necessary and the digital signal format can reach higher precision, the pressure-time change parameter measured by the pressure sensor can be further subjected to analog-to-digital conversion by the A/D conversion module, so that the subsequent comparison operation and logic operation are facilitated.

The selection of the second period and the first set power value is similar to the aforementioned setting of the length of the first period and the first count threshold, and is not repeated here.

Further, as an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or the following, the step of generating a state signal indicating the binding state of the object includes:

The difference calculation is carried out on the pressure-time change parameters of two continuous periods, so that the influence of the natural frequency of the pressure sensor or the environment where the pressure sensor is located on the accuracy of the measured dynamic characteristic parameters can be eliminated simply, conveniently and accurately. Particularly, after the pressure sensor senses the pressure change, the waveform measured by the pressure sensor is subtracted from the waveform before the pressure change is sensed, so that a relatively pure image of the pressure-time change parameter caused by the external pressure change is obtained, and the accumulated error possibly caused by the system error is eliminated as much as possible in the subsequent calculation process.

Further, as an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or the following, after obtaining the calibrated pressure-time variation parameter, the step of generating the status signal indicating the restraining state of the object further includes:

comparing the second integral value with a second set work done value; and

The second integral value obtained by integrating the calibration pressure-time variation parameter with respect to time in the third period is obtained based on the calibration pressure-time variation parameter, and the net integral of the external pressure applied to the pressure sensor, which is affected by the natural frequency of the pressure sensor itself and the natural frequency of the environment, is eliminated. Therefore, by comparing the second integrated value with the second set work value as a target of determination, the action of the external pressure of the pressure sensor can be evaluated, and whether the restrained object is in a good restrained state or a poor restrained state can be obtained.

Since the restraining action of the restraining device on the object, in particular in the loosely restrained state, is accompanied by the movement of the restrained object within the permitted range at all times, for example when a child is restrained in a child seat or a baby carriage, the restraint of the child by a safety belt or a restraining belt allows the child to move within a certain range, the pressure sensor will be able to obtain a pressure-time continuously fluctuating image until the restraining device gives up the restraining action on the restrained object.

The evaluation of the state of restraint can be carried out by means of the second integrated value and its corresponding physical meaning: when the binding state of the binding device to the bound object is poor, the object often cannot obtain enough binding pressure, and the binding device does not work enough on the bound object at the moment, so that the position state of the bound object is difficult to limit; on the contrary, when the object is well bound, the pressure of the binding device on the bound object is sufficient, and the binding device can do enough work aiming at the possible movement of the bound object, so as to achieve a good binding effect. Thus, the second set work value is established and compared with the second integrated value, and a conclusion can be drawn whether the object is well bound.

comparing the difference value with a first set amplitude; and

The bound state of the object can be evaluated from the aspects of pressure and work of the bound object by the bound device, and the bound state of the object can also be judged according to the moving, vibrating or shaking state of the bound object. Specifically, when the object is well bound, the movement of the bound object is more limited by the binding device, and the amplitude of the movement, shaking or vibration of the object is smaller at the moment, and correspondingly, the amplitude on the waveform diagram of the calibration pressure-time variation parameter is smaller; when the object is not well constrained, the magnitude of its movement, vibration or sloshing is generally large, as is the amplitude reflected on the waveform map of the calibration pressure-time variation parameter. Based on this, the first set amplitude can be set to evaluate the amplitude on the waveform diagram of the calibration pressure-time variation parameter of the restrained object, so as to deduce the restrained state of the object.

Correspondingly, the evaluation of the movement, shaking or vibration amplitude of the object may also be performed by means of a displacement sensor or an acceleration sensor, and the setting mode, the analysis and the processing steps of the sensing signal correspond to the method based on the pressure sensor, and are not described herein again.

Further, the calibration pressure-time variation parameter may be applied based on two evaluation criteria, namely, pressure of the binding device, work or amplitude of movement, shaking or vibration of the bound object. When the method provided by the invention is used for generating the signal representing the object binding state, the flexible selection can be carried out according to the specific binding scene, the binding requirement of the bound object and the characteristics of the binding device. For example, when the restrained object is allowed to move within a certain range, and people pay attention to the restraining acting force which can be provided by the restraining device on the restrained object, pressure or work can be selected as the standard for evaluating the restraining state of the object; on the other hand, when a scene in which the object to be restrained does not move as much as possible is required, the amplitude can be used as a criterion for evaluating the restrained state of the object.

