1. A measurement system for a machine that processes a continuous strand like
textile material, wherein the machine is a spinning machine comprising a
plurality of spinning positions, the measurement system comprising
• a plurality of quality measurement units (21) configured to continuously measure at least one quality parameter (19) of one strand of the strand like textile material being continuously transported within the spinning machine.
2. The measurement system of claim 1, wherein each of the plurality of spinning positions is associated with an individual quality measurement unit (21)
3. The measurement system of one of the preceding claims, wherein the at least one quality measurement unit (21) comprises a first sensor (3a) that is capable of determining at least one first sensor signal (17a) from which the quality parameter (19) can be determined, and a first signal processing unit (8a) for determining the quality parameter (19) from the first sensor signal (17a).
4. The measurement system according to claim 3 wherein the first sensor (3a) comprises at least one-quality sensor .element-arranged to measure the at least one quality parameter (19) at one spinning position of the spinning machine.
5. The measurement system according to claim 4 wherein the first sensor (3a) is arranged to generate a single first sensor signal (17a)

• from readings of a single one of the at least one quality sensor elements, or
• from readings of two or more of the at least one quality sensor elements.
6. The measurement system according to one of claims (3) to (5), wherein the first
signal processing unit (8a) is arranged to determine one or more quality

parameters (19) from one or more first sensor signals (17a) from a single spinning position.
7. The measurement system according to one of claims (3) to (5), wherein the first
signal processing unit (8a) is arranged to determine one or more quality
parameters (19) from one or more first sensor signals (17a) from a plurality of j
spinning positions.
8. The measurement system of.claim 1 or claim 2,.comprising
* at least one production measurement unit (20) configured to continuously measure at least one production parameter (18) that characterises a running status of one strand of the. continuously transported strand like textile material,
wherein each of the plurality of spinning positions is associated with an
individual production measurement unit (20).
9. The measurement system of one of the preceding claims, wherein the at least one production measurement unit (20) comprises a second sensor (3b) that is capable of determining at least one second sensor signal (17b) from which the production parameter (18) can be determined, and a second signal processing unit (8b) for determining the-production parameter (18) fronrthe second sensor signal (17b).
10. The measurement system according to claim 9 wherein the second sensor (3b) comprises at least one production sensor clement arranged to measure the at least one production parameter (18) at one spinning position of the spinning machine,
11. The measurement system according to claim 10 wherein the second sensor (3b) is arranged to generate a single second sensor signal (17b)

• from readings of a single one of the at least one production sensor elements,
or
• from readings of two or more of the at least one production sensor elements.
12. The measurement system according to one of claims (9) to (11), wherein the second signal processing unit (8b) is arranged to determine one or more production parameters (18) from one or more second sensor signals (17b) from a single spinning position.
13. The measurement system according to one of claims (9) to (11), wherein the second signal processing unit (8b) is arranged to determine one or more production parameters (18) from one or more second sensor signals (17b) from a plurality of spinning positions.
14. The measurement system of one of the preceding claims, wherein a production measurement unit (20) and a quality measurement unit (21) are implemented by a common measurement unit (22) which comprises a common sensor (3c) that is capable of determining at least one common sensor signal (17c) from which the production parameter (18) and the quality parameter (19) can be determined, and a common signal processing unit (8c) for determining the production parameter (18) and the quality parameter (19) from the common sensor signal (17c).
15. The measurement system of one of the preceding claims, wherein the at least one quality parameter (19) is derived from a measurement at least one of the following properties of the strand like textile material:

• thickness;
• reflectivity or occlusion of light in the visible and/or infrared and/or ultraviolet spectrum; and
• mass per unit length or linear density.

16. The measurement system of one of the preceding claims, wherein the at least
one quality parameter (19) describes at least one of
• impurities such as thick places, thin places, neps and its classifications based on the dimensions of the impurities;
• Variations of mass / thickness in short term and in long term with respect to time period;
• Protruding fibres from the strand like textile material; and
• the presence of foreign materials or vegetable matters:
17. The measurement system of one of the preceding claims, wherein the at least
one production parameter (18) is derived from a measurement at least one of
the following:
• presence of the strand like textile material; and
• rotational speed of the strand like textile material.
18. The measurement system of one of the preceding claims, wherein the at least
one production parameter (18) describes at least one of
• breakage;
• rotational speed;
• production; and
• efficiency.
19. The measurement system of one of the preceding claims, wherein each sensor
(3) and an associated'signal processing unit (8) are physically arranged in a
common carrier unit (26).
. 20. The measurement system, of one of claims (1) to (18), wherein each sensor (3) and an associated signal processing unit (8) are physically arranged in separate carrier Units (26).