Summing said at least two pressure-time variation parameters;

integrating the sum over time to obtain a third integral value;

comparing the third integral value with a third set work done value; and

When at least two pressure sensors are arranged, the at least two pressure-time change parameters need to be processed, and at this time, the at least two pressure-time change parameters are subjected to addition operation and then integration operation, and then are compared with a third set work doing value to determine the binding state of the bound object.

It should be noted that, since each of the at least two pressure-time variation parameters represents the pressure condition sensed by the corresponding pressure sensor, and the pressure sensor is set at the setting position of the restrained object and/or the restraining device, in the process of summing the at least two pressure-time variation parameters, the setting position of each pressure sensor may be considered, and the weighting processing may be performed on each pressure-time variation parameter in the summing operation.

The state signal which is generated by the signal generating device and represents the binding state of the object can be generated by: the Bluetooth wireless transmission mode-the transmitting process and the receiving process of signals are independent, the safety of signal transmission is higher, but the transmission distance is limited; an infrared wireless transmission mode, namely the emission process and the receiving process of signals are independent, the distance of signal transmission is far away compared with that of Bluetooth, but infrared rays can cause certain risks if the infrared rays directly irradiate the glasses; ultrasonic or light wave radar transmission, which is the transmission distance of signals, is long, but the cost is high; and/or high frequency transmitting devices and 3G, 4G communication devices, which can be connected with public network for service, can transmit monitoring signals and videos at long distance, and has the disadvantages of cost and high frequency radiation damage.

In view of the advantages and disadvantages of the different transmission modes, the most suitable transmission mode can be selected according to the scene characteristics of the constraint occurrence, or two or more signal transmission modes can be selected for combined transmission, so as to take into account the advantages and disadvantages of the different signal transmission modes.

Further, the signal generating devices may be implemented or performed with circuits usable Integrated Circuits (ICs), general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combinations thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

The present application further provides a safety restraint system comprising:

a restraint device for restraining an object;

signal generating means according to the preamble; and

The safety binding system is used for ensuring the binding safety of bound objects by timely alarming for poor binding state in a scene needing binding. The safety binding system can have an integrated structure, namely the sensing device, the signal generating device and the alarm device are all arranged in the range of the binding device and/or the bound object, so that the binding device can receive a binding state prompt in real time when being arranged on the bound object; correspondingly, the safety restraint system can also have a split type structure, namely, the sensing device, the signal generating device and the alarm device are respectively arranged in different areas, so that the sensing device is closer to the area where the restraint occurs, and the alarm device is closer to the area where the alarm signal needs to be received, and the safety restraint system has higher flexibility in arrangement.

The communication connection mode between the alarm device and the signal generating device can be a wired transmission mode, and the alarm device can be correspondingly arranged nearby the signal generating device; of course, the communication connection mode can also be a wireless transmission mode, such as bluetooth wireless transmission, so that the setting position between the alarm device and the signal generating device is not limited by the distance any more, and a state signal can be sent to the alarm device within a certain range in time when poor restraint occurs, so as to improve the alarm range of the safety restraint system.

Further, in order to protect the safety of the head region of the human body, as an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the binding apparatus comprises:

a cap body;

the sensing device includes:

The safety restraint system provided with the cap body and the strap can be used in a scene requiring restraint protection of a human head, typical scenes including an environment requiring wearing of a safety helmet, such as a construction site, driving of a motorcycle/racing car, and the like, and an environment requiring traction fixation of a head, such as traction of a head during medical treatment to treat head or neck diseases, prevention of whiplash injury to a driver or passengers (especially children) during driving of a vehicle due to sudden stop, and the like.

Further, in a safety restraint system for restraining and protecting a head, it is preferable that the signal generating device is connected to the alarm device by wireless communication, and therefore, as an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or following of the present invention, the safety restraint system further includes:

Further, in order to make the alarm effect of the alarm device of the safety restraint system stronger, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or in the following, the alarm device includes:

The warning light, the buzzer or the loudspeaker can also adopt other alarm modes, for example, the warning light can respectively correspond to different binding states of the object by flashing lights with different frequencies, and the loudspeaker can directly broadcast the binding states by voice, so that the binding device and the bound object can be conveniently adjusted by a binding operator.

In a scenario where restraint protection is required, especially in tight restraint situations where the requirements for proper wearing of the restraint device are severe, all critical locations of the restraint device should be provided with said inductive switch. At this point, the safety restraint system is configured to trigger the alarm device when either of the inductive switches senses poor wear. Under this concept, the inductive switch should be disposed in the area where the cap or the strap is closely attached to the head, such as in the area where the strap is attached to the chin, the cap is attached to the top of the head, and the band in the cap is attached to the forehead and the back of the brain.

When the contact state of the inductive switch at any position with the object is corresponding to the state of poor object binding state, the safety binding device can correspondingly send out the information that the binding device is not well bound, and the adjustment or the re-wearing of the safety binding device is reminded, so that the potential hazard caused by untieing the binding belt of the bound person due to unwilling wearing of the safety binding device is avoided. In addition, set up inductive switch in a plurality of different positions of safety restraint device, can also further avoid being restrained the condition that the people pressed inductive switch and the constraint state "made fake" that causes by the hand, as long as the people that is restrained can't contact simultaneously with reasonable mode to all inductive switch that set up in different positions with the hand and press, the safety restraint system can both be corresponding sends the bad signal of constraint state to remind operating personnel to adjust the safety restraint device through the alarm.

For the cap body and/or the lacing, the pressure sensor can be arranged on the basis of the force application point of the head of a human body when the head is restrained, for example, the pressure sensor can be arranged at the position, close to the cheek, of the lacing, so that the pressure of the head is sensed from the left direction and the right direction; or the pressure sensor can be arranged at the part of the lacing close to the lower jaw and the part of the cap body close to the top of the head so as to sense the pressure of the head from the up-down direction; correspondingly, the pressure sensing device can also be arranged at the part of the cap body close to the forehead and the area of the cap body close to the back part of the head, so that the pressure sensing is carried out on the head from the front-back direction.

The above-mentioned pressure sensing of the head from the left-right, up-down, and front-back directions is an omnidirectional detection of the head restraint state based on the orthogonal coordinate system, and in the process of summing, different weighting values should be given in consideration of the degree of tightness of restraint of the different portions of the cap body and the strap on the head.

Furthermore, in order to further improve the accuracy of the status signal generation under different binding tightness requirements at different locations, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following, the device for generating a signal representing the binding status of an object is further configured to:

Through the difference setting of the set binding threshold corresponding to the sensing signals sent by the pressure sensors at different positions, the safety binding system can monitor the multi-path binding states sent by the pressure sensors at multiple positions simultaneously, and can give an alarm prompt with convergence according to the set rule.

The following description will be made by taking as an example the case where the head is restrained for the purpose of preventing whiplash injury: in order to prevent the whiplash injury caused by the fact that the head of a passenger on a vehicle shakes forward and backward violently in a short time due to inertia effect caused by emergency stop or frontal collision of the passenger in the running process of the motor vehicle, the head of the passenger and the trunk of the passenger are fixed on the seat relatively without sudden and large-amplitude relative shaking through the cap body and the tying belt which enable the passenger to wear the cap body and the tying belt to be restrained on the seat under the condition that the passenger wears a safety belt correctly.

It can be seen that the above precautions against whiplash injury need to be based on two constraints: the first is the restraint effect of the cap body and the lacing on the head of the passenger, and the second is the restraint effect of the safety belt on the trunk of the passenger, and the first is not necessary. Based on this, the safety restraint system that this application provided can be through respectively in the area that the frenulum is close to the chin sets up chin pressure sensor, sets up truck pressure sensor in the area of safety belt and passenger truck contact to further based on to the head constraint and to the different elasticity requirements of truck constraint, set up differently set for and tie the threshold value, thereby when arbitrary one constraint state is bad, through the signal transmission of bluetooth transmitting terminal and bluetooth receiving terminal, make alarm device sends the police dispatch newspaper.

Under the above-mentioned scene of preventing getting rid of the whip damage, it is equally important to the constraint demand of human trunk and head, consequently alarm device's trigger rule sends the warning promptly for unsatisfying the constraint demand of any department. In other scenarios, the sensing signals generated by the sensing devices may follow the triggering rules of other alarm devices, for example, if the binding requirements of a set number of parts are met, the bound state of the bound object is considered to be good, or if the binding requirements of only one part are met, the bound state of the bound object may be considered to be good. Based on a logic calculation circuit or a logic calculator, the safety restraint system provided by the invention can simultaneously monitor the multi-path restraint states sent by the sensing devices at a plurality of positions and carry out convergent alarm prompting according to a set rule.

Further, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the safety restraint system further includes:

The intelligent terminal with the Bluetooth receiving end can comprise a smart phone, a smart tablet, a smart watch and the like, and the intelligent terminal can provide more timely and accurate state signals and alarm information about the object binding state for a user of the intelligent terminal due to the fact that the intelligent terminal is close to the user.