21. The measurement system of one of claims (1) to (18), wherein a plurality of sensors (3) and a single associated signal processing unit (8) are physically arranged in a common carrier unit (26).
22. The measurement system of one of claims (1) to (18), wherein a plurality of sensors (3) and a single associated signal processing unit (8) are physically arranged in separate carrier units (26).
23. The measurement system of one of claims (1) to (22), comprising a plurality of sensors (3), each associated with a spinning position, these sensors (3) being mounted on non-moving parts of the spinning machine.
24. The measurement system of one of claims (1) to (22), comprising a plurality of sensors (3), each associated with a spinning position, these sensors (3) being mounted on moving parts of the spinning machine.
25. The measurement system of one of the preceding claims, wherein the sensors (3) are arranged between front rollers of a drafting system and a ring (5) of a spinning position of the spinning machine.
26. The measurement system of one of the preceding claims, wherein the sensors (3) are arranged to measure yam quality parameters between front rollers of a drafting system and a lappet hook (or yam guide eyelet) of the spinning position.
27. The measurement system of one of the preceding claims, wherein the at least one quality measurement unit (21) comprises a visual indicator of at least one quality parameter (19) and/or production parameter (18) or a deviation of such a

parameter, and in particular wherein the visual indicator comprises at least one of
• a lamp (14) which can be operated to be lit in on or more colours that are indicative of one or more values of the parameter or deviation; or
• a lamp (14) which can be operated to be permanently lit or flashing, this being indicative of one or more values of the parameter or deviation; or
• a lamp (14) which can be operated to flash at different frequencies that are indicative of one or more values of the parameter or deviation; or
• a display unit (12) that is configured to display one or more values of the quality parameter (19).
28. The measurement system of one of the preceding claims, comprising a common
display unit (12) that is configured to display at least one of
• one or more values of quality parameters (19) from a plurality of quality measurement units (21); and
• one or more combined values computed from the values of quality parameters (19) from a plurality of quality measurement units (21), such combined values characterising an overall quality representing the plurality of quality measurement units (21) and being, for example, computed by surrrming these values of quality parameters (19) and/or by computing statistical measures from these values.

29. The measurement system of one of the preceding claims, comprising a stopper (11) arranged to perform at least one of holding and cutting the strand like textile material.
30. The measurement system of claim 29, being configured to actuate the stopper (11) automatically or manually, in particular by means of a user interface (15) of the measurement system itself or by a smart device interface (16) that is in wireless communication with the measurement system.

31. The measurement system of one of the preceding claims, comprising a
monitoring unit that is configured to
• continuously monitor at least one quality parameter (19) of a
i
continuously transported yam (2) in at least one spinning position of the spinning machine;
• based on an on-line analysis of the monitored at least one quality
parameter (19), identify a malfunction of the at least one spinning
position or a substandard quality of roving material fed to the spinning
position.
32. The measurement system of claim 31, wherein the monitoring unit is configured to detect thin places, and to identify a malfunction of feeding bobbins when too many thin places occur.
33. The measurement system of claim 31, wherein the monitoring unit is configured to monitor a first and a second of two adjacent spinning positions, with a first quality parameter measured at the first spinning position and a second quality parameter measured at the second spinning position, and to identify a malfunction of drafting rollers for the two spinning positions when the first and the second quality parameter deviate in the same way.
34. The measurement system of claim 31, wherein the monitoring unit is configured to detect when the thickness of a yarn (2) deviates from a reference thickness for a time that is longer than a time limit, and to identify £ malfunction of the drafting system if this is detected.
35. The measurement system of claim 31, wherein the monitoring unit is configured to monitor one or more quality parameters (19) and to identify a deviation of the yarn count on the basis of these quality parameters (19).

36. A machine for processing a strand like textile, comprising the measurement system of one of the preceding claims
37. A kit comprising a plurality of quality measurement units (21) that are designed to be arranged in a spinning machine to continuously measure at least one quality parameter (19) of a continuously transported yarn in the spinning machine.
34. A methpd for upgrading a spinning machine comprises the steps of:
• providing a plurality of quality measurement units (21) configured to continuously measure at least one quality parameter (19) of one strand of the strand like textile material being continuously transported within the spinning machine;
• arranging each of the quality measurement units (21) at one of the spinning position of Hie spinning machine to measure at least one quality parameter (19) of yarn (2) created in the spinning position.