Further, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the intelligent terminal is further configured to:

The intelligent terminal can be based on the bluetooth range finding principle, infrared range finding keep away from or laser range finding principle measure with distance between the bluetooth transmitting terminal to additionally provide the distance alarming function. For the situation that a child is left in a motor vehicle and the like, the image information and/or the voice information which are sent by the mobile terminal and represent that the wearer of the safety restraint system is left can help the user of the intelligent terminal to avoid the children from being left in the vehicle. In addition, based on the binding state of the binding device, the image information and/or voice information left by the wearer of the safety binding device is only sent to the intelligent terminal under the condition that the binding device is well bound and poorly bound, so that the false alarm rate of left information is further reduced.

Of course, based on the status signal received by the bluetooth receiving end, the safety restraint system may also use a combination of an independent bluetooth receiving end and an active buzzer to perform sound alarm. The power supply to the active buzzer can adopt a USB power supply mode, so that the power supply device is convenient to be applied to any occasions where the power supply to the active buzzer can be carried out, such as a motor vehicle provided with a USB socket. In addition, the combination of the independent Bluetooth receiving end and the active buzzer has lower implementation cost and smaller size, is convenient to flexibly implement in various environments, and can effectively prevent supervision shortage caused by the fact that a guardian forgets a mobile phone or other intelligent terminals or the intelligent terminals are set to be in a flight mode or an interference-free mode and cannot receive an alarm aiming at the bad constraint state in a scene where the guardian needs to consciously supervise the constraint state of passengers (particularly child passengers).

Based on this, with the form of independent bluetooth receiving terminal and active buzzer combination the alarm device can be set up in the inside of motor vehicle widely, for example the school bus, cooperate with sensing device and supporting signal generator who sets up on each seat belt, can realize the dynamic control to every seat belt restraint state, make things convenient for the driver of motor vehicle or managers in time to adjust the safety belt of bad restraint state to guarantee passenger's safety in real time.

Further, the image information and/or voice information left by the wearer of the safety restraint system can be output to a wider range, for example, to an intelligent terminal within a certain distance, or to a local area network, a local area broadcast, and/or a police system, so as to ensure the safety of the restrained person.

Only through the flow of poor binding state, alarm signal generation and re-wearing or adjustment of the safety binding device by the operator, the wearer and the operator of the binding device are easily bored due to frequent alarm, so that the subjective wearing will and the power for timely adjustment of the safety binding device are reduced, and the alarm signal cannot play a due reminding role.

Based on this, this application through set up that the constraint state is good-not produce alarm signal-intelligent terminal broadcast audio frequency or video file/intelligent terminal unblock this flow of operation, let the person of wearing and constraint device's operating personnel receive forward feedback easily and have more initiatively wear the intention of constraint device and initiatively adjust the constraint device.

Taking playing a video file or an audio file as an example, the intelligent terminal can be arranged in an area where the eyesight or the hearing of the wearer can be reached, so that when the binding device is well bound, the video or the audio is continuously played, and when the binding state is not good, the playing is stopped. In this case, once playback is stopped, the wearer who wishes to continue viewing the video or audio file actively adjusts the restraint device to ensure that it is worn correctly.

In one embodiment, when the restraint device is used to restrain a passenger protecting a rear seat of a vehicle, the smart terminal may be disposed at the back of a front seat in such a manner that a screen faces the rear seat passenger, thereby facilitating a wearer, especially a young child, to view a video file.

In another embodiment, the intelligent terminal can also realize positive feedback to the wearer through a locking operation or an unlocking operation, at this time, the intelligent terminal is no longer limited to playing video files or audio files, other applications such as game applications or reading applications can be opened, and the intelligent terminal can be held by the wearer, in this case, once the intelligent terminal locks the operation because of receiving a signal of poor binding state, the wearer holding the intelligent terminal can actively improve the binding state until the intelligent terminal is unlocked, so as to continue to operate the intelligent terminal.

The technical scheme provided by the invention is explained in more detail with reference to the accompanying drawings 1-7.

Referring to fig. 1, there is shown a schematic view of a safety restraint system for head protection, in which a cap 1 and a strap 2 are arranged in relation to each other, wherein a sensor is arranged at

positions

3 and 4 in the figure for measuring restraint pressure at different positions, and a whiplash protection device is indicated by reference numeral 5.

Fig. 2, fig. 3 and fig. 4 are schematic flow charts of a signal generating method according to an embodiment of the present invention. Fig. 2 shows a basic flow of the signal generation method, namely, a sensing signal from the sensing device is compared with a set binding threshold value, so as to obtain a state signal of an object binding state. Fig. 3 and 4 show the method for representing the signal of the object binding state by using the level parameter and the pressure-time variation parameter as the dynamic characteristic parameter, respectively.

Fig. 5 and fig. 6 are schematic diagrams illustrating a connection structure of a safety restraint system according to an embodiment of the present invention. Fig. 5 shows a sensing device, a signal generating device and an alarm device which are arranged in a wired connection manner, and fig. 6 shows a connection relationship between the alarm device, an intelligent terminal and the signal generating device which are arranged in a wireless connection manner and take a bluetooth transmitting terminal as a node.

Fig. 7 is a waveform diagram of a continuous sensing signal of a pressure-time variation parameter sensed by a pressure sensor in a method for generating a parameter representing a bound state of an object according to an embodiment of the present invention. The waveform variation with the period of t1 and t2 is shown in the figure, wherein the amplitude of the waveform variation in the period of t1 is small, and the graph fluctuates up and down about the horizontal axis with the pressure being zero, so that the pressure-time variation parameter measured by the pressure sensor in the period can be considered to reflect the characteristics of the natural frequency and the like of the pressure sensor itself or the arrangement position thereof; and taking the point A as a node, the pressure sensor measures that the pressure sensor fluctuates up and down and has larger amplitude (the pressure difference between the point B and the point C) about the point P1, so that the pressure fluctuation of the pressure sensor after being compressed is reflected. Based on this, it is possible to eliminate the interference of the pressure sensor with the natural frequency of its installation position by subtracting the waveform in t1 period from the waveform in t2 period.

Further, the area between the waveform shown in fig. 7 and the horizontal axis, that is, the integral value of the pressure-time variation parameter with respect to time reflects the work (W ═ P × t) performed by the outside world on the restraining device provided with the pressure sensor and the restrained object.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

If the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the description of the invention, the above-described terms are intended to be based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device, mechanism, component, or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. A signal generating method for generating a signal indicative of a restraining condition of an object, the method comprising the steps of:

2. The method of claim 1, wherein the sensing device comprises an inductive switch, wherein the dynamic characteristic parameter comprises a level parameter, and wherein prior to acquiring the sensing signal, the method further comprises:

3. The method of claim 2, further comprising:

4. The method of claim 2, wherein the step of generating a status signal indicative of the restraint status of the object further comprises:

Comparing the level parameter with a first set level value; and

5. The method of claim 2, wherein the inductive switch is at least one capable of generating at least one level parameter, and wherein the step of generating a status signal indicative of an object restraint condition further comprises:

6. The method of claim 1, wherein the sensing device comprises a pressure sensor, the dynamic characteristic parameter comprises a pressure-time varying parameter, and prior to acquiring the sensing signal, the method further comprises:

7. The method of claim 6, further comprising:

8. The method of claim 7, wherein the step of generating a status signal indicative of an object restraint status comprises:

9. The method of claim 8, wherein after obtaining the calibrated pressure-time variation parameter, the step of generating a status signal indicative of the restraint status of the object further comprises:

comparing the second integral value with a second set work done value; and

10. The method of claim 8, wherein after obtaining the calibrated pressure-time variation parameter, the step of generating a status signal indicative of the restraint status of the object further comprises:

comparing the difference value with a first set amplitude; and

11. The method of claim 6, wherein said pressure sensors are at least two and are capable of generating at least two pressure-time varying parameters, and said step of generating a status signal indicative of an object-restraining condition comprises:

summing said at least two pressure-time variation parameters;

Integrating the sum over time to obtain a third integral value;

comparing the third integral value with a third set work done value; and

12. A signal generating device configured to perform all the steps of the signal generating method according to any one of claims 1 to 11.

13. A safety restraint system, comprising:

a restraint device for restraining an object;

the signal generating device of claim 12; and

14. The safety restraint system of claim 13 wherein the restraint device comprises:

a cap body;

The sensing device includes:

15. The safety restraint system of claim 14 wherein the inductive switch comprises a capacitive touch inductive switch or a flexible membrane switch.

16. The safety restraint system of claim 14 further comprising:

17. The safety restraint system of claim 14 wherein the alarm device comprises:

18. The safety restraint system of claim 14 wherein the inductive switch is at least one and is disposed on the cap or the strap, the safety restraint system configured to:

19. The safety restraint system of claim 14 wherein the pressure sensors are at least one pair and are symmetrically disposed on the cap and/or strap, the safety restraint system being configured to:

20. The safety restraint system of claim 19 wherein the means for generating a signal indicative of an object restraint status is further configured to:

21. The safety restraint system of claim 16 further comprising:

22. The security binding system of claim 21, wherein the smart terminal is further configured to:

23. The security binding system of claim 21, wherein the smart terminal is capable of playing preset audio or video files, the smart terminal being further configured to:

24. The security binding system of claim 21, wherein the smart terminal is capable of being locked into operation to inhibit a user's operational behavior, the smart terminal being further configured to: